CN219607198U

CN219607198U - Heating equipment

Info

Publication number: CN219607198U
Application number: CN202320691150.6U
Authority: CN
Inventors: 卢宇凡; 袁金魁; 梁友新; 张家强
Original assignee: Guangdong Wanhe Thermal Energy Technology Co Ltd
Current assignee: Guangdong Wanhe Thermal Energy Technology Co Ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-08-29
Anticipated expiration: 2033-03-31

Abstract

The utility model belongs to the technical field of heat supply, and particularly discloses heating equipment. The heating equipment comprises an electric heating component and a communication valve group; the electric heating assembly comprises an electric heating pipeline and an electric heating mechanism, the electric heating pipeline is connected with a local pipeline of the heating return pipe in parallel, the water outlet end of the electric heating pipeline can be communicated with the water inlet end of the main heat exchanger, and the electric heating mechanism is used for heating water flowing through the electric heating pipeline; the communication valve group can switch on or off the local pipeline and the electric heating pipeline. According to the heating equipment disclosed by the utility model, the parallel electric heating pipelines can avoid increasing the water flow pressure of the heating return pipe when the electric heating function is not started, so that the heating water flow is ensured to meet the use requirement of a user, and the main heat exchanger heats the heating water heated by the electric heating mechanism for the second time, so that the heating water can be heated up quickly, and the user experience is improved.

Description

Heating equipment

Technical Field

The utility model relates to the technical field of heat supply, in particular to heating equipment.

Background

The gas heating stove is a hot water boiler which heats water to a certain temperature by using gas combustion and realizes heating requirements through a heating pipeline and a radiator. The gas heating stove has a powerful central heating function, can meet the heating requirement of multiple rooms, can independently close and heat a certain room according to the use requirement, can provide large-flow constant-temperature hot water while heating, and is used in places such as bath, kitchen and the like, and is economical and practical.

However, in the case of insufficient fuel gas supply in heating peak periods of certain areas, large fluctuation of early and late energy supply often occurs, so that the fuel gas heating furnace with single energy source cannot work normally. The heating furnace can not only cause the abnormal heating of the user, but also cause the abnormal work of the antifreezing function of the heating furnace when serious. Therefore, the existing partial gas heating furnace adopts an electric auxiliary heating mode to solve the problems, and the electric heater is directly connected in series on the water pipe.

Because the water inlet pipe and the water outlet pipe of the electric heater are thinner in pipe diameter, the flow rate of hot water is small, and when the electric heater is not used for auxiliary heating, the water path resistance can be increased, so that the flow rate of the water outlet is influenced.

Disclosure of Invention

The utility model aims to provide heating equipment, wherein the parallel electric heating pipelines can avoid increasing the water flow pressure of a heating return pipe when the electric heating function is not started, so that the heat efficiency is improved, the temperature is quickly increased, and the heating water flow is ensured to meet the use requirement of a user.

The technical problems are solved by the following technical scheme:

the utility model provides a heating equipment, includes main heat exchanger, connect in the heating wet return of main heat exchanger water inlet and connect in the heating outlet pipe of main heat exchanger water outlet, heating equipment still includes:

the electric heating assembly comprises an electric heating pipeline and an electric heating mechanism, the electric heating pipeline is connected with a local pipeline of the heating return pipe in parallel, the water outlet end of the electric heating pipeline can be communicated with the water inlet end of the main heat exchanger, and the electric heating mechanism is used for heating water flowing through the electric heating pipeline;

the communication valve group can be used for switching on or off the local pipeline and the electric heating pipeline.

Compared with the background technology, the heating equipment provided by the utility model has the beneficial effects that: the electric heating pipeline of the heating equipment is connected in parallel with the local pipeline of the heating return pipe, when the fuel gas supply of the combustion heat exchange assembly is insufficient, the heating water can not be heated up quickly by the heat generated by the fuel gas combustion, at the moment, the electric heating pipeline can be conducted, so that the heating water can enter the electric heating pipeline through the heating return pipe, and the heating water flowing through the electric heating pipeline is heated through the electric heating mechanism. When the electric heating mechanism is not needed, all heating water only flows through the main heat exchanger through the heating return pipe, so that the waterway resistance in the heating return pipe is not increased, and the normal circulating flow of the heating water is ensured; the heating water which flows through the electric heating pipeline and is subjected to primary heating flows into the main heat exchanger for secondary heating, so that the heating water can be heated up quickly, the overall heat efficiency of heating equipment is improved, and the heating water flow is ensured to meet the use requirement of a user; the communication valve group can switch on or close the local pipeline and the electric heating pipeline, so that a user can selectively distribute the flow of heating water in different heating modes according to use requirements, and the problem that the use of the user is influenced due to the fact that heating equipment with single energy source is insufficient in fuel gas and cannot guarantee the flow of heating water is solved.

In one embodiment, the communication valve group comprises at least two-way valves, and at least one two-way valve is respectively arranged on the local pipeline and the electric heating pipeline.

In one embodiment, the communication valve group comprises at least one three-way valve, and the three-way valve is arranged at the joint of the heating return pipe and the electric heating pipeline.

In one embodiment, the communication valve group comprises a three-way valve, the three-way valve is provided with a water inlet, a first water outlet and a second water outlet, the water inlet and the first water outlet are connected with the heating return pipe, and the water inlet end of the electric heating pipeline is connected with the second water outlet.

In one embodiment, the communication valve group comprises a three-way valve, the three-way valve is provided with a water inlet, a first water outlet and a second water outlet, the water inlet and the first water outlet are connected with the heating return pipe, and the water outlet end of the electric heating pipeline is connected with the second water outlet.

In one embodiment, the communication valve group further comprises a proportional valve, and the proportional valve is arranged on the local pipeline or the electric heating pipeline.

In one embodiment, the heating return pipe is provided with a first interface and a second interface, the water inlet end of the electric heating pipeline is communicated with the first interface, and the water outlet end of the electric heating pipeline is communicated with the second interface.

In one embodiment, the heating device further comprises a water outlet temperature sensor, the water outlet temperature sensor is arranged on the heating water outlet pipe, the heating device further comprises a controller, the water outlet temperature sensor, the electric heating mechanism and the communication valve group are electrically connected with the controller, and the controller controls the communication valve group and the electric heating mechanism to operate according to the temperature detected by the water outlet temperature sensor.

In one embodiment, the heating power of the electrothermal mechanism is adjustable.

In one embodiment, the electric heating mechanism comprises an electric heating tube and a water tank, wherein the water tank is communicated with the electric heating pipeline, and the electric heating tube is arranged in the water tank.

Drawings

Fig. 1 is a schematic structural diagram of a two-way valve provided in an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a three-way valve for setting heating equipment according to an embodiment of the present utility model;

fig. 3 is a schematic diagram II of a three-way valve for setting heating equipment according to an embodiment of the present utility model;

fig. 4 is a schematic diagram III of a three-way valve for setting heating equipment according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a proportional valve for heating equipment according to an embodiment of the present utility model.

Description of the reference numerals:

1. a combustion heat exchange assembly; 11. a main heat exchanger; 12. a heating return pipe; 121. a first interface; 122. a second interface; 123. a local pipeline; 13. a heating water outlet pipe; 14. a burner; 15. an air inlet pipe; 16. a fuel gas proportional valve; 2. an electric heating assembly; 21. an electric heating pipeline; 22. an electric heating mechanism; 3. a communication valve group; 31. a two-way valve; 32. a three-way valve; 33. a proportional valve; 4. a water outlet temperature sensor; 5. a water circulation assembly; 51. a plate heat exchanger; 52. a water inlet pipe; 53. a water outlet pipe is used; 54. a water inlet valve group; 55. a water outlet valve group; 56. a water pump; 6. a pressure regulating assembly; 61. an expansion tank; 62. a water supplementing valve; 63. and a pressure release valve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "inner", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" and "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; 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 will be understood in specific cases by those of ordinary skill in the art.

The embodiment of the utility model provides heating equipment, as shown in fig. 1-5, the heating equipment comprises a combustion heat exchange assembly 1, the combustion heat exchange assembly 1 comprises a main heat exchanger 11, a heating return pipe 12, a heating outlet pipe 13, a burner 14 and an air inlet pipe 15 connected with the burner 14, the burner 14 generates high-temperature flue gas through gas combustion, the high-temperature flue gas can heat the main heat exchanger 11, the main heat exchanger 11 stores heat energy for heating water, and the heating water in the heating return pipe 12 comes from a user heating tail end. The water inlet end of the main heat exchanger 11 is communicated with a heating return pipe 12, the water outlet end of the main heat exchanger 11 is communicated with a heating outlet pipe 13, and heating water to be heated is heated through the main heat exchanger 11.

The heating equipment further comprises an electric heating assembly 2 and a communication valve group 3, the electric heating assembly 2 comprises an electric heating pipeline 21 and an electric heating mechanism 22, the electric heating pipeline 21 is connected with a local pipeline 123 of the heating return pipe 12 in parallel, the water outlet end of the electric heating pipeline 21 can be communicated with the water inlet end of the main heat exchanger 11, and the electric heating mechanism 22 is used for heating water flowing through the electric heating pipeline 21. When the fuel gas supply of the combustion heat exchange assembly 1 is insufficient, the heating water cannot be quickly heated by the heat generated by the fuel gas combustion, and at this time, the electric heating pipeline 21 can be conducted, so that part or all of the heating water can enter the electric heating pipeline 21 through the heating return pipe 12, and the heating water flowing through the electric heating pipeline 21 is heated through the electric heating mechanism 22. When the electric heating mechanism is not needed, all heating water only flows through the main heat exchanger 11 through the heating return pipe 12, so that the waterway resistance in the heating return pipe 12 is not increased, and the normal circulating flow of the heating water is ensured; in addition, the heating water after primary heating flowing through the electric heating pipeline 21 flows into the main heat exchanger 11 for secondary heating, so that the heating water is heated up rapidly, the overall heat efficiency of the heating equipment is improved, and the heating water flow is ensured to meet the user requirement.

The communication valve group 3 is arranged on the heating return pipe 12 and the electric heating pipeline 21, and the communication valve group 3 can be used for conducting or closing the local pipeline 123 and the electric heating pipeline 21 so that heating water can flow through the local pipeline 123 and/or the electric heating pipeline 21 and enter the main heat exchanger 11, and a user can selectively distribute the flow of the heating water in different heating modes according to use requirements: when the fuel gas supply is sufficient, the electric heating pipeline 21 can be closed through the communication valve group 3, and all heating water enters the main heat exchanger 11 through the heating return pipe 12; when the fuel gas is insufficient, the electric heating pipeline 21 can be conducted through the communication valve group 3, and part or all of heating water is heated by the electric heating mechanism 22 and then enters the main heat exchanger 11 to be secondarily heated, so that the problems that the heating equipment with single energy source is insufficient in fuel gas, the flow of heating water cannot be ensured, and the use of a user is affected are solved.

In one embodiment, the communication valve group 3 comprises at least two-way valves 31, and the local pipeline 123 and the electric heating pipeline 21 are respectively provided with at least one two-way valve 31; as shown in fig. 1, the heating apparatus is provided with two-way valves 31, and each two-way valve 31 is capable of individually controlling the conduction or closure of the local pipe 123 and the electric heating pipe 21. When the two-way valve 31 on the local pipeline 123 is opened and the two-way valve 31 on the electric heating pipeline 21 is closed, all heating water enters the main heat exchanger 11 through the heating return pipe 12; when the two-way valve 31 on the local pipeline 123 is closed and the two-way valve 31 on the electric heating pipeline 21 is opened, all heating water enters the main heat exchanger 11 through the electric heating pipeline 21; when the two-way valve 31 on the local pipeline 123 and the two-way valve 31 on the electric heating pipeline 21 are opened, one part of heating water passes through the heating return pipe 12, and the other part of heating water passes through the electric heating pipeline 21, and finally, the heating water is converged and then enters the main heat exchanger 11 for heat exchange and heating.

In one embodiment, the communication valve group 3 includes at least one three-way valve 32, and the three-way valve 32 is disposed at a connection portion between the heating return pipe 12 and the electric heating pipeline 21, for communicating the heating return pipe 12 and the electric heating pipeline 21. As shown in fig. 2, the heating apparatus is provided with two three-way valves 32, both of the two three-way valves 32 are provided on the heating return pipe 12, and the two three-way valves 32 are connected to the water inlet end and the water outlet end of the electric heating pipe 21, respectively. The three-way valve 32 can select the flow direction of the heating water so that the heating water enters the local piping 123 or the electric heating piping 21. Moreover, when the electric heating pipeline 21 needs to be maintained, the two ends of the electric heating pipeline 21 can be closed through the two three-way valves 32, so that the normal conduction of the heating return pipe 12 is ensured, and the heating water is prevented from entering the electric heating pipeline 21.

In an embodiment, the communication valve group 3 includes a three-way valve 32, and through the three-way valve 32, two-way valves 31 can be replaced to realize on-off control of the heating return pipe 12 and the electric heating pipeline 21 at the same time, so that the structure is simpler and easy to control. As shown in fig. 3, the three-way valve 32 has a water inlet, a first water outlet and a second water outlet, the water inlet and the first water outlet are connected to the heating return pipe 12, and the water inlet end of the electric heating pipe 21 is connected to the second water outlet. The three-way valve 32 can control the flow distribution of the heating water in the heating return pipe 12 and the electric heating pipeline 21, and the three-way valve 32 is arranged at the water inlet end of the electric heating pipeline 21, so that the response performance is better, and the heating water is prevented from being accumulated in the electric heating pipeline 21 when electric energy is not needed for heating.

Of course, the three-way valve 32 may also be disposed at the water outlet end of the electric heating pipeline 21, as shown in fig. 4, in an embodiment, the water inlet and the first water outlet of the three-way valve 32 are connected to the heating return pipe 12, and the water outlet end of the electric heating pipeline 21 is connected to the second water outlet, so that the on-off of the electric heating pipeline 21 is controlled at the water outlet end of the electric heating pipeline 21, which is also within the protection scope of the present utility model.

In one embodiment, the communication valve set 3 further includes a proportional valve 33, where the proportional valve 33 is disposed on the local pipeline 123 or the electric heating pipeline 21, and the proportional valve 33 is used for adjusting the flow of the heating water in the electric heating pipeline 21 or the local pipeline 123. As shown in fig. 5, the proportional valve 33 is provided on the local piping 123, and at the same time, the heating apparatus communicates the heating return pipe 12 with the water inlet end of the electric heating piping 21 through a three-way valve 32. The flow rate of the heating water flowing through the local pipeline 123 can be continuously and proportionally regulated and controlled through the proportional valve 33 so as to meet the use requirements of users for different water temperatures and different flow rates. Of course, in other embodiments, the proportional valve 33 may be disposed on the electric heating tube 21, which is within the scope of the present utility model.

In an embodiment, the heating return pipe 12 is provided with a first interface 121 and a second interface 122, the water inlet end of the electric heating pipeline 21 is communicated with the first interface 121, and the water outlet end of the electric heating pipeline 21 is communicated with the second interface 122, so that the heating water flowing through the electric heating pipeline 21 can enter the main heat exchanger 11 through the heating return pipe 12, and two inlets are not required to be formed at the water inlet end of the main heat exchanger 11, so that the structure is simpler.

In an embodiment, the heating device further comprises a water outlet temperature sensor 4, the water outlet temperature sensor 4 is arranged on the heating water outlet pipe 13, the heating device further comprises a controller, the water outlet temperature sensor 4, the electric heating mechanism 22 and the communication valve group 3 are electrically connected with the controller, and the controller controls the communication valve group 3 and the electric heating mechanism 22 to operate according to the temperature detected by the water outlet temperature sensor 4. The outlet water temperature sensor 4 is used for sensing the temperature of the heating water in the heating outlet pipe 13, when the temperature of the heating water is insufficient, the gas supply is insufficient, the electric heating mechanism 22 needs to be started to supply heat by electric energy, at this time, the outlet water temperature sensor 4 feeds back the temperature of the heating water to the controller, and the controller starts the electric heating mechanism 22 according to the temperature detected by the outlet water temperature sensor 4 when the temperature of the heating water is insufficient, and simultaneously adjusts the communication valve group 3, so that the local pipeline 123 and the electric heating pipeline 21 reach the working state. The specific structure and control principle of the controller are the prior art in the field, and this embodiment is not described in detail.

In one embodiment, the heating power of the electric heating mechanism 22 can be adjusted. Preferably, the electrothermal pipe 21 is provided with an electrothermal temperature sensor (not shown), and the controller controls the heating power of the electrothermal mechanism 22 according to the temperature detected by the electrothermal temperature sensor. When the electrothermal temperature sensor detects that the water temperature of the electrothermal pipe 21 is too high or too low, it indicates that the heating power of the electrothermal mechanism 22 is too high or insufficient, at this time, the electrothermal temperature sensor feeds back the detected temperature to the controller, and the controller adjusts the heating power of the electrothermal mechanism 22 according to the detected temperature, so as to avoid electric energy waste or insufficient supply.

In one embodiment, the electrothermal mechanism 22 includes an electrothermal tube and a water tank (not shown) that communicates with the electrothermal tube 21, and the electrothermal tube is disposed in the water tank. The heating water in the electric heating pipeline 21 enters the water tank and is heated by the electric heating pipe in the water tank. The electric heating tube adopts a metal electric heating tube, preferably a nichrome wire electric heating tube, and the metal electric heating tube heats heating water in the water tank, so that the electric heating tube has the advantages of high heat transfer efficiency, quick heating and the like.

The heating equipment provided by the embodiment of the utility model has three working modes, namely:

operation mode one: the gas energy source is used for heating, the electric heating pipeline 21 is closed by the communication valve group 3, the burner 14 burns the gas to heat the main heat exchanger 11, and the heating water at the tail end of the user heating is subjected to heat exchange and temperature rise in the main heat exchanger 11 through the heating return pipe 12 and then returns to the tail end of the user heating through the heating outlet pipe 13;

and a second working mode: the electric energy is used for heating, the communication valve group 3 closes the heating return pipe 12 and conducts the electric heating pipeline 21, heating water at the tail end of user heating is heated by the electric heating mechanism 22 through the electric heating pipeline 21, secondary heating is realized through the main heat exchanger 11, and finally the heating water returns to the tail end of user heating through the heating water outlet pipe 13;

and a third working mode: simultaneously, the fuel gas and the electric energy are used for realizing dual-energy heating, the communication valve group 3 is communicated with the electric heating pipeline 21, heating water at the tail end of user heating enters the electric heating pipeline 21 from the part of the heating return pipe 12, is heated and warmed through the electric heating mechanism 22, is mixed with the heating water in the heating return pipe 12, enters the main heat exchanger 11 for heat exchange and warming, and finally returns to the tail end of user heating through the heating outlet pipe 13.

In one embodiment, the combustion heat exchange assembly 1 further includes a fuel gas proportional valve 16 disposed on the air inlet pipe 15, and the fuel gas proportional valve 16 is used for controlling air intake of the air inlet pipe 15. The gas proportional valve 16 can control the gas flow, thereby controlling the highest temperature of the heating water outlet pipe 13; moreover, when the fuel gas is not supplied enough and the electric energy is used for supplying heat, the working state of the burner 14 is closed through the fuel gas proportional valve 16, so that the idle burning of the burner 14 is avoided, and the safety of heating equipment can be increased.

In one embodiment, the heating apparatus further comprises a water circulation assembly 5, and the water circulation assembly 5 is used for providing domestic hot water. The water circulation assembly 5 comprises a plate heat exchanger 51, a water inlet pipe 52, a water outlet pipe 53, a water inlet valve block 54 and a water outlet valve block 55. The plate heat exchanger 51 can be connected to the heating outlet pipe 13 through the water inlet valve block 54. The water inlet pipe 52 and the water outlet pipe 53 are respectively communicated with the water inlet end and the water outlet end of the plate heat exchanger 51, and the plate heat exchanger 51 can heat domestic water in the water inlet pipe 52. The water inlet valve block 54 connects the heating water outlet pipe 13 to the plate heat exchanger 51, and the heated heating water heats the domestic water in the water inlet pipe 52 by the plate heat exchanger 51. The water outlet valve group 55 enables the heating return pipe 12 to be communicated with the plate heat exchanger 51, and the heating water in the heating outlet pipe 13 flows circularly through the plate heat exchanger 51 and then through the heating return pipe 12, so that the circulation of the domestic water is ensured to continuously supply heat. The water circulation assembly 5 preferably further comprises a water pump 56, the water pump 56 powering the circulation of the heating water.

Specifically, the heating device further comprises a pressure regulating assembly 6, the pressure regulating assembly 6 comprises an expansion water tank 61, a water supplementing valve 62 and a pressure relief valve 63, the water supplementing valve 62 controls the expansion water tank 61 to provide supplementing water for the heating water circulation waterway through a pipeline so as to raise pressure, and the pressure relief valve 63 can reduce the pressure of the heating water circulation waterway, so that the pressure balance of the heating water circulation waterway is ensured.

In the specific content of the above embodiment, any combination of the technical features may be performed without contradiction, and for brevity of description, all possible combinations of the technical features are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing detailed description of the embodiments presents only a few embodiments of the present utility model, which are described in some detail and are not intended to limit the scope of the present utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. Heating equipment, including main heat exchanger (11), connect in heating wet return (12) of main heat exchanger (11) water inlet and connect in heating outlet pipe (13) of main heat exchanger (11) water outlet, its characterized in that, heating equipment still includes:

the electric heating assembly (2), the electric heating assembly (2) comprises an electric heating pipeline (21) and an electric heating mechanism (22), the electric heating pipeline (21) is connected with a local pipeline (123) of the heating return pipe (12) in parallel, the water outlet end of the electric heating pipeline (21) can be communicated with the water inlet end of the main heat exchanger (11), and the electric heating mechanism (22) is used for heating water flowing through the electric heating pipeline (21);

the communication valve group (3) can be used for conducting or closing the local pipeline (123) and the electric heating pipeline (21).

2. Heating installation according to claim 1, characterized in that the communication valve group (3) comprises at least two-way valves (31), at least one of the two-way valves (31) being provided on the local line (123) and on the electric heating line (21), respectively.

3. The heating apparatus according to claim 1, characterized in that the communication valve group (3) includes at least one three-way valve (32), the three-way valve (32) being provided at a junction of the heating return pipe (12) and the electric heating pipe (21).

4. The heating installation according to claim 1, characterized in that the communication valve block (3) comprises a three-way valve (32), the three-way valve (32) having a water inlet, a first water outlet and a second water outlet, the water inlet and the first water outlet being connected to the heating return pipe (12), the water inlet end of the electric heating pipe (21) being connected to the second water outlet.

5. The heating installation according to claim 1, characterized in that the communication valve block (3) comprises a three-way valve (32), the three-way valve (32) having a water inlet, a first water outlet and a second water outlet, the water inlet and the first water outlet being connected to the heating return pipe (12), the water outlet end of the electric heating pipe (21) being connected to the second water outlet.

6. The heating installation according to any one of claims 1-5, characterized in that the communication valve block (3) further comprises a proportional valve (33), the proportional valve (33) being arranged on the local conduit (123) or the electric heating conduit (21).

7. The heating apparatus according to claim 1, wherein the heating return pipe (12) is provided with a first interface (121) and a second interface (122), the water inlet end of the electric heating pipe (21) is communicated with the first interface (121), and the water outlet end of the electric heating pipe (21) is communicated with the second interface (122).

8. The heating equipment according to claim 1, characterized in that the heating equipment further comprises a water outlet temperature sensor (4), the water outlet temperature sensor (4) is arranged on the heating water outlet pipe (13), the heating equipment further comprises a controller, the water outlet temperature sensor (4), the electric heating mechanism (22) and the communication valve group (3) are electrically connected with the controller, and the controller controls the communication valve group (3) and the electric heating mechanism (22) to operate according to the temperature detected by the water outlet temperature sensor (4).

9. The heating installation according to claim 1, characterized in that the heating power of the electric heating means (22) is adjustable.

10. The heating apparatus according to claim 1, wherein the electric heating mechanism (22) includes an electric heating pipe and a water tank, the water tank being communicated with the electric heating pipe (21), the electric heating pipe being provided in the water tank.