CN205561228U - Gas water heater - Google Patents

Abstract

The utility model provides a gas water heater, the box air inlet is connected with the air intake pipe, the box gas outlet is connected with the flue gas blast pipe, the combustor air inlet is connected with the gas conveyer pipe, be provided with the gas flow control valve on this gas conveyer pipe, heat exchanger is located directly over the combustor, heat exchanger water inlet and delivery port are connected with outlet pipe and wet return respectively, be provided with the circulating pump on the outlet pipe, be provided with the water pressure switch on the wet return, and be connected with the three-way pipe, two other joints of three-way pipe are connected with buffer tank and discharge valve respectively; the heating pipe is arranged in the heat exchanger and is spiral, the cold water pipe is communicated with the water return pipe through a pipeline, a control valve is arranged on the pipeline, and a water flow switch and a water outlet valve are arranged on the hot water pipe. The utility model provides a gas heater, with low costs, the reliability is high, and it is convenient to make, can satisfy heating and domestic water demand simultaneously to can stably heat and heat supply water.

Description

A gas water heater

technical field

The utility model relates to the field of gas equipment, in particular to a gas water heater.

Background technique

With the improvement of people's living standards, hot air water heaters have already entered thousands of households, and have become the hot water heating appliances used by the majority of household consumers and commercial users. Existing household gas water heaters are expensive, complicated to install or disassemble, and costly to manufacture, unable to meet the demands of heating and hot water at the same time, and the heating and hot water supply are unstable. The above problems urgently need to be solved.

Utility model content

Based on the technical problems existing in the background technology, the utility model proposes a gas water heater to solve the above technical problems.

A gas water heater proposed by the utility model includes: a box body, an exhaust fan, a burner, a heat exchanger and a heat exchange coil; The gas pipe and the exhaust fan are arranged on the flue gas exhaust pipe, the burner and the heat exchanger are arranged in the box body, the gas inlet of the burner is connected with a gas delivery pipe, and the gas flow control valve is arranged on the gas delivery pipe , the heat exchanger is located directly above the burner, the water inlet and outlet of the heat exchanger are respectively connected with an outlet pipe and a return pipe, the outlet pipe is provided with a circulation pump, the return pipe is provided with a water pressure switch, and is connected with a three-way pipe, The other two joints of the three-way pipe are respectively connected with a buffer water tank and an exhaust valve; the heating pipe is arranged in the heat exchanger, and the heating pipe is in a spiral shape, and a heat exchange coil is coiled on its outer periphery, and the water inlet and outlet of the heating pipe The water outlets are respectively connected with a cold water pipe and a hot water pipe, and the cold water pipe and the return pipe are connected through a pipeline, the pipeline is provided with a control valve, and the hot water pipe is provided with a water flow switch and a water outlet valve.

Preferably, the gas delivery pipe is provided with a gas safety valve.

Preferably, a hot water temperature sensor is provided on the hot water pipe.

Preferably, a circulating water temperature sensor is arranged on the return water pipe.

Preferably, the gas delivery pipe is further provided with a gas pressure sensor.

The utility model proposes a gas water heater, the gas flow regulating valve is opened, the indoor air and the gas are mixed and burned in the furnace cavity of the burner, and the smoke generated is discharged to the outside by the exhaust fan through the smoke discharge pipe, and the circulating water is The heat exchanger is heated and circulates between the outlet pipe and the return pipe through the circulating pump. Since a radiator or a floor radiator can be arranged between the outlet pipe and the return pipe, it can provide heating to the room; when there is domestic water When needed, the domestic water in the heating pipe absorbs the heat of the circulating water in the heat exchanger through the heat exchange coil, the temperature of the domestic water rises, and the domestic water can be obtained by opening the water outlet valve.

When the pressure in the circulating water pipe is insufficient, the heating effect will be affected. At this time, the control valve will automatically open, and the water in the cold water pipe will flow into the outlet pipe to increase the pressure in the circulating water pipe. After the pressure in the circulating water pipe reaches the preset value , the control valve closes automatically.

A certain amount of circulating water is stored in the buffer water tank, and the circulating water is continuously replenished during heating.

When the water outlet valve is opened, the gas flow regulating valve is opened, and the burner is automatically ignited to heat the domestic water.

The gas water heater proposed by the utility model has low cost, high reliability and convenient manufacture, can meet the demands of heating and domestic water at the same time, and can stably supply heating and hot water.

Description of drawings

Fig. 1 is a structural schematic diagram of a gas water heater proposed by the utility model.

detailed description

As shown in Fig. 1, Fig. 1 is a structural schematic diagram of a gas water heater proposed by the utility model.

Referring to Fig. 1, a kind of gas water heater proposed by the utility model comprises: casing 1, exhaust fan 2, burner 3, heat exchanger 4 and heat exchange coil 13; The air inlet of casing 1 is connected with air intake pipe , the gas outlet of the box body 1 is connected with a flue gas exhaust pipe, the exhaust fan 2 is arranged on the said flue gas exhaust pipe, the burner 3 and the heat exchanger 4 are both arranged in the box body 1, and the air inlet of the burner 3 A gas delivery pipe is connected, and a gas flow regulating valve 5 is arranged on the gas delivery pipe. The heat exchanger 4 is located directly above the burner 3. The water inlet and outlet of the heat exchanger 4 are respectively connected with an outlet pipe 6 and a return pipe 7. The water outlet pipe 6 is provided with a circulation pump 8, and the water return pipe 7 is provided with a water pressure switch 9, and is connected with a three-way pipe, and the other two joints of the three-way pipe are respectively connected with a buffer water tank 10 and an exhaust valve 11; The pipe 12 is arranged in the heat exchanger 5, the heating pipe 12 is in a spiral shape, and a heat exchange coil 13 is coiled on its outer periphery. The water inlet and the water outlet of the heating pipe 12 are respectively connected with a cold water pipe 14 and a hot water pipe 15. It communicates with the return pipe 7 through a pipeline, the pipeline is provided with a control valve 16 , and the hot water pipe 15 is provided with a water flow switch 17 and a water outlet valve 18 .

In this embodiment, the gas flow regulating valve 5 is opened, and the indoor air and the gas are mixed and burned in the furnace chamber of the burner 3, and the generated flue gas is discharged to the outside by the exhaust fan 2 through the flue gas discharge pipe, and the circulating water is heated in the heat exchange. The inside of the water heater 4 is heated, and circulates between the outlet pipe 6 and the return pipe 7 through the circulation pump 8. Since a radiator or a floor radiator can be arranged between the outlet pipe 6 and the return pipe 7, the room can be heated; When there is a demand for domestic water, the domestic water in the heating pipe 12 absorbs the heat of the circulating water in the heat exchanger 4 through the heat exchange coil 13, the temperature of the domestic water rises, and the domestic water can be obtained by opening the water outlet valve.

When the pressure in the circulating water pipe is insufficient, the heating effect will be affected. At this time, the control valve 16 is automatically opened, and the water in the cold water pipe 14 flows into the outlet pipe 6 to increase the pressure in the circulating water pipe. The pressure in the circulating water pipe reaches the preset value. After setting the value, the control valve 16 is automatically closed.

A certain amount of circulating water is stored in the buffer water tank 10, and the circulating water is continuously replenished during heating, so as to ensure the stable heating.

When the water outlet valve 18 is opened, the gas flow regulating valve 5 is opened, and the burner 3 is automatically ignited to heat the domestic water.

The gas delivery pipe is provided with a gas safety valve to ensure the safety of the device.

The hot water pipe 14 is provided with a hot water temperature sensor, which can obtain the temperature of the domestic water in the hot water pipe, thereby facilitating the control of the temperature of the domestic water.

A circulating water temperature sensor is arranged on the return pipe 7, which can obtain the temperature of the circulating water in the outlet pipe, thereby facilitating the control of the temperature of the circulating water.

The gas delivery pipe is also provided with a gas pressure sensor, which can obtain the gas flow, so as to facilitate the control of the gas flow.

The gas water heater proposed by the utility model has low cost, high reliability and convenient manufacture, can meet the demands of heating and domestic water at the same time, and can stably supply heating and hot water.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Any equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (5)

1. A gas water heater is characterized in that it comprises: a casing (1), an exhaust fan (2), a burner (3), a heat exchanger (4) and a heat exchange coil (13); the casing (1 ) air inlet is connected with an air intake pipe, the air outlet of the box body (1) is connected with a flue gas exhaust pipe, the exhaust fan (2) is arranged on the flue gas exhaust pipe, the burner (3) and the heat exchanger (4) are all arranged in the box body (1), the air inlet of the burner (3) is connected with a gas delivery pipe, the gas delivery pipe is provided with a gas flow regulating valve (5), and the heat exchanger (4) is located at the Directly above the heat exchanger (3), the water inlet and outlet of the heat exchanger (4) are respectively connected with an outlet pipe (6) and a return pipe (7). The outlet pipe (6) is provided with a circulating pump (8), and the return pipe ( 7) A water pressure switch (9) is arranged on the top and is connected with a three-way pipe, and the other two joints of the three-way pipe are respectively connected with a buffer water tank (10) and an exhaust valve (11); the heating pipe (12) is set In the heat exchanger (4), the heating pipe (12) is in a spiral shape, and a heat exchange coil (13) is coiled on its outer periphery. The water inlet and the water outlet of the heating pipe (12) are respectively connected with a cold water pipe (14) and a hot The water pipe (15), the cold water pipe (14) and the return pipe (7) are communicated through a pipeline, the pipeline is provided with a control valve (16), and the hot water pipe (15) is provided with a water flow switch (17) and Outlet valve (18). 2. The gas water heater according to claim 1, characterized in that a gas safety valve is provided on the gas delivery pipe. 3. The gas water heater according to claim 1, characterized in that a hot water temperature sensor is arranged on the hot water pipe (15). 4. The gas water heater according to claim 1, characterized in that a circulating water temperature sensor is arranged on the return water pipe (7). 5. The gas water heater according to claim 1, characterized in that a gas pressure sensor is further provided on the gas delivery pipe.