Energy storage type temperature rising and falling test equipment

Abstract

The utility model relates to test equipment field especially, points to a kind of energy storage type temperature rising and falling test equipment, containing test groove and compressor, the inside of test groove has return air flow channel, and the first heat exchange mechanism of energy transmission is carried out in return air flow channel, compressor provides high-pressure high-temperature gaseous phase-change material to the first heat exchange mechanism, it is characterized in that, still contain energy storage groove and switching valve, the inside of energy storage groove contains second exchange mechanism, compressor is communicated with the first heat exchange mechanism, second heat exchange mechanism by switching valve and chooses one;The utility model temperature rising and falling test equipment uses the use of switching valve and the application of second heat exchange mechanism in energy storage groove, so that compressor simultaneously takes into account two means of precooling and refrigeration, simultaneously, it can also overcome the problem that compressor needs high power, optimizes the loss of energy fully.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment, and more particularly to an energy storage heating and cooling testing device. Background Technology

[0002] Temperature rise and fall testing equipment is used to test the characterization changes of products under different environments, and can also be used to test the working conditions of products after long-term use under different environments.

[0003] Traditional temperature rise and fall testing equipment requires continuously supplying cold air into the test chamber during the cooling phase to bring the chamber temperature to the specified value.

[0004] It is easy to see that this structure requires the use of a high-power compressor. Only under this condition can it achieve the corresponding cooling efficiency. However, using a high-power compressor is costly and energy-intensive. Utility Model Content

[0005] To address the aforementioned issues, this invention provides an energy storage-type temperature rise and fall testing device with an energy storage cooling method, which reduces the power requirements of the compressor by superimposing cold air in the test tank.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: an energy storage type heating and cooling test device, comprising a test tank and a compressor, wherein the test tank has a return air channel inside and a first heat exchange mechanism for energy transfer in the return air channel, and the compressor provides high-pressure and high-temperature gaseous phase change material to the first heat exchange mechanism, characterized in that it further comprises an energy storage tank and a switching valve, wherein the energy storage tank contains a second heat exchange mechanism, and the compressor is selectively connected to one of the first heat exchange mechanism and the second heat exchange mechanism through the switching valve.

[0007] The beneficial effects of this utility model are:

[0008] This utility model of heating and cooling testing equipment utilizes the use of a switching valve and the application of a second heat exchange mechanism in the energy storage tank, enabling the compressor to simultaneously perform both pre-cooling and cooling functions. At the same time, it overcomes the problem of the compressor requiring high power and fully optimizes energy consumption.

[0009] This utility model includes a shell, with both the test tank and the energy storage tank disposed inside the shell. The shell also has a cavity reserved between the test tank and the energy storage tank. A switch valve is provided in the cavity to conduct or cut off the heat exchange between the test tank and the energy storage tank. Preferably, the side of the cavity facing the test tank has multiple second air holes, and the switch valve is located on the side of the cavity facing the energy storage tank. When the valve is open, the switch valve is located in the cavity and will not obstruct the flow of gas.

[0010] Inside the test chamber, there is also a baffle that forms a return air flow channel. The baffle separates the interior of the test chamber. The lower end of the baffle and the bottom surface of the test chamber are reserved to allow gas flow for heat exchange. The upper end of the baffle is connected to the top surface of the test chamber and has a first air hole for gas flow. One of the areas in the test chamber divided by the baffle is the heat exchange zone, and the first heat exchange mechanism is located in the heat exchange zone. In this way, the orderly flow direction makes the heating or cooling of the gas more uniform.

[0011] The aforementioned first heat exchange mechanism includes a test heater and a test evaporator. Depending on the customer's needs, the test heater is used for heating, and the test evaporator is selected for cooling. Of course, the test evaporator can also be heated to improve heating efficiency.

[0012] In this specific embodiment, the energy storage evaporator and the test evaporation plate are made of aluminum. Aluminum has the advantages of large specific heat capacity and fast heat dissipation, which can quickly release low temperature.

[0013] It should be noted that it also includes the existing PID automatic control system, which controls the opening and closing angle of the valve. The PID automatic control system is existing technology, and its principle and structure will not be described in detail.

[0014] A testing method, characterized by comprising the following steps:

[0015] S1, when the test tank is at a constant temperature, the internal temperature of the test tank is obtained. According to the set ambient temperature, the compressor and the energy storage evaporator inside the energy storage tank form a closed loop and exchange heat with the energy storage evaporator inside the energy storage tank through independent circulation.

[0016] S2, after the equipment is de-temperature preserved, the compressor, through the switching valve, forms a closed loop with the test evaporator inside the test tank, and exchanges heat with the test evaporator inside the test tank through independent circulation.

[0017] S3. Based on the compressor's power, the maximum instantaneous temperature rate extreme point inside the test tank per unit time is obtained. When the maximum instantaneous temperature rate extreme point is reached, the switch valve between the energy storage tank and the test tank is opened, so that the first fluid in the energy storage tank and the second fluid in the test tank are superimposed, and the ambient temperature inside the test tank reaches the calibrated value.

[0018] This method mainly emphasizes an energy storage step. Through pre-stored energy, a conduction compensation mechanism is used to compensate for the insufficient energy conversion efficiency of the low-power compressor per unit time. With the superposition of the two airflows, the calibrated ambient temperature can be reached within the calibrated time. Therefore, this invention provides a method that uses a low-power compressor but still meets the requirements of the test environment, greatly reducing the overall operating cost and power demand, and achieving the effect of energy saving and emission reduction.

[0019] For example, during the cooling process, the test tank is at an operating temperature of 100°C, while the energy storage tank has already completed heat exchange to -60°C. In order to achieve rapid cooling, the compressor cools the test tank through a switching valve. At this time, the performance of the compressor is transferred to the cooling process of the test tank. Suppose that the cooling efficiency of the test evaporator drops significantly after -20°C (the extreme point of the maximum instantaneous cooling rate). At this time, the switch valve is opened to release the stored cold flow. In this way, the same compressor not only achieves a pre-cooling effect, but also achieves a cooling effect, combining the stored cold flow and the cooling cold flow.

[0020] This invention can also be used for heating. The principle of heating is the same as that of cooling. For details, please refer to the cooling process described above.

[0021] In the energy storage stage, the first circulation blower stirs the airflow in the energy storage tank, making the internal airflow temperature more uniform.

[0022] Inside the test chamber, the second circulation drum stirs the airflow, making the internal airflow temperature more uniform.

[0023] To provide a more comprehensive explanation of this invention, examples are provided to further illustrate the control of rapid heating and cooling. This explanation is not intended to further limit the invention. Please refer to Table 1 below (examples of test curves for rapid heating and cooling):

[0024] Table 1

[0025] 1. The cooling time from 100℃ to -50℃ is 15 minutes, and the cooling rate is 10℃ / minute;

[0026] 2.A is the high-temperature test section. The test tank operates at a high temperature of 100℃, and the test evaporator does not work. The refrigeration system is turned on, the energy storage evaporator works, and low-temperature energy storage begins. The low-temperature energy storage setpoint is calibrated to -70℃ (the low-temperature energy storage setpoint is lower than the program's low-temperature setpoint, which is used to enhance the compressor's work capacity and improve cooling efficiency).

[0027] 3.B is the rapid cooling front section, where the refrigeration system switches to test evaporator operation, and the test tank temperature drops rapidly;

[0028] 4. When the temperature reaches point C, the controller controls the opening degree of the switch valve, and the low-temperature cold energy from the energy storage tank enters the test tank, increasing the cooling capacity to meet the cooling rate requirements of the later stage of the test tank; the opening degree of the switch valve is automatically controlled by PID to regulate the release of cold energy from the energy storage tank.

[0029] 5.D is the low-temperature constant temperature section. The refrigeration system can be adjusted to meet the low-temperature constant temperature requirements. At this time, the energy storage tank valve is closed, and there is no need to release cold energy into the test tank. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the usage state of the rapid cooling front section of this utility model.

[0031] Figure 2 This is a schematic diagram of the usage state of the rapid cooling stage of this utility model.

[0032] Figure 3 This is a perspective view of the present invention.

[0033] Figure 4 yes Figure 3 A sectional view. Detailed Implementation

[0034] like Figure 1-4 As shown, a testing method is characterized by comprising the following steps:

[0035] S1, when the test tank 1 is at a constant temperature, the internal temperature of the test tank 1 is obtained. According to the set ambient temperature, the compressor and the energy storage evaporator 31 inside the energy storage tank 3 form a closed loop and exchange heat with the energy storage evaporator 31 inside the energy storage tank 3 through independent circulation.

[0036] S2, after the equipment is de-temperature stored, the compressor, through the switching valve, forms a closed loop with the test evaporator 11 inside the test tank 1, and exchanges heat with the test evaporator 11 inside the test tank 1 through independent circulation.

[0037] S3, based on the power of the compressor, obtain the maximum instantaneous temperature rate extreme point inside the test tank 1 within a unit time, and when the maximum instantaneous temperature rate extreme point is reached, the switch valve 2 between the energy storage tank 3 and the test tank 1 is opened, so that the first fluid in the energy storage tank 3 and the second fluid in the test tank 1 are superimposed, and the ambient temperature in the test tank 1 reaches the calibrated value.

[0038] This method mainly emphasizes an energy storage step. Through pre-stored energy, a conduction compensation mechanism is used to compensate for the insufficient energy conversion efficiency of the low-power compressor per unit time. With the superposition of the two airflows, the calibrated ambient temperature can be reached within the calibrated time. Therefore, this invention provides a method that uses a low-power compressor but still meets the requirements of the test environment, greatly reducing the overall operating cost and power demand, and achieving the effect of energy saving and emission reduction.

[0039] For example, during the cooling process (the blue arrow in the diagram represents the flow loop of the cold flow), the operating temperature in test tank 1 is 100°C, while the heat exchange in energy storage tank 3 has already reached -60°C. In order to achieve rapid cooling, the compressor cools the test tank 1 through a switching valve. At this time, the performance of the compressor is transferred to the cooling process in test tank 1. Suppose that the cooling efficiency of the test evaporator 11 drops significantly after -20°C (the extreme point of the maximum instantaneous cooling rate). At this time, the switch valve 2 is opened to release the stored cold flow. In this way, the same compressor not only achieves a pre-cooling effect but also a cooling effect, combining the stored cold flow and the cooling cold flow.

[0040] This invention can also be used for heating. The principle of heating is the same as that of cooling. For details, please refer to the cooling process described above.

[0041] In the energy storage stage, the first circulating blower 4 stirs the airflow in the energy storage tank 3, making the internal airflow temperature more uniform.

[0042] Inside test tank 1, the second circulation drum 5 stirs the airflow inside test tank 1, making the internal airflow temperature more uniform.

[0043] An energy storage type heating and cooling test device includes a test tank 1 and a compressor. The test tank 1 has a return air channel (as shown by the red arrow in the figure) and a first heat exchange mechanism for energy transfer in the return air channel. The compressor provides high-pressure and high-temperature gaseous phase change material to the first heat exchange mechanism. The device is characterized by further including an energy storage tank 3 and a switching valve. The energy storage tank 3 contains a second heat exchange mechanism. The compressor is selectively connected to either the first heat exchange mechanism or the second heat exchange mechanism through the switching valve.

[0044] The beneficial effects of this utility model are:

[0045] This utility model of heating and cooling testing equipment utilizes the use of a switching valve and the application of a second heat exchange mechanism in the energy storage tank 3, enabling the compressor to simultaneously perform both pre-cooling and cooling functions. At the same time, it also overcomes the problem of the compressor requiring high power and fully optimizes energy consumption.

[0046] This utility model includes a housing 6, with the test tank 1 and the energy storage tank 3 both disposed inside the housing 6. The housing 6 also has a cavity 61 reserved between the test tank 1 and the energy storage tank 3. The cavity 61 is provided with a switch valve 2 for conducting or stopping the heat exchange between the test tank 1 and the energy storage tank 3. Preferably, the switch valve 2 is disposed on the side of the cavity 61 facing the energy storage tank 3. The side of the cavity 61 facing the test tank 1 is provided with multiple second air holes. When the valve is open, the switch valve 2 is located in the cavity 61 and will not obstruct the flow of gas.

[0047] Inside the test tank 1, a baffle 100 is also provided to form a return air flow channel. The baffle 100 separates the interior of the test tank 1. The lower end of the baffle 100 and the bottom surface of the interior of the test tank 1 are reserved to allow gas flow space for heat exchange. The upper end of the baffle 100 is connected to the top surface of the interior of the test tank 1. The upper end of the baffle 100 is reserved with a first air hole for gas flow. One of the areas in the test tank 1 divided by the baffle 100 is the heat exchange zone 100a. The first heat exchange mechanism is located in the heat exchange zone 100a. In this way, the orderly flow direction makes the heating or cooling of the gas more uniform.

[0048] The aforementioned first heat exchange mechanism includes a test heater 71 and a test evaporator 11. Depending on the customer's needs, the test heater 71 is used for heating, and the test evaporator 11 is selected for cooling. Alternatively, the test evaporator 11 can be selected for heating during the heating phase to improve heating efficiency.

[0049] In this specific embodiment, the energy storage evaporator 31 and the test evaporation plate 11 are aluminum plates. Aluminum plates have the advantages of large specific heat capacity and fast heat dissipation, and can quickly release low temperature.

[0050] It should be noted that it also includes an existing PID automatic control system, which controls the opening and closing angle of the switch valve 2. The PID automatic control system is existing technology, and its principle and structure will not be described in detail.

[0051] The energy storage tank 3 is also equipped with a low-temperature heater 8. For some users who have special requirements for the test environment temperature, the low-temperature heater 8 can be used to heat the energy storage tank 3 so that the interior of the energy storage tank 3 can obtain a specific low temperature.

[0052] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A storage-type heating and cooling testing device, comprising a test tank and a compressor, wherein the test tank has a return air channel inside, and a first heat exchange mechanism for energy transfer in the return air channel, and the compressor provides high-pressure, high-temperature gaseous phase change material to the first heat exchange mechanism, characterized in that, It also includes an energy storage tank and a switching valve. The energy storage tank contains a second heat exchange mechanism. The compressor is connected to either the first heat exchange mechanism or the second heat exchange mechanism through the switching valve.

2. The energy storage heating and cooling testing device according to claim 1, characterized in that, It includes an outer shell, with the test tank and energy storage tank both housed inside the outer shell. The outer shell also has a cavity reserved between the test tank and the energy storage tank, and the cavity is equipped with a switch valve to conduct or stop the heat exchange between the test tank and the energy storage tank.

3. The energy storage heating and cooling testing device according to claim 2, characterized in that, The cavity has multiple second air holes on the side facing the test tank, and the switch valve is located on the side of the cavity facing the energy storage tank. When the valve is opened, the switch valve is located in the cavity.

4. The energy storage heating and cooling testing device according to claim 1, characterized in that, Inside the test chamber, there is also a baffle that forms a return air flow channel. The baffle separates the interior of the test chamber. The lower end of the baffle and the bottom surface of the test chamber are reserved to allow for gas flow for heat exchange. The upper end of the baffle is connected to the top surface of the test chamber. The upper end of the baffle is reserved with a first air hole for gas flow.

5. The energy storage heating and cooling testing device according to claim 1, characterized in that, The first heat exchange mechanism includes a test heater and a test evaporator.

6. The energy storage heating and cooling test device according to claim 5, characterized in that, The energy storage evaporator and the test evaporation plate are made of aluminum.

7. The energy storage heating and cooling testing device according to claim 1, characterized in that, The energy storage tank is also equipped with a low-temperature heater.

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