CN102478335A - Pressure control method and device of refrigerating unit and refrigerating system - Google Patents
Pressure control method and device of refrigerating unit and refrigerating system Download PDFInfo
- Publication number
- CN102478335A CN102478335A CN2010105592375A CN201010559237A CN102478335A CN 102478335 A CN102478335 A CN 102478335A CN 2010105592375 A CN2010105592375 A CN 2010105592375A CN 201010559237 A CN201010559237 A CN 201010559237A CN 102478335 A CN102478335 A CN 102478335A
- Authority
- CN
- China
- Prior art keywords
- refrigeration unit
- control
- value
- pressure
- modulation device
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000005057 refrigeration Methods 0.000 claims description 109
- 230000003434 inspiratory effect Effects 0.000 claims description 23
- 206010020852 Hypertonia Diseases 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000036962 time dependent Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Images
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a pressure control method and device of a refrigerating unit and a refrigerating system. The pressure control method of the refrigerating unit comprises the following steps: and the air suction adjusting device is arranged between the evaporator of the refrigerating unit and the air suction port of the compressor and is used for controlling the air suction amount of the refrigerating unit. According to the invention, the high pressure of the refrigerating unit can be controlled within a set range, and the safety of the refrigerating unit is further improved.
Description
Technical field
The present invention relates to field of air conditioning, in particular to a kind of compress control method of refrigeration unit and device, refrigeration system.
Background technology
During container refrigeration unit operate as normal, the temperature inside the box is lower, and the unit high pressure is lower, considers that from the cost aspect unit design of condenser gets less relatively.If unit when higher the temperature inside the box is down lowered the temperature, is easy to occur the too high situation of unit high pressure.
Tend to occur the problem of hypertonia to refrigeration unit in the correlation technique, do not propose effective solution at present as yet.
Summary of the invention
Tend to the problem of hypertonia occur and propose the present invention to refrigeration unit in the correlation technique, for this reason, main purpose of the present invention is to provide a kind of compress control method and device, refrigeration system of refrigeration unit, to address the above problem.
To achieve these goals, according to an aspect of the present invention, a kind of compress control method of refrigeration unit is provided.In the compress control method of this refrigeration unit, control the force value of refrigeration unit through the inspiratory capacity of control refrigeration unit.
Further, the force value of the inspiratory capacity control refrigeration unit through the control refrigeration unit comprises: force value and the target pressure value of obtaining refrigeration unit; The force value of the inspiratory capacity control refrigeration unit through the control refrigeration unit is so that the force value of refrigeration unit is consistent with target pressure value.
Further, the force value of the inspiratory capacity control refrigeration unit through the control refrigeration unit comprises and adopts following method to control: K (n)=K (n-1)+m* (P-P0), wherein; M is an adjustment factor, and K (n) is the n time force value that calculates, and K (n-1) is the n-1 time force value that calculates; Wherein, The initial value of K1 is 15%, and P is the current real-time pressure value that collects of unit, and P0 is a target pressure value.
Further, control the inspiratory capacity of said refrigeration unit through the aperture of control suction modulation device.
Further, control the inspiratory capacity of said refrigeration unit through the aperture of control suction modulation device.
To achieve these goals, according to a further aspect in the invention, a kind of pressure control device of refrigeration unit is provided.The pressure control device of this refrigeration unit comprises the suction modulation device, and this suction modulation device is arranged between the air entry of rapid steamer and compressor of said refrigeration unit, is used to control the inspiratory capacity of refrigeration unit.
Further, the aperture scope of suction modulation device be (2%, 100%].
Further, the pressure control device of refrigeration unit also comprises: controller with the suction modulation device, is used to control the aperture of suction modulation device.
Further; Controller also is used to obtain the target pressure value of refrigeration unit; And regulate the pressure of refrigeration unit so that the pressure of refrigeration unit is consistent with target pressure value through the aperture of control suction modulation device; Wherein, the pressure of refrigeration unit is corresponding with the opening value of suction modulation device.
Further, the scope of target pressure value be (9bar, 21bar).
To achieve these goals, according to a further aspect in the invention, a kind of refrigeration system is provided, this refrigeration system has the pressure control device of any one above-mentioned refrigeration unit.
Through the present invention; Adopt the compress control method and the device of any one above-mentioned refrigeration unit; Perhaps refrigeration system; Solved that refrigeration unit tends to occur the problem of hypertonia in the correlation technique, so reached high voltage control with refrigeration unit at setting range, improve the effect of refrigeration unit security.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the sketch map according to the refrigeration system of the embodiment of the invention;
Fig. 2 is the sketch map according to first embodiment of the compress control method of refrigeration unit of the present invention;
Fig. 3 is the sketch map according to second embodiment of the compress control method of refrigeration unit of the present invention;
Fig. 4 is the sketch map according to the 3rd embodiment of the compress control method of refrigeration unit of the present invention; And
Fig. 5 be according to the embodiment of the invention the sketch map of pressure controlled effect of refrigeration unit.
The specific embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the present invention.
Fig. 1 is the sketch map according to the refrigeration system of the embodiment of the invention
As shown in Figure 1; This refrigeration system comprises the compress control method and the device of refrigeration unit; The compress control method of this refrigeration unit and device comprise suction modulation device 10; Wherein, this suction modulation device 10 is arranged between the air entry of rapid steamer 12 and compressor 18 of said refrigeration unit, is used to control the inspiratory capacity of refrigeration unit.
In this embodiment, through increasing the suction modulation device, can in the unit temperature-fall period, control the unit high pressure and in safe range, move.Through utilizing the suction modulation device that the inspiratory capacity of refrigeration unit is controlled, work in setting range thereby control the unit high pressure, guarantee unit safety operation.
According to the embodiment of the invention, a kind of compress control method and device of refrigeration unit also is provided,
Because the suction modulation device is installed between the evaporimeter and compressor air suction mouth of refrigeration unit, this device can be regulated the inspiratory capacity of control compressor through aperture.The suction modulation device has a minimal adjustment aperture Kmin, more than the opening value, must guarantee that unit normally moves at this.During suction modulation device aperture standard-sized sheet, this device should not produce bigger resistance to the gas flow of unit suction side.[Kmin, 100%] is the work aperture scope of suction modulation device, the span of Kmin be (2%, 100%].
Preferably, the aperture scope of suction modulation device be (2%, 100%].
Preferably, the pressure control device of refrigeration unit also comprises: controller with the suction modulation device, is used to control the aperture of suction modulation device.
Preferably; Controller also is used to obtain the target pressure value of refrigeration unit; And regulate the pressure of refrigeration unit so that the pressure of refrigeration unit is consistent with target pressure value through the aperture of control suction modulation device, wherein, the pressure of refrigeration unit is corresponding with the opening value of suction modulation device.Wherein, the corresponding unit minimum pressure of minimum aperture K Pmin, maximum opening 100% corresponding unit maximum pressure Pmax, the controllable pressure output area of unit is: [Pmin, Pmax].
In this embodiment,, and cooperate Automatic adjustment method, can control the inspiratory capacity of refrigeration unit better, in setting range, work, guarantee unit safety operation thereby control the unit high pressure through increase suction modulation device.
According to the embodiment of the invention, a kind of compress control method of refrigeration unit also is provided, in the method, control the force value of refrigeration unit through the inspiratory capacity of control refrigeration unit.
Preferably, the force value of the inspiratory capacity control refrigeration unit through the control refrigeration unit comprises: force value and the target pressure value of obtaining refrigeration unit; The force value of the inspiratory capacity control refrigeration unit through the control refrigeration unit is so that the force value of refrigeration unit is consistent with target pressure value.
Preferably, the force value of the inspiratory capacity control refrigeration unit through the control refrigeration unit comprises and adopts following method to control: K (n)=K (n-1)+m* (P-P0), wherein; M is an adjustment factor, and K (n) is the n time force value that calculates, and K (n-1) is the n-1 time force value that calculates; Wherein, The initial value of K1 is 15%, and P is the current real-time pressure value that collects of unit, and P0 is a target pressure value.
Preferably, control the inspiratory capacity of said refrigeration unit through the aperture of control suction modulation device.
Preferably, this compress control method needs a suction modulation device and a primary control program, and the aperture of suction modulation device is adjustable, and degree of regulation is 0.1%.Primary control program should be able to calculate the suitable opening value of suction modulation device according to the variation of unit pressure, and at short notice the opening value of suction modulation device is adjusted to calculating location.
Through this compress control method; The suction modulation device is regulated the unit inspiratory capacity, thus near pressure safe operation target value set of control unit, in case unit pressure has departed from desired value; This compress control method can be regulated automatically, and the unit force value is got back near the setting value.
According to the embodiment of the invention, a kind of refrigeration system also is provided, this refrigeration system can comprise the pressure control device of refrigeration unit among above-mentioned any embodiment, and can be used for the compress control method of any one above-mentioned refrigeration unit.
Specifically describe in the face of compress control method down:
The concrete computing formula of compress control method can be K (n)=K (n-1)+m* (P-P0).
Wherein, m is an adjustment factor, and span does not have specific (special) requirements.
The force value that K (n) calculates for the n time for primary control program, the force value that K (n-1) calculates for the n-1 time for primary control program is when n=1; Above-mentioned formula can't calculate; Need the aperture K1 of suction modulation device is composed initial value, consider that from unit security aspect the K1 initial value gets 15%.
P is the current real-time high-voltage value that collects of unit, span be generally (5bar, 25bar)
P0 is the target high-voltage value of unit plan control, preferably, span be (9bar, 21bar).
Parameter m can be confirmed through experiment, preferably, can confirm according to following steps:
Suppose a m initial value, according to unit practical adjustments situation, m initial value＜5, the data of test unit high pressure P t variation in time, choosing of time t should be at least more than 2 times of sampling time.Draw out the P-t curve according to test data, judge with the relation of control target P 0 according to control object P in the P-t curve and choose suitable m value.
Fig. 2 is the sketch map according to first embodiment of the compress control method of refrigeration unit of the present invention.
When m hour, the time dependent P-t curve of control object can intersect rapidly with control target P 0 straight line, and gradually away from control target P 0 straight line.
Fig. 3 is the sketch map according to second embodiment of the compress control method of refrigeration unit of the present invention.
When m was big, the time dependent P-t curve of control object can vibrate near control target P 0 straight line, when the deviate of vibration greater than 2 the time, think that then the m value is bigger than normal.
Fig. 4 is the sketch map according to the 3rd embodiment of the compress control method of refrigeration unit of the present invention.
When m was suitable, the time dependent P-t curve of control object is convergence control target P 0 straight line gradually.
Through this compress control method,, can control near safe operation P0 of unit high pressure through setting different pressure value P 0.
Below for controlling one group of test data of goal pressure P0=19bar:
Fig. 5 be according to the embodiment of the invention the sketch map of pressure controlled effect of refrigeration unit.
As can beappreciated from fig. 5,, can the pressure of refrigeration unit be controlled in the reasonable range, near goal pressure, fluctuate through the present invention.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the pressure control device of a refrigeration unit is characterized in that, comprises the suction modulation device, and this suction modulation device is arranged between the air entry of rapid steamer and compressor of said refrigeration unit, is used to control the inspiratory capacity of said refrigeration unit.
2. the pressure control device of refrigeration unit according to claim 1 is characterized in that, the aperture scope of said suction modulation device be (2%, 100%].
3. the pressure control device of refrigeration unit according to claim 1 is characterized in that, also comprises:
Controller with said suction modulation device, is used to control the aperture of said suction modulation device.
4. the pressure control device of refrigeration unit according to claim 1; It is characterized in that; Said controller also is used to obtain the target pressure value of said refrigeration unit; And regulate the pressure of said refrigeration unit so that the pressure of said refrigeration unit is consistent with said target pressure value through the aperture of controlling said suction modulation device, wherein, the pressure of said refrigeration unit is corresponding with the opening value of said suction modulation device.
5. the pressure control device of refrigeration unit according to claim 1 is characterized in that, the scope of said target pressure value be (9bar, 21bar).
6. a refrigeration system is characterized in that, comprises the pressure control device of each described refrigeration unit in the claim 1 to 5.
7. the compress control method of a refrigeration unit is characterized in that, controls the force value of said refrigeration unit through the inspiratory capacity of controlling said refrigeration unit.
8. the compress control method of refrigeration unit according to claim 7 is characterized in that, the force value of controlling said refrigeration unit through the inspiratory capacity of controlling said refrigeration unit comprises:
Obtain the force value and the target pressure value of said refrigeration unit;
The force value of the said refrigeration unit of inspiratory capacity control through controlling said refrigeration unit is so that the force value of said refrigeration unit is consistent with said target pressure value.
9. the compress control method of refrigeration unit according to claim 8 is characterized in that, the force value of controlling said refrigeration unit through the inspiratory capacity of controlling said refrigeration unit comprises and adopts following method to control:
K(n)＝K(n-1)+m*(P-P0)，
Wherein, m is an adjustment factor, and K (n) is the n time force value that calculates, and K (n-1) is the n-1 time force value that calculates, and wherein, the initial value of K1 is 15%, and P is the current real-time pressure value that collects of unit, and P0 is said target pressure value.
10. the compress control method of refrigeration unit according to claim 7 is characterized in that, controls the inspiratory capacity of said refrigeration unit through the aperture of control suction modulation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105592375A CN102478335A (en) | 2010-11-24 | 2010-11-24 | Pressure control method and device of refrigerating unit and refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105592375A CN102478335A (en) | 2010-11-24 | 2010-11-24 | Pressure control method and device of refrigerating unit and refrigerating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102478335A true CN102478335A (en) | 2012-05-30 |
Family
ID=46091051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105592375A Pending CN102478335A (en) | 2010-11-24 | 2010-11-24 | Pressure control method and device of refrigerating unit and refrigerating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102478335A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US10941955B2 (en) | 2017-10-27 | 2021-03-09 | Dometic Sweden Ab | Systems, methods, and apparatuses for providing communications between climate control devices in a recreational vehicle |
| US11254183B2 (en) | 2017-08-25 | 2022-02-22 | Dometic Sweden Ab | Recreational vehicle, cooling device, controlling system and method for controlling the cooling device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002061965A (en) * | 2000-08-23 | 2002-02-28 | Zexel Valeo Climate Control Corp | Freezing cycle |
| JP2004245457A (en) * | 2003-02-12 | 2004-09-02 | Japan Climate Systems Corp | Vehicular air-conditioner |
| JP2006308230A (en) * | 2005-04-28 | 2006-11-09 | Denso Corp | Refrigerating cycle control device |
| JP2009014322A (en) * | 2007-07-09 | 2009-01-22 | Mitsubishi Electric Corp | Air conditioner |
| US20090235673A1 (en) * | 2006-10-31 | 2009-09-24 | Alexander Lifson | Detection of refrigerant release in co2 refrigerant systems |
| JP2009222320A (en) * | 2008-03-17 | 2009-10-01 | Daikin Ind Ltd | Heat pump device |
| CN101605990A (en) * | 2007-02-09 | 2009-12-16 | 三电有限公司 | The capacity control system of variable displacement compressor |
| CN201964703U (en) * | 2010-11-24 | 2011-09-07 | 珠海格力电器股份有限公司 | Energy adjusting device of refrigerating unit and refrigerating system |
| CN102478334A (en) * | 2010-11-24 | 2012-05-30 | 珠海格力电器股份有限公司 | Energy adjusting method and device of refrigerating unit and refrigerating system |
-
2010
- 2010-11-24 CN CN2010105592375A patent/CN102478335A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002061965A (en) * | 2000-08-23 | 2002-02-28 | Zexel Valeo Climate Control Corp | Freezing cycle |
| JP2004245457A (en) * | 2003-02-12 | 2004-09-02 | Japan Climate Systems Corp | Vehicular air-conditioner |
| JP2006308230A (en) * | 2005-04-28 | 2006-11-09 | Denso Corp | Refrigerating cycle control device |
| US20090235673A1 (en) * | 2006-10-31 | 2009-09-24 | Alexander Lifson | Detection of refrigerant release in co2 refrigerant systems |
| CN101605990A (en) * | 2007-02-09 | 2009-12-16 | 三电有限公司 | The capacity control system of variable displacement compressor |
| JP2009014322A (en) * | 2007-07-09 | 2009-01-22 | Mitsubishi Electric Corp | Air conditioner |
| JP2009222320A (en) * | 2008-03-17 | 2009-10-01 | Daikin Ind Ltd | Heat pump device |
| CN201964703U (en) * | 2010-11-24 | 2011-09-07 | 珠海格力电器股份有限公司 | Energy adjusting device of refrigerating unit and refrigerating system |
| CN102478334A (en) * | 2010-11-24 | 2012-05-30 | 珠海格力电器股份有限公司 | Energy adjusting method and device of refrigerating unit and refrigerating system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11254183B2 (en) | 2017-08-25 | 2022-02-22 | Dometic Sweden Ab | Recreational vehicle, cooling device, controlling system and method for controlling the cooling device |
| US11919363B2 (en) | 2017-08-25 | 2024-03-05 | Dometic Sweden Ab | Recreational vehicle, cooling device, controlling system and method for controlling the cooling device |
| US10941955B2 (en) | 2017-10-27 | 2021-03-09 | Dometic Sweden Ab | Systems, methods, and apparatuses for providing communications between climate control devices in a recreational vehicle |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103868299B (en) | The fine adjustment control method of electric expansion valve and system | |
| CN102635926A (en) | Air conditioning system and pressure adjusting method for same | |
| CN103438508B (en) | Variable air delivery through floor air-supply end system and air quantity control method thereof | |
| CN105783185A (en) | Control method and device for preventing condensation of air conditioner | |
| CN103256687A (en) | Self-adaptation control method and device of air conditioner | |
| CN105091204A (en) | Control method of multi-split system | |
| WO2017206679A1 (en) | Air conditioner and mode switching control method thereof | |
| CN103851847A (en) | System and method for controlling electronic expansion valve of air conditioner, and multi-split air conditioner outdoor unit | |
| CN101509693A (en) | Frequency conversion heat pump outdoor machine of air-conditioner electronic expansion valve control method | |
| CN103836762A (en) | Variable frequency air conditioner and method and device for controlling variable frequency air conditioning system | |
| CN104633942A (en) | Frequency adjusting and control method for variable-frequency enhanced vapor injection heat-pump water heater | |
| CN106322639A (en) | Exhaust temperature frequency limiting protection and control method for air conditioner | |
| CN107894045B (en) | Throttling control method and device of air conditioning system and air conditioner | |
| CN105402845A (en) | Method for adjusting air conditioner system | |
| CN102478335A (en) | Pressure control method and device of refrigerating unit and refrigerating system | |
| CN107514739A (en) | A kind of air-conditioner control method | |
| EP2146153B1 (en) | Control method of air conditioner | |
| CN111878964B (en) | Control method and device of electronic expansion valve, air conditioner and storage medium | |
| CN202002259U (en) | Air conditioner | |
| CN108019890B (en) | Air conditioner energy efficiency control method and device and air conditioner system | |
| CN113983635A (en) | Dehumidification method of air conditioner and air conditioner | |
| CN103047734B (en) | A kind of air-conditioner control method of linear adjustable indoor wind speed round | |
| CN107560049B (en) | Humidification air conditioner and humidification disc water temperature control method thereof | |
| CN109058105B (en) | Compressor, air conditioning system and liquid impact prevention control method thereof | |
| CN111442507B (en) | Air conditioner and control method and device thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120530 |