CN106642777B - Duplex cylinder compressor air conditioner and its refrigerating method - Google Patents
Duplex cylinder compressor air conditioner and its refrigerating method Download PDFInfo
- Publication number
- CN106642777B CN106642777B CN201710053795.6A CN201710053795A CN106642777B CN 106642777 B CN106642777 B CN 106642777B CN 201710053795 A CN201710053795 A CN 201710053795A CN 106642777 B CN106642777 B CN 106642777B
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- Prior art keywords
- air conditioner
- duplex cylinder
- compressor
- cylinder compressor
- system pressure
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/02—Compression machines, plants or systems with non-reversible cycle with compressor of reciprocating-piston type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
- F25B2400/074—Details of compressors or related parts with multiple cylinders
Abstract
The present invention relates to duplex cylinder compressor air conditioner refrigeration technology field, a kind of duplex cylinder compressor air conditioner and its refrigerating method are provided.The air conditioner includes duplex cylinder compressor, switch unit, the temperature detecting unit for detecting outdoor environment temperature and the pressure sensing cell for detection system pressure, and switch unit switches between twin-tub operational mode and single cylinder operational mode for controlling duplex cylinder compressor according to system pressure detected by outdoor environment temperature detected by temperature detecting unit and pressure sensing cell.In refrigeration; according to the state of outdoor environment temperature; enable compressor with single cylinder mode or twin-tub mode elder generation trial operation; the operational mode of compressor is further further adjusted by system pressure again; there is the probability that protection is shut down so as to which air conditioner is greatly reduced; and system pressure can also be reduced in operation, reduce system loading.
Description
Technical field
The present invention relates to air-conditioning high-temperature refrigeration technical field, more particularly to a kind of duplex cylinder compressor air conditioner and its
Refrigerating method.
Background technique
Current twin-tub variable capacity air conditioner generally uses single cylinder mode operation when environment temperature is lower, and in temperature
Use twin-tub mode operation to increase system loading when slightly higher；But when outside temperature is extra high, under twin-tub mode
Air conditioner will appear the excessively high protection of system pressure, need traditional twin-tub mode being converted to single cylinder mode at this moment, with
Uninstalling system pressure reduces system loading.
Summary of the invention
The object of the present invention is to provide a kind of air conditioners that can reduce the probability that protection is shut down occurs, and can also run
Middle reduction system pressure reduces the duplex cylinder compressor air conditioner and its refrigerating method of system loading.
To achieve the above object, the present invention provides a kind of duplex cylinder compressor air conditioner, which includes twin-tub compression
Machine, switch unit, the temperature detecting unit for detecting outdoor environment temperature and the pressure detecting list for detection system pressure
Member；The switch unit is used for the outdoor environment temperature according to detected by the temperature detecting unit and the pressure detecting list
System pressure detected by member switches to control the duplex cylinder compressor between twin-tub operational mode and single cylinder operational mode.
The present invention also provides a kind of refrigerating methods of duplex cylinder compressor air conditioner, method includes the following steps:
S1, the operation of air conditioner refrigeration mode, execute step S2；
S2, judge whether outdoor environment temperature T is greater than set temperature threshold value Ts, if so then execute step S3, if otherwise holding
Row step S4；
S3, compressor are with single cylinder mode operation, the first setting duration t1Step S5 is executed afterwards；
S4, compressor are with twin-tub mode operation, the second setting duration t2Step S8 is executed afterwards；
S5, judge system pressure PdWhether the first setup pressure value P is greater thans1, if so then execute step S6, if otherwise executing
Step S7；
S6, compressor shutdown third set duration t3Step S1 is executed afterwards；
S7, judge system pressure PdWhether the second setup pressure value P is greater thans2, if so then execute step S3, if otherwise executing
Step S4；
S8, judge system pressure PdWhether the first preset pressure value P is greater thans1, if so then execute step S3, if otherwise executing
Step S4；
Wherein, the first setup pressure value Ps1Greater than the second setup pressure value Ps2。
Preferably, the set temperature threshold value TsIt is 30-70 DEG C.
Preferably, the set temperature threshold value TsIt is 50 DEG C.
Preferably, the first setting duration t1It is 0-5 minutes.
Preferably, the first setting duration t1It is 1 minute.
Preferably, the second setting duration t2It is 0-5 minutes.
Preferably, the second setting duration t2It is 1 minute.
Preferably, the third sets duration t3It is 0-5 minutes.
Preferably, the third sets duration t3It is 3 minutes.
A kind of duplex cylinder compressor air conditioner and its refrigerating method provided by the invention, according to the state of outdoor environment temperature,
It enables compressor with single cylinder mode or twin-tub mode elder generation trial operation, compressor is further further adjusted by system pressure again
There is the probability that protection is shut down so as to which air conditioner is greatly reduced, and can also reduce system pressure in operation in operational mode,
Reduce system loading.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of duplex cylinder compressor air conditioner of the embodiment of the present invention；
Fig. 2 is a kind of schematic diagram of the refrigerating method of duplex cylinder compressor air conditioner of the embodiment of the present invention.
Appended drawing reference:
1, duplex cylinder compressor；2, four-way valve；3, condenser；4, throttle part；5, evaporator；6, switch；7, controller；
8, temperature detecting unit；9, pressure sensing cell.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " connection " should be done
It broadly understood, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be directly connected,
It can also be indirectly connected through an intermediary.For the ordinary skill in the art, can be understood with concrete condition above-mentioned
The concrete meaning of term in the present invention.
As shown in Figure 1,11 air conditioner of a kind of duplex cylinder compressor provided in an embodiment of the present invention, including by compressor, four-way
The changes in temperature double mode air-conditioning system of the compositions such as valve 22, condenser 33, throttle part 44 and evaporator 55.Specifically, condenser
33, throttle part 44 and evaporator 55 are sequentially connected in series in coolant path, the arrival end of compressor and outlet end respectively with four-way
Two orifices of valve 22, and the both ends of the coolant path respectively with other two orifice of four-way valve 22, wherein
Four-way valve 22 is for switching over coolant path and compressor between positive on-state and reversed on-state, to divide
Not Shi Xian air-conditioning system refrigeration mode and heating mode.
Wherein, the compressor of the embodiment of the present invention is duplex cylinder compressor 11, and there are two pressures in parallel for the tool of duplex cylinder compressor 11
Contracting cylinder, two compression cylinders respectively have individual gas returning port and share a gas outlet；11 property of can choose of duplex cylinder compressor with
Refrigerating efficiency can be improved in single cylinder mode and twin-tub mode operation, under suitable condition, starting twin-tub mode operation.
In addition, the embodiment of the invention also includes switch units, the temperature detecting unit 88 for detecting outdoor environment temperature
With the pressure sensing cell 99 for detection system pressure, switch unit specifically may include switch 66 and controller 77, twin-tub
Two gas returning ports of compressor 11 are connected to by switch 66 with the corresponding interface of four-way valve 22；Controller 77 respectively with twin-tub pressure
Contracting machine 11 is connected with 66 signal of switch, for control duplex cylinder compressor 11 with single cylinder mode operation or twin-tub mode operation, simultaneously
And the on-off of two gas returning ports of corresponding control duplex cylinder compressor 11.
Temperature detecting unit 88 and current detecting unit 9 are connect with controller 77 respectively, and switch unit is used for according to temperature
System pressure detected by outdoor environment temperature detected by detection unit 88 and pressure sensing cell 99 controls twin-tub
Compressor 11 switches between twin-tub operational mode and single cylinder operational mode.
In refrigeration, outdoor environment temperature is to determine duplex cylinder compressor 11 with single cylinder mode operation or with twin-tub mode fortune
A capable essential condition, because outdoor condenser 33 needs to radiate, and the outdoor environment of lower temperature is lucky in refrigeration
Be conducive to the heat dissipation of condenser 33, so, the considerations of comprehensive refrigerating efficiency and energy consumption, only duplex cylinder compressor 11 need to be made with list at this time
Cylinder mode operation, it can good refrigerating efficiency is obtained with lower energy consumption；And when outdoor environment temperature is higher, condenser
33 radiating efficiency reduces, and is at this time guarantee refrigerating efficiency, it is necessary to compressor start twin-tub mode operation, at this point, compressor
Twin-tub mode operation will increase energy consumption, i.e. the back pressure of system can increase, but still within the range of permission；But when outdoor ring
Border when the temperature is excessively high, if duplex cylinder compressor 11 can make system pressure excessively high, air conditioner can go out still with twin-tub mode operation
Existing complete machine hypertonia protection, so can only sacrifice refrigerating efficiency at this time, is converted to single cylinder mode for twin-tub mode, is to reduce
System pressure, reduces system loading.
From the foregoing, it will be observed that be not only based on outdoor environment temperature when determining the operational mode of duplex cylinder compressor 11, also to examine
The system pressure conditions of air conditioner are considered, further to control the operating status of compressor.
As shown in Fig. 2, the embodiment of the invention also provides a kind of refrigerating method of duplex cylinder compressor air conditioner, this method packet
Include following steps:
S1, the operation of air conditioner refrigeration mode, execute step S2；
S2, judge whether outdoor environment temperature T is greater than set temperature threshold value Ts, if so then execute step S3, if otherwise holding
Row step S4；
Wherein, outdoor environment temperature can be obtained by above-mentioned temperature detecting unit, and set temperature threshold value TSIt can be 30-70
DEG C, preferably 50 DEG C, can be used as judge outdoor temperature whether be high state a threshold value；It is greater than in outdoor environment temperature and sets
Determine temperature threshold TSUnder conditions of, i.e., when outdoor temperature is in excessively high state, if compressor is at this time with twin-tub mode operation,
It then can directly cause system pressure excessively high, cause air conditioner the phenomenon that protection is shut down occur, therefore compressor should execute step
S3, with single cylinder mode operation；And it is not more than set temperature threshold value T in outdoor environment temperatureSUnder conditions of, i.e., outdoor temperature is not
When in excessively high state, therefore with twin-tub mode operation can't to directly result in system pressure excessively high for compressor, therefore can hold
Row step S4, enables compressor with single cylinder mode operation.
S3, compressor are with single cylinder mode operation, the first setting duration t1Step S5 is executed afterwards；
Specifically, abovementioned steps are greater than set temperature threshold value T in outdoor environment temperature TSUnder conditions of, to avoid system pressure
Power is excessive, and compressor is not meant to that compressor just can absolutely guarantee system pressure with single cylinder mode with single cylinder mode operation
Power is not in excessively high state, thus also need further verify compressor back pressure whether be it is excessively high, i.e., execution step
S5；Second preset duration t2It can be 0~5 minute, preferably 1 minute, because at the beginning of the operation of compressor start single cylinder, system
Pressure value is simultaneously unstable, to avoid the step S5 for making subsequent progress from forming erroneous judgement, preferably runs one section in compressor start twin-tub
After time, then the judgement of pressure in step S5 is carried out, to obtain more accurate judging result.
S4, compressor are with twin-tub mode operation, the second setting duration t2Step S8 is executed afterwards；
Although specifically, outdoor environment temperature be not it is excessively high make, compressor can't be in short-term with twin-tub mode operation
In directly result in that system pressure is excessive, but compressor with the time of twin-tub mode operation it is longer after, then it is possible that system
The case where hypertonia, therefore after system pressure is stablized, it is also necessary to compressor is verified further with twin-tub mode by step S8
It is excessively high whether to will lead to system pressure after when operation；Second preset duration t therein2It can be 0~5 minute, preferably 1 point
Clock, because system pressure value is simultaneously unstable at the beginning of the operation of compressor start twin-tub, to avoid causing in step s 8 judging by accident,
It is preferred that after compressor start twin-tub runs a period of time, then the judgement of pressure in step S8 is carried out, more accurately sentenced with obtaining
Disconnected result.
S5, judge system pressure PdWhether the first setup pressure value P is greater thans1, if so then execute step S6, if otherwise executing
Step S7；
Specifically, the first setup pressure value Ps1It is for determining whether the operating pressure of air conditioner is an excessively high threshold
Value；Preceding step is greater than set temperature threshold value T in outdoor environment temperatureSUnder conditions of, to avoid system pressure excessive, compressor with
Single cylinder operational mode starting operation, and if compressor single cylinder operation under conditions of, still make system pressure be greater than first setting
Pressure value Ps1, then illustrate that the state of air conditioner at this time is not suitable for running under this high ambient conditions, step S6 should be executed, adopted
Take temporary stoppage protection measure；And if compressor can't make system pressure be more than the first setting pressure with single cylinder mode operation
Value Ps1, then illustrate that the state of air conditioner at this time can be run under this high ambient conditions, Ying Zhihang step S7.
S6, compressor shutdown third set duration t3Step S1 is executed afterwards；
Specifically, compressor shutdown, after cooling after a period of time, then booting operation in a chiller mode, three setting
Duration t3Can be is 0-5 minutes, preferably 3 minutes.
S7, judge system pressure PdWhether the second setup pressure value P is greater thans2, if so then execute step S3, if otherwise executing
Step S4, wherein the first setup pressure value Ps1Greater than the second setup pressure value Ps2；
Specifically, during system recycles between step S3, S5 and S7, since compressor is single cylinder mode fortune always
Row, i.e., system loading is smaller, therefore system pressure can gradually decrease, and when system pressure is down to the second setup pressure value Ps2Below
When, compressor can be switched to twin-tub mode operation by the compressor actually condition of load twin-tub mode operation at this time,
Refrigerating efficiency not only can be improved in this way, but also complete machine electric current will not be made excessively high, and since compressor is by single cylinder pattern switching to twin-tub
Mode is related to the jump of electric current, therefore should execute step S4, and due to the first setup pressure value Ps1Greater than the second setup pressure value
Ps2, so, the setting P appropriate according to the type of air conditioners1And Ps2Value, can to avoid high frequent carry out mono-/bis-cylinder
The switching of mode；And the second setup pressure value P is down in system pressures2Before below, compressor is also to maintain single cylinder mode fortune
Row, i.e. execution step S3.
S8, judge system pressure PdWhether the first preset pressure value P is greater thans1, if so then execute step S3, if otherwise executing
Step S4；
After system is switched to twin-tub mode operation, system pressure can be gradually risen, but as long as not higher than the first default pressure
Force value Ps1, air conditioner can still keep twin-tub mode operation, i.e. execution step S4；But if monitoring that system pressure is higher than first
Preset pressure value Ps1Afterwards, then it needs by twin-tub pattern switching to be single cylinder mode, i.e. execution step S3, to reduce system pressure.
Wherein, system pressure value PdFor the system high pressure pressure of connect compressor exhaust, pressure value PS1And PS2Need basis
The different set different value of refrigerant, by taking R410A as an example, PS1It can be 3.0-5.0Mpa, preferably 4.8Mpa, PS2It can be 3.0-
5.0Mpa, preferably 3.5Mpa.
From the foregoing, it will be observed that the refrigerating method of this duplex cylinder compressor air conditioner enables compressor by the state of outdoor environment temperature
With single cylinder mode or twin-tub mode elder generation trial operation, further again by the feedback result of system pressure, further to adjust compression
There is the probability that protection is shut down so as to which air conditioner is greatly reduced, and can also reduce system in operation in the operational mode of machine
Pressure reduces system loading.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and replacement can also be made, these are improved and replacement
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of duplex cylinder compressor air conditioner, which is characterized in that including duplex cylinder compressor, switch unit, be used for sensing chamber's outer ring
The temperature detecting unit of border temperature and pressure sensing cell for detection system pressure；The switch unit is used for according to
System pressure detected by outdoor environment temperature detected by temperature detecting unit and the pressure sensing cell controls
The duplex cylinder compressor switches between twin-tub operational mode and single cylinder operational mode；There are two in parallel for the duplex cylinder compressor tool
Compression cylinder, two compression cylinders respectively have individual gas returning port and share a gas outlet.
2. a kind of refrigerating method of duplex cylinder compressor air conditioner, which comprises the following steps:
S1, the operation of air conditioner refrigeration mode, execute step S2；
S2, judge whether outdoor environment temperature T is greater than set temperature threshold value Ts, if so then execute step S3, then follow the steps if not
S4；
S3, compressor are with single cylinder mode operation, the first setting duration t1Step S5 is executed afterwards；
S4, compressor are with twin-tub mode operation, the second setting duration t2Step S8 is executed afterwards；
S5, judge system pressure PdWhether the first setup pressure value P is greater thans1, if so then execute step S6, then follow the steps if not
S7；
S6, compressor shutdown third set duration t3Step S1 is executed afterwards；
S7, judge system pressure PdWhether the second setup pressure value P is greater thans2, if so then execute step S3, then follow the steps if not
S4；
S8, judge system pressure PdWhether the first preset pressure value P is greater thans1, if so then execute step S3, then follow the steps if not
S4；
Wherein, the first setup pressure value Ps1Greater than the second setup pressure value Ps2。
3. the refrigerating method of duplex cylinder compressor air conditioner according to claim 2, which is characterized in that the set temperature threshold
Value TsIt is 30-70 DEG C.
4. the refrigerating method of duplex cylinder compressor air conditioner according to claim 3, which is characterized in that the set temperature threshold
Value TsIt is 50 DEG C.
5. the refrigerating method of duplex cylinder compressor air conditioner according to claim 2, which is characterized in that when the described first setting
Long t1It is 0-5 minutes.
6. the refrigerating method of duplex cylinder compressor air conditioner according to claim 5, which is characterized in that when the described first setting
Long t1It is 1 minute.
7. the refrigerating method of duplex cylinder compressor air conditioner according to claim 2, which is characterized in that when the described second setting
Long t2It is 0-5 minutes.
8. the refrigerating method of duplex cylinder compressor air conditioner according to claim 7, which is characterized in that when the described second setting
Long t2It is 1 minute.
9. the refrigerating method of duplex cylinder compressor air conditioner according to claim 2, which is characterized in that when the third is set
Long t3It is 0-5 minutes.
10. the refrigerating method of duplex cylinder compressor air conditioner according to claim 9, which is characterized in that the third setting
Duration t3It is 3 minutes.
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| CN201710053795.6A CN106642777B (en) | 2017-01-22 | 2017-01-22 | Duplex cylinder compressor air conditioner and its refrigerating method |
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| CN107289661B (en) * | 2017-06-30 | 2019-12-27 | 美的集团武汉制冷设备有限公司 | Air conditioning system and control method thereof |
| CN109916056B (en) * | 2018-08-17 | 2020-08-14 | 珠海格力电器股份有限公司 | Method and device for controlling cylinder cutting of compressor, unit and air conditioning system |
| CN110186165B (en) * | 2019-05-31 | 2021-04-02 | 宁波奥克斯电气股份有限公司 | Control method and device of air conditioner |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062866A (en) * | 2013-01-04 | 2013-04-24 | 广东美的制冷设备有限公司 | Energy saving control method, energy saving control system and air conditioner |
| CN203375701U (en) * | 2013-06-26 | 2014-01-01 | 广东美的暖通设备有限公司 | Heat-pump water heater |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0343687A (en) * | 1989-07-10 | 1991-02-25 | Hitachi Ltd | Coolant compressor and capacity control method thereof |
| JP2006153454A (en) * | 2006-03-14 | 2006-06-15 | Sanyo Electric Co Ltd | Supercritical refrigerating device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062866A (en) * | 2013-01-04 | 2013-04-24 | 广东美的制冷设备有限公司 | Energy saving control method, energy saving control system and air conditioner |
| CN203375701U (en) * | 2013-06-26 | 2014-01-01 | 广东美的暖通设备有限公司 | Heat-pump water heater |
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