CN102589217A - Refrigerant quantity control device, refrigerant quantity control method and air conditioner unit with control device - Google Patents
Refrigerant quantity control device, refrigerant quantity control method and air conditioner unit with control device Download PDFInfo
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- CN102589217A CN102589217A CN2011100041807A CN201110004180A CN102589217A CN 102589217 A CN102589217 A CN 102589217A CN 2011100041807 A CN2011100041807 A CN 2011100041807A CN 201110004180 A CN201110004180 A CN 201110004180A CN 102589217 A CN102589217 A CN 102589217A
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Abstract
The invention provides a refrigerant quantity control device, a refrigerant quantity control method and an air conditioner unit with the control device. The refrigerant quantity control device comprises a refrigerant transfer tank which is provided with a liquid inlet, and the liquid inlet is communicated with an air-liquid separator of the air conditioner unit through a liquid inlet valve. The air conditioner unit is provided with the refrigerant quantity control device. The refrigerant quantity control method includes: opening the liquid inlet valve, and transferring refrigerants in the air-liquid separator to the refrigerant transfer tank; and opening a pressure balancing valve and leading a pressure balancing opening of the refrigerant transfer tank to be communicated with an inlet of the air-liquid separator. By transferring the low-pressure refrigerants of the air-liquid separator to the refrigerant transfer tank through the liquid inlet valve, the level of the liquid refrigerants in the air-liquid separator is lowered, state control on middle transition containers including the air-liquid separator and the refrigerant transfer tank can be achieved, and accordingly safety of operation of the air conditioner unit and effectiveness of the refrigerant circulating quantity can be ensured.
Description
Technical field
The present invention relates to field of air conditioning, more specifically, relate to a kind of coolant quantity control device and method and have the air-conditioning unit of this control device.
Background technology
The air-conditioning unit is widely used in the various occasions that we work, live at present, for we provide comfortable work and living environment.Along with people's improves the requirement of air-conditioning system range of operation day by day, and traditional air-conditioning unit can not be met the need of market.Therefore, when guaranteeing comfortableness, be necessary further to improve the reliability of air-conditioning unit.
Common air-conditioning refrigeration system comprises compressor, high temperature heat source heat exchanger, throttle part, low-temperature heat source heat exchanger and piping system, can the assurance system under certain condition of work the security and the validity of operation.But, when service condition surpasses certain limit, then can't guarantee system's reliability service because systemic circulation coolant quantity regulating power is limited.When system is out of service, if it is too much to flow into the liquid refrigerants of gas-liquid separator, can cause liquid refrigerants to be back to compressor, cause the compressor liquid hammer and damage, influence the security of system.During normal the operation, if the cold medium shortage of circulation in the system then can cause refrigerating capacity not enough, refrigeration is not good, greatly reduces the validity of air conditioner refrigeration.
Summary of the invention
The present invention aims to provide a kind of air-conditioning unit that can effectively control the coolant quantity control device and the method for the liquid refrigerants amount of system, the validity of guaranteeing system's operation and security and have this control device.
According to an aspect of the present invention, a kind of coolant quantity control device is provided, has comprised the refrigerant transfer tank, the refrigerant transfer tank has inlet, and inlet is connected through the gas-liquid separator of feed liquor valve with the air-conditioning unit.
Further, the coolant quantity control device also comprises equilibrated valve, and an end of equilibrated valve is connected with the pressure balance mouth of refrigerant transfer tank, and its other end is connected with gas-liquid separator.
Further, the coolant quantity control device also comprises tapping valve, and an end of tapping valve is connected with the liquid outlet of refrigerant transfer tank, and its other end is connected with the middle pressure line segments of air-conditioning unit.
Further, the coolant quantity control device also comprises pressurizing valve, and an end of pressurizing valve is connected with the refrigerant transfer tank, and its other end is connected with the high-voltage tube highway section of air-conditioning unit.
Further, the valve in the coolant quantity control device is magnetic valve.
Further, equilibrated valve is connected with pressure balance mouth through pressure-equalizing passageway, and pressure balance mouth is arranged at the lower end of refrigerant transfer tank, and pressure-equalizing passageway passes pressure balance mouth and extends upward, and the outlet of pressure-equalizing passageway is higher than inlet.
According to another aspect of the present invention, a kind of air-conditioning unit is provided, the air-conditioning unit has aforesaid coolant quantity control device.
According to a further aspect of the invention, a kind of coolant quantity control method is provided, this method comprises: open the feed liquor valve, the refrigerant in the gas-liquid separator is transferred to the refrigerant transfer tank; The opening pressure balanced valve makes the pressure balance mouth of refrigerant transfer tank be connected with the inlet of gas-liquid separator.
Further, the coolant quantity control method is used when the air-conditioning unit is out of service.
Further, when the air-conditioning unit normally moved, the coolant quantity control method also comprised: close feed liquor valve and equilibrated valve, open pressurizing valve; Open tapping valve, the refrigerant in the refrigerant transfer tank is transferred to the middle pressure line segments of air-conditioning unit.
Adopt coolant quantity control device of the present invention and method and have the air-conditioning unit of this control device; Through the feed liquor valve low pressure refrigerant of gas-liquid separator is transferred to the refrigerant transfer tank; Reduce the inner liquid refrigerants liquid level of gas-liquid separator; Prevented that liquid refrigerants is back to compressor, and compressor is damaged because of liquid hammer, guaranteed the security of compressor operating.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the internal structure sketch map that has the air-conditioning unit of coolant quantity control device according to of the present invention.
The specific embodiment
Below with reference to accompanying drawing and combine embodiment, specify the present invention.
According to coolant quantity control device of the present invention, comprise refrigerant transfer tank 20, refrigerant transfer tank 20 has inlet, and inlet is connected with the gas-liquid separator 11 of air-conditioning unit through feed liquor valve 22.
As shown in Figure 1, owing to refrigerant transfer tank 20 is connected with gas-liquid separator 11 through feed liquor valve 22, therefore; When the liquid level in the gas-liquid separator 11 is too high; Open feed liquor valve 22, the low pressure refrigerant in the gas-liquid separator 11 is transferred to refrigerant transfer tank 20, reach control the fluid level condition of gas-liquid separator 11; Thereby guarantee the validity of air-conditioning unit operation refrigerant circulation, guarantee the security of compressor operating simultaneously.According to one embodiment of present invention; When the air-conditioning unit is out of service; Can the liquid refrigerants in the gas-liquid separator 11 be transferred to refrigerant transfer tank 20 through feed liquor valve 22, thereby effectively reduce the liquid level in the gas-liquid separator 11, guarantee the security when system starts once more.
As shown in Figure 1, preferably, the coolant quantity control device also comprises equilibrated valve 21, and an end of equilibrated valve 21 is connected with the pressure balance mouth of refrigerant transfer tank 20, and its other end is connected with gas-liquid separator 11.Equilibrated valve is connected with pressure balance mouth through pressure-equalizing passageway, and pressure balance mouth is arranged at the lower end of refrigerant transfer tank 20, and pressure-equalizing passageway passes pressure balance mouth and extends upward, and the outlet of pressure-equalizing passageway is higher than inlet.In the present embodiment, when opening feed liquor valve 22, open equilibrated valve 21, make gas-liquid separator 11 and refrigerant transfer tank 20 keep air pressure balance, guarantee that the refrigerant in the gas-liquid separator 11 can flow into refrigerant transfer tank 20.In addition; Pressure-equalizing passageway passes pressure balance mouth and extend in the refrigerant transfer tank 20; And extend upward, thereby can prevent that the refrigerant in the refrigerant transfer tank 20 too much is back in gas-liquid separator 11 or the compressor 10 through this pipeline to the top of the liquid outlet of refrigerant transfer tank 20.
Preferably, the coolant quantity control device also comprises pressurizing valve 23, and an end of pressurizing valve 23 is connected with refrigerant transfer tank 20, and its other end is connected with the high-voltage tube highway section 13 of air-conditioning unit.The coolant quantity control device also comprises tapping valve 24, and an end of tapping valve 24 is connected with the liquid outlet of refrigerant transfer tank 20, and its other end is connected with the middle pressure line segments 17 of air-conditioning unit.
According to one embodiment of present invention; The pressure and temperature parameter of detection system when air-conditioning system is moved; If systemic circulation cold medium shortage; Then discharge the liquid refrigerants in the refrigerant transfer tank 20,, so just can guarantee the validity of system's operation its middle pressure line segments 17 that is transferred to system through control.As shown in Figure 1, when system normally moves, divided for three steps realized the transfer of refrigerant.At first, close pressurizing valve 23 and tapping valve 24, open the equilibrated valve 21 and feed liquor valve 22 of refrigerant transfer tank 20 then, the low pressure refrigerant in the gas-liquid separator 11 is transferred in the refrigerant transfer tank 20.Secondly; Closing presure balanced valve 21 and feed liquor valve 22; Open pressurizing valve 23 and tapping valve 24, owing to pressurizing valve 23 is connected with high-voltage tube highway section 13, under the pressure effect in high-voltage tube highway section 13; Refrigerant in the refrigerant transfer tank 20 is transferred to the middle pressure line segments 17 of air-conditioning unit through tapping valve 24, makes refrigerant add to the in service of coolant circulating system.At last, when the refrigerant of mend makes the coolant quantity that circulates in the system enough, close pressurizing valve 23 and tapping valve 24, refrigerant transfer tank 20 returns to original state.
Preferably, the valve in the coolant quantity control device is magnetic valve.
Specifically, feed liquor valve 22, equilibrated valve 21, pressurizing valve 23 and tapping valve 24 are magnetic valve, to reach the accurate control to the cold medium flux that passes through these valves, also help system's controlling rapidly with accurately these valves simultaneously.
The present invention also provides a kind of air-conditioning unit, and the air-conditioning unit has aforesaid coolant quantity control device.
As shown in Figure 1, except comprising aforesaid coolant quantity control device, the air-conditioning unit also comprises conventional components such as compressor 10, indoor heat exchanger 19, outdoor heat exchanger 15 and cross valve 14, is not described in detail in this.The air-conditioning unit has been guaranteed the effective circulation coolant quantity of air-conditioning unit and the security of system's operation through the coolant quantity control device.
The present invention also provides a kind of coolant quantity control method, comprises opening feed liquor valve 22, and the refrigerant in the gas-liquid separator 11 is transferred to refrigerant transfer tank 20; Opening pressure balanced valve 21 makes the pressure balance mouth of refrigerant transfer tank 20 be connected with the inlet of gas-liquid separator 11.
Preferably, the coolant quantity control method in the present embodiment is used when the air-conditioning unit is out of service.When the air-conditioning unit is out of service, through opening feed liquor valve 22 refrigerant in the gas-liquid separator 11 is transferred to refrigerant transfer tank 20, thereby effectively reduce the liquid level in the gas-liquid separator 11, the security when guaranteeing that compressor is restarted.Equilibrated valve 21 makes the inlet of gas-liquid separator 11 be connected with the liquid outlet of refrigerant transfer tank 20, keeps the pressure balance of gas-liquid separator 11 and refrigerant transfer tank 20, makes the refrigerant in the gas-liquid separator 11 can successfully be transferred to refrigerant transfer tank 20.
When the air-conditioning unit normally moves, also comprise: close feed liquor valve 22 and equilibrated valve 21, open pressurizing valve 23; Open tapping valve 24, the refrigerant in the refrigerant transfer tank 20 is transferred to the middle pressure line segments 17 of air-conditioning unit.
According to another embodiment of the invention, when the air-conditioning unit normally moves, if it is not enough to detect the coolant quantity of circulation in the system; Close feed liquor valve 22 and equilibrated valve 21; Open pressurizing valve 23 and tapping valve 24, pressurize through 23 pairs of refrigerant transfer tank 20 of pressurizing valve, the refrigerant in the refrigerant transfer tank 20 is transferred to the middle pressure line segments 17 of air-conditioning unit through tapping valve 24 by high-voltage tube highway section 13; Thereby add to coolant circulating system, participate in the refrigerant circular flow.Present embodiment is applicable to the situation of systemic circulation cold medium shortage, can guarantee the validity of system's operation.
From above description, can find out that the above embodiments of the present invention have realized following technique effect:
1, when the air-conditioning unit operation; The pressure and temperature parameter of detection system is if the systemic circulation cold medium shortage then discharges the liquid refrigerants in the refrigerant transfer tank through control; With its middle pressure line segments that is transferred to system, so just can guarantee the validity of system's operation;
2, when the air-conditioning unit is out of service, the refrigerant of gas-liquid separator is transferred to the refrigerant transfer tank, guarantee the security when compressor is restarted.
More than be merely the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a coolant quantity control device is characterized in that, comprises refrigerant transfer tank (20), and said refrigerant transfer tank (20) has inlet, and said inlet is connected with the gas-liquid separator (11) of air-conditioning unit through feed liquor valve (22).
2. coolant quantity control device according to claim 1; It is characterized in that; Also comprise equilibrated valve (21), an end of said equilibrated valve (21) is connected with the pressure balance mouth of said refrigerant transfer tank (20), and its other end is connected with said gas-liquid separator (11).
3. coolant quantity control device according to claim 2; It is characterized in that; Also comprise tapping valve (24), an end of said tapping valve (24) is connected with the said liquid outlet of said refrigerant transfer tank (20), and its other end is connected with the middle pressure line segments (17) of air-conditioning unit.
4. coolant quantity control device according to claim 3 is characterized in that, also comprises pressurizing valve (23), and an end of said pressurizing valve (23) is connected with said refrigerant transfer tank (20), and its other end is connected with the high-voltage tube highway section (13) of air-conditioning unit.
5. according to each described coolant quantity control device in the claim 1 to 4, it is characterized in that the valve in the said coolant quantity control device is magnetic valve.
6. coolant quantity control device according to claim 2; It is characterized in that; Said equilibrated valve is connected with said pressure balance mouth through pressure-equalizing passageway; Said pressure balance mouth is arranged at the lower end of said refrigerant transfer tank (20), and said pressure-equalizing passageway passes said pressure balance mouth and extends upward, and the outlet of said pressure-equalizing passageway is higher than said inlet.
7. an air-conditioning unit is characterized in that, said air-conditioning unit has each described coolant quantity control device in the claim 1 to 6.
8. a coolant quantity control method is characterized in that, comprising:
Open feed liquor valve (22), the refrigerant in the gas-liquid separator (11) is transferred to refrigerant transfer tank (20);
Opening pressure balanced valve (21) makes the pressure balance mouth of refrigerant transfer tank (20) be connected with the inlet of gas-liquid separator (11).
9. coolant quantity control method according to claim 8 is characterized in that, said coolant quantity control method is used when the air-conditioning unit is out of service.
10. coolant quantity control method according to claim 8 is characterized in that, when the air-conditioning unit normally moves, also comprises: close feed liquor valve (22) and equilibrated valve (21), open pressurizing valve (23);
Open tapping valve (24), the refrigerant in the refrigerant transfer tank (20) is transferred to the middle pressure line segments (17) of air-conditioning unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110004180.7A CN102589217B (en) | 2011-01-10 | 2011-01-10 | Coolant quantity control device and method and there is the air-conditioner set of this control device |
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| CN201110004180.7A CN102589217B (en) | 2011-01-10 | 2011-01-10 | Coolant quantity control device and method and there is the air-conditioner set of this control device |
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| CN102589217A true CN102589217A (en) | 2012-07-18 |
| CN102589217B CN102589217B (en) | 2016-02-03 |
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| CN103363720A (en) * | 2013-08-06 | 2013-10-23 | 特灵空调系统(中国)有限公司 | Multi-functional air conditioner hot water system |
| CN103913005A (en) * | 2013-01-09 | 2014-07-09 | 美的集团股份有限公司 | Refrigeration system, control method for same, and air conditioner with refrigeration system |
| CN104390384A (en) * | 2014-10-15 | 2015-03-04 | 珠海格力电器股份有限公司 | Air conditioning system |
| CN104949375A (en) * | 2014-03-28 | 2015-09-30 | 珠海格力电器股份有限公司 | Air conditioning system and refrigerant adjustment and control method |
| CN105066491A (en) * | 2015-07-31 | 2015-11-18 | 华南理工大学 | Single-stage mixed working medium low-temperature refrigeration system and control method thereof |
| CN105716199A (en) * | 2016-02-06 | 2016-06-29 | 王圣泉 | Automatic adjusting device and method for pressure of air conditioner |
| CN106642450A (en) * | 2016-11-10 | 2017-05-10 | 珠海格力电器股份有限公司 | Multi-split refrigerant balancing system and multi-split air conditioner |
| CN107143680A (en) * | 2017-04-10 | 2017-09-08 | 新奥泛能网络科技股份有限公司 | Equilibrated valve and air-conditioning system |
| CN107178872A (en) * | 2017-05-18 | 2017-09-19 | 珠海格力电器股份有限公司 | A kind of refrigerant method of adjustment and device |
| CN111023271A (en) * | 2019-12-31 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Adjusting device and system of multi-split air conditioner refrigerant, control method of system and air conditioner |
| 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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| CN103363720A (en) * | 2013-08-06 | 2013-10-23 | 特灵空调系统(中国)有限公司 | Multi-functional air conditioner hot water system |
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| CN106642450A (en) * | 2016-11-10 | 2017-05-10 | 珠海格力电器股份有限公司 | Multi-split refrigerant balancing system and multi-split air conditioner |
| CN106642450B (en) * | 2016-11-10 | 2019-01-04 | 珠海格力电器股份有限公司 | Multi-connected machine refrigerant balance system and multi-gang air-conditioner |
| CN107143680A (en) * | 2017-04-10 | 2017-09-08 | 新奥泛能网络科技股份有限公司 | Equilibrated valve and air-conditioning system |
| CN107178872A (en) * | 2017-05-18 | 2017-09-19 | 珠海格力电器股份有限公司 | A kind of refrigerant method of adjustment and device |
| CN111023271A (en) * | 2019-12-31 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Adjusting device and system of multi-split air conditioner refrigerant, control method of system and air conditioner |
| 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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