CN202792764U - Double temperature cold water storage freezer - Google Patents

Double temperature cold water storage freezer Download PDF

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Publication number
CN202792764U
CN202792764U CN 201220320404 CN201220320404U CN202792764U CN 202792764 U CN202792764 U CN 202792764U CN 201220320404 CN201220320404 CN 201220320404 CN 201220320404 U CN201220320404 U CN 201220320404U CN 202792764 U CN202792764 U CN 202792764U
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CN
China
Prior art keywords
cold
ice
storage
storage groove
compressor
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Expired - Fee Related
Application number
CN 201220320404
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Chinese (zh)
Inventor
刘猛
王芳
郭超
吴昊
李琳
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University of Shanghai for Science and Technology
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University of Shanghai for Science and Technology
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Priority to CN 201220320404 priority Critical patent/CN202792764U/en
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Expired - Fee Related legal-status Critical Current
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Abstract

Disclosed is a double temperature cold water storage freezer. The double temperature cold water storage freezer comprises a compressor (1), a condenser (2), a cool storage capillary tube (3), a cool storage groove (4), a main capillary tube (5), a main evaporator (6), a cool storage coiler (7), a undercooling coiler (8), an electromagnetism valve (9), an electromagnetism valve (10) and a one-way valve (11). The double temperature cold water storage freezer is provided with two working models which comprise an ice storage refrigerating cycle and an ice melting undercooling cycle. The double temperature cold water storage freezer has the advantages of being safe, energy-saving, environment-friendly and convenient to use.

Description

Two temperature cold-storage Water-cooled cabinets
Technical field
The utility model belongs to the technical field of household electrical appliances, relates to a kind of refrigerator, is specifically related to two warm cold-storage Water-cooled cabinets.
Background technology
Along with climate warming and city air-conditioning are universal in recent years, summer, the environment temperature of outdoor commercial frontage was higher.At 28 ℃, the fate of the highest temperature above 35 ℃ is just a lot of such as mean daily temperature.Those are placed in without air conditioner surroundings or the higher refrigerator of room temperature like this, at high temperature its operational effect will be with the rising of condensation temperature undercapacity or increase power consumption.
The utility model content
The purpose of this utility model is, provides a kind of two warm cold-storage Water-cooled cabinet, to overcome the existing above-mentioned shortcoming and defect of prior art.
The technical problem of the required solution of the utility model can be achieved through the following technical solutions:
Two temperature cold-storage Water-cooled cabinets comprise: compressor becomes refrigerant compression the gas of HTHP; Condenser is connected with described compressor, described cold-producing medium is cooled, with the gas cold of the described HTHP highly pressurised liquid that congeals into; Cold-storage groove, be connected with described condenser with magnetic valve by a pair of magnetic valve, have: hold-over coil and sub-cooling coil, seal in the cold-storage capillary of step-down between described hold-over coil and the described magnetic valve, described hold-over coil also is connected with described compressor by check valve, and described sub-cooling coil is connected with described magnetic valve; Main capillary is connected with described sub-cooling coil; And main evaporator, be connected with described main capillary, also be connected with described compressor simultaneously, wherein, have ice-reserving kind of refrigeration cycle and ice-melt and cross cold circulation, described ice-reserving kind of refrigeration cycle has; Hold-over coil and the check valve of compressor, condenser, magnetic valve, cold-storage capillary, cold-storage groove, cold circulation is crossed in described ice-melt, has: the sub-cooling coil of compressor, condenser, magnetic valve, cold-storage groove, main capillary and main evaporator.
Further, two warm cold-storage Water-cooled cabinet of the present utility model can also have such feature:
Condenser (2) adopts air-cooled condenser.
Further, two warm cold-storage Water-cooled cabinet of the present utility model can also have such feature:
In the described cold-storage groove agitating device is set.
Further, two warm cold-storage Water-cooled cabinet of the present utility model can also have such feature:
Described cold-storage groove adopts immersion dual coil pipes cold-storage groove, and hold-over coil and the sub-cooling coil of immersion is set respectively in described cold-storage groove.
Described cold-storage groove is connected with a timing switch.
The beneficial effects of the utility model:
The utility model adopts the cold-storage groove of working at night, guarantee system run all right, cold early stage of releasing of cold circulation and later stage are spent in ice-melt, and degree of supercooling increases and reduce milder, and having adapted in the daytime, environment temperature rises and descends night the condensation temperature rising that causes and the time cycle that descends.
The utility model traditional refrigerator of comparing has increased by one at the cold-storage groove 4 of working at night, and two kinds of mode of operation easy switchings of cold circulation are crossed in ice-reserving kind of refrigeration cycle and ice-melt, do not have too many decision condition, have simplified control system design.
The utility model can as carry out the Energy-saving reformation of cold-storage for the larger Water-cooled cabinet of power dissipation ratio, to adapt to the variation of external environment, utilize the civilian or industrial and commercial electricity consumption peak valley valency policy of this area simultaneously based on improving its operational effect, saves operating cost.
The utlity model has safety, energy-saving and environmental protection, advantage easy to use.
Description of drawings
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is front view of the present utility model.
Fig. 3 is top view of the present utility model.
Fig. 4 is the pressure enthalpy p-h figure that the cold stage is released in the refrigerator ice-melt.
Fig. 5 is the warm entropy T-S figure that the cold stage is released in the refrigerator ice-melt.
Reference numeral:
The 1-compressor, 2-condenser, 3-cold-storage capillary, 4-cold-storage groove, 5-master's capillary, 6-main evaporator, 7-hold-over coil, 8-sub-cooling coil, 9-magnetic valve, 10-magnetic valve, 11-check valve.
The specific embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail.Should be understood that following examples are only for explanation the utility model but not for limiting scope of the present utility model.
The experimental technique of unreceipted actual conditions in the following example, usually according to normal condition, or the condition that manufacturer provides is carried out.
Embodiment
The inventor takes into full account on the basis of various achievements in research, designs a kind of two warm cold-storage Water-cooled cabinet, is called for short refrigerator.
Fig. 1 is schematic diagram of the present utility model, Fig. 2 is facade structures of the present utility model, Fig. 3 is planar structure of the present utility model, such as Fig. 1, Fig. 2 and shown in Figure 3, two temperature cold-storage Water-cooled cabinets comprise: compressor 1, condenser 2, cold-storage capillary 3, cold-storage groove 4, main capillary 5, main evaporator 6, hold-over coil 7, sub-cooling coil 8, magnetic valve 9, magnetic valve 10 and check valve 11.
Two temperature cold-storage Water-cooled cabinets have the ice-reserving kind of refrigeration cycle and two kinds of mode of operations of cold circulation are crossed in ice-melt.
The ice-reserving kind of refrigeration cycle has; The hold-over coil 7 of compressor 1, condenser 2, magnetic valve 9, cold-storage capillary 3, cold-storage groove 4 and check valve 11.
Cold circulation is crossed in ice-melt, has: the sub-cooling coil 8 of compressor 1, condenser 2, magnetic valve 10, cold-storage groove 4, main capillary 5 and main evaporator 6.
Fig. 2 is front view of the present utility model, and Fig. 3 is top view of the present utility model, and as shown in Figures 2 and 3, cabinet is comprised of two parts up and down, and top is the temp. keeping casing, fills the cold water of certain water level in the casing.The bottom is the refrigeration system workspace.Cold-storage groove 4 in the lower space is communicated with top temp. keeping casing formation, and the thermic load of cooling of articles is able to balance by the water at low temperature heat exchange.
Cold-producing medium adopts the R134a cold-producing medium.Compressor 1 becomes refrigerant compression the gas of HTHP.
Condenser 2 is connected with compressor 1.Condenser 2 adopts air-cooled condensers, cold-producing medium is cooled, with the gas cold of the HTHP highly pressurised liquid that congeals into.
Cold-storage groove 4 is a relatively independent water tank.Cold-storage groove 4 is connected with magnetic valve by a pair of magnetic valve 9 and is connected with condenser 2, and cold-storage groove 4 has hold-over coil 7 and sub-cooling coil 8.Cold-storage groove 4 internal upper parts arrange hold-over coil 7, sub-cooling coil 8 are set below the cold-storage groove 4.Because the refrigerator refrigeration capacity is less, should not carry out dynamic ice-making.Can utilize the free convection of water, or agitating device promotes water circulation when adding micro-constant, the part heat that sub-cooling coil in the water is discharged melts the outer ice sheet of pipe of upper strata coil pipe.Its evaporating temperature should not be excessively low, can be between-5 ℃ ~ 0 ℃ or 2 ℃ ~+10 ℃.
In the cold-storage groove 4 agitating device is set.Cross in the cold circulation in ice-melt, can utilize the free convection of water, setting adds agitating device and promotes water circulation, the part heat of 8 releases of sub-cooling coil in the water is melted the outer ice sheet of pipe of the hold-over coil 7 on upper strata, therefore needn't increase deicing device, simplify system.
Seal in the cold-storage capillary 3 of step-down between hold-over coil 7 and the magnetic valve 9, hold-over coil 7 also is connected with compressor 1 by check valve 11.
Sub-cooling coil 8 is connected with magnetic valve 10.
Main capillary 5 is connected with sub-cooling coil 8, and the cold-producing medium step-down of the sub-cooling coil 8 of flowing through is become the low pressure two phase flow.
Main evaporator 6 is connected with main capillary 5, and the cold-producing medium evaporation endothermic formation low-temp low-pressure gas with the main capillary 5 of flowing through also is connected with compressor 1 simultaneously.
First by the ice-reserving kind of refrigeration cycle, cold storage of ice making in cold-storage groove 4, then cross in the cold circulation in ice-melt, condenser 2 cold-producing medium out is not directly to enter throttling arrangement 5, but by sub-cooling coil 8, heat release in cold-storage groove 4, ice-melt, so that the increase of the degree of supercooling of cold-storage Water-cooled cabinet, and then refrigerating capacity is improved.
Cold-storage groove 4 adopts immersion dual coil pipes cold-storage groove, at cold-storage groove 4 interior hold-over coil 7 and the sub-cooling coils 8 that immersion is set respectively, increased initial cost, but can guarantee system run all right, releasing cold early stage and later stage, degree of supercooling increase and minimizing are milder, have adapted to the condensation temperature rising that environment temperature rises and night, decline caused in the daytime and the time cycle of decline, and the electric energy of saving remedies even surpassed the cost of increase.
Cold-storage groove 4 is connected with a timing switch.Time switch starts hold-over coil 7 work night.Start sub-cooling coil 8 work daytime.
The utility model is set up the cold-storage groove 4 of working in one night, utilizes when night, environment temperature was low, and the period that the unit condensation temperature is lower, setting is lower than or carries out the cold-storage ice making near 0 ℃ evaporating temperature, stores certain cold.Treat to improve 3-5 ℃ of evaporating temperature when daytime, environment temperature raise, simultaneously the cold-storage cold is released to gradually the cold-storage groove 4 that the refrigerator system sets up, increase the front degree of supercooling of system's throttling to increase refrigerating capacity, reduce power consumption, reach energy-conservation and easy to use purpose.
Work at night the period in summer, this refrigerator enters ice-reserving kind of refrigeration cycle pattern, in cold-storage groove 4, freezes on the hold-over coil 7, saves cold with the ice of producing.Working hour by day, refrigerator enters ice-melt and crosses cold circulation, condenser 2 cold-producing medium out is by sub-cooling coil 8, heat release in cold-storage groove 4, ice-melt, so that the increase of the degree of supercooling of cold-storage Water-cooled cabinet, and then refrigerating capacity is improved, guarantee system run all right, cold early stage of releasing of cold circulation and later stage are spent in ice-melt, and degree of supercooling increases and reduce milder, and having adapted in the daytime, environment temperature rises and descends night the condensation temperature rising that causes and the time cycle that descends.
The comparison of cold circulation is crossed in conventional kind of refrigeration cycle and ice-melt
Fig. 4 is the pressure enthalpy p-h figure that the cold stage is released in the refrigerator ice-melt, and Fig. 5 is the warm entropy T-S figure that the cold stage is released in the refrigerator ice-melt, and as shown in Figure 4 and Figure 5, wherein 1-2-3-4-1 is conventional refrigerating theory circulation, and 1-2 '-3 '-4 '-1 is the refrigeration with high overcool theoretical circulation.
As shown in Figure 4 and Figure 5, for the refrigerant compression process, the ice-reserving refrigerator is process 1-2 ', and common refrigerator is process 1-2.By analyzing, the ice-reserving refrigerator is compared with conventional refrigerator, and the big supercooling degree ice-melt lets cool condensation temperature and reduces, thereby has reduced the wasted work amount of compressor.
The condensation process of ice-reserving refrigerator is 2 '-3 ', and common refrigerator is process 2-3, can be found out by Fig. 4 and Fig. 5, the common refrigerator of comparing, because the heat release in hold-over coil of condenser refrigerant liquid out, ice-melt, so that the degree of supercooling of ice-reserving refrigerator increases, refrigerating capacity is improved.
The throttling process of 3 '-4 ' expression ice-reserving refrigerator, common refrigerator is process 3-4.The minimizing of effective refrigerating capacity that throttling causes is mainly relevant with the temperature difference of throttling front and back cold-producing medium, and the temperature difference is less, and the refrigerating capacity of loss is fewer.
Increase the cold-producing medium degree of supercooling when cold because the ice-reserving refrigerator is released, reduced the temperature difference of restricting element capillary import and export cold-producing medium, finally alleviate the minimizing of effective refrigerating capacity; The cold-producing medium evaporation process of 4 '-1 ' expression ice-reserving refrigerator, the big supercooling degree Effective Raise effective refrigerating capacity.
Theory is carried out in the theoretical circulation loop be can be calculated:
The theoretical refrigerating capacity of regular circulation unit is: q 0=h 1-h 41
The theoretical merit of regular circulation unit is: w 0=h 1-h 22
The theoretical refrigerating capacity of big supercooling degree circulating unit is: q ' 0=h 1-h ' 43
The theoretical merit of big supercooling degree circulating unit is: w ' 0=h 1-h ' 24
The theoretical merit reduction of compressor unit is: Δ w 0=w 0-w ' 0=(h 1-h 2)-(h 1-h ' 2)=h 2-h ' 25
The theoretical refrigerating capacity increment of unit is: Δ q 0=q ' 0-q 0=(h 1-h ' 4)-(h 1-h 4)=h 4-h ' 46
Coefficient of refrigerating performance increases: Δϵ = q 0 ′ w 0 ′ - q 0 w 0 = q 0 + Δ q 0 w 0 - Δ w 0 - q 0 w 0 = Δ q 0 w 0 + Δ w 0 q 0 w 0 ( w 0 - Δ w 0 ) - - - ( 7 )
By above theoretical computational process as can be known, because increase big supercooling degree, Δ q 0, Δ w 0All be positive number, the minimizing two aspect factors of the increase of refrigerating capacity and compressor wasted work all cause the increase of coefficient of refrigerating performance.And from putting into practice upper analysis, the utility model cold-storage groove as subcooler, by ice-melt, let cool the degree of supercooling that improves its condensation side, so that condenser 2 does not need to be provided as the heat transfer area that keeps certain degree of supercooling.For R134a, identical evaporating temperature and condensation temperature, 1 ℃ of the every raising of degree of supercooling, refrigerating capacity will improve about about 1.1%.
So, can utilize the valley power cold storage of ice making at night during summer, utilize daytime the ice latent heat in the cold-storage groove to cross cold but from condenser 2 primary coolant out, indirectly the cold storage capacity in the cold-storage groove 4 is discharged, increase the refrigerating capacity of circulation, reduce condensation temperature and power consumption, simultaneously the corresponding electrical network peak-valley difference of having alleviated.
The basic operational process of two temperature cold-storage Water-cooled cabinets:
The warm cold-storage Water-cooled cabinet of this pair is comprised of two kinds of basic circulation patterns: cold circulation is crossed in ice-reserving kind of refrigeration cycle and ice-melt
1, ice-reserving kind of refrigeration cycle:
The refrigerant gas of HTHP comes out to air-cooled condenser 2 from compressor 1 and cools, it is open-minded through magnetic valve 9 to be condensed into highly pressurised liquid, magnetic valve 10 cuts out, become the low pressure two phase flow to capillary 3 reducing pressure by regulating flows, arrive the outer ice making of hold-over coil 7 evaporation endothermic pipes in the cold-storage groove 4, the low-temp low-pressure gas of formation flows back to compressor 1 periodic duty by check valve 11 again.In summer, this periodic duty can be at lower period such as the morning 4-6 point of environment temperature at night, and this moment, evaporating temperature and the condensation temperature of system were all lower, and the wide warm area totally-enclosed compressor of selecting matches.
2, cold circulation is crossed in ice-melt
The refrigerant gas of HTHP comes out to air-cooled condenser 2 from compressor 1 and cools, it is open-minded through magnetic valve 10 to be condensed into highly pressurised liquid, magnetic valve 9 turn-offs, the sub-cooling coil 8 continuation coolings of arriving again in the cold-storage groove 4 formed cold, the cold balancing that its liberated heat is discharged by cold-storage groove 4 interior mixture of ice and water, this moment, high-pressure sub-cooled liquid main capillary 5 reducing pressure by regulating flows of flowing through became the low pressure two phase flow, and the low-temp low-pressure gas flow that forms at evaporator main coil pipe 6 interior evaporation endothermics returns compressor 1 periodic duty.In summer, this periodic duty should be in higher period of environment temperature in the daytime, such as the 11-14 point, this moment, the evaporating temperature of system and condensation temperature raise, and at noon the time-division reach the highest, utilize the cold that stores in the cold-storage groove to carry out ice-melt and cross cold circulation, increase refrigerating capacity, reduce power consumption.
More than the specific embodiment of the present utility model is illustrated, but the utility model is as limit, only otherwise break away from aim of the present utility model, the utility model can also have various variations.

Claims (5)

1. two temperature cold-storage Water-cooled cabinets is characterized in that, comprising:
Compressor (1) becomes refrigerant compression the gas of HTHP;
Condenser (2) is connected with described compressor (1), described cold-producing medium is cooled, with the gas cold of the described HTHP highly pressurised liquid that congeals into;
Cold-storage groove (4) is connected 10 by a pair of magnetic valve (9) with magnetic valve) be connected with described condenser (2), have: hold-over coil (7) and sub-cooling coil (8),
Seal in the cold-storage capillary (3) of step-down between described hold-over coil (7) and the described magnetic valve (9), described hold-over coil (7) also is connected with described compressor (1) by check valve (11),
Described sub-cooling coil (8) is connected with described magnetic valve (10);
Main capillary (5) is connected with described sub-cooling coil (8); And
Main evaporator (6) is connected with described main capillary (5), also is connected with described compressor (1) simultaneously,
Wherein, have ice-reserving kind of refrigeration cycle and ice-melt and cross cold circulation,
Described ice-reserving kind of refrigeration cycle has; The hold-over coil (7) of compressor (1), condenser (2), magnetic valve (9), cold-storage capillary (3), cold-storage groove (4) and check valve (11),
Cold circulation is crossed in described ice-melt, has: compressor (1), condenser (2), magnetic valve (10), the sub-cooling coil (8) of cold-storage groove (4), main capillary (5) and main evaporator (6).
2. two warm cold-storage Water-cooled cabinet according to claim 1 is characterized in that:
Condenser (2) adopts air-cooled condenser.
3. two warm cold-storage Water-cooled cabinet according to claim 1, it is characterized in that: described cold-storage groove arranges agitating device in (4).
4. two warm cold-storage Water-cooled cabinet according to claim 1, it is characterized in that: described cold-storage groove (4) adopts immersion dual coil pipes cold-storage groove, and hold-over coil (7) and the sub-cooling coil (8) of immersion is set respectively in described cold-storage groove (4).
5. two warm cold-storage Water-cooled cabinet according to claim 4, it is characterized in that: described cold-storage groove (4) is connected with a timing switch.
CN 201220320404 2012-07-04 2012-07-04 Double temperature cold water storage freezer Expired - Fee Related CN202792764U (en)

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Application Number Priority Date Filing Date Title
CN 201220320404 CN202792764U (en) 2012-07-04 2012-07-04 Double temperature cold water storage freezer

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Application Number Priority Date Filing Date Title
CN 201220320404 CN202792764U (en) 2012-07-04 2012-07-04 Double temperature cold water storage freezer

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104534586A (en) * 2014-12-16 2015-04-22 王天祥 Serialized direct-evaporation-type high-efficient multi-temperature ice storing tank
CN105157265A (en) * 2015-07-29 2015-12-16 西安交通大学 Vapor compression type refrigerating cycle system provided with regenerator used for freezer and refrigerator
CN105571198A (en) * 2015-12-15 2016-05-11 同济大学 Efficient refrigerating system based on cold accumulation and supercooling

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104534586A (en) * 2014-12-16 2015-04-22 王天祥 Serialized direct-evaporation-type high-efficient multi-temperature ice storing tank
CN105157265A (en) * 2015-07-29 2015-12-16 西安交通大学 Vapor compression type refrigerating cycle system provided with regenerator used for freezer and refrigerator
CN105157265B (en) * 2015-07-29 2018-07-03 西安交通大学 For refrigerator and the steam compressed refrigerating circulating system with regenerator of refrigerator
CN105571198A (en) * 2015-12-15 2016-05-11 同济大学 Efficient refrigerating system based on cold accumulation and supercooling
CN105571198B (en) * 2015-12-15 2017-12-26 同济大学 A kind of high-efficiency refrigerating system based on cold-storage supercooling

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130313

Termination date: 20130704

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