CN215571197U

CN215571197U - Gas water heater

Info

Publication number: CN215571197U
Application number: CN202023113560.8U
Authority: CN
Inventors: 郭延隆; 张保国; 许银河
Original assignee: Qingdao Economic And Technology Development District Haier Water Heater Co ltd; Zhengzhou Haier New Energy Technology Co ltd
Current assignee: Qingdao Economic And Technology Development District Haier Water Heater Co ltd; Zhengzhou Haier New Energy Technology Co ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2022-01-18
Anticipated expiration: 2030-12-22

Abstract

The utility model relates to the technical field of water heaters, in particular to a gas water heater. This gas heater includes gas heating element, gas heating element is connected with inlet tube and outlet pipe, gas heater still includes: the temperature measuring component is used for detecting the water inlet temperature in the water inlet pipe; one end of the bypass pipe can be communicated with the water inlet pipe, and the other end of the bypass pipe is communicated with the water outlet pipe; the electric heating assembly is connected in series in the bypass pipe and is used for heating the water in the bypass pipe; and the switching valve group can selectively conduct the water inlet pipe with the bypass pipe or the fuel gas heating component according to the detection result of the temperature measuring component. This gas heater switches heating circuit through switching valves, can realize the accurate control of temperature.

Description

Gas water heater

Technical Field

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

Background

The existing gas water heater provides heat source through gas, and the minimum temperature rise provided by the existing fire grate under the minimum power is more than 5 ℃, so that the temperature can not be finely controlled, and the deviation of the outlet water temperature provided by the gas water heater and the outlet water temperature required by a user is more than 5 ℃, or the outlet water temperature is higher than the actual required outlet water temperature, or the outlet water temperature is lower than the actual required outlet water temperature, thereby influencing the use experience of the user.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a gas water heater which can solve the problem that the outlet water temperature cannot be finely controlled.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a gas water heater, includes gas heating element, gas heating element is connected with inlet tube and outlet pipe, gas water heater still includes:

the temperature measuring component is used for detecting the water inlet temperature in the water inlet pipe;

one end of the bypass pipe can be communicated with the water inlet pipe, and the other end of the bypass pipe is communicated with the water outlet pipe;

the electric heating assembly is connected in series in the bypass pipe and is used for heating the water in the bypass pipe;

and the switching valve group can selectively conduct the water inlet pipe with the bypass pipe or the fuel gas heating component according to the detection result of the temperature measuring component.

Wherein the power of the electric heating component is adjustable.

The switching valve group comprises a three-way valve, a first valve port and a second valve port of the three-way valve are connected in series in the water inlet pipe along the water inlet direction, and a third valve port of the three-way valve is communicated with the bypass pipe.

The switching valve group comprises a first switch valve and a second switch valve, the first switch valve is connected in series with one end, close to the gas heating assembly, of the water inlet pipe, and the second switch valve is connected in series in the bypass pipe and located on one side, close to the water inlet pipe, of the electric heating assembly.

The switching valve group also comprises a one-way valve, the one-way valve is arranged at one end of the bypass pipe close to the water outlet pipe, and water in the bypass pipe can enter the water outlet pipe through the one-way valve.

Wherein, the gas heater still includes:

and the controller is in communication connection with the temperature measuring assembly and the switching valve group respectively.

Wherein, the gas heater still includes:

and the operation display module is in communication connection with the controller and is used for setting the water outlet temperature.

Wherein, the gas heating assembly includes:

the heat exchanger is respectively connected with the water inlet pipe and the water outlet pipe;

and a hot gas outlet of the combustor is communicated with the gas inlet of the heat exchanger.

The heat exchanger comprises a coil pipe and heat absorbing sheets arranged on the outer wall of the coil pipe.

Wherein, the gas heater still includes the refrigeration subassembly, establish ties in the inlet tube with between the gas heating element.

Has the advantages that: the utility model provides a gas water heater. In the gas water heater, the temperature measuring component can detect the water inlet temperature, and when the difference value between the water inlet temperature and the required water outlet temperature is smaller than the minimum temperature rise of the gas heating component under the minimum power, the heating channel is switched by the switching valve group, so that the water in the water inlet pipe flows out of the water outlet pipe after being heated by the electric heating component, and the accurate control of the water temperature is realized; when the difference between the water inlet temperature and the required water outlet temperature is larger than the minimum temperature of the fuel gas heating assembly under the minimum power, the switching valve group switches the other heating passage, so that the water in the water inlet pipe flows out of the water outlet pipe after being heated by the fuel gas heating assembly, and the use cost is reduced.

Drawings

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

Wherein:

1. a housing; 2. a gas fired heating assembly; 3. a water inlet pipe; 4. a water outlet pipe; 5. an electrical heating assembly; 6. a bypass pipe; 7. and a three-way valve.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1, the embodiment provides a gas water heater, including casing 1 and gas heating element 2 of setting in casing 1, be provided with water inlet and delivery port on casing 1, gas heating element 2 is connected with inlet tube 3 and outlet pipe 4, and outside inlet tube 3 and the water inlet intercommunication or wear out casing 1 by the water inlet, outlet pipe 4 and delivery port intercommunication or the delivery port wears out outside casing 1.

When the gas water heater works, cold water enters from the water inlet pipe 3 and is heated into hot water with required temperature through the gas heating component 2, and then the hot water flows out from the water outlet pipe 4 for users to use.

Specifically, gas heating element 2 includes heat exchanger and combustor, is provided with heating route and heat transfer medium route in the heat exchanger, and inlet tube 3 and outlet pipe 4 are connected respectively to the heating route, have held heat transfer medium in the heat transfer medium route, and the combustor passes through the heat transfer medium in the gas heating heat transfer medium route, and heat transfer medium is through the water heat transfer with the heating route in for the temperature of the water through in the heat exchanger risees.

In this embodiment, the heat exchange medium is hot air, the air inlet of the heat exchange medium passage is communicated with the hot air outlet of the burner, and the air outlet of the heat exchange medium passage is communicated with the outside of the housing 1. The combustor includes combustion chamber and sets up the fire row in the combustion chamber, is provided with the steam outlet on the combustion chamber. After the fire row ignites the gas, heat the air in the combustion chamber and form hot air, hot air gets into in the heat transfer medium route through the steam outlet with the water heat transfer in the heating route. The air cooled after heat exchange is discharged out of the housing 1 through an air outlet on the heat exchange medium passage. The cost of gas heater can be reduced through hot air as heat transfer medium in this embodiment.

In other embodiments, the heat exchange medium may also be a liquid with a high thermal conductivity, and the gas heating assembly 2 may have other structures as long as heat exchange can be achieved.

Optionally, the heat exchanger may be a two-stage heat exchanger or a multi-stage heat exchanger, and the heat exchange efficiency is further improved by two-stage or multi-stage heat exchange, so as to improve the hot water heating efficiency.

Optionally, the heat exchanger comprises a coil and heat absorbing fins arranged on the outer wall of the coil, one end of the coil is connected with the water inlet pipe 3, the other end of the coil is connected with the water outlet pipe 4, and the coil forms a heating passage. Through set up the heat absorbing sheet on the coil pipe outer wall, can increase the heat transfer area of heating route to improve heat exchange efficiency.

Because of there is minimum temperature rise in the use water behind gas heating element 2, and minimum temperature rise is more than 5 degrees, leads to gas heating element 2 can not meticulous controlled temperature, and the temperature of going out water exists the deviation with the actual required leaving water temperature of user easily, and the deviation is more than 5 degrees, influences user's use and experiences.

In order to solve the above problem, the gas water heater in the present embodiment has two heating paths, and for convenience of description, the two heating paths are respectively a first heating path and a second heating path, where the heating path in the heat exchanger in the gas heating assembly 2 is the first heating path. An electric heating component 5 is connected in series in the second heating path, and the water used in the second heating path is heated by the electric heating component 5.

When the inlet water temperature is lower than the outlet water temperature required by a user and the difference between the inlet water temperature and the outlet water temperature is larger than or equal to the minimum temperature rise of the gas heating component 2, cold water entering from the water inlet pipe 3 is heated through the first heating passage and is discharged from the water outlet pipe 4 after being heated. The temperature rise that uses water to heat under this condition is great, heats through gas heating element 2, can reduce the heating cost.

When the inlet water temperature is lower than the outlet water temperature required by the user and the difference between the inlet water temperature and the outlet water temperature is lower than the minimum temperature rise of the gas heating component 2, cold water entering from the water inlet pipe 3 is heated through the second heating passage and is discharged through the water outlet pipe 4 after being heated. Under this kind of condition, the required temperature rise of use water is less, and is less than the minimum temperature rise of gas heating element 2, heats through electric heating element 5, can realize the accurate control of temperature, avoids leaving water temperature and the required leaving water temperature deviation of user great, is favorable to improving user's use and experiences.

Specifically, the gas water heater also comprises a bypass pipe 6 and a switching valve group. One end of the bypass pipe 6 can be communicated with the water inlet pipe 3, and the other end of the bypass pipe 6 is communicated with the water outlet pipe 4; an electric heating assembly 5 is connected in series in the by-pass pipe 6, the electric heating assembly 5 being used to heat the water in the by-pass pipe 6. The bypass pipe 6 forms a second heating path. The switching valve group can selectively conduct the water inlet pipe 3 with the bypass pipe 6 or the gas heating assembly 2 so as to realize the switching of the first heating passage and the second heating passage.

For further improving gas heater's intelligent degree, gas heater still includes temperature measurement subassembly, and temperature measurement subassembly is used for detecting the temperature of intaking in the inlet tube 3, and the heating route can be switched according to temperature measurement subassembly's testing result to the switching valves.

Optionally, the gas water heater further comprises a controller, and the controller is in communication connection with the temperature measuring assembly and the switching valve bank respectively. The temperature measurement subassembly can be sent the temperature of intaking that detects to the controller in, the controller is according to the temperature of intaking that detects and the required leaving water temperature of user, and the switching valve group of control carries out the switching of heating the route to gas heater can be according to user's demand automatically regulated heating methods.

It should be noted that the connection relationship, the specific structure, and the specific control manner between the controller and other components in this embodiment are conventional means in the art, and any connection relationship, specific structure, and specific control manner between the controller and other components in the prior art may be adopted in this embodiment, and the connection relationship, the specific structure, and the specific control manner between the controller and other components are not described in detail in this application.

Optionally, the gas water heater further comprises an operation display module, the operation display module is in communication connection with the controller, and the operation display module is used for setting the outlet water temperature. The user sets for required outlet water temperature through operation display module, and operation display module can send the outlet water temperature that the user set for to the controller synthesizes inlet water temperature and outlet water temperature intelligence and selects the heating route.

Illustratively, the operation display module can comprise a touch display screen, and the touch display screen not only can meet the requirement of inputting the outlet water temperature by a user, but also can display the working parameters of the gas water heater, including but not limited to the inlet water temperature, the set outlet water temperature and the required heating time.

In order to realize the switching of the heating channel, the switching valve group comprises a three-way valve 7, the three-way valve 7 comprises a valve body and a valve core arranged in the valve body, and the valve body is provided with a first valve port, a second valve port and a third valve port. Wherein, the first valve port and the second valve port of the three-way valve 7 are connected in series in the water inlet pipe 3 along the water inlet direction, and the third valve port of the three-way valve 7 is communicated with the bypass pipe 6. When the valve core moves relative to the valve body, the first valve port can be communicated with the second valve port, or the first valve port can be communicated with the third valve port, so that water in the water inlet pipe 3 enters the gas heating assembly 2 to be heated, or water in the water inlet pipe 3 enters the bypass pipe 6 to be heated through the electric heating assembly 5.

The three-way valve 7 is used for controlling the switching of the heating passage, so that the structure of the switching valve group can be simplified, and the cost of the gas water heater is reduced.

In order to facilitate the controller to control the action of the switching valve group, the three-way valve 7 is an electromagnetic valve.

Further, in order to avoid the rivers in the outlet pipe 4 to in the bypass pipe 6, the switching valves still includes the check valve, and the check valve sets up in the one end that is close to outlet pipe 4 of bypass pipe 6, and hydroenergy in the bypass pipe 6 passes through the check valve and gets into in the outlet pipe 4. Through setting up the check valve, can avoid the water refluence to guarantee to use the stability that water flows.

In other embodiments, the switching valve block may replace the three-way valve 7 by two on-off valves. Specifically, the switching valve group comprises a first switch valve and a second switch valve, wherein the first switch valve is connected in series with one end of the water inlet pipe 3 close to the gas water heater, and the second switch valve is connected in series with the bypass pipe 6 and is positioned on one side of the electric heating assembly 5 close to the water inlet pipe 3. The first heating channel and the second heating channel can be switched by matching the first switch valve and the second switch valve.

Further, the power of the electric heating assembly 5 is adjustable. Through the power of adjusting electric heating element 5, can adjust the temperature of water after electric heating element 5 heats to satisfy user's user demand better.

Alternatively, the electric heating assembly 5 may include an electric heating tube that heats the water by being energized, and the heating power of the electric heating tube may be adjusted by adjusting the current of the electric heating tube.

Optionally, the first heating path may also be connected in series with an electric heating element 5, for convenience of description, the electric heating element 5 connected in series in the first heating path is a first heating element, and the electric heating element 5 connected in series in the bypass pipe 6 is a second heating element. In this embodiment, through the cooperation of first heating element and gas heating element 2, can be on the basis that reduces the heating cost, further meticulous temperature control to satisfy user's user demand better.

It is understood that the first heating assembly may be identical in structure to the second heating assembly.

Furthermore, a flow regulating valve is further connected in series in the first heating passage and the second heating passage, the flow in the heating passages can be regulated by setting the flow regulating valve, and the outlet water temperature can be better regulated by combining the power regulation of the gas heating assembly 2, the first heating assembly and the second heating assembly.

Further, the gas water heater also comprises a refrigeration assembly, the refrigeration assembly is connected in series between the water inlet pipe 3 and the gas heating assembly 2, and the refrigeration assembly is used for reducing the temperature of the water used by the refrigeration assembly, so that when the water inlet temperature is higher than the water outlet temperature, the actual water outlet temperature is higher than the water outlet temperature required by a user.

In this embodiment, refrigeration subassembly and controller communication are connected, and the controller can control refrigeration subassembly's power to the temperature of the use water behind the control refrigeration subassembly.

Alternatively, the refrigeration component can adopt a refrigerator, and water entering the refrigerator can be rapidly refrigerated.

The refrigeration assembly comprises a water tank and a semiconductor refrigeration piece, the semiconductor refrigeration piece is arranged on the water tank, a water inlet of the water tank is communicated with the water inlet pipe 3, a water outlet of the water tank is connected with a water inlet of the heat exchanger, and the semiconductor refrigeration piece is electrically connected with the controller. When the water needs to be refrigerated, the semiconductor refrigerating sheet is electrified to refrigerate the water in the water tank, so that the water in the water tank is cooled.

Preferably, in order to accelerate the heat exchange efficiency between the water in the water tank and the semiconductor refrigeration sheets, the water tank is of a flat structure, and the semiconductor refrigeration sheets are respectively arranged on two side walls of the water tank.

In other embodiments, the refrigeration component may also be connected in series in the second heating path, and may also refrigerate water when the inlet water temperature is higher than the set outlet water temperature.

To facilitate understanding of the various operating modes of the gas water heater in this embodiment, the outlet water temperature required by the user is set to T, and the minimum temperature rise of the gas heating assembly 2 during operation is T0, so that the operating process of the gas water heater is as follows:

the temperature measuring component detects the inlet water temperature and transmits the inlet water temperature to the controller; the user inputs the required outlet water temperature through the operation display component, and the operation display component transmits the input outlet water temperature to the controller.

The controller judges the relation between the inlet water temperature and the outlet water temperature according to the inlet water temperature and the required outlet water temperature so as to switch the heating mode.

When the water inlet temperature is higher than the set water outlet temperature T, the controller controls the gas heating component 2, the first heating component and the second heating component not to be started and controls the refrigeration component to be started, and the controller controls the first valve port and the second valve port in the three-way valve 7 to be communicated, so that water entering from the water inlet pipe 3 is cooled to the water outlet temperature through the refrigeration component and then is discharged from the water outlet pipe 4.

When the inlet water temperature is lower than the difference between the outlet water temperature T and the minimum temperature rise T0, the controller controls the gas heating component 2 and the first heating component to be started, the second heating component is not started, and the controller controls the first valve port and the second valve port in the three-way valve 7 to be communicated, so that water entering from the water inlet pipe 3 is heated by the first heating component and the gas heating component 2 and then is discharged from the water outlet pipe 4.

The controller controls the power and the water flow of the first heating assembly, so that the temperature difference between the temperature of the water passing through the first heating assembly and the water outlet temperature T is a multiple of the minimum temperature rise T0, and the purpose of accurately controlling the water outlet temperature is achieved.

When the inlet water temperature is lower than the outlet water temperature T and the temperature difference between the inlet water temperature and the outlet water temperature T is lower than the minimum temperature rise T0, the controller controls the gas heating assembly 2 and the first heating assembly not to be started, the second heating assembly is started, and the controller controls the first valve port and the third valve port in the three-way valve 7 to be communicated, so that the water entering from the water inlet pipe 3 is heated by the second heating assembly and then is discharged from the water outlet pipe 4.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. The utility model provides a gas water heater, includes gas heating element (2), gas heating element (2) are connected with inlet tube (3) and outlet pipe (4), its characterized in that, gas water heater still includes:

the temperature measuring component is used for detecting the inlet water temperature in the water inlet pipe (3);

one end of the bypass pipe (6) can be communicated with the water inlet pipe (3), and the other end of the bypass pipe (6) is communicated with the water outlet pipe (4);

the electric heating assembly (5) is connected in series in the bypass pipe (6), and the electric heating assembly (5) is used for heating water in the bypass pipe (6);

and the switching valve group can selectively conduct the water inlet pipe (3) with the bypass pipe (6) or the gas heating component (2) according to the detection result of the temperature measuring component.

2. Gas water heater according to claim 1, characterized in that the power of the electric heating assembly (5) is adjustable.

3. Gas water heater according to claim 1, characterized in that the switching valve group comprises a three-way valve (7), the first and second ports of the three-way valve (7) being connected in series in the water inlet pipe (3) in the water inlet direction, the third port of the three-way valve (7) being in communication with the by-pass pipe (6).

4. Gas water heater according to claim 1, characterized in that said switching group of valves comprises a first on-off valve connected in series to the end of the inlet pipe (3) close to the gas heating assembly (2) and a second on-off valve connected in series to the bypass pipe (6) on the side of the electric heating assembly (5) close to the inlet pipe (3).

5. Gas water heater according to claim 3 or 4, characterized in that the switching valve group further comprises a one-way valve arranged at the end of the by-pass pipe (6) close to the outlet pipe (4), through which the water inside the by-pass pipe (6) can enter the outlet pipe (4).

6. The gas water heater of any one of claims 1-4, further comprising:

7. The gas water heater of claim 6, further comprising:

8. Gas water heater according to any one of claims 1-4, characterized in that the gas heating assembly (2) comprises:

the heat exchanger is respectively connected with the water inlet pipe (3) and the water outlet pipe (4);

9. The gas water heater of claim 8, wherein said heat exchanger includes a coil and heat absorbing fins disposed on an outer wall of said coil.

10. Gas water heater according to any one of claims 1-4, characterized in that it further comprises a refrigerating assembly, connected in series between the water inlet pipe (3) and the gas heating assembly (2).