JP6514044B2 - Pressure fryer - Google Patents

Description

  The present invention relates to a pressure fryer that heats cooking oil and performs pressure cooking of foodstuffs in a state in which an oil tank containing cooking oil is sealed with a lid.

  The pressure fryer has an oil tank open at the top and capable of containing cooking oil, heating means such as a pulse burner for heating the cooking oil in the oil tank, and a lid capable of opening and closing the opening of the oil tank, By heating the cooking oil by the heating means in a state where the oil tank is sealed by the body, pressure cooking of the food is possible (see, for example, Patent Document 1). The lid includes a lid main body capable of closing the opening of the oil tank, and an arm having a handle screw for supporting the lid main body screwed on an internally held female screw portion. The rear end of the arm is on the rear side of the oil tank The rotary shaft is rotatably connected by a rotational shaft in the left and right direction, and is attached in a state of being biased toward the open side by a torsion coil spring provided on the rotational shaft. A packing that abuts the opening in the closed state of the oil tank is provided on the outer periphery on the back side of the lid body, and after turning the arm forward with the operation unit provided on the front end of the arm, turn the handle provided on the arm Then, the handle shaft is screwed down, and the lid body is pressed against the opening to seal the gap between the lid and the oil tank with packing.

Unexamined-Japanese-Patent No. 2011-244942

  Such pressure fryer is susceptible to partial wear on the packing over time. In this case, the lid main body is closed so that the opening end face of the oil tank and the worn packing fit, so the relative angle between the lid main body and the handle shaft is deviated, and the advancing force of the handle shaft with respect to the lid main body is efficiently There is a possibility that it can not be transmitted. This problem can occur similarly when there is a deviation in the angle between the lid body and the handle shaft due to a manufacturing error, or when the oil tank, the arm, and the lid body are distorted due to aging.

  Therefore, according to the present invention, even when the relative angle between the lid body and the handle shaft deviates, the advancing force of the handle shaft can be efficiently transmitted to the lid body, and the sealability between the lid body and the oil tank is improved. The purpose is to provide a pressure fryer that can be secured.

In order to achieve the above object, the invention according to claim 1 is an oil tank supported by a housing and having an open upper surface, containing cooking oil, heating means for heating the cooking oil in the oil tank, and the oil tank An arm that is connected to a horizontal rotation shaft installed in the housing at a rear side of the housing and is rotatable between an inclined position crossing the upper side of the opening in the front-rear direction and an upright position retracted backward from the upper side of the opening A handle shaft having a handle at an upper end portion of the arm, the handle screw shaft penetrating the arm in an orthogonal manner and being screwed into a female screw portion inside the arm, and the arm at the collapsed position; Is suspended and supported by the lower end of the handle shaft which is on the lower side, and is moved together with the handle shaft by screw feed of the handle shaft by the handle, and abuts on the opening by the lower end of the handle shaft A pressure fryer comprising a lid body to be pressed against the opening Te,
A ball is held in a rotatable and partially projecting state at one of the lower end portion of the handle shaft and the contact portion of the lower end portion of the lid body, and the ball is exposed to the other. It is characterized in that a ball receiving member having a receiving recess in which a portion is fitted is held movably in the horizontal direction.
The invention according to claim 2 is that, in the configuration according to claim 1, the receiving recess has an outer diameter larger than that of the exposed portion of the ball, and the diameter decreases toward the bottom side so that the inner diameter is the exposed portion It is characterized by comprising: a tapered first recess with a smaller diameter than the first recess; and a concave second recess which is continuous with the first recess.

According to the first aspect of the present invention, even if a shift occurs in the relative angle between the handle shaft and the lid main body by adopting the ball and the ball receiving member, the shift can be absorbed, and the advancing force of the handle shaft can be made efficient. Can be transmitted to the lid body. Therefore, the sealability between the lid and the oil tank can be sufficiently secured.
According to the second aspect of the present invention, in addition to the effect of the first aspect, the receiving recess is formed of the tapered first recess and the concave second recess, so that the handle shaft is inclined. Even in this case, the ball and the receiving recess can be made to abut on each other annularly, and the lid body can be efficiently pressed against the opening even if the relative angle of the handle shaft is inclined. Further, as compared with the case of abutting at one point, since the force acting on the ball receiving member can be dispersed when the handle shaft is screw-fed, abrasion of the ball and the ball receiving member can be prevented, and the frequency of maintenance can be reduced. Can be reduced.

It is a perspective view of a pressure fryer. It is a top view of a pressure fryer. It is a center longitudinal cross-sectional view of a pressure fryer (lid main body is an upper limit position). It is the upper part enlarged view of a pressure fryer (lid main body is a lower limit position). In explanatory drawing of a lid | cover main body, (A) is a plane, (B) shows a side, respectively. It is the AA expanded sectional view of FIG. It is the C section enlarged view of FIG. FIG. 6 is an enlarged cross-sectional view taken along the line B-B of FIG. 5; It is a longitudinal cross-sectional view of the lid lift of a connection pin part. It is the perspective view which looked at the lid body from the bottom. FIG. 5 is a perspective view of a pressure safety pin. It is explanatory drawing of the handle shaft containing a female screw part, (A) is a perspective view and (B) shows a cross section, respectively. It is explanatory drawing of the meshing part of an up-and-down internal thread part. It is a perspective view of an arm and a handle shaft. It is a perspective view of an arm side lift. In the explanatory view of a lock mechanism, (A) shows a closure control state and (B) shows a closure permission state, respectively. It is a fragmentary perspective view which shows the locked state of a flange part and a pressure safety pin (a part of arm and handle shaft, arm side lift is abbreviate | omitted).

Hereinafter, embodiments of the present invention will be described based on the drawings.
1 to 3 are explanatory views showing an example of a pressure fryer, FIG. 1 is a perspective view, FIG. 2 is a plan view, and FIG. 3 is a central longitudinal sectional view. The pressure fryer 1 has a plan view at the center of a square box-like housing 2 composed of a frame 3 serving as a framework and a panel (not shown) (not shown in FIG. 2, only the upper panel 4) stretched outside the frame. A rectangular oil tank 5 is installed in a state in which the opening 6 at the upper end protrudes upward from the upper surface panel 4 so that the cooking oil contained in the oil tank 5 can be heated by the pulse burner 7 as heating means It is. The top panel 4 is provided with a lid 8 capable of opening and closing the opening 6 of the oil tank 5. 9, 9,... Are casters provided at the four corners of the lower surface of the housing.

  The pulse combustor 7 is provided on the front inner surface of the oil tank 5 to burn the mixed gas of the fuel gas and the combustion air, and the combustion exhaust from the combustion chamber 10 is discharged to the inner surface of the oil tank 5. And a tail pipe 11 orbiting along. The mixing chamber 13 in the air chamber 12 provided on the front outer surface of the oil tank 5 is connected to the combustion chamber 10, and the mixing chamber 13 is connected to the combustion air from the fan 14 in the housing 2 through piping. The fuel gas is supplied from a gas conduit 16 provided with a flasher 15 having a solenoid valve.

  The downstream side of the tail pipe 11 is connected to the left and right exhaust pipes 17 and 17 via the air chamber 12, and is further led into the rising portion 19 installed at the rear of the housing 2 via the decoupler 18 etc. Can be discharged from the exhaust stack 20. The rising portion 19 and the upper portion of the oil tank 5 are connected by two steam discharge pipes 21 and 22, and one steam discharge pipe 21 is provided with a constant pressure valve 23 so that the pressure in the oil tank 5 exceeds a predetermined value during cooking. The pressure in the oil tank 5 is kept constant by releasing the pressure into the rising portion 19 when the pressure rises. The other steam discharge pipe 22 is provided with the release valve 24 and opens the release valve 24 immediately before the end of cooking to release the pressure in the oil tank 5 into the rising portion 19 and bring the pressure in the oil tank 5 to normal pressure. Reduce. The rising portion 19 has an oil separator that separates oil and the like from the steam introduced into the inside, and discharges the steam from which the oil is separated from the exhaust port 25 on the upper surface.

On the other hand, an oil tank 27 connected to the bottom of the oil tank 5 by an oil discharge pipe 26 is provided in the lower part of the oil tank 5 in the housing 2 and the cooking oil filtered by a filter 28 provided in the oil tank 27 is returned by a pump 29 The cooking oil can be filtered by returning it to the oil tank 5 through the pipe 30.
Reference numeral 31 denotes a burner controller provided at the lower side of the side surface of the housing 2. The burner controller 31 is connected to the solenoid valve of the blinker 15 and a temperature sensor (not shown) provided in the oil tank 5 The mixture valve in the combustion chamber 10 is operated by opening and closing the solenoid valve of the flasher 15 so as to maintain the oil temperature in the oil tank 5 at the cooking temperature (for example, 180.degree. C. to 182.degree. C.) based on the temperature detection signal from Execute ON / OFF control to intermittently perform the combustion of. In the upper part on the front side of the housing 2, an operation panel 33 having operation buttons, a display unit and the like is provided, and a fly controller 32 is provided which sets cooking mode, heat retention mode, cooking temperature and the like and instructs the burner controller 31 to input. It is done.

The lid 8 has a rectangular cylindrical arm 34 and a lid body 35 made of aluminum which is connected to the arm 34 and which can be fitted around the opening 6 of the oil tank 5. A handle shaft 36 having a cross-shaped handle 37 at its upper end is screwed into the longitudinal center of the arm 34, and the upper surface center of the lid main body 35 is connected to the lower end of the handle shaft 36. Here, the rear end of the arm 34 is rotatably connected by the left-right direction rotational shaft 38 provided at the rear of the oil tank 5, so that the lid 8 can be seen from the collapsed position shown by solid lines in FIGS. It is possible to move up and down to a standing position shown by a two-dot chain line at 3.
First, as shown in FIGS. 5 and 6, the lid main body 35 has a square shape in plan view long in the front and rear direction (the left side in FIG. 5 is the front and the vertical direction is described as horizontal). A rectangular flat portion 39 located at the top and a tapered portion 40 formed around the flat portion 39 and gradually inclined downward toward the outer periphery are formed. In the circular recess 41 formed at the center of the flat portion 39, upper and lower two disk-shaped upper guide plates 42 and lower guide plates 43 are fixed by four bolts 44, 44.

A disc-like ball receiving plate 46 as a ball receiving member having a flange 47 provided on the lower outer periphery thereof is fitted in a recess 45 recessed in the center of the lower guide plate 43 as shown in FIG. . The upper guide plate 42 has a ring shape in which the ball receiving plate 46 is fitted at the center, but a stopper 48 covering the flange 47 from above is provided on the inner periphery to prevent the ball receiving plate 46 from falling off. There is. However, the ball tray 46 is assembled with a slight play left between the upper and lower guide plates 42 and 43, and in the assembled state, the ball tray 46 can be finely moved and rotated in all directions of 360 ° in plan view. It has become.
In the center of the upper surface of the ball receiving tray 46, the outer diameter is larger than that of the exposed portion of the steel ball 93 described later, and the diameter decreases toward the bottom side, and the inner diameter becomes smaller than the exposed portion. A receiving recess 49 is formed, which comprises a first recess 50 and a concave second recess 51 continuous from the first recess 50 and positioned at the center thereof. The upper surface of the ball receiving plate 46 and the upper surface of the upper guide plate 42 are flush with the flat portion 39 in the assembled state.

  Further, an attachment groove 52 communicating with the circular recess 41 is formed in the front-rear direction around the circular recess 41 at the center of the flat portion 39 in the left-right direction. A pair of lid lifts 53, 53 are fixed to the front and rear ends of the mounting groove 52 across the circular recess 41 by two bolts 54, 54 penetrating the lid main body 35 from the rear surface as shown in FIG. . In each lid lift 53, a pair of connection pins 55, 55 whose end on the side of the circular recess 41 has a large diameter, penetrates slidably in the front-rear direction. As shown in FIG. 9, the connecting pins 55, 55 have a fixing plate 56 as a fixing member penetrate through an end portion of the lid lift 53 that protrudes on the side opposite to the circular recess 41, and a nut 57 is screwed together. Are coupled to each other, and are urged in such a way as to project to the opposite side in synchronization with each other by means of a coil spring 58 as an urging means mounted outside the large diameter portion in the lid lift 53. The connecting pin 55 is located above the flat portion 39 in the mounting state of the lid lift 53. The rear end of a rod-like lever lock 59 as a lock member is fixed to the front of the lid lift 53 on the front side by bolts 60 and 60 so that the front end projects further forward than the lid main body 35. The tip end portion 59a of the lever lock 59 is bent in an L-shape toward the lower side than the flat portion 39, and a locking convex portion 61 that protrudes rearward is formed on the lower end rear surface.

On the other hand, as shown also in FIG. 10, a covering portion 62 covering the upper outer periphery of the opening 6 in the closed state of the oil tank 5 is formed on the peripheral edge of the lid main body 35. Further, on the back surface of the lid main body 35, circumferential ribs 64 and 64 having an outer diameter slightly smaller than the covering portion 62 and orbiting similarly to the covering portion 62, and a circular portion 65 positioned at the center of the lid main body 35 A protruding portion 63 formed of radial ribs 66, 66,... Radially extending from the circular portion 65 and connected to the circumferential rib 64 is provided at a height lower than that of the covering portion 62. A fitting groove 67 is formed over the entire circumference between the covering portion 62 and the projecting portion 63, and the fitting groove 67 has an outer peripheral edge of a metal film 68 covering the back surface of the lid main body 35. While being fixed by screws 69, 69 ···, a packing 70 is fitted over the entire circumference on the outer side thereof. At the lower edge of the covering portion 62, a pressing portion 71 is formed which is engaged with the lower surface of the packing 70 to prevent the packing 70 from coming off.
The film 68 has a shallow tapered shape including a flat surface portion 72 at the center and an inclined surface portion 72a which is inclined in a direction approaching the back surface side of the lid main body 35 from the flat surface portion 72 toward the outer peripheral side. A reinforcing plate 73, which is a metal plate, is internally attached to the upper surface.

  Therefore, the film body 68 can be displaced between the raised position where the reinforcing plate 73 contacts the projecting portion 63 and the lowered position where the reinforcing plate 73 separates from the projecting portion 63. A through hole 74 is formed vertically in the front of the circular recess 41 in the lid body 35, and a pressure safety pin 75 as a shaft member having a large diameter portion 76 formed at the lower end is accommodated in the through hole 74 The upper end is penetrated by the upper and lower guide plates 42 and 43. A chamfered portion 77 is formed on the side surface of the pressure safety pin 75 as shown in FIG. 11, and the chamfered portion 77 is formed by fitting with a through hole of the same shape formed in the upper and lower guide plates 42 and 43. It is possible to move up and down in the through hole 74 in a state in which the rotation is restricted in a phase in which the front and rear direction is. At the upper end of the pressure safety pin 75 and on the opposite side to the chamfered portion 77, an inclined surface 78 is formed as an inclined portion that inclines downward to the left outside.

A coil spring 79 as biasing means is wound on the upper side of the large diameter portion 76 of the pressure safety pin 75, and the pressure safety pin 75 is protruded to the back side of the lid body 35 as shown by a two-dot chain line in FIG. The large diameter portion 76 is urged against the reinforcing plate 73. Therefore, in the normal state, the membrane body 68 is urged to the lowered position where the reinforcing plate 73 separates from the projecting portion 63 of the lid main body 35, and the upper end of the pressure safety pin 75 at this time does not protrude from the upper surface of the upper guide plate 42. It has become.
Furthermore, on the rear surface of the cover portion 62 on the rear side of the lid main body 35, a saucer 80 extending in the left-right direction and inclined downward to the right in the standing state of the lid 35 is screwed. The tube 81 is connected.

  Next, a counterweight 82 having a U-shaped cross section is housed inside the arm 34, and the handle shaft 36 penetrates the arm 34 together with the counterweight 82 in an orthogonal manner, and is an external thread provided at an intermediate portion The portion 83 is screwed into a female screw portion 84 housed inside the arm 34. The female screw 84 is, as shown in FIGS. 4 and 12, an upper female screw 84A as a first female screw fixed by a bolt (not shown) in the counterweight 82, and an arm positioned on the lower side thereof. A lower internal thread portion 84B is divided into two as a second internal thread portion which is not fixed in the housing 34. On the lower surface of the upper female screw portion 84A, as shown in FIG. 13, a square-shaped upper meshing projection 85A as a meshing portion concentric with the axis is formed. On the other hand, on the upper surface of the lower female screw portion 84B, a pair of lower meshing projections 85B, 85B as meshing portions positioned on the outside of a pair of opposite side surfaces of the upper meshing projections 85A are formed. The lower meshing projections 85B can be meshed with each other in either forward or reverse rotational directions. However, a predetermined play is formed in the rotational direction between the upper meshing projection 85A and the lower meshing projection 85B, and the upper female screw portion 84A and the lower female screw portion 84B have a slight gap in the vertical direction. It is screwed to the male screw 83 in a state where (for example, 1.25 mm or less) is left, and grease is stored in the gap. In FIG. 4, 86 is a joint bolted with the upper female screw portion 84A on the upper side of the arm 34, 87 is a lock nut screwed into the joint 86 to prevent the handle shaft 36 from coming off, 88 is an aluminum cap covering the joint 86. is there.

  In addition, a cylindrical ball presser 89 is assembled from the lower side to the lower end 36a formed with a large diameter by the handle shaft 36 by a pin 90 orthogonal to the axial center, and is formed spherical on the lower surface of the lower end 36a. The steel ball 93 is retained and held between the upper recess 91 and the spherical receiving hole 92 formed at the center of the ball retainer 89 with the lower portion slightly smaller than the lower half exposed. Between the lower surface of the lower end portion 36 a and the inner upper surface of the ball retainer 89, a slight gap in which the grease is stored is formed to make the steel ball 93 rotatable. On the outer periphery of the lower end of the ball presser 89, a gear-like flange portion 94 is formed in which a plurality of notches 95, 95.

Furthermore, an arm side lift 96 as a connecting member is provided at the lower end portion 36 a of the handle shaft 36. The arm side lift 96 is a cylindrical body which is penetrated by the handle shaft 36 and covers the outer periphery of the lower end portion 36a including the ball press 89 as shown in FIGS. A locking portion 97 for locking from above is formed, and a large diameter connecting portion 98 covering the upper side and the outer side of the flange portion 94 of the ball presser 89 is formed at the lower end.
The connecting portion 98 has a circular cap shape in which the opening at the lower end is larger in diameter than the upper and lower guide plates 42 and 43, and fitting portions 99 and 99 to be fitted into the mounting grooves 52 of the lid main body 35 are formed at point symmetrical positions. And a pair of insertion holes 100, 100 into which the connection pins 55, 55 of the lid lift 53 can be inserted.

  The arm side lift 96 is positioned in the arm 34 through the long hole 101 provided on the lower surface of the arm 34 at the upper side of the connecting portion 98, but the long hole 101 has two chamfers formed on the left and right. The flange 102 having the same shape as the elongated hole 101 is also extended to the arm side lift 96. That is, when the chamfering of the flange 102 is matched to the chamfering of the long hole 101, the arm side lift 96 can be inserted into the arm 34 together with the flange 102, and the arm side lift 96 is rotated 90 ° in the insertion state to make the flange 102 By shifting the phase of the chamfering of the long hole 101 and the long hole 101, the flange 102 can be engaged with the arm 34 to prevent the arm side lift 96 from coming off downward. Since the fitting portion 99 and the insertion hole 100 are in phase with the chamfering of the flange 102, the fitting portion 99 and the insertion hole 100 are positioned in the front-rear direction along the arm 34 when the arm side lift 96 is in the retaining state. It will be done.

  On the other hand, at the front end of the arm 34, as also shown in FIG. 16, a pair of left and right triangular operation plates 103, 103 as operating portions provided with a grip bar 104 on the outer lower end and a lock bar 105 on the inner side It is connected so as to be able to swing back and forth around a connecting shaft 106 provided in the arm 34. Between the operation plates 103 and 103 on the lower surface of the arm 34, a U-shaped holding plate 108 supporting a support shaft 107 parallel to the connecting shaft 106, and a vertically oriented front cover located below the support shaft 107 109 and a sloped regulating plate 110 located behind the front cover 109 are respectively bridged. A pair of torsion springs 111 and 111, one end of which abuts against the holding plate 108 and the other end of which is held between the front cover 109 and the restricting plate 110, are mounted on both ends of the support shaft 107. The inner side of the upper plate portion 112 provided longitudinally at the upper end of the restriction plate 110 is in contact with the rear plate 108a of the holding plate 108, and the line connecting the lock rod 105 and the connecting shaft 106 is orthogonal to the arm 34 It is biased to the position. A notch 113 is formed at the center of the rear plate 108 a of the holding plate 108 in the left-right direction, and a locking recess 114 is formed in front of the notch 113 in the upper plate 112. Further, a lever pressing spring 115 is provided at an intermediate portion of the support shaft 107 and between the torsion springs 111 and 111.

The arm 34 and the lid main body 35 formed in this way position the arm lift 96 at the lower end of the handle shaft 36 between the lid lifts 53 and 53 of the lid main body 35, and the connecting pin 55 of the lid lift 53. , 55 are respectively inserted into the insertion holes 100, 100 of the connecting portion 98, the lid body 35 is suspendedly connected to the lower end of the handle shaft 36 via the lid lifts 53, 53 and the arm side lift 96. In this suspended state, as described above, the arm-side lift 96 is held off by the flange 34 by the flange 102. Therefore, even if the handle shaft 36 is broken, the cover body 34 is suspended by the arm-side lift 96. Lower support is maintained.
The steel ball 93 provided on the handle shaft 36 in a connected state with the lid main body 35 has its exposed portion fitted in the second recess 51 of the receiving recess 49 of the ball receiving plate 46. At this time, even if there is misalignment between the steel ball 93 and the second recess 51, the ball receiving plate 46 is finely moved on the lower guide plate 43 by the contact of the steel ball 93 with the first recess 50. The correction is made, and the steel ball 93 is reliably fitted in the second recess 51. Further, the flange portion 94 of the ball presser 89 is located above the upper guide plate 42 at a position where the notches 95, 95 ··· and the pressure safety pin 75 are concentrically located.

At this time, the tip end of the lever lock 59 penetrates the notch portion 113 of the rear plate 108 a of the holding plate 108 and protrudes forward of the regulating plate 110. The lever pressing spring 115 abuts on the top surface of the tip 59 a of the lever lock 59 to bias the tip 59 a downward. The locking convex portion 61 of the tip end portion 59a is positioned in front of the locking concave portion 114 of the regulating plate 110 only when the lid 35 is at the lower limit position with respect to the arm 34.
On the other hand, at the rear end of the arm 34, as shown in FIGS. 1 and 2, a pair of left and right connection plates 116, 116 are connected orthogonally, and the lower ends of the connection plates 116, 116 The upper ends of the pair of left and right support plates 117, 117 erected on the upper surface panel 4 are rotatably connected by a rotating shaft 38. The connection plate 116 and the rotating shaft 38 are integrally fixed in the rotational direction. A pair of torsion coil springs 118 are mounted on the rotation shaft 38 so that the winding direction and both end positions become mirror symmetrical, and the lower ends adjacent to each other at the center of both torsion coil springs 118 are behind the shaft support plates 117, 117. The upper ends located on the left and right outsides are engaged with the lower surface of the arm 34 to rotationally bias the arm 34 toward the open side of the oil tank 5 while engaging with the inside of the locking bar 119 connecting the ends. There is.

  Note that the lid 8 is provided with a stopper (not shown) provided between each connecting plate 116 and the shaft support plate 117 so that the lid 8 is moved rearward by 87 ° from the reclined position shown by solid lines in FIG. The rotation is restricted at the rotated upright position. The upright position is a position slightly forward from 90 ° in the vertical direction, but the center of gravity G of the lid 8 is rearward from the axial center O1 of the rotary shaft 38, that is, vertically through the axial center O1 of the rotary shaft 38 It is set to be located behind the imaginary line L of the direction. Therefore, the lid 8 is maintained in its upright position even in the forward tilt posture of 87 °.

At the standing position of the lid 8, the oil received by the tray 80 is collected in the discharge cylinder 81 and is sent to the rising portion 19 through a feed pipe (not shown).
On the other hand, on the front surface of the oil tank 5, as shown in FIG. 16, a pair of left and right locking plates 120, 120 as locking parts which can lock the lock rod 105 in a closed state of the oil tank 5 by the lid main body 35 It is set up. In each locking plate 120, a receiving groove 121 opened forward is formed in the front-rear direction. In each locking plate 120, on the upper surface and the upper inner surface of the receiving groove 121, an upper inclined surface 120a and a lower inclined surface 121a are formed respectively.

  In the pressure fryer 1 configured as described above, when performing pressure cooking, the lid 8 is closed in a state where the oil tank 5 is filled with cooking oil and the food is stored. That is, when the arm 34 is rotated forward while holding the grip bar 104 from the front side of the housing 2 and swinging the operation plates 103, 103 outward, the lid body 35 also rotates forward, following the oil tank 5 Move above the opening 6 of the At this time, the lid 8 in the upright position is in a posture inclined forward from 90 ° as described above, and the grip rod 104 is provided at the front end of the operation plate 103 projecting forward from the arm 34. The person can easily grip the grip bar 104 and close the lid 8 without jumping over the oil tank 5 greatly.

  Thereafter, when the operation plate 103 is pushed into the inner position, the lock rod 105 is locked in the receiving groove 121 of the locking plate 120 and the lid 8 is held at the collapsed position closing the oil tank 5. At this time, even if the locking of the lock rod 105 to the receiving groove 121 is insufficient, since the lower inclined surface 121a is formed on the upper inner surface of the receiving groove 121, the inner position by the torsion spring 111 The lock rod 105 is positively locked to the back (rear end) of the receiving groove 121 in conjunction with the biasing force. Further, even if the operation plate 103 is not sufficiently pulled out, the lock rod 105 is guided to the outside by coming into contact with the upper inclined surface 120 a of the locking plate 120, and the lock rod 105 is locked in the receiving groove 121. Can.

Here, when the arm 34 is laid down with the lid main body 35 at the lower limit position with respect to the arm 34, as shown in FIG. 16A, the tip end portion 59a of the lever lock 59 lowered with the lid main body 35 Since the lower surface is in contact with and locked to the upper end of the upper plate portion 112 of the regulating plate 110, the regulating plate 110 is pressed from above and the pulling out of the operation plate 103 to the front side is regulated. Therefore, the lock rod 105 abuts on the upper inclined surface 120 a of the locking plate 120, and the lid 8 can not be closed. Even if the operation plate 103 is forcibly pulled to the front against the pressing of the lever lock 59, the locking convex portion 61 of the tip end portion 59a locks in the locking concave portion 114 of the upper plate portion 112. The withdrawal of the operation plate 103 to the front is restricted. Further, even when the lid main body 35 is at an intermediate position higher than the lower limit position, the locking convex portion 61 is positioned in front of the locking concave portion 114, so that pulling out to the front of the operation plate 103 is restricted. Can not be blocked. Therefore, a procedure is established in which the lid body 35 always falls in the upper limit position with respect to the arm 34.
Then, at the upper limit position of the lid main body 35, as shown in FIG. 16B and FIG. 3, since the tip end portion 59a of the lever lock 59 lifted with the lid main body 35 is positioned above the upper plate portion 112, The operating plate 103 can be pulled out to tilt the arm 34, and the lock rod 105 can be locked in the receiving groove 121. In this state, the lid body 35 is held horizontally in a state where the packing 70 is not in contact with the opening 6.

  When the handle 37 is turned right from here and the handle shaft 36 is rotated in the direction of screwing into the female screw portion 84, the handle shaft 36 is screwed only to the upper female screw portion 84A initially fixed in the arm 34. Be Thereafter, when the lower meshing protrusion 85B of the lower female screw portion 84B rotated following the handle shaft 36 abuts on the upper meshed protrusion 85A of the upper female screw portion 84A, the handle shaft 36 is integrated with the upper female in the rotational direction. It is screwed into the threaded portion 84A and the lower female screw portion 84B. As described above, by screwing only the upper female screw portion 84A at the initial stage of rotation, the force required at the initial stage of rotation can be reduced. Although the upper internal thread 84A and the lower internal thread 84B are engaged after the initial stage of rotation, since the inertia acts on the handle shaft 36, the rotation operation can be continued without applying much force. .

When the handle shaft 36 is screwed in this way, the lid body 35 in the horizontal posture moves in parallel downward as shown in FIG. 4, and the entire circumference of the packing 70 is simultaneously brought into contact with the opening 6 and pressed to seal the oil tank 5. At the lower limit position of the lid main body 35, the locking convex portion 61 of the lever lock 59 which is simultaneously lowered is locked to the locking concave portion 114 of the regulating plate 110 to regulate the withdrawal of the operation plate 103 to the front. The opening of the body 8 is locked.
When the lid main body 35 is lowered, the lid main body 35 lifts the arm side of the handle shaft 36 even if the handle shaft 36 may be inclined from the vertical posture or displaced relative to the arm 34. Since the lower end of the handle shaft 36 is suspendedly connected to the lower end of the handle shaft 36 by the lid 96 and the lid lifts 53 and 53 of the lid main body 35, the horizontal position of the lid main body 35 is maintained regardless of the inclination of the handle shaft 36. It is difficult for one hit to occur. Therefore, it is possible to absorb the inclination and the positional deviation and secure the adhesion between the lid main body 35 and the oil tank 5.

  Further, even if misalignment occurs between the lid main body 35 and the handle shaft 36 due to wear of the packing 70 or an assembly error, the ball receiving plate 46 of the lid main body 35 receiving the steel ball 93 provided at the lower end of the handle shaft 36 is horizontal. By finely moving to absorb misalignment, the screw feed force of the handle shaft 36 can be efficiently transmitted to the lid main body 35. Therefore, the sealability between the lid body 35 and the oil tank 5 can be sufficiently secured. In particular, since the receiving recess 49 of the ball receiving tray 46 is formed of the tapered first recess 50 and the concave spherical second recess 51, the steel ball 93 is exposed even when the handle shaft 36 is inclined. The part always abuts annularly, and the lid body 35 can be efficiently pressed to the opening 6.

  After closing the oil tank 5 in this way, when a predetermined cooking mode is selected by the fry controller 32 and the operation switch of the operation panel 33 is turned on, the burner controller 31 rotates the fan 14 for a predetermined time to supply air. The mixed gas is intermittently burned in 10 to operate the pulse combustor 7. That is, the mixed gas is ignited by the ignition plug 10a (FIG. 3) provided in the combustion chamber 10 to be explosively burned in the combustion chamber 10, and the pressure increase in the combustion chamber 10 accompanying the combustion causes the combustion exhaust gas to be tail pipe 11. Forced discharge to 11 and the operation (ON / OFF operation) of drawing fuel gas and combustion air into the combustion chamber 10, which has a negative pressure due to discharge of the combustion exhaust, repeatedly or input adjustment by proportional control Let me do it.

When the pressure in the oil tank 5 is increased by this pressure cooking, the film body 68 which has been separated downward from the projecting portion 63 of the lid main body 35 by the pressure safety pin 75 biased downward by the coil spring 79 is attached to the coil spring 79. It moves upward against the pressure and pushes up the pressure safety pin 75. Then, as shown in FIG. 17, the upper end of the pressure safety pin 75 protrudes upward from the upper guide plate 42 of the lid main body 35 and engages with the notch 95 of the flange portion 94 of the ball presser 89. The rotation of the handle shaft 36 is restricted. Therefore, the lid 8 is prevented from being opened by the operation of the handle 37 during the pressure cooking.
At this time, when the notch 95 of the flange portion 94 is not located directly above the pressure safety pin 75, the handle shaft 36 can be rotated by the handle 37, but the flange portion 94 rotates and the notch 95 is pressure safe. As the pressure safety pin 75 pushed up by the membrane body 68 locks the upper end to the notch 95 when it reaches the position just above the pin 75, the rotation of the handle shaft 36 is immediately regulated.

When the pressure cooking is completed, the operator reversely rotates the handle 37 to screw-feed the handle shaft 36 upward to release the pressing of the lid main body 35. Also at this time, the initial rotation of the handle shaft 36 is performed. In this case, since the screw is screwed only to the upper female screw portion 84A, the rotation operation can be performed with a light force in the initial stage. Thereafter, even if the lower meshing protrusion 85B of the lower female screw portion 84B meshes with the upper meshing protrusion 85A of the upper female screw portion 84A and is integrated in the rotational direction, the rotation operation is continued as it is by inertia and the lid main body 35 is moved to the upper limit position. It can be moved.
Thus, when the lid body 35 moves to the upper limit position, as shown in FIG. 16 (B), the locking projection 61 of the lever lock 59, which is simultaneously lifted, is separated upward from the locking recess 114 of the regulating plate 110. The lock bar 105 can be removed from the locking plate 120 by gripping the grip bar 104 and pulling the operation plate 103 forward. When the arm 34 is rotated upward as it is, the lid body 35 is also rotated upward following the lid body 35, and the lid 8 is moved to the standing position where the oil tank 5 is opened.

  As described above, according to the pressure fryer 1 of the above embodiment, the lid main body 35 is at the upper limit position in non-contact with the opening 6 of the oil tank 5 and the lower limit position at which the packing 70 abuts the opening 6 to close the oil tank 5 By being able to move in parallel between them, one-side contact of the packing 70 accompanying opening and closing of the lid 8 is prevented. Further, since the lid body 35 moves in parallel toward the opening 6, the entire packing 70 can be uniformly brought into contact with the end face of the opening 6 and pressurized. Therefore, damage to the packing 70 is less likely to occur, and the thickness of the end face of the opening 6 can be reduced, or the end face can be made into a sharp shape without chamfers. Thus, the sealability between the lid 8 and the oil tank 5 can be secured.

In particular, here, a lock mechanism (a lever lock 59 and a lock mechanism for restricting the locking operation to the locking plate 120 by the operation plate 103 at the position of the lid main body 35 other than the upper limit position between the lid main body 35 and the operation plate 103). By providing the locking recess 114), the locking operation to the locking plate 120 can not be performed except at the upper limit position of the lid main body 35, and the locking operation can be performed only at the upper limit position. Therefore, the arm 34 does not fall down at the position of the lid main body 35 other than the upper limit position, and the partial contact of the packing 70 can be prevented more reliably.
Further, the lock mechanism is provided on the lid main body 35 and integrally moved up and down, and is provided on the lever lock 59 provided with the locking convex portion 61 and the operation plate 103 and engaged at the position of the lid main body 35 other than the upper limit position. By forming the locking convex portion 61 from the locking recess 114 that locks and blocks the locking operation of the operation plate 103, the lock mechanism can be easily formed using the upper and lower positions of the lid main body 35.

The structure of the lock mechanism is not limited to the above embodiment, and can be changed as appropriate, such as providing a plurality of lever locks, reversing the positions of the locking convex portion and the locking concave portion.
Moreover, about invention of translating a lid main body between an upper limit position and a lower limit position, suspension support of the lid main body by two divisions of an internal thread part and arm side lift, centering correction with a ball saucer and a steel ball, a lever The configuration of the lock by lock is not a requirement.

  Further, according to the pressure fryer 1 of the above embodiment, the pressure safety pin 75 which penetrates the lid main body 35 on the rotation locus of the notch 95 along with the rotation of the handle shaft 36 and the back side of the lid main body 35. A metal membrane 68 which can be displaced in the thickness direction of the lid 8 and a coil spring 79 for urging the pressure safety pin 75 toward the membrane 68 are provided, and the opening 6 is closed by the lid body 35 during cooking When the pressure in the oil tank 5 increases, the film body 68 moves upward and pushes up the pressure safety pin 75 against the bias of the coil spring 79, and the upper end of the pressure safety pin 75 is a notch in the flange portion 94. By locking to 95, the rotation of the handle shaft 36 is restricted by the pressure safety pin 75 locked to the flange portion 94 during pressure cooking. Therefore, the opening operation of the lid 8 can be prevented by reliably restricting the rotation operation of the handle 37 during pressure cooking with a simple configuration.

Particularly, in this case, the plurality of notches 95 are provided at equal intervals in the circumferential direction in the flange portion 94, so that the notches 95 are displaced relative to the pressure safety pin 75 and the pressure cooking is performed during pressure cooking. Even when the pressure safety pin 75 does not lock in the notch 95, the pressure safety pin 75 rotates when the notch 95 reaches the position of the pressure safety pin 75 by rotating the handle shaft 36 in the direction to open the lid body 35. It can be locked, and the rotational operation of the handle shaft 36 can be further restricted.
Further, since the inclined surface 78 which allows the rotation of the flange portion 94 accompanying the rotation of the handle shaft 36 in the screwing direction is provided at the upper end of the pressure safety pin 75, the lid body 35 is desired to be further pressed against the opening 6. The rotation of the handle shaft 36 is permitted, and the usability is improved.

Furthermore, by forming the film body 68 in a tapered shape in which the flat flat surface portion 72 is at the bottom, the flat surface portion 72 applies a force along the axial direction to the pressure safety pin 75 while allowing displacement. And the smooth operation of the pressure safety pin 75 can be ensured.
In particular, since the reinforcing plate 73 is internally attached to the upper surface of the flat surface portion 72, breakage of the film body 68 can be prevented.
Then, since the outer peripheral edge of the membrane 68 is screwed in the fitting groove 67 and supported from the lower side by the packing 70, the membrane 68 is packed even if the screw 69 is loosened by the displacement of the membrane 68. 70 makes it possible to hold.
On the other hand, since the projection 63 composed of the circumferential rib 64 and the radial rib 66 is formed on the back surface of the lid main body 35, the lid main body 35 is reinforced, and excessive displacement of the membrane 68 can be restricted.
Further, by forming the flange portion 94 in a gear shape as the plurality of notches 95 opened at the periphery of the flange portion 94, the pressure safety pin 75 can be used even when the handle shaft 36 is inclined. The notch 95 can be reliably locked.

The number of notches in the flange may be increased or decreased. Moreover, as a to-be-locked part, it is not restricted to a notch, It can be set as a through-hole, and it can also be set as the recessed part formed in the lower surface.
The form of the shaft member can also be appropriately changed, and a square shaft can be used in addition to the circular shaft, and a plate spring or a disc spring or the like can be adopted as the biasing means in addition to the coil spring.
Also, in the projecting part, one of the circumferential rib and the radial rib may be omitted as well as increase or decrease in the number of the circumferential rib and the radial rib, or a plurality of projections may be provided instead of both ribs to make the film abut. You can also Also for the membrane, the reinforcing plate may be omitted or attached separately from the packing.
Furthermore, about invention of making a shaft member lock to a flange part and controlling handle operation during cooking, parallel movement of a lid main body, two division of an internal thread part, suspension support of a lid main body by arm side lift, a ball pan Correction of misalignment with steel balls and configuration with lock by lever lock are not required.

Furthermore, according to the pressure fryer 1 of the above embodiment, the female screw 84 is fixed to the upper female screw 84A in the arm 34, and the lower female is not fixed in the arm 34 adjacent to the upper female screw 84A. The upper meshing projection 85A and the lower meshing projection 85B which are divided into the screw portion 84B and which mesh with each other in the forward and reverse rotation directions on the opposing surfaces of the upper female screw portion 84A and the lower female screw portion 84B By providing each with a predetermined play with respect to the direction, no force acts on the lower internal thread portion 84B at the initial stage of rotation of the handle shaft 36, so the initial stage of the rotation operation that conventionally required the most force. It can reduce the power required for the stage. After this initial stage, the upper and lower internal thread parts 84A and 84B are integrated by the engagement of the upper and lower meshing projections 85A and 85B, but the inertia generated at the handle shaft 36 makes the handle without applying a strong force. The shaft 36 can be operated to rotate. Further, after the initial stage, the axial distance of the male screw 83 can be secured long by coupling the upper and lower female screws 84A and 84B in the rotational direction, so that the handle shaft 36 can be stably screwed. Therefore, even if it is a weak woman etc., pressing of the cover body 8 to the oil tank 5 can be performed firmly.
In particular, here, the meshing portion of the upper female screw portion 84A is a square upper meshing protrusion 85A that protrudes concentrically with the rotation center, and the meshing portion of the lower female screw portion 84B is opposed to the upper meshing protrusion 85A. With the pair of lower meshing projections 85B and 85B located outside the pair of side surfaces, a reliable meshing can be obtained and the setting of the play can be easily performed.

In the above embodiment, the upper internal thread portion is fixed in the arm and the lower internal thread portion is screwed to the handle shaft, but may be upside down. Also, in the configuration of the meshing portion, the square upper meshing projections and the pair of lower meshing projections are upside down, or the projections formed in the circumferential direction on the opposing surfaces of both female screw portions are meshed with each other. You can also
Furthermore, as for the invention which divides the female screw part into two parts, the shaft member is locked to the flange part to restrict the operation of the handle during cooking, the parallel movement of the lid body, the suspension support of the lid body by the arm side lift, There is no requirement for the correction of misalignment by the ball receiver and the steel ball, and the configuration for locking by the lever lock.

In addition, according to the pressure fryer 1 of the above-described embodiment, the steel ball 93 is provided at the lower end of the handle shaft 36, and the ball receiving plate provided with the receiving recess 49 in which the exposed portion of the steel ball 93 is fitted on the upper surface of the lid body 35. By holding 46 so as to be movable in the horizontal direction, even if a shift occurs in the relative angle between the handle shaft 36 and the lid main body 35, the shift can be absorbed, and the advancing force of the handle shaft 36 can be efficiently lid main It can be transmitted to 35. Therefore, the sealability between the lid 8 and the oil tank 5 can be sufficiently secured.
In particular, here, since the receiving recess 49 is formed of the tapered first recess 50 and the concave spherical second recess 51, the steel ball 93 and the receiving recess 49 are formed even when the handle shaft 36 is inclined. Can be abutted annularly, and the lid body 35 can be efficiently pressed against the opening 6 even if the relative angle of the handle shaft 36 is inclined. Further, as compared with the case of abutting at one point, since the force acting on the ball receiving plate 46 can be dispersed when the handle shaft 36 is screw-fed, abrasion of the steel ball 93 and the ball receiving plate 46 can be prevented. The frequency of maintenance can be reduced.

In the above embodiment, the steel ball is provided on the handle shaft side and the ball receiving tray is provided on the lid main body side, but may be provided on opposite sides.
In the invention for achieving misalignment correction with a ball and a ball receiving member, the female screw portion is divided into two parts, the shaft member is engaged with the flange portion to restrict the handle operation during cooking, and the lid main body The configuration relating to the parallel movement, the suspension support of the lid main body by the arm side lift, and the configuration relating to the lock by the lever lock are not requirements.

On the other hand, according to the pressure fryer 1 of the above embodiment, the lid main body 35 is connected to the lower end of the cylindrical arm side lift 96 which is loosely inserted on the handle shaft 36 and locked to the lower end portion 36a thereof. Since the lid main body 35 is suspended and supported from the handle shaft 36, swinging of the lid main body 35 with respect to the handle shaft 36 can be allowed. Therefore, even if the positional relationship between the oil tank 5 and the lid main body 35 is distorted, the lid main body 35 is swung to be pressed by the opening 6 while absorbing the irregularity, and the adhesiveness with the oil reservoir 5 is secured. be able to.
In particular, here, connection between the arm side lift 96 and the lid main body 35 is made on the upper surface of the lid main body 35 at connecting pins 55 and 55 disposed at point symmetrical positions centering on the arm side lift 96, and arm side lift 96 The arm side lift 96 and the lid main body 35 can be easily connected by being provided in the through holes 100 and 100 which are provided in the through holes and into which the connecting pins 55 are inserted.
Further, the connecting pins 55, 55 are urged toward the arm side lift 96 by the coil spring 58, and the connecting pins 55, 55 at respective point symmetrical positions are connected by the fixing plate 56, so that the connecting plate 55 is connected by the fixing plate 56. By moving the pins 55, 55 in the direction away from the arm side lift 96, the connecting pins 55, 55 can be pulled out from the insertion holes 100, 100 without a jig, and the lid body 35 and the arm 34 can be easily separated. . Therefore, maintenance of the handle shaft 36 and the lid main body 35 can be easily performed. In addition, since the fixing plate 56 is located below the arm 34, the lid main body 35 is not separated by careless operation.
Further, the upper part of the arm side lift 96 is penetrated through the through hole (long hole 101) provided on the lower surface of the arm 34 to be positioned in the arm 34 and locked to the arm 34 on the outer periphery of the upper part By forming the flange 102 for retaining the arm side lift 96, even if the handle shaft 36 is broken, the suspension support of the lid body 35 is maintained by the arm side lift 96 which is retained from the arm 34. Ru.

In addition, the shape of a connection member can be changed suitably, and a large diameter connection part can also be abbreviate | omitted if a steel ball and a ball receptacle are not provided.
Further, the lid lifts and the connecting pins are not limited to a point symmetrical arrangement, and three or more sets may be arranged concentrically, and the connecting pins can be increased or decreased. Therefore, the position and the number of the insertion holes of the connecting member are also changed in accordance with the connecting pins. Further, instead of the lid lift separate from the lid main body, a connecting pin may be provided on a projection provided on the upper surface of the lid main body.
And about invention concerning the suspension support of a lid main body, the composition which aims at a core offset correction with a ball and a ball receiving member, the composition which divides an internal thread part into two, the shaft member is locked to a flange part and is cooking. The configuration for restricting the operation of the handle, the configuration for the parallel movement of the lid body, and the configuration for the lock by the lever lock are not requirements.

Then, according to the pressure fryer 1 of the above embodiment, the lid body 35 is engaged with the operation plate 103 at the lower limit position where the lid body 35 is pressed by the opening 6 to restrict the operation of the operation plate 103. By providing the lever lock 59 for releasing the operation restriction of the operation plate 103 at a position other than the lower limit position, the operation of the operation plate 103 during pressure cooking can be reliably restricted.
In particular, here, the L-shaped tip portion 59a of the lever lock 59 is locked to the regulating plate 110 of the operating plate 103 to restrict the operation of pulling the operating plate 103 forward, so that the operation of the operating plate 103 is restricted. It is easy to do.
Further, by forming the lower downward inclined surface 121a for guiding the lock rod 105 to the back side of the receiving groove 121 on the upper inner surface of the receiving groove 121 of the locking plate 120, locking is attempted when the arm 34 is going to ascend. The rod 105 is guided to the back of the receiving groove 121 by the lower inclined surface 121a, and the opening of the lid body 35 is restricted even if the locking of the lock rod 105 is insufficient.
Furthermore, a locking projection 61 is provided at the tip 59a of the lever lock 59 for locking the locking recess 114 provided on the regulating plate 110, and the locking projection 61 is locked to the locking recess 114. Since the pull-out operation of the operation plate 103 is restricted, the operation restriction state is more reliably held.

The shapes of the operation portion and the locking portion can be appropriately changed, and instead of the operation plate, the lock rod may be supported by a pair of links, or the locking plate may be formed of one block body. The inclined surface of the locking plate and the receiving groove can be omitted.
Moreover, about invention which aims at operation control by a lock member, the structure which concerns on the suspension support of a lid main body, the structure which aims at core misalignment correction with a ball and a ball receiving member, the structure which divides an internal thread part into two, a flange There is no requirement for the structure to be locked to the part to restrict the operation of the handle during cooking, and the structure relating to the parallel movement of the lid body.

  In addition, other configurations of the pressure fryer can be appropriately changed in common with each invention, and for example, the heating means can be replaced with a burner, a heater or the like instead of the pulse combustor. The handle at the upper end of the handle shaft may also have a Y-shape, a one-letter shape, or a ring shape in plan view. Moreover, each invention is employable even if it is a pressure fryer which is not a single oil tank but is arranged in a pair by right and left.

  1 · · Pressure fryer, 2 · · · Housing · 3 · · · · · · · · · · · · · · · · · · · · · · · · · · · opening · 7 · · · · · · · · · · · · · · · 10 combustion chamber 11 · · · tail pipe, 31 · · · burner controller, 32 · · · fly controller, 33 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 1 Coil spring 59, lever lock 61, locking projection 63, projecting portion 64, circumferential rib, radial rib 67, fitting groove 68, membrane body 70, 70 Packing, 72 · · · Flat surface portion, 73 · · Reinforcement plate, 75 · · Pressure safety port · · · · Inclined surface, 83 · · external thread, 84 · · internal thread, 84A · · upper internal thread, 84B · · lower internal thread, 85A · · upper engagement projection, 85B · · lower engagement projection · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Lift arm side 97 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 110

Claims (2)

An oil tank supported by the housing to open the top surface and containing cooking oil;
Heating means for heating the cooking oil in the oil tank;
It is connected to a horizontal rotation shaft installed in the housing at the rear of the oil tank, and can be rotated between an inclined position crossing the upper side of the opening in the front-rear direction and an upright position retracted backward from the upper side of the opening And the arm,
A handle shaft having a handle penetrating through the arm in an orthogonal manner and being screwed with a female screw inside the arm, and having a handle at an upper end portion which is the upper side of the arm at the collapsed position;
It is suspended and supported at the lower end of the handle shaft which is the lower side of the arm in the collapsed position, and is moved together with the handle shaft by screw feed of the handle shaft by the handle and after abutting on the opening A lid body pressed into said opening by the lower end of the shaft;
A ball is held in a rotatable and partially projecting state at one of the lower end portion of the handle shaft and the contact portion of the lower end portion of the lid body, and the ball is exposed to the other. What is claimed is: 1. A pressure fryer characterized in that a ball receiving member having a receiving recess into which a portion is fitted is held movably in the horizontal direction.   The receiving recess has a tapered first recess, the outer diameter of which is larger than the exposed portion of the ball, and the diameter decreases toward the bottom side so that the inner diameter is smaller than the exposed portion; The pressure fryer according to claim 1, characterized in that it comprises a concave spherical second recess that is continuous from one recess.

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