JP2020070639A - Hot water storage tank, hot water storage heat exchanger, and sanitary washing device - Google Patents

Abstract

To provide a hot water storage tank capable of obtaining appropriate strength without affecting the amount of hot water storage and convection of hot water, and suppressing the hindrance to compactness, and a hot water storage heat exchanger, and a sanitary washing device.SOLUTION: A hot water storage tank 100 having a space for storing hot water inside, includes: a tank body 110 that has a first housing 120 and a second housing 122 to be joined with the first housing, and forms a space by joining the first housing and the second housing; and a flange portion 112 protruding outward that is formed in the joint portion between the first housing and the second housing of the tank body. The flange portion has a bent portion 130 bent toward the first housing side or the second housing side.SELECTED DRAWING: Figure 3

Description

  Aspects of the present invention generally relate to hot water storage tanks, hot water storage heat exchangers, and sanitary washing devices.

  In recent years, sanitary washing devices have tended to be emphasized not only in their performance but also in designability, and therefore there is a tendency for downsizing. On the other hand, a tank for storing hot water for cleaning, which occupies a large volume in a hot water storage type sanitary washing device, is required to have a hot water storage amount for securing a hot water duration and a strength against water pressure. Therefore, although a reinforcing shape is added to the tank, if such a reinforcing shape is provided, interference with other parts is likely to occur, which may hinder downsizing.

  Specifically, if a reinforcing shape is added to the hot water storage tank in order to secure the strength of the hot water storage tank, the hot water storage tank becomes large. Further, the flange formed at the joint between the upper casing and the lower casing of the hot water storage tank needs to be arranged so as not to contact other parts. There is a possibility that the size will increase.

  As a solution to this problem, providing a reinforcing rib inside the hot water storage tank can be considered (for example, Patent Document 1). However, when the reinforcing ribs are provided inside the hot water storage tank, the amount of hot water stored corresponding to the volume of the reinforcing ribs is lost, and the reinforcing ribs may affect the convection of hot water in the hot water storage tank.

  Therefore, a hot water storage tank, a hot water storage heat exchanger using this hot water storage tank, and a sanitary washing device using this hot water storage heat exchanger can obtain appropriate strength without affecting the hot water storage amount or the convection of hot water. Therefore, it is desired to be able to suppress the hindrance to compactness.

Patent No. 4899702

  The present invention has been made on the basis of the recognition of the above-mentioned problems, and it is possible to obtain appropriate strength without affecting the amount of hot water stored and the convection of hot water, and it is possible to suppress the hindrance of compactness. An object is to provide a tank, a hot water storage heat exchanger, and a sanitary washing device.

  A first aspect of the present invention is a hot water storage tank having a space for storing hot water therein, including a first housing and a second housing joined to the first housing. Is provided at a joint portion between the tank body that forms the space by joining the first casing and the second casing to each other, and projects outwardly. And a flange portion, wherein the flange portion has a bent portion that bends toward the first casing side or the second casing side.

  According to this hot water storage tank, by providing the bent portion in the flange portion, the strength of the tank body against water pressure can be increased as compared with the case where the flange portion is provided in a planar shape. As a result, it is possible to eliminate the need to add a reinforcing shape such as a rib other than the flange portion to the tank body. Therefore, when the hot water storage tank is incorporated into a sanitary washing device or the like, it is possible to prevent the reinforcing shape from hindering downsizing of the device incorporating the hot water storage tank. Further, by providing the bent portion on the flange portion, it is possible to suppress interference between the flange portion and other components as compared with the case where the flange portion is provided in a flat shape. Furthermore, the reinforcing ribs provided inside the hot water storage tank can prevent the amount of hot water stored from being lost or affecting the convection of hot water in the hot water storage tank. Therefore, it is possible to provide a hot water storage tank that can obtain an appropriate strength without affecting the hot water storage amount or the convection of hot water, and that can prevent the hindrance of compactness.

  In a second aspect based on the first aspect, the flange portion includes a first portion extending in a second direction orthogonal to a first direction in which the first casing and the second casing are arranged, and the first portion. And a second portion extending in the second direction on a plane different from the portion and parallel to the first portion.

  According to this hot water storage tank, the strength of the tank body against water pressure can be further increased by providing the first portion and the second portion on the flange portion. Further, for example, when a force in the shearing direction is applied to the first casing and the second casing, the force in the shearing direction is a portion that extends in the up-down direction between the first portion and the second portion. Therefore, the strength against the force in the shearing direction can be improved.

  In a third aspect based on the first or second aspect, the tank body has a plurality of side surface portions, and the flange portion has at least two of the bent portions provided on one side surface portion. This is a hot water storage tank.

  According to this hot water storage tank, by providing the bent portions in a concentrated manner on the side surface portion requiring strength, it is possible to further increase the strength of the hot water storage tank with respect to the water pressure.

  A fourth aspect of the invention is the fuel cell system according to any one of the first to third aspects of the invention, wherein the tank body is inward in a second direction orthogonal to a first direction in which the first casing and the second casing are arranged. The hot water storage tank is characterized in that it has a recessed portion which is recessed toward the front side, and the bent portion is provided in the recessed portion.

  According to this hot water storage tank, by providing the curved portion in the concave portion, it is possible to arrange the other component in the concave portion and suppress interference with the other component by the curved portion, thereby efficiently arranging the other component. It can be done easily. It is possible to more reliably suppress the hindrance of making the device incorporating the hot water storage tank compact.

  A fifth aspect of the present invention is a hot water storage heat exchanger comprising the hot water storage tank according to any one of the first to fourth aspects of the invention and a heater for heating water in the hot water storage tank.

  According to this hot water storage heat exchanger, it is possible to obtain an appropriate strength without affecting the amount of hot water stored and the convection of hot water, and to provide a hot water storage heat exchanger that can be prevented from hindering compactness. be able to.

  A sixth invention is a sanitary washing device comprising the hot water storage heat exchanger of the fifth invention and a casing for housing the hot water storage heat exchanger.

  According to this sanitary washing device, it is possible to provide a sanitary washing device that can obtain appropriate strength without affecting the amount of hot water stored and the convection of hot water, and that can prevent the hindrance of compactness.

  According to the aspect of the present invention, a hot water storage tank, a hot water storage heat exchanger, and a hot water storage heat exchanger capable of obtaining an appropriate strength without affecting the hot water storage amount or the convection of hot water and suppressing the hindrance of compactness, A sanitary washing device is provided.

It is a perspective view showing typically a toilet device provided with a sanitary washing device concerning an embodiment. It is a block diagram showing typically the important section composition of the sanitary washing device concerning an embodiment. Drawing 3 (a) and Drawing 3 (b) are perspective views showing the hot water storage type heat exchanger concerning an embodiment typically. FIG. 4A and FIG. 4B are a plan view and a bottom view schematically showing the hot water storage heat exchanger according to the embodiment. 5 (a) and 5 (b) are a front view and a rear view schematically showing the hot water storage heat exchanger according to the embodiment. It is a sectional view showing typically the hot water storage type heat exchanger concerning an embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same components are designated by the same reference numerals, and detailed description thereof will be appropriately omitted.
FIG. 1 is a perspective view schematically showing a toilet device including a sanitary washing device according to an embodiment.
As shown in FIG. 1, the toilet device 2 includes a Western-style seating toilet (hereinafter simply referred to as “toilet” for convenience of description) 4 and a sanitary washing device 10 provided thereon. The sanitary washing device 10 includes a casing 12, a toilet seat 14, and a toilet lid 16. The toilet seat 14 and the toilet lid 16 are rotatably supported by the casing 12 so as to be openable and closable.

  In the following description of the embodiments, “upward”, “downward”, “forward”, “rearward”, “rightward”, and “leftward” are used, but these directions are as shown in FIG. 1. This is the direction viewed from the user sitting on the toilet seat 14.

  Inside the casing 12, a body washing function unit and the like that realizes washing of the “butt” of the user sitting on the toilet seat 14 is built in. Further, for example, the casing 12 is provided with a seating detection sensor 20 (see FIG. 2) that detects that the user is sitting on the toilet seat 14. When the seating detection sensor 20 detects a user sitting on the toilet seat 14, when the user operates the operation unit 6 such as a remote controller, a cleaning nozzle (simply referred to as a “nozzle” hereinafter) 22 Can be advanced into the bowl 4a of the toilet bowl 4. In the sanitary washing device 10 shown in FIG. 1, the nozzle 22 has advanced into the bowl 4a.

  The nozzle 22 discharges water toward the human body part to wash the human body part. A bidet washing water outlet 22a and a buttocks washing water outlet 22b are provided at the tip of the nozzle 22. The nozzle 22 can inject water from a bidet cleaning spout 22a provided at the tip of the nozzle 22 to clean a female part of a woman sitting on the toilet seat 14. Alternatively, the nozzle 22 can wash the "butt" of the user sitting on the toilet seat 14 by injecting water from the buttocks wash spout 22b provided at the tip of the nozzle 22. In addition, in this specification, the term “water” includes not only cold water but also heated hot water.

  The modes for cleaning the "butt" include, for example, "bottom cleaning" and "soft cleaning" in which water is gently washed with a water stream softer than "butt cleaning". The nozzle 22 can execute, for example, "bidet washing", "butt washing", and "soft washing".

  In the nozzle 22 shown in FIG. 1, the bidet washing / spouting port 22a is provided closer to the tip side of the nozzle 22 than the buttocks washing / spouting port 22b. Is not limited to this. The bidet washing / spouting port 22a may be provided on the rear end side of the nozzle 22 with respect to the bottom washing / spouting port 22b. Further, although the nozzle 22 shown in FIG. 1 is provided with two water outlets, three or more water outlets may be provided.

FIG. 2 is a block diagram schematically showing the main configuration of the sanitary washing device according to the embodiment. FIG. 2 also shows the main configuration of the water channel system and the electrical system.
As shown in FIG. 2, the sanitary washing device 10 has a water guiding section 30. The water conduit 30 has a conduit 30 a extending from a water supply source WS such as a water supply or a water storage tank to the nozzle 22. The water guide unit 30 guides the water supplied from the water supply source WS to the nozzle 22 through the conduit 30a. The conduit 30a is formed by, for example, each part such as a solenoid valve 32, a hot water storage heat exchanger 40, and a flow path switching part 52 described below, and a plurality of pipes connecting these parts.

  An electromagnetic valve 32 is provided on the upstream side of the water conduit 30. The solenoid valve 32 is a solenoid valve that can be opened and closed, and controls the supply of water based on a command from the control unit 24 provided inside the casing 12. In other words, the solenoid valve 32 opens and closes the conduit 30a. By opening the solenoid valve 32, the water supplied from the water supply source WS flows into the conduit 30a.

  A pressure regulating valve 34 is provided downstream of the solenoid valve 32. The pressure regulating valve 34 regulates the pressure in the pipeline 30a to a predetermined pressure range when the water supply pressure is high. A check valve 36 is provided downstream of the pressure regulating valve 34. The check valve 36 suppresses the reverse flow of water to the upstream side of the check valve 36 when the pressure in the conduit 30a decreases.

  A hot water storage heat exchanger 40 is provided downstream of the check valve 36. The hot water storage heat exchanger 40 has a hot water storage tank and a heater, stores the water supplied from the water supply source WS in the hot water storage tank, and heats the water in the hot water storage tank by the heater to raise the temperature to a prescribed temperature, for example. Warm. That is, the hot water storage heat exchanger 40 produces hot water. The hot water storage heat exchanger 40 is housed in the casing 12. In other words, the casing 12 houses the hot water storage heat exchanger 40.

  The hot water storage heat exchanger 40 is connected to the control unit 24. The control unit 24 controls the hot water storage heat exchanger 40 according to the operation of the operation unit 6 by the user, for example, to raise the temperature of the water to the temperature set by the operation unit 6.

  An electrolytic cell unit 44 is provided downstream of the hot water storage heat exchanger 40. The electrolytic cell unit 44 produces a liquid (functional water) containing hypochlorous acid from the tap water by electrolyzing the tap water flowing inside. The electrolytic cell unit 44 is connected to the control unit 24. The electrolytic cell unit 44 generates functional water under the control of the control unit 24.

  The functional water generated in the electrolytic cell unit 44 may be, for example, a solution containing metal ions such as silver ions and copper ions. Alternatively, the functional water generated in the electrolytic cell unit 44 may be a solution containing electrolytic chlorine, ozone, or the like. Alternatively, the functional water generated in the electrolytic cell unit 44 may be acidic water or alkaline water.

  A vacuum breaker (VB) 46 is provided downstream of the electrolytic cell unit 44. The vacuum breaker 46 has, for example, a flow path for flowing water, an intake port for taking in air into the flow path, and a valve mechanism for opening and closing the intake port. The valve mechanism closes the intake port, for example, when water is flowing through the flow path, and opens the intake port when the flow of water is stopped to take in air into the flow path. That is, the vacuum breaker 46 takes in air into the conduit 30a when there is no flow of water in the water conduit 30. For the valve mechanism, for example, a float valve is used.

  The vacuum breaker 46 takes in air into the conduit 30a as described above, thereby promoting drainage of a portion of the conduit 30a downstream of the vacuum breaker 46, for example. The vacuum breaker 46 promotes drainage of the nozzle 22, for example.

  A flow rate adjusting unit 50 is provided downstream of the vacuum breaker 46. The flow rate adjusting unit 50 adjusts the water force (flow rate). A flow path switching unit 52 is provided downstream of the flow rate adjusting unit 50. The flow path switching unit 52 opens and closes and switches the water supply to the nozzle 22 and the nozzle cleaning chamber 54. The flow rate adjusting unit 50 and the flow path switching unit 52 may be provided as one unit. The flow rate adjusting unit 50 and the flow path switching unit 52 are connected to the control unit 24. The operations of the flow rate adjusting unit 50 and the flow path switching unit 52 are controlled by the control unit 24. The flow rate adjusting unit 50 and the flow path switching unit 52 may be integrated.

  The nozzle 22, the nozzle cleaning chamber 54, and the spray nozzle 56 are provided downstream of the flow path switching unit 52. The nozzle 22 receives the driving force from the nozzle motor 58 and moves into or out of the bowl 4 a of the toilet bowl 4. That is, the nozzle motor 58 moves the nozzle 22 back and forth based on a command from the control unit 24.

  The nozzle cleaning chamber 54 cleans the outer peripheral surface (body) of the nozzle 22 by spraying functional water or water from a water discharge portion provided inside. The spray nozzle 56 makes cleaning water and functional water into a mist and sprays them onto the bowl 4a. In this example, a spray nozzle 56 is provided separately from the nozzle 22 for cleaning the human body. The present invention is not limited to this, and the nozzle 22 may be provided with a spout for spraying the mist-like liquid onto the bowl 4a.

  Further, a posterior washing flow passage 61, a soft washing flow passage 62, and a bidet washing flow passage 63 are provided downstream of the flow passage switching unit 52. The bottom washing flow path 61 and the soft washing flow path 62 guide the water supplied from the water supply source WS via the water guiding unit 30 and the functional water generated in the electrolytic cell unit 44 to the bottom washing water discharge port 22b. The bidet cleaning flow passage 63 guides the water supplied from the water supply source WS via the water guiding part 30 and the functional water generated in the electrolytic cell unit 44 to the bidet cleaning spout 22a.

  Further, a surface cleaning flow channel 64 and a spraying flow channel 65 are provided downstream of the flow channel switching unit 52. The surface cleaning flow path 64 guides water supplied from the water supply source WS via the water guiding part 30 and functional water generated in the electrolytic cell unit 44 to the water discharge part of the nozzle cleaning chamber 54. The spray passage 65 guides the water supplied from the water supply source WS via the water conduit 30 or the functional water generated in the electrolytic cell unit 44 to the spray nozzle 56.

  The control section 24 controls the flow path switching section 52 to control each of the posterior cleaning flow path 61, the soft cleaning flow path 62, the bidet cleaning flow path 63, the surface cleaning flow path 64, and the spray flow path 65. Switch between open and close. In this way, the flow path switching unit 52 is in a state in which the bidet cleaning spout 22a, the buttocks cleaning spout 22b, the nozzle cleaning chamber 54, and the plurality of spouts such as the spray nozzle 56 are in communication with the conduit 30a. And a state in which the pipe 30a is not communicated.

  The control unit 24 is supplied with power from the power supply circuit 70, and based on signals from the human body detection sensor 72, the seating detection sensor 20, the operation unit 6, etc., the solenoid valve 32, the hot water storage heat exchanger 40, The operation of the electrolytic cell unit 44, the flow rate adjusting unit 50, the flow path switching unit 52, the nozzle motor 58, etc. is controlled.

  The human body detection sensor 72 is provided in the casing 12 and detects a user (human body) approaching the toilet seat 14. The human body detection sensor 72 is configured to be able to detect the presence of the user even when the toilet lid 16 is closed. The control unit 24 automatically opens the toilet lid 16 in response to the detection of the user by the human body detection sensor 72, for example.

  In addition, the casing 12 has various types such as a "warm air drying function" for blowing hot air toward the "buttock" of the user sitting on the toilet seat 14 to dry it, a "deodorizing unit", and an "indoor heating unit". A mechanism may be appropriately provided. At this time, the side surface of the casing 12 is appropriately provided with an exhaust port from the deodorizing unit and an exhaust port from the indoor heating unit. However, the sanitary washing device 10 may have at least a sanitary washing function unit.

Drawing 3 (a) and Drawing 3 (b) are perspective views showing the hot water storage type heat exchanger concerning an embodiment typically.
FIG. 4A and FIG. 4B are a plan view and a bottom view schematically showing the hot water storage heat exchanger according to the embodiment.
5 (a) and 5 (b) are a front view and a rear view schematically showing the hot water storage heat exchanger according to the embodiment.
FIG. 6 is a cross-sectional view schematically showing the hot water storage heat exchanger according to the embodiment.
FIG. 3A is a perspective view of the hot water storage heat exchanger 40 as seen obliquely from the front, and FIG. 3B is a perspective view of the hot water storage heat exchanger 40 as seen from the oblique rear. FIG. 6 schematically shows a cross section taken along line A1-A2 of FIG.

  As shown in FIGS. 3 (a), 3 (b), 4 (a), 4 (b), 5 (a), 5 (b), and 6, hot water storage heat exchangers 40 includes a hot water storage tank 100 and a heater 102. The hot water storage tank 100 has a space SP for storing hot water therein. The heater 102 is provided in the space SP of the hot water storage tank 100 and heats the water in the hot water storage tank 100.

  The hot water storage tank 100 includes a tank body 110 and a flange portion 112. The tank body 110 has a lower housing 120 (first housing) and an upper housing 122 (second housing). The upper housing 122 is joined to the lower housing 120. The upper housing 122 is provided on the lower housing 120. The tank main body 110 forms a space SP for storing hot water by joining the lower housing 120 and the upper housing 122. The lower housing 120 has, for example, an opening box shape that opens upward. The upper housing 122 has, for example, an opening box shape that opens downward. The opening shape of the upper housing 122 is substantially the same as the opening shape of the lower housing 120. Thereby, the space SP can be formed by joining the lower housing 120 and the upper housing 122. However, the lower housing 120 and the upper housing 122 may have any shape capable of forming the space SP. The upper housing 122 or the lower housing 120 may be a combination of a plurality of divided members.

  The hot water storage heat exchanger 40 is housed in the casing 12 with the upper casing 122 of the hot water storage tank 100 facing upward, for example. However, the arrangement of the hot water storage heat exchanger 40 is not limited to this. The hot water storage heat exchanger 40 may be housed in the casing 12 with the lower casing 120 and the upper casing 122 of the hot water storage tank 100 oriented in the left-right direction, for example. The hot water storage heat exchanger 40 may be housed in the casing 12 with the lower housing 120 and the upper housing 122 facing in either direction. In other words, the tank body 110 may have a first housing and a second housing that are joined to each other in the left-right direction and the like. In the following description, the first housing is the lower housing 120 and the second housing is the upper housing 122.

  The flange portion 112 is provided at the joint between the lower casing 120 and the upper casing 122 of the tank body 110, and projects outward. The flange portion 112 is provided in an annular shape, for example, along the joint between the lower casing 120 and the upper casing 122.

  The flange portion 112 is, for example, a lower flange portion 124 (first flange portion) provided at the opening end (upper end) of the lower housing 120 and an upper flange provided at the opening end (lower end) of the upper housing 122. And a portion 126 (second flange portion). The lower flange portion 124 projects outward from the open end of the lower housing 120. The upper flange portion 126 projects outward from the opening end of the upper housing 122, faces the lower flange portion 124, and is joined to the lower flange portion 124.

  Thus, the flange portion 112 is formed by joining the lower flange portion 124 and the upper flange portion 126, for example. However, the flange portion 112 is not limited to this, and may be provided only in the lower housing 120 or only in the upper housing 122. The shape of the flange portion 112 may be any shape that protrudes outward at the joint between the lower housing 120 and the upper housing 122 and can appropriately join the lower housing 120 and the upper housing 122. .. The lower flange portion 124 and the upper flange portion 126 are portions protruding from the outer surface of the tank body 110.

  The lower casing 120 and the upper casing 122 of the hot water storage tank 100 are joined by, for example, vibration welding. However, the manufacturing method of hot water storage tank 100 is not limited to the above, and any manufacturing method capable of appropriately joining lower housing 120 and upper housing 122 may be used.

  The flange portion 112 has a bending portion 130 that bends toward the lower housing 120 side or the upper housing 122 side. In other words, the flange portion 112 has the bent portion 130 that bends upward or downward. In this example, the flange 112 has four bends 130. However, the number of bending portions 130 is not limited to four, and may be any number.

  The flange portion 112 has a first portion 131 extending in a second direction orthogonal to the first direction in which the lower casing 120 and the upper casing 122 are arranged, and a plane different from the first portion 131 and a first portion 131. A second portion 132 extending in the second direction in a parallel plane. In other words, the second portion 132 extends in the second direction closer to the upper housing 122 than the first portion 131. In this example, the first direction is the vertical direction and the second direction is the horizontal direction. However, the first direction may be any direction in which the lower housing 120 (first housing) and the upper housing 122 (second housing) are lined up. The second direction may be any direction orthogonal to the first direction. The flange portion 112 further includes, for example, a third portion 133 and a fourth portion 134. The third portion 133 extends in the vertical direction (first direction) and connects one end of the first portion 131 and one end of the second portion 132. The fourth portion 134 extends in the vertical direction and connects the other end of the first portion 131 and the other end of the second portion 132.

  Thus, the two bent portions 130 are provided at both ends of the first portion 131, and the other two bent portions 130 are provided at both ends of the second portion 132. In other words, the bent portion 130 includes the joint portion between the first portion 131 and the third portion 133, the joint portion between the second portion 132 and the third portion 133, and the joint portion between the first portion 131 and the fourth portion 134. , And the joint between the second portion 132 and the fourth portion 134, respectively.

  In addition, the extending direction of the first portion 131 and the second portion 132 is not limited to being completely horizontal, and may be at least a component extending in the horizontal direction. The extending direction of the first portion 131 and the second portion 132 may be inclined with respect to perfect horizontal.

  The first portion 131 and the second portion 132, for example, extend linearly in a side view. The extending direction of the second portion 132 is substantially the same as the extending direction of the first portion 131. In other words, the second portion 132 is substantially parallel to the first portion 131 when seen from the side. However, the extending direction of the second portion 132 may be different from the extending direction of the first portion 131. Further, the first portion 131 and the second portion 132 are not limited to being linear in a side view, and may be curved and extend in, for example, an arc shape or a wave shape.

  The third part 133 and the fourth part 134 are similar to the first part 131 and the second part 132. The extending direction of the third portion 133 and the fourth portion 134 is not limited to the complete up and down direction, and may be any component that extends at least in the up and down direction.

  The tank body 110 has a plurality of side surface portions 141 to 146. Each of the side surface portions 141 to 146 is, for example, a portion that forms an outer edge of the tank body 110 in a top view. In this example, the tank body 110 has six side surface portions 141 to 146. However, the number of side surface portions 141 to 146 is not limited to six and may be any number.

  The second portion 132 of the flange portion 112 is provided on the side surface portions 141 and 142. On the other hand, the first portion 131 of the flange portion 112 is provided on the other side surface portions 143 to 146. The third portion 133 is provided on the side surface portion 143, and the fourth portion 134 is provided on the side surface portion 141. Therefore, the bent portions 130 at both ends of the third portion 133 are provided on one side surface portion 143. The bent portions 130 at both ends of the fourth portion 134 are provided on the other side surface portion 141.

  As described above, the flange portion 112 has the two bent portions 130 provided on the one side surface portion 141. Further, the flange portion 112 has another two bent portions 130 provided on the other one side surface portion 143.

  The tank body 110 has a recess 150 that is recessed inward in a second direction orthogonal to the first direction in which the lower housing 120 and the upper housing 122 are arranged. In other words, the tank main body 110 has the recess 150 that is recessed from the side toward the inside. The concave portion 150 is formed by, for example, two side surface portions 141 and 142 that are adjacent to each other so as to have a concave shape. Therefore, it can be said that the two bent portions 130 provided on the side surface portion 141 are provided in the recess 150.

  The configuration of the recess 150 is not limited to the configuration formed by the two adjacent side surface portions 141 and 142, and may be, for example, a configuration curved in an arc shape. The configuration of the recess 150 may be any configuration that is recessed from the side of the tank body 110 toward the inside.

  As described above, according to the hot water storage tank 100, the hot water storage heat exchanger 40, and the sanitary washing device 10 according to the present embodiment, by providing the bent portion 130 on the flange portion 112 of the hot water storage tank 100, the planar shape is obtained. The strength of the tank body 110 against water pressure can be increased as compared with the case where the flange portion 112 is provided in the. As a result, it is possible to eliminate the need to add a reinforcing shape such as a rib other than the flange 112 to the tank body 110. The tank body 110 can be made to have appropriate strength against water pressure without adding a reinforcing shape to the tank body 110. Therefore, when the hot water storage tank 100 is incorporated into the sanitary washing device 10 or the like, it is possible to prevent the reinforcing shape from hindering downsizing of the device incorporating the hot water storage tank 100. Further, by providing the bent portion 130 to the flange portion 112, the bent portion 130 is provided so that the flange portion 112 avoids other parts, as compared with the case where the flange portion 112 is provided in a planar shape. Interference between the part 112 and other parts can also be suppressed. Further, other parts and the like can be stored in the storage space formed by providing the bending portion 130. Further, the reinforcing ribs provided inside the hot water storage tank 100 can prevent the amount of hot water stored from being lost or affecting the convection of hot water in the hot water storage tank 100. Therefore, it is possible to provide the hot water storage tank 100 capable of obtaining an appropriate strength without affecting the hot water storage amount or the convection of hot water and suppressing the hindrance to the compactness.

  Further, in hot water storage tank 100, by providing first portion 131 and second portion 132 on flange portion 112, the strength of tank body 110 against water pressure can be further increased. In addition, for example, when a force in a shearing direction that is opposite to the left and right is applied to the lower housing 120 and the upper housing 122, a third portion extending in the up-down direction between the first portion 131 and the second portion 132. The portion 133 and the fourth portion 134 can receive the force in the shearing direction, and the strength of the tank body 110 against the force in the shearing direction can be improved.

  Further, in hot water storage tank 100, by providing bent portions 130 concentrated on the side surface portions 141 to 143 that require strength, the strength of hot water storage tank 100 with respect to the water pressure can be further increased. Note that the number of bending portions 130 provided on one side surface portion is not limited to two, and may be three or more. It is more preferable that the flange portion 112 has at least two bent portions 130 provided on one side surface portion.

  Further, in hot water storage tank 100, by providing curved portion 130 in concave portion 150, it is possible to suppress interference with other components while arranging other components in concave portion 150, and thus the other portions can be suppressed. Can be arranged efficiently and easily. It is possible to more reliably prevent the obstruction of downsizing of the sanitary washing device 10 incorporating the hot water storage tank 100.

The embodiments of the present invention have been described above. However, the present invention is not limited to these descriptions. A person skilled in the art appropriately modified the above-described embodiment is also included in the scope of the present invention as long as it has the features of the present invention. For example, the shape, size, material, arrangement, etc. of each element included in the sanitary washing device 10, the hot-water storage heat exchanger 40, the hot-water storage tank 100, and the like are not limited to those illustrated and can be appropriately changed. .
Further, the respective elements included in the above-described embodiment can be combined as long as technically possible, and a combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

  2 toilet devices, 4 toilets, 6 operation parts, 10 sanitary washing devices, 12 casings, 14 toilet seats, 16 toilet lids, 20 seating detection sensors, 22 nozzles, 24 control parts, 30 water guiding parts, 32 solenoid valves, 34 pressure regulating valves, 36 check valve, 40 hot water storage heat exchanger, 44 electrolytic cell unit, 46 vacuum breaker, 50 flow rate adjusting unit, 52 flow path switching unit, 54 nozzle cleaning chamber, 56 spray nozzle, 58 nozzle motor, 61 cleaning flow channel, 62 cleaning flow channel, 63 bidet cleaning flow channel, 64 surface cleaning flow channel, 65 spraying flow channel, 70 power supply circuit, 72 human body detection sensor, 100 hot water storage tank, 102 heater, 110 tank body, 112 flange section, 120 lower casing Body, 122 upper housing, 124 lower flange portion, 126 upper flange portion, 130 bend Part, 131 1st part, 132 2nd part, 133 3rd part, 134 4th part, 141-146 side surface part, 150 recessed part, SP space

Claims (6)

A hot water storage tank having a space for storing hot water inside,
A tank main body having a first housing and a second housing joined to the first housing, and forming the space by joining the first housing and the second housing; ,
A flange portion that is provided at a joint portion between the first housing and the second housing of the tank body, and that projects outwardly;
Equipped with
The hot water storage tank, wherein the flange portion has a bent portion that bends toward the first casing side or the second casing side.   The flange portion is a plane different from a first portion extending in a second direction orthogonal to the first direction in which the first casing and the second casing are arranged, and a plane different from the first portion. The hot water storage tank according to claim 1, further comprising: a second portion extending in the second direction on a plane parallel to the second portion. The tank body has a plurality of side surfaces,
The hot water storage tank according to claim 1, wherein the flange portion has at least two bent portions provided on one side surface portion. The tank body has a recessed portion that is recessed inward in a second direction orthogonal to the first direction in which the first housing and the second housing are arranged,
The hot water storage tank according to claim 1, wherein the bent portion is provided in the recess. A hot water storage tank according to any one of claims 1 to 4,
A heater for heating the water in the hot water storage tank,
A hot water storage heat exchanger characterized by being equipped with. A hot water storage heat exchanger according to claim 5;
A casing for housing the hot water storage heat exchanger,
A sanitary washing device comprising:

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