CN2241851Y

CN2241851Y - Insulation refrigerating box

Info

Publication number: CN2241851Y
Application number: CN 95220161
Authority: CN
Inventors: 王子凯; 高智远; 赵保志; 薛翠玲
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-08-28
Filing date: 1995-08-28
Publication date: 1996-12-04
Anticipated expiration: 2005-08-28

Abstract

The utility model relates to an insulation refrigerating box. Each part of the box body adopts an airtight vacuum interlayer, and a superinsulation layer used to insulate the heat, such as a radiation shield, is arranged in the vacuum interlayer. The superinsulation layer reduces the heat leakage of the box body, reduces the heat consumption and prolongs the heat preservation and refrigeration time of the perishable goods. A refrigerating device uses a liquid nitrogen storage tank, and the liquid nitrogen is used as the refrigerating medium. The refrigerating effect can be improved, and the environmental pollution and the corrosion damage action can be stopped. The utility model can be used for the heat preservation refrigerated container, the box body of an insulated truck and other heat preservation refrigerated facilities.

Description

The insulation refrigerating box

The utility model relates to a kind of novel insulation refrigerating box, is mainly used in the insulation refrigeration of perishable, the particularly fresh-keeping and cold storage of perishable and freezing insulation in the transportation.

At present, the insulation refrigerating box series products of the world and domestic production, its casing is mostly for being made of inside and outside wall interlayer and the heat insulation layer that inserts and puts between inside and outside wall, and the conventional heat-insulating material of the many uses of heat insulation layer, as the foamed plastic thing, and this with the heat insulation adiabatic method of solid dielectric, because the conduction of the heat of solid itself, the heat conduction of radiant heat and gas molecule will cause sizable leakage heat, thereby the insulation level is relatively low.Simultaneously, be used for the cold-producing medium of refrigeration, what mainly adopt is fluorinated refrigerant (as R12, R22 etc.) or ammonia refrigerant.Fluorinated refrigerant is very big to the harm of atmospheric environment, has been subjected to the useful life restriction of International Institute or Refrigeration.And ammonia refrigerant has stronger corrosiveness and makes us insufferable stink equipment itself, thereby is difficult to be extensive use of.In addition the service life of this class refrigeration machine shorter, generally be no more than 2 years, and before its refrigeration of performance, must carry out tens and even tens hours storage cold-working industry with many special electric power circuits, bring a lot of restrictions and inconvenience to the user.

The purpose of this utility model is to provide a kind of leakage heat few, and heat-insulating property is good, environment is not polluted insulation refrigerating box easy to use.

At the problem that prior art exists, casing interlayer of the present utility model does not adopt the mode of solid dielectric layer thermal insulation, but has adopted the superadiabatic mode of airtight vacuum.Refrigerating plant has adopted the liquid nitrogen refrigerating mode, has solved many defectives that prior art exists.

Fig. 1 is the utility model general structure and embodiment schematic diagram.

Fig. 2 is the adiabatic cross-section structure of the utility model casing interlayer.

Fig. 3 is a liquid nitrogen storage tank schematic diagram.

Now doing one in conjunction with Fig. 1-3 pair of the utility model introduces in detail: basic structure of the present utility model as shown in Figure 1, be by inwall 1, the casing of the sandwich that outer wall 2 constitutes and by inwall 1, the interlayer chamber door 5 that outer wall 2 constitutes is formed, casing 9, the inwall 1 of chamber door 5, the interlayer that outer wall 2 is constituted is the airtight vacuum interlayer, its section structure as shown in Figure 2, in vacuum interlayer, be folded with unique thermosphere 3, unique thermosphere 3 is made of protective shield of radiation 10 and sept 11, its setting can be adopted the single or multiple lift structure, sept 11 is set between the multilayer protective shield of radiation 10 at interval, the effect of sept 11 is to prevent hot short circuit, protective shield of radiation 10 can adopt aluminium foil or other heat reflection foil, and sept 11 can adopt nylon wire.Because the interlayer that inwall 1, outer wall 2 constitute is a vacuum interlayer,, the plastics steel can be set betwixt supports for preventing inwall 1, outer wall 2 stress deformations.Under refrigeration refrigeration duty, liquid nitrogen storage tank 12 is set in casing, in liquid nitrogen storage tank 12 is arranged between the interior heat shielding at interval of casing, when needs freeze, by control device the pressure inlet that is connected with an outlet of liquid nitrogen storage tank 12 is connected, liquid nitrogen is through pressure inlet and connected radiating tube, when the liquid nitrogen cold is passed to goods, after volatilization is low temperature nitrogen, return-air mouth by liquid nitrogen storage tank 12 flows back to liquid nitrogen storage tank 12, pressure in it is increased, make liquid nitrogen export the woven hose of flowing through voluntarily by its another and flow into the evaporimeter 8 that is arranged in the insulation refrigerated cabinet, the temperature inside the box is reduced, when temperature in the casing reach set temperature after, temperature control equipment will cut out the pressure inlet of liquid nitrogen storage tank automatically, thereby stop to export liquid nitrogen, promptly finish a process of refrigerastion.Pressure inlet, radiating tube, woven hose and control assembly all should be installed in the casing rear portion, and fixing as a whole with casing.

Adopt the utility model that the adiabatic method of unique thermosphere is set in the vacuum tightness interlayer, its heat transfer coefficient is compared low 3-5 doubly than other Thermo Isolation Techniques, therefore can in the long time, transport fresh or the refrigerated perishable goods under the situation of no refrigeration plant, the application liquid nitrogen is become a reality as cold-producing medium, pure nitrogen gas behind the liquid nitrogen gasification is beneficial to the resting state that the interior goods of case is in cold and oxygen deficient, makes goods keep ortho states, primary colors and original flavor in considerable time.

A preferred embodiment of the present utility model is an insulation frozen products insulated container as shown in Figure 1, at the bottom of the left and right sidewall of casing, end wall, case top, the case and chamber door all be to form by corner structure, framework and 1,2 soldering and sealing of inside and outside wall.The casing interlayer adopts structure shown in Figure 2, and protective shield of radiation 10 adopts aluminium foil, and sept 11 is a nylon wire.The top is provided with evaporimeter 8 in casing, and for reducing thermal losses, chamber door end wall 16 of living in adopts the sinusoidal waveform rigid structure.Be provided with fork pockets in case bottom, for pallet fork pitch into.Chamber door 5 connects with casing by hinge 7, the tail gas cold energy reclamation device is set around the casing door frame, cold energy reclamation device is a special-shaped pipeline, it is arranged in the doorframe casing interlayer all around, its inlet is toroidal, be positioned on the cabinet wall, the another port of shape tube is positioned on the outer wall of casing.Because the casing internal-external temperature difference is bigger, the tail gas that needs to discharge still has certain cold to utilize, therefore the tail gas that the casing domestic demand is discharged is flowed through by the shape tube horn mouth and is discharged casing by the another port behind the shape tube, in tail gas stream during through shape tube, make the entrained cold of tail gas pass to the Lou sizable chamber door doorframe of pad portion by heat exchange, thereby the cold that will originally may run off is used to stop the chamber door undue inflow of heat all around.Set up antirust coat at cabinet exterior, on inwall, set up the stainless steel liner plate.In 4,4 have a side door 6 between heat shielding between the heat shielding that liquid nitrogen storage tank 12 is arranged on and chamber door 5 opposite end walls places are provided with.Liquid nitrogen storage tank 12 adopts structure shown in Figure 3, is fixed on the block by bearing 13, and being used to settle the control cabinet 15 of control device and 12 connections of liquid nitrogen storage tank is an integral body.

Adopt the utility model, make the thermal losses of insulation refrigerating box reduce 3-5 doubly, and do not have problem of environmental pollution, under the situation of no refrigeration plant, make the tempering storage time of fresh-keeping and reefer cargo obtain prolonging, be not subjected to the influence of extraneous power conditions simultaneously, and the cooling medium liquid nitrogen is taken from natural.Preparation easily, easy to use, with low cost, it not only can be used as insulated container and frozen products insulated container, the insulation refrigerated cabinet of thermal car and refrigerator car can be used for also that other are freezing, fresh-keeping or storage facility.

Claims

1, a kind of insulation refrigerating box, the interlayer chamber door that interlayer casing that casing is made of inwall, outer wall and inside and outside wall constitute is formed, between the inside and outside wall of casing, be provided with heat insulation layer, it is characterized in that the interlayer that the inside and outside wall of casing and chamber door constitutes is the airtight vacuum interlayer, in interlayer, be provided with unique thermosphere.

2, insulation refrigerating box according to claim 1 is characterized in that being provided with in the casing liquid nitrogen storage tank refrigerating plant, in refrigerating plant is arranged between the interior heat shielding at interval of casing.

3, insulation refrigerating box according to claim 1 and 2 is characterized in that unique thermosphere is mutual spaced multilayer protective shield of radiation in the casing interlayer.

4, insulation refrigerating box according to claim 1 and 2 is characterized in that being provided with between casing interlayer inwall, outer wall the plastics steel and supports.

5, insulation refrigerating box according to claim 1 and 2 is characterized in that the chamber door frame is provided with special-shaped pipeline in the interlayer all around.

6, insulation refrigerating box according to claim 1 and 2 is characterized in that the door side end wall is the sinusoidal waveform rigid structure.

7, insulation refrigerating box according to claim 3 is characterized in that being provided with between the protective shield of radiation sept.

8, insulation refrigerating box according to claim 3 is characterized in that protective shield of radiation is an aluminium foil.

9, insulation refrigerating box according to claim 7 is characterized in that sept is a nylon wire.