CN103673366B - Two-dimensional refrigerating plant - Google Patents
Two-dimensional refrigerating plant Download PDFInfo
- Publication number
- CN103673366B CN103673366B CN201310369623.1A CN201310369623A CN103673366B CN 103673366 B CN103673366 B CN 103673366B CN 201310369623 A CN201310369623 A CN 201310369623A CN 103673366 B CN103673366 B CN 103673366B
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- CN
- China
- Prior art keywords
- temperature side
- high temperature
- low temperature
- heat exchanger
- refrigerating plant
- 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.)
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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
- F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- 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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/047—Water-cooled condensers
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/26—Problems to be solved characterised by the startup of the refrigeration cycle
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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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0251—Compressor control by controlling speed with on-off operation
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2103—Temperatures near a heat exchanger
Abstract
The present invention provides a kind of two-dimensional refrigerating plant, the decay during supercharging of the freeze cycle of suppression two-dimensional refrigerating plant, and the decline of the heating ability caused that suppresses to be deteriorated by supercharging.The two-dimensional refrigerating plant of the present invention by with low temperature side refrigerant piping connect low temperature side compressor, series heat exchanger, low temperature side expansion valve, low-temperature side heat exchanger low temperature side freeze cycle with high temperature side refrigerant piping is connected high temperature side compressor, carry out high temperature side cold-producing medium and the heat exchanger of cooled medium heat exchange, high temperature side expansion valve, the high temperature side freeze cycle of series heat exchanger pass through series heat exchanger thermally coupled, when starting refrigerating plant, start low temperature side compressor, thereafter, high temperature side compressor is started.The decline of the heating ability caused in accordance with the invention it is possible to decay during the supercharging of freeze cycle of suppression two-dimensional refrigerating plant suppressing is deteriorated by supercharging.
Description
Technical field
The present invention relates to that there is low temperature side freeze cycle and the two-dimensional refrigerating plant of high temperature side freeze cycle.
Background technology
Patent document 1 discloses that existing two-dimensional refrigerating plant.Specifically, patent document 1 discloses that as
The starter of lower two-dimensional refrigerating plant: by possessing connection, this two-dimensional refrigerating plant is mounted with that low temperature side compresses
The low temperature side system of the low temperature side refrigerant piping of machine, tandem condenser, low temperature side expansion valve and vaporizer
Cryogen system is mounted with high temperature side compressor, condenser, high temperature side expansion valve and with above-mentioned with possessing to be connected
Tandem condenser carries out the high temperature side refrigerant system of the high temperature side refrigerant piping of the vaporizer of heat exchange
Constituting, the starter of above-mentioned two-dimensional refrigerating plant is provided with and detects the low pressure along above-mentioned high temperature side refrigerant piping
The thermostat of the refrigerant temperature of loop feature flowing, and it is provided with following controller: when running beginning,
Start above-mentioned high temperature side compressor, when the detection temperature of above-mentioned thermostat becomes below design temperature, make
State low temperature side compressor start, and when the refrigerant temperature of above-mentioned low pressure circuit portion is compressed at above-mentioned high temperature side
After machine startup in time the most not becoming below design temperature, above-mentioned high temperature side compressor is made to stop
Only.
In a word, in patent documentation 1, for be cooled to the startup of purpose two-dimensional refrigerating plant, work as fortune
When row starts, starting high temperature side freeze cycle, the low pressure of the freeze cycle of high temperature side declines, from refrigeration
After the temperature of agent confirms that pressure have dropped, start low temperature side freeze cycle.
Patent documentation 1: Japanese Unexamined Patent Publication 2-143056 publication
In the case of quoting the two-dimensional refrigerating plant disclosed in document 1, the low pressure pressure of high temperature side freeze cycle
Power excessive attenuation, the supercharging making freeze cycle according to load difference is poor, additionally, there are freeze cycle efficiency
The situation of difference.
Summary of the invention
The present invention is deteriorated by supercharging with the decay during supercharging of freeze cycle of suppression two-dimensional refrigerating plant, suppression
The heating ability caused drops to problem.
The two-dimensional refrigerating plant of the present invention will connect low temperature side compressor, tandem with low temperature side refrigerant piping
Heat exchanger, low temperature side expansion valve, low-temperature side heat exchanger low temperature side freeze cycle with use high temperature side
Refrigerant piping connects high temperature side compressor, carries out the heat friendship with cooled medium heat exchange of the high temperature side cold-producing medium
Parallel operation, high temperature side expansion valve, the high temperature side freeze cycle of series heat exchanger are handed over by tandem heat
Parallel operation thermally coupled, when starting refrigerating plant, starts low temperature side compressor, thereafter, starts high temperature side compression
Machine.
The invention effect of the present invention is as follows.
In accordance with the invention it is possible to decay during the supercharging of freeze cycle of suppression two-dimensional refrigerating plant and suppress by
The decline of the heating ability that supercharging variation causes.
Accompanying drawing explanation
Fig. 1 is the freeze cycle pie graph during binary heating operation of two-dimensional refrigerating plant.
Fig. 2 is control flow Fig. 1.
Fig. 3 is control flow Fig. 2.
In figure:
1 low temperature side freeze cycle, 2 low temperature side compressors, 3 low temperature side expansion valves, 4 low temperature side rooms
Outer heat-exchanger, 10 high temperature side freeze cycle, 11 high temperature side compressors, 12 high temperature side expansion valves,
20 heat exchangers, 21 series heat exchangers, 30 are cooled medium, and 40 control devices.
Detailed description of the invention
If being used as to utilize side by the high temperature side freeze cycle of two-dimensional refrigerating plant, then can the heat of output high-temperature
Water.But, low temperature side freeze cycle is being passed through series heat exchanger thermally coupled with high temperature side freeze cycle
Two-dimensional refrigerating plant in, if starting from the low state of the temperature of series heat exchanger, circulate instability,
The supercharging of freeze cycle produces decay, and supercharging is deteriorated, and heating ability declines.
Therefore, in the two-dimensional refrigerating plant of the present embodiment, low temperature side pressure will be connected with low temperature side refrigerant piping
Contracting machine, series heat exchanger, low temperature side expansion valve, the low temperature side freezing of low-temperature side heat exchanger follow
Ring is connected high temperature side compressor with high temperature side refrigerant piping, carries out high temperature side cold-producing medium and cooled medium
The heat exchanger of heat exchange, high temperature side expansion valve, the high temperature side freeze cycle of series heat exchanger are led to
Cross series heat exchanger thermally coupled, when starting refrigerating plant, start low temperature side compressor, thereafter, open
Dynamic high temperature side compressor.According to the present embodiment, low temperature side freeze cycle is being passed through with high temperature side freeze cycle
In the hot linked two-dimensional refrigerating plant of series heat exchanger, when starting this two-dimensional refrigerating plant, start low
Temperature side compression machine, after making the temperature of series heat exchanger increase, starts high temperature side compressor, due to energy
Enough states high from the temperature of series heat exchanger start binary cycle, therefore, it is possible to make high temperature side freezing follow
The low pressure of ring stably runs binary cycle with not declining, therefore, it is possible to suppression is by two-dimensional refrigerating plant
The heating ability that causes such as supercharging variation decline.
Hereinafter, use accompanying drawing that the two-dimensional refrigerating plant of the present embodiment is illustrated.Fig. 1 is the present embodiment
Freeze cycle pie graph when the binary heating of two-dimensional refrigerating plant runs.Two-dimensional refrigerating plant possesses low temperature side
Freeze cycle 1 and high temperature side freeze cycle 10.Low temperature side freeze cycle 1 is joined by low temperature side cold-producing medium
Pipe connects low temperature side compressor 2, expansion valve 3, low temperature survey outdoor heat converter 4, heat exchanger 20, string
Connection formula heat exchanger 21 and constitute.High temperature side freeze cycle 10 connects high temperature by high temperature side refrigerant piping
Side compression machine 11, heat exchanger 20, high temperature side expansion valve 12, series heat exchanger 21 and constitute.
It addition, cooled medium is by circulating and inflow heat exchanger 20 under the effect of pump, by heat exchange
Device 20 carries out heat exchange with cold-producing medium and is heated, generate hot water, and supply to needs end.
Fig. 2 is the control flow chart of the two-dimensional refrigerating plant of the present embodiment.With Fig. 2 to supply high-temperature hot water
Binary heating start the control of binary cycle when running from the binary cycle halted state of two-dimensional refrigerating plant
Flow process illustrates.
In low temperature side freeze cycle 1, the cold-producing medium compressed by low temperature side compressor 2 becomes high-pressure gaseous,
And flow into series heat exchanger 21, carried out by the low pressure two-phase system cryogen with high temperature side freeze cycle 10
Heat exchange, high-pressure gaseous refrigerant condenses.Thereafter, condensed cold-producing medium is at low-temperature side heat exchanger 4
In carry out heat exchange with the air stirred by fan and evaporate, gasify.The expanded valve of this gaseous refrigerant 3
Blood pressure lowering becomes the cold-producing medium of gas-liquid two-phase, and is inhaled into compressor 2, is again compressed into high-pressure gaseous.?
Low temperature side freeze cycle 1 repeats this circulation.
In high temperature side freeze cycle 10, the cold-producing medium compressed by high temperature side compressor 11 becomes high-pressure gaseous,
And inflow heat exchanger 20, carry out heat exchange with cooled medium 30 and liquefy.Liquid refrigerant is expanded
Valve 12 decompressional expansion becomes the cold-producing medium of gas-liquid two-phase, and flows into series heat exchanger 21, with low temperature side
The gaseous refrigerant of freeze cycle 1 carries out heat exchange and gasifies.This gaseous refrigerant is inhaled into compressor 11,
It is compressed into high-pressure gaseous once again.This circulation is repeated in high temperature side freeze cycle 10.
Binary heating operation is actuated for explanation.First, start to start two-dimensional refrigerating plant (S1).
Even if starting low temperature side freeze cycle 1, when the temperature of series heat exchanger 21 is low, low temperature
The pressure of side freeze cycle 1 also declines.In the case of the ability of low temperature side freeze cycle 1 declines,
If starting high temperature side freeze cycle 10, the pressure of low temperature side freeze cycle 1 is caused to decline further, high temperature
The low pressure of side freeze cycle 10 also declines.The decay of heat when this is supercharging, becomes following of supercharging difference
Ring.If startup low temperature side freeze cycle 1 temperature at series heat exchanger 21 are in the shape that generates heat
Start high temperature side freeze cycle 10 under state, then the pressure of high temperature side freeze cycle 10 will not decline, and becomes steady
Fixed freeze cycle.Therefore, in order to carry out starting low temperature side freeze cycle 1 and making series heat exchanger
This operation that the temperature of 21 rises, first, starts low temperature side compressor 2(S2).Then, series connection is worked as
The temperature of formula heat exchanger 21 rises to during set point of temperature (C DEG C) (S3), starts high temperature side compressor 11
(S4).Thereafter, perform the heating of normal binary and run control (S5).By above loop start,
Supercharging when binary heating can be made to run is smooth, becomes stable circular flow.
Fig. 3 is other control flow chart of the two-dimensional refrigerating plant of the present embodiment.What binary heating ran opens
Kinetic energy is enough is replaced the control described in Fig. 2 by controlling described in Fig. 3.Specifically, first, start to open
Dynamic two-dimensional refrigerating plant (S1).Secondly, as Fig. 2, start low temperature side compressor 2(S2).Then,
When the temperature of series heat exchanger 21 rises to set point of temperature (C DEG C) (S3 1), start high temperature
Side compression machine 11(S4).On the other hand, the temperature at series heat exchanger 21 does not rises to regulation temperature
In the case of the state of degree (C DEG C) continues, in order to prevent owing to series heat exchanger 21 heats
Make low temperature side freeze cycle 1 can not condense and cause the temperature of series heat exchanger 21 not rise,
After low temperature side compressor 2 starts in the case of the stipulated time (D second) (S3 2), start high temperature
Side compression machine 11(S4).It is controlled as described above by carrying out, it is possible to supercharging when making binary heating run is smooth,
Become stable circular flow.Thereafter, perform the heating of normal binary and run control (S5).
It addition, low temperature side freeze cycle 1 or high temperature side freeze cycle detected in binary heating runs
In the case of 10 make low temperature side compressor 2 or high temperature side compressor 11 stop extremely, make low temperature side pressure
Contracting machine 2 and high temperature side compressor 11 stop, and thereafter, restart.This restarts and also is able to
Heat to run for the binary as above-described embodiment and start.
Claims (2)
1. a two-dimensional refrigerating plant, will connect low temperature side compressor, series connection with low temperature side refrigerant piping
Formula heat exchanger, low temperature side expansion valve, low-temperature side heat exchanger low temperature side freeze cycle with use high temperature
Side refrigerant piping connects high temperature side compressor, carries out the high temperature side cold-producing medium heat with cooled medium heat exchange
Exchanger, high temperature side expansion valve, the high temperature side freeze cycle of above-mentioned series heat exchanger are passed through above-mentioned
Series heat exchanger thermally coupled, it is characterised in that
When starting above-mentioned two-dimensional refrigerating plant, start above-mentioned low temperature side compressor, when above-mentioned tandem heat is handed over
After the temperature of parallel operation reaches set point of temperature, start above-mentioned high temperature side compressor.
Two-dimensional refrigerating plant the most according to claim 1, it is characterised in that
After the time that above-mentioned low temperature side compressor start begins to pass through regulation, even if handing in above-mentioned tandem heat
In the case of the temperature of parallel operation is not reaching to set point of temperature, also start above-mentioned high temperature side compressor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012202191A JP2014055753A (en) | 2012-09-14 | 2012-09-14 | Binary refrigeration device |
| JP2012-202191 | 2012-09-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103673366A CN103673366A (en) | 2014-03-26 |
| CN103673366B true CN103673366B (en) | 2016-08-10 |
Family
ID=49033908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310369623.1A Active CN103673366B (en) | 2012-09-14 | 2013-08-22 | Two-dimensional refrigerating plant |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2708833B1 (en) |
| JP (1) | JP2014055753A (en) |
| CN (1) | CN103673366B (en) |
| ES (1) | ES2781483T3 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015183929A (en) * | 2014-03-24 | 2015-10-22 | サンデンホールディングス株式会社 | Heat pump type heating device |
| US20160265814A1 (en) * | 2015-03-11 | 2016-09-15 | Heatcraft Refrigeration Products Llc | Water Cooled Microchannel Condenser |
| CN104913435B (en) * | 2015-05-12 | 2022-01-18 | 珠海格力电器股份有限公司 | Air conditioning system, air conditioner and control method thereof |
| CN108266915A (en) * | 2018-03-05 | 2018-07-10 | 天津商业大学 | It is a kind of to use single working medium CO2Make the cascade refrigeration system of refrigerant |
| CN109210817A (en) * | 2018-10-22 | 2019-01-15 | 重庆优玛泰思特仪器有限公司 | Three-level cascade refrigeration system |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61101770A (en) * | 1984-10-23 | 1986-05-20 | 三菱電機株式会社 | Heat pump type air-conditioning hot-water supply machine |
| JPH07104060B2 (en) * | 1988-11-24 | 1995-11-13 | ダイキン工業株式会社 | Starter for dual refrigeration system |
| JPH03263556A (en) * | 1990-03-12 | 1991-11-25 | Sanyo Electric Co Ltd | Multiple refrigerating machine |
| JPH07104061B2 (en) * | 1990-11-30 | 1995-11-13 | ダイキン工業株式会社 | Dual freezer |
| US5170639A (en) * | 1991-12-10 | 1992-12-15 | Chander Datta | Cascade refrigeration system |
| JPH08189713A (en) * | 1995-01-13 | 1996-07-23 | Daikin Ind Ltd | Binary refrigerating device |
| JP2000065431A (en) * | 1998-08-24 | 2000-03-03 | Matsushita Electric Ind Co Ltd | Apparatus for refrigerating cycle and compressor therefor |
| JP3175706B2 (en) * | 1998-09-30 | 2001-06-11 | ダイキン工業株式会社 | Binary refrigeration equipment |
| JP2004190917A (en) * | 2002-12-10 | 2004-07-08 | Sanyo Electric Co Ltd | Refrigeration device |
| US6766652B2 (en) * | 2002-12-18 | 2004-07-27 | Gsle Development Corporation | Dual independent chamber ultra-low temperature freezer |
| JP2004286289A (en) * | 2003-03-20 | 2004-10-14 | Sanyo Electric Co Ltd | Refrigerant cycle device |
| KR20050062077A (en) * | 2003-12-19 | 2005-06-23 | 엘지전자 주식회사 | Dual refrigerating system |
| JP2006064199A (en) * | 2004-08-24 | 2006-03-09 | Daikin Ind Ltd | Refrigeration device |
| CN201021855Y (en) * | 2006-12-20 | 2008-02-13 | 广东西屋康达空调有限公司 | Overlapped coupling high-temperature heat reuse air-conditioner group |
| CN101755175A (en) * | 2007-06-04 | 2010-06-23 | 开利公司 | Refrigerant system with cascaded circuits and performance enhancement features |
| US20110016897A1 (en) * | 2008-02-04 | 2011-01-27 | Mitsubishi Electric Corporation | Air conditioning-hot water supply combined system |
| JP5711448B2 (en) * | 2009-02-24 | 2015-04-30 | ダイキン工業株式会社 | Heat pump system |
| CN102506502A (en) * | 2011-10-19 | 2012-06-20 | 广东美的暖通设备限公司 | Heat-accumulation-type cascade-cycle water heating machine and control method thereof |
-
2012
- 2012-09-14 JP JP2012202191A patent/JP2014055753A/en active Pending
-
2013
- 2013-08-22 CN CN201310369623.1A patent/CN103673366B/en active Active
- 2013-08-23 ES ES13181585T patent/ES2781483T3/en active Active
- 2013-08-23 EP EP13181585.4A patent/EP2708833B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014055753A (en) | 2014-03-27 |
| ES2781483T3 (en) | 2020-09-02 |
| CN103673366A (en) | 2014-03-26 |
| EP2708833A1 (en) | 2014-03-19 |
| EP2708833B1 (en) | 2020-03-25 |
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Effective date of registration: 20160812 Address after: Hongkong, China Patentee after: Johnson Controls Hitachi air conditioning technology (Hongkong) Co., Ltd. Address before: Tokyo, Japan, Japan Patentee before: Hitachi Appliances Inc. |
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Effective date of registration: 20180619 Address after: Tokyo, Japan, Japan Patentee after: Hitachi Johnson Controls Air Conditioning Co., Ltd. Address before: Hongkong, China Patentee before: Johnson Controls Hitachi air conditioning technology (Hongkong) Co., Ltd. |