High-temperature VOC cabin cooling device, high-temperature VOC cabin and high-temperature VOC cabin cooling method

Abstract

The invention discloses a high-temperature VOC cabin cooling device, a high-temperature VOC cabin and a high-temperature VOC cabin cooling method. The cooling device comprises a convection assembly and a conduction assembly. Through the synergistic effect, cooling of the high-temperature VOC cabin is achieved. Compared with a large air compressor, according to the scheme, through temperature control and the optimized heat conduction assembly, the cooling efficiency can be improved in a targeted mode, energy is saved, emission is reduced, and therefore the long-term cost is reduced. The cooling method of the high-temperature VOC cabin comprises the steps that the convection assembly is started, and fluid circulates; the temperature in the test cabin body reaches a critical temperature, and the critical temperature is 110-90 DEG C; the temperature of the refrigerant is set to be 3-10 DEG C, and the conduction assembly is started; when the temperature reaches 40-50 DEG C, the convection assembly is closed; and closing the conduction assembly when the preset temperature is reached. The critical temperature and the refrigerant temperature can be adjusted according to actual requirements, and high flexibility and applicability are shown. While energy-saving and efficient cooling is realized, the method can be widely applied to high-temperature VOC cabins of different types and specifications, and different test requirements are met.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental protection instruments, and in particular to a high-temperature VOC cabin cooling device, a high-temperature VOC cabin and a high-temperature VOC cabin cooling method. Background Art

[0002] VOC chambers are mainly used to simulate specific environmental conditions and evaluate the release of volatile organic compounds from materials or products at high temperatures to ensure that they meet environmental standards and requirements, providing key data support for indoor air quality, material environmental performance evaluation and scientific research.

[0003] The existing high-temperature VOC cabin can reach a temperature of 250°C or even higher. It uses a jacket for temperature control and can only be cooled by ventilation. When the temperature in the cabin reaches or exceeds the boiling point of water, the water will evaporate quickly and lose its temperature control effect, so water cannot be used as a temperature control medium. Even if the boiling point of water is increased by pressurization and other methods so that it can remain liquid at a higher temperature, the cost is high on the one hand, and the thermal conductivity of water will decrease significantly at high temperatures on the other hand, resulting in low efficiency of heat conduction and temperature control. Therefore, in the prior art, large air compressors are used for ventilation to cool high-temperature VOC cabins. However, large air compressors produce a small amount of air per unit time, have high air pressure and noise, and have high costs for the entire machine and accessories. Summary of the invention

[0004] According to an embodiment of the present invention, in order to solve the above-mentioned deficiencies in the prior art, a high-temperature VOC cabin cooling device is provided, which is used to cool a high-temperature VOC cabin (the test temperature is higher than 250 degrees Celsius). The high-temperature VOC cabin includes a test cabin body, a sensor and a controller, and is characterized in that the high-temperature VOC cabin cooling device includes:

[0005] A convection component, the convection component is arranged outside the test chamber and is provided with an air outlet, an opening is provided on a side of the test chamber opposite to the convection component, and the air outlet can output flowing gas and enter the test chamber from the opening;

[0006] A conduction component is disposed in the test chamber, the conduction component is connected to the sensor and is controlled by the controller to a preset temperature, the conduction component is hollow inside, a refrigerant can flow through it, and heat conduction can be generated with the inside of the test chamber.

[0007] Preferably, the convection component comprises a fan.

[0008] Preferably, a filter box is provided between the air outlet of the fan and the opening, and the fluid at the air outlet enters the test chamber after being filtered by the filter box.

[0009] Preferably, the fan comprises a frequency converter, and the frequency converter adjusts the air volume and flow rate of the fan.

[0010] Preferably, the convection assembly further comprises a liquid evaporator, and the fluid entering the test chamber through the opening comprises both gas and evaporated liquid.

[0011] Preferably, the conductive assembly comprises a coiled tube.

[0012] Preferably, the conductive components are several groups of coils, and each group of coils can be controlled by the controller individually.

[0013] According to the high-temperature VOC cabin cooling device of the first embodiment of the present invention, the high-temperature VOC cabin can be cooled more efficiently through the synergistic effect of the conduction component and the convection component. This solution combines the cooling methods of the high-temperature VOC cabin and the low-temperature VOC cabin, and adjusts the layout of the conduction component in a targeted manner, changing the traditional jacket arranged outside the test cabin body into a conduction component arranged inside the test cabin body. The conduction component directly uses the refrigerant to conduct heat with the inside of the test cabin body, which is more efficient than the jacket and reduces unnecessary energy loss. Convection is used in the first stage, and conduction is used in the second stage. The switching time and temperature critical point of the two can be adjusted accordingly according to the experimental requirements, and can be more intelligently adapted to different test objects. Compared with the traditional large air compressor cooling method, this solution can also use the solution in a targeted manner to improve the cooling efficiency through temperature control and optimization of the area of ​​the heat conduction component and the applicability of the refrigerant, thereby reducing the long-term operating cost.

[0014] A high-temperature VOC chamber comprises a test chamber body, a sensor and a controller, and is characterized in that it also comprises the high-temperature VOC chamber cooling device described in the first embodiment.

[0015] The high-temperature VOC chamber of the second embodiment of the present invention can efficiently cool down and save energy, while significantly reducing the noise level during equipment operation, providing a quieter working environment, which is not only beneficial to the physical and mental health of operators, but also can avoid noise interference when accurate monitoring and recording of test data are required, making the experimental process more efficient and comfortable.

[0016] A method for cooling a high-temperature VOC cabin is applied to the above-mentioned high-temperature VOC cabin, and is characterized by comprising the following steps:

[0017] Step 1: Turn on the convection component to allow the fluid to circulate in the test chamber;

[0018] Step 2: Set the refrigerant temperature of the conduction component to 3-10 degrees, and when the temperature in the test chamber reaches the critical temperature, which is between 110 degrees and 90 degrees, turn on the conduction component;

[0019] Step 3: The sensor monitors that the temperature in the test chamber reaches 40-50 degrees, and the convection component is turned off;

[0020] Step 4: The sensor monitors that the temperature in the test chamber reaches a preset temperature and turns off the conduction component.

[0021] Preferably, the conduction component is externally connected to a pre-cooling fluid box, and the step 2 further comprises the following sub-steps:

[0022] While the convection assembly is turned on in step 1, the refrigerant in the precooling fluid box is precooled to 5-10 degrees;

[0023] When the temperature inside the test chamber reaches the critical temperature, turning on the conduction component;

[0024] The pre-cooled refrigerant enters the conduction component.

[0025] Preferably, in the method of the third embodiment, the critical temperature is 100 degrees and the refrigerant temperature is 5 degrees.

[0026] The critical temperature and refrigerant temperature in this method can be adjusted according to actual needs, showing high flexibility and applicability. While achieving energy-saving and efficient cooling, this makes the method widely applicable to high-temperature VOC chambers of different types and specifications to meet different testing needs.

[0027] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the structure of a high-temperature VOC cabin cooling device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to further illustrate the present invention.

[0030] First, combine Figure 1 The high-temperature VOC chamber cooling device according to an embodiment of the present invention is widely used in environmental testing and other scenarios. In this embodiment, VOC detection under high temperature is taken as an example for description.

[0031] like Figure 1 As shown, the high-temperature VOC cabin cooling device of the embodiment of the present invention is used to cool the high-temperature VOC cabin (the test temperature is higher than 250 degrees Celsius), and the high-temperature VOC cabin cooling device includes a convection component 2 and a conduction component 3.

[0032] Specifically, Figure 1As shown, the high-temperature VOC chamber includes a test chamber 1, a sensor and a controller. The convection component 2 is arranged outside the test chamber 1 and is provided with an air outlet. The test chamber 1 is provided with an opening on the side opposite to the convection component 2. The air outlet can output flowing gas and enter the test chamber 1 from the opening. Since the one-step cooling in the prior art is changed into a step-by-step cooling process, when the temperature difference between the inside and outside of the test chamber 1 is large, only the flow of fluid can be used to quickly cool down, and it is not necessary to use an air compressor for pressurization. The air volume of the unpressurized fan is larger and more controllable. In actual operation, it saves energy and has low noise. The conduction component 3 is arranged in the test chamber 1. The conduction component 3 is connected to the sensor and is controlled by the controller to a preset temperature. The conduction component 3 and the inside of the test chamber 1 can generate heat conduction. The traditional jacket arranged outside the test chamber 1 is changed into a conduction component 3 arranged inside the test chamber 1. The conduction component 3 directly uses the flowing refrigerant to conduct heat with the inside of the test chamber 1, which is more efficient than the jacket. The interior of the conduction component 3 is hollow and the refrigerant flows therethrough, so that the heat conduction performance of the refrigerant can be fully utilized to quickly take away the heat in the cabin.

[0033] The high-temperature VOC cabin cooling device achieves efficient, precise and low-noise cooling of the high-temperature VOC cabin by combining convection cooling and conduction cooling, and is supplemented by a control system.

[0034] Preferably, the convection assembly 2 includes a fan. By implementing forced convection through the fan, the high-temperature air in the cabin can be drawn out more quickly and replaced by relatively low-temperature cold air outside, achieving rapid cooling. The cost of the fan and the maintenance cost are significantly lower than those of a large air compressor. When the temperature drops to above 100 degrees, its cooling efficiency is almost the same as that of a large air compressor, but the energy consumption is lower and the noise is significantly reduced.

[0035] Preferably, if Figure 1 As shown, a filter box 4 is provided between the air outlet of the fan and the opening, and the fluid at the air outlet is filtered by the filter box 4 before entering the test chamber 1. The filter box can filter out dust, particles and other impurities in the air entering the test chamber 1, and keep the chamber environment clean. This is particularly important for VOC chambers that require high-precision test conditions, and can avoid the influence of external pollution on the test results.

[0036] Preferably, the fan includes a frequency converter, which adjusts the fan air volume and flow rate. The frequency converter can adjust the fan air volume and flow rate, making the cooling process more flexible and controllable. According to different cooling requirements, the operating state of the fan can be accurately adjusted to achieve the effect of energy saving and consumption reduction.

[0037] Preferably, the convection assembly 2 further includes a liquid evaporator (not shown in the figure), and the fluid entering the test chamber 1 through the opening contains both gas and evaporated liquid. The addition of the liquid evaporator allows the fluid entering the test chamber 1 to contain not only gas but also evaporated liquid. This can further improve the cooling efficiency, because the evaporated liquid can absorb a large amount of heat, thereby achieving faster cooling.

[0038] Preferably, the conduction component 3 is a coil. The coil has a simple structure, is easy to maintain, and has a large heat exchange area, which helps to increase the heat conduction efficiency. When the temperature in the test chamber gradually approaches room temperature, the cooling effect of the convection component 2 is poor. The coil is turned on and the temperature of the refrigerant is controlled to achieve a better cooling effect.

[0039] Preferably, the conduction component 3 is a plurality of groups of coils, each group of coils can be controlled by a controller individually. Each group of coils is controlled by a controller individually, which can achieve accurate cooling of different areas in the cabin. This design improves the flexibility and adaptability of the cooling system and can better meet complex and changing test requirements.

[0040] Above, refer to Figure 1 A high-temperature VOC cabin cooling device according to an embodiment of the present invention is described. Through the synergistic effect of the conduction component 3 and the convection component 2, the cooling of the high-temperature VOC cabin can be achieved more efficiently. This scheme combines the cooling methods of the high-temperature VOC cabin and the low-temperature VOC cabin, and adjusts the layout of the conduction component 3 in a targeted manner. The conduction component 3 directly uses the refrigerant to conduct heat with the inside of the test cabin 1, reducing unnecessary energy loss. Convection is used in the first stage, and conduction is used in the second stage. The switching time and temperature critical point of the two can be adjusted accordingly according to the experimental requirements, and can be more intelligently adapted to different test objects. Compared with the traditional large air compressor cooling method, this scheme can also use the scheme in a targeted manner to improve the cooling efficiency through temperature control and optimization of the area of ​​the heat conduction component 3 and the applicability of the refrigerant, thereby reducing long-term operating costs.

[0041] A high-temperature VOC chamber comprises a test chamber body 1, a sensor and a controller, and is characterized in that it also comprises the high-temperature VOC chamber cooling device of the first embodiment.

[0042] The high-temperature VOC chamber of the second embodiment of the present invention can efficiently cool down and save energy, while significantly reducing the noise level during equipment operation, providing a quieter working environment, which is not only beneficial to the physical and mental health of operators, but also can avoid noise interference when accurate monitoring and recording of test data are required, making the experimental process more efficient and comfortable.

[0043] The high temperature VOC chamber cooling method of the third embodiment of the present invention comprises the following steps:

[0044] Step 1: Turn on the convection component 2, and the fluid circulates in the test chamber 1;

[0045] Step 2: Set the refrigerant temperature of the conduction component 3 to 3-10 degrees. When the temperature in the test chamber reaches the critical temperature, which is between 110 degrees and 90 degrees, turn on the conduction component 3.

[0046] Step 3: When the temperature in the test chamber 1 reaches 40-50 degrees, the convection component 2 is turned off;

[0047] Step 4: When the temperature in the test chamber 1 is monitored by the sensor and reaches a preset temperature, the conduction component 3 is turned off.

[0048] After a round of tests in the test chamber 1 is completed, when a cooling device is needed for cooling, the convection component 2 is turned on in the first stage, and a high-speed fluid enters from the opening and circulates in the test chamber to remove the heat in the test chamber. The air volume and flow rate can be adjusted according to demand; when the temperature reaches the critical point, the boundary efficiency of the convection component 2 decreases, and the second stage is turned on to use conduction cooling to further remove the heat in the test chamber. When the temperature reaches 40-50 degrees, the marginal benefit of the fan is significantly reduced until it has almost no effect. At this time, the fan is turned off and only the coil refrigerant is used for cooling. One or several groups of coils can be turned on according to the efficiency requirements to achieve the desired effect while saving energy and reducing emissions as much as possible.

[0049] Preferably, the conduction component 3 is externally connected to a pre-cooling fluid box, and step 2 further comprises the following sub-steps:

[0051] While turning on the convection assembly 2 in step 1, precool the refrigerant in the precooling fluid box to 5-10 degrees;

[0052] When the temperature inside the test chamber reaches a critical temperature, the conduction component 3 is turned on;

[0053] The pre-cooled refrigerant enters the conduction component 3.

[0054] Preferably, in the method of the third embodiment, the critical temperature is 100 degrees and the refrigerant temperature is 5 degrees.

[0055] While starting the first stage, pre-cooling for the second stage conduction cooling is added. Specifically, the refrigerant in the pre-cooling fluid box connected to the conduction component 3 can be cooled to the required temperature of 5-10 degrees. When the critical temperature is reached, the refrigerant can directly enter the conduction component 3 at this temperature, further achieving a better cooling effect, and the cooling efficiency is further greatly improved. When the preset critical temperature is 100 degrees and the refrigerant temperature is 5 degrees, the energy saving effect is the best.

[0056] The critical temperature and refrigerant temperature in this method can be adjusted according to actual needs, showing high flexibility and applicability. While achieving energy-saving and efficient cooling, this makes the method widely applicable to high-temperature VOC chambers of different types and specifications to meet different testing needs.

[0057] In the description of the present invention, it should be noted that, unless otherwise specified, “plurality” means two or more than two; the orientations or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “inner”, “outer”, “top”, and “bottom” are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0058] It should be noted that, in this specification, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0059] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A high-temperature VOC chamber cooling device, used for cooling a high-temperature VOC chamber (test temperature is higher than 250 degrees Celsius), the high-temperature VOC chamber comprising a test chamber, a sensor and a controller, characterized in that: The high temperature VOC cabin cooling device comprises: A convection component, the convection component is arranged outside the test chamber and is provided with an air outlet, an opening is provided on a side of the test chamber opposite to the convection component, and the air outlet can output flowing gas and enter the test chamber from the opening; A conduction component is disposed in the test chamber, the conduction component is connected to the sensor and is controlled by the controller to a preset temperature, the conduction component is hollow inside and a refrigerant can flow therethrough, and heat conduction can occur between the conduction component and the inside of the test chamber.

2. The high-temperature VOC cabin cooling device according to claim 1, characterized in that: The convection component includes a fan.

3. The high temperature VOC cabin cooling device according to claim 2, characterized in that: A filter box is provided between the air outlet of the fan and the opening, and the fluid at the air outlet enters the test chamber after being filtered by the filter box.

4. The high-temperature VOC cabin cooling device according to claim 3, characterized in that: The fan includes a frequency converter, and the frequency converter adjusts the air volume and flow rate of the fan.

5. The high temperature VOC cabin cooling device according to claim 1, characterized in that: The conductive assembly includes a coil.

6. The high-temperature VOC cabin cooling device according to claim 5, characterized in that: The conduction components are a plurality of groups of coils, and each group of coils can be controlled by the controller individually.

7. A high temperature VOC chamber, comprising a test chamber, a sensor and a controller, characterized in that: It also comprises the high-temperature VOC cabin cooling device as described in any one of claims 1-6.

8. A method for cooling a high-temperature VOC cabin, applied to the high-temperature VOC cabin as claimed in claim 7, characterized in that: The following steps are involved: Step 1: Turn on the convection component to allow the fluid to circulate in the test chamber; Step 2: Set the refrigerant temperature of the conduction component to 3-10 degrees. When the temperature in the test chamber reaches the critical temperature, which is between 110 degrees and 90 degrees, turn on the conduction component. Step 3: The sensor monitors that the temperature in the test chamber reaches 40-50 degrees, and the convection component is turned off; Step 4: The sensor monitors that the temperature in the test chamber reaches a preset temperature and turns off the conduction component.

9. The method for cooling a high-temperature VOC chamber according to claim 8, characterized in that: The conduction component is externally connected to a precooling fluid box, and the step 2 further comprises the following sub-steps: While the convection assembly is turned on in step 1, the refrigerant in the precooling fluid box is precooled to 5-10 degrees; When the temperature inside the test chamber reaches the critical temperature, turning on the conduction component; The pre-cooled refrigerant enters the conduction component.

10. The method for cooling a high-temperature VOC chamber according to claim 9, characterized in that: The critical temperature is 100 degrees and the refrigerant temperature is 5 degrees.

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