CN1782575A - Device and method for controlling cold medium leakage of pipe fitting of one dragging more air conditioner - Google Patents
Device and method for controlling cold medium leakage of pipe fitting of one dragging more air conditioner Download PDFInfo
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- CN1782575A CN1782575A CN 200410093651 CN200410093651A CN1782575A CN 1782575 A CN1782575 A CN 1782575A CN 200410093651 CN200410093651 CN 200410093651 CN 200410093651 A CN200410093651 A CN 200410093651A CN 1782575 A CN1782575 A CN 1782575A
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Abstract
The present invention relates to device and method for controlling the refrigerant leakage of pipe fitting in a multi-split air conditioner. The device includes the following parts: connecting pipe fitting to connect the indoor unit and the outdoor unit, SVC valve installed to the outdoor unit side of the connecting pipe fitting, cutting part installed between the SVC valve and the outdoor unit, and outdoor unit controlling part for judging whether each of the indoor units meets the refrigerant leakage detection condition and regulating the cutting part. The present invention makes it possible to detect out indoor unit with refrigerant leakage and reduce refrigerant leakage via cut off the indoor unit or outdoor unit. The present invention can avoid danger of leaking great amount of refrigerant and raise product reliability.
Description
Technical field
The present invention relates to air-conditioner, in more detail, the present invention is the invention of the cold medium leakage of pipe fitting control device of the one-driven-several type air-conditioner of single pipe arrangement.
Background technology
Generally speaking, air-conditioner is to be arranged at spaces such as bedroom, living room, office or business shop, regulates by temperature, humidity, cleannes and air-flow to air, keeps the device of the comfortableness of indoor environment.Above-mentioned air-conditioner can be divided into integral type and split type substantially.
Above-mentioned integral air conditioner is identical substantially with the function of detachable air conditioner.But it is pointed out that integral air conditioner is the function integration with cooling and heat release, by being provided with in wall boring or on window, utilizing other devices to be provided with.Detachable air conditioner then is that the indoor set of/greenhouse operation cold with carrying out is arranged at the indoor, and the off-premises station that will carry out heat release and squeeze operation is arranged at the outside, has connected two machines that are separated from each other with coolant piping then.
Usually, corresponding to an indoor set, an off-premises station is set.But in having the building in a plurality of rooms,, to buy many off-premises stations equally corresponding to the indoor set that is arranged on each room.So, at first not too refined on attractive in appearance, and economical inadequately.In addition, owing to will consider that each off-premises station needs certain space, therefore using in the space neither be very effective.
Therefore, the air-conditioner of the comparison hot topic of exploitation is at present: on an off-premises station, connect a plurality of indoor sets, can carry out the one-driven-several type air-conditioner of cold/greenhouse operation simultaneously to a plurality of rooms.
Below, with reference to the accompanying drawings, general one-driven-several type air-conditioner is described.
Fig. 1 is the drawing that shows the refrigerant circulation of general one-driven-several type air-conditioner.Fig. 2 is the programme diagram of demonstration according to the structure of the one-driven-several type air-conditioner of single pipe arrangement of conventional art.
General one-driven-several type air-conditioner as shown in Figure 1, possessing has following several sections: be arranged at indoorly, possess a plurality of indoor heat exchanger 11a that finish cold/greenhouse function, the indoor set 10 of 11b, 11c are arranged; Be arranged at outdoor off-premises station 1.
Above-mentioned off-premises station possesses has following components to constitute: the inverter compressor 2 and the constant speed compressor 3 that are used for compression refrigerant; The refrigerant outdoor heat exchanger 5 of carrying out heat release to compression; Be arranged at a side of above-mentioned outdoor heat exchanger 5, promote the cooling fan 6 of refrigerant heat release.
When carrying out the cold-room operation, along with the flow direction of refrigerant, the downstream side of above-mentioned outdoor heat exchanger 5 possesses main electric expansion valve 12 is arranged.The downstream side of main electric expansion valve 12 possesses inferior electric expansion valve 13a, 13b, 13c is arranged.Here, the effect of above-mentioned electric expansion valve is: before refrigerant flows into relevant indoor heat exchanger 11a, 11b, 11c, refrigerant is carried out puffing.In addition, each outlet side of indoor heat exchanger 11a, 11b, 11c possesses and has: can detect the 1st temperature detection sensor 15a, the 15b of the temperature of the refrigerant of discharging among above-mentioned indoor heat exchanger 11a, 11b, the 11c,, 5c.
In addition, above-mentioned constant speed compressor 3 and inverter compressor 2 possess separately has: corresponding to the compressed capability of half (50%) of the maximum cold-room load of indoor set 10.And each discharged side before refrigerant flows into outdoor heat exchanger 5, mutually the interflow.Field, above-mentioned interflow possesses 2nd temperature detection sensor 4 of the detection of being useful on from the temperature of the refrigerant of each compressor 2,3 compression back discharge.
Next, illustrate that the cold-room operating process of above-mentioned one-driven-several type air-conditioner is as follows.
In above-mentioned compressor (2,3) gaseous coolant of the HTHP of compression in, to be induced to outdoor heat exchanger 5 by cubic valve, and in by the process of above-mentioned outdoor heat exchanger 5 by condensing, Entropy Changes turns to the liquid refrigerants of HTHP, at last, be induced to the suction side of compressor 2,3 again by cubic valve.
At this moment, by above-mentioned indoor heat exchanger 11a,, the refrigerant of 1b, 11c, will from room air, absorb heat, thereby evaporate.By carrying out the cold-room circulation repeatedly, need the temperature in the space of air conditioning to reduce.
For the common air-conditioner that connects an indoor set on the off-premises station, above-mentioned one-driven-several type air-conditioner then can utilize an off-premises station, simultaneously a plurality of rooms is carried out cold-room/greenhouse operation, therefore, in power consumption, on the expense and all very favourable on the space.
In addition, according to the one-driven-several type air-conditioner of single pipe arrangement of conventional art as shown in Figure 2, on an off-premises station 1, utilize a connecting pipings 40 to connect a plurality of indoor sets 10.And off-premises station 1 side of above-mentioned connecting pipings 40 is equipped with SVC valve 30.
As mentioned above, be connected under the situation of a connecting pipings 40 at a plurality of indoor sets 10, if the coolant leakage phenomenon takes place in any one indoor set in above-mentioned a plurality of indoor set 10, all refrigerants in the product (being air-conditioner) will all be released to the space that coolant leakage takes place.
Summary of the invention
The present invention proposes in order to improve above-mentioned problem.Therefore, the objective of the invention is: provide a kind of and can finish the pipe arrangement refrigerant that detects coolant leakage and cut off the one-driven-several type air-conditioner of coolant leakage simultaneously
Leakage control device and method thereof.
To achieve these goals, be equipped with on a connecting pipings in the one-driven-several type air-conditioner of single pipe arrangement of a plurality of indoor sets, feature of the present invention is to comprise that following components constitutes: a connecting pipings that connects above-mentioned off-premises station and indoor set; Be installed on the SVC valve of the outdoor pusher side of above-mentioned connecting pipings; Be installed on the cut-out portion between above-mentioned SVC valve and the above-mentioned off-premises station; Judge whether any one indoor set in above-mentioned a plurality of indoor set satisfies the coolant leakage testing conditions, thereby regulate the off-premises station control part that above-mentioned cut-out portion opens/closes.
Above-mentioned cut-out portion is made of the a plurality of the 1st and the 2nd solenoid valve.And, also should comprise following several sections and constitute: the current value test section, compressor discharge temperature test section, the high pressure determination part that are used to detect above-mentioned coolant leakage testing conditions.
In order to achieve the above object, on an off-premises station, the feature of cold medium leakage of pipe fitting control method of utilizing a pipe arrangement to be connected with the one-driven-several type air-conditioner of a plurality of indoor sets comprises following several stages and constitutes: in case the user imports the electric power starting order, to drive user-selected indoor set in above-mentioned a plurality of indoor sets, thereby detect the stage whether coolant leakage is arranged in the above-mentioned pipe arrangement; In case detected coolant leakage, then cut off the stage of above-mentioned off-premises station and indoor set.
Whether above-mentioned detection has the stage of coolant leakage, specifically should be the stage that judges whether to satisfy simultaneously following several conditions: whether high pressure is for below the setting pressure; Whether the compressor discharge temperature is for more than the design temperature; Whether current value is for setting below the current value.
Advantage and good effect: as mentioned above, the cold medium leakage of pipe fitting control device and the method thereof of foundation one-driven-several type air-conditioner of the present invention have following effect:
The first, can judge not only whether any one indoor set has coolant leakage in a plurality of indoor sets, can also reduce refrigerant and spill by cutting off chamber inside/outside machine.
The second, by cutting off chamber inside/outside machine, can prevent a large amount of coolant leakages to a place.
The 3rd, can finish coolant leakage automatically and detect and cut off, therefore can improve the reliability of user to product.
Description of drawings
Fig. 1 is the drawing of the refrigerant circulation of general one-driven-several type air-conditioner.
Fig. 2 is the block diagram according to the structure of the one-driven-several type air-conditioner of single pipe arrangement of conventional art.
Fig. 3 is the block diagram of the structure of one-driven-several type air-conditioner of the present invention.
Fig. 4 is the block diagram of structure of the cold medium leakage of pipe fitting control device of one-driven-several type air-conditioner of the present invention.
Fig. 5 is the FB(flow block) of the cold medium leakage of pipe fitting control method of one-driven-several type air-conditioner of the present invention.
The symbol description of accompanying drawing major part
10: indoor set 30:SVC valve (maintenance valve, auxiliary valve)
40: connecting pipings 100: off-premises station
101: current value test section 102: compressor discharge temperature test section
103: high pressure determination part 104: the off-premises station control part
105: the 105a of cut-out portion: the 1st solenoid valve
105b: the 2nd solenoid valve
The specific embodiment
Below, with reference to the accompanying drawings, the cold medium leakage of pipe fitting control device to according to one-driven-several type air-conditioner of the present invention is described in more detail.
Fig. 3 and Fig. 4 are the block diagrams of structure of the cold medium leakage of pipe fitting control device of one-driven-several type air-conditioner of the present invention.Fig. 5 is the FB(flow block) (Flow chart) of the cold medium leakage of pipe fitting control method of one-driven-several type air-conditioner of the present invention.
As shown in Figure 3, the cold medium leakage of pipe fitting control device of one-driven-several type air-conditioner of the present invention is to be made of following components: an off-premises station 100; A plurality of indoor sets 10; Be connected with a connecting pipings 40 of above-mentioned a plurality of indoor set 10; Be connected in the SVC valve 30 of off-premises station 100 sides of above-mentioned connecting pipings 40; Be connected in the cut-out portion 105 between above-mentioned off-premises station 100 and the above-mentioned SVC valve 30.
In addition, as shown in Figure 4, the structure that is used to control is: satisfy condition in case be used to detect current value test section 101, compressor discharge temperature test section 102 and the high pressure determination part 103 of the coolant leakage condition of above-mentioned a plurality of indoor set 10, then control the ON/OFF of above-mentioned cut-out portion 105, thereby reduce the off-premises station control part 104 of refrigerant leakage.
Above-mentioned cut-out portion 105 is (105b) to be made of the a plurality of the 1st and the 2nd solenoid valve (105a).The the above-mentioned the 1st and the 2nd solenoid valve (105a) (105b) is installed on above-mentioned SVC valve 30 front ends.
That is, above-mentioned off-premises station control part 104 will judge that whether in above-mentioned a plurality of indoor set 10 any one has coolant leakage, promptly judges whether to satisfy the coolant leakage condition.When detecting coolant leakage, above-mentioned off-premises station control part will close constitute above-mentioned cut-out portion 105 the 1st and the 2nd solenoid valve (105a) (105b), thereby can cut off above-mentioned off-premises station 100 and above-mentioned a plurality of indoor set 10.
Along with the above-mentioned the 1st and the 2nd solenoid valve (105a) closing (105b), above-mentioned off-premises station 100 will reclaim refrigerant.
Above-mentioned coolant leakage condition should satisfy following all conditions: be lower than by above-mentioned current value test section 101 detected current values and set more than the current value; Discharge temperature by above-mentioned compressor discharge temperature test section 102 detected compressors exceeds more than the design temperature with respect to proper temperature; , hang down more than the setting pressure for suitable pressure by above-mentioned high pressure determination part 103 detected high pressure phases.
As shown in Figure 5, the cold medium leakage of pipe fitting control method of the foundation one-driven-several type air-conditioner of the present invention that constitutes as mentioned above is as follows.In case the user imports the electric power starting order, user-selected indoor set (S101-S102) in the above-mentioned indoor set will be driven.
Then, carry out the coolant leakage detection and judge whether above-mentioned indoor set satisfies coolant leakage testing conditions (S103).
Then,, then close cut-out portion, cut off above-mentioned off-premises station and indoor set (S104) by the operated by solenoid threshold switch if above-mentioned judged result (S103) satisfies the coolant leakage testing conditions.
Then, return the above-mentioned stage (S103), if do not satisfy above-mentioned coolant leakage testing conditions, at this moment, if the user does not import the power-off order, then continue to drive above-mentioned indoor set, keep each solenoid valve opening and continue to judge whether to satisfy coolant leakage condition (S106).
Then, in case the user imports the power-off order, with termination routine (S105).
Claims (5)
1. the cold medium leakage of pipe fitting control device of an one-driven-several type air-conditioner is characterized in that being equipped with on a connecting pipings and includes following several sections in the one-driven-several type air-conditioner of single pipe arrangement of a plurality of indoor sets and constitute: a connecting pipings that connects off-premises station and indoor set; Be installed on the SVC valve of the outdoor pusher side of connecting pipings; Be installed on the cut-out portion between SVC valve and the above-mentioned off-premises station; Judge whether any one indoor set in a plurality of indoor sets satisfies the coolant leakage testing conditions, thereby regulate the off-premises station control part that above-mentioned cut-out portion opens/closes.
2. the cold medium leakage of pipe fitting control device of one-driven-several type air-conditioner according to claim 1 is characterized in that: above-mentioned cut-out portion is made of the a plurality of the 1st and the 2nd solenoid valve.
3. the cold medium leakage of pipe fitting control device of one-driven-several type air-conditioner according to claim 1 is characterized in that: also include following several sections: the current value test section, compressor discharge temperature test section, the high pressure determination part that are used to detect above-mentioned coolant leakage condition.
4. the cold medium leakage of pipe fitting control method of an one-driven-several type air-conditioner, it is characterized in that constituting: in case the user imports the electric power starting order by following several stages, to drive user-selected indoor set in above-mentioned a plurality of indoor sets, thereby detect the stage whether coolant leakage is arranged in the above-mentioned pipe arrangement; In case detected coolant leakage, then closed solenoid operation valve cuts off the stage of above-mentioned off-premises station and indoor set, if there is not coolant leakage, the 1.2nd solenoid operated valve is kept opening, and each indoor set continues to drive and continue to have judged whether that the coolant leakage stage is to power-off.
5. the cold medium leakage of pipe fitting control method of one-driven-several type air-conditioner according to claim 4, it is characterized in that: whether above-mentioned detection has the stage of coolant leakage, and specifically should be for judging whether to satisfy simultaneously the stage of following several conditions: whether high pressure be for below the setting pressure; Whether the compressor discharge temperature is for more than the design temperature; Whether current value is for setting below the current value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410093651 CN1782575A (en) | 2004-11-29 | 2004-11-29 | Device and method for controlling cold medium leakage of pipe fitting of one dragging more air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410093651 CN1782575A (en) | 2004-11-29 | 2004-11-29 | Device and method for controlling cold medium leakage of pipe fitting of one dragging more air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN1782575A true CN1782575A (en) | 2006-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410093651 Pending CN1782575A (en) | 2004-11-29 | 2004-11-29 | Device and method for controlling cold medium leakage of pipe fitting of one dragging more air conditioner |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749825B (en) * | 2008-12-04 | 2012-10-03 | 珠海格力电器股份有限公司 | Refrigerant additional control method for composite air conditioner |
| CN101929706B (en) * | 2009-06-26 | 2012-11-21 | 珠海格力电器股份有限公司 | Air conditioner and control method thereof |
| CN103221751A (en) * | 2010-12-03 | 2013-07-24 | 三菱电机株式会社 | Air-conditioning apparatus |
| CN104121737A (en) * | 2014-08-13 | 2014-10-29 | 广东志高暖通设备股份有限公司 | Single cooling water source multi-on line unit |
| CN104132492A (en) * | 2014-08-13 | 2014-11-05 | 广东志高暖通设备股份有限公司 | Single-cold-water-source multi-split air conditioner machine |
| CN104374056A (en) * | 2013-08-16 | 2015-02-25 | 南京天加空调设备有限公司 | Refrigerant leakage protection control method for multi-split air conditioners |
| CN106123205A (en) * | 2016-06-17 | 2016-11-16 | 美的集团武汉制冷设备有限公司 | Moveable air conditioner and coolant leakage detection method thereof |
| CN108307648A (en) * | 2015-04-28 | 2018-07-20 | 大金工业株式会社 | Air-conditioning device |
| CN110940046A (en) * | 2018-09-21 | 2020-03-31 | 奥克斯空调股份有限公司 | Refrigerant leakage detection method and air conditioner |
| CN112432257A (en) * | 2020-12-08 | 2021-03-02 | 合肥美的暖通设备有限公司 | Refrigerant cuts device and air conditioning system |
| CN112432258A (en) * | 2020-12-08 | 2021-03-02 | 合肥美的暖通设备有限公司 | Refrigerant cuts device and air conditioning system |
| CN114279043A (en) * | 2021-12-08 | 2022-04-05 | 珠海格力电器股份有限公司 | Refrigerant shortage processing method and device, multi-split air conditioner and storage medium |
| CN115183396A (en) * | 2022-06-23 | 2022-10-14 | 青岛海尔空调电子有限公司 | Refrigerant leakage control method and system of air conditioner and air conditioner |
-
2004
- 2004-11-29 CN CN 200410093651 patent/CN1782575A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749825B (en) * | 2008-12-04 | 2012-10-03 | 珠海格力电器股份有限公司 | Refrigerant additional control method for composite air conditioner |
| CN101929706B (en) * | 2009-06-26 | 2012-11-21 | 珠海格力电器股份有限公司 | Air conditioner and control method thereof |
| CN103221751A (en) * | 2010-12-03 | 2013-07-24 | 三菱电机株式会社 | Air-conditioning apparatus |
| CN103221751B (en) * | 2010-12-03 | 2016-04-06 | 三菱电机株式会社 | Conditioner |
| CN104374056A (en) * | 2013-08-16 | 2015-02-25 | 南京天加空调设备有限公司 | Refrigerant leakage protection control method for multi-split air conditioners |
| CN104121737A (en) * | 2014-08-13 | 2014-10-29 | 广东志高暖通设备股份有限公司 | Single cooling water source multi-on line unit |
| CN104132492A (en) * | 2014-08-13 | 2014-11-05 | 广东志高暖通设备股份有限公司 | Single-cold-water-source multi-split air conditioner machine |
| CN108307648A (en) * | 2015-04-28 | 2018-07-20 | 大金工业株式会社 | Air-conditioning device |
| CN106123205A (en) * | 2016-06-17 | 2016-11-16 | 美的集团武汉制冷设备有限公司 | Moveable air conditioner and coolant leakage detection method thereof |
| CN106123205B (en) * | 2016-06-17 | 2019-07-30 | 美的集团武汉制冷设备有限公司 | Moveable air conditioner and its coolant leakage detection method |
| CN110940046A (en) * | 2018-09-21 | 2020-03-31 | 奥克斯空调股份有限公司 | Refrigerant leakage detection method and air conditioner |
| CN112432257A (en) * | 2020-12-08 | 2021-03-02 | 合肥美的暖通设备有限公司 | Refrigerant cuts device and air conditioning system |
| CN112432258A (en) * | 2020-12-08 | 2021-03-02 | 合肥美的暖通设备有限公司 | Refrigerant cuts device and air conditioning system |
| CN112432257B (en) * | 2020-12-08 | 2022-06-07 | 合肥美的暖通设备有限公司 | Refrigerant cuts device and air conditioning system |
| CN114279043A (en) * | 2021-12-08 | 2022-04-05 | 珠海格力电器股份有限公司 | Refrigerant shortage processing method and device, multi-split air conditioner and storage medium |
| CN114279043B (en) * | 2021-12-08 | 2022-11-25 | 珠海格力电器股份有限公司 | Refrigerant shortage processing method and device, multi-split air conditioner and storage medium |
| CN115183396A (en) * | 2022-06-23 | 2022-10-14 | 青岛海尔空调电子有限公司 | Refrigerant leakage control method and system of air conditioner and air conditioner |
| CN115183396B (en) * | 2022-06-23 | 2024-02-23 | 青岛海尔空调电子有限公司 | Refrigerant leakage control method and system of air conditioner and air conditioner |
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Open date: 20060607 |