CN201451190U

CN201451190U - Low-temperature cold air food storage set with evaporation-type condenser

Info

Publication number: CN201451190U
Application number: CN200920081417XU
Authority: CN
Inventors: 刘照勇; 彭豫
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-02
Filing date: 2009-06-02
Publication date: 2010-05-12
Anticipated expiration: 2019-06-02

Abstract

The utility model discloses a low-temperature cold air food storage set with an evaporative condenser, mainly consisting of an evaporator (1), a liquid-vapor separator (2) connected with one end of the evaporator, a compressor (3) connected with the liquid-vapor separator, and an expansion valve (4) connected with the other end of the evaporator (1). The utility model is characterized in that a condenser is also connected between the expansion valve (4) and the compressor (3). Compared with the traditional grain cooling set, the cooling efficiency of the utility model is improved obviously, and compared with the grain cooling set, more than 40 percent energy is saved. Simultaneously, the utility model can be used under high temperature climate in summer, and the high temperature weather has small effect on the cooling effect.

Description

A kind of low-temperature cold wind grain storage unit with evaporative condenser

Technical field

The utility model relates to a kind of low-temperature grain-storage unit in the refrigerating field, specifically is meant a kind of low-temperature cold wind grain storage unit with evaporative condenser.

Background technology

The cryopreservation of grain not only can keep grain freshness, reduce grain aging speed, delay quality deterioration, prolong shelf life, and can also reduce the grain loss, improve grain processing technology, reduce insect pest and go mouldy, save expense expenditures such as fumigating, take grain out of a granary to sun it.Simultaneously, grain adopts cryopreservation can also effectively avoid the stifling residue of chemical agent to the healthy harm that brings of people.Therefore, the cryopreservation of grain has remarkable economical and social benefit, more and more is subjected to the attention of grain department.

Up to now, people have explored such as technology such as natural low temperature grain storage, grain cooling machine group low-temperature grain-storages, make the cryopreservation problem of grain obtain very big improving.Though natural low temperature grain storage cost is lower, be subjected to the restriction of natural environment quite big, generally only could realize cryopreservation, so its limitation is big, is unsuitable for extensive promotion and application in NORTH CHINA winter low temperature area.And the relative natural low temperature grain storage of grain cooling machine group low-temperature grain-storage has remarkable advantages, because grain cooling machine group low-temperature grain-storage also can be lowered the temperature to grain in summer, broken away from the restriction that low-temperature grain-storage is subjected to the temperature factor theoretically, but its cryogenic effect and energy consumption also be subjected to the influence and the restriction of natural conditions to a great extent.

Because the grain cooling machine group is generally used in summer, its operation principle is to extract outdoor natural air earlier, circulation by cold-producing medium is with airborne heat sucking-off, make air be processed into low-temperature cold wind, take away the grain heat among then low-temperature cold wind being sent into the grain heap, thereby reach the purpose of low-temperature grain-storage.Because the cold-producing medium in the grain cooling machine group after absorbing heat, raises temperature through compressor again, rejects heat in the atmosphere by air-cooled condenser then.Because summer, outer atmospheric temperature was higher, heat in the air-cooled condenser discharges very difficulty, cause consumption of compressor significantly to increase, therefore the refrigerating efficiency of this grain cooling machine group is very low, maximum at the heat that adds grain in summer, therefore its energy consumption is very high, extremely unfavorablely uses in low-temperature grain-storage.

The utility model content

The purpose of this utility model is to overcome the defective that present grain cooling machine group refrigerating efficiency is low, energy consumption is excessive, and a kind of low-temperature cold wind grain storage unit with evaporative condenser is provided.

The purpose of this utility model is achieved through the following technical solutions: a kind of low-temperature cold wind grain storage unit with evaporative condenser, main by evaporimeter, the gas-liquid separator that is connected with evaporimeter one end, the compressor that is connected with gas-liquid separator, and the expansion valve that is connected with evaporimeter other end composition, between expansion valve and compressor, also be connected with condenser simultaneously.

In order to reach optimum efficiency, this condenser adopts evaporative condenser. simultaneously, described evaporative condenser mainly by casing, be arranged on the blower fan at casing top, all be arranged on precooling copper tube and fin group, condensation copper pipe fins set, water pipe, drip tray, the shower nozzle of box house, and the water pump composition that is arranged on the casing outside; One end of water pipe is horizontally set on the bottom of casing and is connected with drip tray, and the other end is positioned at the upper end of casing behind water pump, and shower nozzle then is arranged on this water pipe that is positioned at the casing upper end; Precooling copper tube and fin group static housing upper end, and be positioned at the top of shower nozzle, condensation copper pipe fins set be then near precooling copper tube and fin group, and be positioned at the below of shower nozzle, and the condensation copper pipe fins set also links to each other with precooling copper tube and fin group by copper pipe.

In order to meet the different needs, the quantity of described shower nozzle be one and more than.Simultaneously, enter casing, also be provided with the air intake stormproof louvre at the middle part of casing in order to prevent rainwater.

Further, described evaporimeter adopts finned evaporator, and also is provided with blower fan at an end of evaporimeter.

The utility model compared with prior art has the following advantages and beneficial effect:

(1) the utility model adopts after the evaporative condenser, and not only its refrigerating efficiency significantly improves than traditional grain cooling machine group, and its energy-saving effect is more remarkable, and is generally energy-conservation more than 40% than grain cooling machine group.

(2) the utility model can use under the summer high temperature weather, and hot weather is very little to the refrigeration influence.

Description of drawings

Fig. 1 is an overall structure schematic diagram of the present utility model;

Fig. 2 is the structural representation of evaporative condenser of the present utility model.

The specific embodiment

Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.

Embodiment

As shown in Figure 1, evaporimeter 1 adopts general finned evaporator at present, and the one end links to each other with gas-liquid separator 2, and the other end is connected with expansion valve 4.For being absorbed the later cold air of heat energy, evaporimeter 1 is blown in the silo, next door at evaporimeter 1 also is provided with blower fan 5, and evaporimeter 1 and blower fan 5 be arranged in the casing with import and export, according to the actual conditions of silo, evaporimeter 1 and blower fan 5 can be any amount.

In the gas-liquid separator 2 cold-producing medium is housed, and participates in the circulation of whole system.Simultaneously, the other end of gas-liquid separator 2 is connected with an end of compressor 3, and the other end of compressor 3 then links to each other with an end of condenser 6, and the other end of expansion valve 4 then is connected with the other end of condenser 6.Thereby, make to form an airtight loop between evaporimeter 1, gas-liquid separator 2, compressor 3, condenser 6, expansion valve 4, the evaporimeter 1.

For the grain cooling machine group that fully the overcomes prior art defective that refrigerating efficiency is not high, power consumption is excessive when the summer, condenser 6 adopts evaporative condensers, and its concrete structure as shown in Figure 2.

This evaporative condenser mainly is made up of the casing 7 that can be made into arbitrary shape, precooling copper tube and fin group 8, condensation copper pipe fins set 9, water circulating pump 10, water pipe 11, air intake stormproof louvre 12, drip tray 13, nozzle 14 and blower fan 5.Wherein, cold copper tube and fin group 8, condensation copper pipe fins set 9, drip tray 13 and nozzle 14 all are arranged on the inside of casing 7, and water circulating pump 10, water pipe 11 are arranged on the outside of casing 7.Blower fan 5 is arranged on the top of casing 7,12 surfaces that are arranged on casing 7 of air intake stormproof louvre, and be positioned at the middle part of casing 7.

Precooling copper tube and fin group 8 and condensation copper pipe fins set 9 all are positioned at the upper end of casing 7, and precooling copper tube and fin group 8 is positioned at the top of condensation copper pipe fins set 9.Drip tray 13 is arranged on the bottom of casing 7, the bottom that is arranged on casing 7 of an end level of water pipe 11, and be connected with drip tray 13.The other end of this water pipe 11 then is connected with water circulating pump 10.The other end of water circulating pump 10 also is connected with water pipe 11, and the double more flat folding 90 of this water pipe 11 is spent later on the also upper end that is positioned at casing 7 of level, and should hold water pipe 11 between precooling copper tube and fin group 8 and condensation copper pipe fins set 9.

Simultaneously,, also be provided with some nozzles 14 uniformly being positioned at casing 7 upper ends and being on the horizontally disposed water pipe 11, its quantity be one and more than.The user is according to concrete needs, and the quantity of this nozzle 14 can be determined arbitrarily.

Operation principle of the present utility model is: form low-temp low-pressure gas behind the heat of the cold-producing medium in the evaporimeter 1 through absorbing air, and form high temperature and high pressure gas by compressor 3 behind gas-liquid separator 2; This high temperature and high pressure gas forms cryogenic high pressure liquid after condenser 6, and forms low-temp low-pressure liquid and enter in the evaporimeter 1 after expansion valve 4.The air that has been absorbed heat becomes cold wind and sends into warehouse grain heap absorption grain heat through blower fan 5, can realize the cryopreservation of grain.

And the operation principle of evaporative condenser of the present utility model is: the water of drip tray 13 is recycled water pump 10 pressurization backs by water pipe 11, through nozzle 14 ejections, forms a large amount of small water droplets.Because the throttling action of nozzle 14, the heat of water droplet around a small amount of small water droplet absorbs and vaporizing, make most of water droplet temperature be minimized, these water droplets are fallen the very thin moisture film of formation on the condensation copper pipe fins set 9 simultaneously, the be condensed high-temperature gas cold-producing medium heating of 9 li of copper tube and fin groups of moisture film, the heat of vaporization of water absorption refrigeration agent becomes gas, enters by blower fan 5 and is drawn into the nearly saturated air of formation the next nonsaturated air from air intake stormproof louvre 12, and unevaporated water droplet falls into drip tray 13.The high-temperature gas cold-producing medium is condensed into the low temperature liquid cold-producing medium for 9 li in the condensation copper pipe fins set, because the swabbing action of top blower fan 5, nearly saturated air is mingled with water droplet and moves upward through precooling copper tube and fin group 8, water droplet is blocked, nearly saturated air is heated by the high-temperature gas cold-producing medium of precooling copper tube and fin group 8 the insides, nearly saturation air temperature raises and is taken away row to atmosphere by blower fan, the high-temperature gas cold-producing medium of precooling copper tube and fin group 8 the insides is tentatively cooled off, and enters 9 condensations of condensation copper pipe fins set.

As mentioned above, just can realize the utility model preferably.

Claims

1. low-temperature cold wind grain storage unit with evaporative condenser, mainly by evaporimeter (1), the gas-liquid separator (2) that is connected with evaporimeter one end, the compressor (3) that is connected with gas-liquid separator, and the expansion valve (4) that is connected with evaporimeter (1) other end is formed, it is characterized in that, between expansion valve (4) and compressor (3), also be connected with condenser (6).

2. a kind of low-temperature cold wind grain storage unit with evaporative condenser according to claim 1 is characterized in that, described condenser (6) adopts evaporative condenser.

3. a kind of low-temperature cold wind grain storage unit according to claim 2 with evaporative condenser, it is characterized in that, described evaporative condenser mainly by casing (7), be arranged on the blower fan (5) at casing top, be arranged on precooling copper tube and fin group (8), condensation copper pipe fins set (9), water pipe (11), drip tray (13), the shower nozzle (14) of box house, and be arranged on outside water pump (10) composition of casing (7); One end of water pipe (11) is arranged on the bottom of casing (7) and is connected with drip tray (13), and the other end is positioned at the upper end of casing (7) behind water pump (10), and shower nozzle (14) then is arranged on this water pipe (11) that is positioned at the casing upper end; Precooling copper tube and fin group (8) static housing upper end, and be positioned at the top of shower nozzle (14), condensation copper pipe fins set (9) is then near precooling copper tube and fin group (8), and is positioned at the below of shower nozzle (14), and condensation copper pipe fins set (9) also links to each other with precooling copper tube and fin group (8) by copper pipe.

4. a kind of low-temperature cold wind grain storage unit with evaporative condenser according to claim 3 is characterized in that, the quantity of described shower nozzle (14) be one and more than.

5. a kind of low-temperature cold wind grain storage unit with evaporative condenser according to claim 3 is characterized in that, also is provided with air intake stormproof louvre (12) at the middle part of casing (7).

6. a kind of low-temperature cold wind grain storage unit with evaporative condenser according to claim 1 is characterized in that, also is provided with blower fan (5) at an end of evaporimeter (1).

7. a kind of low-temperature cold wind grain storage unit with evaporative condenser according to claim 1 is characterized in that described evaporimeter (1) is a finned evaporator.