CN101922823A - Secondary air injection high-efficiency ultralow temperature heat pump unit - Google Patents

Secondary air injection high-efficiency ultralow temperature heat pump unit Download PDF

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Publication number
CN101922823A
CN101922823A CN 201010270325 CN201010270325A CN101922823A CN 101922823 A CN101922823 A CN 101922823A CN 201010270325 CN201010270325 CN 201010270325 CN 201010270325 A CN201010270325 A CN 201010270325A CN 101922823 A CN101922823 A CN 101922823A
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CN
China
Prior art keywords
compressor
economizer
valve
heat pump
expansion valve
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN 201010270325
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Chinese (zh)
Inventor
张载彭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GUANGZHOU DERON HEAT SOURCE FACILITIES CO Ltd
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GUANGZHOU DERON HEAT SOURCE FACILITIES CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by GUANGZHOU DERON HEAT SOURCE FACILITIES CO Ltd filed Critical GUANGZHOU DERON HEAT SOURCE FACILITIES CO Ltd
Priority to CN 201010270325 priority Critical patent/CN101922823A/en
Publication of CN101922823A publication Critical patent/CN101922823A/en
Priority to EP11005781.7A priority patent/EP2426437A3/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/13—Economisers

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses a secondary air injection high-efficiency ultralow temperature heat pump unit which comprises a compressor, a condenser, a liquid storage pot, a thermostatic expansion valve, an evaporator and a gas-liquid separator. All assemblies are connected in sequence to form a loop, and a compressor air supplement unit is arranged between the compressor and the liquid storage pot. The air supplement unit comprises an injection expansion valve, an economizer, a first solenoid valve and a second solenoid valve, wherein the two solenoid valves are connected in parallel, the first solenoid valve is directly connected with the compressor, the second solenoid valve is successively connected with the injection expansion valve and the economizer in series, and the economizer is connected with the compressor. In the invention, the technology of compensating air for a compressor in the course of compression is adopted, the normal operating temperature range of the compressor is greatly widened, and the system is stable and reliable and has obvious energy saving effect.

Description

The secondary air injection high-efficiency ultralow temperature heat pump unit
Technical field
The present invention relates to field of air conditioning, particularly a kind of secondary air injection high-efficiency ultralow temperature heat pump unit.
Background technology
At present, the operating ambient temperature scope of common net for air-source heat pump units is generally at-7～43 ℃, but at the northern area of weather cold, existing air source heat pump then can't operate as normal.Therefore, limited popularization and the application of air source heat pump to a great extent in northern market.
Summary of the invention
The purpose of this invention is to provide a kind of secondary air injection high-efficiency ultralow temperature heat pump unit, novel structure has adopted the middle tonifying Qi technology of compressor, has improved the natural running temperature scope of compressor greatly, and system stability is reliable, and energy-saving effect is obvious.
Technical scheme of the present invention is: a kind of secondary air injection high-efficiency ultralow temperature heat pump unit, comprise compressor, condenser, fluid reservoir, heating power expansion valve, evaporimeter and gas-liquid separator, each assembly links to each other successively and forms the loop, also be provided with the compressor making-up air device between described compressor and the fluid reservoir, this making-up air device comprises jet expansion valve, economizer, first magnetic valve and second magnetic valve; Described two magnetic valves are in parallel, and described first magnetic valve directly links to each other with compressor, and described second magnetic valve is in series with jet expansion valve and economizer successively, and described economizer links to each other with compressor again.
The present invention can do following improvement, and described compressor is provided with the tonifying Qi inlet, and described first magnetic valve and economizer all are connected to the tonifying Qi inlet of compressor.
The present invention can also do following improvement, described economizer adopts the double loop plate type heat exchanger, the two ends in one of them loop of this plate type heat exchanger link to each other with the tonifying Qi inlet of described jet expansion valve and compressor respectively, and the two ends in another loop link to each other with described fluid reservoir and heating power expansion valve respectively.
The invention has the beneficial effects as follows:
Secondary air injection high-efficiency ultralow temperature heat pump unit of the present invention, owing in source pump, increased the compressor making-up air device, improved the natural running temperature scope of compressor greatly, made compressor guaranteeing operate as normal more than-30 ℃, realized that promptly heat pump normally heats.Working stability of the present invention, good reliability, the energy-saving effect ideal can be widely used in north cold area.
Description of drawings
Fig. 1 is the operation principle schematic diagram of the embodiment of the invention.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
The specific embodiment of the present invention as shown in Figure 1, a kind of secondary air injection high-efficiency ultralow temperature heat pump unit, comprise compressor 1, condenser 2, fluid reservoir 3, heating power expansion valve 4, evaporimeter 5 and gas-liquid separator 6, each assembly links to each other successively and forms the loop, also be provided with the compressor making-up air device between compressor 1 and the fluid reservoir 3, this making-up air device comprises jet expansion valve 6, economizer 7, first magnetic valve 8 and second magnetic valve 9; Two magnetic valves are in parallel, and first magnetic valve 8 directly links to each other with compressor 1, and second magnetic valve 9 is in series with jet expansion valve 6 and economizer 7 successively, and economizer 7 links to each other with compressor 1 again.
In the present embodiment, compressor 1 is provided with tonifying Qi inlet VI, and first magnetic valve 8 and economizer 7 all are connected to the tonifying Qi inlet VI of compressor 1.Economizer 7 adopts the double loop plate type heat exchanger, and the two ends in one of them loop of this plate type heat exchanger link to each other with the tonifying Qi inlet VI of jet expansion valve 6 and compressor 1 respectively, and the two ends in another loop link to each other with fluid reservoir 3 and heating power expansion valve 4 respectively.The exhaust outlet D of compressor 1 is connected with cross valve 10, and compressor 1 links to each other with condenser 1 by this cross valve 10, and evaporimeter 5 links to each other with gas-liquid separator 6 by this cross valve 10, and gas-liquid separator 6 is connected to the return-air mouth S of compressor 1.The outside of compressor 1 and gas-liquid separator 6 is equipped with looking of observation usefulness and manages 12,13.Be provided with a plurality of pressure detecting mouths 14 in the source pump.Also be provided with capillary 15 between first magnetic valve 8 and the compressor 1, promptly spray when not enough when the first time of realizing by jet expansion valve 6, first magnetic valve 8 is opened, and proceeds for the second time that capillary sprays, thus the delivery temperature of control compressor 1.
The secondary air injection high-efficiency ultralow temperature heat pump unit of present embodiment, its operation principle is as follows:
(1) compressor 1 work produces the refrigerant of HTHP, and exhaust outlet D by compressor 1 and cross valve 10 enter condenser 2 and carry out heat exchange, the liquid of warm high pressure in being transformed into, and discharge by condenser 2, enter fluid reservoir 3.
(2) the refrigerant process visor 11 that comes out from fluid reservoir 3 by after economizer 7 heat exchange, flows to heating power expansion valve 4, and then enters evaporimeter 5 again, finally is back to the return-air mouth S of compressor 1 through gas-liquid separator 6.
(3) when the insufficient pressure in the compressor 1, first magnetic valve 8 can carry out throttling to unnecessary refrigerant; Refrigerant is sprayed by 6 throttlings of jet expansion valve behind second magnetic valve 9 again, changes the gas of high-temperature low-pressure into, be mingled with small amount of liquid in this gas, again further by economizer 7 heat exchange, convert gas to fully after, the tonifying Qi inlet VI that enters compressor 1 at last carries out tonifying Qi.
The above embodiments only are the preferred embodiments of the present invention, can not limit interest field of the present invention with this, and therefore, the equivalent variations according to the present patent application claim is done still belongs to the scope that the present invention is contained.

Claims (4)

1. secondary air injection high-efficiency ultralow temperature heat pump unit, comprise compressor (1), condenser (2), fluid reservoir (3), heating power expansion valve (4), evaporimeter (5) and gas-liquid separator (6), each assembly links to each other successively and forms the loop, also be provided with the compressor making-up air device on it is characterized in that between described compressor (1) and the fluid reservoir (3), this making-up air device comprises jet expansion valve (6), economizer (7), first magnetic valve (8) and second magnetic valve (9); Described two magnetic valves are in parallel, and described first magnetic valve (8) directly links to each other with compressor (1), and described second magnetic valve (9) is in series with jet expansion valve (6) and economizer (7) successively, and described economizer (7) links to each other with compressor (1) again.
2. secondary air injection high-efficiency ultralow temperature heat pump unit according to claim 1 is characterized in that described compressor (1) is provided with the tonifying Qi inlet, and described first magnetic valve (8) and economizer (7) all are connected to the tonifying Qi inlet of compressor (1).
3. secondary air injection high-efficiency ultralow temperature heat pump unit according to claim 2, it is characterized in that described economizer (7) adopts the double loop plate type heat exchanger, the two ends in one of them loop of this plate type heat exchanger link to each other with the tonifying Qi inlet of described jet expansion valve (6) and compressor (1) respectively, and the two ends in another loop link to each other with described fluid reservoir (3) and heating power expansion valve (4) respectively.
4. according to any described secondary air injection high-efficiency ultralow temperature heat pump unit in the claim 1 to 3, the exhaust outlet that it is characterized in that described compressor (1) is connected with cross valve (10), described compressor (1) links to each other with condenser (2) by this cross valve (10), and, described evaporimeter (5) links to each other with gas-liquid separator (6) by this cross valve (10), and described gas-liquid separator (6) is connected to the return-air mouth of compressor (1).
CN 201010270325 2010-09-02 2010-09-02 Secondary air injection high-efficiency ultralow temperature heat pump unit Pending CN101922823A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN 201010270325 CN101922823A (en) 2010-09-02 2010-09-02 Secondary air injection high-efficiency ultralow temperature heat pump unit
EP11005781.7A EP2426437A3 (en) 2010-09-02 2011-07-14 Ultra low temperature heat pump system with secondary refrigerant injection mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201010270325 CN101922823A (en) 2010-09-02 2010-09-02 Secondary air injection high-efficiency ultralow temperature heat pump unit

Publications (1)

Publication Number Publication Date
CN101922823A true CN101922823A (en) 2010-12-22

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102818393A (en) * 2012-06-12 2012-12-12 徐亚红 Low-temperature total-heat recovery type modular air-cooled heat pump unit
CN103017503A (en) * 2012-12-28 2013-04-03 广州德能热源设备有限公司 Split type heat pump drying machine set
CN103291624A (en) * 2012-02-22 2013-09-11 珠海格力节能环保制冷技术研究中心有限公司 Single two-stage totally sealed refrigeration compressor with external mixing chamber
CN103471275A (en) * 2013-08-30 2013-12-25 青岛海信日立空调系统有限公司 Enhanced vapor injection air-conditioning circulating system and control method thereof
CN105674627A (en) * 2016-03-28 2016-06-15 侴乔力 Steam modulator driven by water source heat pump
CN106574813A (en) * 2014-09-05 2017-04-19 丹佛斯有限公司 A method for controlling a variable capacity ejector unit
CN110455013A (en) * 2018-05-08 2019-11-15 上海海立电器有限公司 Air injection enthalpy-increasing heat pump system
US10775086B2 (en) 2015-10-20 2020-09-15 Danfoss A/S Method for controlling a vapour compression system in ejector mode for a prolonged time
US10816245B2 (en) 2015-08-14 2020-10-27 Danfoss A/S Vapour compression system with at least two evaporator groups
US11333449B2 (en) 2018-10-15 2022-05-17 Danfoss A/S Heat exchanger plate with strengthened diagonal area
US11460230B2 (en) 2015-10-20 2022-10-04 Danfoss A/S Method for controlling a vapour compression system with a variable receiver pressure setpoint

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* Cited by examiner, † Cited by third party
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CN111426101A (en) * 2020-03-16 2020-07-17 科希曼电器有限公司 Air source heat pump device capable of stably running in ultralow-temperature environment and control system thereof
CN112665226B (en) * 2020-12-15 2024-04-12 珠海格力电器股份有限公司 Air conditioning system and control method thereof

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CN201476406U (en) * 2009-09-04 2010-05-19 大连中星科技开发有限公司 Low-temperature quasi-two-stage air source heat pump unit
CN101776342A (en) * 2010-01-25 2010-07-14 大连三洋压缩机有限公司 Low-temperature heat pump system
CN201772678U (en) * 2010-09-02 2011-03-23 广州德能热源设备有限公司 Pulse air-injection high-efficient ultralow-temperature heat pump unit

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CN1800747A (en) * 2005-11-25 2006-07-12 珠海格力电器股份有限公司 Low-temperature air conditioner heat pump system and method for decreasing temperature regulation fluctuation by employing the same
CN201265977Y (en) * 2008-08-26 2009-07-01 广西诚基永信太阳能科技工程有限公司 Air source heat pump units with air compensating pipeline
CN201476406U (en) * 2009-09-04 2010-05-19 大连中星科技开发有限公司 Low-temperature quasi-two-stage air source heat pump unit
CN101776342A (en) * 2010-01-25 2010-07-14 大连三洋压缩机有限公司 Low-temperature heat pump system
CN201772678U (en) * 2010-09-02 2011-03-23 广州德能热源设备有限公司 Pulse air-injection high-efficient ultralow-temperature heat pump unit

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103291624A (en) * 2012-02-22 2013-09-11 珠海格力节能环保制冷技术研究中心有限公司 Single two-stage totally sealed refrigeration compressor with external mixing chamber
CN103291624B (en) * 2012-02-22 2016-02-03 珠海格力节能环保制冷技术研究中心有限公司 A kind of mixing chamber external type single twin-stage hermetically sealed compressor
CN102818393A (en) * 2012-06-12 2012-12-12 徐亚红 Low-temperature total-heat recovery type modular air-cooled heat pump unit
CN103017503A (en) * 2012-12-28 2013-04-03 广州德能热源设备有限公司 Split type heat pump drying machine set
CN103471275A (en) * 2013-08-30 2013-12-25 青岛海信日立空调系统有限公司 Enhanced vapor injection air-conditioning circulating system and control method thereof
CN103471275B (en) * 2013-08-30 2017-12-19 青岛海信日立空调系统有限公司 Enhanced vapor injection air-conditioning circulating system and its control method
CN106574813A (en) * 2014-09-05 2017-04-19 丹佛斯有限公司 A method for controlling a variable capacity ejector unit
US10598414B2 (en) 2014-09-05 2020-03-24 Danfoss A/S Method for controlling a variable capacity ejector unit
US10816245B2 (en) 2015-08-14 2020-10-27 Danfoss A/S Vapour compression system with at least two evaporator groups
US10775086B2 (en) 2015-10-20 2020-09-15 Danfoss A/S Method for controlling a vapour compression system in ejector mode for a prolonged time
US11460230B2 (en) 2015-10-20 2022-10-04 Danfoss A/S Method for controlling a vapour compression system with a variable receiver pressure setpoint
CN105674627A (en) * 2016-03-28 2016-06-15 侴乔力 Steam modulator driven by water source heat pump
CN110455013A (en) * 2018-05-08 2019-11-15 上海海立电器有限公司 Air injection enthalpy-increasing heat pump system
US11333449B2 (en) 2018-10-15 2022-05-17 Danfoss A/S Heat exchanger plate with strengthened diagonal area

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Publication number Publication date
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EP2426437A3 (en) 2015-03-11

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Application publication date: 20101222