CN113739502A - Refrigeration house refrigeration equipment - Google Patents

Abstract

The invention provides a refrigeration equipment of a refrigeration house, which comprises a main body box and an evaporation box, wherein a compressor, a condenser, a throttle valve and a drying filter are arranged in the main body box, the evaporation box is fixed at the inner side of the refrigeration house, the main body box is arranged at the outer side of the refrigeration house, a water receiving disc is also arranged below the condenser, the water receiving disc is connected with a first spray pipe through a first pipeline, the first spray pipe is arranged in the evaporation box, the bottom of the evaporation box is provided with an inclined plate, the lower side of the inclined plate is provided with a water flowing port, the water flowing port is used for fixing a second spray pipe, the second spray pipe extends into the main body box, and the second spray pipe is arranged above the condenser; still be equipped with defrosting mechanism in the evaporation case, defrosting mechanism includes slider and defrosting brush, and the defrosting brush is fixed on slider, and the brush head laminating heat exchange tube and the radiating fin of defrosting brush. The invention reduces the waste of water resources; the heat transfer between the air and the refrigerant flowing in the heat exchange tube is facilitated, and the working efficiency of the equipment is improved; the defrosting and brushing are comprehensive and reduce energy consumption.

Description

Refrigeration house refrigeration equipment

Technical Field

The invention relates to the technical field of refrigeration house equipment, in particular to refrigeration house refrigeration equipment.

Background

The cold storage is a cold wind storage device, which is mainly used for constant temperature storage of food, fruit and vegetable, meat, medicine, chemical raw materials, etc. The refrigeration houses in the prior art usually use refrigeration equipment, and the temperature in the refrigeration houses is reduced so as to achieve the aim of low-temperature storage.

The compressor of the refrigeration principle of the existing refrigeration equipment has the function of compressing steam with lower pressure into steam with higher pressure, so that the volume of the steam is reduced, and the pressure is increased. The compressor sucks working medium steam with lower pressure from the evaporator, the working medium steam is sent into the condenser after the pressure of the working medium steam is increased, the working medium steam is condensed into liquid with higher pressure in the condenser, the liquid is throttled by the throttle valve and then is sent into the evaporator, the liquid is evaporated by absorbing heat in the evaporator to form steam with lower pressure, and then the steam is sent into an inlet of the compressor, so that the refrigeration cycle is realized, and the prior refrigeration equipment mainly has the following problems during working: first, after an evaporator of a refrigerator is used for a certain period of time, frost is formed on the surface of the evaporator, and the frost is attached to a heat exchange tube and a heat dissipation fin of the evaporator to block heat transfer between air and a refrigerant flowing in the heat exchange tube, whereby cooling efficiency is reduced in a relatively short time. Secondly, refrigeration plant's condenser can produce a large amount of heats in the course of the work, and traditional cooling mode is the mode that adopts the water to drench usually, and this mode needs to continuously spray the cooling through continuous cold water, and a lot of water resources are often wasted to this process to the cooling effect is relatively poor.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a refrigeration house refrigeration device.

In order to achieve the purpose, the invention adopts the following technical scheme: a refrigeration house refrigeration equipment comprises a compressor, an evaporator, a condenser, a throttle valve and a drying filter, wherein an air suction port of the compressor is connected with the evaporator, an air outlet of the compressor is connected with an inlet of the condenser through a pipeline, an outlet of the condenser is connected with the drying filter through a pipeline, the drying filter is connected with the evaporator through a pipeline, the drying filter is provided with the throttle valve on a pipeline between the evaporator, the refrigeration house refrigeration equipment further comprises a main body box and an evaporation box, the compressor, the condenser, the throttle valve and the drying filter are arranged in the main body box, the main body box is further provided with a first air outlet, the evaporation box is fixed on the inner side of the refrigeration house, the main body box is arranged on the outer side of the refrigeration house, a water receiving disc is further arranged below the condenser, the water receiving disc is connected with a first spray pipe through a first pipeline, a water pump is arranged on the first pipeline, the first spray pipe is arranged in the evaporation box, the bottom of the evaporation box is provided with an inclined plate, the lower side of the inclined plate is provided with a water flowing port, a second spray pipe is fixed at the water flowing port, the second spray pipe extends into the main body box, and the second spray pipe is arranged above the condenser; the evaporimeter is fixed in the evaporation case, the upside of evaporation case is for having the orifice plate, the inside wall of utensil orifice plate is fixed with first fan, still be equipped with the second gas outlet on the evaporation case, the evaporimeter includes heat exchange tube and radiating fin, still be equipped with defrosting mechanism in the evaporation case, defrosting mechanism includes slider and defrosting brush, defrosting brush is fixed slider is last, the brush head laminating of defrosting brush heat exchange tube and radiating fin.

Preferably, the heat exchange tube is a zigzag tube, the heat exchange tube comprises a straight tube and an elbow tube, the straight tube is provided with the radiating fins, the radiating fins are vertically fixed on the outer surface of the straight tube, the straight tubes are arranged side by side, the straight tubes are on the same horizontal plane, and the radiating fins are vertically arranged.

Preferably, the displacement device sets up the top of evaporimeter, the displacement device includes servo motor, lead screw, moves piece and sliding shaft, servo motor fixes in the evaporation case, servo motor's output shaft passes through the shaft coupling and fixes the one end of lead screw, the other end of lead screw passes through the bearing and connects to be fixed on the inner wall of evaporation case, the both ends of sliding shaft are fixed the inner wall of evaporation case, the sliding shaft with the direction of lead screw with the pipeline direction of straight tube is the same, it is equipped with the confession on the piece to move the lead screw with first screw and the first spacing hole that the sliding shaft passed, first screw with the screw-thread fit of lead screw, the defrosting brush is fixed move on the piece.

Preferably, a first connecting rod is fixed on the moving block, the first connecting rod is horizontally arranged, the defrosting brush is vertically fixed on the first connecting rod, the first connecting rod is perpendicular to the pipeline direction of the straight pipes, the defrosting brush is arranged in a gap between the straight pipes, bristles are arranged on a brush head of the defrosting brush, and the heat exchange pipes and the heat dissipation fins are attached to the bristles.

Preferably, the middle part of the brush hair of defrosting brush has the arc breach, the laminating of arc breach the straight tube, defrosting brush is including end brush and middle brush, one side has the brush hair on the brush head of end brush, the brush head of middle brush both sides all have the brush hair, the quantity of middle brush is compared straight tube one less in quantity, the end brush is two, the end brush is fixed respectively the outside of middle brush, two the arc breach of end brush sets up in opposite directions.

Preferably, the first pipeline penetrates through the side wall of the refrigeration house, enters the refrigeration house, penetrates into the evaporation box from the refrigeration house and is connected with the first spraying pipe.

Preferably, the first conduit comprises a first coil disposed within the cold store.

Preferably, the top of the main body box is provided with a hole plate, and the inner side of the hole plate is fixed with the second fan.

Preferably, the evaporation box and the upper surface of the perforated plate at the top of the main body box are respectively fixed with a filter screen.

Preferably, the first air outlet and the second air outlet fix a louvered door or a perforated plate.

Compared with the prior art, the invention has the beneficial effects that: (1) the defrosting brush is fixed on the sliding device, the brush head of the defrosting brush is attached to the heat exchange tube and the heat dissipation fins, the defrosting brush moves along with the sliding device, when frosting is formed on the heat exchange tube and the heat dissipation fins, the defrosting brush falls to the bottom of the evaporation box through the defrosting brush, the liquid water sprayed by the first spray pipe can take away the frosting brushed off, the frost absorbs heat further when becoming the liquid water, the temperature of the liquid in the second spray pipe is reduced, the surface of the condenser can be cooled, when the temperature of the cooling water collected in the water collecting tray gradually rises during long-term use, the temperature of the liquid water in the second spray pipe is lower through the first pipeline and the first spray pipe, the condenser can be cooled, and the purposes of recycling the cooling water in the water collecting tray and reducing the waste of water resources are achieved. (2) The heat exchange tube is a bow-shaped tube, and openings at two ends of the bow-shaped tube of the heat exchanger are respectively connected with an air suction port and a throttle valve of the compressor through pipelines. The heat exchange tube includes straight tube and return bend, be equipped with on the straight tube radiating fin, radiating fin vertical fixation is in the surface of straight tube, the straight tube sets up side by side, the straight tube is at same horizontal plane, the vertical setting of radiating fin, when facilitating the use defrosting brush heat exchange tube and the frosting on the radiating fin, can make frosting directly fall into the hang plate of evaporation tank bottom on, avoid sheltering from, first fan setting is at the interior top of evaporation tank simultaneously, makes things convenient for wind to flow from the gap between heat exchange tube and radiating fin, makes things convenient for the heat transfer between air and the refrigerant that flows in the heat exchange tube, increases the work efficiency of this equipment. (3) The defrosting brushes are arranged in the gaps among the straight pipes, and the defrosting brushes are arranged among the straight pipes, so that the defrosting brushes are ensured to defrost comprehensively; the middle part of the brush hair of defrosting brush has the arc breach, the laminating of arc breach the straight tube, when just using, the brush head of defrosting brush can laminate straight tube and radiating fin, conveniently falls the frosting brush on heat exchange tube and the radiating fin, and the length of the brush head of defrosting brush is the same with the distance length at the upper and lower both ends of the radiating fin of both sides installation about the straight tube, makes things convenient for the defrosting brush when removing, and the brush head of defrosting brush can be comprehensive cleans frosting. And (4) the first pipeline penetrates through the side wall of the refrigeration house, enters the refrigeration house, penetrates into the evaporation box from the refrigeration house and is connected with the first spraying pipe. Preferably, the first conduit comprises a first coil disposed within the cold store. The cooling water in the water-collecting tray reduces the temperature through the first coil pipe of first pipeline in the freezer, the temperature that realizes the cooling water is lower, the cooling water of collecting in the assurance water-collecting tray can long-term recycle, reduce the waste of water resource, avoid long-term the use, when there is not the cooling, the cooling water temperature that collects in the water-collecting tray is unable condenser of cooling off more and more high, use the low temperature in the freezer to carry out the cooling of cooling water simultaneously, it cools down to reduce the catchment that increases the heat sink in to the water-collecting tray, thereby reduce and reduce the required energy consumption of cooling water temperature.

Drawings

Fig. 1 is a schematic structural diagram of a refrigeration house refrigeration device of the present invention;

FIG. 2 is a top view of a heat exchange tube and a heat dissipating fin of a refrigeration storage refrigeration equipment of the present invention;

fig. 3 is a schematic structural view of a defrosting brush of a refrigeration storage refrigeration device of the invention;

fig. 4 is a schematic structural diagram of a sliding device of a refrigeration storage refrigeration equipment.

Detailed Description

In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.

As shown in fig. 1, a refrigeration equipment for a cold storage, comprising a compressor 100, an evaporator 200, a condenser 300, a throttle valve 400 and a dry filter 500, wherein an air suction port of the compressor 100 is connected with the evaporator 200, an air outlet of the compressor 100 is connected with an inlet of the condenser 300 through a pipeline, an outlet of the condenser 300 is connected with the dry filter 500 through a pipeline, the dry filter 500 is connected with the evaporator 200 through a pipeline, the throttle valve 400 is arranged on a pipeline between the dry filter 500 and the evaporator 200, so that the successful operation of the whole refrigeration cycle of the refrigeration equipment is realized, the refrigeration equipment further comprises a main box 600 and an evaporation box 700, the compressor 100, the condenser 300, the throttle valve 400 and the dry filter 500 are arranged in the main box 600, the main box 600 is further provided with a first air outlet 610, so that the air permeability of the main box 600 is good, the temperature rise in the main box 600 caused by the operation of the condenser 300 in the main box 600 is reduced, affecting the quality of equipment operation. Evaporation case 700 is fixed at the freezer inboardly, main body case 600 sets up in the freezer outside, the below of condenser 300 still is equipped with water collector 620, first shower 710 is connected through first pipeline 630 to water collector 620, water pump 640 has on the first pipeline 630, first shower 710 sets up in the evaporation case 700, the bottom of evaporation case 700 has hang plate 720, the downside of hang plate 720 has running water mouth 730, the fixed second shower 650 of running water mouth 730, the downside of first shower 710 and second shower 650 is equipped with the shower nozzle, second shower 650 stretches into in the main body case 600, second shower 650 arranges in the top of condenser 300. When the water-cooled condenser is used, as the evaporator 200 works, water vapor in the air can be condensed into liquid water, the liquid water falls onto the inclined plate 720 and enters the second spraying pipe 650 together with water sprayed in the first spraying pipe 710, the liquid water is sprayed onto the condenser 300 through the second spraying pipe 650, the temperature of the condenser 300 is reduced, the water falls into the water collecting tray 620 after passing through the outer surface of the condenser 300, the water collected in the water collecting tray 620 is conveyed to the first spraying pipe 710 through the first pipeline 630 by the water pump 640 for spraying, the water recycling of the spraying and cooling condenser is realized, and the waste of water resources is reduced.

Evaporator 200 is fixed in the evaporating box 700, the upside of evaporating box 700 is for having the orifice plate, the inside wall of utensil orifice plate is fixed with first fan 740, still be equipped with second gas outlet 750 on the evaporating box, increase the velocity of flow that gets into the interior air of evaporating box 700 to increase the speed of air and evaporimeter contact, increase this device refrigeration efficiency, guarantee can rapid cooling in the freezer. The evaporator 200 comprises a heat exchange tube 210 and a heat radiating fin 220, a defrosting mechanism 800 is further arranged in the evaporation box 700, the defrosting mechanism 800 comprises a sliding device 810 and a defrosting brush 820, the defrosting brush 820 is fixed on the sliding device 810, and a brush head 821 of the defrosting brush 820 is attached to the heat exchange tube 210 and the heat radiating fin 220. The defrosting brush 820 moves along with the sliding device 810, so that when frost is formed on the heat exchange pipe 210 and the heat dissipation fins 220, the frost is brushed to the bottom of the evaporation tank 700 through the defrosting brush 820, the brushed frost is taken away by liquid water sprayed by the first spray pipe 710, the frost absorbs heat further when becoming liquid water, and the temperature of liquid entering the second spray pipe 650 is reduced, so that the surface of the condenser 300 can be cooled, and when the temperature of cooling water collected in the water collection tray 620 is gradually increased in long-term use, the temperature of the liquid water from the first pipeline 630 to the second spray pipe 650 through the first spray pipe 710 is lower, so that the condenser 300 can be cooled, and the purposes of recycling the cooling water in the water collection tray 620 and reducing waste of water resources are achieved.

Referring to fig. 1 and 2, the heat exchange tube 210 is a pipe with a bow shape, and openings at two ends of the pipe with a bow shape are respectively connected with the air suction port and the throttle valve of the compressor through pipes. The heat exchange tube 210 comprises a straight tube 211 and an elbow tube 212, the straight tube 211 is provided with the heat dissipation fins 220, the heat dissipation fins 220 are vertically fixed on the outer surface of the straight tube 211, the straight tubes 211 are arranged side by side, the straight tubes 211 are on the same horizontal plane, and the heat dissipation fins 220 are vertically arranged. When the defrosting brush 820 is conveniently used for brushing frosting on the heat exchange tube 210 and the radiating fins 220, the frosting can be directly fallen into the inclined plate at the bottom of the evaporation box 700 to avoid blocking, meanwhile, the first fan 740 is arranged at the inner top of the evaporation box 700, air can flow through the gap between the heat exchange tube 210 and the radiating fins 220, the air and heat transfer between the refrigerant flowing in the heat exchange tube are facilitated, and the working efficiency of the equipment is increased.

As shown in fig. 1 and 4, the sliding device 810 is disposed above the evaporator 200, the sliding device 810 includes a servo motor 811, a lead screw 812, a moving block 813 and a sliding shaft 814, the servo motor 811 is fixed in an evaporation box 700, an output shaft of the servo motor 811 fixes one end of the lead screw 812 through a coupling, the other end of the lead screw 812 is fixed on an inner wall of the evaporation box 700 through a bearing, both ends of the sliding shaft 814 are fixed on an inner wall of the evaporation box 700, directions of the sliding shaft 814 and the lead screw 812 are the same as a direction of a pipe of the straight pipe 211, as shown in fig. 3, the moving block 813 is provided with a first screw hole 815 and a first limit hole 816 through which the lead screw and the sliding shaft pass, the sliding shaft 814 and the first limit hole 816 can be correspondingly set to be two, the two sliding shafts 814 are disposed side by side and horizontally, the first screw hole 815 is matched with a thread of the lead screw 812, the defrosting brush 820 is fixed on the moving block 813. When the servo motor 811 of the sliding device 810 is started, the output shaft of the servo motor 811 rotates, so that the screw 812 is driven to rotate through the coupler, meanwhile, the moving block 813 is provided with the first screw hole 815 and the first limiting hole 816 for the screw 812 and the sliding shaft 814 to pass through, the sliding shaft 814 enables the moving block 813 not to rotate along with the screw, so that when the screw 812 rotates, the moving block 813 is driven to move left and right on the sliding shaft 814, the defrosting brush 820 on the moving block 814 is driven to move, the defrosting brush 820 is driven by the servo motor 811 to move back and forth, and frosting on the surfaces of the heat exchange tube 210 and the heat dissipation fin 220 is removed.

As shown in fig. 3, preferably, a first link 817 is fixed to the moving block 813, the first link 817 is horizontally disposed, the defrosting brush 820 is vertically fixed to the first link 817, in combination with fig. 2, the first link 817 and the straight pipes have mutually perpendicular pipe directions, the defrosting brush 820 is disposed in a gap between the straight pipes 211, and brush bristles are disposed on a brush head 821 of the defrosting brush 820 and attached to the heat exchange pipe 210 and the heat dissipation fins 220. And the defrosting brush 820 is arranged between every two straight pipes 211, so that the defrosting brush 820 can defrost comprehensively.

With reference to fig. 2 and 3, the middle of the bristles of the defrosting brush 820 is provided with an arc notch, the arc notch is attached to the straight tube, the defrosting brush 820 comprises an end brush 822 and a middle brush 823, one side of the brush head of the end brush 822 is provided with bristles, two sides of the brush head of the middle brush 823 are provided with bristles, the number of the middle brush 823 is less than that of the straight tube 211 by one, the end brushes 822 are two, the end brushes 822 are respectively fixed on the outer side of the middle brush 823, and the arc notches of the end brushes 822 are oppositely arranged. When the defrosting brush is convenient to use, the brush head 821 of the defrosting brush can be attached to the straight pipe 211 and the radiating fin 220, the defrosting brush on the heat exchange pipe 210 and the radiating fin 220 can fall down conveniently, as shown in fig. 1, the length of the brush head 821 of the defrosting brush is the same as the distance between the upper end and the lower end of the radiating fin 210 arranged on the upper side and the lower side of the straight pipe, and the brush head 821 of the defrosting brush 820 can clean and frost comprehensively when the defrosting brush 820 moves.

The first pipeline 630 penetrates through the side wall of the refrigeration house into the refrigeration house, penetrates into the evaporation box 700 from the refrigeration house and is connected with the first spraying pipe 710. Preferably, the first pipe 630 includes a first coil 631, and the first coil 631 is disposed in the cold store. The cooling water in the water-collecting tray 620 reduces the temperature in the freezer through the first coil pipe 631 of first pipeline 630, the temperature that realizes the cooling water is lower, the cooling water of collecting in the assurance water-collecting tray 620 can long-term cyclic utilization, reduce the waste of water resource, avoid long-term the use, when no cooling, the cooling water temperature that collects in the water-collecting tray 620 is higher and higher can't cool off condenser 300, use the low temperature in the freezer to carry out the cooling of cooling water simultaneously, it cools down to have avoided increasing the catchment of heat sink in the water-collecting tray 620, thereby reduce the required energy consumption of cooling water temperature.

Preferably, the top of the main body case 600 is a perforated plate, and the second fan 660 is fixed to the inner side of the perforated plate. Increase second fan 660, wind speed in the increase main part case 600 to can take away the heat in the main part case 600, avoid the interior intensification of main part case 600, simultaneously, combine to use between the cooling water that second fan 660 and second shower 650 sprayed, realize effectively cooling to condenser 300, have good cooling effect.

Preferably, a filter screen 900 is fixed to the upper surface of the perforated plate at the top of the evaporation box 600 and the main body box 700, respectively. Add filter screen 900, increase the cleanliness factor that gets into the gas in evaporating box 700 or the main body case 600, prevent that dust particle from entering into evaporating box 700 or the main body case 600 in for have the deposition in evaporating box 700 and the main body case 600, when cooling water circulation, make the water in the water-collecting tray 620 become muddy gradually, need change new clear water, thereby reduce the frequency of changing the water-collecting tray 620 internal water, reduce the waste of water resource.

Preferably, the first air outlet 610 and the second air outlet 750 fix a louvered door or a perforated plate. Will blow out from first gas outlet 610 and second gas outlet 750 and go out it homodisperse through shutter door or utensil orifice plate, also avoid first gas outlet 610 and second gas outlet 750 to have when sheltering from simultaneously, the device in evaporation case 700 and the main part case 600 exposes, causes the device to damage easily, guarantees that this equipment has longer life.

The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.

Claims (10)

1. The utility model provides a freezer refrigeration plant, includes compressor, evaporimeter, condenser, choke valve and drier-filter, the induction port of compressor is connected the evaporimeter, the gas outlet of compressor passes through the tube coupling the entry of condenser, the pipeline coupling drier-filter is passed through in the export of condenser, drier-filter passes through the tube coupling the evaporimeter, drier-filter with be equipped with choke valve, its characterized in that on the pipeline between the evaporimeter: the refrigeration system is characterized by further comprising a main body box and an evaporation box, wherein the compressor, the condenser, the throttle valve and the drying filter are arranged in the main body box, a first air outlet is further formed in the main body box, the evaporation box is fixed to the inner side of the refrigeration house, the main body box is arranged on the outer side of the refrigeration house, a water receiving disc is further arranged below the condenser and is connected with a first spray pipe through a first pipeline, a water pump is arranged on the first pipeline, the first spray pipe is arranged in the evaporation box, an inclined plate is arranged at the bottom of the evaporation box, a water flowing opening is formed in the lower side of the inclined plate, a second spray pipe is fixed to the water flowing opening and extends into the main body box, and the second spray pipe is arranged above the condenser; the evaporimeter is fixed in the evaporation case, the upside of evaporation case is for having the orifice plate, the inside wall of utensil orifice plate is fixed with first fan, still be equipped with the second gas outlet on the evaporation case, the evaporimeter includes heat exchange tube and radiating fin, still be equipped with defrosting mechanism in the evaporation case, defrosting mechanism includes slider and defrosting brush, defrosting brush is fixed slider is last, the brush head laminating of defrosting brush heat exchange tube and radiating fin.

2. The freezer refrigeration unit of claim 1, wherein: the heat exchange tube is a bow-shaped tube and comprises a straight tube and a bent tube, the straight tube is provided with the radiating fins, the radiating fins are vertically fixed on the outer surface of the straight tube, the straight tubes are arranged side by side, the straight tubes are on the same horizontal plane, and the radiating fins are vertically arranged.

3. The freezer refrigeration unit of claim 2, wherein: the utility model discloses a defrosting brush, including evaporimeter, gliding device, servo motor, lead screw, removal piece and slide-shaft, gliding device sets up the top of evaporimeter, gliding device includes servo motor, lead screw, moves piece and slide-shaft, servo motor fixes in the evaporation case, servo motor's output shaft passes through the shaft coupling to be fixed the one end of lead screw, the other end of lead screw passes through the bearing and connects to be fixed on the inner wall of evaporation case, the both ends of slide-shaft are fixed the inner wall of evaporation case, the slide-shaft with the direction of lead screw with the pipeline direction of straight tube is the same, it is equipped with the confession on the piece to move the lead screw with first screw and the first spacing hole that the slide-shaft passed, first screw with the screw-thread fit of lead screw, the defrosting brush is fixed move on the piece.

4. The freezer refrigeration unit of claim 3, wherein: move and be fixed with first connecting rod on the piece, first connecting rod level sets up, vertical fixed on the first connecting rod the defrosting brush, first connecting rod with the pipeline direction mutually perpendicular of straight tube, the defrosting brush sets up in the space between the straight tube, the brush hair has on the brush head of defrosting brush, the brush hair laminating is in heat exchange tube and radiating fin.

5. The freezer refrigeration unit of claim 4, wherein: the middle part of the brush hair of defrosting brush has the arc breach, the laminating of arc breach the straight tube, defrosting brush is including end brush and middle brush, the brush hair has on one side of the brush head of end brush, the brush head of middle brush is gone up both sides and all has the brush hair, the quantity of middle brush is compared straight tube one less in quantity, the end brush is two, the end brush is fixed respectively the outside of middle brush, two the arc breach of end brush sets up in opposite directions.

6. The freezer refrigeration unit of claim 1, wherein: the first pipeline penetrates through the side wall of the refrigeration house, enters the refrigeration house, penetrates into the evaporation box from the refrigeration house and is connected with the first spraying pipe.

7. The freezer refrigeration unit of claim 6, wherein: the first conduit includes a first coil disposed within the cold store.

8. The freezer refrigeration unit of claim 1, wherein: the top of the main body box is provided with a pore plate, and the inner side of the pore plate is fixed with a second fan.

9. The freezer refrigeration unit of claim 8, wherein: and filter screens are respectively fixed on the upper surfaces of the pore plates at the tops of the evaporation box and the main body box.

10. The freezer refrigeration unit of claim 1, wherein: the first air outlet and the second air outlet are fixed with louver doors or perforated plates.

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