Temperature and humidity test box

Abstract

The utility model discloses a temperature and humidity test box. The temperature and humidity test box comprises a box body and a humidifying box, an air duct cabin and an environment cabin which are adjacent to each other are arranged in the box body, a circulating fan is arranged at the top of the air duct cabin, a heater and a refrigeration evaporator are arranged in front of an air outlet of the circulating fan, and an air inlet and an air outlet which are communicated with the air duct cabin and the environment cabin are arranged between the air duct cabin and the environment cabin; an equipment arrangement space is arranged in the humidification box, a humidification water tank is arranged in the equipment arrangement space, a humidifier is inserted in the humidification water tank, a humidifier controller is installed in the equipment arrangement space, the equipment arrangement space is connected with the air duct cabin through a humidification pipeline, and a proportional analog quantity valve is arranged on the humidification pipeline. The temperature and humidity test box disclosed by the utility model is reasonable in structural design, high in control precision, good in constant temperature / constant humidity effect, high in humidity increasing efficiency, good in humidity stability and good in application prospect.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental testing equipment, in particular to a temperature and humidity testing box, and in particular to a temperature and humidity testing box using a steam humidification system. Background Art

[0002] The temperature and humidity test chamber can also be called an environmental test chamber or a constant temperature and humidity chamber, a constant temperature and humidity test chamber. It can simulate various temperature and humidity environments and is suitable for testing electronic, electrical appliances, food, automobiles, rubber, plastic glue, metal and other products. It meets the parameters of reliability and stability performance in various harsh environments of GB / T2423, GJB150A1 / 4, and will provide a basis for predicting and improving product quality and reliability. The current temperature and humidity test chamber has the following problems: 1) The humidity rise time is long; 2) The humidity stability is poor; 3) The humidity stability cycle is long; 4) The steam input cannot be controlled during the humidity operation process, and the humidity can only be adjusted by controlling the water temperature to control the water evaporation rate, that is, when the humidity rises, the temperature will rise, which brings difficulties to the temperature and humidity control of the test chamber.

[0003] Therefore, it is of great practical significance to develop a temperature and humidity test chamber with high control accuracy, good constant temperature / humidity effect, high humidity rising efficiency and good humidity stability. Utility Model Content

[0004] Due to the above-mentioned defects in the prior art, the utility model provides a temperature and humidity test chamber with high control accuracy, good constant temperature / humidity effect, high humidification efficiency and good humidity stability. Specifically, it is a temperature and humidity test chamber using a steam humidification system to solve the problems of long humidification time, poor humidity stability, long humidity stabilization period and difficult temperature and humidity control in the existing temperature and humidity test chambers.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A temperature and humidity test box, comprising a box body and a humidifying box;

[0007] The box body is provided with an air duct cabin and an environmental cabin adjacent to each other, a circulating fan is installed on the top of the air duct cabin, a heater and a refrigeration evaporator are installed in front of the air outlet of the circulating fan, and an air inlet and outlet hole connecting the air duct cabin and the environmental cabin are provided between the air duct cabin and the environmental cabin to form a circulating air path between the air duct cabin and the environmental cabin;

[0008] An equipment layout space is provided in the humidification box, a humidification water tank is provided in the equipment layout space, a humidifier is installed in the humidification water tank, a humidifier is installed in the humidification water tank, a humidifier controller is installed in the equipment layout space, the humidifier is electrically connected to the humidifier controller, the equipment layout space is connected to the air duct cabin through a humidification pipe, and a proportional analog valve is provided on the humidification pipe.

[0009] The temperature and humidity test chamber of the utility model has a humidifying device in which pressurized humidifying steam can be input into the air duct cabin, and the humidity has good stability and uniformity; the humidity can be controlled by a proportional analog valve on the humidifying pipeline, so that the environmental cabin can be kept within a constant temperature range, and the mutual influence of temperature and humidity control can be avoided; the humidity in the chamber can be controlled by controlling the input amount of humidifying steam through a humidifier controller and a proportional analog valve, and the temperature of the environmental cabin is less affected, and the humidity adjustment speed is fast, the adjustment is smooth, and the fluctuation amplitude is small, thereby shortening the humidity stabilization time, saving the test cycle, greatly improving the production efficiency, and having a good application prospect.

[0010] As the preferred technical solution:

[0011] In the temperature and humidity test chamber as described above, the environmental chamber is provided with an environmental chamber door away from the air duct chamber side.

[0012] In the temperature and humidity test box as described above, a control panel is installed on the box body, and the control panel is electrically connected to the circulation fan, the heater, the refrigeration evaporator, the humidifier controller and the proportional analog valve.

[0013] In the temperature and humidity test box as described above, a plurality of box feet are installed at the bottom of the box body and the humidifying box.

[0014] In the temperature and humidity test box as described above, the heater and the refrigeration evaporator are both arranged horizontally and installed between the air inlet and outlet holes.

[0015] In the temperature and humidity test box as described above, the box body and the humidification box are fixedly connected or independent of each other.

[0016] The above technical solution is only a feasible technical solution of the present utility model, and the protection scope of the present utility model is not limited thereto. Those skilled in the art can reasonably adjust the specific design according to actual needs.

[0017] Compared with the prior art, the above utility model has the following advantages or beneficial effects:

[0018] (1) The temperature and humidity test chamber of the utility model, the humidifying device in the humidifying chamber can input pressurized humidifying steam into the air duct cabin, and the humidity stability and uniformity are good;

[0019] (2) In the temperature and humidity test chamber of the utility model, the humidity can be controlled by a proportional analog valve on the humidification pipe, so that the environmental chamber is kept within a constant temperature range, avoiding the mutual influence of temperature and humidity control;

[0020] (3) The temperature and humidity test chamber of the utility model can control the humidity in the chamber by controlling the input amount of humidifying steam through the humidifier controller and the proportional analog valve. It has little impact on the temperature of the environmental chamber, and the humidity can be adjusted quickly and smoothly with small fluctuations, thereby shortening the humidity stabilization time, saving the test cycle, greatly improving production efficiency, and having good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and the emphasis is on illustrating the subject matter of the present invention.

[0022] Figure 1 It is a structural schematic diagram of the temperature and humidity test box of the utility model;

[0023] Among them, 1-control panel; 2-environmental chamber; 3-circulating fan; 4-heater; 5-refrigeration evaporator; 6-humidification box; 7-box base; 8-humidifier controller; 9-humidifier; 10-humidification water tank; 11-humidification pipeline; 12-proportional analog valve. DETAILED DESCRIPTION

[0024] The structure of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0025] Example 1

[0026] A temperature and humidity test chamber, such as Figure 1 As shown, it includes a box body and a humidifying box 6, and the box body and the humidifying box 6 are fixedly connected or independent of each other;

[0027] An air duct cabin and an environmental cabin 2 adjacent to each other are arranged in the box body, a circulating fan 3 is installed on the top of the air duct cabin, a heater 4 and a refrigeration evaporator 5 are installed in front of the air outlet of the circulating fan 3, an air inlet and an air outlet hole connecting the air duct cabin and the environmental cabin 2 are arranged between the air duct cabin and the environmental cabin 2, the heater 4 and the refrigeration evaporator 5 are arranged horizontally and the heater 4 and the refrigeration evaporator 5 are installed between the air inlet and the air outlet hole, an environmental cabin door is provided on the side of the environmental cabin away from the air duct cabin, a control panel 1 is installed on the box body, and the control panel 1 is electrically connected to the circulating fan 3, the heater 4, the refrigeration evaporator 5, the humidifier controller 8 and the proportional analog valve 12;

[0028] An equipment layout space is provided in the humidification box 6, a humidification water tank 10 is provided in the equipment layout space, a humidification water tank 10 is inserted in the humidification water tank 10, a humidifier 9 is installed in the equipment layout space, the humidifier 9 is electrically connected to the humidifier controller 8, the equipment layout space is connected to the air duct cabin through a humidification pipe 11, and a proportional analog valve 12 is provided on the humidification pipe 11;

[0029] A plurality of box feet 7 are arranged at the bottom of the box body and the humidifying box 6 .

[0030] In summary, the present application provides a temperature and humidity test chamber, in which the humidifying device can input pressurized humidifying steam into the air duct cabin, and the humidity has good stability and uniformity; the humidity can be controlled by the proportional analog valve on the humidifying pipeline, so that the environmental chamber can be kept within a constant temperature range, avoiding the mutual influence of temperature and humidity control; the humidity in the chamber can be controlled by controlling the input amount of humidifying steam through the humidifier controller and the proportional analog valve, which has little effect on the temperature of the environmental chamber, and the humidity adjustment speed is fast, the adjustment is smooth and the fluctuation range is small, thereby shortening the humidity stabilization time, saving the test cycle, greatly improving production efficiency, and having good application prospects.

[0031] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present utility model, and will not be described in detail here.

[0032] The above describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the above-mentioned specific implementation methods, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the utility model without departing from the scope of the technical solution of the utility model, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. A temperature and humidity test chamber, characterized in that: It includes a box body and a humidifying box; The box body is provided with an air duct cabin and an environmental cabin adjacent to each other, a circulating fan is installed on the top of the air duct cabin, a heater and a refrigeration evaporator are installed in front of the air outlet of the circulating fan, and an air inlet and outlet hole connecting the air duct cabin and the environmental cabin are provided between the air duct cabin and the environmental cabin; An equipment layout space is provided in the humidification box, a humidification water tank is provided in the equipment layout space, a humidifier is installed in the humidification water tank, a humidifier is installed in the humidification water tank, a humidifier controller is installed in the equipment layout space, the humidifier is electrically connected to the humidifier controller, the equipment layout space is connected to the air duct cabin through a humidification pipe, and a proportional analog valve is provided on the humidification pipe.

2. A temperature and humidity test chamber according to claim 1, characterized in that: The environmental cabin is provided with an environmental cabin door on the side away from the air duct cabin.

3. A temperature and humidity test chamber according to claim 1, characterized in that: A control panel is installed on the box body, and the control panel is electrically connected with the circulation fan, the heater, the refrigeration evaporator, the humidifier controller and the proportional analog valve.

4. A temperature and humidity test box according to claim 1, characterized in that: A plurality of box feet are arranged at the bottom of the box body and the humidifying box.

5. A temperature and humidity test box according to claim 1, characterized in that: The heater and the refrigeration evaporator are both arranged horizontally and installed between the air inlet and outlet holes.

6. A temperature and humidity test box according to claim 1, characterized in that: The box body and the humidification box are fixedly connected or independent of each other.

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