CN102038272B - Energy-saving compound air-conditioning device for food freezing and thawing device - Google Patents
Energy-saving compound air-conditioning device for food freezing and thawing device Download PDFInfo
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- CN102038272B CN102038272B CN201010579042A CN201010579042A CN102038272B CN 102038272 B CN102038272 B CN 102038272B CN 201010579042 A CN201010579042 A CN 201010579042A CN 201010579042 A CN201010579042 A CN 201010579042A CN 102038272 B CN102038272 B CN 102038272B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/85—Food storage or conservation, e.g. cooling or drying
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- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
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Abstract
The invention provides an energy-saving compound air-conditioning device for a food freezing and thawing device, and the device comprises three circulations which are a solution dehumidification circulation system, a refrigeration working medium circulation system and an air circulation system for a freezing room and a thawing room respectively. The food freezing and thawing process is as follows: air entering into the freezing room firstly passes through a solar solution dehumidification system for dehumidification and enthalpy drop and further is processed into low-temperature saturated air through an evaporator to cool food, the air out of the freezing room firstly passes through a heat exchanger for carrying out heat exchange with return air of the thawing room under the actin of a fan, then passes through an atmospheric condenser for heating and humidification and further passes through a second-path evaporator in the thawing room for further temperature adjustment and humidity adjustment so as to carry out thawing treatment on the food, an electric heater behind the heat exchanger is used as an air temperature rising auxiliary device, and the return air passing through the thawing room of the heat exchanger enters into the solution dehumidification system for processing and is further sent into the freezing room for realizing the whole circulation under the actin of the fan. The energy-saving compound air-conditioning device is mainly applied in food freezing and thawing compound systems, and has great energy-saving effect.
Description
Technical field
The present invention relates to be used for food freezing and the air conditioning flow process and the device that thaw, belong to food cold storage and deforst technique field.
Background technology
Along with the fast development of food industry, people constantly enlarge the frozen food consumption figure in recent years, and are also increasingly high to the quality requirement of frozen food.Yet food product refrigeration, refrigeration enterprise are the large electricity consumers, and wherein the consumption of food product refrigeration, refrigeration processing aspect electric energy will account for 68% of whole business electrical amount according to statistics.How under the prerequisite that guarantees the frozen product quality, reducing power consumption of polymer processing is freezing, refrigeration enterprise question of common concern.
Freezing and thawing is the important operation program of food product refrigeration processing.The freezing method of food is varied, can it be divided into three kinds of freezing by means of air method, mediate contact freezing process and direct contact freezing methods according to the different of the way of contact of cooling medium and food.The freezing by means of air method adopts the low temperature and high relative humidity air that food is cooled off, and has no side effect, and freezing efficiency is good, is one of at present the most general freezing method.Thawing to be similar to the inverse process that is regarded as freezing, and frozen food must thaw before consumption or processing, and reasonably thawing is the key that keeps the frozen food quality.The subject matter that occurs in the course of defrosting of food is juice loss, secondly is bad reactions such as microbial reproduction.At present, commonly used defreezing method have that nature thaws, microwave thawing, water thawing and air thawing etc.Naturally it is the most energy-conservation to thaw, but thawing rate receives microbial contamination slowly and easily.Water thawing has the fast characteristics of thawing rate, and has avoided the loss of weight, but exists the microbial contamination in the melt water to freeze problems such as article and solubility loss.Microwave thawing is under action of alternative electric field, utilizes the electrical property of material itself to generate heat to make to freeze article and thaw, and its advantage is that speed is fast, and efficient is high, but microwave to water and ice penetrate and be absorbed with difference, cause the heating non-uniform phenomenon easily.Air thawing adopts the circulation of low temperature and high relative humidity force air to thaw, and food defrosting speed is fast, and thaws evenly, and thawing time is short, and food color is fresh, does not have dry and weight saving phenomenon, is one of defreezing method of both economical practicality.
Utilize air as food freezing and the medium that thaws; Can satisfy food freezing and the quality requirement that thaws well; In addition with the condensation heat of cold-producing medium in the refrigerating plant the thermal source that thaws as food; Make up the hybrid system of refrigerating plant and thawing apparatus, and in process of refrigerastion, combine the solar energy solution dehumidification system, realized reducing the purpose of system energy consumption well.
Summary of the invention
Technical problem: the purpose of this invention is to provide a kind of energy-efficient energy saving composite aircondition that is used for food freezing and thawing apparatus.
Technical scheme:The energy saving composite aircondition that the present invention is used for food freezing and thawing apparatus comprises and is used to freeze with the refrigeration working medium cyclic part of air circulation part, cooling and the heating freezing room and the defrosting room circulating air of defrosting food, is used for the concentrated solution regenerating section that the enthalpy circulating air falls in the dehumidifying of freezing room circulating air before cooling processing; Wherein, be used for freezing the air circulation part with defrosting food, the air input of the air output termination evaporimeter of solution moisture removing device is processed into the low temperature saturated air food is carried out freezing processing; The air output order of freezing room connects the showering spray type condenser through second blower fan, gas heat-exchanger, the 4th volume damper, electric heater; Another air output of gas heat-exchanger connects solution moisture removing device through first blower fan, realizes whole air circulation;
In the refrigeration working medium cyclic part; The refrigeration working medium output of showering spray type condenser connects first evaporimeter through first refrigerant expansion valve; The output of first evaporimeter connects the refrigeration working medium input of showering spray type condenser through refrigeration compressor, realizes whole refrigeration working medium circulation;
In the dehumidification solution regenerating section; The solution output of solution moisture removing device connects the solution input of solar thermal collector through solution circulation pump; The input of the solution output termination solution regenerator of solar thermal collector; The solution input of the output termination solution moisture removing device of solution regenerator is realized the circulation of whole dehumidification solution.
Its concrete course of work is following: the air that gets into freezing room falls through the dehumidifying of solar energy solution moisture removing device earlier and is processed into the low temperature saturated air through first evaporimeter again behind the enthalpy food is carried out freezing processing; The air that comes out from freezing room is after the return air heat exchange of next Lu Xianjing gas heat-exchanger of second fan action and defrosting room; Behind showering spray type condenser warming and humidifying; Again behind the further conditioning of No. the second evaporimeter in the defrosting room to the food processing of thawing; Electric heater behind the gas heat-exchanger is as the atmosphere temperature rising servicing unit; The back is mixed under the effect of first blower fan from the return air of freezing room in defrosting room return air through gas heat-exchanger 19 and another road, gets into to send into freezing room again after solution moisture removing device is handled and realize whole circulation.
Beneficial effect: the invention has the beneficial effects as follows:
1, native system adopts solar energy regeneration type solution dehumidification system that the cooling of the evaporator cools in freezing room again behind the enthalpy is fallen in the air dehumidifying earlier that gets into freezing room; This not only can less greatly freezing room in the area of evaporimeter; Can reduce the frosting of evaporator surface again, improve the service behaviour of equipment greatly.
2, with the condenser heat of cold-producing medium in the refrigerating plant the thermal source that thaws as food; Constitute and freeze and the thawing apparatus hybrid system; The condensation heat part of having avoided single type to freeze cold storage cooling device is wasted, and has realized purpose of energy saving, has simplified equipment again.
3, through closing the refrigeration expansion valve of freezing room; And relevant air valve; Can realize the independent operating of defrosting room; In addition when food freezing or thaw finish after, can make it from freezing or thawed state changes frozen state over to through regulating corresponding refrigeration expansion valve, the flexibility that equipment uses is more intense.
Description of drawings
Fig. 1 is the energy saving composite air-conditioning system structure composition frame chart of food freezing of the present invention and thawing apparatus.
Wherein have: freezing room 1; Defrosting room 2; Solution regenerator 3; Solar thermal collector 4; Solution moisture removing device 5; Solution circulation pump 6; First volume damper 7; Second volume damper 16; The 3rd volume damper 18; The 4th volume damper 20; Tendencies adjustable valve 21; First refrigerant expansion valve 8 and second refrigerant expansion valve 11; First evaporimeter 9 and second evaporimeter 12; Showering spray type condenser 13; Refrigeration compressor 14; Electric heater 15; First blower fan 10; Second blower fan 17; Expansion valve 18; Gas heat-exchanger 19.
The specific embodiment
Instance below in conjunction with 1 pair of invention of accompanying drawing further details:
The energy saving composite air-conditioning system of this food freezing and thawing apparatus has three sub-loop to constitute, ie in solution dehumidifying circulation, refrigeration working medium circulation and air circulation.Food freeze and the flow process of thawing be get into freeze the storehouse air earlier through solution moisture removing device 5 dehumidify enthalpy falls and after; Send into freezing room after first evaporimeter 9 is further lowered the temperature processing; Food in the freezing room 1 is carried out freezing processing, and the air that acted on then is return air under the effect of second blower fan 17, after dividing two-way wherein one tunnel return air heating up through the return air heat exchange of coming out in gas heat-exchanger 19 and the defrosting room 2; Sending into showering spray type condenser 13 heats up behind the humidification; Send into defrosting room 2, behind evaporator 12 further conditionings, frozen food is carried out forced circulation thaw; When the shortage of heat of condenser, start 15 pairs of air of electric heater and assist intensification.The return air that comes out from freezing room 1 in another road; Adjusting through expansion valve 18; Guarantee under the prerequisite of defrosting room air quantity requirement; After the return air that comes out through the defrosting room of gas heat-exchanger 19 mixed, under the effect of first blower fan 10, entering solution moisture removing device 5 dehumidified again and sends into freezing room and realized whole circulation.In addition can be through closing first refrigerant expansion valve 8, the 4th volume damper 20 and first volume damper 7; Open tendencies adjustable valve 21 and realize the isolated operation of defrosting room, tendencies adjustable valve 21 is in closed condition when freezing room 1 and defrosting room 2 are worked simultaneously.
Refrigerant loop; Form by refrigeration compressor 14, showering spray type condenser 13, first evaporimeter 9 and second evaporimeter 12 and first refrigerant expansion valve 8 and second refrigerant expansion valve 11; In freezing room 1; Air supply parameter can satisfy through first refrigerant expansion valve 8 of regulating before the evaporimeter 9, and size that also can be through first refrigerant expansion valve 8 after freezing completion is by freezing to change into frozen state.Second evaporimeter 12 of defrosting room; Second refrigerant expansion valve 11 through regulating before it changes its refrigerating capacity; Satisfy the needed air parameter of defrosting food; After the end of thawing, can regulate the aperture of second refrigerant expansion valve 11, make defrosting room change frozen state over to through closing the 4th volume damper 20.
The solar energy solution dehumidification system is by solution moisture removing device 5, solution regenerator 3; Solution circulation pump 6, solar thermal collector 4 are formed; Solution is to after being dehumidified by the air-supply of sending first blower fan 10; Under the effect of green regenerative energy sources solar energy, regenerate, thereby accomplish the solution dehumidification circulation, can regulate the air quantity size that the air quantity that gets into dehumidifier 5 also promptly gets into freezing room through first volume damper 7.
Its characteristics have: the circulating air of frozen food falls enthalpy through solution moisture removing device 5 dehumidifying earlier and handles before getting into evaporimeter 9 coolings; The circulating air that comes out from freezing room 1 divides two-way, and one the tunnel is getting into showering spray type condenser warming and humidifying after the circulating air heat exchange that gas heat-exchanger 19 and defrosting room 2 come out;
With the condenser heat of cold-producing medium in the refrigerating plant the thermal source that thaws, adopt come the return air from freezing room of showering spray type condenser 13 warming and humidifyings after gas heat-exchanger 19 heat exchange as the circulating air that thaws as food; Electric heater 15 is between gas heat-exchanger 19 and the showering spray type condenser 13, as circulating air heating servicing unit;
The energy saving composite air-conditioning system that is used for food freezing and thawing apparatus is with the thaw thermal source of the condenser heat in the refrigerating plant as food.This system is made up of three circulations, solution dehumidification circulation, refrigeration working medium circulation and freezing room, defrosting room air circulation system.Food freeze and the flow process of thawing is to get into the air freeze the storehouse to fall through the dehumidifying of solar energy regeneration type solution dehumidification system earlier that to handle temperature through first via evaporimeter again behind the enthalpy be-25～-18 ℃; Relative humidity is cooled off food for >=85% Cryogenic air; The air that comes out from freezing room is after the return air heat exchange of next Lu Xianjing gas heat-exchanger of fan action and defrosting room; Behind showering spray type condenser warming and humidifying; Again the further conditioning of No. the second evaporimeter in defrosting room to 8～15 ℃ of temperature to the parameter of Shi Du ≧ 85% to the food processing of thawing; Electric heater behind the heat exchanger is as the atmosphere temperature rising servicing unit; The back is mixed under the effect of blower fan from the return air defrosting room return air direct and through heat exchanger that freezing room comes out in another road, gets into and sends into freezing room realization whole circulation after solution moisture removing device is handled again.
Claims (2)
1. energy saving composite aircondition that is used for food freezing and thawing apparatus is characterized in that this device comprises and is used to freeze with the refrigeration working medium cyclic part of air circulation part, cooling and the heating freezing room and the defrosting room circulating air of defrosting food, is used for the concentrated solution regenerating section that the enthalpy circulating air falls in the dehumidifying of freezing room circulating air before cooling processing; Wherein, be used for freezing the air circulation part with defrosting food, the air input of air output termination first evaporimeter (9) of solution moisture removing device (5) is processed into the low temperature saturated air food is carried out freezing processing; The air output of freezing room (1) connects showering spray type condenser (13) through second blower fan (17), gas heat-exchanger (19), the 4th volume damper (20), electric heater (15) in proper order; Another air output of gas heat-exchanger (19) connects solution moisture removing device (5) through first blower fan (10), realizes whole air circulation;
In the refrigeration working medium cyclic part; The refrigeration working medium output of showering spray type condenser (13) connects first evaporimeter (9) through first refrigerant expansion valve (8); The output of first evaporimeter (9) connects the refrigeration working medium input of showering spray type condenser (13) through refrigeration compressor (14), realizes whole refrigeration working medium circulation;
In the dehumidification solution regenerating section; The solution output of solution moisture removing device (5) connects the solution input of solar thermal collector (4) through solution circulation pump (6); The input of the solution output termination solution regenerator (3) of solar thermal collector (4); The solution input of the output termination solution moisture removing device (5) of solution regenerator (3) is realized the circulation of whole dehumidification solution.
2. according to the said energy saving composite aircondition that is used for food freezing and thawing apparatus of claim 1, it is characterized in that electric heater (15) is between gas heat-exchanger (19) and the showering spray type condenser (13), as circulating air heating servicing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010579042A CN102038272B (en) | 2010-12-09 | 2010-12-09 | Energy-saving compound air-conditioning device for food freezing and thawing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010579042A CN102038272B (en) | 2010-12-09 | 2010-12-09 | Energy-saving compound air-conditioning device for food freezing and thawing device |
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| Publication Number | Publication Date |
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| CN102038272A CN102038272A (en) | 2011-05-04 |
| CN102038272B true CN102038272B (en) | 2012-09-19 |
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| CN201010579042A Expired - Fee Related CN102038272B (en) | 2010-12-09 | 2010-12-09 | Energy-saving compound air-conditioning device for food freezing and thawing device |
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| GB2546507B (en) * | 2016-01-19 | 2022-03-02 | Kenwood Ltd | Food processing hub |
| CN106578845A (en) * | 2016-12-09 | 2017-04-26 | 青岛科技大学 | Fresh keeping refrigerator for quickly unfreezing frozen foods with circulated water |
| CN110762724A (en) * | 2018-07-28 | 2020-02-07 | 青岛海尔空调器有限总公司 | Self-cleaning control method for air conditioner |
| CN110762712A (en) * | 2018-07-28 | 2020-02-07 | 青岛海尔空调器有限总公司 | Self-cleaning control method for air conditioner |
| CN110762810A (en) * | 2018-07-28 | 2020-02-07 | 青岛海尔空调器有限总公司 | Self-cleaning control method for air conditioner |
| CN110762697A (en) * | 2018-07-28 | 2020-02-07 | 青岛海尔空调器有限总公司 | Self-cleaning control method for air conditioner |
| CN110762760A (en) * | 2018-07-28 | 2020-02-07 | 青岛海尔空调器有限总公司 | Self-cleaning control method for air conditioner |
| CN110762809A (en) * | 2018-07-28 | 2020-02-07 | 青岛海尔空调器有限总公司 | Self-cleaning control method for air conditioner |
| CN112817267A (en) * | 2020-12-28 | 2021-05-18 | 杭州新新制冷设备有限公司 | Corpse sterilization and thawing machine control system |
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