CN203595316U - Screw rod type total heat recovery air-cooled heat pump air conditioning unit - Google Patents

Screw rod type total heat recovery air-cooled heat pump air conditioning unit Download PDF

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Publication number
CN203595316U
CN203595316U CN201320769275.2U CN201320769275U CN203595316U CN 203595316 U CN203595316 U CN 203595316U CN 201320769275 U CN201320769275 U CN 201320769275U CN 203595316 U CN203595316 U CN 203595316U
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China
Prior art keywords
heat
air
valve
screw compressor
heat exchanger
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Expired - Fee Related
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CN201320769275.2U
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Chinese (zh)
Inventor
李国瑞
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Jin Da Technology (hunan) Co Ltd
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Jin Da Technology (hunan) Co Ltd
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Priority to CN201320769275.2U priority Critical patent/CN203595316U/en
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Expired - Fee Related legal-status Critical Current
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Abstract

A screw rod type total heat recovery air-cooled heat pump air conditioning unit comprises a compressor, an oil separator, a heat recovery device, a four-way reversing valve, solenoid valves, a fin type heat exchanger, a check valve assembly and an evaporator. The heat recovery device is connected between the screw rod type compressor and the four-way reversing valve in series, an exhaust port of the screw rod type compressor is connected with the oil separator, a refrigerant outlet of the oil separator is connected with the heat recovery device, an oil path outlet of the oil separator is connected with an air return end of the screw rod type compressor through the third solenoid and a second drying filter, and the heat recovery device is a shell and tube heat exchanger or a plate heat exchanger or a double-pipe heat exchanger. A first connector of the first solenoid valve is connected to a refrigerant outlet of the heat recovery device through a pipeline, and the other connector of the first solenoid valve is connected to a refrigerant inlet of a liquid reservoir through a pipeline. A draught fan is arranged on one side of the fin type heat exchanger. The screw rod type total heat recovery air-cooled heat pump air conditioning unit saves energy resources, is economical and practical and has good technical economy values and commercialization development and application prospects.

Description

The full recuperation of heat air-cooled heat-pump air-conditioner of a kind of screw group
Technical field
The utility model be integrate refrigeration, refrigeration+hot water, heat, heat+hot water, the full recuperation of heat air-cooled heat-pump air-conditioner of a kind of screw group of hot water five functions, belong to air-conditioning technical field.
Background technology
Conventional air cool heat pump air conditioning system, need to consume electric energy and a large amount of condenser heats are discharged in atmosphere simultaneously, this method of operation has caused the thermal pollution of atmosphere, has aggravated city " heat island " effect, and domestic hot-water's preparation simultaneously needs again to consume a large amount of primary energy.Utilize Condensation Heat Recovery Technology, the condensation heat of discharge is reclaimed to the preparation domestic hot-water that is used, not only can save the energy, reduce CO2 emission, and can protection of the environment.The domestic transformation that mainly concentrates on household small-size heat recovery air conditioner unit at present, reclaims for the condensation heat of large-scale unit the transformation that often only relates to handpiece Water Chilling Units, and little to the research of large-sized test device for air-cooled heat pump unit Condensation Heat Recovery Technology.Current common air-cooled heat-pump air-conditioner group is applied in cold area, there will be heat supply deficiency winter, because compressor exhaust temperature is too high, causes unit under low temperature environment normally to move.
Summary of the invention
For the condensation heat recovery that solves existing large-scale unit often only relates to handpiece Water Chilling Units the problems referred to above, the utility model provides the full recuperation of heat air-cooled heat-pump air-conditioner of a kind of screw group, so that air-conditioning unit makes full use of used heat in the time freezing summer, reach energy-saving and cost-reducing object, avoid machine operation to cause the thermal pollution to environment simultaneously; Under low temperature environment, can provide again enough heating capacity and water heating abilities in the winter time.
For solving its technical problem, the technical solution adopted in the utility model is: utilize comprehensive heat pump techniques and Condensation Heat Recovery Technology, conventional Air-Cooled Heat Pump Unit is improved, adopt the composite condensation technology of " air-cooled+water-cooled ", heat regenerator is connected between screw compressor and four-way change-over valve, recovering condensing heat is with preparation domestic hot-water, and realize refrigeration, refrigeration+hot water, heat, heat+hot water, hot water five functions pattern is in the heat pump air conditioner unit of one;
The full recuperation of heat air-cooled heat-pump air-conditioner of a kind of screw group of designing, is made up of screw compressor, oil eliminator, heat regenerator, four-way change-over valve, finned heat exchanger, check valve assembly, evaporimeter, liquid reservoir, two devices for drying and filtering, electric expansion valve, four magnetic valves, high temperature heating power expansion valve, vapour liquid separator and its annexes; Its feature is: 1. described in, heat regenerator is connected between screw compressor and four-way change-over valve, the exhaust outlet of screw compressor connects oil eliminator, the outlet of oil eliminator cold-producing medium is connected with heat regenerator, the oil circuit outlet of oil eliminator is connected with the air return end of screw compressor with the second device for drying and filtering by the 3rd magnetic valve, and described heat regenerator is any one in shell and tube exchanger, plate type heat exchanger or double-tube heat exchanger; One interface of the first magnetic valve is connected in the outlet of heat regenerator cold-producing medium by pipeline, its another interface is connected in the import of liquid reservoir cold-producing medium by pipeline; One side of described finned heat exchanger is equipped with blower fan; Described check valve assembly is connected to form by the first check valve, the second check valve, the 3rd check valve and the 4th check valve and pipeline thereof, and four check valves connect into passageway bridge; The oil circuit outlet of described oil eliminator is connected with the air return end of screw compressor with the second device for drying and filtering by the 3rd magnetic valve;
2. described in, according to the back pressure of screw compressor, certain sets value to control opening or stopping of the first magnetic valve to low-pressure sensor;
3. described in, electric expansion valve can adopt magnetic valve+thermal expansion valve member to substitute;
4. described in, high temperature heating power expansion valve is connected with the second magnetic valve, the other end of high temperature heating power expansion valve is connected with screw compressor air return end, the other end of the 2nd magnetic valve is in parallel with the 4th magnetic valve one end, be connected on the refrigerant tubing between the first device for drying and filtering and electric expansion valve, the other end of the 4th magnetic valve is connected with mouth spray in the middle of screw compressor;
5. blower fan is equipped with in a side of finned heat exchanger;
6. described in, annex is: blower fan, heat-exchanger pump and water pump of air conditioner.
The beneficial effects of the utility model: 1, due to the utilization of used heat, reach energy-saving and cost-reducing object, avoid machine operation to cause the thermal pollution to environment simultaneously; 2, under low temperature environment, can provide enough heating capacity and water heating abilities, guaranteed can meet user to hot water under low temperature environment and heated demand; 3, owing to adopting refrigeration, refrigeration+hot water, heat, heat+hot water, hot water five functions pattern is in the design of one, the investment of heating equipment separately, has saved user's initial stage equipment investment.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, utility model is described further:
Described embodiment is only not used in restriction scope of the present utility model for the utility model is described; In addition should be understood that those skilled in the art can make various changes or modifications the utility model after having read the content of the utility model instruction, these equivalent form of values fall within the application's appended claims limited range equally;
Fig. 1 is structural representation of the present utility model.
In figure: 1, screw compressor, 2, oil eliminator, 3, heat regenerator, 4, four-way change-over valve, 5, the first magnetic valve, 6, finned heat exchanger, 7, check valve assembly, 8, evaporimeter, 9, liquid reservoir, 10, ball valve, 11, the first device for drying and filtering, 12, electric expansion valve, 13, vapour liquid separator, 14, the second magnetic valve, 15, high temperature heating power expansion valve, 16, the 3rd magnetic valve, 17, the second device for drying and filtering, 18, low-pressure sensor, 19, the 4th magnetic valve.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is elaborated:
Embodiment: the full air conditioner with heat pump for recovering heat group of screw of designing, as shown in Figure 1, unit is by screw compressor 1, oil eliminator 2, heat regenerator 3, four-way change-over valve 4, four magnetic valves 5, 14, 16, 19, finned heat exchanger 6, check valve assembly 7, evaporimeter 8, liquid reservoir 9, ball valve 10, two devices for drying and filtering 11, 17, electric expansion valve 12, vapour liquid separator 13, high temperature heating power expansion valve 15, low-pressure sensor 18 and connecting pipe and annex blower fan, heat-exchanger pump and water pump of air conditioner composition, their annexation is: the exhaust outlet of screw compressor 1 is connected with the refrigerant inlet of oil eliminator 2, the refrigerant outlet of oil eliminator 2 is connected with heat regenerator 3 refrigerant inlet, the outlet of heat regenerator 3 cold-producing mediums is connected with a interface of four-way change-over valve 4, the b interface of four-way change-over valve 4 is connected with the steam pipe interface of finned heat exchanger 6, the liquid interface tube of finned heat exchanger 6 is connected with the A interface of check valve assembly 7, the B interface of check valve assembly 7 is connected with the refrigerant inlet of liquid reservoir 9, the refrigerant outlet of liquid reservoir 9 is connected with ball valve 10, another interface of ball valve 10 is connected with the refrigerant inlet of the first device for drying and filtering 11, the refrigerant outlet of the first device for drying and filtering 11 is connected with the refrigerant inlet of electric expansion valve 12, the refrigerant outlet of electric expansion valve 12 is connected with the E interface of check valve assembly 7, the D interface of check valve assembly 7 is connected with the refrigerant inlet of evaporimeter 8, the refrigerant outlet of evaporimeter 8 is connected with the d interface of four-way change-over valve 4, the c interface of four-way change-over valve 4 is connected with the refrigerant inlet of vapour liquid separator 13, the refrigerant outlet of vapour liquid separator 13 is connected with the gas returning port of screw compressor 1, the oil export of oil eliminator 2 is connected with screw compressor 1 air return end with the second device for drying and filtering 17 by the 3rd magnetic valve 16, high temperature heating power expansion valve 15 is connected with the second magnetic valve 14, the other end of high temperature heating power expansion valve 15 is connected with screw compressor 1 air return end, the other end of the second magnetic valve 14 is in parallel with the 4th magnetic valve 19 one end, be connected on the refrigerant tubing between the first device for drying and filtering 11 and electric expansion valve 12, the other end of the 4th magnetic valve 19 is connected with mouth spray in the middle of screw compressor 1, and low-pressure sensor 18 is connected in the gas returning port of compressor, one interface of the first magnetic valve 5 is connected in the outlet of heat regenerator cold-producing medium by pipeline, its another interface is connected in the import of liquid reservoir cold-producing medium by pipeline.
Lower mask body is introduced several functional mode running of the present utility model:
1, refrigeration mode: the first magnetic valve 5 cuts out, cold-producing medium enters oil eliminator 2 through the blast pipe of screw compressor 1, through heat regenerator 3, hot water air pump inoperative, then pass through a interface of four-way change-over valve 4, enter finned heat exchanger 6 from b, blower fan work, refrigerant liquid after being condensed flows into liquid reservoir 9 by the A interface of check valve assembly 7 through B interface, filter through ball valve 9 and the first device for drying and filtering 11, the electric expansion valve 12 of flowing through carries out becoming low temperature low pressure liquid refrigerants after throttling, low temperature low pressure liquid refrigerants is through the E interface of check valve assembly 7, entering evaporimeter 8 from the D interface of check valve assembly 7 evaporates and becomes low-temp low-pressure gas-liquid mixture and enter vapour liquid separator 13 by four-way change-over valve 4 and carry out vapor-liquid separation, then gas part enters screw compressor 1 from compressor suction duct, complete thus a kind of refrigeration cycle, the second magnetic valve 14 and the 4th magnetic valve 19 difference opening respectively or stopping according to the delivery temperature of compressor, the oil that oil eliminator 2 is separated returns from the gas returning port of screw compressor 1 after the second device for drying and filtering 17 filters by the start-stop of the 3rd magnetic valve 16,
2, refrigeration+hot water pattern: in refrigerating operaton mode process, heat-exchanger pump work, blower fan quits work, the high temperature refrigerant steam that enters heat regenerator 3 heats required hot water, reach with this object of producing domestic hot-water, also met the demand of room air conditioner simultaneously, not only avoided a large amount of hot gas to discharge in atmosphere, and increased the degree of supercooling of cold-producing medium, improve the efficiency of unit.The first magnetic valve 5 is opened or stops according to the force value of low-pressure sensor 18, if when not needing hot water preparing, heat-exchanger pump stops, blower fan open, the first magnetic valve 5 stops, like this with regard to summer normal refrigeration mode air-conditioning the same;
3, heating mode: the first magnetic valve 5 cuts out, cold-producing medium enters oil eliminator 2 through the blast pipe of screw compressor 1, through heat regenerator 3, hot water air pump inoperative, then pass through a interface of four-way change-over valve 4, enter evaporimeter 8 from d mouth, water pump of air conditioner work, refrigerant liquid after being condensed flows into liquid reservoir 9 by the D interface of check valve assembly 7 through B interface, filter through ball valve 10 and the first device for drying and filtering 11, the electric expansion valve 12 of flowing through carries out becoming low temperature low pressure liquid refrigerants after throttling, low temperature low pressure liquid refrigerants is through the E interface of check valve assembly 7, enter finned heat exchanger 6 from the A interface of check valve assembly 7, blower fan work, cold-producing medium heat absorption evaporation becomes low-temp low-pressure gas-liquid mixture and enters vapour liquid separator 13 by four-way change-over valve 4 and carry out vapor-liquid separation, then gas part enters screw compressor 1 from compressor suction duct, complete thus one and heat circulation.The second magnetic valve 14 and the 4th magnetic valve 19 are difference opened respectively or stop according to the delivery temperature of compressor, and the oil that oil eliminator 2 is separated returns from the gas returning port of screw compressor 1 after the second device for drying and filtering 17 filters by the start-stop of the 3rd magnetic valve 16;
4, heat+hot water pattern: in heating operation mode process, heat-exchanger pump work, water pump of air conditioner quits work, enter the high temperature refrigerant steam of heat regenerator 3 to required hot water heating, reach with this object of producing domestic hot-water, if when not needing hot water preparing, heat-exchanger pump stops, water pump of air conditioner work, so just the same with the air-conditioning of heating mode;
5, water heating pattern: when independent water heating, operation principle is moved as heating mode, and water pump of air conditioner quits work, and heat-exchanger pump work enters the high temperature refrigerant steam of heat regenerator 3 to required hot water heating, reaches with this object of producing domestic hot-water.

Claims (5)

1. the full recuperation of heat air-cooled heat-pump air-conditioner of a screw group, is made up of screw compressor, oil eliminator, heat regenerator, four-way change-over valve, finned heat exchanger, check valve assembly, evaporimeter, liquid reservoir, two devices for drying and filtering, electric expansion valve, four magnetic valves, high temperature heating power expansion valve, vapour liquid separator and its annexes; It is characterized in that: described heat regenerator is connected between screw compressor and four-way change-over valve, the exhaust outlet of screw compressor connects oil eliminator, the outlet of oil eliminator cold-producing medium is connected with heat regenerator, the oil circuit outlet of oil eliminator is connected with the air return end of screw compressor with the second device for drying and filtering by the 3rd magnetic valve, and described heat regenerator is any one in shell and tube exchanger, plate type heat exchanger or double-tube heat exchanger; One interface of the first magnetic valve is connected in the outlet of heat regenerator cold-producing medium by pipeline, its another interface is connected in the import of liquid reservoir cold-producing medium by pipeline, set value to control opening or stopping of the first magnetic valve with low-pressure sensor according to the back pressure of screw compressor; One side of described finned heat exchanger is equipped with blower fan; Described check valve assembly is connected to form by the first check valve, the second check valve, the 3rd check valve and the 4th check valve and pipeline thereof, and four check valves connect into passageway bridge; The oil circuit outlet of described oil eliminator is connected with the air return end of screw compressor with the second device for drying and filtering by the 3rd magnetic valve.
2. the full recuperation of heat air-cooled heat-pump air-conditioner of a kind of screw according to claim 1 group, is characterized in that: described electric expansion valve adopts magnetic valve+thermal expansion valve member to substitute.
3. the full recuperation of heat air-cooled heat-pump air-conditioner of a kind of screw according to claim 1 group, it is characterized in that: described high temperature heating power expansion valve is connected with the second magnetic valve, the other end of high temperature heating power expansion valve is connected with screw compressor air return end, the other end of the second magnetic valve is in parallel with the 4th magnetic valve one end, be connected on the refrigerant tubing between the first device for drying and filtering and electric expansion valve, the other end of the 4th magnetic valve is connected with mouth spray in the middle of screw compressor.
4. the full recuperation of heat air-cooled heat-pump air-conditioner of a kind of screw according to claim 1 group is characterized in that: a side of finned heat exchanger is equipped with blower fan.
5. the full recuperation of heat air-cooled heat-pump air-conditioner of a kind of screw according to claim 1 group is characterized in that: described annex is: blower fan, heat-exchanger pump and water pump of air conditioner.
CN201320769275.2U 2013-11-30 2013-11-30 Screw rod type total heat recovery air-cooled heat pump air conditioning unit Expired - Fee Related CN203595316U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320769275.2U CN203595316U (en) 2013-11-30 2013-11-30 Screw rod type total heat recovery air-cooled heat pump air conditioning unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320769275.2U CN203595316U (en) 2013-11-30 2013-11-30 Screw rod type total heat recovery air-cooled heat pump air conditioning unit

Publications (1)

Publication Number Publication Date
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103615836A (en) * 2013-11-30 2014-03-05 金国达科技(湖南)有限公司 Screw type total heat recovery air cooled heat pump air conditioning unit
CN105180437A (en) * 2015-10-10 2015-12-23 程洪亮 Liquid-vapor energy device
CN112146301A (en) * 2020-09-22 2020-12-29 浙江国祥股份有限公司 Evaporative cold screw cold and hot water unit with total heat recovery

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103615836A (en) * 2013-11-30 2014-03-05 金国达科技(湖南)有限公司 Screw type total heat recovery air cooled heat pump air conditioning unit
CN103615836B (en) * 2013-11-30 2015-08-26 金国达科技(湖南)有限公司 A kind of screw total heat recovery air-cooled heat-pump air-conditioner group
CN105180437A (en) * 2015-10-10 2015-12-23 程洪亮 Liquid-vapor energy device
CN112146301A (en) * 2020-09-22 2020-12-29 浙江国祥股份有限公司 Evaporative cold screw cold and hot water unit with total heat recovery

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140514

Termination date: 20161130

CF01 Termination of patent right due to non-payment of annual fee