CN2754032Y

CN2754032Y - Portable environmental-protection electric refrigerator

Info

Publication number: CN2754032Y
Application number: CN 200420103116
Authority: CN
Inventors: 张向萍; 游飞越
Original assignee: Guangdong Kelong Electrical Appliances Co Ltd
Current assignee: Guangdong Kelong Electrical Appliances Co Ltd
Priority date: 2004-12-17
Filing date: 2004-12-17
Publication date: 2006-01-25
Anticipated expiration: 2014-12-17

Abstract

The utility model discloses a portable environmental-protection electric refrigerator, which comprises an adiabatic cavity body, a refrigeration system providing cold to the adiabatic cavity body, and a controller causing the refrigeration system to work, wherein the adiabatic cavity body comprises an outer shell, an inner bag and a heat insulation layer between the outer shell and the inner bag. The outer shell and the heat insulation layer are formed from integrative EPP foam layers. The utility model uses EPP environmental protection foam material to replace PU foam material for refrigerator bodies and door bodies at present, provides a portable and practical electric refrigerator with superior heat insulating property and simple fabrication process, and solves the defect of complicated fabrication process of the adiabatic cavity of the refrigerator at present. The utility model has the advantages of light weight and high productive efficiency, and can be widely used for refrigerator products of various models, particularly semiconductor refrigerators.

Description

A kind of light environment-friendly type refrigerator

Technical field

The utility model relates to the refrigerator technical field, more particularly relates to a kind of light environment-friendly type refrigerator.

Background technology

At present, the body structure of refrigerator mainly is made of top layer, middle foaming layer and plastics inner bag, no matter be large refrigerator or semiconductor mini-bar, its casing all is to make the top layer shell earlier with steel plate or plastics, be assembled into a hollow cavity with the plastics inner bag then, in the chamber, water the refrigerator body of the middle heat-insulation layer of PU expanded material foaming becoming band again.The door body also be by door face board and the door inner bag assemble, in add the PU foaming layer.The PU foaming layer has good heat-insulating property, but shortcoming is to absorb water, and insufficient strength and appearance are coarse can not to replace metal or the independent shell as a whole of plastic surface layer, make the technology of refrigerator body make comparatively complexity of flow process, operation is cumbersome, and used material category is many, and refrigerator reclaims difficulty.

The utility model content

The technical problems to be solved in the utility model is, replaces the material of present refrigerator body and door foaming with a kind of expanded material of environmental protection, provides that a kind of heat-insulating property is good, manufacturing process is simple, the refrigerator of light practicality, to overcome the deficiencies in the prior art.

Solution of the above problems is such: a kind of light environment-friendly type refrigerator is provided, comprise heat insultating cavity, the refrigeration system of cold be provided and make the controller of refrigeration system work to heat insultating cavity, described heat insultating cavity comprises shell, inner bag and the heat-insulation layer between shell and inner bag, and described shell and heat-insulation layer are made of incorporate EPP foaming layer.

In the above-mentioned light environment-friendly type refrigerator, described shell, inner bag and the heat-insulation layer between shell and inner bag are made of incorporate EPP foaming layer.

In the above-mentioned light environment-friendly type refrigerator, described refrigerator is the semiconductor refrigerating refrigerator.

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

1) with the heat insultating cavity mould that only need foam that comprises refrigerator body and door body of EPP expanded material manufacturing,, can save the making mould of metal or plastic surface layer with respect to the refrigerator that uses the PU foaming; Casing that the EPP material is made and door body can directly enter the general assembly operation, save production cost, equipment cost, cost of labor, die cost and corresponding management cost on the one hand, and the simplification of operation makes the refrigerator qualification rate rise constant product quality on the other hand.

2) EPP material itself is the high foaming material material, need not to re-use, and problem is steeped in the leakage of having avoided causing because of foaming, steeps the case of reprocessing that causes thereby avoided leaking, and has reduced the quantity of the defective case in the production process simultaneously.

3) adopt the weight of EPP material foaming back refrigerator greatly to reduce, refrigerator is light, be easy to move.

4) the EPP material is a kind of material of very environmental protection, does not have any noxious material, and it is also convenient to reclaim.

Description of drawings

Fig. 1 is a refrigerator upper box processing process schematic diagram of the present utility model;

Fig. 2 is a refrigerator structure schematic diagram of the present utility model.

The specific embodiment

At present, the lagging casing of semiconductor freezer is with metal or frosting protective layer and housing that had both had suitable rigid and heat-insulating property of PU polyurethane material foaming formation, in actual production, the foam process difficulty of casing and door body is big, control to bubble material deal requires accurately, leaks bubble easily; And the general volume of semiconductor freezer is little, and the requirement that is easy to carry about with one is arranged more, thus the design of refrigerator with light for well.EPP (being expanded polypropylene) material is emerging a kind of environment-friendly materials, 1985 by Kaneka company utility model, its expansion ratio can be from 5 times until 45 times, can the multiple density of moulding and the product of shape, finished product adiabatic coefficent scope after its foaming is wide, and EPP foaming finished product has a large amount of closed-cell foam structure, and product absorbs water hardly and has good heat endurance, is suitable for the heat insulation layer as refrigerator.In addition, EPP foaming toughness is very strong, and the moulding product have very high hardness, good chemically-resistant character, and have good surface appearance, but substituted metal or plastic surface layer directly support as the shell of refrigerator.

Make semi-conductive refrigerator with the EPP material following step is arranged, at first make the body of thermal insulating box and the door body of semiconductor freezer of the EPP material, assemble fin, cooling piece then on casing, cross semiconductor cooling device parts and control device parts such as cold, fan, power panel, refilling to the doorstep, body is assembled into the EPP semiconductor freezer.

Now make the process of semiconductor casing, door body with the EPP material, mainly comprise following step: particle filled composite, Steam Heating, water cooling and stable, the demoulding, post curing referring to Fig. 1 explanation.Specify below:

1, particle filled composite

Utilize filling seam mode that EPP is particle-filled between foaming mould punch core rod 3 and the die die cavity 5.This process has three steps: pre-blowing mould, filler, blowback.In the incipient stage of mould motion, mould forwards at a slow speed to reserve the granular zone of filling the EPP particle more earlier with closed at a high speed.Afterwards, the feeding port of loading pipe 7 is opened.High pressure is filled gas and is entered mould from feeding port.The purpose of pre-blowing is that the water of remnants and material piece are discharged from granular zone.When pre-blowing is finished, just can filler, at this moment, filling gas is at a high speed discharged from the ventilating opening (not shown) of granular zone, can (core on the mould make the material district form vacuum or negative pressure to make granular zone form negative pressure?).Particle is inhaled in the granular zone.High-speed air carries particle and enters the mould from the material road.The granular zone inner air is discharged from core and ventilating opening on core rod and the die cavity.After filler is finished, the feeding port closed pneumatic, filling gas returns away, is being with particle to get back in the storage tank.

2, Steam Heating

Filled after the particle, logical Steam Heating in mould, the process of logical steam provides heat so that particle expands and welding to mould and particle.On the one hand, the air that the energy of steam adds hot particle inside makes its expansion, and excellent contact is provided when welding, on the other hand, also can melt particle surface, and the surface is fused to together.Logical steam course comprised for three steps: pre-steam also makes punch die stage, crosscut steam phase, two-sided steam also cry the main steam stage.After end-of-fill, mould is closed fully to compress inner particle, and in die process, steam valve 8 is opened to punch vaporium 1 and die vaporium 4 delivering vapors, and the gas in two vaporiums (and residual water) is discharged by outlet valve 9; In the crosscut steam phase, with one of them of the steam valve 8 of punch and die close, another then opens, for outlet valve 9, then be one open, another closes.For example: close the steam valve of punch, open draining valve, the drain shut valve of die, steam valve is opened, and makes steam pass core 10 from die vaporium 4 like this and enters granular zone, passes the interparticle slit of granular zone and discharges from the outlet valve of punch.Its effect is that interparticle air is blown out from outlet valve, adds hot particle and mould simultaneously, and prepares for final steam feeds, and by this process, particle is softened and begins and progressively expands; In two-sided steam phase, steam valve 8 is opened, and all the other valves, ventilating opening are all closed, and only stays core 10 and enters into unique passage in the mould as steam from air chamber, and this moment, particle further expand into the net shape of mould.

3, water cooling and stable

After vapor recycle finished, foam was hard not enough and in strong expansion.Therefore, must before foam ejects mould, use and guarantee enough cool times and stabilization time dimensional stability.Comprise pre-cooled, water cooling, three steps of stablizing.The steam of pre-cooled main condensed steam chamber 1 and 4 li to be to reduce pressure, avoids when outlet valve 9 is opened high steam to remove rapidly; Cooling tube 2 is with the surface spraying of cold water to core rod 3 and die cavity 5, to reduce the temperature of mould and EPP foam during water cooling; After cool cycles finished, foam-formed product need a bit of time of stop in mould of EPP stablized, and allows foam temperature further reduce.

4, the demoulding

After water cooling and stable the finishing, the moulding product are ejected mould by push rod 6 from mould.

5, post curing

It is to place 16～36 hours in 70 ℃～85 ℃ the drying shed that the moulding product are placed on temperature, makes the moulding product dry and aging, and the size of fixed-type product is also removed moisture.Rule of thumb, Zui Jia slaking placement condition is: placed 24 hours in 70 ℃ drying shed.

Referring to Fig. 2, the casing 11 of semiconductor freezer adopts the lagging casing of EPP foaming layer as refrigerator, is shelf bar 12 in casing, the installation site of label 13 expression fans and fin.The door body 14 of semiconductor freezer also is to adopt the EPP foaming layer as lagging casing, the door sealing groove in the label 15 expression door bodies.

Casing and the door body of manufacturing semiconductor freezer with the EPP material are well selections.It reduces the use kind of material the first, adding the PU froth bed by steel plate or plastic side panel, to be kept to the EPP material a kind of, even inner bag can be replaced in the lump, the door body also be by door face board, that the PU foaming layer is kept to the EPP material is a kind of, perhaps the door inner bag is replaced in the lump, owing to use material category few, therefore reclaim to get up to be easy to; It two is the very environmental protection of EPP material, can not produce any toxic gas; It three is the heat-insulation layer that adopts EPP the to make semiconductor freezer shells of holding concurrently, and can cancel side plate, the back plate of refrigerator and strengthen support component, and refrigerator weight is greatly alleviated, and is convenient for people to move; And, then save operation, artificial, mold materials, equipment and management cost for manufacturer, and fundamentally stopped owing to leak the waste product that bubble causes, percent defective significantly reduces.

Claims

1. light environment-friendly type refrigerator, comprise heat insultating cavity, the refrigeration system of cold be provided and make the controller of refrigeration system work to heat insultating cavity, described heat insultating cavity comprises shell, inner bag and the heat-insulation layer between shell and inner bag, it is characterized in that: described shell and described heat-insulation layer are made of incorporate EPP foaming layer.

2. light environment-friendly type refrigerator according to claim 1 is characterized in that: described shell, described inner bag and the heat-insulation layer between described shell and described inner bag are made of incorporate EPP foaming layer.

3. light environment-friendly type refrigerator according to claim 1 and 2 is characterized in that: described refrigerator is the semiconductor refrigerating refrigerator.