CN221324691U - Gas heating device - Google Patents

Abstract

The utility model discloses a gas heating device, which comprises a heating component; a plate heat exchanger; a water storage tank; and, zero cold water return line; the heating assembly is communicated with the heating end of the plate heat exchanger to form a heating circulating water path, the water inlet of the heating end of the plate heat exchanger is communicated with a tap water inlet, the water outlet of the heating end of the plate heat exchanger is communicated with the water inlet of the water storage tank, and the water outlet of the water storage tank is communicated with a hot water end; one end of the zero cold water return pipe is communicated with the hot water end, and the other end of the zero cold water return pipe is communicated with the tap water inlet. When a user uses hot water, cold water in an external pipeline at the hot water end can be circulated to a tap water inlet through a zero cold water return pipe, so that the pipeline is filled with hot water, and the time for the user to wait for the hot water is reduced; through setting up the water storage tank, the water storage tank can be with the neutralization of the high temperature water that produces because of the temperature rise of cutting off water when opening hot water valve for the second time to realize quick constant temperature hot water supply, be favorable to improving user's use experience and feel.

Description

Gas heating device

Technical Field

The utility model belongs to the technical field of household appliances, and particularly relates to a gas heating device.

Background

Currently, gas heating systems mainly include waterway systems (pipes, valves, and elbows), heat-dissipating systems (fins, etc.), and heat sources (gas heating furnaces). The gas heating stove is a common device for heating in winter in cold areas, and has an inner circulation waterway for heating and an outer circulation waterway for domestic water, namely, the gas heating stove has the functions of heating and supplying domestic hot water. The fuel gas of the fuel gas heating furnace is output through the burner, after being combusted in the combustion chamber, the heat is absorbed by the heat exchanger, and the internal circulation waterway is heated in a reciprocating way when passing through the heat exchanger, so that the heat is continuously output to the radiator to provide a heat source; the external circulation waterway is heated by the heat exchanger to provide hot water for life. In the actual use process, the external pipeline is too long, so that the waiting time of hot water is longer.

The prior Chinese patent with the bulletin number of CN210861700U discloses a zero cold water gas wall-hanging stove system, which comprises a gas wall-hanging stove, a circulating water pump, a cold water pipe and a hot water pipe, wherein the gas wall-hanging stove comprises a plate heat exchanger, a water outlet of the cold water pipe is respectively connected with a cold water valve and a cold water inlet of the plate heat exchanger, a hot water outlet of the plate heat exchanger is connected with a water inlet of the circulating pump, a water outlet of the circulating pump is connected with the hot water valve, and a one-way valve for enabling the hot water pipe to flow to the cold water pipe is arranged between a connecting end of the hot water pipe and a connecting end of the cold water pipe.

When the zero cold water gas wall-hanging stove system is used, the circulating water pump pumps cold water into the plate heat exchanger in the gas wall-hanging stove for heating. When the user opens the hot water valve, the hot water with constant temperature flows out of the hot water pipe, and the hot water can be rapidly output. However, because the residual heat generated by combustion of the gas wall-mounted boiler can cause the water cut-off and the temperature rise to be larger when the hot water valve is opened for the second time, accidents such as scalding and the like are easy to occur to users, and the experience of the users is poor. In view of this, how to design a gas heating technology capable of quickly heating water at constant temperature is a technical problem to be solved by the utility model.

Disclosure of Invention

The utility model provides a gas heating device which can realize rapid constant-temperature hot water output and improve user experience.

In order to achieve the technical purpose, the utility model is realized by adopting the following technical scheme:

In one aspect, the present utility model provides a gas heating apparatus comprising:

A heating assembly;

A plate heat exchanger;

a water storage tank; and, a step of, in the first embodiment,

Zero cold water return pipe;

The water inlet of the heated end of the plate heat exchanger is communicated with a tap water inlet through a first pipeline, the water outlet of the heated end of the plate heat exchanger is communicated with the water inlet of a water storage tank through a second pipeline, and the water outlet of the water storage tank is communicated with a hot water utilization end through a third pipeline; one end of the zero cold water return pipe is communicated with the hot water utilization end, and the other end of the zero cold water return pipe is communicated with the tap water inlet.

In some embodiments of the present application, the first pipeline is provided with a water flow sensor and a first temperature sensor, the second pipeline is provided with a domestic water circulating pump, and the third pipeline is provided with a second temperature sensor.

In some embodiments of the application, the gas heating apparatus further comprises:

The first switch valve is arranged on the zero cold water return pipe and used for controlling the on-off of the zero cold water return pipe.

In some embodiments of the application, the gas heating apparatus further comprises:

And one end of the fourth pipeline is communicated with the tap water inlet, and the other end of the fourth pipeline is communicated between the third pipeline and the hot water utilization end.

In some embodiments of the application, the gas heating apparatus further comprises:

the second switch valve is arranged on the fourth pipeline and used for controlling the on-off of the fourth pipeline.

In some embodiments of the application, the heating assembly comprises:

A housing having a combustion chamber formed therein;

The burner is arranged in the combustion chamber, is communicated with the gas supply pipe and is used for burning gas; and, a step of, in the first embodiment,

The heat exchanger is arranged in the combustion chamber and is positioned above the burner, a water outlet pipe of the heat exchanger is communicated with a water inlet of a heat supply end of the plate heat exchanger through a fifth pipeline, and a water inlet pipe of the heat exchanger is communicated with a water outlet of the heat supply end of the plate heat exchanger through a sixth pipeline.

In some embodiments of the application, the heating assembly further comprises:

A heating water supply pipe; and, a step of, in the first embodiment,

A heating return pipe;

Wherein the heating water supply pipe, the water outlet pipe and the fifth pipeline are communicated through a first three-way valve; the heating return pipe, the water inlet pipe and the sixth pipeline are communicated through a second three-way valve.

In some embodiments of the application, a heating circulation pump is provided on the inlet pipe, the heating circulation pump being configured to power the flow of water in the inlet pipe.

In some embodiments of the application, an expansion tank is also provided on the inlet conduit, the expansion tank being configured to equalize the internal pressure of the heating assembly.

In some embodiments of the application, a smoke exhaust pipe is arranged at the top of the shell, and the heating assembly further comprises:

The air inlet of the fan is communicated with the combustion chamber, and the air outlet of the fan is communicated with the smoke exhaust pipe.

Compared with the prior art, the utility model has the advantages and positive effects that: by arranging the heating assembly, the plate heat exchanger, the water storage tank and the zero cold water return pipe, one end of the zero cold water return pipe is communicated with the hot water use end, and the other end of the zero cold water return pipe is communicated with the tap water inlet, so that when a user uses hot water, cold water in an external pipeline of the hot water use end can be circulated to the tap water inlet through the zero cold water return pipe, the pipeline is filled with hot water, and the time for the user to wait for hot water is reduced;

meanwhile, the heating assembly is communicated with the heating end of the plate heat exchanger to form a heating circulation waterway, the water inlet of the heated end of the plate heat exchanger is communicated with the tap water inlet through a first pipeline, the water outlet of the heated end of the plate heat exchanger is communicated with the water inlet of the water storage tank through a second pipeline, and the water outlet of the water storage tank is communicated with the hot water end through a third pipeline.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic view of a part of a gas heating device according to the present utility model;

fig. 2 is a schematic diagram of the overall structure of another gas heating device provided by the utility model;

FIG. 3 is a schematic diagram of the overall structure of another gas heating device according to the present utility model;

Fig. 4 is a schematic diagram of the overall structure of another gas heating device provided by the utility model;

fig. 5 is a schematic diagram of the overall structure of another gas heating device provided by the utility model.

Reference numerals illustrate:

The heating assembly 1, the shell 11, the combustion chamber 111, the burner 12, the heat exchanger 13, the water outlet pipe 131, the water inlet pipe 132, the heating circulating pump 1321, the expansion tank 1322, the smoke exhaust pipe 14, the fan 15 and the air inlet pipe 16;

A plate heat exchanger 2, a heat supply end 21 and a heat receiving end 22;

A water storage tank 3;

A zero cold water return pipe 4, a first switch valve 41, a zero cold water outlet 42 and a zero cold water return port 43;

a hot water end 5 and a hot water end water inlet 51;

a tap water inlet 6;

A first pipe 7, a first temperature sensor 71, and a water flow sensor 72;

A second pipeline 8 and a domestic water circulating pump 81;

A third pipe 9, a second temperature sensor 91;

a fourth pipeline 10 and a second switch valve 101;

A fifth line 20;

A sixth conduit 30;

A heating water supply pipe 40;

A heating return pipe 50;

A first three-way valve 60;

And a second three-way valve 70.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, in the description of the present utility model, terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

As shown in fig. 1 to 5, according to an embodiment of the present application, there is provided a gas heating apparatus including a heating assembly 1, a plate heat exchanger 213, a water storage tank 3, and a zero cold water return pipe 4.

Wherein, the heating assembly 1 is communicated with the heating end 21 of the plate heat exchanger 213 to form a heating circulation water path, the water inlet of the heating end 22 of the plate heat exchanger 213 is communicated with the tap water inlet 6 through the first pipeline 7, the water outlet of the heating end 22 of the plate heat exchanger 213 is communicated with the water inlet of the water storage tank 3 through the second pipeline 8, and the water outlet of the water storage tank 3 is communicated with the hot water end 5 through the third pipeline 9; one end of the zero cold water return pipe 4 is communicated with the hot water end 5, and the other end of the zero cold water return pipe 4 is communicated with the tap water inlet 6.

Specifically, by arranging the plate heat exchanger 213, the water storage tank 3 and the zero cold water return pipe 4, the heating component 1 provides a heat source, the heating component 1 indirectly heats cold water from the tap water inlet 6 through the plate heat exchanger 213, the hot water is conveyed into the water storage tank 3 for storage, so that the water supply rate of hot water can be improved, the water storage tank 3 can neutralize high-temperature water generated by water cut-off and temperature rise, and the generation of high-temperature water by secondary boiled water is avoided; the zero cold water return pipe 4 can circulate cold water in the pipeline outside the hot water end 5 to the tap water inlet 6, so that the time for a user to wait for hot water can be reduced.

Specifically, through setting up heating subassembly 1, plate heat exchanger 213, water storage tank 3 and zero cold water wet return 4, the one end of zero cold water wet return 4 communicates with hot water end 5, the other end and the running water import 6 intercommunication of zero cold water wet return 4, like this, when using hot water, the user can circulate to running water import 6 through zero cold water wet return 4 with the cold water in the external pipeline of hot water end 5 and use, thereby use the external pipeline of hot water end 5 to be full of hot water, reduce the user and wait for the time of hot water, be favorable to the water economy resource, avoid cold water extravagant.

The heating assembly 1 is communicated with the heat supply end 21 of the plate heat exchanger 213 to form a heat supply circulating water path, the water inlet of the heat receiving end 22 of the plate heat exchanger 213 is communicated with the tap water inlet 6 through the first pipeline 7, and the water outlet of the heat receiving end 22 of the plate heat exchanger 213 is communicated with the water inlet of the water storage tank 3 through the second pipeline 8, so that cold water enters the plate heat exchanger 213 through the first pipeline 7, is heated in the plate heat exchanger 213, and is conveyed to the water storage tank 3 for storage through the second pipeline 8.

And the delivery port of water storage tank 3 is through third pipeline 9 and with hot water end 5 intercommunication, is for providing hot water with hot water end 5 through water storage tank 3 promptly, through setting up water storage tank 3, and water storage tank 3 can be with the secondary when opening hot water valve because the high temperature water that water supply temperature rise produced is neutralized, and water storage tank 3 plays the effect of storing hot water, buffering neutralization high temperature water between user side and heating subassembly 1 to realize quick constant temperature hot water supply, avoid the user to take place unexpected situations such as scald, be favorable to improving user's use experience and feel.

Specifically, the hot water end 5 can be a shower, a kitchen tap, a bathroom tap and the like.

The plate heat exchanger 213 is formed by stacking corrugated metal sheets, has high heat exchange efficiency, and is divided into a detachable plate heat exchanger, a welded heat exchanger, a spiral plate heat exchanger and a coiled plate heat exchanger according to different structures. The plate heat exchanger 213 has the advantages of high heat exchange efficiency, small occupied area, low price, convenient maintenance and the like. In the plate heat exchanger 213 of the present application, the water inlet of the heat supply end 21 and the water outlet of the heat supply end 21 are in a diagonal form, and the water inlet of the heat receiving end 22 and the water outlet of the heat receiving end 22 are in a diagonal form. Therefore, the heat exchange path can be prolonged, and the heat exchange efficiency is improved.

Specifically, the heat insulation material is arranged outside the water storage tank 3, so that heat dissipation of the water storage tank 3 can be reduced.

In some embodiments of the application, as shown in connection with fig. 2, a water flow sensor 72 and a first temperature sensor 71 are provided on the first pipe 7, a domestic water circulation pump 81 is provided on the second pipe 8, and a second temperature sensor 91 is provided on the third pipe 9.

Specifically, by providing the water flow sensor 72 on the first pipe 7, it is convenient to measure the flow rate of water in the first pipe 7; by providing the first temperature sensor 71 on the first pipe 7, it is thus facilitated to measure the water temperature in the first pipe 7, i.e. for measuring the inlet water temperature of the water storage tank 3; by providing the second temperature sensor 91 on the third pipe 9, the second temperature sensor 91 is used for measuring the water temperature on the third pipe 9, i.e. for measuring the outlet water temperature of the water storage tank 3; in this way, it is convenient to control the operation of the heating assembly 1 according to the temperature difference of the water measured by the first temperature sensor 71 and the second temperature sensor 91;

When the temperature difference of the water temperatures measured by the first temperature sensor 71 and the second temperature sensor 91 is within a set range, the controller of the gas heating apparatus controls the heating assembly 1 to stop operating; when the temperature difference of the water temperatures measured by the first temperature sensor 71 and the second temperature sensor 91 exceeds a set range, the controller of the gas heating apparatus controls the heating assembly 1 to operate;

By arranging the domestic water circulating pump 81 on the second pipeline 8, the domestic water circulating pump 81 is positioned between the water inlet end of the water storage tank 3 and the plate heat exchanger 213, and provides power for conveying hot water to the water storage tank 3.

In other embodiments of the present application, the gas heating apparatus further includes a first switching valve 41.

The first switch valve 41 is disposed on the zero-cold water return pipe 4, and is used for controlling on-off of the zero-cold water return pipe 4.

Specifically, by arranging the first switch valve 41 on the zero cold water return pipe 4, the first switch valve 41 can be a mechanical valve or an electromagnetic valve, and of course, can also be other types of valves; the zero cold water return pipe 4 is communicated with the tap water inlet 6 and the hot water use end 5, and cold water return in an external pipeline of the hot water use end 5 is conveniently controlled by arranging the first switch valve 41.

In some embodiments of the present application, the gas heating apparatus further includes a fourth pipe 10.

One end of the fourth pipeline 10 is communicated with the tap water inlet 6, and the other end is communicated between the third pipeline 9 and the hot water utilization end 5.

Specifically, by providing the fourth pipeline 10, one end of the fourth pipeline 10 is communicated with the tap water inlet 6, and the other end is communicated between the third pipeline 9 and the hot water use end 5, so that the first pipeline 7, the plate heat exchanger 213, the second pipeline 8, the water storage tank 3, the third pipeline 9 and the fourth pipeline 10 are communicated to form an internal circulation waterway mode.

In some embodiments of the present application, the gas heating apparatus further includes a second switching valve 101.

The second switching valve 101 is disposed in the fourth pipeline 10, and is used for controlling on/off of the fourth pipeline 10.

Specifically, by providing the second switch valve 101 on the fourth pipeline 10, the second switch valve 101 may be a mechanical valve or an electromagnetic valve, and of course, may be other types of valves; the second switch valve 101 is arranged to control the on-off of the fourth pipeline 10, so as to control the on-off of the internal circulation waterway.

In some embodiments of the present application, as shown in fig. 3, the arrow indicates the water flow direction, the preheating mode of the internal circulation water path works on the principle that, after the internal circulation is started, the first switch valve 41 on the zero cold water return pipe 4 is in a closed state, the second switch valve 101 and the domestic water circulation pump 81 are opened, the internal circulation water path is opened, the water in the internal circulation water path is heated after passing through the plate heat exchanger 213, the hot water is conveyed into the water storage tank 3 for storage, the first temperature sensor 71 and the second temperature sensor 91 detect the water temperatures in the first pipeline 7 and the third pipeline 9 respectively, and when the temperature difference of the water temperatures in the first pipeline 7 and the third pipeline 9 is in a set range, the heating assembly 1 is controlled to stop heating; when the temperature difference of the water temperatures in the first pipeline 7 and the third pipeline 9 exceeds a set range, the heating assembly 1 is controlled to continue heating; thus, the water in the water storage tank 3 is always at the set temperature.

By starting the internal circulation mode, the surplus heat generated by the combustion of the heating assembly 1 can be absorbed, and the generated high-temperature water is neutralized in the water storage tank 3, so that the local water temperature is prevented from being too high. The internal circulation mode can be independently turned on, and the waiting time of hot water can be shortened under the condition that zero cold water is not used.

In some embodiments of the present application, the gas heating device further has a pressurizing mode, and when the water flow sensor 72 detects that the water flow is too small, by starting the domestic water circulation pump 81, the pressure of the water flow is increased and the water flow amount is increased under the action of the domestic water circulation pump 81, so that the bathing experience of the user is improved.

In other embodiments of the present application, the gas heating apparatus further has an external circulation zero cold water mode:

Specifically, the second on-off valve 101 is closed, the first on-off valve 41 and the domestic water circulation pump 81 are opened, and at this time, an external circulation zero cold water mode is formed among the first pipeline 7, the plate heat exchanger 213, the second pipeline 8, the water storage tank 3, the third pipeline 9, the hot water use end 5, and the zero cold water return pipe 4.

In conjunction with the illustration of fig. 4, the arrows in the figure indicate the water flow direction, and the working process of the external circulation zero cold water mode is as follows:

When the zero cold water mode is started, the second switch valve 101 on the fourth pipeline 10 is closed, the first switch valve 41 on the zero cold water return pipe 4 is opened, the domestic water circulating pump 81 is operated, cold water in the external pipeline from the hot water utilization end 5 enters the zero cold water return pipe 4 from the zero cold water return port 43 under the pumping force of the domestic water circulating pump 81, cold water enters the first pipeline 7 due to the fact that the zero cold water return pipe 4 is communicated with the first pipeline 7 at the tap water inlet 6, flows through the water flow sensor 72 through a specific flow passage, then enters the plate heat exchanger 213 through the first pipeline 7 to be heated, heated water enters the water storage tank 3 through the second pipeline 8 and is discharged to the third pipeline 9 through the water storage tank 3, after the water flows out from the third pipeline 9, the cold water enters the zero cold water return pipe 4 through the zero cold water return port 43, the zero cold water 42 of the zero cold water return pipe 4 is communicated with the tap water inlet 6, and after the water outlet temperature of the water storage tank 3 measured by the second temperature sensor 91 and the temperature of the water inlet plate heat exchanger 213 are set, the water circulation component entering the water storage tank 213 is stopped after the water storage tank 3 reaches the set temperature, and the water circulation heating is stopped, and a period of time is delayed, and the heating is achieved, and the heating is stopped, and the circulation of the circulation is 81 is achieved.

By delaying the life water circulation pump 81 for a period of time and stopping the rotation, it is possible to avoid excessive water cut-off and temperature rise.

At that time, the user can also adopt an instant heating mode when using, and the arrow in the figure indicates the trend of water flow in combination with the illustration of fig. 5, and the working process of the instant heating mode is as follows: when the instant heating mode is started, the first switch valve 41 on the zero cold water return pipe 4 is closed, the second switch valve 101 on the fourth pipeline 10 is closed, the domestic water circulating pump 81 is started, cold water from the tap water inlet 6 enters the first pipeline 7, flows through the water flow sensor 72 through a specific flow passage, then enters the plate heat exchanger 213 for heating through the first pipeline 7, the heated water enters the water storage tank 3 through the second pipeline 8, then is discharged to the third pipeline 9 through the water storage tank 3, and hot water flowing out of the third pipeline 9 is sent to the hot water end 5 through the hot water end water inlet 51 for use by a user.

Illustratively, the tap water inlet 6, the zero cold water return pipe 4, the first pipeline 7 and the fourth pipeline 10 can be connected through four-way valves.

The third pipe 9, the fourth pipe 10 and the hot water end 5 may be connected by a tee.

In some embodiments of the application, the heating assembly 1 may be a gas heating furnace or other form of heating equipment. In the following, a gas heating furnace is described as an example, and includes a housing 11, a burner 12, and a heat exchanger 13.

The housing 11 has a combustion chamber 111 formed therein;

The burner 12 is arranged in the combustion chamber 111 and is positioned at the bottom of the combustion chamber 111, an air inlet is arranged on the burner 12, the air inlet of the burner 12 is communicated with a gas supply pipe for burning gas, wherein the gas supply pipe extends into the combustion chamber 111, a plurality of nozzles are arranged on the gas supply pipe, and the nozzles jet and convey the gas to the burner 12 through the air inlet;

The heat exchanger 13 is disposed in the combustion chamber 111 and above the burner 12, and the water outlet pipe 131 of the heat exchanger 13 is connected to the water inlet of the heat supply end 21 of the plate heat exchanger 213 through the fifth pipeline 20, and the water inlet pipe 132 of the heat exchanger 13 is connected to the water outlet of the heat supply end 21 of the plate heat exchanger 213 through the sixth pipeline 30.

Specifically, by arranging the combustion chamber 111 and the heat exchanger 13 in the housing 11, the burner 12 is arranged in the burner 12, the burner 12 is used for burning fuel gas to provide heat for the combustion chamber 111, the heat exchanger 13 is arranged in the combustion chamber 111 and is positioned above the burner 12, water is introduced into the pipe of the heat exchanger 13, the water in the pipe of the heat exchanger 13 is subjected to heat exchange in the combustion chamber 111 and is heated, the water inlet of the heat exchanger 13 is communicated with the water inlet of the heat supply end 21 of the plate heat exchanger 213 through the fifth pipeline 20, the water outlet of the heat exchanger 13 is communicated with the water outlet of the heat supply end 21 of the plate heat exchanger 213 through the sixth pipeline 30, and thus, the hot water in the pipe of the heat exchanger 13 is subjected to heat exchange at the plate heat exchanger 213 to form the heat supply end 21 of the plate heat exchanger 213.

In an embodiment of the present application, the heating assembly 1 further includes a heating water supply pipe 40 and a heating water return pipe 50.

Wherein the heating water supply pipe 40, the water outlet pipe 131 and the fifth pipeline 20 are communicated through the first three-way valve 60; the heating return pipe 50, the water inlet pipe 132 and the sixth pipe 30 are connected through the second three-way valve 70.

By arranging the heating water supply pipe 40 and the heating water return pipe 50, the heating furnace also has the heating function, and various demands of people are met; specifically, the heating water supply pipe 40, the water outlet pipe 131 and the fifth pipeline 20 are communicated through the first three-way valve 60; the heating return pipe 50, the inlet pipe 132 and the sixth pipe 30 are connected through the second three-way valve 70 such that a parallel relationship is formed between the plate heat exchanger 213 and the heating water flow, both of which perform heating hot water through the heat exchanger 13.

In other embodiments of the present application, as shown in connection with fig. 2, a heating circulation pump 1321 is provided on the water inlet pipe 132.

Specifically, by providing the heating circulation pump 1321 at the water intake pipe 132, the heating circulation pump 1321 provides power support for the water circulation flow in the heat exchanger 13.

In some embodiments of the present application, an expansion tank 1322 is also provided on the inlet pipe 132.

Specifically, the expansion tank 1322 is arranged on the water inlet pipe 132, and the expansion tank 1322 is used for pressure relief so as to keep the pressure in the heating system in a normal state, thereby ensuring the normal operation of the heating furnace.

Because the water in the heating system is easy to generate expansion with heat and contraction with cold, under the condition of increasing the water temperature, the water quantity in the heating system can be increased, so that expansion is generated, the water pressure in the heating system is increased, and when the water is cooled, the volume of the water can be reduced, so that the heating system is influenced to a certain extent. The expansion tank 1322 is to accommodate such excessive water expansion, reduce the water pressure, and thus improve the operation efficiency of the heating system.

When water leakage or temperature reduction occurs in the heating system, the water level in the expansion tank 1322 is reduced, so that water in the expansion tank 1322 automatically enters the heating system. Meanwhile, a part of air is generated when the water is heated, and the expansion tank 1322 discharges the air, so that heating efficiency is increased, and safety and stability of a heating system are ensured.

In some embodiments of the present application, the top of the housing 11 is provided with a smoke exhaust pipe 14 and an air inlet pipe 16, and the heating assembly 1 further includes a blower 15.

The air inlet of the fan 15 is communicated with the combustion chamber 111, the air outlet of the fan 15 is communicated with the smoke exhaust pipe 14, and the smoke exhaust pipe 14 passes through the air inlet pipe 16.

Specifically, by arranging the smoke exhaust pipe 14 and the air inlet pipe 16 on the top of the shell 11, the smoke exhaust pipe 14 passes through the air inlet pipe 16, so that not only is the occupied space saved, but also the air passing through the air inlet pipe 16 can be heated by the smoke exhaust pipe 14, the waste heat of the smoke exhaust pipe 14 is conveniently and fully utilized, and the resources are saved; by communicating the air inlet of the blower 15 with the combustion chamber 111, the air outlet of the blower 15 is communicated with the smoke exhaust pipe 14, so that the blower 15 can exhaust the smoke generated in the combustion chamber 111.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. A gas heating apparatus, comprising:

A heating assembly;

A plate heat exchanger;

a water storage tank; and, a step of, in the first embodiment,

Zero cold water return pipe;

The water inlet of the heated end of the plate heat exchanger is communicated with a tap water inlet through a first pipeline, the water outlet of the heated end of the plate heat exchanger is communicated with the water inlet of a water storage tank through a second pipeline, and the water outlet of the water storage tank is communicated with a hot water utilization end through a third pipeline; one end of the zero cold water return pipe is communicated with the hot water utilization end, and the other end of the zero cold water return pipe is communicated with the tap water inlet.

2. The gas heating apparatus according to claim 1, wherein a water flow sensor and a first temperature sensor are provided on the first pipe, a domestic water circulation pump is provided on the second pipe, and a second temperature sensor is provided on the third pipe.

3. The gas heating apparatus according to claim 2, further comprising:

The first switch valve is arranged on the zero cold water return pipe and used for controlling the on-off of the zero cold water return pipe.

4. The gas heating apparatus according to claim 1, further comprising:

And one end of the fourth pipeline is communicated with the tap water inlet, and the other end of the fourth pipeline is communicated between the third pipeline and the hot water utilization end.

5. The gas heating apparatus of claim 4, further comprising:

the second switch valve is arranged on the fourth pipeline and used for controlling the on-off of the fourth pipeline.

6. The gas heating apparatus according to any one of claims 1 to 5, wherein the heating assembly comprises:

A housing having a combustion chamber formed therein;

The burner is arranged in the combustion chamber, is communicated with the gas supply pipe and is used for burning gas; and, a step of, in the first embodiment,

The heat exchanger is arranged in the combustion chamber and is positioned above the burner, a water outlet pipe of the heat exchanger is communicated with a water inlet of a heat supply end of the plate heat exchanger through a fifth pipeline, and a water inlet pipe of the heat exchanger is communicated with a water outlet of the heat supply end of the plate heat exchanger through a sixth pipeline.

7. The gas heating apparatus of claim 6, wherein the heating assembly further comprises:

A heating water supply pipe; and, a step of, in the first embodiment,

A heating return pipe;

Wherein the heating water supply pipe, the water outlet pipe and the fifth pipeline are communicated through a first three-way valve; the heating return pipe, the water inlet pipe and the sixth pipeline are communicated through a second three-way valve.

8. The gas heating apparatus of claim 7, wherein a heating circulation pump is provided on the water inlet pipe, the heating circulation pump being configured to power the flow of water in the water inlet pipe.

9. The gas heating apparatus of claim 8, wherein the water inlet pipe is further provided with an expansion tank configured to balance an internal pressure of the heating assembly.

10. The gas heating apparatus of claim 6, wherein a smoke exhaust pipe is provided at a top of the housing, and the heating assembly further comprises:

The air inlet of the fan is communicated with the combustion chamber, and the air outlet of the fan is communicated with the smoke exhaust pipe.