CN114700119A

CN114700119A - Double-air-duct environmental test box

Info

Publication number: CN114700119A
Application number: CN202210381576.1A
Authority: CN
Inventors: 邓献奇; 李小春; 王飞鹏
Original assignee: Guangdong Dawen Energy Saving Testing Equipment Co ltd
Current assignee: Guangdong Dawen Energy Saving Testing Equipment Co ltd
Priority date: 2022-04-13
Filing date: 2022-04-13
Publication date: 2022-07-05

Abstract

The invention discloses a double-air-duct environment test box, which comprises: the test box comprises a test box main body, wherein the test box main body comprises a working cavity, a cooling air channel and a warming air channel, the working cavity is arranged on one side of the test box main body, and the cooling air channel and the warming air channel are arranged on the other side of the test box main body. And both ends of the cooling air duct and both ends of the heating air duct are respectively communicated with the working cavity. The test box main part still includes heater, water-cooling heat transfer system and cooling system, and wherein, heater and water-cooling heat transfer system set up in rising temperature wind channel, and cooling system sets up in the wind channel of cooling down. According to the double-air-channel environmental test box, the temperature rising and reducing air channel of the traditional test box is divided into the temperature rising air channel and the temperature reducing air channel which are mutually isolated, so that the temperature rising process and the temperature reducing process of the test box can be carried out through the corresponding independent air channels.

Description

Double-air-duct environmental test box

Technical Field

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

Background

The high-low temperature test equipment is mainly used for carrying out environmental simulation tests on physical and other related characteristics of products under low temperature, high temperature and various conditions according to the requirements of national standards or the requirements of users. After the test, whether the performance of the product can still meet the preset requirement can be preliminarily judged, and the method is mainly used for product design, improvement, identification and factory inspection. And the high-low temperature environment test box is used for simulating the environment of physical and other relevant characteristics under low temperature, high temperature and various conditions. The test box is according to certain high low temperature circulation operation when normal use, and the temperature process of going up and down all uses same wind channel to go on usually, has devices such as evaporimeter, heater, fan in the wind channel.

The single wind channel design of current environmental test case has leaded to all needing to heat up the refrigeration evaporimeter every time and also heaied up to the high temperature value the same with the box needs, has increased the energy consumption of heater, and during the cooling, the evaporimeter also begins the cooling from high temperature, and the energy consumption of compressor when also having increaseed the cooling simultaneously.

Disclosure of Invention

Therefore, a double-air-duct environmental test box is needed to be provided for solving the technical problem that the existing single-air-duct environmental test box is unnecessarily high in energy consumption in the temperature rising and falling process.

The utility model provides a two wind channel environmental test case, this two wind channel environmental test case includes the test box main part, and the test box main part includes work cavity, cooling wind channel and intensification wind channel, and wherein, the work cavity sets up in one side of test box main part, and cooling wind channel and intensification wind channel all set up in the opposite side of test box main part. And both ends of the cooling air duct and both ends of the heating air duct are respectively communicated with the working cavity.

The test box main part still includes heater, water-cooling heat transfer system and cooling system, and wherein, heater and water-cooling heat transfer system set up in rising temperature wind channel, and cooling system sets up in the wind channel of cooling down.

In one embodiment, the working cavity comprises a test cavity, an air outlet, an air return cavity and an air return opening, and the test cavity is arranged on one side of the test box main body; the air outlet cavity is arranged at the top of the test box main body and is communicated with the test cavity through an air outlet; the air return cavity is arranged at the bottom of the test box main body and is communicated with the test cavity through an air return opening.

In one embodiment, the cooling air duct and the warming air duct are respectively disposed between the air outlet cavity and the air return cavity, and two ends of the cooling air duct and two ends of the warming air duct are respectively connected to the air outlet cavity and the air return cavity.

In one embodiment, the air outlet cavity is provided with a circulating fan, and the circulating fan is arranged at the air outlet.

In one embodiment, a first electric valve and a second electric valve are respectively disposed at two ends of the warming air duct, the first electric valve is disposed at a connection port between the warming air duct and the air outlet cavity, and the second electric valve is disposed at a connection port between the warming air duct and the air return cavity.

In one embodiment, the heater is installed in the warming air duct, and the air flow direction of the heater perpendicular to the warming air duct is disposed between the first electrically operated valve and the second electrically operated valve.

In one embodiment, the water-cooling heat exchange system includes a water-cooling heat exchanger, a water pump and an air-cooling heat exchanger; the water-cooled heat exchanger is arranged in the warming air duct, and the parallel heater of the water-cooled heat exchanger is arranged at one side close to the second electric valve; the water pump and the air-cooled heat exchanger are arranged outside the warming air duct.

In one embodiment, the output end of the water-cooling heat exchanger, the air-cooling heat exchanger, the water pump and the input end of the water-cooling heat exchanger are sequentially connected through a pipeline, the input end of the water pump is connected with the air-cooling heat exchanger, and the output end of the water pump is connected with the input end of the water-cooling heat exchanger.

In one embodiment, a third electric valve and a fourth electric valve are respectively disposed at two ends of the cooling air duct, the third electric valve is disposed at a connection port between the cooling air duct and the air outlet cavity, and the fourth electric valve is disposed at a connection port between the cooling air duct and the air return cavity.

In one embodiment, the cooling system includes a compressor, a condenser, a throttle valve, and an evaporator, the evaporator is disposed in the cooling air duct, and an airflow direction of the evaporator perpendicular to the cooling air duct is disposed between the third electric valve and the fourth electric valve; the compressor, the condenser and the throttle valve are arranged outside the cooling air duct.

In one embodiment, the output end of the evaporator, the compressor, the condenser, the throttle valve, and the input end of the evaporator are sequentially connected through a pipeline, wherein a medium in the pipeline sequentially flows from the compressor, the condenser, and the throttle valve to the evaporator through the input end of the evaporator, and then flows back to the compressor through the output end of the evaporator.

In summary, the dual-air-channel environmental test chamber disclosed by the invention divides the temperature-rising air channel of the traditional test chamber into the temperature-rising air channel and the temperature-lowering air channel which are isolated from each other, so that the temperature-rising process and the temperature-lowering process of the test chamber can be performed through the corresponding independent air channels. The test box can select to switch between intensification wind channel and the cooling wind channel according to the inside temperature demand of working chamber, cut off the connection with another wind channel when selecting to correspond the wind channel to effectively saved the energy consumption that traditional test box rose the temperature to the wind channel inside at the temperature rising and dropping in-process, also improved the inside temperature rising and dropping efficiency of working chamber here simultaneously. In addition, the double-channel environmental test box is additionally provided with the water-cooling heat exchange system, when the inside of the working cavity is subjected to high constant temperature, part of test products can release heat, so that the internal constant temperature environment is damaged, and the water-cooling heat exchange system can be started to carry out water-cooling as required. Compared with the compressor refrigeration of the traditional test box, the water-cooling heat exchanger can maintain the constant temperature inside the working cavity with extremely low energy consumption, so that the energy consumption of the test box in the high-temperature constant-temperature process is further reduced.

Drawings

FIG. 1 is a schematic diagram of a dual tunnel environmental test chamber according to one embodiment;

FIG. 2 is a schematic structural diagram of a dual-duct environmental test chamber according to an embodiment.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 and 2, the invention discloses a double-air-duct environmental test chamber, which includes a test chamber main body 1, the test chamber main body 1 includes a working chamber 11, a cooling air duct 12 and a heating air duct 13, wherein the working chamber 11 is disposed on one side of the test chamber main body 1, and the cooling air duct 12 and the heating air duct 13 are disposed on the other side of the test chamber main body 1. Moreover, two ends of the cooling air duct 12 and two ends of the warming air duct 13 are respectively communicated with the working cavity 11. In this embodiment, the heating operation and the cooling operation of the working chamber 11 are respectively and independently performed by the heating air duct 13 and the cooling air duct 12. When the working cavity 11 needs to be heated, the heating air duct 13 independently heats the working cavity 11, and the environment in the cooling air duct 12 does not need to be synchronously heated, so that the energy consumption of the working cavity 11 in the heating process is reduced; when the working cavity 11 needs to be cooled, the cooling air duct 12 independently cools the working cavity 11, and the environment in the heating air duct 13 does not need to be synchronously cooled, so that the energy consumption of the working cavity 11 in the cooling process is reduced.

Referring to fig. 1 and 2, further, the working chamber 11 includes a test chamber 111, an air outlet chamber 112, an air outlet 113, a return air chamber 114, and a return air inlet 115. Wherein, the test cavity 111 is arranged at one side of the test box main body 1; the air outlet cavity 112 is arranged at the top of the test box main body 1 and is communicated with the test cavity 111 through an air outlet 113; the air return chamber 114 is disposed at the bottom of the test box body 1 and is communicated with the test chamber 111 through an air return opening 115. Specifically, the cooling air duct 12 and the warming air duct 13 are respectively disposed between the air outlet cavity 112 and the air return cavity 114, and two ends of the cooling air duct 12 and two ends of the warming air duct 13 are respectively connected to the air outlet cavity 112 and the air return cavity 114. The cooling air duct 12, the air outlet cavity 112, the air outlet 113, the test cavity 111, the air return opening 115 and the air return cavity 114 are communicated to form a closed cooling air flow loop, and in practical application, the cooling air duct 12 performs circulating cooling and low-temperature constancy on the internal environment temperature of the test cavity 111 through the closed cooling air flow loop; the temperature-raising air duct 13, the air outlet cavity 112, the air outlet 113, the test cavity 111, the air return opening 115 and the air return cavity 114 are communicated to form a closed temperature-raising air flow loop, and in practical application, the temperature-raising channel circularly raises the temperature of the internal environment of the test chamber and keeps the temperature constant through the closed temperature-raising air flow loop. The temperature-raising airflow loop and the temperature-lowering airflow loop are isolated from each other, so that the temperature-raising program and the temperature-lowering program in the internal environment of the test chamber 111 can be operated independently.

Referring to fig. 1 and fig. 2, further, the air outlet cavity 112 is provided with a circulating fan 1121, and the circulating fan 1121 is disposed at the air outlet 113. The output direction of the circulating fan 1121 faces the air outlet 113, so as to limit the flow direction of the air in the warming air duct 13 and the cooling air duct 12, thereby achieving one-way backflow of the air flow in the environment inside the test chamber 111 during the warming procedure and the cooling procedure.

Referring to fig. 1 and fig. 2, a first electric valve 131 and a second electric valve 132 are respectively disposed at two ends of the warming air duct 13. The first electrically operated valve 131 is disposed at a connection between the warming air duct 13 and the air outlet cavity 112, and the second electrically operated valve 132 is disposed at a connection between the warming air duct 13 and the air return cavity 114. In practical application, the temperature control system can electrically control the first electric valve 131 and the second electric valve 132, when the temperature rise program is started in the test chamber 111, the temperature control system controls the first electric valve 131 and the second electric valve 132 to be opened, and cuts off the cooling air duct 12, so that the temperature rise air duct 13, the air outlet chamber 112, the test chamber 111 and the air return chamber 114 are communicated, and under the driving of the circulating fan 1121, the temperature rise air flow starts the one-way backflow, so that the temperature rise is performed on the environment in the test chamber 111, and the temperature rise program and the high temperature constancy can be completed.

Referring to fig. 1 and 2, further, the warming air duct 13 is further provided with a heater 133, and the heater 133 is installed in the warming air duct 13. Specifically, the heater 133 is disposed between the first electrically operated valve 131 and the second electrically operated valve 132 in the vertical warming air duct 13. When the temperature raising program is started in the test cavity 111, the heater 133 is turned on and heats the gas inside the temperature raising air duct 13, and the circulating fan 1121 blows the high-temperature gas into the test cavity 111, so as to heat the environment inside the test cavity 111; in addition, the heater 133 is disposed perpendicular to the air flow direction of the warming air duct 13, so that the circulating air flow can be sufficiently and uniformly heated, and the warming error of each region inside the test chamber 111 can be reduced.

Referring to fig. 1 and 2, further, the test box main body 1 further includes a water-cooling heat exchange system 14, and the water-cooling heat exchange system 14 includes a water-cooling heat exchanger 141, a water pump 142, and an air-cooling heat exchanger 143. The water-cooled heat exchanger 141 is arranged in the warming air duct 13, and the water-cooled heat exchanger 141 and the heater 133 are arranged on the side close to the second electric valve 132; the water pump 142 and the air-cooled heat exchanger 143 are disposed outside the warming air duct 13. When being at high temperature constant in experimental chamber 111, partial test product can release the heat to destroy inside constant temperature environment, water-cooling heat transfer system 14 can be launched as required and carry out the water-cooling. Compared with the compressor refrigeration of the traditional test box, the water-cooling heat exchanger 141 can maintain the constant temperature inside the working cavity 11 with extremely low energy consumption, so that the energy consumption of the test box in the high-temperature constant-temperature process is further reduced.

Referring to fig. 1 and fig. 2, specifically, the output end of the water-cooled heat exchanger 141, the air-cooled heat exchanger 143, the water pump 142 and the input end of the water-cooled heat exchanger 141 are sequentially connected by a pipeline, wherein the input end of the water pump 142 is connected to the air-cooled heat exchanger 143, and the output end of the water pump 142 is connected to the input end of the water-cooled heat exchanger 141. In practical application, low-temperature cold water exchanges heat with the internal environment of the warming air duct 13 through the water-cooling heat exchanger 141, so that the warming air flow is cooled to a certain degree, the heat released by the test product in the test cavity 111 is balanced, and the constant temperature environment in the test chamber is maintained. The cold water after heat exchange flows back through the pipeline, and when the temperature of the external environment is lower than the preset temperature, for example, 20 ℃, the cold water after heat exchange directly exchanges heat with the external environment through the air-cooled heat exchanger 143, and is output to the water-cooled heat exchanger 141 through the water pump 142 to perform circulating cooling work.

Referring to fig. 1 and 2, further, a third electric valve 121 and a fourth electric valve 122 are respectively disposed at two ends of the cooling air duct 12. The third electrically operated valve 121 is disposed at a connection between the cooling air duct 12 and the air outlet cavity 112, and the fourth electrically operated valve 122 is disposed at a connection between the cooling air duct 12 and the air return cavity 114. In practical application, the temperature control system can electrically control the third electric valve 121 and the fourth electric valve 122, when the test cavity 111 starts the cooling program, the temperature control system controls the third electric valve 121 and the fourth electric valve 122 to open, and cuts off the warming air duct 13, so as to communicate the cooling air duct 12, the air outlet cavity 112, the test cavity 111 and the air return cavity 114, and the cooling air flow is driven by the circulating fan 1121 to open the one-way backflow, so as to cool the environment in the test cavity 111, and further, the cooling program and the low temperature constancy can be completed.

Referring to fig. 1 and 2, further, the test box body 1 further includes a cooling system 15, and the cooling system 15 includes a compressor 151, a condenser 152, a throttle valve 153, and an evaporator 154. The evaporator 154 is disposed in the cooling air duct 12, and the evaporator 154 is disposed between the third electric valve 121 and the fourth electric valve 122 in a direction perpendicular to the air flow direction of the cooling air duct 12; the compressor 151, the condenser 152, and the throttle valve 153 are disposed outside the cooling air duct 12. Specifically, the output end of the evaporator 154, the compressor 151, the condenser 152, the throttle valve 153, and the input end of the evaporator 154 are sequentially connected through a pipeline, wherein the medium in the pipeline sequentially flows from the compressor 151, the condenser 152, and the throttle valve 153 to the evaporator 154 through the input end of the evaporator 154, and then flows back to the compressor 151 through the output end of the evaporator 154. When the test cavity 111 starts the cooling program, the cooling system 15 starts and cools the gas inside the cooling air duct 12, and the circulating fan 1121 blows the low-temperature gas into the test cavity 111, so as to cool the environment inside the test cavity 111; in addition, the evaporator 154 is disposed perpendicular to the airflow direction of the cooling air duct 12, so that the circulating airflow can be sufficiently and uniformly cooled, and thus, the cooling error of each region inside the test chamber 111 can be reduced.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A dual-air-duct environmental test chamber is characterized by comprising: the test box comprises a test box main body, a cooling air channel and a heating air channel, wherein the test box main body comprises a working cavity, the cooling air channel and the heating air channel;

the test box main body further comprises a heater, a water-cooling heat exchange system and a cooling system, wherein the heater and the water-cooling heat exchange system are arranged in the warming air channel, and the cooling system is arranged in the cooling air channel.

2. The dual-air-channel environmental test chamber as recited in claim 1, wherein the working chamber comprises a test chamber, an air outlet, a return air chamber and a return air inlet, and the test chamber is arranged on one side of the test chamber main body; the air outlet cavity is arranged at the top of the test box main body and is communicated with the test cavity through the air outlet; the air return cavity is arranged at the bottom of the test box main body and is communicated with the test cavity through the air return opening.

3. The dual-air-channel environmental test chamber according to claim 2, wherein the cooling air channel and the warming air channel are respectively disposed between the air outlet chamber and the air return chamber, and two ends of the cooling air channel and two ends of the warming air channel are respectively communicated with the air outlet chamber and the air return chamber.

4. The dual-air-channel environmental test chamber of claim 2, wherein the air outlet cavity is provided with a circulating fan, and the circulating fan is arranged at the air outlet.

5. The dual-air-duct environmental test chamber of claim 3, wherein a first electric valve and a second electric valve are respectively disposed at two ends of the warming air duct, the first electric valve is disposed at a connection port of the warming air duct and the air outlet chamber, and the second electric valve is disposed at a connection port of the warming air duct and the air return chamber.

6. The dual-air-channel environmental test chamber of claim 5, wherein the water-cooled heat exchange system comprises a water-cooled heat exchanger, a water pump and an air-cooled heat exchanger; the water-cooling heat exchanger is arranged in the warming air channel, and the water-cooling heat exchanger is arranged on one side close to the second electric valve in parallel with the heater; the water pump and the air-cooled heat exchanger are arranged outside the warming air duct.

7. The dual-air-channel environmental test chamber of claim 6, wherein the output end of the water-cooling heat exchanger, the input end of the air-cooling heat exchanger, the water pump and the input end of the water-cooling heat exchanger are sequentially connected through a pipeline, the input end of the water pump is connected with the air-cooling heat exchanger, and the output end of the water pump is connected with the input end of the water-cooling heat exchanger.

8. The dual-air-channel environmental test chamber as claimed in claim 1, wherein a third electric valve and a fourth electric valve are respectively disposed at two ends of the cooling air channel, the third electric valve is disposed at a connection port of the cooling air channel and the air outlet chamber, and the fourth electric valve is disposed at a connection port of the cooling air channel and the air return chamber.

9. The dual-air-channel environmental test chamber of claim 8, wherein the cooling system comprises a compressor, a condenser, a throttle valve, and an evaporator, the evaporator is disposed within the cooling air channel, and the evaporator is disposed vertically between the third electrically-operated valve and the fourth electrically-operated valve in the direction of airflow of the cooling air channel; the compressor, the condenser and the throttle valve are arranged outside the cooling air duct.

10. The dual-air-duct environmental test chamber of claim 9, wherein an output of the evaporator, the compressor, the condenser, the throttle valve, and an input of the evaporator are sequentially connected by a pipe.