CN1982798A - Air supplementing system and air supplementing control method for compressor - Google Patents

Air supplementing system and air supplementing control method for compressor Download PDF

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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
evi
temperature
air supply
supply 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

本发明提供一种压缩机补气系统及补气控制方法，涉及空调领域。使用该系统的空调机，从储液器顶部引一路饱和制冷剂气体通过EVI电磁阀从压缩机的第二吸气口进入压缩机参与循环。本发明的一个特征在于：包括储液器、压缩机、EVI电磁阀、节流装置，所述储液器的第一接口与节流装置连接，储液器的第二接口连接室外机组件后再连接到压缩机的第一吸气口，储液器的第三接口连接了EVI电磁阀后再连接到压缩机的第二吸气口，所述连接储液器和EVI电磁阀的管道从储液器顶部引出。通过补气控制方法来调整电子膨胀阀的开度和电磁阀的开闭。本发明的优点在于：解决了空调机在低温工况下达到预定制热效果的问题，保证了整个空调机组运行的可靠性。

Figure 200510120880

The invention provides a compressor air replenishment system and an air replenishment control method, which relate to the field of air conditioning. The air conditioner using this system leads a path of saturated refrigerant gas from the top of the accumulator through the EVI solenoid valve and enters the compressor from the second suction port of the compressor to participate in the cycle. A feature of the present invention is that it includes a liquid accumulator, a compressor, an EVI solenoid valve, and a throttling device, the first interface of the liquid accumulator is connected to the throttling device, and the second interface of the liquid accumulator is connected to the outdoor unit assembly Then connected to the first suction port of the compressor, the third interface of the accumulator is connected to the EVI solenoid valve and then connected to the second suction port of the compressor, the pipeline connecting the liquid reservoir and the EVI solenoid valve is from Reservoir top leads out. The opening degree of the electronic expansion valve and the opening and closing of the solenoid valve are adjusted by the air supply control method. The invention has the advantages of solving the problem that the air conditioner achieves the predetermined heating effect under the low temperature working condition, and ensuring the reliability of the operation of the whole air conditioner unit.

Figure 200510120880

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、一种压缩机补气系统，所述压缩机补气系统用于空调机，所述空调机还包括室内机组件、室外机组件及连接管道，所述室内机组件包括室内换热器(1)和膨胀阀(2)，所述室外机组件包括副冷却盘管(16)、节流部件(3)和室外换热器(4)，所述节流部件(3)由膨胀阀(5)和单向阀(6)并联组成，所述压缩机补气系统与室内机组件、室外机组件通过管道连接组成完整的制冷回路，其特征在于：所述的压缩机补气系统包括储液器(7)、压缩机(8)、EVI电磁阀(9)、节流装置(10)，所述储液器(7)的第一接口与节流装置(10)连接，储液器(7)的第二接口连接室外机组件后再连接到压缩机(8)的第一吸气口，储液器(7)的第三接口连接了EVI电磁阀(9)后再连接到压缩机(8)的第二吸气口，所述连接储液器(7)和EVI电磁阀(9)的管道从储液器(7)顶部引出。1. A compressor air supply system, the compressor air supply system is used in an air conditioner, and the air conditioner also includes an indoor unit assembly, an outdoor unit assembly and a connecting pipe, and the indoor unit assembly includes an indoor heat exchanger ( 1) and an expansion valve (2), the outdoor unit assembly includes a secondary cooling coil (16), a throttling component (3) and an outdoor heat exchanger (4), and the throttling component (3) is controlled by the expansion valve ( 5) and a one-way valve (6) connected in parallel, the air supply system of the compressor is connected with the indoor unit assembly and the outdoor unit assembly through pipelines to form a complete refrigeration circuit, and it is characterized in that: the air supply system of the compressor includes a storage Liquid container (7), compressor (8), EVI solenoid valve (9), throttling device (10), the first interface of the liquid reservoir (7) is connected with the throttling device (10), and the liquid reservoir The second port of (7) is connected to the outdoor unit assembly and then connected to the first suction port of the compressor (8). The third port of the liquid reservoir (7) is connected to the EVI solenoid valve (9) and then connected to the compressor The second suction port of the machine (8), the pipeline connecting the liquid reservoir (7) and the EVI electromagnetic valve (9) is drawn from the top of the liquid reservoir (7). 2、根据权利要求1所述的压缩机补气系统，其特征在于：所述压缩机补气系统还包括三个感温包。2. The compressor air supply system according to claim 1, characterized in that: the compressor air supply system further comprises three temperature-sensing bulbs. 3、根据权利要求2所述的压缩机补气系统，其特征在于：第一感温包(11)设置在压缩机(8)与EVI电磁阀(9)连接的管道表面，第二感温包(12)设置在储液器(7)与节流装置(10)连接的管道表面，第三感温包(13)设置在能够准确感受室外环境温度的位置。3. The compressor air supply system according to claim 2, characterized in that: the first temperature sensing package (11) is set on the surface of the pipeline connecting the compressor (8) and the EVI solenoid valve (9), and the second temperature sensing The bag (12) is arranged on the surface of the pipeline where the liquid reservoir (7) is connected to the throttling device (10), and the third temperature-sensing bag (13) is arranged at a position where it can accurately sense the temperature of the outdoor environment. 4、根据权利要求3所述的压缩机补气系统，其特征在于：所述能够准确感受室外环境温度的位置是室外换热器(4)的翅片上。4. The compressor air supply system according to claim 3, characterized in that: the position where the temperature of the outdoor environment can be accurately sensed is on the fins of the outdoor heat exchanger (4). 5、根据权利要求2所述的压缩机补气系统，其特征在于：所述的感温包为热敏电阻。5. The compressor air supply system according to claim 2, characterized in that: said temperature sensing package is a thermistor. 6、根据权利要求1所述的压缩机补气系统，其特征在于：所述的节流装置(10)由EVI电子膨胀阀(14)与单向阀(15)并联组成。6. The compressor air supply system according to claim 1, characterized in that: the throttling device (10) is composed of an EVI electronic expansion valve (14) and a check valve (15) connected in parallel. 7、根据权利要求1所述的压缩机补气系统，其特征在于：所述的压缩机(8)为增强型喷气增焓数码涡旋压缩机。7. The compressor air supply system according to claim 1, characterized in that: said compressor (8) is an enhanced air jet enthalpy increasing digital scroll compressor. 8、一种压缩机补气系统的补气控制方法，其特征在于包括以下步骤：8. A gas supplement control method for a compressor supplement air system, characterized in that it comprises the following steps: (1)、在系统控制器中设定目标温度值T1和T2，然后到步骤(2)；(1), set target temperature value T1 and T2 in the system controller, then to step (2); (2)、检测室外环境温度T3，然后到步骤(3)；(2), detect outdoor environment temperature T3, then to step (3); (3)、检测连接压缩机与EVI电磁阀管道的温度T4；然后到步骤(4)；(3), detect the temperature T4 that connects compressor and EVI electromagnetic valve pipeline; Then to step (4); (4)、检测连接储液器与节流装置管道的温度T5，比较T4和T5，求得T4和T5的差值T，然后到步骤(5)；(4), detect the temperature T5 of connecting liquid reservoir and throttling device pipeline, compare T4 and T5, obtain the difference T of T4 and T5, then to step (5); (5)、通过比较T和T1的关系，得出EVI电子膨胀阀的开度，然后到步骤(6)；(5), by comparing the relationship between T and T1, draw the opening of the EVI electronic expansion valve, and then go to step (6); (6)、通过比较T2和T3的关系，控制EVI电磁阀是否开启，如果机组继续运行，到步骤(2)，如果停机，到步骤(7)；(6), by comparing the relationship between T2 and T3, control whether the EVI electromagnetic valve is opened, if the unit continues to run, go to step (2), if stop, go to step (7); (7)、结束退出。(7), end exit.
CNB2005101208807A 2005-12-16 2005-12-16 Air supply system for compressor and air supply control method Expired - Fee Related CN100439809C (en)

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