CN100402948C - Refrigerator with two compressors - Google Patents
Refrigerator with two compressors Download PDFInfo
- Publication number
- CN100402948C CN100402948C CNB200510094230XA CN200510094230A CN100402948C CN 100402948 C CN100402948 C CN 100402948C CN B200510094230X A CNB200510094230X A CN B200510094230XA CN 200510094230 A CN200510094230 A CN 200510094230A CN 100402948 C CN100402948 C CN 100402948C
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- Prior art keywords
- branch road
- compressor
- unit
- pressure relief
- valve
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- 238000005057 refrigeration Methods 0.000 claims description 28
- 238000001816 cooling Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000009920 food preservation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
This invention relates to one compressor refrigerator, which comprises the following parts: first branch composed of first vapor set and first flow saving units; second branch composed of second vapor and second flow save unit; cooling recycle loop composed condensator and filter with each exit mouth connected through exit mouth between compressor and exit single valve through load unit into branch flow save entrance with branch terminal valve.
Description
Technical field:
The present invention relates to the steam compression type refrigerator.
Background technology:
Common refrigerator all is to adopt a compressor, a condenser etc. to constitute an independently refrigeration system.Existing utilize one independently the flow direction of refrigeration system by magnetic valve shunting or control cold-producing medium be expanded into relevant many cycle refrigeration systems, for example, the household refrigerator-freezer of machinery control, double temperature double control refrigerator, three circulation refrigerators, four circulation refrigerators etc.There is following weak point in this many loop structures form based on a refrigeration system:
When environment temperature than higher or disposable when putting into a large amount of food, refrigeration system can't in time satisfy the refrigeration requirement of each chamber, it is higher to cause the temperature inside the box to go up, perhaps cooling rate is very slow, influence food preservation and fresh-keeping.
There have some chamber to use to be frequent, and refrigeration system can't be taken other chamber into account, perhaps because continue refrigeration, make and the room temperature of the shared cascade evaporation device in this chamber spend low, food in the freezing case.
The evaporating temperature difference of each chamber causes the compressor operating instability.
When all will freeze in the chamber between more than two because refrigeration system can only be the refrigeration of freezing back, in its refrigerating circuit between the chamber must wait for the regular hour, influence food storage and fresh-keeping.
Summary of the invention:
The present invention is for avoiding above-mentioned existing in prior technology weak point, a kind of refrigerator with two compressors is provided, co-ordination by double-compressor, plural refrigerating circuit can be worked simultaneously, chamber cooling velocity between quickening, shorten refrigeration system to a response time of chamber refrigeration demand, the time that food and extend stores, improve fresh-keeping effect.
The technical scheme that technical solution problem of the present invention is adopted is:
Design feature of the present invention is to connect and compose first branch road by first compressor, first evaporator bank and first throttle units in series; Constitute second branch road by second compressor and second evaporator bank and the second throttling units in series; Described first branch road and second branch road are connected in parallel in the refrigeration cycle that includes condenser and filter; The exhaust outlet of each compressor connects condenser by exhaust check valve respectively, between exhaust outlet of compressor and exhaust check valve, insert the entrance side of the throttling unit that is arranged in branch road by pressure relief unit, be positioned at the arrival end of filter one side at described first branch road and second branch road, the branch road stop valve is set.
Compared with the prior art, beneficial effect of the present invention is embodied in:
Form by two compressors among the present invention two independently refrigeration system according to the demand of chamber between being controlled separately or refrigerated area, decision duty separately, and be not subjected to the influence of the duty of other chamber and the refrigeration system in parallel with it, two refrigeration systems may be worked respectively, also may work simultaneously.When two compressors are worked simultaneously, can accelerate a chamber cooling velocity greatly, shorten refrigeration system to a response time of the cold demand in chamber, in the food and extend storage time, improve fresh-keeping effect.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is another embodiment structural representation of the present invention.
Fig. 3 is the another embodiment structural representation of the present invention.
Number in the figure: 1 first compressor, 2 second compressors, 3 first exhaust check valves, 4 second exhaust check valves, 5 condensers, 6 filters, 7 first branch road stop valves, 8 second branch road stop valves, 9 first throttle unit, 10 second throttling unit, 11 first evaporator bank, 12 second evaporator bank, 13 first pressure relief unit, 14 second pressure relief unit, 15 first magnetic valve groups, 16 second magnetic valve groups,
The specific embodiment:
Referring to Fig. 1, being connected in series by first compressor 1, first evaporator bank 11 and first throttle unit 9 constitutes first branch road; Connect with second evaporator bank 12 and the second throttling unit 10 by second compressor 2 and to constitute second branch road, first branch road and second branch road are connected in parallel in the refrigeration cycle that includes condenser 5 and filter 6, the shared condenser 5 of first branch road and second branch road and a filter 6 are formed two separate kind of refrigeration cycle.
The exhaust outlet of first compressor 1 and second compressor 2 connects condenser 5 by first exhaust check valve 3 and second exhaust check valve 4 respectively, make high-pressure refrigerant in the condenser 5 can reverse flow to compressor; Between the exhaust outlet and first exhaust check valve 3 of first compressor 1, insert the entrance side of the first throttle unit 9 that is arranged in first branch road by first pressure relief unit 13.Between the exhaust outlet and second exhaust check valve 4 of second compressor 2, insert the entrance side of the second throttling unit 10 that is arranged in second branch road by second pressure relief unit 14.
Be positioned at the arrival end of filter 6 one sides at first branch road and second branch road, the branch road stop valve is set, comprise the first branch road stop valve 7 and the second branch road stop valve 8.The branch road stop valve can stop high-pressure refrigerant to enter this branch road.
When compressor is not worked, pressure relief unit is opened, the branch road stop valve is closed, cold-producing medium enters evaporimeter by pressure relief unit, throttling unit successively in the compressor exhaust pipe, make the pressure at compressor suction, exhaust two ends obtain balance, therefore, when compressor is not worked, suction, exhaust two ends are in the low-pressure balance state, can start smoothly.
In concrete the enforcement:
Pressure relief unit comprises that first pressure relief unit 13 and second pressure relief unit 14 are for can or unloading pressure cutoff valve for the release capillary.
Porch in the first throttle unit 9 that is arranged in first branch road is provided with the first magnetic valve group 15; Porch in the second throttling unit 10 that is arranged in second branch road is provided with the arrival end that the second magnetic valve group, 16, the first pressure relief unit 13 insert in the first magnetic valve group 15; The arrival end that second pressure relief unit 14 inserts in the second magnetic valve group 16.Magnetic valve in each magnetic valve group can be the magnetic valve of general solenoid valve, impulse electromagnetic valve or step motor control.
According to refrigerator different between the cell structure setting, first evaporator bank 11 and second evaporator bank 12 can be an evaporimeter or a plurality of evaporator series or compose in parallel, capillary in the first throttle unit 9 and the 11 corresponding settings of first evaporator bank, capillary in the second throttling unit 10 and the 12 corresponding settings of second evaporator bank.
Form by two compressors two independently refrigeration system according to the demand of chamber between being controlled separately or refrigerated area, decision duty separately, and be not subjected to the influence of the duty of other chamber and the refrigeration system in parallel with it, two refrigeration systems may be worked respectively, also may work simultaneously.
One: the second compressor 2 of duty is not worked, 1 work of first compressor.The second branch road stop valve 8 is closed, the first branch road stop valve 7 is opened, first pressure relief unit 13 is closed, second pressure relief unit 14 is opened, second exhaust check valve 4 is closed under pressure naturally, cold-producing medium circulates in the circulatory system that is made of first branch road and condenser 5 etc., promptly gets back to first compressor 1 by first compressor 1 by first exhaust check valve 3, condenser 5, filter 6, the first branch road stop valve 7, first throttle unit 9 and evaporator bank 11, finishes kind of refrigeration cycle.
Two: the first compressors 1 of duty are not worked, 2 work of second compressor.The first branch road stop valve 7 is closed, the second branch road stop valve 8 is opened, second pressure relief unit 14 is closed, first pressure relief unit 13 is opened, first exhaust check valve 3 is closed under pressure naturally: cold-producing medium circulates in the circulatory system that is made of second branch road and condenser 5 etc., promptly get back to second compressor 2 by second exhaust check valve 4, condenser 5, filter 6, the second branch road stop valve 8, the second throttling unit 10 and second evaporator bank 12, finish kind of refrigeration cycle by second compressor 2.
Three: the first compressors 1 of duty and second compressor 2 are simultaneously in work.The first branch road stop valve 7 and the second branch road stop valve 8 are all opened, and first pressure relief unit 13 and second pressure relief unit 14 are all closed.First branch road and second branch road are worked simultaneously.Be cold-producing medium by first compressor 1, second compressor 2 respectively through first exhaust check valve 3, second exhaust check valve 4, condenser 5, filter 6, be divided into two-way then, one the tunnel gets back to compressor 1 through the first branch road stop valve 7, first throttle unit 9, first evaporator bank 11, second compressor 2 is got back to through the second branch road stop valve 8, the second throttling unit 10, second evaporator bank 12 in another road, finishes kind of refrigeration cycle separately respectively.
Four: the first compressors 1 of duty and second compressor 2 are not worked, the first branch road stop valve 7 and the second branch road stop valve 8 are closes, first exhaust check valve 3 and second exhaust check valve 4 are closed under pressure naturally, are all opened by the release path that first pressure relief unit 13 and second pressure relief unit 14 constitute.
In above duty explanation, pressure relief unit 13,14 all adopts stop valve.If as pressure relief unit, under then above four kinds of duties, pressure relief unit is opened all the time with capillary.Under the idle situation of compressor, the cold-producing medium between exhaust outlet and the exhaust check valve enters evaporimeter through pressure relief unit.Under the situation of compressor operating,,, do not influence the duty of refrigeration system basically so only there is a spot of cold-producing medium to enter evaporimeter by pressure relief unit because the flow resistance of cold-producing medium in capillary is far longer than the flow resistance in condenser.In order to guarantee that compressor is inhaled, the abundant balance of pressure at expulsion, when using capillary as pressure relief unit, compressor was greater than 5 minutes each downtime.
In the embodiment shown in Figure 2, the second throttling unit 10 in second branch road is a single capillary, therefore, compared to Figure 1, no longer needs to use the second magnetic valve group 16 among Fig. 2.When 1 work of first compressor, cold-producing medium enters first throttle unit 9 from the first branch road stop valve 7 through the first magnetic valve group 15.The first magnetic valve group 15 is made up of several magnetic valves, different capillary in the assignment system cryogen process first throttle unit 9 enters the different evaporators in first evaporator bank 11, realizes giving chamber or warm area difference or the effect of refrigeration simultaneously between difference by an independent loops.
In the embodiment shown in Figure 3, the second throttling unit 10 in the first throttle unit 9 in first branch road and second branch road is single capillary, therefore, compared to Figure 1, no longer needs to use the first magnetic valve group 15 and the second magnetic valve group 16 among Fig. 3.
In Fig. 1, Fig. 2, structure shown in Figure 3, condenser 5 in the refrigerant circulation loop and filter 6 are provided with routinely.Each independent loops can be that a single cycle also can be expanded into many circulatory systems.
Present embodiment can adopt automatically controlled or mechanical control.
Present embodiment can adopt air-cooled, the direct-cooled or air-cooled and direct-cooled type of cooling that combines.
Claims (4)
1. refrigerator with two compressors, it is characterized in that being connected in series by first compressor (1), first evaporator bank (1 1) and first throttle unit (9) constitutes first branch road; Connect with second evaporator bank (12) and the second throttling unit (10) by second compressor (2) and to constitute second branch road; Described first branch road and second branch road are connected in parallel in the refrigeration cycle that includes condenser (5) and filter (6); The exhaust outlet of each compressor connects condenser (5) by exhaust check valve (3,4) respectively, between exhaust outlet of compressor and exhaust check valve, insert the entrance side of the throttling unit (9,10) that is arranged in branch road by pressure relief unit (13,14), be positioned at the arrival end of filter one side at described first branch road and second branch road, branch road stop valve (7,8) is set.
2. refrigerator according to claim 1 is characterized in that described pressure relief unit (13,14) is the release capillary or unloads pressure cutoff valve.
3. refrigerator according to claim 1 is characterized in that described first evaporator bank (11) and second evaporator bank (12) are an evaporimeter or a plurality of evaporator series or compose in parallel.
4. refrigerator according to claim 1 is characterized in that the porch that is arranged in the throttling unit (9,10) of branch road described magnetic valve group (15,16) being set, and described pressure relief unit (13,14) inserts the arrival end in magnetic valve group (15,16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510094230XA CN100402948C (en) | 2005-09-02 | 2005-09-02 | Refrigerator with two compressors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510094230XA CN100402948C (en) | 2005-09-02 | 2005-09-02 | Refrigerator with two compressors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1924486A CN1924486A (en) | 2007-03-07 |
| CN100402948C true CN100402948C (en) | 2008-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510094230XA Expired - Fee Related CN100402948C (en) | 2005-09-02 | 2005-09-02 | Refrigerator with two compressors |
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| CN (1) | CN100402948C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968288B (en) * | 2010-10-22 | 2012-07-04 | 北京化工大学 | Absorption-compression composite refrigeration cycle system |
| KR102025738B1 (en) * | 2012-07-06 | 2019-09-27 | 삼성전자주식회사 | Refrigerator and heat exchanger for the same |
| CN105466061A (en) * | 2015-12-29 | 2016-04-06 | 西安交通大学 | Two-stage compression refrigerator system and working method thereof |
| CN105466062B (en) * | 2016-01-25 | 2018-07-03 | 珠海格力电器股份有限公司 | Dispense the refrigeration system of cabinet |
| CN111578548B (en) * | 2020-05-25 | 2021-02-26 | 珠海格力电器股份有限公司 | Refrigerator refrigerating system and control method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5131237A (en) * | 1990-04-04 | 1992-07-21 | Danfoss A/S | Control arrangement for a refrigeration apparatus |
| JP2001201235A (en) * | 2000-01-14 | 2001-07-27 | Matsushita Refrig Co Ltd | Refrigerator-freezer |
| CN1313496A (en) * | 2000-03-15 | 2001-09-19 | 株式会社日立制作所 | Refrigerator |
| JP2003207220A (en) * | 2002-01-11 | 2003-07-25 | Sanyo Electric Co Ltd | Cooling device |
| CN2628969Y (en) * | 2003-04-02 | 2004-07-28 | 海尔集团公司 | Multi compressor variable capacity fixed frequency one with several air conditioner |
| US6860116B2 (en) * | 2002-09-18 | 2005-03-01 | Carrier Corporation | Performance enhancement of vapor compression systems with multiple circuits |
| CN1595023A (en) * | 2003-09-10 | 2005-03-16 | 日立家用电器公司 | Refrigerator |
| CN2809533Y (en) * | 2005-06-30 | 2006-08-23 | 合肥美菱股份有限公司 | Refrigerator with double compressors |
-
2005
- 2005-09-02 CN CNB200510094230XA patent/CN100402948C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5131237A (en) * | 1990-04-04 | 1992-07-21 | Danfoss A/S | Control arrangement for a refrigeration apparatus |
| JP2001201235A (en) * | 2000-01-14 | 2001-07-27 | Matsushita Refrig Co Ltd | Refrigerator-freezer |
| CN1313496A (en) * | 2000-03-15 | 2001-09-19 | 株式会社日立制作所 | Refrigerator |
| JP2003207220A (en) * | 2002-01-11 | 2003-07-25 | Sanyo Electric Co Ltd | Cooling device |
| US6860116B2 (en) * | 2002-09-18 | 2005-03-01 | Carrier Corporation | Performance enhancement of vapor compression systems with multiple circuits |
| CN2628969Y (en) * | 2003-04-02 | 2004-07-28 | 海尔集团公司 | Multi compressor variable capacity fixed frequency one with several air conditioner |
| CN1595023A (en) * | 2003-09-10 | 2005-03-16 | 日立家用电器公司 | Refrigerator |
| CN2809533Y (en) * | 2005-06-30 | 2006-08-23 | 合肥美菱股份有限公司 | Refrigerator with double compressors |
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| Publication number | Publication date |
|---|---|
| CN1924486A (en) | 2007-03-07 |
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Address after: 230601 No. 2163 Lianhua Road, Hefei economic and Technological Development Zone, Anhui Patentee after: CHANGHONG MEILING Co.,Ltd. Address before: 230001 No. 48 Wuhu Road, Hefei City, Anhui Province Patentee before: HEFEI MEILING Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080716 Termination date: 20210902 |
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| CF01 | Termination of patent right due to non-payment of annual fee |