CN106403274A - Gas water heater with heat supply function - Google Patents

Abstract

The invention discloses a gas water heater with heating function, comprising: a heat exchanger, a burner, a direct-current fan, a gas proportional valve and a main controller, the burner provides heat energy for the heat exchanger, the direct-current fan and the gas proportional The valve is connected with the main controller and changes the air volume and air-fuel ratio of the burner according to the instructions issued by the main controller; A circulating water pump, a first water flow sensor and a circulating water tank are arranged on the road, and a heating water pump, a second water flow sensor and an expansion tank are arranged on the heating waterway, the circulating water pump, the first water flow sensor, the heating water pump, the second The water flow sensor is connected with the main controller. The invention enables the whole gas water heater to have heating and hot water supply functions at the same time, and can completely neutralize the problem of sudden temperature rise when switching from a heating waterway to a hot water supplying waterway, and the waterway switching is convenient.

Description

A gas water heater with heating function

technical field

The invention relates to the technical field of fluid heaters, in particular to a gas water heater with a heating function.

Background technique

A gas water heater refers to a gas appliance that uses gas as a fuel to transfer heat to cold water flowing through a heat exchanger through combustion heating to achieve the purpose of preparing hot water. It is mainly composed of valve body assembly, main burner, small fire burner, heat exchanger, safety device and so on. The basic working principle of the gas water heater is that cold water enters the water heater, flows through the water-gas linkage valve body, under the action of a certain pressure difference of the flowing water, pushes the water-gas linkage valve, and at the same time pushes the DC power micro switch to turn on the power and start the pulse lighter. The existing gas water heater only has the function of hot water and cannot realize heating.

A gas wall-hung boiler is a kind of gas equipment with a powerful central heating function for households. It is not a gas water heater in the traditional sense, and is essentially different from a water heater. Although the existing gas wall-hung boiler has the functions of heating and hot water by setting domestic hot water heat exchange, it has the problem that the switching water temperature is too high when the heating function is switched to the hot water function. There are defects such as long heating time and large fluctuation of water temperature.

Contents of the invention

Aiming at the problems existing in the prior art, the object of the present invention is to provide a gas water heater with simple structure, small volume, integrated heating and hot water supply functions, and little influence on temperature when the heating function is switched to the hot water function.

To achieve the above object, the present invention adopts the following technical solutions.

A gas water heater with heating function, comprising: a heat exchanger, a burner, a DC fan, a gas proportional valve and a main controller, the burner provides heat energy for the heat exchanger, and the DC fan and the gas proportional valve communicate with the main controller The controller is connected to change the air volume and air-fuel ratio of the burner according to the instructions issued by the main controller; it is characterized in that there are independent hot water supply channels and heating water channels on the heat exchanger, and there are The circulating water pump, the first water flow sensor and the circulating water tank are provided with the heating water pump, the second water flow sensor and the expansion tank on the heating waterway, the circulating water pump, the first water flow sensor, the heating water pump and the second water flow sensor Connect with the main controller.

As an improvement, the hot water supply channel includes an interconnected water inlet pipe, an outlet pipe, and a return pipe connected between the water inlet pipe and the water outlet pipe; the circulating water pump and the first water flow sensor are arranged on the water inlet pipe, The circulating water tank is arranged on the outlet pipe.

As an improvement, a one-way valve is provided on the water return pipe, and the water flow of the one-way valve flows from the water outlet pipe to the water inlet pipe in the leading direction.

As an improvement, the heating water circuit includes: a heating water inlet pipe and a heating water outlet pipe, the heating water inlet pipe, the heating water outlet pipe and the heating radiator form a circuit; the heating water pump and the second water flow sensor are arranged on the heating water inlet pipe , the expansion tank is arranged on the heating outlet pipe.

As an improvement, a water replenishment pipeline is connected between the hot water supply channel and the heating water channel, and a water supply valve connected to the main controller is provided on the water supply pipeline.

As an improvement, the gas water heater further includes a casing, and the heat exchanger, the burner, the DC blower, the gas proportional valve, the main controller, the circulating water tank and the expansion tank are all integrated in the casing.

As an improvement, when hot water is used, the water flows along the hot water supply channel, passing through the circulating water pump, the first water flow sensor, the heat exchanger, and the circulating water tank in sequence, and then the water is discharged. The size and setting use the hot water temperature to automatically adjust the opening of the gas proportional valve and the speed of the DC fan to achieve a constant temperature.

As an improvement, use the hot water front circulating water pump and burner to start to keep the temperature of the whole hot water supply circuit constant.

As an improvement, when heating, the heating water pump starts, and the water flows along the heating waterway. The main controller opens the replenishment valve to replenish water according to the set heating water volume and heating temperature, and heats the circulating heating water to the heating temperature.

As an improvement, the heating water pump and the circulating water pump are not started at the same time.

The beneficial effects of the present invention are:

1. By setting mutually independent hot water supply channels and heating water channels on the heat exchanger, the entire gas water heater has the functions of heating and hot water supply at the same time. At the same time, by setting the circulating water tank on the hot water supply channel, the problem of sudden temperature rise when switching from the heating water channel to the hot water supply channel can be completely neutralized, and the water channel switching is convenient.

2. The circulating water tank, expansion tank, burner, heat exchanger, etc. are all integrated into one shell. Compared with the traditional central water heater with water storage tank, it has the advantages of simple structure, small size and convenient installation and use. (Switching from heating to hot water) high-temperature water is realized; on the other hand, it can avoid the cold water of the water heater for the second time; at the same time, it can also solve the water temperature fluctuation caused by the fluctuation of water pressure.

Description of drawings

Figure 1 is a schematic structural view of the central water heater provided by the present invention.

Explanation of reference signs:

1: Heat exchanger, 2: Burner, 3: DC fan, 4: Gas proportional valve, 5: Main controller, 6: Hot water supply channel, 7: Heating water channel, 8: Circulating water pump, 9: First water Flow sensor, 10: circulating water tank, 11: heating water pump, 12: second water flow sensor, 13: expansion tank, 14: replenishing water valve, 15: casing.

6-1: water inlet pipe, 6-2: water outlet pipe, 6-3: water return pipe, 6-4: one-way valve.

7-1: heating water inlet pipe, 7-2: heating water outlet pipe.

detailed description

In order to facilitate those skilled in the art to better understand the essence of the present invention, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, a gas water heater with heating function includes: a heat exchanger 1, a burner 2, a DC fan 3, a gas proportional valve 4 and a main controller 5, and the burner 2 is a heat exchanger 1 To provide heat energy, the DC blower 3 and the gas proportional valve 4 are connected to the main controller 5 and change the air volume and air-fuel ratio of the burner 2 according to the instructions issued by the main controller 5; it is characterized in that the heat exchanger 1 is provided with The hot water supply waterway 6 and the heating waterway 7 are mutually independent, and the circulating water pump 8, the first water flow sensor 9 and the circulating water tank 10 are arranged on the hot water supplying waterway 6, and the heating water pump 11, the first water circulation tank 10 are arranged on the heating waterway 7 Two water flow sensors 12 and an expansion tank 13 , the circulating water pump 8 , the first water flow sensor 9 , the heating water pump 11 , and the second water flow sensor 12 are connected to the main controller 5 .

Wherein, the hot water supply waterway 6 includes a water inlet pipe 6-1 connected to each other, a water outlet pipe 6-2, and a return pipe 6-3 connected between the water inlet pipe 6-1 and the water outlet pipe 6-2; The circulating water pump 8 and the first water flow sensor 9 are arranged on the water inlet pipe 6-1, and the circulating water tank 10 is arranged on the water outlet pipe 6-2. A one-way valve 6-4 is provided on the return pipe 6-3, and the water flow of the one-way valve 6-4 flows from the water outlet pipe 6-2 to the water inlet pipe 6-1.

The heating waterway 7 includes: a heating water inlet pipe 7-1 and a heating water outlet pipe 7-2, and the heating water inlet pipe 7-1, the heating water outlet pipe 7-2 and the heating radiator (used to heat the user's room) form a circuit The heating water pump 11 and the second water flow sensor 12 are arranged on the heating water inlet pipe 7-1, and the expansion water tank 13 is arranged on the heating water outlet pipe 7-2.

A water supply pipeline is connected between the hot water supply waterway 6 and the heating waterway 7, and a water supply valve 14 connected to the main controller 5 is arranged on the water supply pipeline, so as to supplement water for the heating waterway according to the heating water flow rate set by the user.

When hot water is used, the water flows along the hot water supply channel 6, passing through the circulating water pump 8, the first water flow sensor 9, the heat exchanger 1, and the circulating water tank 10 in sequence, and then the water is discharged. Water flow size and setting Use hot water temperature to automatically adjust the opening of the gas proportional valve and the speed of the DC fan to achieve a constant temperature. In order to realize instant heating with hot water, the circulating water pump 8 and the burner 2 can be started before hot water is used to make the whole hot water supply channel 6 reach the set temperature.

During heating, the heating water pump 11 starts, and the water flow flows along the heating waterway 7. The main controller 5 opens the replenishment valve 15 to replenish the heating waterway according to the heating water volume and heating temperature set by the user, and heats the circulating heating water to the heating temperature. In this embodiment, the heating water pump 11 and the circulating water pump 8 cannot be started at the same time, so as to avoid accidental burns caused by excessive temperature of the hot water point.

The above specific embodiments have described the essence of the present invention in detail, but the scope of protection of the present invention cannot be limited thereto. Obviously, under the enlightenment of the essence of the present invention, those skilled in the art can also make many improvements and modifications. It should be noted that these improvements and modifications all fall within the protection scope of the claims of the present invention.

Claims (10)

1. a kind of gas heater with heating function, including：Heat exchanger, burner, DC fan, combustion gas Proportioning valve and master controller, described burner provides heat energy, described DC fan and combustion gas ratio for heat exchanger The air quantity of instruction change burning device and air-fuel ratio that example valve is connected with master controller and is sent according to master controller； It is characterized in that, it is provided with separate supplying hot water water route and heating water route on the heat exchanger, in supplying hot water Water route is provided with water circulating pump, the first water flow sensor and circulation water pot, is provided with heating on heating water route Water pump, the second water flow sensor and expansion tank, described water circulating pump, the first water flow sensor, confession Warm water pump, the second water flow sensor are connected with master controller.

2. gas heater according to claim 1 is it is characterised in that described supplying hot water water route includes mutually The water inlet pipe of connection, outlet pipe, and it is connected to the return pipe between water inlet pipe, outlet pipe；Described circulation Water pump, the first water flow sensor are arranged on water inlet pipe, and described circulation water pot is arranged on outlet pipe.

3. gas heater according to claim 2 is it is characterised in that be provided with check valve on return pipe, The water conduction direction of described check valve flow to water inlet pipe from outlet pipe.

4. gas heater according to claim 1 is it is characterised in that described heating water route includes：Heating Water inlet pipe and heating outlet pipe, described heating water inlet pipe, heating outlet pipe and heating radiator constitute loop； Described heating water pump, the second water flow sensor are arranged on heating water inlet pipe, and described expansion tank is arranged on On heating outlet pipe.

5. gas heater according to claim 1 it is characterised in that supplying hot water water route and heating water route Between be connected with moisturizing pipeline, the water compensating valve being connected with master controller is provided with moisturizing pipeline.

6. gas heater according to claim 1 it is characterised in that it also includes housing, hand over by described heat Parallel operation, burner, DC fan, gas ratio valve, master controller, circulation water pot and expansion tank all collect Become in housing.

7. gas heater according to claim 1 is it is characterised in that when using hot water, current are along supplying hot water Flowing in water route, sequentially passes through water circulating pump, the first water flow sensing unit, heat exchanger, circulates water outlet after water pot, Master controller automatically adjusts combustion gas ratio with hot water's amount size and setting with hot water temperature according to what user set Example valve opening and DC fan rotating speed reach constant temperature.

8. gas heater according to claim 7 is it is characterised in that with water circulating pump, burning before hot water Device starts, and makes whole supplying hot water water route constant temperature.

9. gas heater according to claim 1 it is characterised in that heating when, heat starting mode of pump, Current open water compensating valve moisturizing along the flowing of heating water route, master controller according to the setting heating water yield, heating temperature And circulation heating water is heated to for dim temperature.

10. gas heater according to claim 1 is it is characterised in that described heating water pump and recirculated water Start when pump is different.