JP2019066102A - Water heater - Google Patents

Abstract

To provide a water heater having a solenoid valve with excellent maintainability.SOLUTION: A water heater includes: a hot water storage tank 81 for storing hot water; a heater 82 for heating water in the hot water storage tank 81; a hot water delivery pipe 84 for delivering hot water from the hot water storage tank 81; a water supply pipe 83 for supplying water into the hot water storage tank 81; a control device 91; a remote controller 92; and a solenoid valve 1. The solenoid valve 1 is disposed in the water supply pipe 83, and operation can be performed from the remote controller 92 so that only the solenoid valve 1 is opened/closed. To confirm the opening/closing operation of the solenoid valve 1, a maintenance worker and other persons can perform the opening/closing operation of the solenoid valve 1 from the remote controller 92. Due to this configuration, the water heater having the solenoid valve with excellent maintainability can be provided.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a water heater equipped with a solenoid valve.

  Heretofore, the following configuration has been disclosed regarding a water heater provided with this type of solenoid valve (see, for example, Patent Document 1).

  A hot water storage tank for storing hot water, a bath hot water supply pipe for supplying hot water from the hot water storage tank to the bathtub, a flow rate detecting means for detecting the flow rate of hot water in the bath hot water supply pipe, a solenoid valve for opening and closing a flow path in the bath hot water supply pipe; When the flow detection means detects the flow of hot water despite the fact that it has notification means for giving notification of abnormality and control means for giving an instruction to open or close the solenoid valve and the control means gives an instruction to close the solenoid valve Is a configuration in which the notification means reports an abnormality.

JP, 2011-2123, A

  However, in the above-mentioned conventional configuration, when the failure of the opening and closing operation of the solenoid valve is notified by the notifying means, measures are taken to replace the solenoid valve. Not disclosed.

  This invention solves the said subject, and it aims at providing the water heater provided with the solenoid valve excellent in maintainability.

  In order to solve the above-mentioned conventional problems, a water heater according to the present invention includes a hot water storage tank for storing hot water, a heating device for heating water in the hot water storage tank, a hot water outlet pipe for discharging hot water from the hot water storage tank, and the hot water storage tank. A water supply pipe for supplying water to the inside, a control device, a remote control, and an electromagnetic valve, the electromagnetic valve being disposed on the water supply pipe, and only the electromagnetic valve opens and closes. It is characterized in that it can be operated from the remote control.

  As a result, when the opening / closing operation of the solenoid valve becomes abnormal due to foreign matter mixed in the solenoid valve, etc., the solenoid valve is replaced, but the maintenance worker etc. can check the opening / closing operation of the replaced solenoid valve. However, since the open / close operation of the solenoid valve can be operated from the remote control, it is possible to provide the water heater equipped with the solenoid valve excellent in maintainability.

  According to the present invention, it is possible to provide a water heater provided with a solenoid valve having excellent maintainability.

(A) Sectional view at the time of closing of solenoid valve of water heater in Embodiment 1 of the present invention (b) Sectional view at the time of opening of solenoid valve of water heater in Embodiment 1 of the present invention Diagram of the water heater according to the first embodiment of the present invention

  A first invention relates to a hot water storage tank for storing hot water, a heating device for heating water in the hot water storage tank, a hot water discharge pipe for hot water discharge from the hot water storage tank, a water supply pipe for supplying water into the hot water storage tank, and a control device And a remote control, and an electromagnetic valve, wherein the electromagnetic valve is disposed in the water supply pipe and can be operated from the remote control so that only the electromagnetic valve opens and closes. It is a water heater characterized by.

  As a result, when the opening / closing operation of the solenoid valve becomes abnormal due to foreign matter mixed in the solenoid valve, etc., the solenoid valve is replaced, but the maintenance worker etc. can check the opening / closing operation of the replaced solenoid valve. However, since the open / close operation of the solenoid valve can be operated from the remote control, it is possible to provide the water heater equipped with the solenoid valve excellent in maintainability.

  A second invention is characterized in that, particularly in the first invention, the remote controller can be operated so that only the solenoid valve opens and closes without operating the heating device. .

  As a result, when the opening / closing operation of the solenoid valve becomes abnormal due to foreign matter mixed in the solenoid valve, etc., the solenoid valve is replaced, but the maintenance worker etc. can check the opening / closing operation of the replaced solenoid valve. However, since the opening / closing operation of the solenoid valve can be operated from the remote control without operating the heating device, it is possible to provide a water heater provided with the solenoid valve excellent in maintainability.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited by the embodiment.

Embodiment 1
FIG. 1 is a cross-sectional view of the solenoid valve of the water heater according to the first embodiment, FIG. 1 (a) shows the closed state of the valve body, and FIG. 1 (b) shows the open state of the valve body. .

  In the solenoid valve 1 according to the first embodiment, an inflow line 11 and an outflow line 12 are formed in the body 10, and a valve seat 13 is formed upstream of the outflow line 12. A filter 14 is provided in the inflow line 11.

  The solenoid valve 1 comprises a valve body 20 disposed upstream of the valve seat 13 and downstream of the inflow line 11, a plunger 30 for operating the valve body 20, an electromagnetic coil 40 for operating the plunger 30, and a plunger And a plunger guide 50 for housing 30 therein. The valve body 20 and the plunger 30 are disposed coaxially with the outflow conduit 12.

  The valve body 20 has a diaphragm plate 21 larger than the opening diameter of the valve seat 13, a diaphragm 22 extending from the outer periphery of the diaphragm plate 21, a pilot hole 23 penetrating the center of the diaphragm plate 21, and an outer periphery of the diaphragm plate 21. And a bypass hole 24 penetrating therethrough.

  At the center of the diaphragm plate 21, there are formed a first projection 21a projecting toward the plunger 30 and a second projection 21b projecting toward the outflow conduit 12; one end of the pilot hole 23 is the first It forms in the protrusion part 21a, and the other end of the pilot hole 23 is formed in the 2nd protrusion part 21b.

  The diaphragm 22 includes a diaphragm outer peripheral portion 22 a extending from the outer periphery of the diaphragm plate 21 and a diaphragm inner peripheral portion 22 b covering a part of the surface of the diaphragm plate 21 on the outflow conduit 12 side. The diaphragm inner circumferential portion 22 b abuts on the valve seat 13.

  At the tip of the plunger 30, a disc 31 made of an elastic body is provided. Further, at the rear end of the plunger 30, a spring 32 for pressing the plunger 30 is disposed. The electromagnetic coil 40 is disposed on the outer periphery of the plunger 30.

  The plunger guide 50 includes a cylindrical portion 51 on which the plunger 30 slides, and an enlarged portion 52 formed on the opening side of the cylindrical portion 51. A back pressure chamber 60 is formed between the valve body 20 and the enlarged portion 52. The back pressure chamber 60 is in communication with the inflow line 11 via the bypass hole 24.

  In FIG. 1A, when the energization of the electromagnetic coil 40 is turned off, the plunger 30 is pressed by the spring 32 and is in contact with the valve body 20. In the state of FIG. 1 (a), since the pilot hole 23 is closed by the disk 31, the back pressure chamber 60 communicates with the inflow conduit 11 by the bypass hole 24, and therefore the pressure is higher than that of the outflow conduit 12. The valve body 20 is maintained in the closed state.

  In FIG. 1B, the electromagnetic coil 40 is turned on, and the plunger 30 is moved in a direction away from the valve body 20. In the state of FIG. 1 (b), since the pilot hole 23 is opened, the fluid in the back pressure chamber 60 flows to the outflow conduit 12, and the back pressure chamber 60 has a lower pressure than the inflow conduit 11, Since the pressure of the inflow line 11 is applied to the surface on the valve seat 13 side of the valve body 20, the valve body 20 is maintained in the open state.

  The back pressure chamber 60 is provided with a foreign matter intrusion preventing member 70 that prevents foreign matter flowing in from the bypass hole 24 from entering between the plunger 30 and the cylindrical portion 51. By preventing the foreign matter from entering between the plunger 30 and the cylindrical portion 51 by the foreign matter intrusion prevention material 70, the sliding operation of the plunger 30 can be stably performed.

  The foreign material intrusion prevention material 70 is preferably formed of a material through which the liquid passes, and a non-woven fabric can be used. By forming the foreign matter intrusion prevention material 70 with a material through which the liquid passes, the fluid can be present between the plunger 30 and the cylindrical portion 51, so the operation of the plunger 30 is not disturbed. In addition, by using a non-woven fabric as the foreign matter intrusion prevention material 70, the liquid can be allowed to pass and the deformation is easy, so the operation of the plunger 30 is not affected.

  FIG. 2 is a block diagram of a water heater using the solenoid valve according to the first embodiment.

  The water heater according to the first embodiment includes a hot water storage tank 81 for storing hot water, a heating device 82 for heating water in the hot water storage tank 81, a water supply pipe 83 for supplying water into the hot water storage tank 81, and a hot water storage tank 81. It is connected to the mixing valve 86 branched from the water supply pipe 83, the pressure reduction valve 85 provided in the water supply pipe 83, the mixing valve 86 provided in the middle of the water discharge pipe 84, and the water supply pipe 83 A water supply branch pipe 87, a forward pipe 88 for guiding the lower water in the hot water storage tank 81 to the heating device 82, and a return pipe 89 for returning the hot water from the heating device 82 to the hot water storage tank 81 are provided.

  In the water heater according to the first embodiment, the solenoid valve 1 is provided in the water supply pipe 83 on the upstream side of the pressure reducing valve 85 and the outlet pipe 84 on the downstream side of the mixing valve 86. Then, on the downstream side of the solenoid valve 1 of the hot water discharge pipe 84, a flow rate detection sensor 90 is provided. A tapping temperature sensor 93 is provided downstream of the mixing valve 86 of the tapping pipe 84. The forward pipe 88 is provided with a pump 88a.

  The return pipe 89 is branched into a tank upper return pipe 89b and a tank lower return pipe 89c by a three-way valve 89a, the tank upper return pipe 89b is connected to the upper portion of the hot water storage tank 81, and the lower tank return pipe 89c is a hot water storage tank 81 Connected to the bottom of the.

  The heating device 82 is a heat pump device configured of a compressor 82a, a water heat exchanger 82b, an expansion valve 82c, and an air heat exchanger 82d. The forward pipe 88 and the return pipe 89 are connected to the water heat exchanger 82b.

  Further, the water heater according to the first embodiment has the control device 91 and the remote controller 92, and the water supply pipe 83 on the upstream side of the pressure reducing valve 85 and the outlet pipe 84 on the downstream side of the mixing valve 86 are electromagnetic. A valve 1 is provided.

  The solenoid valve 1 provided in the water supply pipe 83 on the upstream side of the pressure reducing valve 85 can be directly operated from the remote controller 92 so that only the solenoid valve 1 opens and closes through the control device 91. ing.

  That is, in the electromagnetic valve 1 provided in the water supply pipe 83 on the upstream side of the pressure reducing valve 85, when water supply is necessary from the water supply pipe 83, the water supply pipe 83 is not supplied without opening the electromagnetic valve 1 due to contamination. Since water does not flow in the hot water storage tank 81 or the water supply branch pipe 87 via the valve, the water is not supplied to the mixing valve 86 either, and the tapping temperature can not be adjusted by the mixing valve 86. Then, the "error display" is displayed on the remote control 92.

  And while replacing | exchanging the electromagnetic valve 1 of the malfunctioning with the solenoid valve 1 which has the foreign material intrusion prevention material 70 by this Embodiment 1, while confirming the opening-and-closing operation of the solenoid valve 1 after replacement | exchange, The maintenance worker or the like directly operates the remote control 92 so that only the opening and closing operation is performed, and the normal opening and closing operation of the solenoid valve 1 can be confirmed through the control device 91 by the operation.

  That is, even without operating the heat pump device which is the heating device 82 for heating the water in the hot water storage tank 81, it is possible to confirm the opening / closing operation of only the solenoid valve 1 after replacement, thereby supplying water to the hot water storage tank 81. It can be confirmed.

  According to the above configuration, it is possible to provide a water heater provided with the solenoid valve 1 excellent in maintainability.

  According to the present invention, since a water heater provided with a solenoid valve excellent in maintainability can be provided, it can be applied not only to a water heater for household use but also to a water heater for business use and the like.

DESCRIPTION OF SYMBOLS 1 solenoid valve 10 body 11 inflow pipeline 12 outflow pipeline 13 valve seat 14 filter 20 valve body 21 diaphragm plate 21a 1st protrusion 21b 2nd protrusion 22 diaphragm 22a diaphragm outer periphery 22b diaphragm inner periphery 23 pilot hole 24 bypass Bore 30 Plunger 31 Disc 32 Spring 40 Electromagnetic coil 50 Plunger guide 51 Tubular part 52 Enlarged part 60 Back pressure chamber 70 Foreign material intrusion prevention material 81 Hot water storage tank 82 Heating device 82a Compressor 82b Water heat exchanger 82c Expansion valve 82d Air heat Exchanger 83 water supply pipe 84 tapping pipe 85 pressure reducing valve 86 mixing valve 87 water supply branch pipe 88 forward pipe 88a pump 89 return pipe 89a three-way valve 89b tank upper return pipe 89c tank lower return pipe 90 flow detection sensor 91 controller 92 remote control 93 Hot water temperature sensor

Claims (2)

With a hot water storage tank for storing hot water,
A heater for heating water in the hot water storage tank;
A hot water outlet pipe for tapping hot water from the hot water storage tank,
A water supply pipe for supplying water into the hot water storage tank;
Equipped with a controller, remote control, and solenoid valve,
The solenoid valve is disposed in the water supply pipe, and
The water heater is characterized in that the remote controller can be operated so that only the solenoid valve opens and closes. The water heater according to claim 1, wherein the water heater can be operated from the remote controller so that only the solenoid valve opens and closes without operating the heating device.

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