CN2449158Y

CN2449158Y - Pipe-plate type evaporator with auxiliary cold accumulator

Info

Publication number: CN2449158Y
Application number: CN00258009U
Authority: CN
Inventors: 叶加鼎
Original assignee: Cryogenic Laboratory of CAS
Current assignee: Key Laboratory of Cryogenics of CAS
Priority date: 2000-10-24
Filing date: 2000-10-24
Publication date: 2001-09-19
Anticipated expiration: 2010-10-24

Abstract

The utility model relates to the refrigerating technology of a pipe and board type evaporator added on a cold accumulation pipe, which is suitable for a refrigerating device of a refrigerator, a cryogenic box, an electric freezing cabinet, a cold beverage device, an ice-cream device, a small refrigerator of a discontinuous type, etc. The aim of the pipe and board type evaporator added on the cold accumulation pipe is to reduce running power consumption as well as production cost. The evaporator comprises an evaporating board 1, an evaporating pipe 2, a flat cold accumulation pipe 3, a cold accumulation medium 4, a heat conductive adhesive 5, an aluminum foil adhesive tape 6, stamping double fins 7 arranged on the evaporating board, and a stamping hole 8 arranged on the evaporating board. The utility model reduces the running energy consumption for the refrigerating device, and is favorable for a user. The utility model simplifies the debugging structure of the different refrigerating evaporators for the ice chamber of the refrigerator, and reduces production cost.

Description

The tube-sheet type evaporimeter of additional cold accumulator

The utility model relates to Refrigeration Technique, is applicable to refrigeration plants such as refrigerator, cryogenic box, ice box, cold drink machine, Ice-cream machine and discontinuous small-sized refrigerator.

The evaporimeter of commercially available direct-cooling type refrigeration plant is divided into tube-sheet type, inflation type (aluminum composite plate formula) and threaded pipe type three major types.Its structure all is that evaporation tube or passage are installed on evaporation plate basically.Especially aluminium tube-sheet type evaporimeter is stung tightly because of aluminum pipe only relies on the dipteron that stamps out from aluminium sheet, aluminum pipe often occurs and twitches phenomenon, and the thermo-contact that results between aluminium sheet and the aluminum pipe is bad, produces 2 ℃-3 ℃ heat transfer temperature difference.Like this, one comes energy consumption for cooling to become big, and two each layer cold house heat transfer boundary conditions are variant, and promptly thermic load has nothing in common with each other.This simple structure, every layer of evaporation plate physical dimension is all identical, and promptly the refrigerating capacity ability is basic identical.This causes each layer temperature difference, and the temperature in general intermediate layer is minimum.Refrigeration machine when shutting down or the discontinuous refrigeration machine in the period at intermittence, thermal capacitance evaporimeter less than normal also almost stops refrigeration simultaneously; Be in operation, because big each layer temperature inequality of heat transfer temperature difference, and reach the GB temperature for every layer, refrigeration machine must spend more energy consumption.

The purpose of this utility model is to reduce operation energy consumption, again the tube-sheet type evaporimeter of the additional cold accumulator that can reduce production costs.

The purpose of this utility model is achieved in that

A kind of tube-sheet type evaporimeter of additional cold accumulator, comprise the evaporation tube on evaporation plate and the plate thereof, it is characterized in that the both sides of stinging tight evaporation tube at described evaporation plate punching press dipteron, the flat cold accumulator of pasting with heat-conducting glue, and cover in the layer of aluminum foil belt of evaporation plate, evaporation tube and cold accumulator general surface with heat-conducting glue.

Inject cool storage medium in the described cold accumulator.

In conjunction with the accompanying drawings, further specify the utility model content.

Fig. 1 the utility model sectional structure chart.

Fig. 2 the utility model vertical view.

Among the figure

1 evaporation plate, 2 evaporation tubes

3 flat cold accumulator 4 cool storage mediums

5 heat-conducting glues, 6 aluminum foil and adhesive tapes

7 in the punching hole of punching press dipteron 8 on evaporation plate on the evaporation plate

Fig. 1 is the utility model sectional structure chart.The utility model evaporimeter comprises the punching press dipteron 7 on evaporation plate 1, evaporation tube 2, flat cold accumulator 3, cool storage medium 4, heat-conducting glue 5, aluminum foil and adhesive tape 6, the evaporation plate, the punching hole 8 on the evaporation plate; In the both sides that described evaporation plate punching press dipteron 7 is stung tight evaporation tube 2, the flat cold accumulator of pasting with heat-conducting glue 53, and be covered on layer of aluminum foil belt 6 on evaporation plate 1, evaporation tube 2 and flat cold accumulator 3 general surface with heat-conducting glue 5; Evaporation plate 1 has stayed corresponding punching hole 8 after stamping out dipteron 7.

Fig. 2 is the utility model vertical view.This figure illustrates the overall picture of overlooking of the utility model evaporation tube sheet.It comprises evaporation plate and top evaporation tube 2 thereof, flat cold accumulator 3, and evaporation plate on punching 8.Usually, each evaporimeter is by 2 to 5 overlapping forming of such evaporation tube sheet.

Operation principle:

Usually refrigeration plant has compressor, condenser, throttle capillary tube and evaporimeter four major parts.Refrigerant becomes the gaseous state absorption refrigeration by liquid state in evaporimeter, become liquid heat release by gaseous state and be back to evaporimeter through throttle capillary tube afterwards in condenser.Suck by compressor again; Throttle capillary tube plays step-down, cooling effect.The Zhou Erfu that moves in circles freezes pastly.

The refrigerating capacity part of evaporimeter is by evaporation tube and evaporation plate refrigeration, and another part is absorbed by cool storage medium in cold accumulator and the pipe thereof.No matter be the sensible heat material or the cool storage medium of phase-change material, shut down or period at intermittence of intermitten service, emit cold and offset hot or other thermic load with Louing at refrigeration machine, up to refrigeration machine start once again enter the new refrigeration work cycle till.In a word, heat sink cold accumulator itself does not consume energy, and can reduce the temperature difference that refrigeration machine whole system refrigeration is conducted heat, and system-wide thereupon entropy increases decline.The shutdown period of refrigeration machine whole refrigeration on the cycle the shared period longer, heat transfer temperature difference is low more, energy-saving effect is obvious more.Such as, when the cryogenic temperature load was-25 ℃, then the every rising of evaporator temperature was 1 ℃, then can save energy 5%-6%.

By the way, cold-storage sensible heat material comprises organic reagent solution such as sodium chloride, calcium chloride water or ethylene glycol, ethanol, propane diols; Phase-change material except the sensible heat material as the phase-change material, also have carbon tetrachloride, adjacent benzene dichloride, phenmethylol, ortho-aminotoluene, organic substance and cold-producing medium R30 such as dimethylacetylamide, its proportioning can be formed separately, also can multiple assembly; Phase-change material is selected 0 to-90 ℃ of phase transition temperatures.In addition, in refrigeration machine was produced, the difference of multilayer icehouse heat transfer edges circle condition was only regulated with the quantity of every layer of increase and decrease cold accumulator with the length of the flat cold accumulator of plus-minus.

The utility model advantage:

1. the refrigerator operation Energy Intensity Reduction is beneficial to the user.

2. simplified the debugging structure of the different icehouse refrigeration evaporator of refrigeration machine device, reduced producing This.

3. reduced the angle evaporimeter of icehouse.

Claims

1. the tube-sheet type evaporimeter of an additional cold accumulator, comprise the evaporation tube on evaporation plate and the plate thereof, it is characterized in that the both sides of stinging tight evaporation tube at described evaporation plate punching press dipteron, the flat cold accumulator of pasting with heat-conducting glue, and cover in the layer of aluminum foil belt of evaporation plate, evaporation tube and cold accumulator general surface with heat-conducting glue.

2. evaporimeter according to claim 1 is characterized in that injecting in the described cold accumulator cool storage medium.