CN210772618U - Simple and efficient bidirectional super-cooling air source heat pump - Google Patents
Simple and efficient bidirectional super-cooling air source heat pump Download PDFInfo
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- CN210772618U CN210772618U CN201922017621.1U CN201922017621U CN210772618U CN 210772618 U CN210772618 U CN 210772618U CN 201922017621 U CN201922017621 U CN 201922017621U CN 210772618 U CN210772618 U CN 210772618U
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Abstract
The utility model provides a simple high-efficient two-way subcooling air source heat pump sets up one-way expansion valve respectively at subcooling heat exchanger both ends, through the conversion control of cross valve, the unit can constitute air source heating backheating subcooling circulation circuit, air source refrigeration backheating subcooling circulation circuit respectively, all has good subcooling effect when heating and refrigeration, and simple structure is reliable moreover, energy-conservation, efficient, with low costs, all energy-efficient and simple reliable low cost when unit refrigeration heats. The technical proposal of the utility model is also suitable for household air conditioners.
Description
Technical Field
The utility model belongs to the technical field of the heat pump technique and specifically relates to a simple high-efficient two-way supercooling air source heat pump.
Background
In a refrigerating/heating system, the supercooling degree of condensed high-pressure liquid has the influence on refrigerating/heating capacity and efficiency by about 20 percent. The cold and heat sources of the air source heat pump are all from air, the outstanding advantage is that the air is inexhaustible as a heat/cold source, the air source heat pump can heat and refrigerate by converting a circulation loop through a four-way valve, and even in a low-temperature environment, the low-temperature air source heat pump adopts an air injection enthalpy-increasing technology, so that the heating is efficient, energy-saving and environment-friendly; the air source heat pump system has the defects that the existing air source heat pump system usually has a good one-way supercooling effect only in a heating mode, and does not have a good supercooling effect when in a refrigerating mode of the air source heat pump, so that the refrigerating efficiency is low, the refrigerating efficiency is high, the energy consumption is high, the unit power is large in matching, and the overall investment cost is high when the existing air source heat pump is used as a combined cooling and heating system. However, the conventional cooling and heating air conditioning system usually has only a one-way supercooling effect in the cooling mode, and has no good supercooling effect in the heating mode, low heating efficiency and high energy consumption. At present, the effect of enabling the air source heat pump to have bidirectional supercooling is achieved by arranging one supercooling heat exchanger or by arranging a plurality of four-way valves or by a plurality of electromagnetic valves or a plurality of conversion valves, and the measures are high in cost or complex in system structure, or cold and heat on two sides of the conversion valves in the system can be mutually consumed through heat transfer of the conversion valve bodies, so that the efficiency of the unit is reduced.
The prior art needs to be improved and developed.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: the simple and efficient bidirectional supercooling air source heat pump solves the problem that the conventional air source heat pump cannot perform bidirectional supercooling during cooling and heating, overcomes the defects that a bidirectional supercooling device in the prior art is high in cost and complex in structure, and cold and heat on two sides of a conversion valve can be mutually consumed by transferring heat through a conversion valve body, achieves the purposes that the air source heat pump has good supercooling effects during heating and cooling, and is simple and reliable in structure, free of valve heat transfer consumption, high in efficiency and low in cost.
The technical solution of the utility model is that: a simple and efficient two-way supercooling air source heat pump mainly comprises a compressor, a four-way valve, an indoor side heat exchanger, a first expansion valve, a first one-way valve, a supercooling heat exchanger, a second expansion valve, a second one-way valve, an outdoor side heat exchanger, a pipeline, a gas-liquid buffer device and a detection control system which are connected in a system; two ends of the supercooling heat exchanger are respectively provided with a one-way valve and an expansion valve, and the unit can respectively form an air source heating regenerative supercooling circulation loop and an air source refrigerating regenerative supercooling circulation loop. A water-cooled condenser can be added on the exhaust pipeline of the compressor in front of the four-way valve to be used as a hot water heat recoverer, and the byproduct hot water can be used for domestic hot water and the like; the indoor heat exchanger adopts a water heat exchanger, and can also adopt an air source finned heat exchanger and the like; the expansion valve can also be replaced by a capillary tube; the supercooling heat exchanger can adopt a high-efficiency plate heat exchanger, a sleeve heat exchanger and the like, and can also adopt a gas-liquid separator with a heat exchange function; the outdoor heat exchanger adopts an air source finned heat exchanger, and can also adopt a water source heat exchanger and the like.
The air source heating backheating and supercooling circulation loop comprises a compressor exhaust port, a four-way valve, an indoor side heat exchanger, a first one-way valve, a supercooling heat exchanger, a second expansion valve, an outdoor side heat exchanger, a four-way valve, a supercooling heat exchanger and a compressor air inlet which are sequentially connected through pipelines and form the loop. In the air source heating mode, the air source heating backheating supercooling circulation loop circularly runs; in the operation process, the four-way valve is switched, the outdoor heat exchanger is controlled to be communicated with the air inlet of the compressor through the supercooling heat exchanger in the air source refrigeration mode, the indoor heat exchanger is controlled to be communicated with the air outlet of the compressor, high-pressure hot gas is discharged from the air outlet of the compressor, the high-pressure hot gas releases heat in the indoor heat exchanger for condensation and liquefaction, high-temperature high-pressure liquid refrigerant flows into the supercooling heat exchanger through the first one-way valve for continuous cooling, high-temperature high-pressure liquid refrigerant exchanges heat with low-temperature low-pressure refrigerant in the supercooling heat exchanger, the supercooled high-pressure liquid refrigerant flows into the outdoor heat exchanger through the throttling of the second expansion valve, the heat is absorbed and evaporated into low-temperature low-pressure gaseous refrigerant, the low-temperature low-pressure gaseous refrigerant flows into the supercooling, and the heat absorption is continued to become superheated low-pressure steam, and the superheated low-pressure steam is sucked into the air inlet of the compressor.
The air source refrigeration backheating and supercooling circulation loop comprises a compressor exhaust port, a four-way valve, an outdoor side heat exchanger, a second one-way valve, a supercooling heat exchanger, a first expansion valve, an indoor side heat exchanger, a four-way valve, a supercooling heat exchanger and a compressor air inlet which are sequentially connected through pipelines and form the loop. In the air source refrigeration mode, the air source refrigeration backheating supercooling circulation loop circularly operates; in the operation process, the four-way valve is switched, the indoor heat exchanger is controlled to be communicated with the air inlet of the compressor through the supercooling heat exchanger in the air source refrigeration mode, the outdoor heat exchanger is controlled to be communicated with the air outlet of the compressor, high-pressure hot gas is discharged from the air outlet of the compressor, the high-pressure hot gas releases heat in the outdoor heat exchanger for condensation and liquefaction, high-temperature high-pressure liquid refrigerant flows into the supercooling heat exchanger through the second one-way valve for continuous cooling, high-temperature high-pressure liquid refrigerant exchanges heat with low-temperature low-pressure refrigerant in the supercooling heat exchanger, the supercooled high-pressure liquid refrigerant flows into the indoor heat exchanger through the first expansion valve in a throttling mode, the heat is absorbed and evaporated into low-temperature low-pressure gaseous refrigerant, the low-temperature low-pressure gaseous refrigerant flows into the, and the heat absorption is continued to become superheated low-pressure steam, and the superheated low-pressure steam is sucked into the air inlet of the compressor.
The technical scheme can also be applied to an enhanced vapor injection air source heat pump system, the supercooling heat exchanger is an economizer, a high-pressure liquid refrigerant is led out from any position between the first expansion valve and the second expansion valve and is injected into a low-pressure pipeline of the supercooling heat exchanger through the liquid injection enhanced vapor expansion valve, and the evaporated low-pressure gaseous refrigerant enters a middle gas orifice of the compressor. The technical scheme can also be applied to a cooling and heating air conditioning system. The technical scheme can also be applied to a small household air conditioning system, the supercooling heat exchanger is a gas-liquid separator, a first expansion valve and a second expansion valve are not needed, the capillary tube is used as a bidirectional expansion throttling device, and meanwhile, the capillary tube is also used as a heat exchange tube and is arranged in the gas-liquid separator or fixed outside the gas-liquid separator, so that the high-temperature high-pressure liquid refrigerant passing through the expansion valve exchanges heat with the low-pressure refrigerant in the gas-liquid separator, the high-temperature high-pressure liquid refrigerant obtains the supercooling degree, the low-temperature gaseous refrigerant obtains the superheat degree, the system energy efficiency can be effectively improved, and.
The utility model has the advantages that: the simple and efficient bidirectional supercooling air source heat pump has good supercooling effect during heating and refrigerating, and is simple and reliable in structure, energy-saving, high in efficiency and low in cost.
Drawings
FIG. 1 is a schematic view of the process flow of the present invention;
description of reference numerals: 1. the system comprises a compressor, a four-way valve 2, an indoor side heat exchanger 3, a first expansion valve 4, a first one-way valve 5, a supercooling heat exchanger 6, a second expansion valve 7, a second one-way valve 8 and an outdoor side heat exchanger 9.
Detailed Description
Example (b): referring to fig. 1, a simple and efficient two-way supercooling air source heat pump mainly comprises a compressor 1, a four-way valve 2, an indoor side heat exchanger 3, a first expansion valve 4, a first one-way valve 5, a supercooling heat exchanger 6, a second expansion valve 7, a second one-way valve 8, an outdoor side heat exchanger 9, and further comprises a pipeline, a gas-liquid buffer device and a detection control system which are connected in the system; two ends of the supercooling heat exchanger 6 are respectively provided with a one-way valve and an expansion valve, and the unit can respectively form an air source heating regenerative supercooling circulation loop and an air source refrigerating regenerative supercooling circulation loop. The indoor heat exchanger 3 adopts a high-efficiency tank, the supercooling heat exchanger 6 adopts a double-pipe heat exchanger, and the outdoor heat exchanger 9 adopts a fin type heat exchanger.
The air source heating backheating supercooling circulation loop comprises an exhaust port of a compressor 1, a four-way valve 2, an indoor side heat exchanger 3, a first one-way valve 5, a supercooling heat exchanger 6, a second expansion valve 7, an outdoor side heat exchanger 9, a four-way valve 2, a supercooling heat exchanger 6 and an air inlet of the compressor 1 which are sequentially connected through pipelines and form the loop. In the air source heating mode, the air source heating backheating supercooling circulation loop circularly runs; in the operation process, the four-way valve 2 is used for switching, the outdoor heat exchanger 9 is controlled to be communicated with the air inlet of the compressor 1 through the supercooling heat exchanger 6 in the air source refrigeration mode, the indoor heat exchanger 3 is controlled to be communicated with the air outlet of the compressor 1, high-pressure hot gas is discharged from the air outlet of the compressor 1, the high-pressure hot gas exchanges heat with water in the indoor heat exchanger 3 to release heat, is condensed and liquefied, high-temperature and high-pressure liquid refrigerant flows into the supercooling heat exchanger 6 through the first one-way valve 5 to be continuously cooled, high-temperature and high-pressure liquid refrigerant exchanges heat with low-temperature and low-pressure refrigerant in the supercooling heat exchanger 6, the supercooled high-pressure liquid refrigerant flows into the outdoor heat exchanger 9 through the second expansion valve 7 in a throttling mode to exchange heat with outdoor air, absorbs heat and is evaporated into, the low-temperature low-pressure refrigerant exchanges heat with the high-temperature high-pressure liquid refrigerant in the supercooling heat exchanger 6, the heat is continuously absorbed to form superheated low-pressure steam, and the superheated low-pressure steam is sucked into the air inlet of the compressor 1.
The air source refrigeration backheating and supercooling circulation loop comprises an exhaust port of a compressor 1, a four-way valve 2, an outdoor side heat exchanger 9, a second one-way valve 8, a supercooling heat exchanger 6, a first expansion valve 4, an indoor side heat exchanger 3, a four-way valve 2, a supercooling heat exchanger 6 and an air inlet of the compressor 1 which are sequentially connected through pipelines and form the loop. In the air source refrigeration mode, the air source refrigeration backheating supercooling circulation loop circularly operates; in the operation process, the four-way valve 2 is used for switching, the indoor side heat exchanger 3 is controlled to be communicated with the air inlet of the compressor 1 through the supercooling heat exchanger 6 in the air source refrigeration mode, the outdoor side heat exchanger 9 is controlled to be communicated with the air outlet of the compressor 1, high-pressure hot gas is discharged from the air outlet of the compressor 1, the high-pressure hot gas releases heat in the outdoor side heat exchanger 9 to supply outdoor air and then is condensed into high-temperature high-pressure liquid, the high-temperature high-pressure liquid refrigerant flows into the supercooling heat exchanger 6 through the second one-way valve 8 to be continuously cooled, the high-temperature high-pressure liquid refrigerant and the low-temperature low-pressure refrigerant exchange heat in the supercooling heat exchanger 6, the supercooled high-pressure liquid refrigerant flows into the indoor side heat exchanger 3 through the first expansion valve 4 for heat exchange with water, absorbs heat and, the low-temperature low-pressure refrigerant exchanges heat with the high-temperature high-pressure liquid refrigerant in the supercooling heat exchanger 6, the heat is continuously absorbed to form superheated low-pressure steam, and the superheated low-pressure steam is sucked into the air inlet of the compressor 1.
The above detailed description is specific to possible embodiments of the present invention, and the embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention should be included within the scope of the present invention.
Claims (4)
1. A simple and efficient two-way supercooling air source heat pump comprises a compressor, a four-way valve, an indoor side heat exchanger, a first expansion valve, a first one-way valve, a supercooling heat exchanger, a second expansion valve, a second one-way valve, an outdoor side heat exchanger, pipelines, a gas-liquid buffering device and a detection control system which are connected in the system.
2. The simple and efficient bidirectional supercooling air source heat pump according to claim 1, wherein the air source heating regenerative supercooling circulation loop comprises a compressor exhaust port, a four-way valve, an indoor side heat exchanger, a first one-way valve, a supercooling heat exchanger, a second expansion valve, an outdoor side heat exchanger, a four-way valve, a supercooling heat exchanger and a compressor air inlet which are sequentially connected through pipelines and form the loop.
3. The simple and efficient bidirectional supercooling air source heat pump according to claim 1, wherein the air source refrigeration heat regeneration supercooling circulation loop comprises a compressor exhaust port, a four-way valve, an outdoor side heat exchanger, a second one-way valve, a supercooling heat exchanger, a first expansion valve, an indoor side heat exchanger, a four-way valve, a supercooling heat exchanger and a compressor air inlet which are sequentially connected through pipelines and form the loop.
4. A simple and efficient bi-directional subcooling air source heat pump as described in claim 1, wherein a water cooled condenser is added to the compressor exhaust line before the four-way valve to act as a hot water recuperator.
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| CN201922017621.1U CN210772618U (en) | 2019-11-21 | 2019-11-21 | Simple and efficient bidirectional super-cooling air source heat pump |
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| CN201922017621.1U CN210772618U (en) | 2019-11-21 | 2019-11-21 | Simple and efficient bidirectional super-cooling air source heat pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701709A (en) * | 2019-11-21 | 2020-01-17 | 罗良宜 | Simple and efficient bidirectional super-cooling air source heat pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701709A (en) * | 2019-11-21 | 2020-01-17 | 罗良宜 | Simple and efficient bidirectional super-cooling air source heat pump |
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