CN204693773U - Gas heater - Google Patents

Abstract

The utility model discloses a kind of gas heater, comprise heat exchanger, burner, controller, and water intake end and water side, water side is connected with water intake end, main line and bypass line is connected in parallel between water intake end and heat exchanger, main line is provided with water pump and the first water flow sensor, bypass line is provided with the second water flow sensor, water tank is provided with between water side and heat exchanger, water tank has water storage cavity and is arranged on the coil pipe in this water storage cavity, the first branch road and the second branch road that are arranged in parallel is provided with between water tank and heat exchanger, the 3rd branch road and the 4th branch road that are arranged in parallel is provided with between water tank and water side, the built-in water pump of gas heater of the present utility model and water tank, and by the switching in water route, to realize preheating mode, bathroom pattern, freely switching of holding mode.Ensure that water side does not have cold water to discharge, it also avoid the phenomenon that the water side water temperature that occurs is sometimes hot and sometimes cold because multiple spot supplies water simultaneously.

Description

gas water heater

technical field

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

Background technique

Due to the design of its pipeline, the existing gas water heater needs to drain the cold water in the pipeline before releasing the hot water, which is not only inconvenient to use, but also causes great waste.

Utility model content

The main purpose of the utility model is to provide a gas water heater, which aims to solve the technical problems of cold water and unstable water temperature when users use it.

In order to achieve the above object, the utility model proposes a gas water heater, including a heat exchanger, a burner, a controller, and a water inlet and a water outlet connected to the heat exchanger, the water inlet is connected to a water source, and the water outlet For producing hot water, the water outlet can be connected to the water inlet through a return line;

A main pipeline and a bypass pipeline are connected in parallel between the water inlet end and the heat exchanger. A water pump and a first water flow sensor are arranged on the main pipeline, and a second water flow sensor is arranged on the bypass pipeline. sensor, the water pump, the first water flow sensor, the second water flow sensor and the burner are all electrically connected to the controller;

A water storage tank is provided between the water outlet end and the heat exchanger, and the water storage tank has a water storage chamber and a coil pipe arranged in the water storage chamber to exchange heat with the water in the water storage chamber , the water storage tank is provided with a water storage chamber inlet and a water storage chamber outlet communicating with the water storage chamber, and a coil inlet and a coil outlet communicating with the coil;

A first branch and a second branch are arranged in parallel between the water storage tank and the heat exchanger, and a third branch and a fourth branch are arranged in parallel between the water storage tank and the water outlet , the third branch is connected in parallel with the fourth branch and then connected to the water outlet through the water outlet pipeline, the first branch is connected to the inlet of the water storage chamber, and the third branch is connected to the outlet of the water storage chamber ; The second branch is connected to the coil inlet, and the fourth branch is connected to the coil outlet.

Preferably, a water level sensor, a third temperature probe and a shut-off valve are provided on the third branch, the water level sensor is used to detect the water level in the water storage chamber of the water storage tank, and the third temperature probe is used to The water temperature in the water storage cavity of the water storage tank is detected, and the shut-off valve is used to control the on-off of the third branch.

Preferably, a first one-way valve is provided between the water inlet end and the water inlet ends of the main pipeline and the bypass pipeline, and the first one-way valve flows from the water inlet end to the main pipeline and the bypass pipeline. The water inlet end of the pipeline is unidirectional;

The main pipeline is provided with a second one-way valve leading to the heat exchanger, and the second one-way valve is close to the drain end of the main pipeline;

The bypass pipeline is provided with a third one-way valve leading to the heat exchanger, and the third one-way valve is close to the drain end of the bypass pipeline;

A fourth one-way valve leading to the water storage tank is provided on the first branch;

A fifth one-way valve leading to the water storage tank is provided on the second branch;

A sixth one-way valve leading to the water outlet is provided on the third branch;

A seventh one-way valve leading to the water outlet is provided on the fourth branch.

Preferably, the water inlet end of the main pipeline, the water inlet end of the bypass pipeline and the water inlet end are connected through a first three-way valve, and the first three-way valve is electrically connected with the controller to Controlling the connection or shutoff of the main pipeline, the bypass pipeline and the water inlet.

Preferably, a first temperature probe is provided between the first three-way valve and the water inlet.

Preferably, the first branch and the second branch are connected to the heat exchanger through a second three-way valve.

Preferably, a second temperature probe is arranged on the outlet pipe.

Preferably, the gas water heater has a preheating mode. When the gas water heater enters the preheating mode, the controller controls the main pipeline to be opened and the bypass pipeline to be closed; the water pump is started; the burner is turned on ; The controller also controls the first branch to close, the second branch to open, and the third branch to close; The second branch, the coil pipe of the water storage tank, the fourth branch, the water outlet pipeline, and the circulation loop formed by the return pipeline circulate until the temperature of the water entering the water pump reaches the first preset value, and the controller controls The first branch is opened, the second branch is closed, the burner is turned on, and water is injected into the water storage chamber until the water in the water storage chamber reaches a preset water level, the water pump is closed, The burner is off.

Preferably, the gas water heater has a bathroom mode. When the gas water heater enters the bathroom mode, the controller controls the bypass pipeline to open, the main pipeline to close, the first branch to open, and the second branch to open. closed, the third branch is opened; the water outlet is opened.

Preferably, in the bathroom mode, when the water outlet is closed and the water temperature in the water storage chamber is lower than a second preset value, the gas water heater enters the heat preservation mode, the controller controls the main pipeline to open, and the bypass The pipeline is closed; the water pump is started; the burner is turned on; the controller also controls the first branch to be closed, the second branch to be opened, and the third branch to be closed; The water in the gas water heater circulates in the circulation loop formed by the main pipeline, the heat exchanger, the second branch, the coil pipe of the water storage tank, the fourth branch, the water outlet pipeline, and the return pipeline, so as to The water in the water storage cavity is heated.

The gas water heater of the utility model has a built-in water pump and a water storage tank, and can freely switch between the preheating mode, the bathroom mode and the heat preservation mode through the switching of the waterway. Ensure that no cold water is discharged from the water outlet, and at the same time avoid the phenomenon of hot and cold water temperature at the water outlet due to multi-point water supply.

Description of drawings

Fig. 1 is the structural representation of the utility model gas water heater;

Fig. 2 is a structural schematic diagram of the water storage tank in the gas water heater of the present invention.

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

The utility model provides a gas water heater.

Referring to Fig. 1 and Fig. 2, Fig. 1 is a structural schematic diagram of the gas water heater of the present invention; Fig. 2 is a structural schematic diagram of the water storage tank in the gas water heater of the present utility model.

In the embodiment of the utility model, the gas water heater includes a water inlet 11 connected to a water source, a water outlet 12 for producing hot water, a heat exchanger 70 connected to the water inlet 11 and the water outlet 12, and a The burner (not shown in the figure) near the burner 70, and the controller (not shown in the figure) for controlling the gas water heater. The water outlet 12 can be connected to the water inlet 11 through a return pipeline 13 . The return pipeline 13 may be arranged inside the gas water heater, or outside the gas water heater, and is connected to the water outlet 12 and the water inlet 11 when the gas water heater is installed. The main pipe 14 and the bypass pipe 15 that are arranged in parallel between the water inlet 11 and the heat exchanger 70; the main pipe 14 is provided with a water pump 60 and a first water flow sensor 31, and the bypass pipe is provided with a second Water flow sensor 32. The first water flow sensor 31, the second water flow sensor 32 and the burner are all electrically connected to the controller so that the controller can control the work of the burner according to the measurement results of the first water flow sensor 31 and the second water flow sensor 32 . A water storage tank 50 is provided between the water outlet 12 and the heat exchanger 70. The water storage tank 50 has a water storage chamber 51 and a coil pipe 52 arranged in the water storage chamber 51. The coil pipe 52 can be connected to the water storage chamber. The water in the chamber 51 performs heat exchange. The water storage tank 50 is provided with a water storage chamber inlet 53 and a water storage chamber outlet 54 communicating with the water storage chamber 51 , and a coil pipe inlet 55 and a coil pipe outlet 56 communicating with the coil pipe 52 . A first branch 16 and a second branch 17 arranged in parallel are arranged between the water storage tank 50 and the heat exchanger 70, and a third branch arranged in parallel is arranged between the water storage tank 50 and the water outlet 12. Road (not shown in the figure) and the fourth branch 18. The third branch is connected in parallel with the fourth branch 18 and connected to the water outlet 12 through the water outlet pipeline 19 . The first branch 16 is connected to the inlet 53 of the water storage chamber, the third branch is connected to the outlet 54 of the water storage chamber; the second branch 17 is connected to the coil inlet 55 , and the fourth branch 18 is connected to the coil outlet 56 .

The gas water heater has a preheating mode, a bathroom mode and a heat preservation mode. When the gas water heater enters the preheating mode, the controller controls the main pipeline 14 to open, the bypass pipeline 15 to close, the water pump 60 to start, and the first branch 16 to close. The second branch 17 is opened, and the third branch is closed. When the first water flow sensor 31 detects that a water flow passes through, the controller controls the burner to open; heat exchanger 70, the second branch 17, the coil pipe 52 of the water storage tank 50, the fourth branch 18, the water outlet pipeline 19, and the circulation loop formed by the return pipeline 13 until the water temperature entering the water pump 60 reaches The first preset value, the controller controls the first branch 16 to open, the second branch 17 to close, and inject water into the water storage chamber 51 until the water in the water storage chamber 51 reaches the preset water level, then control the water pump 60 Closed, the burner is closed, and the preheating of the water in the water storage chamber 51 is completed. When the gas water heater enters the bathroom mode, the controller controls the bypass pipeline 15 to open, the main pipeline 14 to close, the first branch 16 to open, the second branch 17 to close, the third branch to open, and the water outlet 12 to open. After the second water flow sensor 32 detects that water flows through, the controller controls the burner to turn on. The water entering the gas water heater from the water inlet 11 enters the heat exchanger 70 through the main pipeline 14 for heating, and then passes through the first branch 16, the water storage chamber 51, the third branch and the water outlet pipeline 19 in sequence, and finally passes through the water outlet. 12 sends out hot water to supply hot water to users, wherein the water outlet 12 can be a shower or a faucet. In the bathroom mode, when the water outlet 12 is closed and the water temperature in the water storage chamber 51 is lower than the second preset value, the gas water heater enters the heat preservation mode. At this time, the controller controls the main pipeline 14 to open and the bypass pipeline 15 to close. , the water pump 60 is started, the burner is turned on, the first branch 16 is closed, the second branch 17 is opened, and the third branch is closed; The second branch 17, the coil pipe 52 of the water storage tank 50, the fourth branch 18, the water outlet pipeline 19, and the circulation loop formed by the return pipeline 13 circulate, and the water in the water storage chamber 51 is treated by the coil pipe 52. Heating is performed to realize the heat preservation function of the water storage cavity 51 .

The gas water heater of the present utility model has a built-in water pump 60 and a water storage tank 50, and can freely switch between the preheating mode, the bathroom mode and the heat preservation mode through the switching of the waterway. It is ensured that no cold water is discharged from the water outlet 12, and the phenomenon of hot and cold water temperature at the water outlet 12 caused by multi-point water supply is also avoided.

Based on a certain embodiment of the present utility model, a water level sensor 43, a third temperature probe 23 and a shut-off valve 80 may also be provided on the third branch, and the water level sensor 43 is used to detect the temperature in the water storage cavity 51 of the water storage tank 50. The third temperature probe 23 is used to detect the water temperature in the water storage cavity 51 of the water storage tank 50, and the stop valve 80 is used to control the on-off of the third branch.

Based on a certain embodiment of the utility model, in order to prevent the water from flowing backwards in the pipeline of the gas water heater, a first check valve can be provided between the water inlet end 11 and the water inlet end of the main pipeline 14 and the bypass pipeline 15 91 , the first one-way valve 91 is unidirectionally connected from the water inlet end 11 to the water inlet ends of the main pipeline 14 and the bypass pipeline 15 .

A second one-way valve 92 leading to the heat exchanger 70 can also be provided on the main pipeline 14 , and the second one-way valve 92 is preferably near the drain end of the main pipeline 14 .

A third one-way valve 93 leading to the heat exchanger 70 can also be provided on the bypass line 15 , and the third one-way valve 93 is preferably near the drain end of the bypass line 15 .

A fourth one-way valve 94 leading to the water storage tank 50 may also be provided on the first branch 16 .

A fifth one-way valve 95 leading to the water storage tank 50 may also be provided on the second branch 17 .

A sixth one-way valve 96 leading to the water outlet 12 can also be provided on the third branch, and the sixth one-way valve 96 is preferably close to the water storage tank 50 .

A seventh one-way valve 97 leading to the water outlet 12 may also be provided on the fourth branch 18 .

In a certain embodiment of the present invention, the water inlet end of the main pipeline 14, the water inlet end of the bypass pipeline 15, and the water inlet end 11 are connected through a first three-way valve 41, and the first three-way valve 41 is connected with the control The device is electrically connected to control the communication or shutoff of the main pipeline 14, the bypass pipeline 15 and the water inlet 11.

Based on a certain embodiment of the present invention, a first temperature probe 21 may also be provided between the first three-way valve 41 and the water inlet 11, and the first temperature probe 21 is used to measure the temperature of the main pipeline 14 (water pump 60) or the side The water temperature at pipeline 15 places.

In a certain embodiment of the present invention, the first branch 16 , the second branch 17 are connected to the heat exchanger 70 through the second three-way valve 42 . The second three-way valve 42 is electrically connected with the controller to control the connection or shutoff of the first branch 16 , the second branch 17 and the heat exchanger 70 .

Based on a certain embodiment of the present invention, a second temperature probe 22 may also be provided on the water outlet pipeline 19 . The second temperature probe 22 is used to measure the water temperature in the water outlet pipeline 19 .

In a certain embodiment of the utility model, in order to realize fully automatic control, the first water flow sensor 31 and the second water flow sensor 32 are preferably Hall switches; the first three-way valve 41 and/or the second three-way valve The valve 42 is preferably an electric three-way valve; the water pump 60 is preferably an electric water pump; the stop valve 80 is preferably an electromagnetic stop valve.

Need to explain the first three-way valve 41, the second three-way valve 42, the water level sensor 43, the first temperature probe 21, the second temperature probe 22, the third temperature probe 23, the first water flow sensor 31, the second water flow sensor The flow sensor 32, the water pump 60, the shut-off valve 80, and the work of the burner can be uniformly controlled by one controller according to the logical relationship of the above-mentioned different modes, or can be controlled point-to-point by multiple controllers according to the logical relationship of the above-mentioned different modes , and its working principle is basically the same, which will not be repeated here.

It should be noted that the technical solutions of the various embodiments of the present invention can be combined with each other, but it must be based on the realization of those skilled in the art. Combination does not exist, nor is it within the scope of protection required by the utility model.

The above are only preferred embodiments of the present utility model, and are not therefore limiting the patent scope of the present utility model. All equivalent structural transformations made by using the utility model specification and accompanying drawings are directly or indirectly used in other related technologies. Fields are all included in the scope of patent protection of the utility model in the same way.

Claims (10)

1. a gas heater, comprises heat exchanger, burner, controller, and the water intake end be connected with described heat exchanger and water side, this water intake end is connected with water source, and this water side is used for output hot water, and described water side can be connected with described water intake end by return line, it is characterized in that

Main line and bypass line is connected in parallel between described water intake end and described heat exchanger, described main line is provided with water pump and the first water flow sensor, described bypass line is provided with the second water flow sensor, and described water pump, the first water flow sensor, the second water flow sensor and burner are all electrically connected with described controller;

Water tank is provided with between described water side and heat exchanger, described water tank has water storage cavity and is arranged in this water storage cavity to carry out the coil pipe of heat exchange with the water in described water storage cavity, described water tank is provided with the water storage cavity entrance that is communicated with described water storage cavity and water storage cavity exports, and the coil inlet be communicated with described coil pipe and coil outlets;

The first branch road and the second branch road that are arranged in parallel is provided with between described water tank and heat exchanger, the 3rd branch road and the 4th branch road that are arranged in parallel is provided with between described water tank and water side, described 3rd branch road is connected with described water side by outlet pipeline with after the 4th branch circuit parallel connection, described first branch road is connected with water storage cavity entrance, and described 3rd branch road exports with water storage cavity and is connected; Described second branch road is connected with coil inlet, and described 4th branch road is connected with coil outlets.

2. gas heater as claimed in claim 1, it is characterized in that, described 3rd branch road is provided with level sensor, the 3rd temp probe and stop valve, described level sensor is for detecting the water level in the water storage cavity of described water tank, described 3rd temp probe is for detecting the water temperature in the water storage cavity of described water tank, and described stop valve is for controlling the break-make of described 3rd branch road.

3. gas heater as claimed in claim 1, is characterized in that,

Described water intake end and be provided with the first check valve between described main line and the water inlet end of bypass line, described first check valve is from described water intake end to the water inlet end one-way conduction of described main line and bypass line;

Described main line is provided with the second check valve to described heat exchanger conducting, and this second check valve is near the discharge ends of described main line;

Described bypass line is provided with the 3rd check valve to described heat exchanger conducting, and the 3rd check valve is near the discharge ends of described bypass line;

Described first branch road is provided with the 4th check valve to described water tank conducting;

Described second branch road is provided with the 5th check valve to described water tank conducting;

Described 3rd branch road is provided with the 6th check valve to the conducting of described water side;

Described 4th branch road is provided with the 7th check valve to the conducting of described water side.

4. gas heater as claimed in claim 1, it is characterized in that, the water inlet end of described main line, the water inlet end of described bypass line and described water intake end are connected by the first triple valve, and described first triple valve and described controller are electrically connected to control described main line, bypass line is communicated with or shutoff with described water intake end.

5. gas heater as claimed in claim 4, is characterized in that, be provided with the first temp probe between described first triple valve and described water intake end.

6. gas heater as claimed in claim 1, it is characterized in that, described first branch road, the second branch road are connected by the second triple valve with heat exchanger.

7. gas heater as claimed in claim 1, is characterized in that, described outlet pipeline is provided with the second temp probe.

8. the gas heater as described in any one of claim 1 to 7, is characterized in that, described gas heater has preheating mode, and after described gas heater enters preheating mode, described controller controls described main line and opens, and bypass line is closed; Described starting mode of pump; Described burner is opened; Described controller also controls described first branch road and cuts out, and the second branch road is opened, and the 3rd branch road is closed; Water in described gas heater is entered at coil pipe, the 4th branch road, the outlet pipeline by described main line, heat exchanger, the second branch road, water tank by water intake end, and circulate in the closed circuit of return line formation, until the water temperature entering described water pump reaches the first preset value, described controller controls described first branch road and opens, second branch road is closed, described burner is opened, water filling in described water storage cavity, until when the water in described water storage cavity reaches preset water level, described water pump cuts out, and described burner cuts out.

9. gas heater as claimed in claim 1, it is characterized in that, described gas heater has bathroom pattern, after described gas heater enters bathroom pattern, described controller controls described bypass line and opens, and main line is closed, and described first branch road is opened, second branch road is closed, and the 3rd branch road is opened; Described water side is opened.

10. gas heater as claimed in claim 9, is characterized in that, under bathroom pattern, when water side close and water temperature in described water storage cavity lower than the second preset value time, described gas heater enters holding mode, and described controller controls described main line and opens, and bypass line is closed; Described starting mode of pump; Described burner is opened; Described controller also controls described first branch road and cuts out, and described second branch road is opened, and the 3rd branch road is closed; Water in described gas heater is entered at coil pipe, the 4th branch road, the outlet pipeline by described main line, heat exchanger, the second branch road, water tank by water intake end, and circulate, to heat the water in described water storage cavity in the closed circuit of return line formation.