CN103983040A - Water cooling and heating unit for air cooled heat pump - Google Patents

Water cooling and heating unit for air cooled heat pump Download PDF

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Publication number
CN103983040A
CN103983040A CN201410146210.1A CN201410146210A CN103983040A CN 103983040 A CN103983040 A CN 103983040A CN 201410146210 A CN201410146210 A CN 201410146210A CN 103983040 A CN103983040 A CN 103983040A
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China
Prior art keywords
heat exchanger
air
communicated
interface
outlet
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CN201410146210.1A
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CN103983040B (en
Inventor
刘斌
吴静涛
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MAMMOTH (ZHEJIANG) AIR CONDITIONING Ltd
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MAMMOTH (ZHEJIANG) AIR CONDITIONING Ltd
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Abstract

The invention discloses a water cooling and heating unit for an air cooled heat pump. The water cooling and heating unit for the air cooled heat pump comprises an air compressor, a four-way valve, an air-side heat exchanger, a radiating fan, a drying filter, a liquid spraying type heat exchanger and an air-side heat exchanger cooler, wherein the liquid spraying type heat exchanger is provided with an oil return port, a refrigerant liquid outlet, a gas refrigerant port and a refrigerant liquid port; the gas refrigerant port is communicated with a first port of the four-way valve; an inlet of the air compressor is communicated with a second port of the four-way valve and the oil return port; an outlet of the air compressor is communicated with a third port of the four-way valve; a refrigerant liquid outlet is communicated with an inlet of the drying filter through a first one-way valve; the refrigerant liquid port is communicated with a first expansion valve; the first expansion valve is communicated with an outlet of the drying filter; an outlet of the air-side heat exchanger cooler is communicated with the inlet of the drying filter through a second one-way valve. The water cooling and heating unit for the air cooled heat pump is high in heat exchange efficiency and good in heat exchange effect.

Description

Air-cooled heat pump water chiller-heater units
Technical field
The present invention relates to a kind of air-cooled heat pump water chiller-heater units.
Background technology
Number of patent application is CN200710017199.9, the Chinese invention patent of the applying date: 2007-09-28 discloses a kind of low-temperature air-cooling heat pump unit, mainly comprise: compressor, four-way change-over valve, wind side finned heat exchanger, heat exchange blower fan, check valve a, check valve b, reservoir, device for drying and filtering, liquid-sighting glass, expansion valve a, expansion valve b, water-side heat, gas-liquid separator, magnetic valve, water inlet pipe, outlet pipe and system connecting line, the internal duct of its apoplexy side finned heat exchanger is made up of main heat exchanging pipe and ice-melt heat exchanging pipe, each parts of unit connect by system connecting line pipe arrangement, compressor outlet is connected to respectively in the import of four-way change-over valve and magnetic valve, the import of compressor is connected in the outlet of gas-liquid separator, the import of gas-liquid separator is connected in the outlet of four-way change-over valve, the outlet of magnetic valve is connected in the import of ice-melt heat exchanging pipe of wind side finned heat exchanger, the outlet of ice-melt heat exchanging pipe is connected on the entrance pipe of reservoir, the outlet of reservoir is connected in the import of device for drying and filtering, the outlet of device for drying and filtering is connected on liquid-sighting glass one port, another of liquid-sighting glass mouthful is connected to respectively in the import of expansion valve a and expansion valve b, the outlet of expansion valve a is connected to respectively in the outlet of the import of check valve a and the main heat exchanging pipe of wind side finned heat exchanger, the import of main heat exchanging pipe is connected on four-way change-over valve, the outlet of expansion valve b is connected to respectively in the import of check valve b and the outlet of water-side heat, the import of water-side heat is connected on four-way change-over valve, after being connected in parallel, the outlet of check valve a and check valve b is connected in the inlet ductwork of reservoir, the water inlet of water-side heat connects water inlet pipe, the delivery port of water-side heat connects outlet pipe.
In existing air-cooled heat pump water chiller-heater units, its water-side heat adopts shell-tube type dry type heat exchanger or plate type heat exchanger conventionally, simultaneously, in air-cooled heat pump water chiller-heater units, water-side heat time uses as evaporimeter in refrigeration, use, and the degree of superheat after traditional shell-tube type dry type heat exchanger or the evaporation of plate type heat exchanger cold-producing medium is larger in the time heating as condenser, heat exchange efficiency is lower, and whole unit operating efficiency is not high enough.
Summary of the invention
The object of the invention is, for the deficiencies in the prior art part, provides a kind of air-cooled heat pump water chiller-heater units, and the heat exchange efficiency of whole unit is high, operating efficiency is high.
In order to solve the problems of the technologies described above, technical scheme of the present invention is as follows: air-cooled heat pump water chiller-heater units, comprise air compressor, cross valve, air-side heat exchanger, for cooling fan and device for drying and filtering to described air-side heat exchanger heat radiation, also comprise and drench liquid formula heat exchanger and air-side heat exchanger cooler, described pouring liquid formula heat exchanger is provided with oil return interface, refrigerant liquid outlet, gas refrigerant interface and refrigerant liquid interface, the first interface of described gas refrigerant interface and described cross valve is communicated with, the second interface of the import of described air compressor and described cross valve, oil return interface is communicated with, the 3rd interface of the outlet of described air compressor and described cross valve is communicated with, the 4th interface of described cross valve and the import of described air-side heat exchanger are communicated with, described refrigerant liquid outlet is communicated with by the import of the first check valve and described device for drying and filtering, the first interface of described refrigerant liquid interface and the first expansion valve is communicated with, the second interface of described the first expansion valve and the outlet of described device for drying and filtering are communicated with, the outlet of described air-side heat exchanger cooler is communicated with by the import of the second check valve and described device for drying and filtering, the second interface of described the first expansion valve is communicated with by the import of the 3rd check valve and described the second check valve, the import of described air-side heat exchanger cooler and the outlet of described air-side heat exchanger are communicated with.
Unit of the present invention, arrange and drench liquid formula heat exchanger and air-side heat exchanger cooler, in carrying out work, air-side heat exchanger cooler is in the time of kind of refrigeration cycle, cold-producing medium is entering air-side heat exchanger cooler after air-side heat exchanger is condensed into liquid, further reduce fluid temperature, improve degree of supercooling, thereby increase the refrigerating capacity of unit; And heating circulation time, cold-producing medium is entering air-side heat exchanger cooler through filtering after liquid formula heat exchanger is condensed into liquid, can prevent that air-side heat exchanger bottom from freezing, and is conducive to the frosting situation of slow down air side heat exchanger, improve the defrosting speed of air-side heat exchanger, shorten defrosting time; Ensure normal, the efficient operation of whole unit; Simultaneously, in the time of kind of refrigeration cycle, refrigerant liquid after throttling enters in pouring liquid formula heat exchanger from drenching the refrigerant liquid interface of liquid formula heat exchanger, inner through distributor at heat exchanger, refrigerant liquid sprinkle is in heat exchanger tube outside, carry out heat exchange with recirculated water or other refrigerating mediums in heat exchanger tube, the gas refrigerant after heat exchange evaporation turns back to compressor through the gas refrigerant interface that filters liquid formula heat exchanger; Heating circulation time, refrigerant gas enters pouring liquid formula heat exchanger through filtering the gas refrigerant interface of liquid formula heat exchanger, carry out heat exchange with recirculated water or other refrigerating mediums in heat exchanger tube, be condensed into liquid state, liquid refrigerant uses and flows out from drenching when the refrigerant liquid outlet of liquid formula heat exchanger heats; Meanwhile, the bottom of drenching liquid formula heat exchanger is also provided with oil return pipe interface, the compressor oil that remains in heat exchanger can be flow back into compressor through this interface; Ensure normal, the efficient operation of compressor.
As preferably, between the outlet of described air-side heat exchanger and the import of described air-side heat exchanger cooler, be provided with the 4th check valve and the second expansion valve with described the 4th check valve parallel connection.
As preferably, between the 3rd interface of the outlet of described air compressor and described cross valve, be provided with oil eliminator.
Oil eliminator can make compressor oil be separated entering before heat exchanger, reduces the impact of machine oil heat exchanger efficiency, improves heat exchanger efficiency.
As preferably, the oil-out of described oil eliminator and the oil return opening of described air compressor are communicated with.
As preferably, between the oil-out of described oil eliminator and the oil return opening of described air compressor, be provided with external cooler.
External oil cooling but device can reduce the machine oil oil temperature of getting back to compressor, prevents that compressor oil temperature is too high and reduces lubricant effect, improves the efficiency of compressor.
  
As preferably, the outlet of described oil eliminator is communicated with by the outlet of the 5th check valve and described air-side heat exchanger.
Such connected mode, has formed bypass line, and the one, in the time that suction pressure of compressor low pressure sets value, can open bypass line, improve pressure of inspiration(Pi), prevent compressor low voltage failure, play the effect of preventive protection; The 2nd, heating circulation time, in the time of a small amount of frosting of air-side heat exchanger, can defrost by hot-gas bypass pipeline, now unit heats circulation and also can remain in operation, and reduces the impact that defrosting heats unit.
As preferably, between the import of described air compressor and described oil return interface, be provided with electromagnet cut off valve.
Beneficial effect of the present invention is:
Unit of the present invention, its heat exchange efficiency is high, good effect of heat exchange.
Brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is described further:
Fig. 1 is the structural representation of one embodiment of the invention;
Fig. 2 is the structural representation of distributor.
In figure:
1, air compressor; 2, cross valve; 3, air-side heat exchanger; 4, cooling fan; 5, air-side heat exchanger cooler; 6, device for drying and filtering; 7, drench liquid formula heat exchanger, 701, oil return interface; 702, refrigerant liquid outlet; 703, gas refrigerant interface; 704, refrigerant liquid interface; 8, the first check valve; 9, the first expansion valve; 10, the second check valve; 11, the 3rd check valve; 12, the 4th check valve; 13, the second expansion valve; 14, oil eliminator; 15, external cooler; 16, the 5th check valve; 17, electromagnet cut off valve.
Detailed description of the invention
The following stated is only preferred embodiment of the present invention, not scope of the present invention is limited.
Embodiment, see accompanying drawing 1, air-cooled heat pump water chiller-heater units, comprise air compressor 1, cross valve 2, air-side heat exchanger 3, for the cooling fan 4 dispelling the heat to described air-side heat exchanger 3, air-side heat exchanger cooler 5 and device for drying and filtering 6, also comprise and drench liquid formula heat exchanger 7, described pouring liquid formula heat exchanger 7 is provided with oil return interface 701, refrigerant liquid outlet 702, gas refrigerant interface 703 and refrigerant liquid interface 704, the first interface a1 of described gas refrigerant interface 703 and described cross valve 2 is communicated with, the second interface a2 of the import b of described air compressor 1 and described cross valve 2, oil return interface 701 is communicated with, the second interface and oil return interface are in parallel, be divided into two-way then can He Cheng mono-road and the import of air compressor be communicated with, the 3rd interface a3 of the outlet of described air compressor 1 and described cross valve 2 is communicated with, the 4th interface a4 of described cross valve 2 and the import of described air-side heat exchanger 3 are communicated with, described refrigerant liquid outlet 702 is communicated with by the import of the first check valve 8 and described device for drying and filtering 6, ensure that fluid can only export from refrigerant liquid the import of 702 unidirectional inflow devices for drying and filtering 6, the first interface of described refrigerant liquid interface 704 and the first expansion valve 9 is communicated with, the second interface of described the first expansion valve 9 and the outlet of described device for drying and filtering 6 are communicated with, simultaneously, the outlet of described air-side heat exchanger cooler 5 is communicated with by the import of the second check valve 10 and described device for drying and filtering 6, the second check valve 10 ensures the import of fluid from the outlet single flow direction device for drying and filtering 6 of air-side heat exchanger cooler 5, the second check valve 10 and the first check valve 8 parallel connections, simultaneously, the second interface of described the first expansion valve 9 is communicated with by the import of the 3rd check valve 11 and described the second check valve 10, that is to say, the outlet of its while and air-side heat exchanger cooler 5 is communicated with, the 3rd check valve ensures that fluid can only be from the outlet of the unidirectional import that flows to the second check valve 10 of the second interface of the first expansion valve 9 and air-side heat exchanger cooler 5, the outlet of the import of described air-side heat exchanger cooler 5 and described air-side heat exchanger 3 is communicated with, meanwhile, between the outlet of described air-side heat exchanger 3 and the import of described air-side heat exchanger cooler 5, be provided with the 4th check valve 12 and the second expansion valve 13 with described the 4th check valve 12 parallel connections, the 4th check valve ensures the import of fluid from the unidirectional inflow air-side heat exchanger of the outlet cooler 5 of air-side heat exchanger 3.
Further, between the 3rd interface of the outlet d of described air compressor 1 and described cross valve 2, be provided with oil eliminator 14; The oil return opening c of the oil-out of described oil eliminator 14 and described air compressor 1 is communicated with; Between the oil return opening of the oil-out of described oil eliminator 14 and described air compressor 1, be provided with external cooler 15, the outlet of described oil eliminator 14 is communicated with by the outlet of the 5th check valve 16 and described air-side heat exchanger 3, between the import of described air compressor 1 and described oil return interface 701, is provided with electromagnet cut off valve 17.
Circulation process when refrigeration: refrigerant gas is isolated after machine oil through oil eliminator 14 after air compressor 1 compression, and isolated machine oil is got back to air compressor after external cooler 15 is cooling; And refrigerant gas after separating enters air-side heat exchanger 3 through cross valve, refrigerant gas heat exchange is condensed into liquid, after air-side heat exchanger cooler 5 is excessively cold, enter device for drying and filtering through the second check valve 10, enter again the first expansion valve 9, after expansion valve throttling, enter and drench liquid formula heat exchanger, the refrigerant gas after evaporation is got back to air compressor through cross valve again.Drench the oil of liquid formula heat exchanger bottom through oil return pipe simultaneously, get back to compressor by electromagnet cut off valve 17.
Circulation process while heating: refrigerant gas through after air compressor compression after oil eliminator is isolated machine oil, isolated machine oil enters external cooler 15 and gets back to air compressor after cooling; Refrigerant gas after separation enters and drenches liquid formula heat exchanger through cross valve, refrigerant gas heat exchange is condensed into liquid, flow out from the refrigerant liquid outlet 702 of drenching liquid formula heat exchanger again, enter device for drying and filtering through the first check valve, through air-side heat exchanger subcooler cross cold after, enter the second expansion valve 13 that heats use, after expansion valve throttling, enter air-side heat exchanger, refrigerant gas after evaporation is got back to compressor through cross valve again, and now the electromagnet cut off valve 17 on return line is closed; Hot-gas bypass pipeline connects going out to air-side heat exchanger of compressor through the 5th check valve.
The import of the 4th interface a4 and described air-side heat exchanger 3 is communicated with; Air-side heat exchanger is two, and the import of the 4th interface a4 and two air-side heat exchangers 3 is communicated with; Between the 4th interface a4 and the import of two air-side heat exchangers 3, be provided with distributor 18, see accompanying drawing 2; Described distributor 18 comprises import 1802 and the hybrid chamber 1803 that communicates of described import 1802 that point part 1801 and described the 4th interface a4 be communicated with, is arranged on interior distribution plate 1804, the first outlet 1805 and the second outlet 1806 that described hybrid chamber 1803 is divided into front hybrid chamber 180301 and rear hybrid chamber 180302 of described hybrid chamber 1803; In described front hybrid chamber 180301, be provided with the fluid flowing to from described import 1802 is broken up break up mixing portion 1807, in described rear hybrid chamber 180302, be provided with the fluid of coming from described distribution plate 1804 is broken up again break up mixing portion 1808.The import of the first outlet and respectively with two described air-side heat exchangers 3 of the second outlet is communicated with; In described the first outlet 1805 and the second outlet 1806, be provided with and make fluid well-distributing in hybrid chamber 180302 from described be assigned to the Flow-rate adjustment distributing valve 19 in the first outlet 1805, the second outlet 1806; Described Flow-rate adjustment distributing valve 19 comprises valve body 1901, be arranged on multiple by hole 1902 and described multiplely communicate and along with being become gradually large bellmouth 1903 and be arranged on the steel ball 1904 in described bellmouth 1903 by hole 1902 diameters away from described by hole 1902 in described valve body 1901; Before described, breaing up mixing portion 1807 is along with become gradually large Rotary-table away from described import 1802 diameters; Described Rotary-table forms stir chamber 1810 away from end face and the described distribution plate of described import 1802, in described stir chamber, be provided with swiveling wheel 1811, swiveling wheel 1811 stirs the liquid entering in stir chamber, it is mixed, further, described swiveling wheel 1811 is provided with multiple inclination mixed plates 1809, and swiveling wheel is arranged on fixed axis by bearing, and fixed axis is fixedly connected with distribution plate and Rotary-table; After break up that mixing portion 1808 is rotating to be arranged in rear hybrid chamber 180302, its end face near distribution plate is provided with stirring piece.

Claims (7)

1. air-cooled heat pump water chiller-heater units, comprise air compressor (1), cross valve (2), air-side heat exchanger (3), for cooling fan (4) and device for drying and filtering (6) to described air-side heat exchanger (3) heat radiation, it is characterized in that: also comprise and drench liquid formula heat exchanger (7) and air-side heat exchanger cooler (5), described pouring liquid formula heat exchanger (7) is provided with oil return interface (701), refrigerant liquid outlet (702), gas refrigerant interface (703) and refrigerant liquid interface (704), the first interface of described gas refrigerant interface (703) and described cross valve (2) is communicated with, the second interface of the import of described air compressor (1) and described cross valve (2), oil return interface (701) is communicated with, the 3rd interface of the outlet of described air compressor (1) and described cross valve (2) is communicated with, the 4th interface of described cross valve (2) and the import of described air-side heat exchanger (3) are communicated with, described refrigerant liquid outlet (702) is communicated with by the import of the first check valve (8) and described device for drying and filtering (6), the first interface of described refrigerant liquid interface (704) and the first expansion valve (9) is communicated with, the outlet of the second interface of described the first expansion valve (9) and described device for drying and filtering (6) is communicated with, the outlet of described air-side heat exchanger cooler (5) is communicated with by the import of the second check valve (10) and described device for drying and filtering (6), the second interface of described the first expansion valve (9) is communicated with by the import of the 3rd check valve (11) and described the second check valve (10), the outlet of the import of described air-side heat exchanger cooler (5) and described air-side heat exchanger (3) is communicated with.
2. air-cooled heat pump water chiller-heater units according to claim 1, is characterized in that: between the outlet of described air-side heat exchanger (3) and the import of described air-side heat exchanger cooler (5), be provided with the 4th check valve (12) and and described the 4th check valve (12) the second expansion valve (13) in parallel.
3. air-cooled heat pump water chiller-heater units according to claim 2, is characterized in that: between the outlet of described air compressor (1) and the 3rd interface of described cross valve (2), be provided with oil eliminator (14).
4. air-cooled heat pump water chiller-heater units according to claim 3, is characterized in that: the oil return opening of the oil-out of described oil eliminator (14) and described air compressor (1) is communicated with.
5. air-cooled heat pump water chiller-heater units according to claim 4, is characterized in that: between the oil-out of described oil eliminator (14) and the oil return opening of described air compressor (1), be provided with external cooler (15).
6. air-cooled heat pump water chiller-heater units according to claim 2, is characterized in that: the outlet of described oil eliminator (14) is communicated with by the outlet of the 5th check valve (16) and described air-side heat exchanger (3).
7. according to the air-cooled heat pump water chiller-heater units described in claim 2 or 3 or 4 or 5 or 6, it is characterized in that: between the import of described air compressor (1) and described oil return interface (701), be provided with electromagnet cut off valve (17).
CN201410146210.1A 2014-04-14 2014-04-14 Air-cooled heat pump water chiller-heater units Expired - Fee Related CN103983040B (en)

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CN103983040B CN103983040B (en) 2016-05-18

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6378318B1 (en) * 2000-05-08 2002-04-30 Keum Su Jin Heat pump type air conditioning apparatus
CN202835900U (en) * 2012-09-26 2013-03-27 堃霖冷冻机械(上海)有限公司 Energy-efficient flooded type air-cooled heat pump unit
CN203518336U (en) * 2013-10-11 2014-04-02 劳特斯空调(江苏)有限公司 Multifunctional air-cooled heat pump water cooling unit
CN203928488U (en) * 2014-04-14 2014-11-05 美意(浙江)空调设备有限公司 Air-cooled heat pump water chiller-heater units

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6378318B1 (en) * 2000-05-08 2002-04-30 Keum Su Jin Heat pump type air conditioning apparatus
CN202835900U (en) * 2012-09-26 2013-03-27 堃霖冷冻机械(上海)有限公司 Energy-efficient flooded type air-cooled heat pump unit
CN203518336U (en) * 2013-10-11 2014-04-02 劳特斯空调(江苏)有限公司 Multifunctional air-cooled heat pump water cooling unit
CN203928488U (en) * 2014-04-14 2014-11-05 美意(浙江)空调设备有限公司 Air-cooled heat pump water chiller-heater units

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Granted publication date: 20160518