JP6565406B2 - Drain water treatment equipment - Google Patents

Description

  The present invention relates to a drain water treatment apparatus, and more particularly to a drain water treatment apparatus applied to a showcase that holds a commodity to be stored in a desired temperature state.

  2. Description of the Related Art Conventionally, as a drain water treatment device applied to a showcase, one having a drain pan is known. The drain pan is placed in the machine room below the storage chamber for storing the product, and stores drain water generated in the storage chamber. The drain water stored in the drain pan is sucked by a capillary phenomenon by a drain sheet standing on the bottom of the drain pan, and is evaporated and processed by the air passing around the drain pan (for example, see Patent Document 1). ).

JP-A-7-133777

  By the way, although not explicitly disclosed in Patent Document 1 described above, a drain switch is generally provided with a float switch. The float switch detects that the drain water stored in the drain pan is equal to or greater than a predetermined reference amount. This float switch is displaceable between a detection state located between the top and bottom of the drain pan and a retracted state retracted upward from the top of the drain pan.

  When this float switch detects that the drain water stored in the drain pan is equal to or greater than the reference amount, it notifies that the drain water stored in the drain pan is almost full through a notification means such as a buzzer sound. As a result, the operator removes the kick plate that closes the front opening of the machine room, removes the drain pan from the machine room through the front opening while leaving the float switch in the retracted state, and discharges the drain water. After that, the drain pan is placed in a predetermined position in the machine room while the float switch is retracted again, the float switch is set to the detection state, and then the kick plate is attached to close the front opening of the machine room. .

  When removing the drain pan from the machine room in this way, it is necessary to perform the release with the other hand while maintaining the float switch in the retracted state with one hand, and then when installing the drain pan in the machine room. However, it is necessary to install the float switch with the other hand while maintaining the float switch in the retracted state with one hand, and the draining operation of the drain water becomes complicated.

  In view of the above circumstances, an object of the present invention is to provide a drain water treatment apparatus that can simplify drain water discharge work.

  In order to achieve the above object, a drain water treatment apparatus according to the present invention is placed in a machine room below a storage chamber for storing a product and can store drain water generated in the storage chamber. Detecting a drain pan and a drain water stored in the drain pan exceeding a predetermined reference amount, a detection state located between an upper portion and a bottom portion of the drain pan, and the drain pan A drain water treatment apparatus provided with a float switch that is displaceable between a retreat state and a retreat state that is retreated from the upper side of the upper portion of the water supply unit, a holding unit that holds the float switch in the retreat state, and the holding When the kick plate provided so as to be detachable so as to open and close the opening of the machine chamber is mounted so as to close the opening when the float holds the float switch in the retracted state, the holding portion Said to release the holding of the float switch by in is characterized in that a release mechanism for the float switch to detect the state.

  In the drain water treatment apparatus according to the present invention, the holding unit may hold the float switch in a retracted state by adsorbing the holding unit by a magnetic force to an adsorbed part provided on a top part of the machine room. Features.

  According to the present invention, since the holding unit holds the float switch in the retracted state, the operator does not need to perform an operation to maintain the float switch in the retracted state if the float switch is in the retracted state. The dish can be easily removed from the machine room. In addition, when the holding unit holds the float switch in the retracted state, when the kick plate that is detachably provided so as to open and close the opening of the machine room is mounted so as to close the opening, the release mechanism is Since the float switch is released from the holding state and the float switch is brought into the detection state, the float switch can be brought into the detection state even when the kick plate is mounted without forgetting to return the float switch to the detection state. Therefore, the drain water discharge operation can be simplified.

1 is a cross-sectional side view of a showcase to which a drain water treatment apparatus according to Embodiment 1 of the present invention is applied. FIG. 2 is a perspective view showing a case where the drain water treatment apparatus according to Embodiment 1 of the present invention is viewed from the front. FIG. 3 is a left side view showing the main part of the drain water treatment apparatus shown in FIG. 2 as viewed from the left. FIG. 4 is a rear view showing the main part of the drain water treatment apparatus shown in FIG. 2 when viewed from the rear. FIG. 5 is a perspective view showing the release mechanism shown in FIGS. FIG. 6 is a perspective view showing the drain water treatment device as viewed from the front. FIG. 7 is a left side view showing the main part of the drain water treatment apparatus shown in FIG. 6 as viewed from the left. FIG. 8 is a rear view showing the main part of the drain water treatment apparatus shown in FIG. 6 when viewed from the rear. FIG. 9 is an explanatory view showing the operation of the release blade portion. FIG. 10 is an explanatory diagram showing the operation of the release blade portion. FIG. 11: is a perspective view which shows the case where the drain water treatment apparatus which is Embodiment 2 of this invention is seen from the front. FIG. 12 is a left side view of the drain water treatment apparatus shown in FIG. FIG. 13 is a rear view of the drain water treatment apparatus shown in FIG. 11. FIG. 14 is a perspective view showing the release blade portion shown in FIGS. 11 to 13. FIG. 15 is a perspective view illustrating the release support portion illustrated in FIGS. 11 to 13. FIG. 16 is a perspective view showing the drain water treatment apparatus as viewed from the front. FIG. 17 is a left side view of the drain water treatment apparatus. FIG. 18 is a rear view of the drain water treatment apparatus. FIG. 19 is an explanatory diagram showing the operation of the release blade portion. FIG. 20 is an explanatory diagram illustrating the operation of the release blade portion.

  Hereinafter, preferred embodiments of a drain water treatment apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

<Embodiment 1>
1 is a cross-sectional side view of a showcase to which a drain water treatment apparatus according to Embodiment 1 of the present invention is applied. The showcase illustrated here includes a case body 10.

  The case main body 10 is a substantially rectangular casing, and is provided with a storage chamber 10a having a heat insulating structure and a machine chamber 10b provided in a lower region of the storage chamber 10a. The storage chamber 10a is formed with a front opening 11, in which a storage chamber 12 is defined, and an air circulation means 20 is provided.

  The storage room 12 is a room defined in such a manner as to face the front opening 11, and a plurality of product display shelves 13 are arranged in a plurality of stages along the vertical direction.

  The air circulation means 20 includes an air passage 21 and a circulation fan 22. The air passage 21 is an air passage from the suction port 23 to the blowout port 24. Here, the suction port 23 is an opening for sucking air inside the storage chamber 12, and extends along the left-right direction of the storage chamber 12. The suction port 23 is disposed at the lower front edge of the storage chamber 12, that is, at the lower portion near the front opening 11 of the case body 10.

  The air outlet 24 is an opening for blowing air into the storage chamber 12 and extends along the left-right direction of the storage chamber 12. The air outlet 24 is disposed on the upper front edge of the storage chamber 12, that is, the upper portion of the case body 10 in the vicinity of the front opening 11, and a flow regulating member 24a having a honeycomb structure in which the pores are formed in a honeycomb shape. It is attached.

  Such an air passage 21 is outside the storage chamber 12 and below the lower duct 21 a, outside the storage chamber 12, the back duct 21 b on the back side, and outside the storage chamber 12. In this manner, the upper duct 21c located above is connected to each other.

  The circulation fan 22 circulates air and is disposed at a predetermined portion of the lower duct 21a. In Embodiment 1, the circulation fan 22 is disposed at a predetermined part of the lower duct 21a. However, in the present invention, the arrangement part of the circulation fan 22 is not particularly limited, and the circulation fan 22 is provided. As long as it is a place where the above function can be exhibited, it may be disposed at any part.

  In such an air circulation means 20, when the circulation fan 22 is driven, the air inside the storage chamber 12 is sucked through the suction port 23, and the sucked air is sent to the blowout port 24 in such a manner that it passes through the air passage 21. Then, the air is circulated between the inside and the outside of the storage chamber 12 by blowing the air into the storage chamber 12 through the air outlet 24.

  An evaporator 25 is provided in the rear duct 21 b of the air passage 21. The evaporator 25 constitutes a refrigerant circulation means that circulates the refrigerant together with a refrigeration device (not shown) such as a compressor and a condenser that are disposed in the machine room 10b. Here, the compressor compresses the refrigerant, and the condenser condenses the refrigerant compressed by the compressor. The refrigerant condensed by the condenser is adiabatically expanded by the expansion valve to be brought into a low temperature and low pressure state. Further, an outside fan blower (not shown) is provided on the rear side of the condenser.

  The evaporator 25 exchanges heat between the air passing through the rear duct 21b from the lower side to the upper side by the circulation fan 22 and the refrigerant adiabatically expanded by the expansion valve. More specifically, the evaporator 25 The air passing through the rear duct 21b (air passage 21) is cooled by evaporation. The refrigerant evaporated in the evaporator 25 returns to the compressor again and is compressed.

  The machine room 10b is provided in a lower area of the storage room 10a and is closed on the rear side and the left and right sides. A machine room opening 10c is formed in the front surface of the machine room 10b, and the machine room opening 10c is closed by a kick plate 10d.

  A discharge duct 31 communicates with the machine room 10b. The discharge duct 31 is provided on the back side of the back duct 21b of the air passage 21 so as to be partitioned from the back duct 21b and communicates in the vertical direction. The exhaust duct 31 has an exhaust introduction port 32 formed in the lower part and an exhaust port 33 formed in the upper part. The exhaust introduction port 32 is an opening that communicates with the machine room 10b. The discharge port 33 is an opening for discharging the air that has passed through the discharge duct 31 to the outside.

  A drain water treatment device 40 is provided in the machine room 10b. 2 to 4 show a drain water treatment apparatus 40 according to Embodiment 1 of the present invention, FIG. 2 is a perspective view showing the case seen from the front, and FIG. FIG. 4 is a left side view showing the main part as viewed from the left, and FIG. 4 is a rear view showing the main part in FIG. 2 as viewed from the rear. The drain water treatment apparatus 40 exemplified here includes a drain pan 41, a float switch 42, and a release mechanism 50.

  The drain pan 41 is placed on a support member 44 installed at the bottom on the right side in the machine room 10b. The drain pan 41 is for storing drain water guided through a drain guide portion 34 provided in the heat insulating bottom portion 15 that partitions the storage chamber 12 and the machine chamber 10b. Here, the heat insulating bottom 15 constitutes the top plate of the machine room 10b. A block-shaped attracted portion 151 made of, for example, iron is provided on the lower surface on the front side of the heat insulating bottom portion 15.

  The drain guide part 34 includes a drain pipe 341 and a drain guide 342. The drain pipe 341 is formed in such a manner as to penetrate the heat insulating bottom 15 along the vertical direction. The upper opening of the drain pipe 341 serves as an inlet, and the inlet communicates with the storage chamber 10a (lower duct 21a) of the case body 10. On the other hand, the lower opening of the drain pipe 341 is an outlet. Such drain piping 341 allows drain water introduced from the inlet to pass through and is discharged from the outlet.

  The drain guide 342 is provided so as to cover the outlet of the drain pipe 341 on the lower surface of the heat insulating bottom 15. The drain guide 342 causes the drain water discharged from the outlet of the drain pipe 341 to drop downward from the dropping port 342a formed in itself.

  A drain sheet 411 (see FIG. 1) is erected on the drain pan 41. The drain sheet 411 sucks the drain water, which is guided and stored in the drain pan 41 through the drain guide portion 34, by capillary action. A blower fan 35 is provided on the rear side of the drain pan 41.

  The float switch 42 is a conventionally known one, and is attached to the unusually shaped attachment plate portion 43 so as to protrude outward. The mounting plate portion 43 is disposed so as to be swingable about the axis of a shaft portion 45 extending in the front-rear direction with respect to the front surface portion 44 a of the support member 44. Thus, the float switch 42 is swingably disposed on the support member 44 via the mounting plate portion 43. And the float switch 42 will be in the detection state which becomes self below in the normal state in which the attachment board part 43 will be in a free state.

  As described above, when the float switch 42 is in the detection state, the float switch 42 is positioned inside the drain pan 41, that is, between the top and bottom of the drain pan 41. That is, when the float switch 42 is in the detection state, the float switch 42 is positioned at a predetermined height from the bottom of the drain pan 41. Therefore, the float switch 42 detects that there is water when the surface level of the drain water stored in the drain pan 41 is equal to or higher than a predetermined height. Thereby, the float switch 42 detects that the drain water stored in the drain pan 41 is equal to or more than a predetermined reference amount.

  On the mounting plate 43 to which such a float switch 42 is attached, a holding portion 46 that holds a magnet 46 a is attached to a portion that is an upper right side of the float switch 42.

  The release mechanism 50 includes a release blade portion 50a and a release support portion 50b. The release blade portion 50a is made of, for example, a steel plate or the like, and the action piece portion 51 and the contact piece portion 52 are integrally formed. As shown in FIG. 5, the action piece portion 51 is a flat plate portion, and the right end portion thereof is bent downward. A cutout 51 a is formed on the left side of the action piece 51. As will be described later, the notch 51a is for allowing the holding portion 46 to enter.

  The contact piece portion 52 is a portion extending from the front end portion of the action piece portion 51 so as to be gradually inclined downward toward the front when the action piece portion 51 becomes a horizontal plane. That is, the contact piece portion 52 has an obtuse angle between the action piece portion 51 and the lower surfaces of each other. Further, the length of the contact piece 52 in the front-rear direction is shorter than the length of the action piece 51 in the front-rear direction. A contact portion 52 a that is bent upward is formed at the front end of the contact piece 52.

  In the release blade portion 50a, a plurality of (three in the illustrated example) rectangular engagement holes 53 are formed at predetermined intervals along the left-right direction at the boundary between the action piece portion 51 and the contact piece portion 52. Is formed.

  The release support portion 50b is made of, for example, a steel plate, like the release blade portion 50a. The release support portion 50b is provided at an upper portion on the front side of the mounting plate portion 43 by being fastened to a frame body (not shown) of the case body 10 via a fastening member. As shown in FIG. 5, a plurality (three in the illustrated example) of rectangular engagement protrusions 55 are formed on the release support portion 50 b in the region on the left side of the central portion. It is formed at equal intervals.

  In such a release mechanism 50, the engagement protrusion 55 formed in the release support portion 50b is bent after relatively entering the engagement hole 53 formed in the release blade portion 50a, so that the release blade The portion 50a is swingably supported by the release support portion 50b with the portion where the engagement protrusion 55 and the engagement hole 53 are in contact as an axis. And when the float switch 42 will be in a detection state, the cancellation | release blade | wing part 50a becomes the attitude | position which inclined gradually downward as this action piece part 51 headed back by the dead weight of the action piece part 51. FIG. .

  In such a drain water treatment apparatus 40, when drain water stored in the drain pan 41 is discharged, the kick plate 10d is removed to open the machine chamber opening 10c of the machine chamber 10b. Then, the mounting plate portion 43 is swung upward by the operator's fingers or the like, and the float switch 42 is detached from the drain pan 41. As shown in FIGS. 6 to 8, the magnet 46a of the holding portion 46 attached to the attachment plate portion 43 enters the cutout 51a of the action piece portion 51 constituting the release blade portion 50a, and the attracted portion The float switch 42 is retracted upward from the top of the drain pan 41 by being attracted to the magnetic flux 151 by the magnetic force. Thereby, the holding unit 46 holds the float switch 42 in the retracted state.

  When the float switch 42 is in the retracted state in this way, in the release mechanism 50, the release piece 50a is brought into contact with and pressed against the mounting plate 43 from the lower side by the action piece 51 of the release blade 50a. With the portion where the engagement hole 53 of 50a and the engagement protrusion 55 of the release support portion 50b contact each other as an axis, the release blade portion 50a swings so that the action piece portion 51 is directed upward. The posture is sandwiched between the mounting plate portion 43 and the attracted portion 151. That is, the release mechanism 50 allows the holding unit 46 to hold the float switch 42 in the retracted state.

  In this way, the machine chamber opening 10c is opened and the float switch 42 is held in the retracted state, so that the drain pan 41 can be taken out of the machine chamber 10b, and is thus stored in the drain pan 41. Drain water can be discharged.

  Thereafter, the drain pan 41 from which the drain water has been discharged is installed at a predetermined location in the machine room 10b, and the float is caused by the operator swinging the mounting plate 43 downward with a force that overcomes the magnetic force of the holding portion 46. The switch 42 can be brought into the detection state again. As a result, in the release blade portion 50a of the release mechanism 50, the action piece portion 51 is directed downward with the portion where the engagement hole 53 of the release blade portion 50a is in contact with the engagement protrusion 55 of the release support portion 50b as an axis. As the action piece 51 moves backward, the posture gradually tilts downward. Then, the machine room opening 10c of the machine room 10b can be returned to the original state by closing it with the kick plate 10d.

  By the way, after installing the drain pan 41 that drained the drain water at a predetermined location in the machine room 10b, the machine chamber opening 10c of the machine room 10b was blocked by the kick plate 10d without setting the float switch 42 to the detection state. In this case, as shown in FIG. 9, the base end portion of the contact portion 52a in the contact piece portion 52 of the release blade portion 50a in which the action piece portion 51 is sandwiched between the mounting plate portion 43 and the attracted portion 151. The upper end portion of the kick plate 10d comes into contact with the top.

  Thus, when the upper end portion of the kick plate 10d abuts on the base end portion of the abutting portion 52a, the release blade portion 50a is engaged with the engagement hole 53 of the release blade portion 50a and the engagement protrusion piece of the release support portion 50b. As shown in FIG. 10, the action piece 51 swings downwardly with the portion in contact with 55 as the axis. As a result of the release blade portion 50a swinging downward as described above, the mounting plate portion 43 is pressed, whereby the adsorption by the magnetic force between the magnet 46a of the holding portion 46 and the attracted portion 151 is released, and the mounting plate portion 43 can swing downward to bring the float switch 42 back into the detection state.

  As described above, according to the drain water treatment apparatus 40 of Embodiment 1 of the present invention, the holding unit 46 holds the float switch 42 in the retracted state, so that the operator can place the float switch 42 in the retracted state. Thus, it is not necessary to perform an operation for maintaining the float switch 42 in the retracted state, and the drain pan 41 can be easily taken out from the machine room 10b. Moreover, when the holding portion 46 holds the float switch 42 in the retracted state, when the kick plate 10d is mounted, the release blade portion 50a that constitutes the release mechanism 50 causes the magnet 46a of the holding portion 46 and the attracted portion 151 to move. Since the float switch 42 is brought into the detection state by releasing the attraction by the magnetic force, the float switch 42 can be brought into the detection state even when the kick plate 10d is mounted without forgetting to return the float switch 42 to the detection state. Therefore, the drain water discharge operation can be simplified.

<Embodiment 2>
11 to 13 show a drain water treatment apparatus 60 according to Embodiment 2 of the present invention, respectively. FIG. 11 is a perspective view showing the case viewed from the front, and FIG. FIG. 13 is a left side view showing the case seen from the rear, and FIG. 13 is a rear view showing the case seen from the rear. In addition, the same code | symbol is attached | subjected and demonstrated to what has the same structure as what was demonstrated in Embodiment 1 mentioned above. The drain water treatment apparatus 60 exemplified here includes a drain pan 61, a float switch 62, and a release mechanism 70.

  The drain pan 61 is installed at the bottom on the right side in the machine room 10b. The drain pan 61 is for storing drain water guided through the drain guide portion 34 provided in the heat insulating bottom portion 15 that partitions the storage chamber 12 and the machine chamber 10b. A block-shaped attracted portion 151 made of, for example, iron is provided on the lower surface on the front side of the heat insulating bottom portion 15.

  The drain guide part 34 includes a drain pipe 341 and a drain guide 342. The drain pipe 341 is formed in such a manner as to penetrate the heat insulating bottom 15 along the vertical direction. The upper opening of the drain pipe 341 serves as an inlet, and the inlet communicates with the storage chamber 10a (lower duct 21a) of the case body 10. On the other hand, the lower opening of the drain pipe 341 is an outlet. Such drain piping 341 allows drain water introduced from the inlet to pass through and is discharged from the outlet.

  The drain guide 342 is provided so as to cover the outlet of the drain pipe 341 on the lower surface of the heat insulating bottom 15. The drain guide 342 causes the drain water discharged from the outlet of the drain pipe 341 to drop downward from the dropping port 342a formed in itself.

  A drain sheet 411 (see FIG. 1) is erected on the drain pan 61. The drain sheet 411 sucks the drain water, which is guided and stored in the drain pan 61 through the drain guide portion 34, by capillary action. A blower fan 35 is provided on the rear side of the drain pan 61.

  The float switch 62 is a conventionally known one, and is attached to the attachment plate 63 having a different shape so as to protrude to the outside. The mounting plate portion 63 is a shaft of a shaft portion 65 that extends in the front-rear direction with respect to the bottom surface of the machine room 10 b, that is, the front surface 64 a of the support plate portion 64 erected on the right side of the installation location of the drain pan 61. It is arranged so as to be swingable around the center. As a result, the float switch 62 is swingably disposed on the support plate portion 64 via the mounting plate portion 63. And the float switch 62 will be in the detection state which becomes self below in the normal state which the attachment board part 63 will be in a free state.

  As described above, when the float switch 62 is in the detection state, the float switch 62 is located inside the drain pan 61, that is, between the top and bottom of the drain pan 61. That is, when the float switch 62 is in the detection state, the float switch 62 is positioned at a predetermined height from the bottom of the drain pan 61. Therefore, the float switch 62 detects that there is water when the surface level of the drain water stored in the drain pan 61 is equal to or higher than a predetermined height. Thereby, the float switch 62 detects that the drain water stored in the drain pan 61 is equal to or more than a predetermined reference amount.

  A holding portion 66 for holding a magnet 66a is attached to the mounting plate portion 63 to which such a float switch 62 is attached, at a location on the right side of the float switch 62.

  The release mechanism 70 includes a release blade portion 70a and a release support portion 70b. The release blade portion 70a is made of, for example, a steel plate or the like, and the action piece portion 71 and the contact piece portion 72 are integrally formed. As shown in FIG. 14, the action piece portion 71 is a flat plate portion, and the right end portion thereof is bent downward. A cutout 71 a is formed on the left side of the action piece 71. As will be described later, this notch 71a is for allowing the holding portion 66 to enter.

  The contact piece 72 is a part extending from the front end of the action piece 71 so as to be gradually inclined downward toward the front when the action piece 71 becomes a horizontal plane. That is, the contact piece 72 has an obtuse angle between the action piece 71 and the lower surfaces of each other. Further, the length of the contact piece 72 in the front-rear direction is shorter than the length of the action piece 71 in the front-rear direction.

  In the release blade portion 70a, a plurality of (five in the illustrated example) rectangular engagement holes 73 are formed at predetermined intervals along the left-right direction at the boundary portion between the action piece portion 71 and the contact piece portion 72. Is formed.

  The release support part 70b is made of, for example, a steel plate or the like, similarly to the release blade part 70a. As shown in FIGS. 11 and 13, the release support portion 70 b has a substantially L-shaped fastening piece 80 screwed into an upwardly extending portion 74 that extends upward, and the fastening piece 80 is a view of the case body 10. By being screwed into a frame body (not shown), it is provided in the upper part on the front side of the mounting plate 63. As shown in FIG. 15, a plurality (five in the illustrated example) of rectangular engagement protrusions 75 are equal to the engagement hole 73 in the central portion of the upper extension portion 74 of the release support portion 70 b. It is formed at intervals.

  In such a release mechanism 70, the release protrusion 70 a is released and supported by the engagement protrusion 75 formed in the release support portion 70 b relatively entering the engagement hole 73 formed in the release blade portion 70 a. When the float switch 62 is in the detection state, being supported by the portion 70b, the release blade portion 70a is gradually inclined downward as the action piece portion 71 moves rearward.

  In such a drain water treatment apparatus 60, when drain water stored in the drain pan 61 is discharged, the kick plate 10d is removed to open the machine chamber opening 10c of the machine chamber 10b. Then, the mounting plate 63 is swung upward by the operator's fingers and the like, and the float switch 62 is detached from the inside of the drain pan 61. Then, as shown in FIGS. 16 to 18, the magnet 66a of the holding portion 66 attached to the attachment plate portion 63 enters the cutout 71a of the action piece portion 71 constituting the release blade portion 70a and covers the machine chamber 10b. The float switch 62 is retracted upward from the upper portion of the drain pan 61 by being attracted to the attracting portion 151 by magnetic force. Thereby, the holding unit 66 holds the float switch 62 in the retracted state.

  In this way, when the float switch 62 is in the retracted state, in the release mechanism 70, the release piece 70a is brought into contact with and pressed against the mounting plate 63 from below by the action piece 71 of the release blade 70a. With the portion where the engagement hole 73 of 70a is in contact with the engagement protrusion 75 of the release support portion 70b as the axis, the release blade portion 70a swings so that the action piece portion 71 is directed upward. The posture is sandwiched between the mounting plate portion 63 and the attracted portion 151. That is, the release mechanism 70 allows the holding unit 66 to hold the float switch 62 in the retracted state.

  Thus, the machine chamber opening 10c of the machine room 10b is opened and the float switch 62 is held in the retracted state, whereby the drain pan 61 can be taken out of the machine chamber 10b. The drain water stored in can be discharged.

  Thereafter, the drain pan 61 from which the drain water has been discharged is installed at a predetermined location in the machine room 10b, and the float is caused by the operator swinging the mounting plate portion 63 downward with a force that overcomes the magnetic force of the holding portion 66. The switch 62 can be brought into the detection state again. As a result, the release blade portion 70a of the release mechanism 70 has the action piece portion 71 directed downward with the portion where the engagement hole 73 of the release blade portion 70a is in contact with the engagement protrusion 75 of the release support portion 70b as the axis. The action piece 71 gradually tilts downward as the action piece 71 moves rearward. Then, the machine room opening 10c of the machine room 10b can be returned to the original state by closing it with the kick plate 10d.

  By the way, after the drain pan 61 from which the drain water has been discharged is installed at a predetermined location in the machine room 10b, the machine chamber opening 10c of the machine room 10b is blocked by the kick plate 10d without bringing the float switch 62 into the detection state. In this case, as shown in FIG. 19, the upper end portion of the kick plate 10 d is disposed at the tip of the abutting piece 72 of the release blade portion 70 a where the acting piece 71 is sandwiched between the mounting plate 63 and the attracted portion 151. Abut.

  In this way, when the upper end portion of the kick plate 10d is in contact with the tip of the contact piece 72, the release blade portion 70a is engaged with the engagement hole 73 of the release blade portion 70a and the engagement protrusion piece 75 of the release support portion 70b. The action piece 71 attempts to swing upward with the portion in contact with the axis as the axis, but is restricted by the attracted portion 151 of the machine chamber 10b. Therefore, a downward component of the force received from the upper end portion of the kick plate 10d is applied, and the release blade portion 70a is displaced substantially in parallel downward.

  As a result of the release blade portion 70a being displaced substantially parallel downward, the adsorption of the magnet 66a of the holding portion 66 and the attracted portion 151 is released, and the mounting plate portion 63 swings downward. Thus, the float switch 62 can be brought into the detection state again.

  Then, as shown in FIG. 20, the release blade portion 70a has the action piece portion 71 as an axis with the portion where the engagement hole 73 of the release blade portion 70a is in contact with the engagement protrusion 75 of the release support portion 70b as an axis. By swinging downward, the action piece 71 gradually leans downward as it moves backward, and can be returned to its original state.

  As described above, according to the drain water treatment apparatus 60 according to the second embodiment of the present invention, since the holding unit 66 holds the float switch 62 in the retracted state, the operator puts the float switch 62 in the retracted state. Then, there is no need to perform an operation for maintaining the float switch 62 in the retracted state, and the drain pan 61 can be easily taken out from the machine room 10b. In addition, when the holding unit 66 holds the float switch 62 in the retracted state, when the kick plate 10d is mounted, the release blade portion 70a constituting the release mechanism 70 causes the magnet 66a of the holding unit 66 and the attracted portion 151 to move. Since the float switch 62 is brought into the detection state by releasing the attraction by the magnetic force, the float switch 62 can be brought into the detection state even when the kick plate 10d is mounted without forgetting to return the float switch 62 to the detection state. Therefore, the drain water discharge operation can be simplified.

DESCRIPTION OF SYMBOLS 10 Case main body 10a Storage room 10b Machine room 10c Machine room opening 10d Kick plate 11 Front opening 12 Storage room 13 Merchandise display shelf 20 Air passage 22 Circulation fan 23 Suction port 24 Outlet 25 Evaporator 40 Drain water treatment device 41 Drain plate 42 Float switch 46 Holding part 50 Release mechanism 50a Release blade part 50b Release support part

Claims (2)

A drain pan placed in the machine room below the storage chamber for storing the product and capable of storing drain water generated in the storage chamber;
Detecting that the drain water stored in the drain pan is equal to or greater than a predetermined reference amount, a detection state located between the top and bottom of the drain pan, and above the top of the drain pan A drain water treatment device comprising a float switch displaceable between a retracted state and a retracted state,
A holding unit for holding the float switch in the retracted state;
When the holding unit holds the float switch in the retracted state, when the kick plate that is detachably provided so as to open and close the opening of the machine room is mounted so as to close the opening, the holding unit A drain water treatment apparatus comprising: a release mechanism that releases the holding of the float switch to bring the float switch into a detection state.   2. The drain water treatment according to claim 1, wherein the holding unit holds the float switch in a retracted state by being adsorbed by a magnetic force to an adsorbed unit provided at a top of the machine room. apparatus.

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