CN103424244A - Method for detecting outdoor unit valves of multi-interrelated frequency conversion air-conditioner and multi-interrelated frequency conversion air-conditioner - Google Patents
Method for detecting outdoor unit valves of multi-interrelated frequency conversion air-conditioner and multi-interrelated frequency conversion air-conditioner Download PDFInfo
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- CN103424244A CN103424244A CN2012101615786A CN201210161578A CN103424244A CN 103424244 A CN103424244 A CN 103424244A CN 2012101615786 A CN2012101615786 A CN 2012101615786A CN 201210161578 A CN201210161578 A CN 201210161578A CN 103424244 A CN103424244 A CN 103424244A
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Abstract
The invention discloses a method for detecting outdoor unit valves of a multi-interrelated frequency conversion air-conditioner and the multi-interrelated frequency conversion air-conditioner. The method includes the following steps: S100, controlling the multi-interrelated frequency conversion air-conditioner to operate in an outdoor unit valve detection mode, S200, controlling an outdoor unit to enter a first operating state or second operating state according to the temperature of an external environment where the outdoor unit is located, and detecting operating data, and S300, comparing the detected operating data of the first operating state or second operating state with set judging conditions to judge the states of the high pressure valve and the low pressure valve of an outdoor unit. The multi-interrelated frequency conversion air-conditioner comprises a temperature inductor, a timer, a first pressure gauge, a second pressure gauge and a control unit, and the control unit is used for achieving the method for detecting the outdoor unit valves. According to the method, detection on the outdoor unit valves is conveniently achieved by arranging simple elements.
Description
Technical field
The present invention relates to multi-evaporator inverter air conditioner, particularly relate to a kind of off-premises station valve detection method and multi-evaporator inverter air conditioner that is applicable to multi-evaporator inverter air conditioner.
Background technology
Multi-evaporator inverter air conditioner is the abbreviation of " many variable refrigerant volume central air conditioner is dragged in frequency conversion one ", take cold-producing medium as pumped (conveying) medium, belongs to air-air heat pump system.An off-premises station can be to several indoor set refrigerant conveying liquid (generally being comprised of an off-premises station and 3-16 platform indoor set) by pipeline, by the circulating mass of refrigerant of controlling compressor and the refrigerant flow that enters indoor each heat interchanger, can in time meet indoor cooling and heating load requirement.It is a kind of novel variable-flow central air conditioner technology, has overcome many drawbacks of traditional water system central air conditioner, has obvious advance and distinctive feature, so, once appearance, obtained immediately the extensive approval of world's air-conditioning circle.
At present, in central air conditioner, the intellectuality that is widely used to realize control mode of computing machine; Yet, the detection of the off-premises station valve of central air conditioner (comprising multi-evaporator inverter air conditioner) is not realized to intellectuality, realize that the detection of off-premises station valve needs the time longer.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, the off-premises station valve detection existed for multi-evaporator inverter air conditioner does not realize intelligentized technical matters, and a kind of off-premises station valve detection method and multi-evaporator inverter air conditioner of multi-evaporator inverter air conditioner is provided.
The invention provides a kind of off-premises station valve detection method of multi-evaporator inverter air conditioner, comprise the steps: step S100: the control multi-evaporator inverter air conditioner enters under off-premises station valve detection pattern and moves; Step S200: according to the ambient temperature at off-premises station place, control described off-premises station and enter the first running status or the second running status and detect service data; By the first running status or the service data of the second running status and the Rule of judgment comparison of setting detected, judge the high pressure valve of described off-premises station and the state of low pressure valve.
Preferably, described multi-evaporator inverter air conditioner can the Rapid Establishment high pressure valve and the pressure differential of low pressure valve in described off-premises station valve detection pattern;
The first running status of described off-premises station or the second running status can the Rapid Establishment high pressure valves under different temperatures and the pressure differential of low pressure valve.
The present invention also provides a kind of multi-evaporator inverter air conditioner, comprises off-premises station and Duo Tai indoor set, and the high pressure valve of described off-premises station is connected respectively with described many indoor sets by refrigerant passage with low pressure valve; Described multi-evaporator inverter air conditioner also comprises control module, between described control module and described off-premises station and indoor set, communicates to connect, and for controlling described multi-evaporator inverter air conditioner, enters under off-premises station valve detection pattern and moves; Described control module, also for the ambient temperature according to the off-premises station place, is controlled described off-premises station and is entered the first running status or the second running status and detect service data; Described control module is the first running status or the service data of the second running status and the Rule of judgment comparison of setting for detecting also, judges the high pressure valve of described off-premises station and the state of low pressure valve.
The off-premises station valve detection method of multi-evaporator inverter air conditioner of the present invention, realized the intellectuality of the detection of off-premises station valve, makes the off-premises station valve detection simple, is easy to realize; Simultaneously, realize at short notice the off-premises station valve detection.
Multi-evaporator inverter air conditioner of the present invention, by increasing simple element, realized easily the detection of off-premises station valve and realized at short notice the off-premises station valve detection; Reached robotization, dirigibility and the ease for operation of off-premises station valve detection, fully met the user multi-evaporator inverter air conditioner is controlled to the robotization demand that detects.
The accompanying drawing explanation
In order to make technical scheme of the present invention, the technical matters and the beneficial effect that solve are clearer, below in conjunction with drawings and Examples, off-premises station valve detection method and the multi-evaporator inverter air conditioner of multi-evaporator inverter air conditioner of the present invention are further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The process flow diagram of an embodiment of the off-premises station valve detection method that Fig. 1 is multi-evaporator inverter air conditioner of the present invention.
Embodiment
The off-premises station valve detection method of multi-evaporator inverter air conditioner of the present invention, described multi-evaporator inverter air conditioner comprises off-premises station and Duo Tai indoor set, comprises the steps:
Step S100: the control multi-evaporator inverter air conditioner enters under off-premises station valve detection pattern and moves;
Step S200: according to the ambient temperature at off-premises station place, control described off-premises station and enter the first running status or the second running status and detect service data;
By the first running status or the service data of the second running status and the Rule of judgment comparison of setting detected, judge the high pressure valve of described off-premises station and the state of low pressure valve.
Wherein, the Rule of judgment of setting comprises that off-premises station enters the first Rule of judgment and the second Rule of judgment under the first running status, and off-premises station enters the 3rd Rule of judgment and the 4th Rule of judgment under the second running status.
Preferably, described multi-evaporator inverter air conditioner can the Rapid Establishment high pressure valve and the pressure differential of low pressure valve in described off-premises station valve detection pattern;
The first running status of described off-premises station or the second running status can the Rapid Establishment high pressure valves under different temperatures and the pressure differential of low pressure valve.Difference according to the ambient temperature at off-premises station place, control described off-premises station and enter the first running status or two kinds of different running statuses of the second running status, while making environment temperature externally different, high pressure valve that can the Rapid Establishment off-premises station and the pressure differential of low pressure valve, and then for realizing that at short notice the off-premises station valve detection provides condition.
Preferably, in described step S100, comprise the steps:
Control all indoor set enforced opening refrigerating operatons; Select the purpose of refrigerating operaton to be the pressure differential of high pressure valve and the low pressure valve of Rapid Establishment off-premises station; While heating, the pressure differential of the high pressure valve of off-premises station and low pressure valve is smaller, is difficult for judgement.The high pressure valve of Rapid Establishment off-premises station and the pressure differential of low pressure valve provide condition for realizing at short notice the off-premises station valve detection.
Control the electric expansion valve of all indoor sets and carry out a reset operation, having resetted, (full scale of electric expansion valve is 2000 steps to rear fixedly step number 430～530 steps, when 430～530 step, refrigerant flows than very fast, and the high pressure valve of off-premises station and the pressure differential of low pressure valve ratio are easier to set up);
The wind shelves of controlling all indoor sets are set as high wind shelves;
Control the electric expansion valve that heats of described off-premises station and carry out a reset operation, rear fixedly step number 430～530 steps have resetted;
Control the subcooler electric expansion valve of described off-premises station and carry out a reset operation, rear initial step number 0 step has resetted;
The four-way valve of controlling described off-premises station keeps power down always.
Preferably, in described step S100, comprise the steps:
Control all indoor set enforced opening refrigerating operatons; Select the purpose of refrigerating operaton to be the pressure differential of high pressure valve and the low pressure valve of Rapid Establishment off-premises station; While heating, the pressure differential of the high pressure valve of off-premises station and low pressure valve is smaller, is difficult for judgement.The high pressure valve of Rapid Establishment off-premises station and the pressure differential of low pressure valve provide condition for realizing at short notice the off-premises station valve detection.
Control the electric expansion valve of all indoor sets and carry out a reset operation, having resetted, (full scale of electric expansion valve is 2000 steps to rear fixedly step number 480 steps, when 480 step, refrigerant flows soon, and the high pressure valve of off-premises station and the pressure differential of low pressure valve are easily set up);
The wind shelves of controlling all indoor sets are set as high wind shelves;
Control the electric expansion valve that heats of described off-premises station and carry out a reset operation, rear fixedly step number 480 steps have resetted;
Control the subcooler electric expansion valve of described off-premises station and carry out a reset operation, rear initial step number 0 step has resetted;
The four-way valve of controlling described off-premises station keeps power down always, to prevent that refrigerant from flowing to, changes.
Preferably, described step S200 comprises the steps:
Step S210: whether judge ambient temperature≤0 ℃;
When ambient temperature≤0 ℃, enter step S220; Otherwise, enter step S230;
Step S220: described off-premises station enters the first running status: the blower fan of off-premises station is forced out of service, and the frequency-changeable compressor of off-premises station is forced with 35 hertz of operations (if off-premises station comprises invariable frequency compressor, all invariable frequency compressors are forced out of service); Detect the service data of described off-premises station in the first running status;
Wherein, described service data comprises the working time of the frequency-changeable compressor of described off-premises station, and the pressure differential of the high pressure valve of described off-premises station and low pressure valve;
Step S221: the service data of first running status that will detect and the first Rule of judgment of setting and the second Rule of judgment are relatively;
When first reach the first Rule of judgment the working time of described frequency-changeable compressor, stop described frequency-changeable compressor operation; High pressure valve and the low pressure valve state of judging described off-premises station are normal;
When the pressure differential of the high pressure valve of described off-premises station and low pressure valve first reaches the second Rule of judgment, stop described frequency-changeable compressor operation; Judge high pressure valve and the low pressure valve abnormal state of described off-premises station;
Wherein, described the first Rule of judgment is: frequency-changeable compressor continuous operating time accumulative total 135 seconds; Described the second Rule of judgment is: [high pressure valve high pressure P d]-[low pressure valve low pressure Ps] >=15 ℃;
Step S230: described off-premises station enters the second running status: the blower fan of described off-premises station is forced with 20 hertz of operations, the frequency-changeable compressor of off-premises station is forced with 30 hertz of operations (if off-premises station comprises invariable frequency compressor, all invariable frequency compressors are forced out of service); Detect the service data of off-premises station in the second running status;
Wherein, described service data comprises the working time of the frequency-changeable compressor of described multi-evaporator inverter air conditioner, and the pressure differential of the high pressure valve of described off-premises station and low pressure valve;
Step S231: the 3rd Rule of judgment of the service data of second running status that will detect and setting and the 4th Rule of judgment are relatively;
When first reach the 3rd Rule of judgment the working time of described frequency-changeable compressor, stop the fan operation of frequency-changeable compressor and off-premises station; High pressure valve and the low pressure valve state of judging described off-premises station are normal;
When the pressure differential of the high pressure valve of described off-premises station and low pressure valve first reaches the 4th Rule of judgment, stop the fan operation of frequency-changeable compressor and off-premises station; Judge high pressure valve and the low pressure valve abnormal state of described off-premises station;
Wherein, described the 3rd Rule of judgment is: frequency-changeable compressor continuous operating time accumulative total 135 seconds; Described the 4th Rule of judgment is: [high pressure valve high pressure P d]-[low pressure valve low pressure Ps] >=20 ℃.
Difference according to the ambient temperature at off-premises station place, control described off-premises station and enter the first running status or two kinds of different running statuses of the second running status, while making environment temperature externally different, high pressure valve that can the Rapid Establishment off-premises station and the pressure differential of low pressure valve, and then for realizing that at short notice the off-premises station valve detection provides condition.
Preferably, after described step S200, also comprise the steps:
When the high pressure valve of described off-premises station and low pressure valve state, when normal, described multi-evaporator inverter air conditioner reverts to holding state;
When the high pressure valve of described off-premises station and low pressure valve abnormal state, prompting checks whether high pressure valve and the low pressure valve of off-premises station are opened; After unlatching, return to operating procedure S100～S200.
Off-premises station valve detection method of the present invention, realized the detection of off-premises station valve simply; Reached robotization, dirigibility and the ease for operation of off-premises station valve detection, fully met the user air-conditioning is controlled to the robotization demand that detects.
As shown in Figure 1, the operational scheme of an embodiment of the off-premises station valve detection method that is applicable to multi-evaporator inverter air conditioner of the present invention is as follows:
Step 1: multi-evaporator inverter air conditioner start;
Step 2: the control multi-evaporator inverter air conditioner enters under off-premises station valve detection pattern and moves:
Control all indoor set enforced opening refrigerating operatons and (for the high pressure valve of Rapid Establishment off-premises station and the pressure differential of low pressure valve, select refrigerating operaton; While heating, the pressure differential of the high pressure valve of off-premises station and low pressure valve is smaller, is difficult for judgement); Control the electric expansion valve of all indoor sets and carry out a reset operation, having resetted, (full scale of electric expansion valve is 2000 steps to rear fixedly step number 480 steps, when 480 step, refrigerant flows soon, and the high pressure valve of off-premises station and the pressure differential of low pressure valve are easily set up); The wind shelves of controlling all indoor sets are set as high wind shelves;
Control the electric expansion valve that heats of off-premises station and carry out a reset operation, rear fixedly step number 480 steps have resetted; Control the subcooler electric expansion valve of off-premises station and carry out a reset operation, rear initial step number 0 step has resetted; The four-way valve of controlling off-premises station keeps power down always, to prevent that refrigerant from flowing to, changes.
Step 3: whether≤0 ℃ of the ambient temperature that judges the off-premises station place;
When the ambient temperature at off-premises station place≤0 ℃, off-premises station enters the first running status: the blower fan of off-premises station is forced out of service, the frequency-changeable compressor of off-premises station is forced with 35 hertz of operations (if off-premises station comprises invariable frequency compressor, all invariable frequency compressors are forced out of service); Detect the service data of off-premises station in the first running status; Wherein, described service data comprises the working time of frequency-changeable compressor, and the pressure differential of the high pressure valve of off-premises station and low pressure valve;
By the first Rule of judgment of the service data of the first running status of detecting and setting and the second Rule of judgment relatively;
While first reaching the first Rule of judgment, stop the frequency-changeable compressor operation working time of the frequency-changeable compressor in service data; High pressure valve and the low pressure valve state of judging off-premises station are normal;
When the high pressure valve of the off-premises station in service data and the pressure differential of low pressure valve first reach the second Rule of judgment, stop the frequency-changeable compressor operation; Judge high pressure valve and the low pressure valve abnormal state of off-premises station;
Wherein, the first Rule of judgment is: frequency-changeable compressor continuous operating time accumulative total 135 seconds; The second Rule of judgment is: [high pressure valve high pressure P d]-[low pressure valve low pressure Ps] >=15 ℃.
When the ambient temperature at off-premises station place>0 ℃, off-premises station enters the second running status: the blower fan of off-premises station is forced with 20 hertz of operations, the frequency-changeable compressor of off-premises station is forced with 30 hertz of operations (if off-premises station comprises invariable frequency compressor, all invariable frequency compressors are forced out of service); Detect the service data of off-premises station in the second running status;
By the 3rd Rule of judgment of the service data of the second running status of detecting and setting and the 4th Rule of judgment relatively;
While first reaching the 3rd Rule of judgment, stop frequency-changeable compressor and off-premises station fan operation the working time of the frequency-changeable compressor in service data; High pressure valve and the low pressure valve state of judgement off-premises station are normal; The off-premises station valve detection completes; Described multi-evaporator inverter air conditioner reverts to holding state;
When the high pressure valve of the off-premises station in service data and the pressure differential of low pressure valve first reach the 4th Rule of judgment, stop frequency-changeable compressor and off-premises station fan operation, high pressure valve and the low pressure valve abnormal state of judgement off-premises station; Prompting checks whether high pressure valve and the low pressure valve of off-premises station are opened; After unlatching, operating procedure 2;
Wherein, the 3rd Rule of judgment is: frequency-changeable compressor continuous operating time accumulative total 135 seconds; The 4th Rule of judgment is: [high pressure valve high pressure P d]-[low pressure valve low pressure Ps] >=20 ℃.
A kind of multi-evaporator inverter air conditioner of the present invention, comprise off-premises station and Duo Tai indoor set, and the high pressure valve of off-premises station is connected respectively with many indoor sets by refrigerant passage with low pressure valve;
Described multi-evaporator inverter air conditioner also comprises control module, between described control module and described off-premises station and indoor set, communicates to connect, and for controlling described multi-evaporator inverter air conditioner, enters under off-premises station valve detection pattern and moves;
Described control module, also for the ambient temperature according to the off-premises station place, is controlled described off-premises station and is entered the first running status or the second running status and detect service data;
Described control module is the first running status or the service data of the second running status and the Rule of judgment comparison of setting for detecting also, judges the high pressure valve of described off-premises station and the state of low pressure valve.
Preferably, described multi-evaporator inverter air conditioner also comprises temperature inductor, timer, the first pressure device and the second pressure device; Described temperature inductor is for detection of the ambient temperature at described off-premises station place and detected ambient temperature is transferred to described control module; Described timer for measure described off-premises station frequency-changeable compressor working time and will be transferred to described control module measure working time; Described the first pressure device is for the high pressure valve pressure that measures off-premises station and give described control module by the high pressure valve pressure transmission of measured off-premises station; Described the second pressure device is for the low pressure valve pressure that measures off-premises station and give described control module by the low pressure valve pressure transmission of measured off-premises station.
Preferably, at multi-evaporator inverter air conditioner, enter under off-premises station valve detection pattern, by described control module, controlled: described control module, also for the ambient temperature according to the off-premises station place, is controlled described off-premises station and is entered the first running status or the second running status and detect service data;
Described control module is the first running status or the service data of the second running status and the Rule of judgment comparison of setting for detecting also, judges the high pressure valve of described off-premises station and the state of low pressure valve.
Preferably, described control module control multi-evaporator inverter air conditioner enters under off-premises station valve detection pattern:
All indoor set enforced opening refrigerating operatons;
The electric expansion valve of all indoor sets is carried out a reset operation, and rear fixedly step number 480 steps have resetted;
The wind shelves of all indoor sets are set as high wind shelves;
The electric expansion valve that heats of described off-premises station is carried out a reset operation, and rear fixedly step number 480 steps have resetted;
The subcooler electric expansion valve of described off-premises station is carried out a reset operation, and rear initial step number 0 step has resetted;
The four-way valve of described off-premises station keeps power down always.
Preferably, described control module, according to the ambient temperature at off-premises station place, is controlled described off-premises station and is entered the first running status or the second running status and detect service data as follows:
When ambient temperature≤0 ℃; Described control module is controlled described off-premises station and entered the first running status: the blower fan of off-premises station is forced out of service, and the frequency-changeable compressor of off-premises station is forced with 35 hertz of operations; Detect the service data of described off-premises station in the first running status;
When ambient temperature>0 ℃; Described control module is controlled described off-premises station and entered the second running status: the blower fan of described off-premises station is forced with 20 hertz of operations, and the frequency-changeable compressor of off-premises station is forced with 30 hertz of operations; Detect the service data of off-premises station in the second running status;
Wherein, described service data comprises the working time of the frequency-changeable compressor of described multi-evaporator inverter air conditioner, and the pressure differential of the high pressure valve of described off-premises station and low pressure valve.
Preferably, relatively, the state of judging the high pressure valve of described off-premises station and low pressure valve is as follows for the Rule of judgment of the first running status that described control module will detect or the service data of the second running status and setting:
The service data of the first running status that described control module will detect and the first Rule of judgment of setting and the second Rule of judgment are relatively;
When first reach the first Rule of judgment the working time of described frequency-changeable compressor, stop described frequency-changeable compressor operation; To judge high pressure valve and the low pressure valve state of described off-premises station normal for described control module;
When the pressure differential of the high pressure valve of described off-premises station and low pressure valve first reaches the second Rule of judgment, stop described frequency-changeable compressor operation; Described control module is judged high pressure valve and the low pressure valve abnormal state of described off-premises station;
Wherein, described the first Rule of judgment is: frequency-changeable compressor continuous operating time accumulative total 135 seconds; Described the second Rule of judgment is: [high pressure valve high pressure P d]-[low pressure valve low pressure Ps] >=15 ℃;
The 3rd Rule of judgment of the service data of the second running status that described control module will detect and setting and the 4th Rule of judgment are relatively;
When first reach the 3rd Rule of judgment the working time of described frequency-changeable compressor, stop the fan operation of frequency-changeable compressor and off-premises station; To judge high pressure valve and the low pressure valve state of described off-premises station normal for described control module;
When the pressure differential of the high pressure valve of described off-premises station and low pressure valve first reaches the 4th Rule of judgment, stop the fan operation of frequency-changeable compressor and off-premises station; Described control module is judged high pressure valve and the low pressure valve abnormal state of described off-premises station;
Wherein, described the 3rd Rule of judgment is: frequency-changeable compressor continuous operating time accumulative total 135 seconds; Described the 4th Rule of judgment is: [high pressure valve high pressure P d]-[low pressure valve low pressure Ps] >=20 ℃.
Preferably, described control module is computing machine or single-chip microcomputer or embedded dsp.
Multi-evaporator inverter air conditioner of the present invention, by increasing simple element, realized the detection of off-premises station valve easily; Reached robotization, dirigibility and the ease for operation of off-premises station valve detection, fully met the user air-conditioning is controlled to the robotization demand that detects.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (12)
1. the off-premises station valve detection method of a multi-evaporator inverter air conditioner, described multi-evaporator inverter air conditioner comprises off-premises station, it is characterized in that, comprises the steps:
Step S100: the control multi-evaporator inverter air conditioner enters under off-premises station valve detection pattern and moves;
Step S200: according to the ambient temperature at described off-premises station place, control described off-premises station and enter the first running status or the second running status and detect service data;
By the first running status or the service data of the second running status and the Rule of judgment comparison of setting detected, judge the high pressure valve of described off-premises station and the state of low pressure valve.
2. off-premises station valve detection method according to claim 1 is characterized in that:
Described multi-evaporator inverter air conditioner can be set up the pressure differential of high pressure valve and low pressure valve in described off-premises station valve detection pattern;
The first running status or second running status of described off-premises station can be set up the pressure differential of high pressure valve and low pressure valve under different temperatures.
3. off-premises station valve detection method according to claim 1 is characterized in that:
Described multi-evaporator inverter air conditioner also comprises many indoor sets; In described step S100, comprise the steps:
Control all indoor set enforced opening refrigerating operatons;
Control the electric expansion valve of all indoor sets and carry out a reset operation, rear fixedly step number 430～530 steps have resetted;
The wind shelves of controlling all indoor sets are set as high wind shelves;
Control the electric expansion valve that heats of described off-premises station and carry out a reset operation, rear fixedly step number 430～530 steps have resetted;
Control the subcooler electric expansion valve of described off-premises station and carry out a reset operation, rear initial step number 0 step has resetted;
The four-way valve of controlling described off-premises station keeps power down always.
4. off-premises station valve detection method according to claim 1 is characterized in that:
Described multi-evaporator inverter air conditioner also comprises many indoor sets; In described step S100, comprise the steps:
Control all indoor set enforced opening refrigerating operatons;
Control the electric expansion valve of all indoor sets and carry out a reset operation, rear fixedly step number 480 steps have resetted;
The wind shelves of controlling all indoor sets are set as high wind shelves;
Control the electric expansion valve that heats of described off-premises station and carry out a reset operation, rear fixedly step number 480 steps have resetted;
Control the subcooler electric expansion valve of described off-premises station and carry out a reset operation, rear initial step number 0 step has resetted;
The four-way valve of controlling described off-premises station keeps power down always.
5. according to the described off-premises station valve detection of claim 3 or 4 method, it is characterized in that:
Described step S200 comprises the steps:
Step S210: whether judge ambient temperature≤0 ℃; When ambient temperature≤0 ℃, enter step S220; Otherwise, enter step S230;
Step S220: described off-premises station enters the first running status: the blower fan of off-premises station is forced out of service, and the frequency-changeable compressor of off-premises station is forced with 35 hertz of operations; Detect the service data of described off-premises station in the first running status;
Wherein, described service data comprises the working time of the frequency-changeable compressor of described off-premises station, and the pressure differential of the high pressure valve of described off-premises station and low pressure valve;
Step S221: the service data of first running status that will detect and the first Rule of judgment of setting and the second Rule of judgment are relatively;
When first reach the first Rule of judgment the working time of described frequency-changeable compressor, stop described frequency-changeable compressor operation; High pressure valve and the low pressure valve state of judging described off-premises station are normal;
When the pressure differential of the high pressure valve of described off-premises station and low pressure valve first reaches the second Rule of judgment, stop described frequency-changeable compressor operation; Judge high pressure valve and the low pressure valve abnormal state of described off-premises station, finish to return;
Wherein, described the first Rule of judgment is: frequency-changeable compressor continuous operating time accumulative total 135 seconds; Described the second Rule of judgment is: [high pressure valve high pressure P d]-[low pressure valve low pressure Ps] >=15 ℃;
Step S230: described off-premises station enters the second running status: the blower fan of described off-premises station is forced with 20 hertz of operations, and the frequency-changeable compressor of off-premises station is forced with 30 hertz of operations; Detect the service data of off-premises station in the second running status;
Wherein, described service data comprises the working time of the frequency-changeable compressor of described multi-evaporator inverter air conditioner, and the pressure differential of the high pressure valve of described off-premises station and low pressure valve;
Step S231: the 3rd Rule of judgment of the service data of second running status that will detect and setting and the 4th Rule of judgment are relatively;
When first reach the 3rd Rule of judgment the working time of described frequency-changeable compressor, stop the fan operation of frequency-changeable compressor and off-premises station; High pressure valve and the low pressure valve state of judging described off-premises station are normal;
When the pressure differential of the high pressure valve of described off-premises station and low pressure valve first reaches the 4th Rule of judgment, stop the fan operation of frequency-changeable compressor and off-premises station; Judge high pressure valve and the low pressure valve abnormal state of described off-premises station, finish to return;
Wherein, described the 3rd Rule of judgment is: frequency-changeable compressor continuous operating time accumulative total 135 seconds; Described the 4th Rule of judgment is: [high pressure valve high pressure P d]-[low pressure valve low pressure Ps] >=20 ℃.
6. off-premises station valve detection method according to claim 5 is characterized in that:
After described step S200, also comprise the steps:
When the high pressure valve of described off-premises station and low pressure valve state, when normal, described multi-evaporator inverter air conditioner reverts to holding state;
When the high pressure valve of described off-premises station and low pressure valve abnormal state, prompting checks whether high pressure valve and the low pressure valve of off-premises station are opened; After unlatching, return to operating procedure S100～S200.
7. a multi-evaporator inverter air conditioner, comprise off-premises station and Duo Tai indoor set, and the high pressure valve of described off-premises station is connected respectively with described many indoor sets by refrigerant passage with low pressure valve, it is characterized in that:
Also comprise control module, communicate to connect between described control module and described off-premises station and indoor set, for controlling described multi-evaporator inverter air conditioner, enter under off-premises station valve detection pattern and move;
Described control module, also for the ambient temperature according to the off-premises station place, is controlled described off-premises station and is entered the first running status or the second running status and detect service data;
Described control module is the first running status or the service data of the second running status and the Rule of judgment comparison of setting for detecting also, judges the high pressure valve of described off-premises station and the state of low pressure valve.
8. want 7 described multi-evaporator inverter air conditioners according to right, it is characterized in that:
Described multi-evaporator inverter air conditioner also comprises temperature inductor, timer, the first pressure device and the second pressure device; Described temperature inductor is for detection of the ambient temperature at described off-premises station place and detected ambient temperature is transferred to described control module; Described timer for measure described off-premises station frequency-changeable compressor working time and will be transferred to described control module measure working time; Described the first pressure device is for the high pressure valve pressure that measures off-premises station and give described control module by the high pressure valve pressure transmission of measured off-premises station; Described the second pressure device is for the low pressure valve pressure that measures off-premises station and give described control module by the low pressure valve pressure transmission of measured off-premises station.
9. want 8 described multi-evaporator inverter air conditioners according to right, it is characterized in that:
Enter under off-premises station valve detection pattern at multi-evaporator inverter air conditioner, controlled by described control module:
All indoor set enforced opening refrigerating operatons;
The electric expansion valve of all indoor sets is carried out a reset operation, and rear fixedly step number 480 steps have resetted;
The wind shelves of all indoor sets are set as high wind shelves;
The electric expansion valve that heats of described off-premises station is carried out a reset operation, and rear fixedly step number 480 steps have resetted;
The subcooler electric expansion valve of described off-premises station is carried out a reset operation, and rear initial step number 0 step has resetted;
The four-way valve of described off-premises station keeps power down always.
10. want 9 described multi-evaporator inverter air conditioners according to right, it is characterized in that:
Described control module, according to the ambient temperature at off-premises station place, is controlled described off-premises station and is entered the first running status or the second running status and detect service data as follows:
When ambient temperature≤0 ℃; Described control module is controlled described off-premises station and entered the first running status: the blower fan of off-premises station is forced out of service, and the frequency-changeable compressor of off-premises station is forced with 35 hertz of operations; Detect the service data of described off-premises station in the first running status;
When ambient temperature>0 ℃; Described control module is controlled described off-premises station and entered the second running status: the blower fan of described off-premises station is forced with 20 hertz of operations, and the frequency-changeable compressor of off-premises station is forced with 30 hertz of operations; Detect the service data of off-premises station in the second running status;
Wherein, described service data comprises the working time of the frequency-changeable compressor of described multi-evaporator inverter air conditioner, and the pressure differential of the high pressure valve of described off-premises station and low pressure valve.
11. want 10 described multi-evaporator inverter air conditioners according to right, it is characterized in that:
Relatively, the state of judging the high pressure valve of described off-premises station and low pressure valve is as follows for the Rule of judgment of the first running status that described control module will detect or the service data of the second running status and setting:
The service data of the first running status that described control module will detect and the first Rule of judgment of setting and the second Rule of judgment are relatively;
When first reach the first Rule of judgment the working time of described frequency-changeable compressor, stop described frequency-changeable compressor operation; To judge high pressure valve and the low pressure valve state of described off-premises station normal for described control module;
When the pressure differential of the high pressure valve of described off-premises station and low pressure valve first reaches the second Rule of judgment, stop described frequency-changeable compressor operation; Described control module is judged high pressure valve and the low pressure valve abnormal state of described off-premises station, finishes to return;
Wherein, described the first Rule of judgment is: frequency-changeable compressor continuous operating time accumulative total 135 seconds; Described the second Rule of judgment is: [high pressure valve high pressure P d]-[low pressure valve low pressure Ps] >=15 ℃;
The 3rd Rule of judgment of the service data of the second running status that described control module will detect and setting and the 4th Rule of judgment are relatively;
When first reach the 3rd Rule of judgment the working time of described frequency-changeable compressor, stop the fan operation of frequency-changeable compressor and off-premises station; To judge high pressure valve and the low pressure valve state of described off-premises station normal for described control module;
When the pressure differential of the high pressure valve of described off-premises station and low pressure valve first reaches the 4th Rule of judgment, stop the fan operation of frequency-changeable compressor and off-premises station; Described control module is judged high pressure valve and the low pressure valve abnormal state of described off-premises station, finishes to return;
Wherein, described the 3rd Rule of judgment is: frequency-changeable compressor continuous operating time accumulative total 135 seconds; Described the 4th Rule of judgment is: [high pressure valve high pressure P d]-[low pressure valve low pressure Ps] >=20 ℃.
12. multi-evaporator inverter air conditioner according to claim 7 is characterized in that:
Described control module is computing machine or single-chip microcomputer or embedded dsp.
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| CN201210161578.6A CN103424244B (en) | 2012-05-22 | 2012-05-22 | The off-premises station valve detection method of multi-evaporator inverter air conditioner and multi-evaporator inverter air conditioner |
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| CN201210161578.6A CN103424244B (en) | 2012-05-22 | 2012-05-22 | The off-premises station valve detection method of multi-evaporator inverter air conditioner and multi-evaporator inverter air conditioner |
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| CN103424244B (en) | 2016-03-09 |
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