CN109000392A - A kind of frequency converter cooling means of air conditioner cold water unit, air conditioner cold water unit and air-conditioning - Google Patents

A kind of frequency converter cooling means of air conditioner cold water unit, air conditioner cold water unit and air-conditioning Download PDF

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Publication number
CN109000392A
CN109000392A CN201810982883.9A CN201810982883A CN109000392A CN 109000392 A CN109000392 A CN 109000392A CN 201810982883 A CN201810982883 A CN 201810982883A CN 109000392 A CN109000392 A CN 109000392A
Authority
CN
China
Prior art keywords
frequency converter
air conditioner
conditioner cold
cold water
water
Prior art date
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
CN201810982883.9A
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Chinese (zh)
Inventor
陈东红
周江峰
姜国璠
范斌
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.)
Gree Electric Appliances Inc of Zhuhai
Original Assignee
Gree Electric Appliances Inc of Zhuhai
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.)
Filing date
Publication date
Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN201810982883.9A priority Critical patent/CN109000392A/en
Publication of CN109000392A publication Critical patent/CN109000392A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

The invention discloses a kind of frequency converter cooling means of air conditioner cold water unit, air conditioner cold water unit and air-conditionings, it exchanges heat the described method includes: the condenser in the air conditioner cold water unit is first gone out liquid with chilled water, then so that the condenser after heat exchange is gone out liquid stream and frequency converter is cooled down through frequency converter.The frequency converter cooling means of air conditioner cold water unit of the invention has the advantages that good cooling results and efficiency is high.

Description

A kind of frequency converter cooling means of air conditioner cold water unit, air conditioner cold water unit and air-conditioning
Technical field
The present invention relates to field of air conditioning more particularly to a kind of frequency converter cooling means of air conditioner cold water unit, air conditioner cold water Unit and air-conditioning.
Background technique
Converter technique is widely used to all kinds of electromechanical equipments, and marine air conditioner water cooler is by totally enclosed type scroll compression The composition such as machine, plate-type evaporator, condenser, throttle structure, electric control box, frequency converter, and it is integrated with refrigerant water pump, using change Frequency compressor remains high energy efficiency ratio within the scope of full working scope, and energy saving is superior.
To save space, frequency converter is integrated in electric control box, while to meet environmental condition peculiar to vessel and electromagnetic compatibility Problem, frequency converter are placed in closed aluminium case, the cooling of frequency converter be its can efficient operation key factor, common technology Means are using refrigerant cooling, and current way has following two.
A kind of prior art is cooling using refrigerant refrigerant before throttling, and as shown in Fig. 1, is condensed out liquid directly through frequency converter Refrigerating module takes away the heat of frequency converter, this technical solution is primarily present following two disadvantage: one, working as hot weather, cooling water When temperature is higher, liquid temperature is condensed out up to 40 DEG C, at this moment frequency converter cooling effect is poor, and there are the wind of frequency converter running overload Danger;Two, heat exchange to be condensed out the raising of liquid temperature, and degree of supercooling reduces, and efficiency reduces.Another prior art such as attached drawing Shown in 2, using the heat for flowing through frequency converter refrigerating module after the throttling of liquid bypass and taking away frequency converter is condensed out, it is then return to board-like steaming Send out device, this technology is primarily present following two disadvantage: one, refrigerant temperature is low after throttling, and will lead to frequency converter condensation;Two, it saves Refrigerant is at gas-liquid two-phase after stream, and gas phase, which returns to plate heat exchanger and can occupy effective heat exchange area, causes refrigerating capacity to decline, efficiency It reduces.
Summary of the invention
The purpose of the present invention is the frequency converter cooling effect difference for above-mentioned air conditioner cold water unit of the existing technology and The low defect of efficiency provides the frequency converter cooling means and air-conditioning cold of a kind of good cooling results and the high air conditioner cold water unit of efficiency Water dispenser group.
In the embodiment of the present invention, a kind of frequency converter cooling means of air conditioner cold water unit is provided comprising: it first will be described Condenser in air conditioner cold water unit goes out liquid and exchanges heat with chilled water, then the condenser after heat exchange is made to go out liquid stream through frequency converter pair Frequency converter is cooled down.
In the embodiment of the present invention, the heat exchange that the condenser goes out between liquid and the chilled water is realized using subcooler.
In the embodiment of the present invention, the chilled water by the water outlet of the refrigerant water pump in the air conditioner cold water unit and It increases a water supply pipe between water inlet newly and is introduced into the subcooler.
In the embodiment of the present invention, solenoid valve is set on the chilled water water supply pipe of the subcooler, and according to the change The target temperature control solenoid valve of frequency device opens or closes.
In the embodiment of the present invention, a kind of air conditioner cold water unit comprising compressor, evaporator, condenser, throttle valve, change Frequency device, refrigerant water pump and subcooler, the condenser of the condenser go out liquid and provide in the subcooler with the refrigerant water pump Chilled water heat exchange after, flow through the frequency converter and the frequency converter cooled down.
In the embodiment of the present invention, the chilled water between the water outlet and water inlet of the refrigerant water pump by increasing one newly Water supply pipe is introduced into the subcooler.
In the embodiment of the present invention, it is provided with solenoid valve on the chilled water water supply pipe of the subcooler, according to the change The target temperature of frequency device controls the solenoid valve and opens or closes.
In the embodiment of the present invention, the subcooler include a closed cavity, across the cavity closing pipe line and The pipeline being connected to the cavity, the condenser go out liquid and flow through from the closing pipe line, the chilled water from the chamber It is flowed through in the pipeline of body connection.
In the embodiment of the present invention, a kind of air-conditioning is additionally provided, uses above-mentioned air conditioner cold water unit.
Compared with prior art, the frequency converter cooling means of air conditioner cold water unit of the invention, first by the condenser Condenser go out liquid in subcooler and the refrigerant water pump provide chilled water heat exchange after, pass through the frequency converter to described Frequency converter is cooled down, and can be reduced and is condensed out liquid temperature, to effectively take away the heat dissipation of frequency converter, can be prevented in high load capacity work Directly using being condensed out liquid cooling but frequency converter heat dissipation effect deficiency problem under condition, and will not be too low because of frequency converter coolant temperature Generate condensation problem.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of the frequency converter cooling system of the air conditioner cold water unit of prior art.
Fig. 2 is the schematic diagram of the frequency converter cooling system of the air conditioner cold water unit of another prior art.
Fig. 3 is the schematic diagram of the frequency converter cooling system of air conditioner cold water unit provided in an embodiment of the present invention.
Fig. 4, Fig. 5 are the structural schematic diagrams of subcooler provided in an embodiment of the present invention.
Specific embodiment
The present invention provides a kind of frequency converter cooling means of air conditioner cold water unit, first will be in the air conditioner cold water unit Condenser goes out liquid and exchanges heat with chilled water, then so that the condenser after heat exchange is gone out liquid stream and cool down through frequency converter to frequency converter. It is specifically described below.
As shown in figure 3, providing a kind of air conditioner cold water unit in the embodiment of the present invention comprising compressor, evaporator, Condenser, throttle valve, frequency converter, refrigerant water pump and subcooler.The working principle of the air conditioner cold water unit is as follows:
Refrigerant absorbs the heat of cooled object in the evaporator and is vaporized into steam, and the compressor will constantly generate Steam extracted out from the evaporator, and compressed, compressed high temperature, high steam are sent to cold after condenser But go out liquid to be cooled to the condenser of high pressure, then enter the evaporator after throttle valve is depressured, vaporize again, absorb described cold The heat of chilled water in matchmaker's water pump, so recycles again and again.The condenser of the condenser goes out liquid in the subcooler In with the refrigerant water pump provide chilled water heat exchange after, flow through the frequency converter and the frequency converter cooled down.
In the embodiment of the present invention, the chilled water between the water outlet and water inlet of the refrigerant water pump by increasing one newly Water supply pipe is introduced into the subcooler.Further, electromagnetism is provided on the chilled water water supply pipe of the subcooler Valve is opened or closed by the control solenoid valve to control the flowing of the chilled water entered in the subcooler, to control Make the target temperature of the frequency converter.
As shown in Figure 4, Figure 5, the subcooler includes a closed cavity 10, the closing pipe line 11 across the cavity The pipeline 12 being connected to with the cavity, the condenser go out liquid and flow through from the closing pipe line 11, the chilled water from It flows through in the pipeline 12 that the cavity 10 is connected to, is cooled down so that the chilled water goes out liquid to the condenser.Into one Step ground, can also increase baffle plate in the cavity 10, to improve heat exchange coefficient according to the cooling effect of the subcooler.
Further, in the embodiment of the present invention, a kind of air-conditioning is additionally provided, uses above-mentioned air conditioner cold water unit.
In conclusion the frequency converter cooling means of air conditioner cold water unit of the invention, first by the condenser of the condenser Out liquid in subcooler and the refrigerant water pump provide chilled water heat exchange after, pass through the frequency converter to the frequency converter into Row cooling, can reduce and be condensed out liquid temperature, to effectively take away the heat dissipation of frequency converter, can prevent under high load capacity operating condition directly Using being condensed out liquid cooling but frequency converter heat dissipation effect deficiency problem, and will not be because of the too low generation condensation of frequency converter coolant temperature Problem.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.

Claims (9)

1. a kind of frequency converter cooling means of air conditioner cold water unit characterized by comprising first will be in the air conditioner cold water unit Condenser go out liquid and exchange heat with chilled water, then make the condenser after heat exchange go out liquid stream frequency converter is carried out through frequency converter it is cold But.
2. the frequency converter cooling means of air conditioner cold water unit as described in claim 1, which is characterized in that using subcooler come real The existing condenser goes out the heat exchange between liquid and the chilled water.
3. the frequency converter cooling means of air conditioner cold water unit as claimed in claim 2, which is characterized in that the chilled water passes through A newly-increased water supply pipe is introduced into described between the water outlet and water inlet of the refrigerant water pump in the air conditioner cold water unit Subcooler.
4. the frequency converter cooling means of air conditioner cold water unit as claimed in claim 3, which is characterized in that in the subcooler Solenoid valve is set on chilled water water supply pipe, and solenoid valve is controlled according to the target temperature of the frequency converter and is opened or closed.
5. a kind of air conditioner cold water unit, which is characterized in that including compressor, evaporator, condenser, throttle valve, frequency converter, refrigerant Water pump and subcooler, the condenser of the condenser go out the chilled water that liquid provides in the subcooler with the refrigerant water pump and change After heat, flows through the frequency converter and the frequency converter is cooled down.
6. air conditioner cold water unit as claimed in claim 5, which is characterized in that the chilled water passes through in the refrigerant water pump It increases a water supply pipe between water outlet and water inlet newly and is introduced into the subcooler.
7. air conditioner cold water unit as claimed in claim 6, which is characterized in that on the chilled water water supply pipe of the subcooler It is provided with solenoid valve, the solenoid valve is controlled according to the target temperature of the frequency converter and is opened or closed.
8. air conditioner cold water unit as claimed in claim 5, which is characterized in that the subcooler include a closed cavity, Closing pipe line across the cavity and the pipeline that is connected to the cavity, the condenser go out liquid and flow from the closing pipe line It crosses, the chilled water is flowed through from the pipeline being connected to the cavity.
9. a kind of air-conditioning, which is characterized in that it is used such as the described in any item air conditioner cold water units of claim 4-8.
CN201810982883.9A 2018-08-27 2018-08-27 A kind of frequency converter cooling means of air conditioner cold water unit, air conditioner cold water unit and air-conditioning Pending CN109000392A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810982883.9A CN109000392A (en) 2018-08-27 2018-08-27 A kind of frequency converter cooling means of air conditioner cold water unit, air conditioner cold water unit and air-conditioning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810982883.9A CN109000392A (en) 2018-08-27 2018-08-27 A kind of frequency converter cooling means of air conditioner cold water unit, air conditioner cold water unit and air-conditioning

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109959182A (en) * 2019-04-15 2019-07-02 广东美的制冷设备有限公司 Refrigeration system and air conditioner
US11530855B2 (en) * 2018-01-31 2022-12-20 Qingdao Haier Air-Conditioning Electronic Co., Ltd. Air conditioner heat dissipation structure control method and system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0933603A1 (en) * 1998-01-30 1999-08-04 RC Group S.p.A. Cooling system having an inverter for controlling a compressor cooled by a fluid of the system and related process
CN107763757A (en) * 2017-11-22 2018-03-06 珠海格力电器股份有限公司 Cooling system
CN107940803A (en) * 2017-11-21 2018-04-20 珠海格力电器股份有限公司 Heat pump system and frequency converter cool-down method
CN208720598U (en) * 2018-08-27 2019-04-09 珠海格力电器股份有限公司 A kind of air conditioner cold water unit and air-conditioning

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0933603A1 (en) * 1998-01-30 1999-08-04 RC Group S.p.A. Cooling system having an inverter for controlling a compressor cooled by a fluid of the system and related process
CN107940803A (en) * 2017-11-21 2018-04-20 珠海格力电器股份有限公司 Heat pump system and frequency converter cool-down method
CN107763757A (en) * 2017-11-22 2018-03-06 珠海格力电器股份有限公司 Cooling system
CN208720598U (en) * 2018-08-27 2019-04-09 珠海格力电器股份有限公司 A kind of air conditioner cold water unit and air-conditioning

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11530855B2 (en) * 2018-01-31 2022-12-20 Qingdao Haier Air-Conditioning Electronic Co., Ltd. Air conditioner heat dissipation structure control method and system
CN109959182A (en) * 2019-04-15 2019-07-02 广东美的制冷设备有限公司 Refrigeration system and air conditioner

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Application publication date: 20181214

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