Water heater

Abstract

To provide a technique capable of inhibiting a burden from being imposed on an electric wire part connected to an operating device after the operating device is detached to expose an exposure target portion for inspection.SOLUTION: An operating device 130 for a water heater 1 is fixed to a fixed part 190 held within a casing 2 in an attachable / detachable manner. An exposure target part that is exposed during inspection is provided on a rear side of the operating device 130. A temporarily holding piece 140 including a second plate part 142 (extension part) and a first plate part 141 (base part) is provided on a back surface side of the operating device 130. A holding part 170 is provided in the casing 2 or at a position on the lower side of the temporarily holding piece 140 within the casing 2. In the water heater 1, with an electric wire part 160 connected to the operating device 130 and a connection target part 125 and with the operating device 130 detached from the fixed part 190, external operation for locking the temporarily holding piece 140 on the holding part 170 is performed so that the operating device 130 is temporarily held.SELECTED DRAWING: Figure 8

Description

Technical Field

[0001] The present disclosure relates to a water heater.

Background Art

[0002] Patent Document 1 discloses an example of a water heater. In the water heater of Patent Document 1, an opening is provided in a casing constituting a front portion, and an operating device is exposed through this opening. The water heater disclosed in Patent Document 1 has a configuration in which the operating device is fixed to the housing body side, and a part of the operating device is exposed through an opening provided in a casing constituting a front cover.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a water heater, there are cases where a part to be exposed (exposed target part) during inspection is arranged inside the housing. In such a case, the arrangement relationship between the operating device and the exposed target part becomes a problem. For example, in order to be configured to be accessible from the front side to both the operating device and the exposed target part, it is desirable to arrange the operating device and the exposed target part so as not to overlap front and back, but there are concerns about demerits such as bulkiness of the device.

[0005] As a configuration for solving such a problem, a configuration in which the operating device is arranged so as to cover the exposed target part from the front side can be considered. However, when this configuration is adopted, when the exposed target part is exposed during inspection, the handling of the operating device becomes a problem. For example, the operating device is often electrically connected to other devices via a wire part. In such a configuration, after removing the operating device for inspection, the wire part is likely to be burdened.

[0006] The present disclosure relates to a water heater, and an object thereof is to provide a technique capable of suppressing a load on an electric wire portion connected to an operation device after the operation device is removed to expose an exposed target portion for inspection.

Means for Solving the Problems

[0007] A water heater according to one aspect of the present disclosure is a combustion device that burns gas, a heat exchanger to which combustion exhaust generated by combustion in the combustion device is supplied, a housing that houses the combustion device and the heat exchanger, an operation device that receives an operation from the outside, an electric wire portion, and a water heater having wherein the operation device is detachably fixed to a fixed portion held in the housing, one end side of the electric wire portion is electrically connected to the operation device, and the other end side of the electric wire portion is electrically connected to a controller housed in the housing, an exposed target portion to be exposed during a predetermined inspection is provided on the rear side of the operation device, on the back side of the operation device, there are provided a temporary holding piece having an extending portion extending downward and a base portion connected to the extending portion at the upper end side of the extending portion, and a main holding piece disposed below the temporary holding piece in a state where the operation device is fixed to the fixed portion, a holding portion, which is a portion for locking the main holding piece in the fixed state, is provided at a position below the position of the temporary holding piece in the fixed state in the housing or in the housing, when an external operation is performed to lock the temporary holding piece to the holding portion in a state where the electric wire portion is electrically connected to the operation device and the controller and the operation device is removed from the fixed portion, the operation device is temporarily held.

Advantages of the Invention

[0008] The technology according to the present disclosure can suppress a burden from being applied to an electric wire portion connected to an operation device after the operation device is removed in a water heater to expose an inspection target portion for inspection.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying Out the Invention

[0010] Hereinafter, embodiments of the present disclosure are listed and exemplified. Note that the features [1] to [5] exemplified below may be combined in any combination without contradiction.

[0011] 〔1〕A combustion device that burns gas, and A heat exchanger to which combustion exhaust generated by combustion in the combustion device is supplied, A housing that houses the combustion device and the heat exchanger, An operating device that receives an external operation, An electric wire part, A water heater having, The operating device is detachably fixed to a fixed part held in the housing, One end side of the electric wire part is electrically connected to the operating device, and the other end side of the electric wire part is electrically connected to a controller housed in the housing, An exposed part to be exposed at a predetermined inspection is provided on the rear side of the operating device, On the back side of the operating device, there are a temporary holding piece having an extending part extending downward and a base part connected to the extending part at the upper end side of the extending part, and a main holding piece arranged below the temporary holding piece in a fixed state where the operating device is fixed to the fixed part, A holding part, which is a part for locking the main holding piece in the fixed state, is provided at a position below the position of the temporary holding piece in the fixed state in the housing or in the housing, When an external operation is performed to lock the temporary holding piece to the holding part in a state where the electric wire part is electrically connected to the operating device and the controller and the operating device is removed from the fixed part, the operating device is temporarily held Water heater.

[0012] The water heater according to [1] can temporarily hold the operating device while maintaining the connection state by the electric wire part after the operating device is removed to expose the exposed target part for inspection. Therefore, this water heater can expose the exposed target part for inspection and enable inspection while maintaining the state where the operating device is connected to the connection target part via the electric wire part. Moreover, since this water heater can temporarily hold the operating device during inspection, it is possible to reduce the occurrence of situations where the electric wire part is pulled or the placement location of the operating device becomes troublesome during inspection, and it is easy to switch to a situation where the operator can perform the inspection work well.

[0013] 〔2〕The exposed target part is a gas pressure inspection port The water heater according to claim 1 The water heater according to [1]

[0014] The water heater according to [2] can arrange the gas pressure inspection port by using the space behind the operating device, and can enjoy the spatial advantages due to the front-back arrangement of the operating device and the gas pressure inspection port. And when an operator performs an inspection using the gas pressure inspection port, this water heater makes it easier to perform the inspection work better

[0015] 〔3〕The holding part is held or integrated with the lower side wall part of the housing The water heater according to claim 1 or claim 2 The water heater according to [1] or [2]

[0016] The water heater according to [3] can provide the holding part by using the lower side wall part of the housing, and it is easy to simplify the structure and make it compact

[0017] 〔4〕The base part is a first plate part The extending part is a second plate part The second plate part bends from the first plate part and extends in a cantilever shape downward The holding part has a slit The operating device is temporarily held by inserting the second plate part into the slit The water heater according to any one of [1] to [3]

[0018] The water heater according to [4] can temporarily hold the operating device by a simple working method such as inserting a plate-shaped extending part into a slit, which is advantageous in terms of workability

[0019] 〔5〕With the operating device fixed to the fixed part, the first plate surface side of the second plate part faces forward and the second plate surface side of the second plate part faces backward The slit is configured to be elongated along the left-right direction The operation device is temporarily held in a posture where the front side of the operation device faces the front side. The water heater according to [4].

[0020] The water heater according to [5] can temporarily hold the operation device by a simpler operation, and further, in the temporarily held state, the operation device can be maintained in a posture where the front side of the operation device faces the front side.

[0021] <First Embodiment> The following description relates to the water heater 1 according to the first embodiment. 1. Overall Configuration of the Water Heater 1 FIG. 1 is a front view illustrating the water heater 1 according to the first embodiment. FIG. 2 is a front view schematically illustrating a configuration in which the front cover 60, the operation device 130, etc. are removed from the housing 2 of the water heater 1.

[0022] As shown in FIG. 2, the water heater 1 includes a housing 2, a combustion device 3, a heat exchanger 4, an exhaust section 5, a fan 7, etc. The housing 2 is a box-shaped case made of a metal material, and includes a housing main body 30 forming a box body with an open front, and a front cover 60 (FIG. 1) detachably attached to the housing main body 30. The front cover 60 shown in FIG. 1 closes the housing main body 30 from the front side. As shown in FIG. 2, the housing 2 houses various components such as the combustion device 3, the heat exchanger 4, the exhaust section 5, and the fan 7. The combustion device 3 is disposed near the center inside the housing 2. The heat exchanger 4 is disposed above the combustion device 3 inside the housing 2. The exhaust section 5 is disposed above the heat exchanger 4 inside the housing 2. The gas distribution unit 10 is disposed between the combustion device 3 and the front cover 60. The fan 7 is disposed below the combustion device 3 inside the housing 2.

[0023] The combustion device 3 is a device that burns the gas (fuel gas) supplied via the gas distribution unit 10. The combustion device 3 includes an inner case 3A, a burner unit (not shown), etc. The inner case 3A is a rectangular box-shaped case that fits inside the housing 2. Inside the inner case 3A, a burner unit group is provided in which burner units, which are flat type lean-richening burners, are arranged side by side in the left-right direction. On the upper part of the front surface of the inner case 3A, a discharge electrode for ignition, a frame rod for flame detection, etc. are provided.

[0024] The heat exchanger 4 is a device to which combustion exhaust gas based on the combustion of gas in the combustion device 3 is supplied. The heat exchanger 4 includes a metal casing 4A that constitutes its outer shell, and heat transfer tubes housed inside this casing 4A. The heat exchanger 4 introduces the combustion exhaust gas from the combustion device 3 and passes it through the inside, and performs heat exchange between this combustion exhaust gas and the water flowing inside the heat transfer tubes. The combustion exhaust gas that has passed through the heat exchanger 4 is discharged to the exhaust section 5.

[0025] The exhaust section 5 includes an exhaust section main body 5A and an exhaust pipe 100. The exhaust section 5 functions to guide the combustion exhaust gas discharged from the heat exchanger 4 upward and discharge it to the outside of the water heater 1 via the exhaust pipe 100.

[0026] The fan 7 is a fan that supplies combustion air. The fan 7 includes a drive section having a motor, blades, etc., and a supply port that supplies combustion air, and sends the combustion air toward the combustion device 3 from this supply port. The supply port of the fan 7 is fixed near the lower end of the combustion device 3.

[0027] As shown in FIGS. 1 and 2, the water heater 1 is provided with a gas inlet 191 to which an external gas pipe is connected, a water inlet 192 to which a water pipe is connected, and a hot water outlet 193 on the lower side of the housing 2. The water inlet 192 is an inlet through which water is introduced from a water pipe provided outside the water heater 1. The water introduced into the water inlet 192 is supplied to the heat transfer pipes of the heat exchanger 4 via the water supply pipe 115. A part of the water supply pipe 115 is shown in FIG. 2. The hot water outlet 193 is an outlet through which hot water is led out to the outside of the water heater 1. The hot water led out from the heat transfer pipes of the heat exchanger 4 is discharged from the hot water outlet 193 via the hot water discharge pipe 116 connected to the downstream end of the heat transfer pipes.

[0028] In the water heater 1 shown in FIG. 2, the gas inlet 191 is an inlet through which gas is introduced from a gas pipe provided outside the water heater 1. The gas introduced into the gas inlet 191 is supplied to the gas distribution unit 10 via a gas supply unit (not shown) equipped with an original valve, a proportional valve, etc. The gas supplied to the gas distribution unit 10 is distributed so as to pass through a plurality of holes (not shown) provided in the combustion device 3, and is supplied to the combustion device 3 through these holes. The combustion device 3 burns the gas (fuel gas) supplied into the combustion device 3 via the gas distribution unit 10. The exhaust gas (combustion exhaust gas) generated by the combustion of the gas in the combustion device 3 flows from the combustion device 3 into the heat exchanger 4, passes through the heat exchanger 4, and is discharged from the exhaust unit 5 to the outside (outside the water heater 1).

[0029] 2. Details of the housing The following description relates to the details of the housing 2 in the water heater 1. As shown in FIG. 2, the housing 2 houses various components such as the combustion device 3 and the heat exchanger 4. As shown in FIG. 3, the housing 2 includes a housing main body 30, a front cover 60, and a packing 90. As shown in FIGS. 1 and 3, the front cover 60 is a part that constitutes the front portion of the housing 2. The housing main body 30 is a box-shaped case body that houses the combustion device 3, the heat exchanger 4, etc. The front cover 60 is a lid-shaped case body that is detachably attached to the housing main body 30 from the front side.

[0030] The front cover 60 is configured in a rectangular shape when viewed from the front, with an opening provided at the rear end, and has a box-like form that is open at the rear side. As shown in FIG. 3, the front cover 60 includes a front wall portion 62, an upper wall portion 66, a lower wall portion 64, and side wall portions 68, 69, and these are configured to be connected. The front cover 60 has a shallow-bottom box-like form that is open at the rear side. The front wall portion 62 is a plate-like part that constitutes the front portion of the housing 2 and is a part that closes the opening 40. In the example of FIG. 3, an opening 62Z is formed in the front wall portion 62. The opening 62Z is the portion where the operating device 130 shown in FIG. 1 is fitted. In FIG. 3, the illustration of the operating device 130 is omitted. The upper wall portion 66 is a plate-like part that extends rearward from the upper end of the front wall portion 62. The lower wall portion 64 is a plate-like part that extends rearward from the lower end of the front wall portion 62. The upper wall portion 66 and the lower wall portion 64 are arranged facing each other vertically. The pair of side wall portions 68, 69 are plate-like parts that extend rearward from both the left and right sides of the front wall portion 62. The pair of side wall portions 68, 69 are arranged facing each other in a configuration that forms a pair left and right.

[0031] As shown in FIG. 3, the housing body 30 has an upper side wall portion 32, a lower side wall portion 34, a pair of side wall portions 35, 36, and a rear side wall portion 38, and these are configured to be connected. The upper side wall portion 32, the lower side wall portion 34, the pair of side wall portions 35, 36, and the rear side wall portion 38 are all configured in a plate-like shape. The upper side wall portion 32, the lower side wall portion 34, and the pair of side wall portions 35, 36 are integrally connected and are arranged to surround the upper, lower, left, and right of the region (the space inside the housing) where the combustion device 3 and the heat exchanger 4 are accommodated. The housing body 30 has a box-like form with an opening 40 provided at the front side. The opening 40 is constituted by the front end portions of the upper side wall portion 32, the lower side wall portion 34, and the pair of side wall portions 35, 36, and has a configuration that is open at the front side.

[0032] As shown in FIG. 3, the packing 90 is a member that seals between the housing main body 30 and the front cover 60. The packing 90 is a sealing member that blocks or suppresses the inflow and outflow of gas through the space between the opening 40 of the housing main body 30 and the front cover 60. The packing 90 is in a plate shape and in an annular shape. The packing 90 is disposed along the opening 40 of the housing main body 30 and along the annular rear end portion of the front cover 60, and is sandwiched front and rear by the front cover 60 and the housing main body 30.

[0033] The front cover 60 is fixed to the housing main body 30 by screw members 21 and 22. Specifically, each of the fixing portions 71A and 71B that form a part of the front wall portion 62 overlaps with the fixed portions 43A and 43B provided on the housing main body 30 in the front-rear direction. One screw member 21 is inserted into and fixed to the screw hole portion 53X of the fixed portion 43A and the screw hole 71X of the fixing portion 71A, and the other screw member 21 is inserted into and fixed to the screw hole portion 53Y of the fixed portion 43B and the screw hole 71Y of the fixing portion 71B. Further, the projecting portions 72C and 72D provided on the lower wall portion 64 overlap with the lower side wall portion 34, and one screw member 22 is inserted into and fixed to the screw hole portion 54X of the fixed portion 44A and the screw hole 72X of the fixing portion 72A, and the other screw member 22 is inserted into and fixed to the screw hole portion 54Y of the fixed portion 44B and the screw hole 72Y of the fixing portion 72B.

[0034] 3. Peripheral Structure of the Operating Device The operating device 130 shown in FIG. 1 is a device that receives input operations from the outside. The operating device 130 is a device capable of performing operations for inputting various information, and includes an input unit (a plurality of buttons, a touch panel, etc.), a display unit, and the like. The display unit and the input unit are provided on the front surface of the operating device 130 and are arranged so as to be visible from the outside of the housing 2. The display unit may be any device capable of displaying characters and information. The input unit is a device that detects pressing operations, contact operations, etc. performed on itself by an operator and recognizes or outputs information corresponding to the operation content of the operator. The operating device 130 may be provided with various electric circuits, a storage unit, an information processing device, and the like. In the representative example described below, the operating device 130 is configured to be communicable with a controller (not shown) arranged at a location remote from the operating device 130, and is configured as a remote controller that gives information such as instructions to the controller and acquires information from the controller.

[0035] As shown in FIG. 1, the operating device 130 is configured in a rectangular shape when viewed from the front. The inside of the operating device 130 is configured as shown in FIG. 4, for example. The operating device 130 has a device main body 130A including the above-described operating unit and the above-described display unit, and a holding plate 130B that holds the device main body 130A. In FIGS. 5 and 6, the details inside the device main body 130A are omitted. Specifically, in FIGS. 5 and 6, the hatched area of the device main body 130A is an area where the internal details are omitted and shown.

[0036] As shown in FIG. 4, the apparatus main body 130A has a configuration in which a plurality of resin members (first member 151, second member 152, third member 153) overlap. The first member 151, the second member 152, and the third member 153 all have a flat configuration, and the resin portion where the first member 151, the second member 152, and the third member 153 overlap has a substantially plate-like shape as a whole. The first member 151 that constitutes the front side of the plurality of resin members is a box-shaped body having a shallow bottom with an open rear end and a depth direction in the forward direction, and a part of it constitutes the front surface 131. A sheet-like member 155 is provided so as to cover a part of the first member 151. The sheet-like member 155 constitutes the surface portion of a push button configured to be operable by being pressed by a user. The plurality of resin members have an elastic deformation portion that forms part of the push button, a frame portion that surrounds the push button, and the like. The second member 152 is a substrate portion on which electronic components are mounted on the substrate. The thickness direction of the substrate in the second member 152 (substrate portion) is the front-rear direction. The third member 153 is a plate-like lid. The thickness direction of the third member 153 is the front-rear direction. The third member 153 (lid) can function as a back lid attached to the first member 151 so as to close the opening provided on the rear end side of the first member 151 (box-shaped body).

[0037] The holding plate 130B is formed in a plate shape, for example, by a metal material, a resin material, or the like. In the representative example described below, the holding plate 130B is configured as a metal plate. The holding plate 130B includes a flat plate portion 148, bent portions 149A, 149B, 149C, a temporary holding piece 140, a main holding piece 146, and the like. The flat plate portion 148 is a portion configured in a flat plate shape with a predetermined thickness. The apparatus main body 130A is fixed to the flat plate portion 148 in a configuration that covers the flat plate portion 148 from the front side. The front surface of the flat plate portion 148 contacts the rear surface of the apparatus main body 130A. In a normal use state (ordinary use state) as shown in FIG. 5, the thickness direction of the flat plate portion 148 is the front-rear direction. The bent portion 149A bends from one end in the left-right direction of the flat plate portion 148 toward the rear side and functions to increase the strength of the holding plate 130B. The bent portion 149B bends from the other end in the left-right direction of the flat plate portion 148 toward the rear side and functions to increase the strength of the holding plate 130B. The bent portion 149C bends from the upper end of the flat plate portion 148 toward the rear side and functions to increase the strength of the holding plate 130B.

[0038] An opening 148A, which is a hole penetrating in the front-rear direction, is provided in the flat plate portion 148. The opening 148A is configured as a horizontally long oval hole. The upper end of the inner edge of the opening 148A is configured as an inner edge portion in the left-right direction. On the rear side of the operation device 130, a temporary holding piece 140 is provided at the upper end of the inner edge portion of the opening 148A. The temporary holding piece 140 has a second plate portion 142 (extension portion) extending downward and a first plate portion 141 (base portion) connected to the second plate portion 142 on the upper end side of the second plate portion 142. The first plate portion 141 is connected to the inner edge portion of the opening 148A and is configured to extend toward the rear side. The first plate portion 141 is configured in a plate shape with the up-down direction as the thickness direction and is configured to bend at a substantially right angle from the flat plate portion 148. The second plate portion 142 is configured in a plate shape with the front-rear direction as the thickness direction and is configured to bend from the rear end of the first plate portion 141 and extend in a cantilevered manner downward.

[0039] At the lower end of the holding plate 130B, a main holding piece 146 is provided. The main holding piece 146 is a locking portion that is disposed below the temporary holding piece 140 when the operating device 130 is in a fixed state fixed to the fixed portion 190 as shown in FIG. 5, and is a portion that locks while contacting the holding portion 170 in a state of being inserted into the slit 178 of the holding portion 170 in the above fixed state. The main holding piece 146 has a second locking plate portion 146B extending downward and a first locking plate portion 146A connected to the second locking plate portion 146B on the upper end side of the second locking plate portion 146B. The first locking plate portion 146A is connected to the lower end portion of the flat plate portion 148 and extends rearward from the lower end portion. The first locking plate portion 146A is configured in a plate shape with the vertical direction as the thickness direction and is bent at a substantially right angle from the flat plate portion 148. The second locking plate portion 146B is configured in a plate shape with the front-rear direction as the thickness direction, and is bent from the rear end of the first locking plate portion 146A and extends in a cantilevered manner downward. The second locking plate portion 146B is held in a state of being inserted into the slit 178 of the holding portion 170 to be described later in a normal state (a state in which the water heater 1 is used) as shown in FIGS. 5 to 7. In a state where the second locking plate portion 146B is inserted into the slit 178 as shown in FIGS. 5 to 7, the relative movement of the second locking plate portion 146B backward is restricted (prohibited) by the slit 178. That is, the relative movement of the vicinity of the rear end portion of the apparatus main body 130A toward the rear side is restricted. On the other hand, the vicinity of the lower end portion of the peripheral component 130D disposed around the apparatus main body 130A in a form assembled to the apparatus main body 130A is covered by the front wall portion 62 of the front cover 60, and the movement toward the front side is restricted (prohibited) by the front wall portion 62. In FIGS. 5, 6, 8, and 9, the details of the internal structure of the apparatus main body 130A and the peripheral component 130D are omitted and are schematically shown by hatching.

[0040] The fixing member 130C is a member for fixing the operating device 130 to the fixed portion 190. Specifically, it is configured as a member for fixing the holding plate 130B to the fixed portion 190. In the representative example of this embodiment, the fixing member 130C is not included in the operating device 130 and is not included in the fixed portion 190 either. However, the operating device 130 may be configured to include the fixing member 130C. Alternatively, the fixed portion 190 may be configured to include the fixing member 130. That is, the operating device 130 may be fixed to the fixed portion 190 indirectly via other members or directly. When the operating device 130 is fixed to the fixed portion 190, the relative position of the operating device 130 with respect to the fixed portion 190 is determined, and the relative position of the operating device 130 within the housing 2 is determined. The fixing member 130C is configured to fix the holding plate 130B and the fixed portion 190 to be connected by fixing a part to the holding plate 130B and the other part to the fixed portion 190. The fixing member 130C has, for example, a configuration in which a metal plate is bent, and includes a first fixing plate portion 136A, a second fixing plate portion 136B, and a connecting plate portion 136C. The first fixing plate portion 136A is provided to overlap the flat plate portion 148 in an arrangement where its plate thickness direction is the front-rear direction, and is fixed to the flat plate portion 148 by a screw member 133. The second fixing plate portion 136B is arranged in a configuration that contacts the front surface of the fixed portion 190 in an arrangement where its plate thickness direction is the front-rear direction, and is fixed to the fixed portion 190 by a screw member 134. The connecting plate portion 136C is an intermediate portion that connects the first fixing plate portion 136A and the second fixing plate portion 136B, and is a plate-like portion that extends rearward from the lower end portion of the first fixing plate portion 136A. The second fixing plate portion 136B is connected to the rear end portion of the connecting plate portion 136C. The upper end side portion of the operating device 130 is fixed to the fixed portion 190 by the fixing member 130C, thereby restricting (prohibiting) relative movement in the front-rear direction, left-right direction, and up-down direction. Note that the vicinity of the upper end portion of the device main body 130A is covered by the front wall portion 62 of the front cover 60, and the movement forward is restricted (prohibited) by the front wall portion 62.

[0041] The fixed part 190 is configured as a component separate from the operating device 130 and the wire part 160, and is a component fixed and held inside the housing main body 30. The fixed part 190 may be directly fixed to the housing main body 30, or may be fixed to the housing main body 30 via other members. The fixed part 190 may be a frame member, a case body, or other configurations.

[0042] The wire part 160 shown in FIGS. 6 and 7 is a path for transmitting power and signals between the operating device 130 and electrical components other than the operating device 130 housed in the housing main body 30. A plurality of wires are provided in the wire part 160. One end side of the wire part 160 is electrically connected to the operating device 130. The other end side of the wire part 160 is connected to the connection target part 125 housed in the housing 2. The connection target part 125 is, for example, a controller having an information processing function. That is, the other end side of the wire part 160 is electrically connected to the controller (connection target part 125) housed in the housing 2, and signals can be transmitted and received between the controller. The intermediate position between the operating device 130 and the connection target part 125 of the wire part 160 is held by the holding member 110. The holding member 110 is fixed to the first locking plate part 146A, and the wire part 160 is held so as to pass through the hole part 112 provided in the holding member 110.

[0043] At a position below the temporary holding piece 140 within the housing body 30 or in the housing body 30, a holding portion 170, which is a portion for locking the temporary holding piece 140, is provided. In the examples of FIGS. 5 to 7, the holding portion 170 is held by the lower side wall portion 34 in a form fixed to the lower side wall portion 34 of the housing 2. The holding portion 170 includes a plate-shaped support portion 176A in which a slit 178 is formed, plate-shaped lower bent portions 176B and 176C that bend downward from the support portion 176A, and a plate-shaped fixing portion 176D fixed to the lower side wall portion 34. As shown in FIG. 7, both of the lower bent portions 176B and 176C are in a plate-shaped form that extends long in the left-right direction, and both are arranged in a configuration where one plate surface faces forward and the other plate surface faces backward. Specifically, the thickness direction of the lower bent portions 176B and 176C is the front-rear direction, and a predetermined interval is maintained between the lower bent portions 176B and 176C. The fixing portion 176D is integrally formed with the lower bent portion 176B and is provided by bending from the lower bent portion 176B, and is arranged to overlap the upper side of the lower side wall portion 34 in an arrangement where its plate thickness direction is the up-down direction, and is fixed to the lower side wall portion 34. The support portion 176A is provided integrally with the lower bent portions 176B and 176C in a configuration connected to both upper end portions of the lower bent portions 176B and 176C, and is arranged at a position at a predetermined height from the lower side wall portion 34. One surface of the support portion 176A is arranged facing upward, and specifically, it is arranged such that its plate thickness direction is the up-down direction. Most of the upper surface of the support portion 176A is configured as a horizontal plane parallel to the left-right direction and the front-rear direction. The slit 178 is configured as an elongated long hole or notch along the left-right direction, and in the examples of FIGS. 6 and 7, it is configured as a through hole provided in the support portion 176A. The size (left-right width) of the hole in the left-right direction of the slit 178 is larger than the left-right width of the second locking plate portion 146B and larger than the left-right width of the second plate portion 142. The size (front-rear width) of the hole in the front-rear direction of the slit 178 is larger than the plate thicknesses of the second locking plate portion 146B and the second plate portion 142 and smaller than the front-rear interval between the lower bent portions 176B and 176C.

[0044] The operating device 130 configured as described above is detachably fixed to the fixed part 190 held in the housing 2. Specifically, with the front cover 60 removed as shown in FIG. 8, when the holding plate 130B is removed from the fixing member 130C, the operating device 130 can be detached from the housing main body 30 and other components within the housing main body 30. Specifically, when the screw member 133 is removed, the fixing state of the holding plate 130B with respect to the fixing member 130C is released, and by this release, the operating device 130 is removed from the fixed part 190. Then, with the wire part 160 connected to the operating device 130 and the connection target part 125 and the operating device 130 removed from the fixed part 190, after the main holding piece 146 is detached from the holding part 170, an external operation is performed to lock the temporary holding piece 140 to the holding part 170 as shown in FIG. 9, so that the operating device 130 is temporarily held. Specifically, as shown in FIG. 9, when the second plate part 142 is inserted into the slit 178, the operating device 130 is temporarily held in such a state that the temporary holding piece 140 continues to be hooked on the holding part 170 with the second plate part 142 inserted into the slit 178.

[0045] In this configuration, when the operating device 130 is fixed to the fixed part 190 as shown in FIG. 8, the first plate surface 142A (front surface) of the second plate part 142 faces the front side, the second plate surface 142B (rear surface) faces the rear side, and the front surface 131 of the operating device 130 faces the front side. On the other hand, even in the temporarily held state as shown in FIG. 9, the first plate surface 142A faces the front side and the second plate surface 142B faces the rear side, and the operating device 130 is temporarily held in a posture where the front surface 131 side of the operating device 130 faces the front side.

[0046] On the rear side of the operating device 130, an exposed target portion to be exposed during a predetermined inspection is provided. In the examples of FIGS. 8 and 9, the exposed target portion is the gas pressure inspection port 120. In the water heater 1, when the front cover 60 and the operating device 130 are removed and the operating device 130 is shifted from the front side of the gas pressure inspection port 120, the gas pressure inspection port 120 is exposed as shown in FIG. 9. In the state where the gas pressure inspection port 120 is exposed as shown in FIG. 9, the gas pressure inspection port 120 can be visually recognized from the front side of the water heater 1, and access to the gas pressure inspection port 120 can be achieved.

[0047] 4. Examples of effects The water heater 1 can temporarily hold the operating device 130 while maintaining the connection state by the electric wire portion 160 after the operating device 130 is removed in order to expose the exposed target portion (gas pressure inspection port 120) for inspection. Therefore, this water heater 1 can expose the exposed target portion (gas pressure inspection port 120) for inspection and enable the inspection while maintaining the state where the operating device 130 is connected to the connection target portion 125 via the electric wire portion 160. Moreover, since this water heater 1 can temporarily hold the operating device 130 during the inspection, it is possible to less likely cause a situation where the electric wire portion 160 is pulled or there is trouble with the placement location of the operating device 130 during the inspection, and it is easy to switch to a situation where the operator can perform the inspection work well.

[0048] The water heater 1 can arrange the gas pressure inspection port 120 by using the space behind the operating device 130, and can enjoy the space merit due to the front-rear arrangement of the operating device 130 and the gas pressure inspection port 120. And when the operator performs an inspection using the gas pressure inspection port 120, this water heater 1 makes it easier to perform the inspection work better.

[0049] The water heater 1 can provide the holding portion 170 by using the lower side wall portion of the housing 2, and it is easy to simplify the configuration and make it compact.

[0050] The water heater 1 can temporarily hold the operating device 130 by a simple working method such as inserting the second plate portion 142 (plate-like extension portion) into the slit 178, which is advantageous in terms of workability.

[0051] The water heater 1 can temporarily hold the operating device 130 by a simpler operation, and further, when in the temporarily held state, the operating device 130 can be maintained in a posture where the front surface 131 side of the operating device 130 faces the front side.

[0052] <Other Embodiments> The present invention is not limited to the embodiments described by the above description and drawings. For example, the features of the above-described or below-described embodiments can be combined in any combination within a non-contradictory range. Also, any feature of the above-described or below-described embodiments can be omitted if it is not explicitly stated as essential. Furthermore, the above-described embodiments may be modified as follows.

[0053] The internal configuration of the operating device 130 used in the water heater of the above embodiment is merely an example, and any configuration that can receive an external operation by the user is acceptable. For example, the configuration in FIG. 4 is merely an example, and the device main body 130A can have various internal configurations as long as it can receive an input operation from the outside. For example, it may have a touch panel or the like, or may have a slide operation part, a rotation operation part, or the like.

[0054] In the above embodiment, the holding part 170 is configured as a separate member from the lower side wall part of the housing 2 and is held by the lower side wall part of the housing 2, but the holding part 170 may be integrated with the lower side wall part of the housing 2. That is, a part of the lower side wall part of the housing 2 may be configured as a holding part, and the operating device 130 may be temporarily held so as to be hooked on the lower side wall part of the housing 2.

[0055] It should be considered that all aspects of the embodiments disclosed this time are illustrative and not restrictive. The scope of the present invention is not limited to the embodiments disclosed this time, and it is intended that all modifications within the scope indicated by the claims or within the scope equivalent to the claims are included.

Explanation of Reference Numerals

[0056] 1: Water heater 2: Housing 3: Combustion device 4: Heat exchanger 30: Housing body 60: Front cover 120: Gas pressure detection port (exposed target part) 125: Connection target part (controller) 130: Operating device 131: Front surface of the operating device 140: Temporary holding piece 141: First plate part (base part) 142: Second plate part (extension part) 142A: First plate surface 142B: Second plate surface 146: Main holding piece 160: Wire part 170: Holding part 178: Slit 190: Fixed part

Claims

1. A combustion device for burning gas, A heat exchanger to which the combustion exhaust generated by the combustion in the combustion device is supplied, A housing that houses the combustion device and the heat exchanger, An operating device that receives an external operation, An electric wire part, A water heater having the above, The operating device is detachably fixed to a fixed part held in the housing, One end side of the electric wire part is electrically connected to the operating device, and the other end side of the electric wire part is electrically connected to a controller housed in the housing, An exposed part to be exposed at the time of a predetermined inspection is provided on the rear side of the operating device, On the back side of the operating device, there is a temporary holding piece having an extending part extending downward and a base part connected to the extending part at the upper end side of the extending part, and a main holding piece arranged below the temporary holding piece in a fixed state where the operating device is fixed to the fixed part, A holding part, which is a part for locking the main holding piece in the fixed state, is provided at a position below the position of the temporary holding piece in the fixed state in the housing or in the housing, When an external operation is performed to lock the temporary holding piece to the holding part in a state where the electric wire part is electrically connected to the operating device and the controller and the operating device is removed from the fixed part, the operating device is temporarily held Water heater.

2. The exposed part is a gas pressure inspection port The water heater according to Claim 1.

3. The holding part is held or integrated with the lower side wall part of the housing The water heater according to Claim 1 or Claim 2.

4. The base part is a first plate part, The extending part is a second plate part, The second plate part bends from the first plate part and extends in a cantilever shape downward, The holding part has a slit, The operating device is temporarily held when the second plate part is inserted into the slit The water heater according to any one of Claims 1 to 3.

5. In a state where the operating device is fixed to the fixed part, the first plate surface side of the second plate part faces the front side and the second plate surface side of the second plate part faces the rear side, The slit is configured to be elongated along the left - right direction, The operating device is temporarily held in a posture where the front side of the operating device faces the front side The water heater according to Claim 4.

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