CN105157189A - Air conditioning system and pressure control method - Google Patents

Air conditioning system and pressure control method Download PDF

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Publication number
CN105157189A
CN105157189A CN201510681354.1A CN201510681354A CN105157189A CN 105157189 A CN105157189 A CN 105157189A CN 201510681354 A CN201510681354 A CN 201510681354A CN 105157189 A CN105157189 A CN 105157189A
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CN
China
Prior art keywords
conditioning system
air
pressure
fault
described air
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
CN201510681354.1A
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Chinese (zh)
Inventor
刘会虎
陈卫东
刘红斌
尹汉锴
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.)
Guangdong Chigo Heating and Ventilation Equipment Co Ltd
Original Assignee
Guangdong Chigo Heating and Ventilation Equipment Co Ltd
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 Guangdong Chigo Heating and Ventilation Equipment Co Ltd filed Critical Guangdong Chigo Heating and Ventilation Equipment Co Ltd
Priority to CN201510681354.1A priority Critical patent/CN105157189A/en
Publication of CN105157189A publication Critical patent/CN105157189A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/40Pressure, e.g. wind pressure

Abstract

The embodiment of the invention provides an air conditioning system which is used for avoiding pipeline burst caused when the pressure of the air conditioning system exceeds the limit value of the air conditioning system and improving the safe operation of the system. According to the technical scheme, the air conditioning system comprises a compressor, a four-way valve, a condenser, a throttling element, an evaporator and a gas and liquid separator which are connected in sequence, a first heat exchange draught fan is arranged on one side of the evaporator, a second heat exchange draught fan is arranged on one side of the condenser, a high-pressure sensor and a high-pressure switch are arranged between the compressor and the four-way valve, and a low-pressure switch is arranged between the compressor and the gas and liquid separator.

Description

A kind of air-conditioning system and compress control method
Technical field
The embodiment of the present invention relates to air-conditioning technical field, particularly relates to the compress control method of a kind of air-conditioning system and this air-conditioning system.
Background technology
The a lot of Air-conditioning Enterprise of current China, in Air-conditioner design, does not carry out special Explosion-proof Design for air-conditioning system.As everyone knows, the air-conditioning of air-conditioning manufacturer production is semi-finished product, must pass through correct installation, normal use of can delivering to customer, and has an important step in centre, installs exactly.
Current a lot of middle-size and small-size Air-conditioning Enterprise adopts air-conditioning to install outsourcing policy, therefore be difficult to the installation quality having controlled Own Brand air-conditioning, and then occur that air-conditioning does not vacuumize or not emptying, air, nitrogen will be there is in such system, this directly affects result of use and the service life of air-conditioning to a great extent, also likely causes system report fault or local booster.In this case, carry out maintenance process to air-conditioning, the refrigerant in system may reclaim by maintenance personal, and this event probably causing air-conditioning to explode even occurs security incident.
Summary of the invention
The embodiment of the present invention provides a kind of air-conditioning system, the pipelines from bursting caused when exceeding air-conditioning system limiting value for avoiding air-conditioning system pressure, improves the safe operation of system.
The technical scheme of a kind of air-conditioning system of the embodiment of the present invention comprises:
The compressor connected successively, cross valve, condenser, restricting element, evaporimeter, gas-liquid separator, the side of described evaporimeter is provided with the first heat exchange blower fan, the side of described condenser is provided with the second heat exchange blower fan, be provided with high pressure sensor and high-voltage switch gear between described compressor and described cross valve, between described compressor and described gas-liquid separator, be provided with low tension switch.
The embodiment of the present invention also provides a kind of compress control method of air-conditioning system, comprising:
When air-conditioning system is holding state, high pressure sensor detects the equalizing pressure of described air-conditioning system;
Judge whether described equalizing pressure is less than the first preset pressure, when described equalizing pressure is greater than described first preset pressure, then air-conditioning system initial start.
Preferably,
Judge whether described equalizing pressure is less than the first preset pressure, when described equalizing pressure is greater than described first preset pressure, then also comprise after air-conditioning system initial start:
When after described air-conditioning system initial start, high pressure sensor detects pressure at expulsion and judges whether described pressure at expulsion is greater than the second preset pressure;
If so, then described air-conditioning system stoppage protection;
If not, described air-conditioning system is normally run.
Preferably,
Described air-conditioning system also comprises after normally running:
Described air-conditioning system obtains preset time T 1, T 2corresponding pressure value Pc 1', Pc 2', and according to described pressure value Pc 1', Pc 2' determines whether described air-conditioning system exists malfunction.
Preferably,
Described air-conditioning system obtains preset time T 1, T 2corresponding pressure value Pc 1', Pc 2', and according to described pressure value Pc 1', Pc 2' determines whether described air-conditioning system exists malfunction and specifically comprise:
Described air-conditioning system obtains preset time T 1, T 2corresponding pressure value Pc 1', Pc 2', judges whether | Pc 1'-Pc 2' |>=preset pressure, if so, then there is fault in described air-conditioning system, and automatically report fault.
Preferably,
Described air-conditioning system obtains preset time T 1, T 2corresponding pressure value Pc 1', Pc 2', judge whether | Pc 1'-Pc 2' |>=preset pressure, if so, then there is fault in described air-conditioning system, and report fault specifically comprises automatically:
Measure described T continuous three times 1, T 2corresponding pressure value Pc 1', Pc 2', judges whether successively | Pc 1'-Pc 2' |>=preset pressure, if so, then there is fault in described air-conditioning system, and automatically report fault.
Preferably,
Described air-conditioning system obtains preset time T 1, T 2corresponding pressure value Pc 1', Pc 2', judges whether | Pc 1'-Pc 2' |>=preset pressure, if so, then there is fault in described air-conditioning system, and report fault specifically comprises automatically:
Measure described T in triplicate 1, T 2corresponding pressure value Pc 1', Pc 2', until three times judge | Pc 1'-Pc 2' | be all not less than preset pressure, then there is fault in described air-conditioning system, and automatically report fault.
Preferably,
Described preset pressure is 0.35Mpa.
The beneficial effect of employing technique scheme is:
Because this air-conditioning system comprises compressor, cross valve, condenser, restricting element, evaporimeter, the gas-liquid separator connected successively, the side of evaporimeter is provided with the first heat exchange blower fan, the side of condenser is provided with the second heat exchange blower fan, high pressure sensor and high-voltage switch gear is provided with between compressor and cross valve, when air-conditioning system initial start, high pressure sensor detects the pressure at expulsion of air-conditioning system and judges whether pressure at expulsion is greater than air-conditioning system maximum pressure value; If so, then air-conditioning system stoppage protection; If not, then air-conditioning system is normally run, and adopts technique scheme, then avoid the pipelines from bursting caused when air-conditioning system pressure exceedes air-conditioning system limiting value, improve the safe operation of system.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is the structure chart of a kind of air-conditioning system of the embodiment of the present invention;
Fig. 2 is the flow chart of the compress control method of a kind of air-conditioning system of the embodiment of the present invention;
Fig. 3 is the pressure variation of the compress control method of a kind of air-conditioning system of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, the technical scheme of a kind of air-conditioning system of the embodiment of the present invention comprises:
The compressor 1 connected successively, cross valve 2, condenser 8, restricting element 7, evaporimeter 4, gas-liquid separator 10, the side of evaporimeter 4 is provided with the first heat exchange blower fan 5, the side of condenser 8 is provided with the second heat exchange blower fan 9, be provided with high pressure sensor 11 and high-voltage switch gear 12 between compressor 1 and cross valve 2, between compressor 1 and gas-liquid separator 10, be provided with low tension switch 13.
When heating, the gases at high pressure that compressor 1 is discharged enter evaporimeter 4 through cross valve 2 gentle side stop valve 3, gases at high pressure are exothermic condensation in evaporimeter 4, first heat exchange blower fan 5 is for strengthening the heat transfer effect of evaporimeter 4 and indoor environment, condensed refrigerant liquid enters condenser 8 and carries out heat absorption evaporation after liquid side stop valve 6 and restricting element 7 throttling, second heat exchange blower fan 9 is for the heat transfer effect of condenser 8 with outdoor environment, low-pressure gas after evaporation endothermic enters gas-liquid separator 10 by cross valve 2, and then get back to compressor 1, complete and heat circulation.
During refrigeration, the gases at high pressure that compressor 1 is discharged enter condenser 8 through cross valve 2 and carry out exothermic condensation, second heat exchange blower fan 9 is for the heat transfer effect of condenser 8 with outdoor environment, condensed refrigerant liquid enters evaporimeter 4 and carries out heat absorption evaporation after restricting element 7 and stop valve 6 throttling of liquid side, first heat exchange blower fan 5 is for strengthening the heat transfer effect of evaporimeter 4 and indoor environment, low-pressure gas indoor after the evaporation of side enters compressor 1 after gas side stop valve 3 with cross valve 2, completes kind of refrigeration cycle.
Owing to being provided with high pressure sensor 11 and high-voltage switch gear 12 between compressor 1 and cross valve 2, be provided with low tension switch 13 between compressor 1 and gas-liquid separator 10, high pressure sensor 11 and high-voltage switch gear 12 are for detecting the pressure at expulsion of the compressor of air-conditioning system.
Because this air-conditioning system comprises compressor 1, cross valve 2, condenser 8, restricting element 7, evaporimeter 4, the gas-liquid separator 10 connected successively, the side of evaporimeter 4 is provided with the first heat exchange blower fan 5, the side of condenser 8 is provided with the second heat exchange blower fan 9, high pressure sensor 11 and high-voltage switch gear 12 is provided with between compressor 1 and cross valve 2, when air-conditioning system initial start, high pressure sensor 11 detects the pressure at expulsion of air-conditioning system and judges whether pressure at expulsion is greater than air-conditioning system maximum pressure value; If so, then air-conditioning system stoppage protection; If not, then air-conditioning system is normally run, and adopts technique scheme, then avoid the pipelines from bursting caused when air-conditioning system pressure exceedes air-conditioning system limiting value, improve the safe operation of system.
Refer to Fig. 2 and Fig. 3, the embodiment of the present invention also provides a kind of compress control method according to above-mentioned air-conditioning system, comprising:
201, high pressure sensor detects the equalizing pressure of air-conditioning system;
It should be noted that, when air-conditioning system is holding state, high pressure sensor detects the equalizing pressure of air-conditioning system.
202, judge whether equalizing pressure is less than the first preset pressure;
In the present embodiment, judge whether equalizing pressure is less than the first preset pressure, the first preset pressure be air-conditioning system standby time, the equilibrium pressure force value of the corresponding environment temperature of the coolant system of air-conditioning system, is generally 0.2MPa.It should be noted that, when equalizing pressure is less than the first preset pressure, air-conditioning system stoppage protection; When equalizing pressure is greater than the first preset pressure, then perform step 203.
203, air-conditioning system initial start.
In general, when equalizing pressure is greater than the first preset pressure, then air-conditioning system initial start; When equalizing pressure is less than the first preset pressure, air-conditioning system stoppage protection.
It should be noted that, can further include after step 203:
When after air-conditioning system initial start, high pressure sensor detects pressure at expulsion and also judges whether pressure at expulsion is greater than the second preset pressure, and the second preset pressure is air-conditioning system maximum pressure value, if so, then air-conditioning system stoppage protection; If not, then air-conditioning system is normally run.
Further, air-conditioning system also comprises after normally running:
Air-conditioning system obtains preset time T 1, T 2corresponding pressure value Pc 1', Pc 2', and according to pressure value Pc 1', Pc 2' determines whether air-conditioning system exists malfunction, is specifically as follows:.
Air-conditioning system obtains preset time T 1, T 2corresponding pressure value Pc 1', Pc 2', judges whether | Pc 1'-Pc 2' |>=preset pressure, if so, then there is fault in air-conditioning system, and automatically report fault.
Air-conditioning system obtains preset time T 1, T 2corresponding pressure value Pc 1', Pc 2', judges whether | Pc 1'-Pc 2' |>=preset pressure, if so, then there is fault in air-conditioning system, and automatically report fault.Specifically comprise: measure T continuous three times 1, T 2corresponding pressure value Pc 1', Pc 2', judges whether successively | Pc 1'-Pc 2' |>=preset pressure, if so, then there is fault in air-conditioning system, and automatically report fault; Or measure T in triplicate 1, T 2corresponding pressure value Pc 1', Pc 2', until three times judge | Pc 1'-Pc 2' | be all not less than preset pressure, then there is fault in air-conditioning system, and automatically report fault, is understandable that, can measure T first three times 1, T 2corresponding pressure value Pc 1', Pc 2judge again after ', equally also first can measure a T 1, T 2corresponding pressure value Pc 1', Pc 2judge after ', then in triplicate.
As shown in Figure 3, Pc1 is the equalizing pressure of prevailing circumstances temperature; Pressure when Pc2 is stable operation after starting; PcMAX, PcMIN are system the highest exhaust operating pressure and minimum exhaust operating pressure; PcMAX, PcMIN and Pc1, Pc2 are without direct relation; Pc 1', Pc 2' is in Δ T time, any two force samples numerical value.
Above to invention has been detailed introduction, for one of ordinary skill in the art, according to the thought of the embodiment of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims (8)

1. an air-conditioning system, it is characterized in that, comprise: the compressor connected successively, cross valve, condenser, restricting element, evaporimeter, gas-liquid separator, the side of described evaporimeter is provided with the first heat exchange blower fan, the side of described condenser is provided with the second heat exchange blower fan, be provided with high pressure sensor and high-voltage switch gear between described compressor and described cross valve, between described compressor and described gas-liquid separator, be provided with low tension switch.
2. a compress control method for air-conditioning system according to claim 1, is characterized in that, comprising:
When air-conditioning system is holding state, high pressure sensor detects the equalizing pressure of described air-conditioning system;
Judge whether described equalizing pressure is less than the first preset pressure, when described equalizing pressure is greater than described first preset pressure, then air-conditioning system initial start.
3. the compress control method of air-conditioning system according to claim 2, is characterized in that, judges whether described equalizing pressure is less than the first preset pressure, when described equalizing pressure is greater than described first preset pressure, then also comprises after air-conditioning system initial start:
When after described air-conditioning system initial start, high pressure sensor detects pressure at expulsion and judges whether described pressure at expulsion is greater than the second preset pressure;
If so, then described air-conditioning system stoppage protection;
If not, then described air-conditioning system is normally run.
4. the compress control method of air-conditioning system according to claim 3, is characterized in that, described air-conditioning system also comprises after normally running:
Described air-conditioning system obtains preset time T 1, T 2corresponding pressure value Pc 1', Pc 2', and according to described pressure value Pc 1', Pc 2' determines whether described air-conditioning system exists malfunction.
5. the compress control method of air-conditioning system according to claim 4, is characterized in that, described air-conditioning system obtains preset time T 1, T 2corresponding pressure value Pc 1', Pc 2', and according to described pressure value Pc 1', Pc 2' determines whether described air-conditioning system exists malfunction and specifically comprise:
Described air-conditioning system obtains preset time T 1, T 2corresponding pressure value Pc 1', Pc 2', judges whether | Pc 1'-Pc 2' |>=preset pressure, if so, then there is fault in described air-conditioning system, and automatically report fault.
6. the compress control method of air-conditioning system according to claim 5, is characterized in that, described air-conditioning system obtains preset time T 1, T 2corresponding pressure value Pc 1', Pc 2', judges whether | Pc 1'-Pc 2' |>=preset pressure, if so, then there is fault in described air-conditioning system, and report fault specifically comprises automatically:
Measure described T continuous three times 1, T 2corresponding pressure value Pc 1', Pc 2', judges whether successively | Pc 1'-Pc 2' |>=preset pressure, if so, then there is fault in described air-conditioning system, and automatically report fault.
7. the compress control method of air-conditioning system according to claim 5, is characterized in that, described air-conditioning system obtains preset time T 1, T 2corresponding pressure value Pc 1', Pc 2', judges whether | Pc 1'-Pc 2' |>=preset pressure, if so, then there is fault in described air-conditioning system, and report fault specifically comprises automatically:
Measure described T in triplicate 1, T 2corresponding pressure value Pc 1', Pc 2', until three times judge | Pc 1'-Pc 2' | be all not less than preset pressure, then there is fault in described air-conditioning system, and automatically report fault.
8. according to the compress control method of the air-conditioning system in claim 5 to 7 described in any one, it is characterized in that, described preset pressure is 0.35Mpa.
CN201510681354.1A 2015-10-19 2015-10-19 Air conditioning system and pressure control method Pending CN105157189A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106016801A (en) * 2016-06-22 2016-10-12 海信容声(广东)冷柜有限公司 Low-temperature oil freezing prevention self-cascade refrigerating system and control method thereof
CN107906814A (en) * 2017-11-06 2018-04-13 广东美的暖通设备有限公司 Starting up's method, starting up's system, readable storage medium storing program for executing and refrigeration plant
CN108870701A (en) * 2018-08-22 2018-11-23 宁波奥克斯电气股份有限公司 A kind of multi-online air-conditioning system and pressure detection method
CN109163414A (en) * 2018-07-23 2019-01-08 青岛海尔空调器有限总公司 Air-conditioning system compress control method and device, storage medium and air-conditioning
CN110749030A (en) * 2019-10-29 2020-02-04 益阳欣达天马电器设备制造有限公司 Detection device and method for high-low voltage switch of air conditioner
CN111550394A (en) * 2020-04-30 2020-08-18 Tcl空调器(中山)有限公司 Control method and device for compressor running frequency and swimming pool machine system
CN111623484A (en) * 2020-05-13 2020-09-04 青岛海尔空调电子有限公司 Air conditioner, control method thereof and computer readable storage medium
CN113154624A (en) * 2021-04-16 2021-07-23 宁波奥克斯电气股份有限公司 Air conditioner compressor starting control method and air conditioner

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CN102080864A (en) * 2009-11-30 2011-06-01 中国移动通信集团江苏有限公司 Method and device for monitoring pressure value of air conditioner in real time
CN103115458A (en) * 2013-02-08 2013-05-22 甘小琴 Full automatic gas recovering and charging device and method
CN104848479A (en) * 2015-04-29 2015-08-19 广东美的制冷设备有限公司 Air conditioner, method and device for refrigerant pipeline pressure monitor and system control thereof

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CN1890516A (en) * 2003-12-10 2007-01-03 开利公司 Diagnosing a loss of refrigerant charge in a refrigerant system
EP1753124A2 (en) * 2005-08-10 2007-02-14 Mitsubishi Heavy Industries, Ltd. Control device for electric compressor
CN102080864A (en) * 2009-11-30 2011-06-01 中国移动通信集团江苏有限公司 Method and device for monitoring pressure value of air conditioner in real time
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106016801A (en) * 2016-06-22 2016-10-12 海信容声(广东)冷柜有限公司 Low-temperature oil freezing prevention self-cascade refrigerating system and control method thereof
CN106016801B (en) * 2016-06-22 2018-11-06 海信容声(广东)冷柜有限公司 A kind of anti-low temperature frozen oil auto-cascading refrigeration system and its control method
CN107906814A (en) * 2017-11-06 2018-04-13 广东美的暖通设备有限公司 Starting up's method, starting up's system, readable storage medium storing program for executing and refrigeration plant
CN109163414A (en) * 2018-07-23 2019-01-08 青岛海尔空调器有限总公司 Air-conditioning system compress control method and device, storage medium and air-conditioning
CN108870701A (en) * 2018-08-22 2018-11-23 宁波奥克斯电气股份有限公司 A kind of multi-online air-conditioning system and pressure detection method
CN110749030A (en) * 2019-10-29 2020-02-04 益阳欣达天马电器设备制造有限公司 Detection device and method for high-low voltage switch of air conditioner
CN111550394A (en) * 2020-04-30 2020-08-18 Tcl空调器(中山)有限公司 Control method and device for compressor running frequency and swimming pool machine system
CN111550394B (en) * 2020-04-30 2022-05-06 Tcl空调器(中山)有限公司 Control method and device for compressor running frequency and swimming pool machine system
CN111623484A (en) * 2020-05-13 2020-09-04 青岛海尔空调电子有限公司 Air conditioner, control method thereof and computer readable storage medium
CN113154624A (en) * 2021-04-16 2021-07-23 宁波奥克斯电气股份有限公司 Air conditioner compressor starting control method and air conditioner
CN113154624B (en) * 2021-04-16 2022-05-06 宁波奥克斯电气股份有限公司 Air conditioner compressor starting control method and air conditioner

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Application publication date: 20151216