CN1982798A - Compensating system and compensating control method for compressor - Google Patents

Compensating system and compensating control method for compressor Download PDF

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Publication number
CN1982798A
CN1982798A CN 200510120880 CN200510120880A CN1982798A CN 1982798 A CN1982798 A CN 1982798A CN 200510120880 CN200510120880 CN 200510120880 CN 200510120880 A CN200510120880 A CN 200510120880A CN 1982798 A CN1982798 A CN 1982798A
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compressor
reservoir
evi
temperature
compensating system
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CN100439809C (en
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谭建明
苏玉海
刘桂平
孙常权
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Abstract

The inventive system comprises a reservoir, a compressor, an EVI magnetic valve and a throttling gear. A first interface of the reservoir is connected with the throttling gear, a second interface of the reservoir is connected with the assembly of the outdoor unit and then connected into a first suction inlet of the compressor and a third interface of the reservoir is connected with the EVI magnetic valve and then connected into a second pipeline for connecting the reservoir and the EVI magnetic valve is led out from the top of the reservoir. The inventive method is used for controlling the opening degree of the expansion valve and the opening and closing of the magnetic valve.

Description

A kind of compressor air compensating system and tonifying Qi control method
Technical field
The present invention relates to field of Refrigeration and Air-conditioning, particularly a kind ofly can improve air conditioner obtains good heating effect under worst cold case compressor air compensating system and tonifying Qi control method.
Background technology
Along with constant development of economy, air conditioner is widely used in residential houses, commercial building.But China's region area is wide, and winter, region temperature difference in north and south was very big.The most of local temperature in the north are about subzero 20 degree, and southern climates is warm and humid, and temperature is generally about ten degree above freezing.What the air-conditioning of manufacturer production generally used now is common compressor, when this air-conditioning is spent in operating mode more than ten, can reach comparatively ideal heating effect, but subzero 20 degree are during the left and right sides in the north, the heating capacity decay is very serious, and heating capacity does not reach rated value, and heating effect is undesirable, even when operating mode was very low, air conditioner can not start.The traditional central heating mode of northern China is based on coal-fired, combustion gas, and these heating systems all can't reach the requirement of social development at energy-saving and environmental protection, secure context, so press for a kind of new type compressor syndeton and control corresponding method that can make air conditioner obtain good heating effect under worst cold case of exploitation.
Summary of the invention
The object of the present invention is to provide a kind of compressor air compensating system and tonifying Qi control method of using enhancement mode air injection enthalpy-increasing digital scroll compressor, use the air-conditioning function of this compressor air compensating system under worst cold case, to obtain heating effect preferably.This system is on the basis of original system architecture, draw one road saturated refrigerant gas from reservoir or the container top that serves as reservoir and enter compressor from second air entry of enhancement mode air injection enthalpy-increasing digital scroll compressor by the EVI magnetic valve, the circulation of participation cold-producing medium, the refrigerant amount that enters compressor is regulated in switching by tonifying Qi control method control EVI magnetic valve, the aperture of regulating the EVI electric expansion valve by this method is regulated the liquid level in the reservoir simultaneously, guarantees full liquid phenomenon can not occur in the reservoir.So just can work as operating mode when very low, can replenish saturated refrigerant gas to compressor and participate in circulation, make compressor internal pressure, flow increase, air-conditioning just can start smoothly, reaches predetermined heating effect, has guaranteed the reliability of air-conditioning system work simultaneously.
The object of the present invention is achieved like this: a kind of compressor air compensating system, described compressor air compensating system is used for air conditioner, described air conditioner also comprises the indoor set assembly, off-premises station assembly and connecting pipe, described indoor set assembly comprises indoor heat exchanger and expansion valve, described off-premises station assembly comprises secondary cooling coil, throttle part and outdoor heat exchanger, described throttle part is composed in parallel by expansion valve and check valve, described compressor air compensating system and indoor set assembly, the off-premises station assembly connects to form complete refrigerating circuit by pipeline, described compressor air compensating system comprises reservoir, compressor, the EVI magnetic valve, throttling arrangement, first interface of described reservoir is connected with throttling arrangement, be connected to first air entry of compressor after the outer thermomechanical components of the second interface junction chamber of reservoir, the 3rd interface of reservoir has connected second air entry that is connected to compressor behind the EVI magnetic valve, and the pipeline of described connection reservoir and EVI magnetic valve is drawn from the reservoir top.
Its second is characterised in that: described compressor air compensating system also comprises three temperature-sensitive bags.
Its 3rd is characterised in that: the first temperature-sensitive bag is arranged on the pipe surface that compressor is connected with the EVI magnetic valve, the second temperature-sensitive bag is arranged on the pipe surface that reservoir is connected with throttling arrangement, and the 3rd temperature-sensitive bag is arranged on the position that can accurately experience outdoor environment temperature.
Its 4th is characterised in that: the described position that can accurately experience outdoor environment temperature is on the fin of outdoor heat exchanger.
Its 5th is characterised in that: described temperature-sensitive bag is a thermistor.
Its 6th is characterised in that: described throttling arrangement is composed in parallel by EVI electric expansion valve and check valve.
Its 7th is characterised in that: described compressor is an enhancement mode air injection enthalpy-increasing digital scroll compressor.
A kind of tonifying Qi control method of compressor air compensating system may further comprise the steps:
(1), in system controller, send out set the goal temperature value T1 and T2, arrive step (2) then;
(2), sensing chamber's external environment temperature T 3, arrive step (3) then;
(3), detect the temperature T 4 that connects compressor and EVI magnetic valve pipeline: arrive step (4) then;
(4), detect to connect the temperature T 5 of reservoir and throttling arrangement pipeline, comparison T4 and T5 try to achieve the difference T of T4 and T5, arrive step (5) then;
(5), by the relation of T and T1 relatively, draw the aperture of EVI electric expansion valve, arrive step (6) then;
(6), by the relation of T2 and T3 relatively, whether control EVI magnetic valve is opened, if unit continues operation, to step (2), if shut down, to step (7);
(7), finish to withdraw from.
Advantage of the present invention is: (one), solved the air-conditioning unit is issued to pre-customized thermal effect at worst cold case problem; (2), guaranteed whole air-conditioning unit reliability of operation; (3), to add element in original system few, be easy to promote the use of.
Description of drawings
Fig. 1 is among the present invention, the structural representation that the compressor air compensating system is connected with indoor set assembly, off-premises station assembly;
Fig. 2 is the control flow chart of supplementing method for air among the present invention.
The specific embodiment
Embodiment one:
As shown in Figure 1, compressor air compensating system and indoor set assembly, off-premises station assembly connect to form complete refrigerant circulation loop.Described indoor set assembly comprises indoor heat exchanger 1 and expansion valve 2, and described off-premises station assembly comprises secondary cooling coil 16, throttle part 3 and outdoor heat exchanger 4, and described throttle part 3 is composed in parallel by expansion valve 5 and check valve 6.The compressor air compensating system is made up of enhancement mode air injection enthalpy-increasing digital scroll compressor 8 (hereinafter to be referred as compressor), reservoir 7, EVI magnetic valve 9, throttling arrangement 10, three temperature-sensitive bags, wherein throttling arrangement 10 is composed in parallel by EVI electric expansion valve 14 and check valve 15, connects by copper pipe between each parts.First interface of reservoir 7 connects throttling arrangement 10, second interface of reservoir 7 has connected first air entry that is connected to compressor 8 behind the off-premises station assembly, draw a pipeline from the 3rd interface of reservoir 7, this pipeline is drawn from reservoir 7 tops, and it has connected second air entry that is connected to compressor 8 behind the EVI magnetic valve 9.The first temperature-sensitive bag 11 is arranged on the copper pipe that connects compressor 8 second air entries and EVI magnetic valve 9, the second temperature-sensitive bag 12 is arranged on the copper pipe that connects reservoir 7 and throttling arrangement 10, in the present embodiment, the 3rd temperature-sensitive bag 13 is arranged on the fin of outdoor heat exchanger 4.
The air conditioner that uses this compressor air compensating system is when heating operation, the low-temperature low-pressure refrigerant that comes out from outdoor heat exchanger 4 through compressor 8 compressions after, in the scroll plate of compressor 8 with the refrigerant mixed that sucks from compressor 8 second air entries, continue to be compressed into the gas of HTHP then by compressor 8, high-temperature high-pressure refrigerant gas after the compression is flowed through behind indoor heat exchanger 1 and the electric expansion valve 2, being become gas-liquid mixture after 14 throttlings of EVI electric expansion valve enters reservoir 7, heat at reservoir 7 inner refrigerant GAS ABSORPTION refrigerant liquids reaches certain state, be used to be inhaled into compressor 8 second air entries, all the other cold-producing mediums are then through secondary cooling coil 16 coolings, flow into outdoor heat exchanger 4 after throttle part 3 throttlings and carry out heat exchange, first air entry of last compressed machine 8 flows into compressor 8 and participates in circulation next time.
The action principle of described reservoir is: the refrigerant air-liquid mixture through preliminary throttling enters after the reservoir 7, liquid gathers in reservoir 7 bottoms, and second interface that passes through reservoir 7 flows out reservoir, follow-up again through secondary cooling coil 16 coolings, inlet chamber external heat exchanger 4 after throttle part 3 throttlings, in reservoir 7, the heat that refrigerant gas absorbs liquid reaches certain state, when EVI magnetic valve 9 is opened, three interface of refrigerant gas by reservoir 7 enters compressor 8 through EVI magnetic valve 9 from second air entry of compressor 8, participates in circulation with all the other refrigerant mixed.In reservoir 7, the heat of refrigerant gas absorption refrigeration agent liquid, thus the refrigerant liquid degree of supercooling is increased, improve the degree of supercooling of whole circulation cold-producing medium, this system improves the heating capacity and the Energy Efficiency Ratio of whole system by increase the inspiratory capacity of compressor to the compressor tonifying Qi simultaneously.
Introduce EVI magnetic valve and EVI electronic Expansion Valve Control method below in detail.
Tonifying Qi control method as shown in Figure 2, at first in the controller of system, set two target temperature value T1, T2, the first temperature-sensitive bag 11 detects the temperature T 4 that connects compressor 8 and EVI magnetic valve 9 pipelines, the second temperature-sensitive bag 12 detects temperature T 5, the three temperature-sensitive bags 13 sensing chamber's external environment temperature T 3 that connect reservoir 7 and throttling arrangement 10 pipelines.
The target temperature value T1 that sets in difference T by relatively T4, T5 and the system controls the aperture of EVI electric expansion valve 14, thereby full liquid phenomenon can not appear in liquid level in the control reservoir, and the assurance compressor Wet Compression can not occur, guarantees the reliability service of compressor.Control the switching of EVI magnetic valve 9 by the relation of T2 and T3 relatively, but T3 is during smaller or equal to T2, EVI magnetic valve 9 is opened; As T3 during greater than T2, EVI magnetic valve 9 cuts out.When EVI magnetic valve 9 was opened, the refrigerant gas in the reservoir 7 participated in heating circulation with all the other refrigerant mixed in second air entry of EVI magnetic valve 9 by compressor 8 enters into the scroll plate of compressor 8.Unit is in operation, the temperature-sensitive bag is the detector tube channel temp constantly, system controller is constantly adjusted the aperture of EVI electric expansion valve 14 and the switching of EVI magnetic valve 9 according to the temperature comparative result, both guaranteed that air conditioner obtained good heating effect under worst cold case, guaranteed the reliability service of air conditioner again.
What need indicate is that the related personnel also belongs to protection scope of the present invention to any alteration of form or parts replacement that does not relate to basic structure and connected mode that the present invention makes.

Claims (8)

1, a kind of compressor air compensating system, described compressor air compensating system is used for air conditioner, described air conditioner also comprises the indoor set assembly, off-premises station assembly and connecting pipe, described indoor set assembly comprises indoor heat exchanger (1) and expansion valve (2), described off-premises station assembly comprises secondary cooling coil (16), throttle part (3) and outdoor heat exchanger (4), described throttle part (3) is composed in parallel by expansion valve (5) and check valve (6), described compressor air compensating system and indoor set assembly, the off-premises station assembly connects to form complete refrigerating circuit by pipeline, it is characterized in that: described compressor air compensating system comprises reservoir (7), compressor (8), EVI magnetic valve (9), throttling arrangement (10), first interface of described reservoir (7) is connected with throttling arrangement (10), be connected to first air entry of compressor (8) after the outer thermomechanical components of the second interface junction chamber of reservoir (7), the 3rd interface of reservoir (7) has connected second air entry that is connected to compressor (8) behind the EVI magnetic valve (9), and the pipeline of described connection reservoir (7) and EVI magnetic valve (9) is drawn from reservoir (7) top.
2, compressor air compensating system according to claim 1 is characterized in that: described compressor air compensating system also comprises three temperature-sensitive bags.
3, compressor air compensating system according to claim 2, it is characterized in that: the first temperature-sensitive bag (11) is arranged on the pipe surface that compressor (8) is connected with EVI magnetic valve (9), the second temperature-sensitive bag (12) is arranged on the pipe surface that reservoir (7) is connected with throttling arrangement (10), and the 3rd temperature-sensitive bag (13) is arranged on the position that can accurately experience outdoor environment temperature.
4, compressor air compensating system according to claim 3 is characterized in that: the described position that can accurately experience outdoor environment temperature is on the fin of outdoor heat exchanger (4).
5, compressor air compensating system according to claim 2 is characterized in that: described temperature-sensitive bag is a thermistor.
6, compressor air compensating system according to claim 1 is characterized in that: described throttling arrangement (10) is composed in parallel by EVI electric expansion valve (14) and check valve (15).
7, compressor air compensating system according to claim 1 is characterized in that: described compressor (8) is an enhancement mode air injection enthalpy-increasing digital scroll compressor.
8, a kind of tonifying Qi control method of compressor air compensating system is characterized in that may further comprise the steps:
(1), in system controller target setting temperature value T1 and T2, arrive step (2) then;
(2), sensing chamber's external environment temperature T 3, arrive step (3) then;
(3), detect the temperature T 4 that connects compressor and EVI magnetic valve pipeline; Arrive step (4) then;
(4), detect to connect the temperature T 5 of reservoir and throttling arrangement pipeline, comparison T4 and T5 try to achieve the difference T of T4 and T5, arrive step (5) then;
(5), by the relation of T and T1 relatively, draw the aperture of EVI electric expansion valve, arrive step (6) then;
(6), by the relation of T2 and T3 relatively, whether control EVI magnetic valve is opened, if unit continues operation, to step (2), if shut down, to step (7);
(7), finish to withdraw from.
CNB2005101208807A 2005-12-16 2005-12-16 Compensating system and compensating control method for compressor Active CN100439809C (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
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CN104566839A (en) * 2015-02-02 2015-04-29 珠海格力电器股份有限公司 Control method for enhanced vapor injection of air conditioner system
CN104634027A (en) * 2013-11-08 2015-05-20 珠海格力电器股份有限公司 Control method of enthalpy increasing air conditioning system
CN106765909A (en) * 2016-12-02 2017-05-31 珠海格力电器股份有限公司 The control method and its device of a kind of Two-stage Compression air-conditioning system
CN106839510A (en) * 2015-12-04 2017-06-13 无锡市汉马空调与通风设备有限公司 A kind of air-cooled heat pump trilogy supply air conditioner circulating system of waste heat recovery
CN107504729A (en) * 2017-07-31 2017-12-22 广东美的暖通设备有限公司 For controlling the method, apparatus and storage medium of air injection enthalpy-increasing system expansion valve
CN107655246A (en) * 2017-09-15 2018-02-02 广东芬尼能源技术有限公司 It is a kind of effectively to prevent from being vented too low double electronic expansion-valve control system and method
CN108072201A (en) * 2016-11-11 2018-05-25 开利公司 Heat pump system and its startup control method
CN108204691A (en) * 2017-12-28 2018-06-26 Tcl空调器(中山)有限公司 Air-conditioning system and its control method
CN113587262A (en) * 2021-07-26 2021-11-02 珠海格力电器股份有限公司 Outdoor unit, air conditioning system and control method thereof

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JPH11270918A (en) * 1998-03-24 1999-10-05 Daikin Ind Ltd Refrigerating device
JP2001033117A (en) * 1999-05-19 2001-02-09 Daikin Ind Ltd Refrigerating device
JP2001090684A (en) * 1999-09-22 2001-04-03 Daikin Ind Ltd Screw compressor and freezing device
CN1133047C (en) * 2001-03-14 2003-12-31 清华同方股份有限公司 Heat pump air conditioners suitable for cold area
CN1240944C (en) * 2002-04-09 2006-02-08 赵之海 Vortex compressor with gas compensation function
CN2615599Y (en) * 2003-02-14 2004-05-12 清华同方人工环境有限公司 Low-temperature air-cooling heat pump machine set
CN2670849Y (en) * 2003-12-17 2005-01-12 广东美的集团股份有限公司 Connecting structure of compressor paralleled mechanic set for air conditioner
KR20050072299A (en) * 2004-01-06 2005-07-11 삼성전자주식회사 Cooling and heating air conditioning system
CN1323267C (en) * 2004-12-31 2007-06-27 广东科龙电器股份有限公司 Multistage evaporation type air conditioner
CN2849548Y (en) * 2005-12-16 2006-12-20 珠海格力电器股份有限公司 Air supplying system for compressor

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CN104634027A (en) * 2013-11-08 2015-05-20 珠海格力电器股份有限公司 Control method of enthalpy increasing air conditioning system
CN104634027B (en) * 2013-11-08 2017-01-18 珠海格力电器股份有限公司 Control method of enthalpy increasing air conditioning system
CN104566839B (en) * 2015-02-02 2017-08-01 珠海格力电器股份有限公司 The control method of air-conditioning system air injection enthalpy-increasing
CN104566839A (en) * 2015-02-02 2015-04-29 珠海格力电器股份有限公司 Control method for enhanced vapor injection of air conditioner system
CN106839510A (en) * 2015-12-04 2017-06-13 无锡市汉马空调与通风设备有限公司 A kind of air-cooled heat pump trilogy supply air conditioner circulating system of waste heat recovery
CN108072201A (en) * 2016-11-11 2018-05-25 开利公司 Heat pump system and its startup control method
US11137170B2 (en) 2016-11-11 2021-10-05 Carrier Corporation Heat pump system and start up control method thereof
CN108072201B (en) * 2016-11-11 2022-02-01 开利公司 Heat pump system and start control method thereof
CN106765909A (en) * 2016-12-02 2017-05-31 珠海格力电器股份有限公司 The control method and its device of a kind of Two-stage Compression air-conditioning system
CN106765909B (en) * 2016-12-02 2019-04-30 珠海格力电器股份有限公司 A kind of control method and its device of Two-stage Compression air-conditioning system
CN107504729A (en) * 2017-07-31 2017-12-22 广东美的暖通设备有限公司 For controlling the method, apparatus and storage medium of air injection enthalpy-increasing system expansion valve
CN107504729B (en) * 2017-07-31 2020-03-17 广东美的暖通设备有限公司 Method, device and storage medium for controlling expansion valve of enhanced vapor injection system
CN107655246A (en) * 2017-09-15 2018-02-02 广东芬尼能源技术有限公司 It is a kind of effectively to prevent from being vented too low double electronic expansion-valve control system and method
CN108204691A (en) * 2017-12-28 2018-06-26 Tcl空调器(中山)有限公司 Air-conditioning system and its control method
CN113587262A (en) * 2021-07-26 2021-11-02 珠海格力电器股份有限公司 Outdoor unit, air conditioning system and control method thereof
CN113587262B (en) * 2021-07-26 2022-07-08 珠海格力电器股份有限公司 Outdoor unit, air conditioning system and control method thereof

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