Adjustable high and low temperature test box

Abstract

The utility model discloses an adjustable high and low temperature test box, which comprises a box body, the test cavity is formed in the upper side in the box body; the variable temperature cavity is formed in one side of the test cavity; a groove is formed in the side wall, connected with the variable-temperature cavity, of the test cavity, a fan is installed in the groove, and an electrically-connected electric heating wire is fixedly connected to the middle of the variable-temperature cavity; a heat storage box is arranged in the box body at the lower part of the test cavity, a heat pump is arranged at the bottom of the box body, an evaporator is arranged at the bottom of the variable-temperature cavity, and the heat storage box and the evaporator are respectively connected with the heat pump through a heat exchange tube group; heat is transferred into the heat storage box, the heat storage box absorbs and stores excess heat released by the test cavity, an evaporator sprays cold air to cool the test cavity through a fan, a hinge rod can pull out a placement plate at an insertion position by a certain distance when a box door is opened, and then a detector can conveniently wear safety gloves and pull out the placement plate by pulling the hinge rod; and scalding or frostbite caused by touching the test product and the inner side wall of the box body by directly drawing out the placing plate is avoided.

Description

Technical Field

[0001] This utility model relates to the field of high and low temperature testing technology, specifically to an adjustable high and low temperature test chamber. Background Technology

[0002] High and low temperature test chambers are mainly used to test the performance indicators of components and materials of products in electrical engineering, automobiles and motorcycles, aerospace, shipbuilding and weaponry, universities, and research institutions under alternating high and low temperature conditions. High and low temperature test chambers do not have humidity settings; therefore, the temperature ranges they typically operate on are 0℃~150℃, -20℃~150℃, -40℃~150℃, -60℃~150℃, and -70℃~150℃ during cyclic testing. Patent number CN221638167U discloses a high and low temperature test chamber where the tester's fingers do not need to enter the chamber through a push rod, thus reducing the risk of burns from the inner walls. Water entering the mounting rack carries away heat from the rack, cooling it down, further reducing the risk of burns to the tester's fingers. However, it lacks a heat storage structure and does not allow for convenient removal of the test product when the chamber door is opened.

[0003] Specifically, existing adjustable high and low temperature test chambers lack heat storage structures and cannot easily remove test products while the chamber door is open. Therefore, there is an urgent need for a new type of adjustable high and low temperature test chamber to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable high and low temperature test chamber to solve the problems mentioned above.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] An adjustable high and low temperature test chamber includes: a chamber body;

[0007] The test chamber is located inside the upper side of the chamber.

[0008] A variable-temperature chamber is located on one side of the test chamber;

[0009] The test chamber and the temperature-changing chamber are connected by a groove on the side wall, and a fan is installed inside the groove. An electrically connected heating wire is fixed in the middle of the temperature-changing chamber.

[0010] Preferably, a heat storage box is placed in the lower part of the test chamber inside the box, a heat pump is placed at the bottom of the box, an evaporator is placed at the bottom of the temperature-changing chamber, and the heat storage box and the evaporator are respectively connected to the heat pump by heat exchange tube groups.

[0011] Preferably, the test chamber is provided with symmetrically arranged sliding grooves, and multiple slidingly connected placement plates are provided on the sliding grooves.

[0012] Preferably, the box body is hinged with a box door, the box door has multiple limiting grooves, the limiting grooves are used to insert hinge rods, and slots are opened on both sides of the placement plate, with one side of the hinge rod placed in the slot.

[0013] Preferably, a control panel is installed outside the cabinet door, and the control panel is electrically connected to the heat pump, heat storage box, evaporator and fan.

[0014] Preferably, the heat storage box has insulation layers placed on both sides.

[0015] Preferably, the fan is rotatably connected to both ends with protrusions, and a spring is connected to the middle of one of the protrusions, with the groove matching the shape of the protrusion.

[0016] The beneficial effects of this utility model are:

[0017] The system employs a heat pump system in conjunction with a heat storage structure for temperature control. The heat pump includes components such as a compressor, condenser, evaporator, and throttling mechanism. During high-temperature testing, the product is placed in the corresponding placement plate inside the chamber according to its standard test temperature. The placement plate is heated to the appropriate temperature based on its proximity to the heating wire. The two sides of the hinge rod are placed in the corresponding limiting grooves and slots. The power is turned on using the control panel, causing the heating wire to release heat to test the product in the test chamber. After the test, the heat is transferred to the heat storage box through the heat exchange tube assembly and the heat pump. The heat storage box absorbs and stores the excess heat released from the test chamber. The evaporator sprays cold air, which is then cooled by a fan. Opening the hinge rod of the chamber door will pull the placement plate out a short distance, making it easier for testing personnel to pull out the placement plate by pulling the hinge rod while wearing safety gloves. This avoids direct contact between the placement plate and the test product or the inner wall of the chamber, which could cause burns or frostbite.

[0018] High-temperature and high-pressure gas releases heat to the inorganic salt solution in the heat storage tank through the heat exchange tube assembly. The solution in the heat storage tank circulates, accelerating the temperature inside the test chamber to drop to the ambient temperature.

[0019] During the low-temperature test, the refrigerant undergoes a continuous compression and expansion process in these components. The compressor compresses the low-pressure refrigerant gas into a high-temperature and high-pressure gas. The refrigerant changes from a high-temperature and high-pressure state to a low-temperature and low-pressure state. The low-temperature and low-pressure refrigerant flows through the heat exchange tube assembly and is cooled by the air in the variable temperature chamber through the evaporator. The fan is started to cool the test chamber and test the product. After the test, the heat storage box is started to circulate and accelerate the temperature in the test chamber to return to the natural temperature.

[0020] By pressing the protrusion, the spring is compressed, which can pull the fan out of the groove, allowing for fan replacement and cleaning. This facilitates the maintenance and replacement of test chamber components, ensuring work efficiency. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 This is a perspective view of the box door of this utility model when it is open;

[0023] Figure 2 This is a cross-sectional view of the test chamber and the temperature-changing chamber of this utility model;

[0024] Figure 3 This is a perspective view of the fan of this utility model;

[0025] In the diagram: 1. Cabinet; 2. Cabinet door; 3. Control panel; 5. Heat pump; 6. Evaporator; 7. Heat exchanger tube assembly;

[0026] 11. Test chamber; 12. Temperature-changing chamber;

[0027] 21. Fan; 22. Spring; 23. Protrusion;

[0028] 31. Heating wire; 33. Limiting groove; 34. Hinge rod; 35. Slide groove; 36. Placement plate; 37. Slot. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1 and Figure 2 As shown, an adjustable high and low temperature test chamber includes: chamber body 1;

[0031] Test chamber 11 is located inside the upper side of box 1;

[0032] Temperature-changing cavity 12 is located on one side of test cavity 11;

[0033] The side wall connecting the test chamber 11 and the temperature-changing chamber 12 is provided with a groove, and a fan 21 is installed inside the groove. An electrically connected heating wire 31 is fixed in the middle of the temperature-changing chamber 12.

[0034] Please see Figure 3 As shown, a heat storage box is placed in the lower part of the test chamber 11 inside the box body 1. A heat pump 5 is placed at the bottom of the box body 1. An evaporator 6 is placed at the bottom of the variable temperature chamber 12. The heat storage box and the evaporator 6 are respectively connected to the heat pump 5 by heat exchange tube groups 7.

[0035] The test chamber 11 is provided with symmetrically arranged sliding grooves 35, and multiple slidingly connected placement plates 36 are provided on the sliding grooves 35.

[0036] The box body 1 is hinged to a door 2. The door 2 has multiple limiting grooves 33. A hinge rod 34 is inserted into the limiting groove 33. The placement plate 36 has slots 37 on both sides. One side of the hinge rod 34 is placed in the slot 37. During the high-temperature test, the product is placed in the corresponding placement plate 36 inside the chamber 1 according to the standard test temperature. The placement plate 36 is heated according to the degree of proximity to the heating wire 31. The two sides of the hinge rod 34 are placed in the corresponding limiting grooves 33 and slots 37. The power is turned on using the control panel 3 so that the heating wire 31 releases heat to test the product in the test chamber 11. After the test, the heat is transferred to the heat storage box through the heat exchange tube group 7 and the heat pump 5. The heat storage box absorbs and stores the excess heat released by the test chamber 11. The evaporator 6 sprays cold air and the fan 21 cools the test chamber 11. Opening the door 2 and the hinge rod 34 will pull the placement plate 36 at the insertion position out a distance, so that the test personnel can wear safety gloves and pull the placement plate 36 out by pulling the hinge rod 34, avoiding direct contact with the test product and the inner wall of the chamber 1, which may cause burns or frostbite.

[0037] A control panel 3 is installed outside the door 2. The control panel 3 is connected to the heat pump 5, the heat storage box, the evaporator 6 and the fan 21 via telecommunications.

[0038] Insulation layers are placed on both sides of the heat storage box.

[0039] The blower 21 has protrusions 23 rotatably connected to both ends. A spring 22 is connected to the middle of one side of the protrusion 23. The groove matches the shape of the protrusion 23. By pressing the protrusion 23, the spring 22 is compressed, which can pull the blower 21 out of the groove, thereby replacing the blower 21 for cleaning. This facilitates the maintenance and replacement of the test chamber components and ensures work efficiency.

[0040] The working principle of this utility model is as follows: A heat pump system and a heat storage structure are used in conjunction with temperature control. The heat pump 5 includes components such as a compressor, condenser, evaporator 6, and throttling mechanism. During high-temperature testing, the product is placed in the corresponding placement plate 36 inside the chamber 1 according to its standard test temperature. The placement plate 36 corresponds to the heating temperature based on its proximity to the heating wire 31. The two sides of the hinge rod 34 are placed in the corresponding limiting grooves 33 and slots 37. The power is turned on using the control panel 3, causing the heating wire 31 to release heat into the test chamber 11. After the test, the heat is transferred to the heat storage box through the heat exchange tube group 7 and the heat pump 5. The heat storage box absorbs and stores the excess heat released by the test chamber 11. The evaporator 6 sprays cold air and the fan 21 cools the test chamber 11. Opening the door 2 hinge rod 34 will pull out the placement plate 36 at the insertion position by a certain distance, so that the test personnel can wear safety gloves and pull out the placement plate 36 by pulling the hinge rod 34, avoiding direct contact with the test product and the inner wall of the box 1, which may cause burns or frostbite.

[0041] The high-temperature and high-pressure gas releases heat to the inorganic salt solution in the heat storage box through the heat exchange tube group 7. The solution in the heat storage box circulates and accelerates the temperature in the test chamber 11 to drop to the ambient temperature.

[0042] During the low-temperature test, the refrigerant undergoes continuous compression and expansion in these components. The compressor compresses the low-pressure refrigerant gas into a high-temperature, high-pressure gas. The refrigerant changes from a high-temperature, high-pressure state to a low-temperature, low-pressure state. The low-temperature, low-pressure refrigerant flows through the heat exchange tube group 7 and is cooled by the air in the variable temperature chamber 12 through the evaporator 6. The fan 21 is started to cool the test chamber 11 to test the product. After the test, the heat storage box is started to circulate and accelerate the temperature in the test chamber 11 back to the natural temperature.

[0043] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. An adjustable high and low temperature test chamber, characterized in that, include: Box (1); The test chamber (11) is located on the upper side inside the box (1); A variable temperature chamber (12) is located on one side of the test chamber (11); The test chamber (11) and the temperature-changing chamber (12) are characterized by having a groove on the side wall where they are connected, a fan (21) is installed inside the groove, and an electrically connected heating wire (31) is fixed in the middle of the temperature-changing chamber (12). The lower part of the test chamber (11) is located inside the box body (1) and a heat storage box is placed therein. A heat pump (5) is placed at the bottom of the box body (1). An evaporator (6) is placed at the bottom of the temperature-changing chamber (12). The heat storage box and the evaporator (6) are respectively connected to the heat pump (5) by heat exchange tube groups (7).

2. The adjustable high and low temperature test chamber according to claim 1, characterized in that, The test chamber (11) is provided with symmetrically arranged sliding grooves (35), and multiple slidingly connected placement plates (36) are provided on the sliding grooves (35).

3. The adjustable high and low temperature test chamber according to claim 2, characterized in that, The box body (1) is hinged with a box door (2), the box door (2) has multiple limiting grooves (33), the limiting grooves (33) are inserted with hinge rods (34), the placement plate (36) has slots (37) on both sides, and one side of the hinge rod (34) is placed in the slot (37).

4. An adjustable high and low temperature test chamber according to claim 3, characterized in that, A control panel (3) is installed outside the door (2), and the control panel (3) is electrically connected to the heat pump (5), the heat storage box, the evaporator (6) and the fan (21).

5. An adjustable high and low temperature test chamber according to claim 1, characterized in that, The heat storage box has insulation layers on both sides.

6. The adjustable high and low temperature test chamber according to claim 1, characterized in that, The fan (21) has protrusions (23) rotatably connected at both ends, and a spring (22) is connected in the middle of the protrusion (23) on one side. The groove is adapted to the shape of the protrusion (23).

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