Air source heat pump multi-split heating system

Abstract

The utility model relates to the technical field of multi-split systems, and discloses an air source heat pump multi-split heating system which is characterized in that the outlet end of a compressor is fixedly connected with a copper pipe, one end of the copper pipe is connected with an outdoor water side heat release condenser, and one end of the outdoor water side heat release condenser is connected with an electronic expansion valve through the copper pipe; one end of the electronic expansion valve is connected with an outdoor heat absorption evaporator through a copper pipe, one end of the outdoor heat absorption evaporator is connected with the inlet end of a compressor through a copper pipe, the outdoor water side heat release condenser is connected with a steel pipe, and one end of the steel pipe is provided with a heat circulation assembly and a refrigeration circulation assembly. According to the refrigeration principle and the characteristics of refrigerants, the multi-split refrigeration air-conditioning system overcomes the defect that a plurality of indoor units matched with the same outdoor unit of the multi-split refrigeration air-conditioning system can not realize two working modes of refrigeration or heating in different rooms in heating seasons at the same time, and improves the use applicability of the device.

Description

Technical Field

[0001] This utility model relates to the field of multi-split system technology, specifically to an air source heat pump multi-split heating system. Background Technology

[0002] In typical multi-split air conditioning systems, during winter (heating season), all indoor units connected to the same outdoor unit operate in only one mode: either cooling or heating simultaneously. It's impossible to have some indoor units heating while others are cooling when the outdoor unit is operating. This is particularly problematic in restaurants and hot pot establishments where some rooms require cooling while most require heating. Typical multi-split air conditioning systems struggle to achieve simultaneous cooling and heating. There's no significant improvement in the ability of multiple indoor units connected to the same outdoor unit in a multi-split refrigeration air conditioning system to simultaneously operate in both cooling and heating modes in different rooms. Therefore, an air-source heat pump multi-split heating system is proposed. Utility Model Content

[0003] The purpose of this invention is to provide an air source heat pump multi-split heating system to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an air source heat pump multi-split heating system, including a compressor, a copper pipe fixedly connected to the outlet end of the compressor, an outdoor water-side heat-releasing condenser connected to one end of the copper pipe, an electronic expansion valve connected to one end of the outdoor water-side heat-releasing condenser via a copper pipe, an outdoor heat-absorbing evaporator connected to one end of the electronic expansion valve via a copper pipe, a compressor inlet end connected to one end of the outdoor heat-absorbing evaporator via a copper pipe, a steel pipe connected to the outdoor water-side heat-releasing condenser, and a heat circulation component and a refrigeration circulation component respectively installed at one end of the steel pipe.

[0005] Preferably, the aforementioned heat circulation assembly includes a hot water pump, a hot water distributor, and a hot water collector. The hot water pump is connected to one end of a steel pipe. One end of the hot water distributor is connected to the inlet of the hot water pump via a steel pipe. The other end of the hot water distributor is connected to several indoor units via several steel pipes. One end of the hot water collector is connected to one end of several indoor units via several steel pipes. The other end of the hot water collector is connected to an outdoor water-side heat release condenser.

[0006] Preferably, each of the aforementioned indoor units is connected to a hot water distributor and a hot water collector via a steel pipe equipped with a heating solenoid valve.

[0007] Preferably, the aforementioned refrigeration cycle assembly includes a tap water connector, a chilled water tank, and a chilled water pump. The tap water connector is installed on the chilled water tank via a steel pipe. One end of the chilled water pump is connected to one end of the chilled water tank via a steel pipe. The other end of the chilled water pump is connected to a chilled water distributor via a steel pipe. One end of the chilled water distributor is connected to several indoor units via several steel pipes. The several indoor units are connected to a chilled water collector via several steel pipes. One end of the chilled water collector is connected to the other end of the chilled water tank via a steel pipe.

[0008] Preferably, each of the aforementioned indoor units is connected to a cold water distributor and a cold water collector via a steel pipe equipped with a refrigeration solenoid valve.

[0009] Preferably, a heat-absorbing fan is installed on one side of the outdoor heat-absorbing evaporator described above.

[0010] Compared with the prior art, the present invention adopts the above technical solution and has the following technical effects: Based on the refrigeration principle and refrigerant characteristics, the present invention overcomes the disadvantage that multiple indoor units equipped with the same outdoor unit of a multi-split refrigeration air conditioning system cannot simultaneously achieve the two working modes of cooling or heating in different rooms during the heating season, thereby improving the applicability of the device. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the system of this utility model.

[0013] Explanation of reference numerals in the attached diagram: 1. Compressor; 2. Copper pipe; 3. Outdoor water-side heat release condenser; 4. Electronic expansion valve; 5. Outdoor heat absorption evaporator; 6. Heat absorption fan; 7. Steel pipe; 8. Hot water pump; 9. Hot water distributor; 10. Hot water collector; 11. Tap water connector; 12. Cold water tank; 13. Cold water pump; 14. Cold water distributor; 15. Cold water collector; 16. Indoor unit; 17. Heating solenoid valve; 18. Cooling solenoid valve. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0016] Example

[0017] Please see Figure 1 This utility model provides a technical solution: an air source heat pump multi-split heating system, including a compressor 1. A copper pipe 2 is fixedly connected to the outlet end of the compressor 1. One end of the copper pipe 2 is connected to an outdoor water-side heat-releasing condenser 3. One end of the outdoor water-side heat-releasing condenser 3 is connected to an electronic expansion valve 4 via the copper pipe 2. One end of the electronic expansion valve 4 is connected to an outdoor heat-absorbing evaporator 5 via the copper pipe 2. One end of the outdoor heat-absorbing evaporator 5 is connected to the inlet end of the compressor 1 via the copper pipe 2. A steel pipe 7 is connected to the outdoor water-side heat-releasing condenser 3. A heat circulation component and a refrigeration circulation component are respectively installed at one end of the steel pipe 7. A heat-absorbing fan 6 is installed on one side of the outdoor heat-absorbing evaporator 5. When some indoor units have heating needs, under the outdoor heating ambient temperature, the high-temperature, high-pressure refrigerant gas discharged from the compressor 1 of the multi-split unit enters the outdoor water-side heat-releasing condenser 3 through the copper pipe 2, where it condenses and releases heat. The condensed, high-pressure liquid refrigerant is then throttled and cooled by the electronic expansion valve 4 to become a low-temperature liquid refrigerant. This low-temperature, low-pressure liquid refrigerant then enters the outdoor heat-absorbing evaporator 5 to absorb heat and evaporate into a gaseous refrigerant. The heat-absorbing fan 6 forces convection between the outdoor heat-absorbing evaporator 5 and the outdoor air for heat absorption. The gaseous refrigerant from the outdoor heat-absorbing evaporator 5 enters the compressor 1 inlet and is compressed by the compressor 1, completing one heating refrigerant cycle. The purpose of this heating cycle is to achieve the condensation and heat release of the refrigerant in the outdoor water-side heat-releasing condenser 3. The heat in the outdoor water-side heat-releasing condenser 3 comes from the sum of the heat absorbed by the outdoor air from the evaporation of the outdoor heat-absorbing evaporator 5 and the heat generated by the work done by the compressor 1.

[0018] By setting up heat circulation components and refrigeration circulation components, the shortcomings of multi-split refrigeration air conditioning systems, which have multiple indoor units connected to the same outdoor unit, cannot simultaneously achieve the two working modes of cooling or heating in different rooms during the heating season, are overcome, thereby improving the applicability of the device.

[0019] The heat circulation assembly includes a hot water pump 8, a hot water distributor 9, and a hot water collector 10. The hot water pump 8 is connected to one end of a steel pipe 7. One end of the hot water distributor 9 is connected to the inlet of the hot water pump 8 via a steel pipe 7. The other end of the hot water distributor 9 is connected to several indoor units 16 via several steel pipes 7. One end of the hot water collector 10 is connected to one end of several indoor units 16 via several steel pipes 7. The other end of the hot water collector 10 is connected to the outdoor water-side heat release condenser 3. Each of the indoor units 16 is connected to the hot water distributor 9 and the hot water collector 10 via a steel pipe 7, and a heating solenoid valve 17 is installed. Hot water from the hot water collector 10 enters the outdoor water-side heat release condenser 3 to absorb heat from the refrigerant, increasing its temperature. The heated water then leaves the outdoor water-side heat release condenser 3 and enters the hot water pump 8 via steel pipe 7, where it is pressurized and circulated. The pressurized hot water from the hot water pump 8 enters the hot water distributor 9, where the high-temperature hot water is divided into several groups and enters the indoor units 16 (fan coil units) that require heating to release heat. During this process, the corresponding heating solenoid valves 17 at the inlet and outlet of the indoor units 16 that require heating open, while the corresponding cooling solenoid valves 18 at the inlet and outlet of the indoor units that require heating close. The hot water from the several heating indoor units 16 then enters the hot water collector 10 and enters the outdoor water-side heat release condenser 3 to absorb heat from the refrigerant, completing one heating hot water cycle.

[0020] The refrigeration cycle assembly includes a water inlet connector 11, a chilled water tank 12, and a chilled water pump 13. The water inlet connector 11 is installed on the chilled water tank 12 via a steel pipe 7. One end of the chilled water pump 13 is connected to one end of the chilled water tank 12 via a steel pipe 7, and the other end of the chilled water pump 13 is connected to a chilled water distributor 14 via a steel pipe 7. One end of the chilled water distributor 14 is connected to several indoor units 16 via several steel pipes 7. Several indoor units 16 are connected to a chilled water collector 15 via several steel pipes 7. One end of the chilled water collector 15 is connected to the other end of the chilled water tank 12 via a steel pipe 7. Several indoor units 16 are connected to the chilled water distributor 14 and the chilled water collector 15 via steel pipes 7, and each indoor unit 16 is connected to the chilled water distributor 14 and the chilled water collector 15 via a steel pipe 7. When some indoor units have a cooling demand, the multi-split system operates at a lower tap water temperature in the outdoor heating environment, especially in winter. Water inlet 11 connects to the water pipe to replenish the cold water tank 12. The water in the cold water tank 12 is pressurized and circulated by the cold water pump 13 after passing through the steel pipe 7. The pressurized cold water enters the cold water separator 14. The cold water in the cold water separator 14 is divided into several groups and enters the indoor units with cooling needs to release and absorb heat. During this process, the corresponding cooling solenoid valves 18 at the inlet and outlet of the indoor unit 16 with cooling needs are opened, and the corresponding heating solenoid valves 17 at the inlet and outlet of the indoor unit 16 with cooling needs are closed. The cold water from the several cooling indoor units enters the cold water collector 15 and then enters the cold water tank 12, completing one cooling cold water cycle.

[0021] Compressor 1: In a multi-split air-source heat pump system, the compressor draws in low-pressure, low-temperature refrigerant gas and discharges high-temperature, high-pressure refrigerant gas, driving the refrigerant to circulate in copper pipes and refrigeration components. Copper Pipe 2: Connects various heating components, through which the refrigerant circulates. Outdoor Water-Side Heat Release Condenser 3: Generally a plate heat exchanger, shell-and-tube heat exchanger, or coaxial heat exchanger. During heating, it typically has two sets of flow channels: a refrigerant flow channel and a hot water flow channel. During heating, the high-temperature refrigerant releases heat, and the hot water absorbs heat. The two fluids exchange heat in the two sets of flow channels, causing the hot water temperature to rise and the refrigerant gaseous phase to change to liquid, with its temperature decreasing. Electronic Expansion Valve 4: Throttling, cooling, and pressure reduction. Outdoor Heat Absorbing Evaporator 5: Generally a heat exchanger made of copper pipes and aluminum fins, where liquid refrigerant evaporates and absorbs heat from the ambient air. Heat Absorbing Fan 6: A motor and fan blades that force convection heat exchange between the liquid refrigerant in the outdoor heat absorbing evaporator 5 and the air.

[0022] Steel pipe 7: Generally made of stainless steel, the fluid is cold water, hot water or ethylene glycol solution; Hot water pump 8: When heating, it drives the hot water to circulate in the pipe; Hot water distributor 9: When heating, it evenly distributes hot water to the indoor units that need heating; Hot water collector 10: Collects hot water from each heating indoor unit.

[0023] Water inlet connector 11: Used to connect to the tap water pipe, generally for winter tap water, which should be at a low temperature for cooling. If the water temperature is high, a heat exchanger can be used to cool the tap water before supplying it to the cold water tank 12; Cold water tank 12: Stores tap water or cold water outdoors in winter; Cold water pump 13: Drives cold water (tap water) to circulate in the pipes during winter cooling; Cold water distributor 14: Distributes cold water (tap water) evenly to the indoor units that require cooling during cooling; Cold water collector 15: Collects cold water from each heating indoor unit; Indoor unit 16: Fan coil unit, used for indoor heating and cooling; Heating solenoid valve 17: Used to close the heating pipe; Cooling solenoid valve 18: Used to close the cooling pipe.

[0024] The working principle or structural principle is as follows: When some indoor units have a heating demand, under the outdoor heating ambient temperature, the high-temperature, high-pressure refrigerant gas discharged from the compressor 1 of the multi-split unit enters the outdoor water-side heat-releasing condenser 3 through copper pipe 2, where it condenses and releases heat. The condensed, high-pressure liquid refrigerant then passes through the electronic expansion valve 4, where it is throttled, depressurized, and cooled to become a low-temperature liquid refrigerant. This low-temperature, low-pressure liquid refrigerant then enters the outdoor heat-absorbing evaporator 5, where it absorbs heat and evaporates into a gaseous refrigerant. The heat-absorbing fan 6 forces convection between the outdoor heat-absorbing evaporator 5 and the outdoor air for heat absorption. The gaseous refrigerant from the outdoor heat-absorbing evaporator 5 enters the compressor 1 inlet, where it is compressed, completing one heating refrigerant cycle. The purpose of this heating cycle is to achieve the condensation and heat release of the refrigerant in the outdoor water-side heat-releasing condenser 3. The heat in the outdoor water-side heat-releasing condenser 3 comes from the sum of the heat absorbed by the outdoor air from the evaporator 5 and the heat generated by the compressor 1. For the heat cycle, hot water from the hot water collector 10 enters the outdoor water-side heat-releasing condenser 3 to absorb heat from the refrigerant, raising the water temperature. The heated hot water then leaves the outdoor water-side heat-releasing condenser 3 and enters the hot water pump 8 via the steel pipe 7, where it is pressurized and circulated. The pressurized hot water from the hot water pump 8 enters the hot water distributor 9, where the high-temperature hot water is divided into several groups and enters the indoor units 16 (fan coil units) that require heating to release heat. During this process, the corresponding heating solenoid valves 17 at the inlet and outlet of the indoor units 16 that require heating open, while the corresponding cooling solenoid valves 18 at the inlet and outlet of the indoor units that require heating close. The hot water from the several heating indoor units 16 enters the hot water collector 10 and then enters the outdoor water-side heat-releasing condenser 3 to absorb heat from the refrigerant, completing one heating hot water cycle.

[0025] For the cooling cycle, when some indoor units have a cooling demand, the multi-split system operates at a lower tap water temperature, especially in winter, when the outdoor heating ambient temperature is low. Tap water connector 11 connects to the tap water pipe to replenish the chilled water tank 12. The tap water in the chilled water tank 12 is pressurized and circulated by the chilled water pump 13 after passing through the steel pipe 7. The pressurized chilled water enters the chilled water separator 14, where it is divided into several groups that enter the indoor units with cooling demand to release and absorb heat. During this process, the corresponding cooling solenoid valves 18 at the inlet and outlet of the indoor unit 16 with cooling demand open, while the corresponding heating solenoid valves 17 at the inlet and outlet of the indoor unit 16 with cooling demand close. The chilled water from the several cooling indoor units enters the chilled water collector 15, which in turn enters the chilled water tank 12, completing one cooling chilled water cycle.

[0026] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. An air-source heat pump multi-split heating system, comprising a compressor (1), characterized in that: The outlet end of the compressor (1) is fixedly connected to a copper pipe (2). One end of the copper pipe (2) is connected to an outdoor water-side heat-releasing condenser (3). One end of the outdoor water-side heat-releasing condenser (3) is connected to an electronic expansion valve (4) through the copper pipe (2). One end of the electronic expansion valve (4) is connected to an outdoor heat-absorbing evaporator (5) through the copper pipe (2). One end of the outdoor heat-absorbing evaporator (5) is connected to the inlet end of the compressor (1) through the copper pipe (2). A steel pipe (7) is connected to the outdoor water-side heat-releasing condenser (3). One end of the steel pipe (7) is respectively equipped with a heat circulation component and a refrigeration circulation component.

2. The air source heat pump multi-split heating system according to claim 1, characterized in that: The heat circulation assembly includes a hot water pump (8), a hot water distributor (9), and a hot water collector (10). The hot water pump (8) is connected to one end of a steel pipe (7). One end of the hot water distributor (9) is connected to the inlet of the hot water pump (8) through a steel pipe (7). The other end of the hot water distributor (9) is connected to several indoor units (16) through several steel pipes (7). One end of the hot water collector (10) is connected to one end of several indoor units (16) through several steel pipes (7). The other end of the hot water collector (10) is connected to the outdoor water-side heat release condenser (3).

3. The air source heat pump multi-split heating system according to claim 2, characterized in that: Each of the indoor units (16) is connected to a hot water distributor (9) and a hot water collector (10) via a steel pipe (7) and a heating solenoid valve (17).

4. The air source heat pump multi-split heating system according to claim 2, characterized in that: The refrigeration cycle assembly includes a water inlet connector (11), a cold water tank (12), and a cold water pump (13). The water inlet connector (11) is installed on the cold water tank (12) via a steel pipe (7). One end of the cold water pump (13) is connected to one end of the cold water tank (12) via a steel pipe (7). The other end of the cold water pump (13) is connected to a cold water distributor (14) via a steel pipe (7). One end of the cold water distributor (14) is connected to several indoor units (16) via several steel pipes (7). Several indoor units (16) are connected to a cold water collector (15) via several steel pipes (7). One end of the cold water collector (15) is connected to the other end of the cold water tank (12) via a steel pipe (7).

5. The air source heat pump multi-split heating system according to claim 2, characterized in that: Each of the indoor units (16) is connected to a cold water distributor (14) and a cold water collector (15) via a steel pipe (7) and a refrigeration solenoid valve (18).

6. The air source heat pump multi-split heating system according to claim 1, characterized in that: A heat-absorbing fan (6) is installed on one side of the outdoor heat-absorbing evaporator (5).

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