JP6105999B2 - Strainer device, hot water supply device - Google Patents

Description

Embodiments described herein relate generally to a strainer device that collects dust in a fluid, and a hot water supply device including the strainer device .

  Conventionally, in a hot water supply device, a strainer device is provided at a water supply port. The strainer device filters water by collecting dust contained in the supplied water. The strainer device includes a net and a frame body that supports the net.

  For example, when the net and the frame are integrally formed, they may be insert-molded.

JP 2006-116366 A

  There is a need for strainer devices that can keep costs low.

According to the embodiment, the strainer device protrudes from the first fixing cylinder portion so as to cover the first fixing cylinder portion having both ends opened and the opening at one end of the first fixing cylinder portion. A strainer mesh having a cylindrical mesh body closed at the other end opposite to the first fixing cylinder, a pipe having a flow path for fluid flow, and the pipe A holding part that is detachably fixed and holds the strainer mesh in the flow path.
The holding portion includes a plurality of column portions in which the strainer mesh is inserted from the other end side of the mesh body, and is arranged at intervals in the circumferential direction of the mesh body, and the adjacent column portions. The insertion portion where the mesh body is exposed to the flow path through the gap and the first fixing cylinder portion of the strainer mesh inserted into the insertion portion are detachably press-fitted to close the mesh body. And a second fixing cylinder portion located on the upstream side of the flow path from the other end . The second fixing cylinder part has a notch groove opened on an outer surface and an inner surface thereof, and the first fixing cylinder part press-fitted inside the second fixing cylinder part through the notch groove. The outer surface of is partially exposed .

The disassembled perspective view which shows the tank apparatus of the hot water supply apparatus which concerns on 1st Embodiment. The front view which shows the water channel component mounting plate of the tank apparatus. The disassembled perspective view which shows the strainer apparatus of the tank apparatus. Sectional drawing which cut | disconnects and shows the state in which the strainer apparatus was united. The perspective view which shows the state in which the holding part of the strainer apparatus is holding the strainer mesh. The perspective view which shows the state from which the strainer mesh was removed from the holding | maintenance part. Sectional drawing which shows the state which cut | disconnected the integrated object of the same holding | maintenance part and strainer mesh shown along the F7-F7 line | wire of FIG. The perspective view which shows the operation | movement which removes the strainer mesh from the holding | maintenance part. The perspective view which shows the holding | maintenance part of the hot water supply apparatus which concerns on 2nd Embodiment. Sectional drawing which cuts and shows the state in the middle of the holding | maintenance part being removed from the attachment hole part of a piping part in the surface which passes along the centerline of a 3rd flow-path part.

  The strainer device and hot water supply device according to the first embodiment will be described with reference to FIGS. FIG. 1 is an exploded perspective view showing a tank device 30 of the hot water supply device 20. The hot water supply device 20 includes a tank device 30 shown in FIG. 1 and a heat pump unit 40 (shown in FIG. 2). The hot water heated by the heat pump unit 40 is stored in the tank device 30. The hot water supply device 20 is, for example, a heat pump hot water supply device.

  FIG. 2 is a front view showing the water channel component mounting plate 9 provided with an inlet and an outlet through which the fluid flows in the tank device 30. As shown in FIG. 2, the heat pump unit 40 is connected to the tank device 30 via the above-described inlet and outlet. The inflow port and the outflow port will be specifically described later. In FIG. 2, only the outline of the heat pump unit 40 is indicated by a two-dot chain line.

  As shown in FIG. 1, the tank device 30 includes a top plate 1, a left side panel 2, a right side panel 3, a back panel 4, a front panel 5, a tank can body 6, a bottom plate 7, and a fixed plate. A leg 8, a water channel component mounting plate 9, and an electrical component box 10 are provided.

  The tank can body 6 is disposed on the bottom plate 7. A fixed leg 8 is provided on the bottom plate 7. The fixed leg 8 extends downward from the bottom plate 7. The fixed leg 8 is fixed on, for example, the ground or floor where the tank device 30 is installed. The top plate 1, the left side panel 2, the right side panel 3, the back panel 4 and the front panel 5 cover the periphery of the tank can body 6. That is, the top plate 1, the left side panel 2, the right side panel 3, the back panel 4, and the front panel 5 form a housing that accommodates the tank can body 6. The electrical component box 10 accommodates a control device that operates the hot water supply device 20, and is fixed to the inner surface of the front panel 5, for example.

  The water channel component mounting plate 9 is fixed to the lower surface of the bottom plate 7. Here, the above-mentioned inflow port and outflow port provided in the water channel component mounting plate 9 will be specifically described. As shown in FIG. 2, the tank device 30 includes a water supply port 31 for supplying water into the tank can body 6, an HP return passage port 32, an HP forward passage port 33, and a hot water supply port 34.

  The water supply port 31 communicates with the tank can body 6. The water supply port 31 is provided with a strainer device 50. The water supply port 31 is connected to a water supply source such as a water pipe via the strainer device 50. Water supplied from this water supply source is supplied to the tank can body 6 through the strainer device 50.

The HP forward path port 33 is connected to the heat pump unit 40 and supplies the liquid in the tank can body 6 to the heat pump unit 40. The liquid here is water, hot water heated by the heat pump unit 40, or a mixture thereof. The HP return path port 32 is connected to the heat pump unit 40 and supplies the hot water heated by the heat pump unit 40 to the tank can body 6.

  FIG. 3 is an exploded perspective view showing the strainer device 50. In FIG. 3, the strainer device 50 is removed from the water supply port 31 and disassembled. As shown in FIG. 3, the strainer device 50 includes a piping part 51, a holding part 52, and a strainer mesh 53.

  FIG. 4 is a cross-sectional view showing a state in which the strainer device 50 is integrated. As shown in FIG. 4, the pipe part 51 has a flow path 54 formed therein. In addition, the piping part 51 is attached to the water supply port 31 and communicates with the water supply port 31, and the above-described second attachment port part 56 attached to the water supply source such as a water pipe, for example. And.

  The channel 54 is a single channel that connects the first and second attachment ports 55 and 56. In FIG. 3, the flow of water is indicated by an arrow F. As indicated by the arrow F, water flows from the second attachment port portion 56 toward the first attachment port portion 55. This is because pressure is applied from a water supply source such as a water pipe.

As shown in FIG. 4, the flow path 54 includes a first flow path part 61, a second flow path part 62, and a third flow path part 63. The first flow path portion 61 communicates with the second attachment port portion 56 and extends linearly. The second flow path portion 62 communicates with the first attachment port portion 55 and extends linearly. Although the extending directions of the first and second flow path portions 61 and 62 are parallel to each other, they are arranged offset from each other in a direction perpendicular to the extending direction. The third flow path portion 63 communicates the other ends of the first flow path portion 61 and the second flow path portion 62 on the opposite side to the open end. The third flow path portion 63 extends in a direction perpendicular to the direction in which the first and second flow path portions 61 and 62 extend.

Further, the pipe portion 51, mounting holes 64 are formed. As shown in FIGS. 2 and 4 , the attachment hole portion 64 is formed in a portion extending with respect to the third flow path portion 63 and penetrates the piping portion 51. In other words, the attachment hole portion 64 and the third flow path portion 63 are aligned on the same straight line. A female screw portion 65 is formed on the inner surface of the mounting hole portion 64. The female thread portion 65 has a plurality of threaded threads 69 arranged side by side.

  As shown in FIG. 4, the holding unit 52 holds the strainer mesh 53. The holding part 52 is inserted into the attachment hole part 64 of the pipe part 51 and fixed to the pipe part 51. The fixing of the holding part 52 to the piping part 51 will be described later. FIG. 5 is a perspective view showing a state in which the holding unit 52 holds the strainer mesh 53. FIG. 6 is a perspective view showing a state in which the strainer mesh 53 is removed from the holding portion 52.

As shown in FIG. 6, the strainer mesh 53 includes a mesh body 67 and a first fixing cylinder portion 66. The first fixing cylinder portion 66 has a cylindrical shape that is open at both ends. Mesh body 67 is protruded from one end of the first fixed cylindrical portion 66, a cylindrical shape closed other end side opposite to the first fixing tubular portion 66. For this reason, the mesh body 67 covers the opening at one end of the first fixing cylinder portion 66. In other words, the strainer mesh 53 is formed in a substantially cylindrical shape having one end opened and the other end closed.

In the present embodiment, the mesh main body 67 has a dome shape as an example of a cylindrical shape. The dome shape is a cylindrical shape that tapers. The mesh body 67 is composed of a member having a plurality of small through holes formed on the whole. An example of this member is a wire mesh. The shape in which the other end is closed does not mean that the plurality of small through-holes are closed, but a shape such as a dome shape as described above.

  As shown in FIGS. 5 and 6, the holding portion 52 includes a main body portion 70 and a lid portion 90. The main body portion 70 has a cylindrical shape, and includes an insertion portion 71, a second fixing cylinder portion 76, and a male screw portion 73. A male screw part 73 is formed at one end of the main body part 70. The male threaded portion 73 includes a plurality of threaded threads 74 that are lined up.

  The insertion portion 71 is formed at the opposite end of the main body portion 70 with respect to the male screw portion 73. An insertion port 75 is formed at one end of the insertion portion 71. The strainer mesh 53 is inserted through the insertion port 75. At the end of the insertion portion 71 on the insertion port 75 side, a second fixing cylinder portion 76 that is fitted with the first fixing cylinder portion 66 and fixes the first fixing cylinder portion 66 is formed. Yes.

  7 is a cross-sectional view of an integrated body of the holding portion 52 and the strainer mesh 53 shown along the line F7-F7 shown in FIG. FIG. 7 shows a state in which the strainer mesh 53 is inserted into the holding portion 52 and fixed. As shown in FIGS. 5 to 7, the second fixing cylinder portion 76 has a cylindrical shape that is continuous around the circumference, and has a size in which the first fixing cylinder portion 66 of the strainer mesh 53 is press-fitted inside. doing.

  When the strainer mesh 53 is inserted from the insertion opening 75 of the insertion portion 71 from the mesh main body 67 side, the first fixing cylinder portion 66 is press-fitted into the second fixing cylinder portion 76. For this reason, the strainer mesh 53 is fixed by being tightly fitted to the holding portion 52.

  As shown in FIG. 7, a stepped portion 77 is formed on the inner surface of the second fixing cylinder portion 76. The stepped portion 77 is formed so that its height is lowered by one step in the radial direction of the insertion port 75. Further, the distance from the insertion port 75 to the stepped portion 77 in the second fixing cylinder portion 76 corresponds to the length of the first fixing cylinder portion 66. Further, as shown in an enlarged manner in FIG. 7, the mesh main body 67 is formed inside the outer edge of the first fixing cylinder portion 66. That is, the corner portion 68 of the first fixing cylinder portion 66 protrudes.

  For this reason, when the strainer mesh 53 is inserted into the holding portion 52, the corner portion 68 of the first fixing cylinder portion 66 abuts against the step portion 77 in the insertion direction, as shown in an enlarged range F7 in FIG. Touch. When the corner portion 68 contacts the stepped portion 77, the movement of the holding portion 52 into the insertion portion 71 is stopped. In addition, the distance from the insertion port 75 to the stepped portion 77 in the second fixing cylinder portion 76 corresponds to the length of the first fixing cylinder portion 66, so that the strainer fixed to the holding portion 52. One end of the mesh 53 and the end surface of the insertion port 75 can be flush with each other.

  As shown in FIG. 7, when the strainer mesh 53 is inserted from the insertion port 75, the inner surface of the insertion portion 71 and the mesh body 67 face each other. A through-hole portion 78 is formed in a portion of the insertion portion 71 that faces the mesh body 67. In the present embodiment, as shown in FIG. 5, four through-hole portions 78 are formed, and adjacent through-hole portions 78 are partitioned by a column portion 79. The column portions 79 are spaced apart at equal intervals in the circumferential direction, and extend in the insertion direction of the strainer mesh 53 with respect to the insertion portion 71.

  In other words, the holding portion 52 holds the second fixing cylinder portion 76 by the column portion 79 in order to expose the mesh main body 67 that collects underwater dust in the strainer mesh 53 to the outside. The range that covers is reduced.

As shown in FIG. 7, a gap S is formed between the inner surface of the insertion portion 71 and the mesh body 67. This point will be specifically described. As shown in FIG. 7, the strainer mesh 53 is inserted into the insertion portion 71, and the corner portion 68 of the first fixing cylinder portion 66 is in contact with the stepped portion 77 of the second fixing cylinder portion 76 . The portion of the inner surface of the holding portion 52 that faces the mesh body 67 of the strainer mesh 53 is the inner surface of the insertion portion 71. More specifically, the inner surface 79 a of the four pillars 79 and the end surface 80 that faces the tip of the mesh body 67. Further, the mesh main body 67 is not in contact with any part of the insertion portion 71.

  Further, as shown in FIGS. 5 and 6, the second fixing cylinder portion 76 is formed with a notch groove 81. The cutout groove 81 passes through the second fixing cylinder 76 and extends from one end on the insertion port 75 side toward the other end. FIG. 8 is a perspective view showing an operation of removing the strainer mesh 53 from the holding portion 52.

  As shown in FIG. 8, when removing the strainer mesh 53 from the holding portion 52, the first fixing cylinder portion 66 of the strainer mesh 53 is sandwiched by the tool T through the notch groove 81. Then, the strainer mesh 53 is pulled out in a state where the first fixing cylinder portion 66 is sandwiched by the tool T. An example of the tool T is radio pliers. In this manner, the strainer mesh 53 can be pulled out by sandwiching the first fixing cylinder portion 66 through the notch groove 81. Note that the tool T to be used only needs to have a size capable of holding the first fixing cylinder portion 66 through the notch groove 81. A plurality of cutout grooves 81 may be provided.

Note that the notch groove 81 is covered from the inside by the first fixing cylinder portion 66 by fitting the first fixing cylinder portion 66 into the second fixing cylinder portion 76 and tightly fitting it. Therefore, it is sealed.

  A lid 90 is provided at the end of the main body 70 of the holding part 52 opposite to the insertion part 71. The lid 90 closes the attachment hole 64 when the male thread 73 of the holding part 52 is screwed into the female thread 65 of the attachment hole 64.

  As shown in FIG. 4, a seal portion 82 is provided between the male screw portion 65 and the insertion portion 71 in the holding portion 52. In this embodiment, as an example, the seal portion 82 is formed by fitting an O-ring 84 into a groove portion 83 formed on the peripheral surface of the holding portion 52.

  The integral part of the holding part 52 and the strainer mesh 53 is inserted into the attachment hole part 64 of the pipe part 51 from the insertion part 71 side. Then, the holding portion 52 is fixed to the piping portion 51 by screwing the male screw portion 73 of the holding portion 52 into the female screw portion 65 in the attachment hole portion 64.

  As shown in FIG. 4, in a state where the holding part 52 is fixed to the pipe part 51, the strainer mesh 53 is arranged in the third flow path part 63. Further, since the opening of the second fixing cylinder portion 76 is opened in the third flow path portion 63, the opening of the first fixing cylinder portion 66 of the strainer mesh 53 is the third flow path portion. Open in 63.

  The third flow path portion 63 is formed with a stopping step portion 86 that stops the movement of the holding portion 52 when the tip of the second fixing cylinder portion 76 of the holding portion 52 hits. Further, the second fixing cylinder portion 76 and the third channel portion 63 of the holding portion 52 are configured such that the circumferential surface of the second fixing cylinder portion 76 makes one round along the circumferential direction, and the third channel portion. The inner surface of 63 is in surface contact with the inner surface.

Further, as described above, the first fixing cylinder portion 66 of the strainer mesh 53 is press-fitted into the second fixing cylinder portion 76 of the holding portion 52, and the first fixing cylinder portion 66 and the first fixing cylinder portion 66 are The second fixing cylinder portion 76 has a size such that the outer surface of the first fixing cylinder portion 66 makes a surface contact with the inner surface of the second fixing cylinder portion 76 once along the circumferential direction. For this reason, when the water flowing from the first flow path portion 61 toward the second flow path portion 62 flows into the third flow path portion 63, it flows into the inside through the opening of the strainer mesh 53.

As shown in FIG. 4, the insertion portion 71 is formed so as to be positioned at a connection portion between the third flow path portion 63 and the second flow path portion 62 . For this reason, the water that flows into the strainer mesh 53 and passes through the mesh body 67 smoothly flows into the second flow path portion 62 . The seal portion 82 is in contact with the inner surface of the boundary portion between the third flow path portion 63 and the mounting hole portion 64, and provides a liquid-tight seal between the third flow path portion 63 and the mounting hole portion 64. doing.

Next, the operation of the strainer device 50 will be described. For example, water supplied from a water supply source such as a water pipe flows from the first flow path 61 and proceeds to the third flow path 63 as shown in FIG. The water that has flowed into the third flow path portion 63 flows into the strainer mesh 53.

  This is because the second fixing cylinder part 76 is in surface contact over the entire circumferential direction of the inner surface of the third flow path part 63, and the peripheral surface of the first fixing cylinder part 66 of the strainer mesh 53 is the second surface. This is because the surface is sealed with the inner surface of the fixing cylinder portion 76 over the entire area in the circumferential direction.

  When the water that has flowed into the strainer mesh 53 passes through the mesh body 67, dust is collected in the mesh body 67. Further, as shown in FIG. 7, a gap S is formed between the inner surface of the insertion portion 71 and the mesh body 67. In other words, the mesh body 67 is not in contact with the insertion portion 71. For this reason, water can pass through any part of the mesh body 67. For example, in a structure in which a part of the mesh body 67 is supported in contact with the inner surface 79 a of the column part 79, water passes through the part of the mesh body 67 that is in contact with the inner surface 79 a of the column part 79. Can not do it.

The water in which the dust is collected through the mesh main body 67 flows into the second flow path portion 62 and is guided to the tank device 30 through the water supply port 31.

  In the hot water supply device 20 of the present embodiment, the strainer mesh 53 is detachable from the holding unit 52. When the strainer mesh 53 is clogged, it is necessary to clean the strainer mesh 53. In this embodiment, since only the strainer mesh 53 can be removed, the strainer mesh 53 can be easily cleaned.

  In addition, for example, when pebbles or the like enter the strainer mesh 53, the pebbles may break in the strainer mesh due to water flow, and may be damaged. Moreover, the roughness of the eyes calculated | required with respect to the strainer mesh 53 changes with the usage environment of the hot water supply apparatus 20 changing like household use, industrial use, and agricultural use.

  As described above, when the strainer mesh is damaged, or when it is desired to replace the strainer mesh 53 (the roughness of the eyes), the strainer mesh 53 needs to be replaced, but only the strainer mesh 53 can be removed. The strainer mesh 53 can be easily and inexpensively replaced.

  Furthermore, the strainer mesh 53 has a cylindrical shape and is fixed to the holding portion 52 by being inserted into the insertion portion 71 of the holding portion 52. As described above, the shape of the strainer mesh 53 is simplified, and the fixing structure of the strainer mesh 53 to the holding portion 52 is also simple. For this reason, the cost of the strainer apparatus 50 can be suppressed low. Further, since the strainer mesh 53 can be fixed to the holding portion 52 simply by inserting the strainer mesh 53 into the holding portion 52, the attaching operation of the strainer mesh 53 can be simplified.

  In addition, the holding part 52 and the strainer mesh 53 are such that the mesh body 67 does not contact any part of the inner surface of the insertion part 71 when the strainer mesh 53 is fixed to the holding part 52. For this reason, since the entire surface of the mesh main body 67 can be used for collecting dust, the life of the strainer device 50 can be extended.

  Further, by forming the notch groove 81 in the second fixing cylinder portion 76 of the holding portion 52, the strainer mesh 53 can be removed from the holding portion 52 by using a tool T such as radio pliers, for example.

The posture of the strainer mesh 53 when the holding portion 52 is fixed in the piping portion 51 is the direction in which the third flow passage portion 63 extends , that is, the direction in which water flows , from the opening toward the downstream . For this reason, since water flows into the strainer mesh 53 through the opening of the strainer mesh 53, the dust collected by the mesh main body 67 is restrained from being accumulated in the mesh main body 67 and coming out of the opening by the flow of water. It is held in the mesh body 67. Further, since the mounting direction of the strainer mesh 53 with respect to the holding portion 52 , in other words, the insertion direction is the same as the direction in which water flows, the strainer mesh 53 comes off from the holding portion 52, or the strainer mesh 53 with respect to the holding portion 52. Is prevented from loosening.

  Next, a hot water supply apparatus according to the second embodiment will be described with reference to FIGS. In addition, the structure which has the same function as 1st Embodiment attaches | subjects the code | symbol same as 1st Embodiment, and abbreviate | omits description. In the present embodiment, the shape of the holding portion 52 is different from that of the first embodiment. Other structures are the same as those in the first embodiment. The different points will be specifically described.

  FIG. 9 is a perspective view showing the holding portion 52 of the present embodiment. In the present embodiment, a through groove 87 is formed in the male screw portion 73. The through groove 87 is formed in the direction in which the plurality of screw threads 74 of the male screw portion 73 are arranged, and penetrates all the screw threads 74.

  FIG. 10 shows a state where the holding portion 52 is being removed from the attachment hole portion 64 of the piping portion 51 and cut along a plane passing through the center line of the third flow path portion 63. As shown in FIG. 10, in the present embodiment, the insertion portion 71 of the holding portion 52 is formed to be one step lower in the radial direction than the male screw portion 73. A portion between the insertion portion 71 and the seal portion 82 is inclined with respect to the extending direction of the main body portion 70 and an inclined surface 85 that is inclined with respect to the moving direction of the holding portion 52 when the holding portion 52 is removed from the piping portion 51. It has become. In FIG. 10, the strainer mesh 53 is not cut.

  As shown in FIG. 10, when the holding portion 52 moves outward in the mounting hole 64 in order to remove the holding portion 52 from the mounting hole 64, the inclined surface 85 is inclined with respect to the moving direction of the holding portion 52. Therefore, the gap between the inner surface of the third flow path portion 63 and the inclined surface 85 is increased.

  When the holding portion 52 has the inclined surface 85 and the through-groove 87 is formed in the male screw portion 73, when the holding portion 52 is in the middle of being removed from the mounting hole 64, the range F10 in FIG. As shown, the through groove 87 communicates with the third flow path portion 63 and communicates with the outside of the piping portion 51. A range F10 indicates the vicinity of the through groove 87.

  In the present embodiment, in addition to the effects of the first embodiment, the safety of the work of removing the holding portion 52 from the piping portion 51 can be further improved. This point will be specifically described. When removing the holding | maintenance part 52 from the piping part 51, while stopping operation | movement of the hot water supply apparatus 20, supply of the water with respect to the tank apparatus 30 from a water supply source is stopped.

  However, the piping part 51 may be filled with water. In this case, the pressure in the piping part 51 may be higher than the external pressure. Even in such a case, when the holding part 52 is rotated with respect to the pipe part 51 so as to remove the holding part 52, the pressure in the third flow path part 63 escapes to the outside through the through groove 87. 52 can be safely removed.

Moreover, when the pressure in the piping part 51 is high, the holding | maintenance part 52 is urged | biased outside by the pressure in the piping part 51. FIG. This biasing force tends to increase the frictional force between the male threaded portion 73 and the female threaded portion 65 , but the pressure in the flow path 54 is changed from the external atmospheric pressure by the pressure in the flow path 54 escaping to the outside. Since it becomes the same, the frictional force between the external thread part 73 and the internal thread part 65 can be made small. As a result, the holding part 52 is easily rotated with respect to the pipe part 51, so that the holding part 52 is easily detached from the pipe part 51.

  According to these embodiments, it is possible to provide a strainer apparatus that can keep the cost low.

Further, in the present embodiment, the through groove 87 is formed over all the screw threads 74 of the male screw portion 73. For this reason, since the length of the through groove 87 becomes long, when the holding portion 52 is rotated to remove the holding portion 52 from the piping portion 51, the through groove 87 communicates with the outside at an early stage. For this reason, it becomes easy to remove the holding part 52.

  In the present embodiment, the through groove 87 is formed over all the screw threads 74. As another example, it may be formed over some, but not all, threads 74. In short, when there are a plurality of threads, the same effect can be obtained by forming the through groove 87 in at least one of the plurality of threads. In the present embodiment, one through groove 87 is formed, but a plurality of through grooves 87 may be provided, for example.

  In the present embodiment, the through groove 87 is provided in the male screw portion 73. As another example, the through groove may be provided in the female screw portion 65. When a through groove is formed in the female screw portion 65, the through groove penetrates the screw thread 66 along the direction in which the screw threads 66 are arranged, similarly to the through groove 87 formed in the male screw portion 73. In this case, the through groove may be formed so as to penetrate all of the threads 66 or may penetrate one thread 66. Further, a plurality of through grooves formed in the female screw portion 65 may be formed. Alternatively, through grooves may be formed in both the male screw portion 73 and the female screw portion 65.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 20 ... Hot-water supply apparatus, 31 ... Water supply port, 50 ... Strainer apparatus, 51 ... Piping part, 52 ... Holding part, 53 ... Strainer mesh, 54 ... Flow path, 66 ... First fixing cylinder part, 67 ... Mesh main body, 71 ... Insertion part, 76 ... Second fixing cylinder part , 79 ... Column part , 81 ... Notch groove .

Claims (5)

The first fixing cylinder part that protrudes from the first fixing cylinder part so as to cover the opening of one end of the first fixing cylinder part and the first fixing cylinder part having both ends opened. A strainer mesh having a cylindrical mesh body with the other end on the opposite side closed ,
A piping section having a flow path through which fluid flows;
Removably fixed to the piping part, and holding the strainer mesh in the flow path,
The holding part is
The strainer mesh is inserted from the other end side of the mesh body, and has a plurality of pillar portions arranged at intervals in the circumferential direction of the mesh body, and the mesh is passed between the neighboring pillar portions. An insertion portion whose body is exposed in the flow path ;
The second fixing cylinder portion of the strainer mesh inserted into the insertion portion is detachably press-fitted, and is located on the upstream side of the flow path with respect to the other end of the mesh body closed. A fixing cylinder portion, and
The second fixing cylinder part has a notch groove opened on an outer surface and an inner surface thereof, and the first fixing cylinder part press-fitted inside the second fixing cylinder part through the notch groove. Strainer device with the outer surface of partially exposed .   The strainer device according to claim 1, wherein the insertion portion has a plurality of through-hole portions facing the strainer mesh, and the through-hole portions are formed between the adjacent column portions. The strainer device according to claim 1, wherein the holding unit is installed in the flow path such that an insertion direction of the strainer mesh with respect to the holding unit is the same as a flow direction of the fluid in the flow path . The piping portion includes an attachment hole portion in which an internal thread portion having a plurality of screw threads on the inner surface is formed and communicates the flow path and the outside.
The holding portion includes a main body portion formed with a male screw portion having a plurality of screw threads that are inserted into the attachment hole portion and screwed into the female screw portion on a peripheral surface thereof.
The insertion portion and the second fixing cylinder portion are provided in the main body portion,
2. The strainer device according to claim 1, wherein a through groove that penetrates in a direction in which the plurality of screw threads are arranged is formed in at least one of the male screw part and the female screw part . A water inlet through which water passes,
The strainer device according to any one of claims 1 to 4, wherein the strainer device is provided in the water supply port, and the flow path communicates with the water supply port.
Hot water supply device equipped with.

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