Air flow increasing structure for low-temperature test box

Abstract

The utility model provides an air flow increasing structure for a low-temperature test box, which belongs to the technical field of low-temperature test boxes and comprises a test box structure, the test box structure comprises a box body and a cover plate, a flow speed increasing mechanism is arranged in the box body and detachably connected with the box body, and the flow speed increasing mechanism comprises a wind wheel rotating part. The wind wheel rotating part comprises a barrel and blades, the blades are arranged on the outer wall of the barrel at equal intervals in a surrounding mode, and a molecular sieve module is arranged in the barrel. By means of the low-temperature test box, in the using process of the low-temperature test box, temperature balance in the box can be guaranteed, air is promoted to flow, and circulating air flow is formed; low-temperature cold air is uniformly distributed to each corner of the box body, so that the condition of non-uniform temperature is avoided, the temperature balance is achieved, the temperature difference of different positions in the test box can be reduced, a test sample is tested in a relatively consistent low-temperature environment, and the accuracy and reliability of a test result are improved.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to the technical field of low temperature test box, concretely is a kind of low temperature test box with increase air flow structure. BACKGROUND

[0002] Low temperature test box is a kind of equipment for simulating low temperature environment, and the low temperature performance test of product or material, and main component includes cabinet, refrigeration system, temperature control system, observation window and sample holder, and working principle is based on reverse Carnot cycle, and the compressor in refrigeration system is compressed into high-temperature high-pressure gas, then is cooled into high-pressure liquid by condenser heat dissipation, and high-pressure liquid is throttled after passing through expansion valve, and enters evaporator, and is evaporated into low-temperature low-pressure gas in evaporator, to absorb the heat in the box, so that the temperature in the box is reduced, and the refrigerant gas after evaporation is sucked into compressor again, and circulates, to realize continuous refrigeration.

[0003] At present, in the process of using low temperature test box, temperature stratification phenomenon appears in the box, the temperature of the area close to refrigeration source is lower, and the temperature of the area far from refrigeration source is higher, the position of test sample is different, and the temperature suffered is also different, which can cause large deviation of test result, and cannot accurately reflect the performance of sample under specific low temperature condition, and the air around test sample can form relatively static boundary layer, to hinder the heat transfer, and the time of sample to reach low temperature state is prolonged, not only increase test cost, but also can affect the normal test, for example, when some low-temperature sensitive materials are tested, the long cooling time can change the performance of materials, to affect the accuracy of test. UTILITY MODEL CONTENTS

[0004] The utility model technical scheme provides significantly different solution from prior art for the technical problem that prior art solution is too single, and specifically, the utility model mainly provides a kind of low temperature test box with increase air flow structure to solve the technical problem that temperature stratification phenomenon appears in the box in the process of using low temperature test box in the above background art, and due to uneven temperature and unstable heat exchange efficiency, the repeatability of test result is poor, and reliable basis cannot be provided for product research and development and quality control.

[0005] The utility model solves the above technical problem by the technical scheme that

[0006] The utility model provides a low temperature test box with air flow increasing structure, including test box structure, the test box structure includes the box and the cover, and the box and the cover are hinged, be provided with flow rate promotion mechanism in the box, and flow rate promotion mechanism and the box are detachably connected, flow rate promotion mechanism includes wind wheel rotation piece, the wind wheel rotation piece includes cylinder and blade, and the blade is equidistantly surrounded and set in the outer wall of cylinder, and the cylinder is provided with molecular sieve module.

[0007] Further, the flow rate promotion mechanism further comprises a motor, and the motor is installed on one side of the outer wall of the box through bolts.

[0008] Further, one end of the cylinder is provided with an interface, and the interface is connected with the output end of the motor.

[0009] Further, a threaded cover is connected with the opening of the cylinder.

[0010] Further, a reinforcing rib in annular structure is arranged between each blade.

[0011] Further, an installation hole is arranged at the top of the side wall of the box, and the interface of the cylinder passes through the installation hole.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The wind wheel rotation piece, the cylinder, the blade, the reinforcing rib, the interface, the cover and the motor are arranged, so that the temperature uniformity in the box can be ensured during the use of the low temperature test box, the air flow is promoted, the circulating air flow is formed, the low temperature cold air is uniformly distributed to each corner of the box, the temperature unevenness is avoided, the temperature balance is achieved, the temperature difference of different positions in the test box is reduced, the test sample is tested in the relatively consistent low temperature environment, the accuracy and reliability of the test result are improved, the heat exchange speed is accelerated, the test period is shortened, the test efficiency is improved, the molecular sieve module is arranged, the test sample sensitive to humidity, such as electronic components and metal products, is effectively prevented from condensing moisture on the surface in the humid environment in the box, short circuit, corrosion and other problems are caused, and the performance of the sample and the accuracy of the test result are affected.

[0014] The utility model will be explained in detail in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is the whole structure schematic diagram of the utility model;

[0016] Fig. 2 It is the box and the cover structure schematic diagram of the utility model;

[0017] Fig. 3 The utility model discloses a flow rate promotion mechanism structure schematic diagram.

[0018] In the drawing: 1, test box structure, 11, box, 12, cover plate, 111, mounting hole, 2, flow rate promotion mechanism, 21, wind wheel rotating piece, 221, cylinder, 222, blade, 223, reinforcing rib, 224, interface, 23, molecular sieve module, 24, cover, 25, motor. DETAILED DESCRIPTION

[0019] In order to facilitate understanding the utility model, below will be more comprehensive description of the utility model with reference to relevant drawings, the drawings show several embodiments of the utility model, but the utility model can be realized by different forms, and is not limited to the embodiments described in the text, on the contrary, provide these embodiments are for making the disclosed content of the utility model more thorough and comprehensive.

[0020] It needs to be explained that when an element is called "fixed to" another element, it can be directly on another element or there can be a central element, when an element is considered "connected" to another element, it can be directly connected to another element or there can be a central element, the terms "vertical", "horizontal", "left", "right" and similar expressions used in this paper are only for illustrative purposes.

[0021] Unless otherwise defined, all technical and scientific terms used in this paper are the same as the meaning commonly connected by the person skilled in the art belonging to the technical field of the utility model, the terms used in the specification of the utility model in this paper are for the purpose of describing specific embodiments, not intended to limit the utility model, the term "and / or" used in this paper includes any and all combinations of one or more related listed items.

[0022] Please refer to the drawings Figs. 1-3 A kind of air flow structure for increasing low temperature test chamber, including test box structure 1, the test box structure 1 includes box 11 and cover plate 12, box 11 and cover plate 12 are hinged, flow rate promotion mechanism 2 is arranged in the box 11, flow rate promotion mechanism 2 and box 11 are detachably connected, the flow rate promotion mechanism 2 includes wind wheel rotating piece 21, the wind wheel rotating piece 21 includes cylinder 221 and blade 222, and blade 222 is equidistantly arranged around the outer wall of cylinder 221, the outer wall of cylinder 221 is hollow, molecular sieve module 23 is arranged in the cylinder 221, the molecular sieve module 23 is a kind of silicate crystal with uniform microporous structure, its pore size is uniform, can be selectively adsorbed according to the size and shape of molecule, the adsorption capacity of molecular sieve to moisture is very strong, especially under low humidity condition still can maintain high adsorption efficiency, it has good thermal stability and chemical stability.

[0023] Through the above structure, the temperature uniformity in the box can be ensured during the use of the low temperature test box, the air flow is promoted, the circulating air flow is formed, the low temperature cold air is uniformly distributed to each corner of the box body 11, the temperature unevenness is avoided, the temperature balance is achieved, the temperature difference of different positions in the test box is reduced, the test sample is tested in a more consistent low temperature environment, the accuracy and reliability of the test result are improved, the heat exchange speed is accelerated, the test period is shortened, and the test efficiency is improved.

[0024] Specific operation as follows, in the low temperature test of the test sample, open the motor 25, the motor 25 drives the wind wheel rotating part 21 to rotate, the air flow in the box body 11 can be accelerated, the circulating air flow is formed, the low temperature cold air is uniformly distributed to each corner of the box body 11, the temperature unevenness is avoided, the flowing air will pass through the molecular sieve module 23 in the cylinder body 221, the molecular sieve module 23 will adsorb the moisture in the air, and the function of drying the air in the box body 11 is achieved.

[0025] Please refer to the accompanying drawings Fig. 2 and the accompanying drawings Fig. 3 , the flow rate improving mechanism 2 further comprises a motor 25, the motor 25 is installed on the outer wall of the box body 11 by bolts, one end of the cylinder body 221 is provided with an interface 224, and the interface 224 is connected with the output end of the motor 25, through the motor 25, the driving force for the rotation of the wind wheel rotating part 21 is provided, the opening of the cylinder body 221 is threadedly connected with a cover 24, through the cover 24, the molecular sieve module 23 is installed in the cylinder body 221, so that the molecular sieve module 23 is not separated from the cylinder body 221 during the rotation of the wind wheel rotating part 21, the reinforcing ribs 223 of annular structure are arranged between each of the blades 222, through the reinforcing ribs 223, the stability of the blades 222 during rotation is improved, the mounting hole 111 is arranged at the top of the side wall of the box body 11, and the interface 224 of the cylinder body 221 penetrates through the mounting hole 111, through the mounting hole 111, the space for the installation of the wind wheel rotating part 21 is provided, and the wind wheel rotating part 21 is installed at the top of the inner cavity of the box body 11, so as to utilize the principle of hot air rising, the hot air will flow upwards, and the cold air will sink downwards, the wind wheel rotating part 21 is installed on the upper side of the inner wall, the natural convection principle can be utilized to form good air circulation, which is helpful to maintain the uniformity of the temperature in the box.

[0026] The utility model has carried out the exemplary description to the utility model in the above-mentioned combination drawing, obviously the utility model concrete realization is not limited by above-mentioned mode, only if the method conception and technical scheme of the utility model have been used to carry out this kind of non-essential improvement, or the conception and technical scheme of the utility model are directly applied to other occasions without improvement, all are within the protection scope of the utility model.

Claims

1. A structure for increasing airflow in a low-temperature test chamber, comprising a test chamber structure (1), said test chamber structure (1) comprising a chamber body (11) and a cover plate (12), wherein the chamber body (11) and the cover plate (12) are hinged together, characterized in that, The box (11) is provided with a flow rate lifting mechanism (2), and the flow rate lifting mechanism (2) and the box (11) are detachably connected. The flow rate lifting mechanism (2) includes a wind turbine rotating component (21), which includes a cylinder (221) and blades (222). The blades (222) are evenly spaced around the outer wall of the cylinder (221). A molecular sieve module (23) is provided inside the cylinder (221).

2. The airflow enhancement structure for a low-temperature test chamber according to claim 1, characterized in that, The flow rate lifting mechanism (2) also includes a motor (25), which is bolted to one side of the outer wall of the housing (11).

3. The airflow enhancement structure for a low-temperature test chamber according to claim 2, characterized in that, One end of the cylinder (221) is provided with an interface (224), and the interface (224) is connected to the output end of the motor (25).

4. The airflow enhancement structure for a low-temperature test chamber according to claim 3, characterized in that, The opening of the cylinder (221) is threaded with a cap (24).

5. The airflow enhancement structure for a low-temperature test chamber according to claim 1, characterized in that, Each blade (222) is provided with a ring-shaped reinforcing rib (223).

6. The airflow enhancement structure for a low-temperature test chamber according to claim 4, characterized in that, The top of the side wall of the box (11) is provided with a mounting hole (111), and the interface (224) of the cylinder (221) passes through the mounting hole (111).

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