CN110586206A

CN110586206A - Miniature high low temperature test box

Info

Publication number: CN110586206A
Application number: CN201810912401.2A
Authority: CN
Inventors: 刘仕技; 赖剑勇
Original assignee: GUANGZHOU ETOMA ENVIRONMENT INSTRUMENT CO Ltd
Current assignee: GUANGZHOU ETOMA ENVIRONMENT INSTRUMENT CO Ltd
Priority date: 2018-08-11
Filing date: 2018-08-11
Publication date: 2019-12-20

Abstract

The invention discloses a miniature high-low temperature test box which comprises a base and a box body, wherein a motor is arranged in the base, the box body is fixed above the base, a connecting rod is arranged at the output end of the motor, the connecting rod penetrates through the box body to be connected with stirring blades, two sides of the bottom in the box body are respectively provided with a refrigerating unit, the inner wall of the periphery of the box body is embedded with a heating unit, a sample rack is arranged in the box body, a box door is arranged above the box body, and a handle is arranged above the box door. The invention adopts the semiconductor refrigeration piece for refrigeration, has the volume of less than 30 liters, small volume, light weight, convenient movement, portability, suitability for vehicle-mounted use, extremely low noise and no pollution.

Description

Miniature high low temperature test box

Technical Field

The invention relates to the technical field of test boxes, in particular to a mini high-low temperature test box.

Background

The high-low temperature test box is a reliability test device suitable for high temperature and low temperature of industrial products. The performance indexes of parts and materials of related products such as electronics, electricians, automobiles, motorcycles, aerospace, ships, weapons, universities, research institutions and the like are tested under the condition of high temperature and low temperature (alternating) cyclic change.

At present, the volume of a high-low temperature test box in the market is over 60 liters generally, and the high-low temperature test box is large in size, heavy in weight and inconvenient to move, carry and carry on a vehicle. In addition, the use of compressors and freon refrigerants tends to produce loud noises and cause environmental pollution.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a miniature high-low temperature test box which is small in size, light in weight and convenient to move.

Preferably, the refrigeration unit is a semiconductor refrigeration piece.

Preferably, the heating unit is a heating belt.

Preferably, the door has a convex structure, and the lower part and the upper part of the door are large.

Preferably, a circle of sealing rubber strips is arranged below the box door.

Preferably, the motor is a brushless dc motor.

The sealing rubber strip is a hollow rubber strip made of silica gel material

The invention has the beneficial effects that:

1. the invention adopts the semiconductor refrigeration piece for refrigeration, has simple structure, convenient operation, no moving part, safety, reliability, small volume, light weight, convenient movement, portability, suitability for vehicle-mounted use, extremely low noise and no refrigerant pollution.

2. The hollow rubber strip made of the silica gel material enables the box door to have higher mechanical strength, long service life, good thermal stability and high and low temperature resistance, can be used in a wide temperature range (-70 ℃ -300 ℃), has little change with temperature regardless of chemical properties or physical and mechanical properties, and has good sealing performance.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the door of the present invention;

fig. 3 is a schematic structural view of a sample holder according to the present invention.

In the figure: 1. a handle; 2. a box door; 3. a box body; 4. a sample holder; 5. a stirring fan blade; 6. a refrigeration unit; 7. a connecting rod; 8. a motor; 9. a base; 10. a heating unit; 11. and sealing rubber strips.

Detailed Description

Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

As shown in fig. 1-3, a miniature high-low temperature test chamber comprises a base 9 and a chamber 3, a motor 8 is installed inside the base 9, the motor 8 is a brushless dc motor, the motor has small volume, light weight, large output force, vibration resistance, low noise, small vibration, smooth operation and long service life, the chamber 3 is fixed above the base 9, a connecting rod 7 is installed at the output end of the motor 8, the connecting rod 7 passes through the chamber 3 to be connected with a stirring fan blade 5, the refrigerating units 6 are respectively installed at two sides of the bottom inside the chamber 3, the refrigerating units 6 are semiconductor refrigerating sheets which are special cold sources, do not need any refrigerant, can continuously work, have no pollution source and rotating component, do not generate a rotation effect, do not have sliding component, do not have vibration, noise and long service life when working, are easy to install, and a heating unit 10 is embedded in the peripheral inner wall of the chamber 3, the heating unit 10 is a heating belt, the heating belt mainly comprises an electric heating material, an insulating material and the like, the electric heating material is a nichrome belt, the heating speed is high, the heat efficiency is high, the service life is long, the insulating material is multilayer alkali-free glass fiber and has good temperature resistance and reliable insulating property, a sample rack 4 is arranged inside the box body 3, a box door 2 is arranged above the box body 3, the box door 2 is of a convex structure, the lower part and the upper part of the box door are large, a circle of sealing rubber strip 11 is arranged below the box door 2, and the sealing rubber strip 11 is a hollow rubber strip made of silica gel materials, so that the box door has high mechanical strength, long service life, good thermal stability and high and low temperature resistance, and can be used within a wide temperature range of-70 ℃ to 300 ℃. The sealing rubber strip 11 with good sealing performance is a hollow rubber strip made of silica gel materials, and a handle 1 is arranged above the box door 2.

The working principle of the specific embodiment is as follows: when doing the high temperature test, the power disconnection of refrigerating unit 6, heating unit 10's switch-on, the heating tape generates heat and gives the air heating in the box, and simultaneously, the motor operation, thereby drive stirring fan blade 5 and rotate, stir the mixture to the air in the box, make sample frame 4 on the sample ambient air temperature rise rapidly, until accomplishing the experiment, when doing the low temperature test, refrigerating unit 6's switch-on, heating unit 10's switch-on, semiconductor refrigeration piece refrigerates the air in the box, and simultaneously, the motor operation, thereby drive stirring fan blade 5 and rotate, stir the mixture to the air in the box, make sample frame on the sample ambient air temperature descend rapidly, until accomplishing the experiment.

The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.

Claims

1. The utility model provides a miniature high low temperature test box, includes base (9) and box (3), its characterized in that: base (9) internally mounted has motor (8), base (9) top is fixed with box (3), connecting rod (7) are installed to the output of motor (8), connecting rod (7) pass box (3) and are connected with stirring fan blade (5), refrigeration unit (6) are installed respectively to the inside bottom both sides of box (3), box (3) inner wall has inlayed heating unit (10) all around, box (3) internally mounted has sample frame (4), box (3) top is provided with chamber door (2), handle (1) is installed to chamber door (2) top.

2. The miniature high and low temperature test chamber of claim 1, wherein: the refrigerating unit (6) is a semiconductor refrigerating sheet.

3. The miniature high and low temperature test chamber of claim 1, wherein: the heating unit (10) is a heating belt.

4. The miniature high and low temperature test chamber of claim 1, wherein: the box door (2) is of a convex structure, and the lower part and the upper part of the box door are large.

5. The miniature high and low temperature test chamber of claim 1, wherein: and a circle of sealing rubber strip (11) is arranged below the box door (2).

6. The miniature high and low temperature test chamber of claim 1, wherein: the motor (8) is a brushless direct current motor.

7. The miniature high and low temperature test chamber of claim 5, wherein: the sealing rubber strip (11) is a hollow rubber strip made of a silica gel material.