CN2890046Y

CN2890046Y - Vacuum glass with built-in getter

Info

Publication number: CN2890046Y
Application number: CN 200620004076
Authority: CN
Inventors: 何世廉; 刘嘉; 董镛
Original assignee: 何世廉
Priority date: 2006-02-20
Filing date: 2006-02-20
Publication date: 2007-04-18
Anticipated expiration: 2016-02-20

Abstract

The utility model discloses a vacuum glass with built-in getter. The inner surfaces of the top and bottom glasses of the vacuum glass are provided with spherical or continuous curved grooves, the inside the grooves are provided with a built-in getter, the getter adopts point contact or line contact with the glass surface, the getter is flaky or ring shape with holes. The getter of the utility model is easy to be activated by high frequency, which guarantees the vacuum glass receives the minimum heating impact under the activationary temperature, and dose not produce micro-crack as well as heating crack. The groove is provided with curved faces, which can eliminate the concentration of the corner stress of the angular grooves and reduce the weakening of glass strength from the grooves.

Description

The vacuum glass of built-in getter

Technical field

The utility model relates to a kind of transparent, heat-insulation and heat-preservation, sound damping vacuum glass, relates in particular to a kind of vacuum glass of built-in getter, belongs to glass deep processing field.

Background technology

Vacuum glass is essentially a static vacuum device, and the vacuum tightness of device inside just is the decision device performance and the key factor in life-span.Vacuum glass stands the effect repeatedly of sunshine, the temperature difference, pressure reduction in secular use, the surface venting in the vacuum chamber, diffusion are given vent to anger and other seepage etc. will exist all the time and finally cause vacuum glass degradation and even inefficacy.

In vacuum glass, put getter, be equivalent to put a nonvolatil chemical vacuum pump, can keep the pressure in the vacuum chamber to be lower than 0.1Pa for a long time, promptly keep the excellent properties of vacuum glass to remain unchanged for a long period of time or change minimum.

Have structure and the method that multinomial patent proposes various placement getters at present both at home and abroad.China Patent No. for example: 02253930.1 and the patent No.: 01275879.5 discloses the vacuum glass and the getter of band getter respectively, it is the groove that on two sheet glass up and down, is provided with flat right angle, bight in the right angle groove can produce stress concentration like this, cause glass intensity to weaken, in groove, place getter, when the getter activated at,, burst, perhaps produce tiny crack to cause glass because the infringement that the glass local superheating causes is very big.

Summary of the invention

In order to solve the problem of above-mentioned existence, but having provided a kind of getter moment high frequency, the purpose of this utility model activates, the vacuum glass of the little built-in getter of the thermal shocking of glass.

The technical solution of the utility model is achieved in that a kind of vacuum glass of built-in getter, constitute vacuum glass up and down the internal surface of two or a sheet glass offer the groove of sphere or continuous curve surface, in groove, put getter.

The degree of depth of groove is less than 1/2 of thickness of glass.

Groove can be opened in bleeding point below.

Getter contacts or the line contact for point with glass surface in groove.

Described getter is with holes laminar, and the peripheral shape of thin slice is circle or Polygons, and the quantity in hole is one or more, and the aperture is not limit.

Described getter also can be ring-type.

Compared with prior art, the beneficial effects of the utility model are:

1, getter contacts for point or line transmission of heat by contact resistance maximum with glass surface, the porous shape is easy to high frequency and activates, and can finish in the several seconds, can guarantee the vacuum glass thermal shocking minimum that (850 ℃-900 ℃) are subjected under activationary temperature, can not produce tiny crack, more can not produce heat and burst.

2, the groove of offering is a curved surface, eliminates the bight stress concentration that the angle groove is arranged, and alleviates the weakening of groove to strength of glass as far as possible.

3, getter relies on surface adsorption gas, and the curved surface groove is to the minimum of covering on getter surface, and the diffusion admittance of gas is more unobstructed.

4, the curved surface groove arrangement will help to reduce the flow resistance that vacuumizes below bleeding point, shorten the pumpdown time.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the getter structural representation;

Fig. 3 is the getter structural representation;

Fig. 4 is the getter structural representation.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail, but not as to qualification of the present utility model.

As shown in Figure 1, the vacuum glass of built-in getter, comprise sheet glass 5, following sheet glass 6, groove 1 and getter 2, offer the groove 1 of continuous curve surface at the internal surface of two sheet glass up and down, storing laminar getter 2 with holes groove 1 in, the peripheral shape of getter 2 thin slices is circle or Polygons, also be distributed with ramuscule post 7 between two sheet glass, have aspirating hole 10 on the last sheet glass 5, extraction pipe 3 is housed on the aspirating hole 10, seal with glass powder with low melting point 4 between extraction pipe 3 and the last sheet glass.Offer curved surface groove 1 on the following sheet glass 6 of aspirating hole 10 correspondences, be placed with getter 2 in the groove 1, getter 2 contacts or the line contact for point with glass surface in groove 1.

As shown in Figure 2, getter 2 is a thin rounded flakes, is that getter 2 is compressed on the circular metal carrier 8, has hole 9 on thin slice.

As shown in Figure 3, getter 2 is circular, is that getter 2 is compressed in the ring groove of circular metallic carrier 8.

As shown in Figure 4, getter 2 is the Polygons thin slice, and getter 2 is compressed on the Polygons metallic carrier 8, has hole 9 on thin slice.

Claims

1, the vacuum glass of built-in getter, constitute vacuum glass up and down the internal surface of two or a sheet glass offer the groove of sphere or continuous curve surface, in groove, put getter.

2, the vacuum glass of built-in getter according to claim 1, the degree of depth that it is characterized in that described groove is less than 1/2 of thickness of glass.

3, the vacuum glass of built-in getter according to claim 1 and 2, it is characterized in that described groove be opened in bleeding point below.

4, the vacuum glass of built-in getter according to claim 1 is characterized in that described getter contacts or the line contact for point with glass surface in groove.

5, the vacuum glass of built-in getter according to claim 1 is characterized in that described getter is with holes laminar, and the peripheral shape of thin slice is circle or Polygons.

6, the vacuum glass of built-in getter according to claim 1 is characterized in that described getter is a ring-type.