Air source heat pump dual-supply device

Abstract

The utility model discloses an air source heat pump dual combined supply device which comprises an external protection module, and an energy storage and release module, an energy conversion module, a power transmission module, an anti-freezing defrosting module and an electric control module are arranged in the external protection module. The interior of the energy storage module is divided into a high energy taking area, a middle energy taking area and a low energy taking area through layered diaphragms. The energy supply tail end is connected with an energy supply tail end water inlet end and an energy supply tail end water return end; the energy conversion module is connected with the outdoor compression device to form a complete circulation loop, and cold energy and heat energy conversion requirements are provided. The power transmission module is connected with the energy supply tail end loop; the anti-freezing defrosting module comprises a conversion control device, an enclosure structure, a high-temperature energy storage combination and a valley electricity auxiliary device; the high-temperature energy storage combination comprises a cabin body, an energy storage block and an off-peak electricity auxiliary device, and the energy storage block is a honeycomb-shaped high-temperature molten salt compression block; the eleventh pipe orifice is connected with the fourth pipe orifice; the twelfth pipe opening is connected with an outlet of the power transmission module.

Description

Technical Field

[0001] The utility model relates to the technical field of air source heat pumps, and specifically discloses an air source heat pump dual-supply device that combines stratified heat extraction and defrosting and anti-freezing functions. Background Art

[0002] The water tank in the air source heat pump dual-supply system mainly serves to prevent the outdoor main unit from frequently starting and stopping and to provide buffer heat during the defrosting process. In the conventional application process, the water tank supplies the energy consumption loss of the building through the energy provided by the outdoor main unit and the auxiliary heating device. However, during use, due to the temperature stratification effect in the water tank, the hot water will flow to the top of the water tank, while the colder water sinks to the bottom. The temperature stratification phenomenon of the water tank itself causes that during use, the water at different layers needs to be remixed before it can be used, which leads to the problem that the temperature change range is large after the water at different layers is mixed. This kind of problem gives rise to the problems that the auxiliary heating device and the main unit frequently start and the frequency change is too large, increasing the energy consumption loss during the system operation and reducing the service life of the equipment.

[0003] In the currently commonly used reverse cycle defrosting technology in the air source heat pump dual-supply system, a four-way reversing valve is used to change the refrigerant flow direction, and the unit operates reversely. The defrosting energy comes from the compressor power consumption and the heat absorbed from the indoor, changing the heating state to the cooling state, and the outdoor unit becomes the condenser for defrosting. During defrosting, the superheated refrigerant vapor discharged from the compressor is sent to the outdoor unit coil for defrosting. When the defrosting is completed, the operation of the heat pump reverses again and starts heating again, thus achieving the purpose of defrosting. However, during defrosting operation, a large amount of heat is absorbed from the building, reducing the indoor temperature in a short time, affecting the stability and comfort of the building functions. In addition, the defrosting times are too frequent, and the reversing valve needs to frequently reverse, resulting in easy wear of the reversing valve and relatively high system noise, reducing the service life of the equipment while increasing the failure rate of the equipment.

[0004] The problems of high system operation energy consumption, long defrosting time, and frequent startup existing in the above problems have become prominent problems restricting the large-scale popularization and application of the dual-supply system in severe cold and cold regions in recent years. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an air source heat pump dual-supply device, and the technical problems it solves are as follows: 1. The system anti-freezing problem in the air source heat pump dual-supply system under severe cold and cold weather conditions; 2. The problems of long defrosting time, frequent startup, insufficient defrosting heat, and insufficient heat application of the water tank in the air source heat pump unit.

[0006] The utility model adds an energy storage module and an intelligent stratified heating module. On the one hand, it efficiently utilizes the heat stored during off-peak electricity hours to supplement the energy consumption during system defrosting and the indoor building energy consumption, reducing the change in indoor temperature of the building. On the other hand, by controlling the heat extraction and heating technology of different temperature layers in the water tank, it can improve the energy utilization efficiency, reduce energy waste, thereby achieving the purpose of energy conservation and emission reduction and effectively improving the continuity, stability and comfort of the building heating process.

[0007] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0008] An air source heat pump combined heating and cooling device includes an external protection module with a box structure, and an energy storage and release module, an energy conversion module, a power transmission module, an anti-freezing and defrosting module and an electric control module are arranged inside the external protection module;

[0009] The energy storage and release module includes an energy storage combination body. Inside the energy storage combination body, there are a high-temperature heat extraction area, a medium-temperature heat extraction area, and a low-temperature heat extraction area. There are stratified diaphragms between the high-temperature heat extraction area and the medium-temperature heat extraction area, and between the medium-temperature heat extraction area and the low-temperature heat extraction area. A first pipe orifice is arranged to be connected with the water inlet end of the energy supply terminal; a second pipe orifice is arranged to be connected with the water return end of the energy supply terminal; a third pipe orifice is arranged to be connected with a sewage discharge device; a fourth pipe orifice is arranged in the middle of the energy storage combination body; a fifth pipe orifice is arranged at the top of the energy storage combination body for connecting an exhaust and pressure relief device; a sixth pipe orifice is arranged in the upper part of the energy storage combination body, and the sixth pipe orifice is close to the heating device; a fixing structure is arranged on the energy storage combination body to play a fixing and supporting role;

[0010] The energy conversion module includes a plate-type energy conversion device, a support device, a buffer structure, a seventh pipe orifice, an eighth pipe orifice, a ninth pipe orifice, and a tenth pipe orifice; the plate-type energy conversion device is a brazed copper-aluminum composite structure; the support device is located at the bottom of the plate-type energy conversion device to play a structural support role; the buffer structure is located at the bottom of the support device and is an elastic rubber structure; the seventh pipe orifice and the eighth pipe orifice are connected to an outdoor compression device through copper pipes; the ninth pipe orifice and the tenth pipe orifice form a complete circulation loop to provide the conversion requirements of cold and heat;

[0011] The power transmission module is connected to the ninth pipe orifice and the energy supply terminal loop to provide power transmission, has a fixed-frequency and variable-frequency dual-control function, and can be switched at will;

[0012] The anti-freezing and defrosting module includes a conversion control device, an enclosure structure, a high-temperature energy storage combination, a valley electricity auxiliary device, an eleventh pipe orifice, and a twelfth pipe orifice; the conversion control device is an electric valve, which is a closed-circuit valve that plays a cut-off role; the enclosure structure includes an outer shell structure and an inner heat insulation structure. The material of the outer shell structure is stainless steel, and the inner heat insulation structure is a high-temperature resistant fiberglass material with a thickness of not less than 10 mm;

[0013] The high-temperature energy storage combination includes a cabin body and energy storage blocks. The material of the cabin body partition is asbestos. The energy storage blocks are honeycomb-shaped high-temperature molten salt compression blocks with a phase change heat storage function. The phase change temperature range is 90 - 110°C. The valley electricity auxiliary device is an air-type or immersion-type electric heating device with an overheat protection function and is located in the middle position of the high-temperature energy storage combination. The eleventh pipe orifice is connected to the fourth pipe orifice. The twelfth pipe orifice is connected to the outlet of the power transmission module, and the connection method is O-ring seal or end face seal connection.

[0014] The electronic control module includes an internal transmission device and an external touch control device. The internal transmission device includes a temperature and humidity, operation mode control module. The external touch control device is located on the upper part of the front protection structure and conducts data transmission with the internal transmission device through a connection port.

[0015] An air source heat pump two-way supply device provided by the present utility model has the following advantages compared with the prior art:

[0016] In the present utility model, the heat in different temperature layers of the energy storage combination in the energy storage and release module is used in different regions through a layered partition. The two-way supply system can flexibly use the relatively hot water at the top layer of the energy storage combination. At the same time, when the heat supply is insufficient, the heating device arranged in the high-energy extraction area can accurately heat the temperature in the high-energy extraction area. At this time, the high-energy extraction area has a relatively high basic temperature, which can enable the heating device to quickly supplement the energy lost by the system and improve the heating efficiency of the entire system.

[0017] The present utility model also provides two solutions, namely an anti-freezing and defrosting module and a precise control module for valley electricity energy storage device, to solve the problems of excessive indoor temperature change and reduced comfort during defrosting of the air source heat pump two-way supply system. It not only solves the problem of indoor temperature reduction but also solves the instantaneous heat demand of the system during defrosting, ensuring the balanced and stable utilization of the energy stored in valley electricity during the defrosting process and the next defrosting process, improving the stability of the entire system, and greatly reducing the operation cost during the defrosting process and the impact of long defrosting time.

[0018] In addition, the outdoor and indoor connection pipeline system of the present utility model uses fluorine pipes for connection, and no special anti-freezing treatment is required in extremely cold weather, solving the problem of freezing and leakage of the two-way supply pipeline system in extremely cold weather, ensuring the safe and stable operation of the two-way supply system, and greatly enhancing the application and promotion value of the two-way supply system in severe cold and cold regions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 : Axonometric schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 : Schematic diagram of the overall internal structure of the present utility model;

[0021] Figure 3: Schematic diagram of the internal front view structure of the present utility model;

[0022] Figure 4 : Figure 3 Schematic diagram of the cross-sectional structure of section A-A in;

[0023] Figure 5 : Schematic diagram of the overall structure of the energy storage and release module;

[0024] Figure 6 : Schematic diagram of the bottom view structure of the energy storage and release module;

[0025] Figure 7 : Figure 6 Schematic diagram of the cross-section of section B-B in;

[0026] Figure 8 : Figure 6 Schematic diagram of the cross-section of section C-C in;

[0027] Figure 9 : Schematic diagram of the three-dimensional structure of the energy conversion module;

[0028] Figure 10 : Schematic diagram of the front view structure of the anti-freezing and defrosting module;

[0029] Figure 11 : Figure 10 Schematic diagram of the cross-sectional structure of section B-B in;

[0030] In the figure, 1. Energy storage and release module, 11. Energy storage combination, 12. High-energy extraction area, 13. Medium-energy extraction area, 14. Low-energy extraction area structure, 15. Heating device, 16. First pipe orifice, 17. Second pipe orifice, 18. Third pipe orifice, 19. Fourth pipe orifice, 110. Fifth pipe orifice, 111. Sixth pipe orifice, 112. Fixing structure, 113. Laminated diaphragm, 2. Energy conversion module, 21. Plate-type energy conversion device, 22. Support device, 23. Buffer structure, 24. Seventh pipe orifice, 25. Eighth pipe orifice, 26. Ninth pipe orifice, 27. Tenth pipe orifice, 3. Power transmission module, 4. Anti-freezing and defrosting module, 41. Conversion control device, 42. Enclosure structure, 43. High-temperature energy storage combination; 44. Valley electricity auxiliary device, 45. Eleventh pipe orifice, 46. Twelfth pipe orifice, 5. External protection module, 51. Front protection structure, 52. Top protection structure, 53. Left protection structure, 54. Right protection structure, 55. Bottom protection structure, 56. Rear protection structure; 57. Safety protection device, 6. Electric control module, 61. Built-in transmission device, 62. External touch control device. Detailed implementation mode

[0031] The following provides a detailed description of the present utility model through specific embodiments. Those skilled in this technology can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. However, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "linkage", "contact", and "fixation" should be understood in a broad sense. For example, it can be the connection of pipelines, the connection of pipe fittings, or the connection of equipment; it can be a split connection or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. It can be the connection inside two components or the connection outside two components; it can be direct contact or indirect contact. It can be the contact between moving parts or the contact between fixed parts; it can be the fixation between two components or the fixation between equipment. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] Embodiment 1: Specific assembly structure

[0033] As Figures 1 to 11 shown, the figure exemplarily shows an air source heat pump combined heating and cooling device, and its specific structure is as follows:

[0034] It includes an external protection module 5 with a box structure. Inside the external protection module 5, there are an energy storage and release module 1, an energy conversion module 2, a power transmission module 3, an anti-freezing and defrosting module 4, and an electronic control module 6;

[0035] In the embodiment of the present application, the external protection module 5 consists of a front protection structure 51, a top protection structure 52, a left protection structure 53, a right protection structure 54, a bottom protection structure 55, a rear protection structure 56, and a safety protection device 57. The front protection structure 51, the top protection structure 52, the left protection structure 53, the right protection structure 54, the bottom protection structure 55, and the rear protection structure 56 form an enclosure with a box structure, and the enclosure contains the energy storage and release module 1, the energy conversion module 2, and the power transmission module 3. A safety protection device 57 is provided on the top of the external protection module 5, and the safety protection device 57 is connected to the fifth pipe orifice 110. The safety protection device 57 described here is a pressure safety valve that automatically opens for unloading under high temperature and high pressure.

[0036] The energy storage and release module 1 includes an energy storage combination 11, an energy extraction high zone 12, an energy extraction middle zone 13, an energy extraction low zone 14, a heating device 15, a first pipe orifice 16, a second pipe orifice 17, a third pipe orifice 18, a fourth pipe orifice 19, a fifth pipe orifice 110, a sixth pipe orifice 111, a fixing structure 112, and a layered diaphragm 113;

[0037] The energy storage assembly 11 internally includes an energy extraction high zone 12, an energy extraction middle zone 13, and an energy extraction low zone 14. A layered diaphragm 113 is provided between the energy extraction high zone 12 and the energy extraction middle zone 13, and between the energy extraction middle zone 13 and the energy extraction low zone 14 to achieve interval separation. The first pipe orifice 16 is directly connected to the water inlet end of the energy supply terminal; the second pipe orifice 17 is connected in a bypass manner to the water return end of the energy supply terminal; the third pipe orifice 18 is connected to the sewage discharge device; the fourth pipe orifice 19 is located in the middle of the energy storage assembly 11; the fifth pipe orifice 110 is located at the top of the energy storage assembly 11 and is used to connect to the exhaust and pressure relief device, which is connected to the safety protection device 57 in this embodiment; the sixth pipe orifice 111 is located in the upper part of the energy storage assembly 11 and is close to the heating device 15; the fixing structure 112 is located at the rear of the energy storage assembly 11, and the fixing structure 112 plays a role in fixing and supporting.

[0038] The energy conversion module 2 includes an energy conversion device 21, a support device 22, a buffer structure 23, a seventh pipe orifice 24, an eighth pipe orifice 25, a ninth pipe orifice 26, and a tenth pipe orifice 27; the energy conversion device 21 adopts a plate-type energy conversion device, and this plate-type energy conversion device adopts a brazed copper-aluminum composite structure, and this brazed copper-aluminum composite structure has a better heat exchange effect; the support device 22 is located at the bottom of the energy conversion device 21, and the buffer structure 23 is located at the bottom of the support device 22 and is an elastic rubber structure, and the two cooperate to play an elastic support role; the seventh pipe orifice 24 and the eighth pipe orifice 25 are connected to the outdoor compression device through copper pipes; the ninth pipe orifice 26 and the tenth pipe orifice 27 form a complete circulation loop to provide the conversion requirements of cold and heat.

[0039] The power transmission module 3 is connected to the ninth pipe orifice 26 and the energy supply terminal loop, and its function is to provide power transmission, has a fixed-frequency and variable-frequency dual-control function, and can be switched arbitrarily between fixed-frequency and variable-frequency.

[0040] The anti-freezing and defrosting module 4 includes a conversion control device 41, an enclosure structure 42, a high-temperature energy storage composite structure 43, a valley electricity auxiliary device 44, an eleventh pipe orifice 45, and a twelfth pipe orifice 46; the conversion control device 41 is an electric structure and is a closed-circuit valve that plays a cut-off role; the enclosure structure 42 includes an outer shell structure and an inner heat-insulating structure, the outer shell structure is made of stainless steel, and the inner heat-insulating structure is a high-temperature resistant fiberglass material with a thickness of not less than 10 mm; the high-temperature energy storage composite structure 43 includes a cabin body and energy storage blocks, the cabin body partition is made of asbestos, and the energy storage blocks are honeycomb-shaped high-temperature molten salt compression blocks with a phase change heat storage function, and the phase change temperature range is 90 - 110 °C, the valley electricity auxiliary device 44 is an air-type or immersion-type electric heating device with an overheat protection function and is located in the middle position of the high-temperature energy storage composite structure 43; the eleventh pipe orifice 45 is connected to the fourth pipe orifice 19; the twelfth pipe orifice 46 is connected to the outlet of the power transmission module 3, and the connection method is O-ring seal or end face seal connection.

[0041] The electronic control module 6 includes a built-in transmission device 61 and an external touch control device 62; the built-in transmission device 61 includes a temperature and humidity, and operation mode control module; the external touch control device 62 is located on the upper part of the front protection structure 51 and transmits data with the built-in transmission device 61 through a connection port.

[0042] Embodiment 2: Valley electricity energy storage and auxiliary defrosting process

[0043] As Figure 10 、 Figure 11 shown, a temperature detection device is arranged inside the anti-freezing and defrosting module 4, and the set temperature resistance range is not lower than 200 °C. During the night valley electricity time range (which can be set) in the heating stage, when the temperature detection device measures that the internal temperature of the anti-freezing and defrosting module 4 is lower than 90 °C, the valley electricity auxiliary device 44 is started. When the internal temperature of the anti-freezing and defrosting module 4 reaches 120 °C and maintains for at least 30 min, the valley electricity auxiliary device 44 stops operating; when the system detects a defrosting demand, the conversion control device 41 is opened proportionally according to the temperature change in the high energy extraction area 12 of the energy storage combination 11 to ensure that the temperature in the high energy extraction area 12 always remains above 50 °C. When the temperature in the high energy extraction area 12 during the defrosting process drops below 45 °C and maintains for at least 3 min, the energy supply device 15 is started to maintain the temperature in the high energy extraction area 12 above 50 °C. After the defrosting mode stops operating, the energy supply device 15 is closed and the conversion control device 41 is closed.

[0044] Furthermore, in this embodiment, the high-temperature molten salt compression block in the high-temperature energy storage combination structure 43 adopts a channel-shaped honeycomb structure, which improves the air convection and heat transfer conversion inside the anti-freezing and defrosting module 5, and increases the stable and efficient utilization of the energy storage and release process. Those skilled in the art can flexibly adjust the placement quantity of the high-temperature molten salt compression blocks according to the defrosting heat requirements at different ambient temperatures to reduce the impact of defrosting on the indoor temperature of the building and reduce the energy loss during the system operation process.

[0045] Example 3: Stratified heat extraction and heat supply process

[0046] As Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 shown, the energy storage and release combination 11 internally includes three parts: a high energy extraction area 12, a medium energy extraction area 13, and a low energy extraction area 14. Among them, a temperature detection probe is arranged in the high energy extraction area 12. During the heating process, the water body in the high energy extraction area 12 provides the heat demand for building heating through the first pipe orifice 16. When it is detected that the temperature is lower than 50 °C (which can be set), heat can be supplemented through the electric heating device 15 or the anti-freezing and defrosting module 4 to maintain the temperature constant; the water body in the medium energy extraction area 13 is connected to the fourth pipe orifice 19, and the water body in the low energy extraction area 14 is connected to the return water pipe of the building heating system through the second pipe orifice 17 to play a role in maintaining the hydraulic balance.

[0047] The above are only the preferred embodiments of the utility model and are not intended to limit the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the utility model shall be included within the protection scope of the utility model.

Claims

1. An air source heat pump combined heat supply device, characterized in that: include: An external protection module, wherein an energy storage and release module, an energy conversion module, a power transmission module, an antifreeze and defrost module, and an electronic control module are arranged inside the external protection module; The energy storage and release module is divided into a high energy intake area, a middle energy intake area, and a low energy intake area by a layered diaphragm; a first pipe opening is provided to be connected to the water inlet end of the energy supply end; a second pipe opening is provided to be connected to the water return end of the energy supply end; a fourth pipe opening is provided in the middle of the energy storage assembly; and an exhaust pressure relief device is provided on the top of the energy storage assembly; The energy conversion module includes an energy conversion device, a seventh pipe port, an eighth pipe port, a ninth pipe port, and a tenth pipe port; the seventh pipe port and the eighth pipe port are connected to an outdoor compression device; the ninth pipe port and the tenth pipe port form a complete circulation loop to provide cooling and heat conversion requirements; the power transmission module is connected to the ninth pipe port and the energy supply terminal loop; The antifreeze and defrost module includes a conversion control device, an enclosure structure, a high-temperature energy storage combination, a valley power auxiliary device, an eleventh pipe port, and a twelfth pipe port; the conversion control device is an electric valve; the enclosure structure includes an outer shell structure and an inner insulation structure; The high-temperature energy storage combination includes a cabin, an energy storage block and a valley power auxiliary device, wherein the energy storage block is a honeycomb-shaped high-temperature molten salt compression block; the eleventh pipe port is connected to the fourth pipe port; and the twelfth pipe port is connected to the outlet of the power transmission module.

2. The air source heat pump combined heat generation device according to claim 1, characterized in that: The electric control module includes a built-in transmission device and an external touch control device; The built-in transmission device includes temperature and humidity, and operation mode control modules; the external touch control device is located on the upper part of the front protection structure, and transmits data with the built-in transmission device through a connection port.

3. The air source heat pump combined heat generation device according to claim 1, characterized in that: The energy conversion device is a plate-type energy conversion device and is a brazed copper-aluminum composite structure.

4. An air source heat pump combined heat supply device according to claim 1 or 3, characterized in that: A supporting device and a buffer structure are arranged at the bottom of the plate-type energy conversion device, and the buffer structure is an elastic rubber structure.

5. The air source heat pump combined heat generation device according to claim 1, characterized in that: The power transmission module is connected to the ninth pipe port and the energy supply terminal circuit, has a fixed frequency and variable frequency dual control function and can be switched at will.

6. The air source heat pump combined heat generation device according to claim 1, characterized in that: A sixth pipe opening is arranged on the upper part of the energy storage assembly, and the sixth pipe opening is close to the heating device.

7. The air source heat pump combined heat generation device according to claim 1, characterized in that: The outer shell structure of the enclosure structure is made of stainless steel, and the inner insulation structure is made of high-temperature resistant fiberglass material, and the thickness of the high-temperature resistant fiberglass material is not less than 10 mm.

8. The air source heat pump combined heat generation device according to claim 1, characterized in that: The valley power auxiliary device is an air-type or water-immersion electric heating device, which is located in the middle of the high-temperature energy storage combination.

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