CN2033487U

CN2033487U - Vacuum chamber heat isolator of a refrigerator

Info

Publication number: CN2033487U
Application number: CN 88209370
Authority: CN
Inventors: 李芧华; 修德金; 刘承仁
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-08-04
Filing date: 1988-08-04
Publication date: 1989-03-01

Abstract

AThe utility model relates to a heat insulation device of a vacuum chamber type used for the heat insulation of the refrigerator, which is characterized in that the inner portion welded (or adhered) by boards forms a hollow cavity with a certain shape or capacity. The inner portion of the hollow cavity can be provided with a plurality of support posts (or robs) according to the requirements or the hollow cavity is sealed after evacuation. The device can be made into various combination blocks of a single component type and can also be made into the integration similar to the external dimension of the working chamber of a refrigerator body or the inner wall of an outer shell body. The utility model can be used for the heat insulation layer of various refrigerators and the energy loss passing through the layer can be reduced by more than 80%.

Description

The refrigerator vacuum room type insulation device

The utility model relates to the refrigeration field, is the further improvement of refrigerator and refrigerator technology.

Refrigerator is the small-sized integral type cold storage plant of extensive use, owing to constantly importing into of external heat, thereby needs the frequent starting refrigeration machine, and to keep the steady temperature in the refrigerator, this will consume more electric energy.In prior art, many preferable polyurethane foam plastics of heat-insulating property that adopt in housing are next heat insulation, and this material can satisfy the needs on the industrial production preferably, and effect also is good, but it still exists following shortcoming: 1. energy loss is big, and 2. equipment volume is big.In order to solve the deficiency of prior art, special the utility model solution that proposes.

Basic design of the present utility model is, reduce the thermal conductivity factor of thermal insulation layer to greatest extent, make it to be far smaller than 0.02 kilocalorie/meters per hour ℃, it is characterized in that, in the thermal insulation layer of casing and chamber door, be provided with vacuum room type insulation device (7), concrete feature is, vacuum room type insulation device (7) is the outer wall (1) that is become to have certain geometrical shape by sheet material seam (or bonding), its inner solid that forms a constant volume and shape, as rectangle, arc, various curved surfaces such as annular or with the cavity (3) of equipment operating room appearance similar, perhaps be designed to the cavity and the profile of other shapes on request, cavity (3) is evacuated, and (pressure is 1 * 10 ⁵～1 * 10 ^-9Handkerchief) back sealing, pressure in the general cavity (3) is less than 0.1 handkerchief, in order to improve the intensity of vacuum heat-insulation device, in cavity (3), can be provided with a plurality of support columns (or muscle) (2), the vacuum room type insulation device less for size or sheet material is thicker, look its situation and also support column (or muscle) (2) can be set, vacuum room type insulation device can make as required one similar to the outdoor shape of refrigerator work or to the inboard similar integral body of device housings, also can make several single piece bodies flexibly, in order to pass through pipeline, appropriate location on vacuum room type insulation device can be provided with one or several special hole (4) of certain size size.

Fig. 1 is the structural representation of vacuum room type insulation device.Fig. 1-a is the vacuum room type insulation device that is provided with support column (or muscle) (2) in the cavity (3), at the outer wall (1) that becomes to have certain geometrical shape by sheet material seam (or bonding), in its inner formed cavity (3), support column (2) is housed, Fig. 1-b does not install support column (or muscle) (2) in the cavity (3), and has the vacuum room type insulation device of special hole (4).

Fig. 2 is the specific embodiment of the utility model schematic diagram.

Describe CONSTRUCTED SPECIFICATION of the present utility model and application in detail below in conjunction with specific embodiment.

BY173 type simple gate direct-cooling type household electric refrigerator is installed vacuum room type insulation device.The outer wall of vacuum room type insulation device (1) is to form with the thick aluminium sheet seam of 3mm, be provided with the support column made from polystyrene (2) in the cavity (3), its size is φ 10mm * 24mm, support column (2) closely contacts with outer wall (1), and bonds with binding agent and outer wall (1), and the distance between the support column (2) is made as 100mm, the back seam is installed, vacuumize, seal when pressure is less than 0.1 handkerchief in cavity (3), qualified on inspection input assembling is used.

For easy construction, vacuum room type insulation device, can be designed to top, side, bottom, rear portion and anterior several sections, its size is as follows respectively: the casing top is a rectangle, its length is than the little 10mm of the inboard spacing of shell (5) before and after the casing, width is than the little 10mm of the inboard spacing of casing both sides shells (5), and thickness is 30mm; The casing both sides are rectangle, and its length is than casing top and the little 40mm of bottom enclosure (5) spacing, and width is than the little 10mm of the inboard spacing of shell (5) before and after the casing, and thickness is 30mm; The size of bottom half, its length is than the little 40mm of the inboard spacing of shell (5) before and after the casing, width is than the little 70mm of the inboard spacing of casing both sides shells (5), thickness is 30mm, its shape makes similar to operating room's base profile, the size at casing rear portion, its length than casing top and the inboard little 40mm width of bottom enclosure (5) than the little 70mm of the inboard spacing of casing both sides shells (5), thickness is 30mm, and top is provided with the special hole (4) of φ 16mm therein; The Qianmen is a rectangle, and its length is than chamber door top and the inboard little 10mm of bottom enclosure (5), and width is than the inboard little 10mm of its chamber door both sides shells (5), and thickness is 30mm.

Production technology is identical with prior art, just need vacuum room type insulation device (7) is fixed between shell (5) and the inner bag (8), filling polyurethane foam plastic filling bed (6) then, refrigeration is finished by compressor (10) and evaporimeter (9) and condenser (11).

The further improvement of refrigerator that vacuum room type insulation device is housed is to eliminate polyurethane foam plastic filling bed (6), and perhaps the shell of refrigerator (5) directly makes the shell of vacuum room type thermal insulation layer of the present utility model, so just can reduce the volume of refrigerator.

The energy loss that enforcement the utility model scheme can reduce by parietal layer reaches more than 80%.

The utility model also is applicable to the refrigerator technology.

Claims

1, the vacuum room type insulation device of the heat insulation usefulness of a kind of refrigerator, it is characterized in that, vacuum room type insulation device is the outer wall [1] that is become to have certain geometrical shape by sheet material seam (or bonding), its inside has the cavity [3] of definite shape and capacity, and with the be evacuated heat-proof device of back sealing of cavity [3].

2, vacuum room type insulation device according to claim 1 is characterized in that, also can be provided with plurality of support columns (or muscle) (2) in the cavity (3).

3, vacuum room type insulation device according to claim 1 is characterized in that, the pressure in the cavity (3) is 1 * 10 ⁵～1 * 10 ^-9Handkerchief is generally less than 0.1 handkerchief.

4, according to claim 1 or 2 or 3 described vacuum room type insulation devices, it is characterized in that, its geometry and size, the needs that can be adapted to the casing thermal insulation layer are made other shapes of rectangle, arc or similar casing operating room's profile or like device shell inboard, can make whole shape or several single piece bodies by the size of casing thermal insulation layer.