CN101338962B - Energy-saving -type cold storage refrigeration system - Google Patents
Energy-saving -type cold storage refrigeration system Download PDFInfo
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- CN101338962B CN101338962B CN2007101562612A CN200710156261A CN101338962B CN 101338962 B CN101338962 B CN 101338962B CN 2007101562612 A CN2007101562612 A CN 2007101562612A CN 200710156261 A CN200710156261 A CN 200710156261A CN 101338962 B CN101338962 B CN 101338962B
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Abstract
The invention discloses an energy-saving refrigeration system, including an evaporator, an expansion valve, a filter, a liquid receiver, a condenser, a compressor and a vapor-liquid separator; wherein, the output terminal of the condenser is sequentially connected with the liquid receiver, the filter, the expansion valve and the evaporator; the output terminal of the evaporator is connected with the input terminal of the compressor through the vapor-liquid separator; a condensing solenoid valve is connected between the output terminal of the compressor and the input terminal of the condenser; a defrosting solenoid valve is connected between the output terminal of the compressor and the input terminal of the evaporator; the evaporator is provided with a fin type temperature sensor. The energy-saving refrigeration system also includes a heater, a first one-way valve and a second one-way valve, wherein the heater is arranged behind the evaporator along the airflow direction, the first one-way valve is arranged between the output terminal of the condenser and the liquid receiver, the second one-way valve is arranged between the output terminal for the heater and the liquid receiver. The refrigeration system fully uses the energy of the system, improves the energy utilization rate, and reduces the energy consumption to a large extent; besides, the refrigeration system is simple in structure and convenient for using.
Description
[technical field]
The present invention relates to cold storage refrigeration system, particularly a kind of defrosting and heating do not need to consume the energy-saving-type cold storage refrigeration system of additional electrical energy or heat energy.
[background technology]
In cold storage refrigeration system, because the surface meeting frosting of the low evaporator fin of temperature just requires defrosting after use a period of time.Usually adopt the electrothermal tube that is arranged on the evaporimeter to defrost at present.Require humidity control for places such as ham processing technology refrigerations, just need the band heater this moment, and heater is usually placed in the evaporimeter back, adopts the electrothermal tube heating, steam pipe coil or hot-water coil pipe heating.In the above-mentioned cold storage refrigeration system, can satisfy instructions for use, but defrosting or heating all need replenishing of other energy, have wasted a large amount of energy.
[summary of the invention]
Purpose of the present invention solves the problems of the prior art exactly, proposes a kind of energy-saving-type cold storage refrigeration system, can make full use of the energy, reduces the energy consumption of cold storage refrigeration system.
For achieving the above object, the present invention proposes a kind of energy-saving-type cold storage refrigeration system, comprise evaporimeter, expansion valve, filter, reservoir, condenser, compressor, vapour liquid separator, the output of described condenser and reservoir, filter, expansion valve, evaporimeter connects successively, the output of evaporimeter is connected to the input of compressor by vapour liquid separator, be connected with the condensation magnetic valve between the output of described compressor and the input of condenser, be connected with the defrosting magnetic valve between the output of compressor and the input of evaporimeter, evaporimeter is provided with the fin temperature sensor, this energy-saving-type cold storage refrigeration system also comprises heater, first check valve, second check valve, described heater is along airflow direction, be installed in the back of evaporimeter, be provided with first check valve between the output of condenser and the reservoir, be provided with second check valve between the output of heater and the reservoir.
As preferably, evaporimeter air intake place also is equipped with return air temperature sensor.
As preferably, also comprise adding the thermoelectrical magnetic valve group described adding between the input that the thermoelectrical magnetic valve group is connected the output of compressor and heater.
As preferably, the described thermoelectrical magnetic valve group that adds comprises low capacity valve in parallel and big capacity valve.
Beneficial effect of the present invention: the present invention's condensation heat that refrigeration system is discarded has made full use of intrasystem energy as the energy of defrosting and heating, has improved energy utilization rate, greatly the reduction of degree the consumption of the energy, and simple in structure, easy to use.
Feature of the present invention and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
[description of drawings]
Fig. 1 is the structural representation of a kind of energy-saving-type cold storage refrigeration system of the present invention;
Fig. 2 is the control principle figure of defrosting flow process among the present invention;
Fig. 3 is the control principle figure of heating procedure among the present invention.
[specific embodiment]
As shown in Figure 1, cold storage refrigeration system provided by the invention, comprise evaporimeter 1, expansion valve 13, filter 14, reservoir 16, condenser 9, compressor 12, vapour liquid separator 17, the output of described condenser 9 and reservoir 16, filter 14, expansion valve 13, evaporimeter 1 connects successively, the output of evaporimeter 1 is connected to the input of compressor 12 by vapour liquid separator 17, be connected with condensation magnetic valve 6 between the input of the output of described compressor 12 and condenser 9, be connected with defrosting magnetic valve 3 between the input of the output of compressor 12 and evaporimeter 1, evaporimeter 1 is provided with fin temperature sensor 11.Connection between each parts realizes by pipeline 20.Move in normal range of operation by low-voltage relay 18, high-voltage relay 19 protection refrigeration systems, each electric elements is connected with control circuit.Perpendicular to evaporimeter 1 direction pressure fan 15 is set.
This energy-saving-type cold storage refrigeration system also comprises heater 2, first check valve 7, second check valve 8, described heater 2 is along airflow direction, be installed in the back of evaporimeter 1, be provided with first check valve 7 between the output of condenser 9 and the reservoir 16, be provided with second check valve 8 between the output of heater 2 and the reservoir 16.Heater 2 plays the temperature adjustment behind the refrigerated dehumidification.Also comprise adding the thermoelectrical magnetic valve group described adding between the input that the thermoelectrical magnetic valve group is connected the output of compressor 12 and heater 2.The described thermoelectrical magnetic valve group that adds comprises low capacity valve in parallel 4 and big capacity valve 5.Low capacity valve 4 and big capacity valve 5 play and add the heat regulating action.First check valve 7 and second check valve 8 are installed in condenser 9 outputs and heater 2 outputs, make the refrigerant liquid physical efficiency flow into reservoir 16 from condenser 9 and heater 2 simultaneously.Evaporimeter 1 air intake place also is equipped with return air temperature sensor 10, controls low capacity valve 4 and the work of capacity valve 5 greatly by the indoor temperature that return air temperature sensor 10 records.
The control principle of defrosting flow process as shown in Figure 2, unit start, fin temperature sensor 11 detects evaporimeters 1 fin temperature, the time relay record unit continuous operating time in the control system.When the fin temperature enters temperature conditions TC less than defrosting, and continuous operating time is greater than defrosting entry time condition HA, and defrosting magnetic valve 3 is opened.The vapours that compressor 12 is discharged enters evaporimeter 1, and this moment, the fin temperature of evaporimeter 1 raise, and frost constantly melts.When evaporimeter 1 fin temperature greater than defrosting end temp condition TD, the duration of perhaps defrosting, defrosting magnetic valve 3 cut out greater than defrosting concluding time condition HB.Finish defrosting, enter next defrosting cycle.Heat in the defrost process comes from the vapours that refrigeration system compressor 12 is discharged.Owing to used partial condensation heat in the defrost process, reduced the condensation heat load of condenser 9.When improving the refrigeration system Energy Efficiency Ratio, defrosting no longer needs other energy.TC: defrosting enters temperature conditions, TD: defrosting end temp condition, HA: defrosting entry time condition, HB: defrosting concluding time condition.
The control principle figure of heating procedure as shown in Figure 3, unit start, condensation magnetic valve 6 is opened, low capacity adds thermoelectrical magnetic valve 4 closes, big capacity adds thermoelectrical magnetic valve 5 and closes.Set value TS-1/3 temperature control precision Δ t when return air temperature sensor 10 detects indoor detected temperatures TH smaller or equal to indoor temperature, low capacity adds thermoelectrical magnetic valve 4 to be opened, and big capacity adds thermoelectrical magnetic valve 5 and closes.The vapours that compressor 12 is discharged adds thermoelectrical magnetic valve 4 by low capacity and enters heater 2, and air is done slightly to heat up.If indoor detected temperatures TH continues to descend, TH≤TS-2/3 Δ t, low capacity adds thermoelectrical magnetic valve 4 closes, and big capacity adds thermoelectrical magnetic valve 5 and opens.The vapours that compressor 12 is discharged adds thermoelectrical magnetic valve 5 by big capacity and enters heater 2, and the width of cloth heated up during air was done.If indoor detected temperatures TH continues to descend, TH≤TS-Δ t, low capacity adds thermoelectrical magnetic valve 4 to be opened, big capacity adds thermoelectrical magnetic valve 5 to be opened, 5S after the time condensation magnetic valve 6 close.All vapours of compressor enter heater 2, and air is done significantly to heat up.If indoor detected temperatures TH rises to TH 〉=TS-1/3 Δ t, return last layer, promptly condensation magnetic valve 6 is opened, and low capacity adds thermoelectrical magnetic valve 4 closes, and big capacity adds thermoelectrical magnetic valve 5 and opens.The vapours that compressor 12 is discharged adds thermoelectrical magnetic valve 5 by big capacity and enters heater 2, and the width of cloth heated up during air was done.If indoor detected temperatures TH rises to TH 〉=TS, return last layer again, low capacity adds thermoelectrical magnetic valve 4 to be opened, and big capacity adds thermoelectrical magnetic valve 5 and closes.The vapours that compressor 12 is discharged adds thermoelectrical magnetic valve 4 by low capacity and enters heater 2, and air is done slightly to heat up.If indoor detected temperatures TH rises to TH 〉=TS+1/3 Δ t, return firm open state, condensation magnetic valve 6 is opened, and low capacity adds thermoelectrical magnetic valve 4 closes, and big capacity adds thermoelectrical magnetic valve 5 and closes.Finish heating, enter next heating cycle.Heat in the heating process comes from the vapours that refrigeration system compressor 12 is discharged.Owing to used part or all of condensation heat in the heating process, reduced the condensation heat load of condenser 9.When improving the refrigeration system Energy Efficiency Ratio, heating no longer needs other energy.TH: indoor detected temperatures, TS: indoor temperature setting value, Δ t: temperature control precision.
The foregoing description is to explanation of the present invention, is not limitation of the invention, any scheme after the simple transformation of the present invention is all belonged to protection scope of the present invention.
Claims (4)
1. energy-saving-type cold storage refrigeration system, comprise evaporimeter (1), expansion valve (13), filter (14), reservoir (16), condenser (9), compressor (12), vapour liquid separator (17), the output of described condenser (9) and reservoir (16), filter (14), expansion valve (13), evaporimeter (1) connects successively, the output of evaporimeter (1) is connected to the input of compressor (12) by vapour liquid separator (17), it is characterized in that: be connected with condensation magnetic valve (6) between the input of the output of described compressor (12) and condenser (9), be connected with defrosting magnetic valve (3) between the input of the output of compressor (12) and evaporimeter (1), evaporimeter (1) is provided with fin temperature sensor (11), this energy-saving-type cold storage refrigeration system also comprises heater (2), first check valve (7), second check valve (8), described heater (2) is along airflow direction, be installed in the back of evaporimeter (1), be provided with first check valve (7) between the output of condenser (9) and the reservoir (16), be provided with second check valve (8) between the output of heater (2) and the reservoir (16).
2. a kind of energy-saving-type cold storage refrigeration system as claimed in claim 1 is characterized in that: evaporimeter (1) air intake place also is equipped with return air temperature sensor (10).
3. a kind of energy-saving-type cold storage refrigeration system as claimed in claim 2 is characterized in that: also comprise adding the thermoelectrical magnetic valve group described adding between the input that the thermoelectrical magnetic valve group is connected the output of compressor (12) and heater (2).
4. a kind of energy-saving-type cold storage refrigeration system as claimed in claim 3 is characterized in that: the described thermoelectrical magnetic valve group that adds comprises low capacity valve (4) in parallel and big capacity valve (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101562612A CN101338962B (en) | 2007-10-15 | 2007-10-15 | Energy-saving -type cold storage refrigeration system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101562612A CN101338962B (en) | 2007-10-15 | 2007-10-15 | Energy-saving -type cold storage refrigeration system |
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| CN101338962A CN101338962A (en) | 2009-01-07 |
| CN101338962B true CN101338962B (en) | 2011-06-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2012094594A1 (en) * | 2011-01-07 | 2012-07-12 | Thermo King Corporation | Refrigeration system with a distributor having a flow control mechanism and a method for controlling such a system |
| CN105042748B (en) * | 2015-08-18 | 2018-10-16 | 广东美的暖通设备有限公司 | Machine room air conditioner |
| CN112629052A (en) * | 2020-04-03 | 2021-04-09 | 恭勤环境科技(上海)有限公司 | Energy-saving high-low temperature alternation test refrigerating system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5319940A (en) * | 1993-05-24 | 1994-06-14 | Robert Yakaski | Defrosting method and apparatus for a refrigeration system |
| US5555744A (en) * | 1994-02-10 | 1996-09-17 | Hoshizaki Denki Kabushiki Kaisha | Refrigerant circuit for ice making machines etc. |
| JP2005048982A (en) * | 2003-07-30 | 2005-02-24 | Mitsubishi Heavy Ind Ltd | Refrigeration unit |
| CN2816701Y (en) * | 2005-07-28 | 2006-09-13 | 江苏天舒电器有限公司 | Thermalelectric coupling defrosting air energy heat pump water heater |
| CN201100809Y (en) * | 2007-10-15 | 2008-08-13 | 浙江盾安人工环境设备股份有限公司 | An energy-saving cool storage refrigeration system |
-
2007
- 2007-10-15 CN CN2007101562612A patent/CN101338962B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5319940A (en) * | 1993-05-24 | 1994-06-14 | Robert Yakaski | Defrosting method and apparatus for a refrigeration system |
| US5555744A (en) * | 1994-02-10 | 1996-09-17 | Hoshizaki Denki Kabushiki Kaisha | Refrigerant circuit for ice making machines etc. |
| JP2005048982A (en) * | 2003-07-30 | 2005-02-24 | Mitsubishi Heavy Ind Ltd | Refrigeration unit |
| CN2816701Y (en) * | 2005-07-28 | 2006-09-13 | 江苏天舒电器有限公司 | Thermalelectric coupling defrosting air energy heat pump water heater |
| CN201100809Y (en) * | 2007-10-15 | 2008-08-13 | 浙江盾安人工环境设备股份有限公司 | An energy-saving cool storage refrigeration system |
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| CN101338962A (en) | 2009-01-07 |
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