JPH05203258A - Gas water heater - Google Patents

Abstract

(57) [Abstract] [Purpose] A non-contact switch is provided on a part of the main unit so that the user can operate and stop without directly touching the operation part of the device, keeping the device clean and durable. Improve sex. [Constitution] Non-contact type switch 1 on the body of the gas water heater
0, the operation signal of the non-contact type switch 10 is input to the control circuit 9, the gas solenoid valve 2 and the water valve 6 are opened, and the main burner 1 is operated. [Effect] It is possible to allow the user to start and stop the vehicle without directly touching the operation part of the device, and to maintain the cleanliness of the device and dramatically improve the durability.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas water heater mainly used in domestic and commercial kitchens.

[0002]

2. Description of the Related Art Conventionally, for example, a gas water heater shown in FIG.
The gas is supplied to the main burner 11 by the gas solenoid valve 12 opening and closing the gas passage 13, and the heat exchanger 14
The water passage 15 to the heat exchanger 1 is opened and closed by a water valve 16.
4, a water governor 17 that adjusts the amount of water supplied to the water 4, a water flow responsive valve 18 that controls the supply of gas to the main burner in conjunction with the water governor, and a control that controls the opening and closing of the gas solenoid valve 12 and the water valve 16. It consisted of circuit 19. Then, the operation switch 20 is operated by a manual operation (by a contact operation such as pushing) and installed in a kitchen or the like.

[0003]

However, in the above-mentioned configuration, since the user has a large number of occasions to operate with dirty hands in kitchen work or the like, the device is soiled or the operation switch is directly pressed, so It had a problem of low durability.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems by providing a non-contact switch in a part of the main body of a gas water heater, so that the user does not directly press the operation switch of the main body.
The object is to provide a clean and durable gas water heater that can be operated and stopped by simply holding your hand.

[0005]

In order to solve the above problems, a gas water heater according to the present invention has a gas valve for opening and closing a gas passage to a burner and a water valve for opening and closing a water passage to a heat exchanger. When,
The heat exchanger and the water valve are provided in the middle to control the amount of water supplied, and a water governor for opening the water flow responsive valve that opens and closes the gas passage by the water supply flow is provided, and the gas valve and water valve are opened to operate the burner. The non-contact operation switch to be stopped is provided on the device body.

[0006]

With the above means, the user can operate and stop (without touching the device body) not only by touching the non-contact type operation switch provided on the device body with his / her hand, but the device can be cleaned. The durability can be dramatically improved.

[0007]

Embodiments of the gas water heater of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an embodiment of the present invention, in which 1 is a main burner, and the gas supply to the main burner 1 is controlled by a gas solenoid valve 2 serving as a gas passage 3
It is performed by opening and closing. Reference numeral 4 is a heat exchanger, and a water passage 5 to the heat exchanger 4 is opened / closed by a water valve 6. Reference numeral 7 denotes a water governor, which controls the amount of water supplied to the heat exchanger 4 and opens and closes the gas passage by the water supply flow.
Is linked to. A control circuit 9 controls opening / closing of the gas solenoid valve 2 and the water valve 6. After receiving the operation signal of the non-contact switch 10 electrically connected by the broken line in the figure, the control circuit 9 starts the operation of the burner and the supply of water.

Based on the above configuration, when a user holds his / her hand or the like over the non-contact type switch 10 and inputs a driving signal to the control circuit 9, the control circuit 9 opens the water valve 6. When the water valve 6 is opened and water is passed through the water passage 5, the water governor 7 receives water pressure and acts on the water flow responsive valve 8, and the water flow responsive valve 8 opens the gas passage 3.

On the other hand, the control circuit 9 also opens the gas solenoid valve 2 to allow the gas in the gas passage 3 to flow out, and the gas is the main burner 1
And the combustion begins.

Next, when the user puts his / her hand on the non-contact type switch 10 and inputs a stop signal to the control circuit 9, the control circuit 9 closes the water valve 6. When the water valve 6 is closed, the water flow responsive valve 8 acts to close the gas passage 3. On the other hand, the control circuit 9 also closes the gas solenoid valve 2 and the operation of the equipment is stopped.

With the above operation, the user can operate or stop the gas water heater without directly touching the device body. Therefore, in the gas water heater of the present invention, the equipment can be kept clean at all times. Further, since the user does not press or operate the operation switch, the durability of the gas water heater can be dramatically improved.

[0013]

As is apparent from the above description, the user can operate the gas water heater without touching the device body directly,
The shutdown can be done and the equipment can be kept clean at all times. Further, since the user does not press or operate the operation switch, the durability of the gas water heater can be dramatically improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a gas water heater of the present invention.

FIG. 2 is a configuration diagram of a conventional gas water heater.

[Explanation of symbols]

 1 Main burner 2 Gas solenoid valve 3 Gas passage 4 Heat exchanger 5 Water passage 6 Water valve 7 Water governor 8 Water flow response valve 9 Control circuit 10 Non-contact type switch

Claims (1)

[Claims] 1. A water valve for opening and closing a gas passage to a burner, a water valve for opening and closing a water passage to a heat exchanger, and a water passage in the middle of the heat exchanger and the water valve to adjust a water supply amount. The gas hot water is equipped with a water governor that opens a water flow responsive valve that opens and closes the gas passage by the water supply flow, and a non-contact operation switch that opens and closes the gas valve and the water valve to operate and stop the burner is installed in the equipment body Water heater.