Dehumidification and desorption filter element based on heating film

Abstract

The utility model relates to a dehumidification and desorption filter element based on heating films, which comprises the following structures: the heating films which are continuously arranged in a shape like a Chinese character'ji '; the n-shaped gaps of the heating film are filled with the filtering particles; and the dehumidification and desorption filter element is connected with a temperature and humidity sensor. An inlet of the dehumidification and desorption filter element is connected with a cabin air conditioner return air inlet, and an outlet is connected with a desorption air duct. The dehumidification and desorption filter element is installed in an automobile air conditioner CMS, when the temperature is very low and the humidity is very high, the CMS is started to adsorb moisture in a cabin, when the humidity difference becomes large, the CMS heating function is automatically started, the absorbed moisture is heated and released, and at the moment, the moisture is exhausted out of an automobile through external circulation. The structure of combining the heating film and the filtering particles enables the thickness of the whole filter element to be only the width of one heating film, so that the space required by the thickness of the filter element is greatly reduced; and heat generated on the heating film can be directly conducted to the filter element to filter particles, so that higher efficiency and rapidness are realized.

Description

Technical Field

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[0001] This application belongs to the technical field of automotive air conditioners and relates to a dehumidifying and desorbing filter element based on a heating film. Background Art

[0002] In winter, the outdoor temperature is relatively low, and people are prone to generate fog in the cab of the vehicle, resulting in fogging on the window glass. Since electric vehicles do not have the engine preheating like fuel vehicles, defogging must use the air conditioning system of the electric vehicle itself, which is relatively power-consuming and further exacerbates the range anxiety of the battery. How to make electric vehicles more power-saving when using the defogging function in winter has become a practical need.

[0003] Currently, the existing dehumidification module adopts a structure in which a dehumidifying filter element and a PTC heater are placed one above the other. The PTC heater heats the air passing through it, and then the hot air convectively heats the dehumidifying filter element to achieve the purpose of desorbing the moisture in the filter element.

[0004] However, the above structure occupies more space and has a low desorption efficiency. Therefore, it is necessary to study a filter element that occupies less space and has a high adsorption and desorption efficiency. Utility Model Content

[0005] Based on the defects existing in the above-mentioned prior art solutions, the purpose of this application is to provide a dehumidifying and desorbing filter element based on a heating film. A dehumidifying and desorbing filter element based on a heating film proposed in this article combines a heating film with filter particles and uses heat conduction to heat the filter particles to desorb moisture, saving space and improving the heating efficiency at the same time.

[0006] In order to achieve the above purpose, this application provides the following technical solutions:

[0007] The technical solution of this application provides a dehumidifying and desorbing filter element based on a heating film, and the filter element includes the following structure:

[0008] A heating film, which is arranged in a continuous "zigzag" shape; or installed in a serpentine layout, and its main function is to provide a heating source;

[0009] Filter particles, which are filled in the "zigzag" gaps of the heating film; the heating film and the filter particles are in cross contact. The filter particles are of a filling type, and their main function is to absorb water vapor in the air and achieve the effect of drying the air humidity.

[0010] Furthermore, the dehumidifying and desorbing filter element is connected with a temperature and humidity sensor, and the temperature and humidity sensor has the functions of monitoring and control. The temperature and humidity sensor is used to monitor the water absorption saturation of the filter particles; when the temperature and humidity sensor monitors that the filter particles are water absorption saturated, it will control the heating film electrode to be energized to generate heat, so that the moisture in the filter particles evaporates and desorbs.

[0011] Further, the dehumidification and desorption filter element is installed in the automotive air-conditioning CMS system, and the air flow direction in the filter element is perpendicular to the plane where the "Ji" shape is located, that is Figure 2 the direction indicated by the upward arrow in the figure.

[0012] Further, the inlet of the dehumidification and desorption filter element is connected to the return air outlet of the cockpit air conditioner, and the outlet is connected to the desorption air duct for discharging the desorbed moisture. The return air outlet of the cockpit air conditioner is connected to the vehicle interior air system, and the desorption air duct is connected to the vehicle exterior air system.

[0013] Further, the material of the heating film is a PI film.

[0014] Further, the material of the filtering particles is silica gel particles, without a specified model. Generally, silica gel particles with the function of adsorbing and desorbing moisture on the market can be used.

[0015] Further, the size of the dehumidification and desorption filter element is 128mm * 217mm * 60cm.

[0016] Further, the present application provides a method for using the above dehumidification and desorption filter element based on a heating film: s

[0017] When the temperature is very low and the humidity is very high, the CMS system is turned on to start adsorbing the moisture in the cockpit. When the humidity difference between the inlet and outlet starts to increase, the temperature and humidity sensor automatically controls the opening of the CMS heating function to heat and release the absorbed moisture of the filtering particles. At this time, the external circulation is changed, and the moisture discharged by heating the silica gel particles is discharged outside the vehicle.

[0018] The working principle of the dehumidification and desorption filter element based on a heating film provided by the present utility model is as follows: The filtering particles in the filter element absorb the moisture in the passing air, but after a certain period of time, the water absorption of the filtering particles reaches saturation. At this time, after the temperature and humidity sensor monitors that the filtering particles are saturated with water absorption, it controls the heating film electrode to be powered on, and both sides of the heating film generate heat. The heat reaches the filtering particles in contact with it through heat conduction, so that the moisture in the filtering particles can be evaporated and desorbed, and is discharged through the desorption air duct; enabling the filtering particles to achieve the effect of desorption regeneration and reusable.

[0019] Compared with the prior art, the present application has at least the following improvements and beneficial effects:

[0020] (1) Space saving: The structure combining the heating film and the filtering particles makes the thickness of the entire filter element only the width of one heating film, with a size of 128mm * 217mm * 60cm, greatly reducing the space required for the filter element thickness compared to the original structure where the PTC heater (heating film) is in the front and the filtering particles are in the back.

[0021] (2) Improve heating efficiency: The structure of the heating film and the filter particles allows the heat generated on the heating film to be directly conducted to the filter particles, which makes the filter particles heat up faster and desorb water more efficiently. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a dehumidification and desorption filter element based on a heated film.

[0023] The markings in the diagram indicate: 1 represents the heating film, and 2 represents the filter particles;

[0024] Figure 2 This is a schematic diagram illustrating the working principle.

[0025] Figure 3 This is a cross-sectional view of the module installed in a ventilation duct.

[0026] Figure 4 This indicates the installation location of the module within the ventilation duct. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to specific embodiments. It should be noted that the following embodiments will help those skilled in the art to further understand this utility model, but do not limit this utility model in any way. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model. These all fall within the protection scope of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Example 1: A dehumidification and desorption filter element based on a heating film

[0030] Reference Figures 1-4 , in this example, a dehumidification and desorption filter element based on a heating film is first provided. The filter element includes two parts: a heating film 1 and filter particles 2. The heating film 1 has a continuous "zigzag" structure and is made of a PI film; the filter particles 2 are made of silica gel particles and are filled in the "zigzag" gaps of the heating film 1; the heating film 1 and the filter particles 2 are in cross contact. The size of the dehumidification and desorption filter element is 128mm * 217mm * 60cm. The dehumidification and desorption filter element is connected with a temperature and humidity sensor, and the temperature and humidity sensor has the functions of monitoring and control. The temperature and humidity sensor is used to monitor the water absorption saturation of the filter particles 2; when the temperature and humidity sensor monitors that the filter particles 2 are water absorption saturated, it will control the electrodes of the heating film 1 to be energized to generate heat, so that the moisture in the filter particles 2 evaporates and desorbs.

[0031] The dehumidification and desorption filter element is installed in the automotive air-conditioning CMS system, and the direction of air flow in the filter element is perpendicular to the plane where the "zigzag" is located, that is Figure 2 the direction indicated by the upward arrow in. The inlet of the dehumidification and desorption filter element is connected to the cockpit air-conditioning return air duct, and the outlet is connected to the desorption air duct for discharging the desorbed moisture.

[0032] The working principle of the dehumidification and desorption filter element is: after the air passes through the filter particles 2, it adsorbs water vapor, and the dry air flows out. When the adsorption rate of the filter particles 2 is relatively high, the heating film 1 is turned on to start heating. After the filter particles 2 are heated, they will desorb water vapor, so that it can be recycled and the service life of the filter particles 2 can be increased.

[0033] Example 2: The use effect of a dehumidification and desorption filter element based on a heating film

[0034] In this example, a dehumidification and desorption filter element based on a heating film provided in Example 1 is installed in the vehicle-mounted CMS system. The cockpit temperature is set at 22 - 24 degrees. One person sits in the cockpit. At this time, the temperature is very low and the humidity is very high. The CMS system is turned on and the vehicle is driven for one hour to test its performance. The moisture in the cockpit is adsorbed by the dehumidification and desorption filter element, and a total of 40g of moisture is dehumidified after 1h. When the humidity difference between the inlet and outlet starts to become larger, the temperature and humidity sensor will automatically control the opening of the CMS heating function to heat and release the adsorbed moisture of the silica gel particles. At this time, the external circulation is changed, and the moisture discharged by the silica gel heating is discharged outside the vehicle. After heating is turned on for 25 minutes, 40g of water is dehydrated. The monitoring and temperature control function of the temperature and humidity sensor is an operation that is easily achieved in the prior art and does not belong to the core point of improvement of this patent, so it will not be elaborated here.

[0035] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A dehumidification and desorption filter element based on a heated film, characterized in that, The filter element includes the following structures: A heating film, which is arranged continuously in a "Ji" shape and serves as the heating source; Filter particles (2), which are filled in the "Ji" shaped gaps of the heating film; the heating film is in cross contact with the filter particles (2).

2. The dehumidification and desorption filter element based on a heating film according to claim 1, characterized in that, The dehumidification and desorption filter element is connected with a temperature and humidity sensor.

3. A dehumidification and desorption filter element based on a heating film according to claim 2, characterized in that, The temperature and humidity sensor is used to monitor the water absorption saturation of the filter particles (2) and control the heating film to generate heat by being powered on.

4. The dehumidification and desorption filter element based on a heating film according to claim 1, characterized in that, The dehumidification and desorption filter element is installed in the automotive air-conditioning CMS system.

5. A dehumidification and desorption filter element based on a heating film according to claim 1, characterized in that, The inlet of the dehumidification and desorption filter element is connected to the return air outlet of the cabin air conditioner.

6. A dehumidification and desorption filter element based on a heating film according to claim 5, characterized in that, The return air outlet of the cabin air conditioner is connected to the vehicle interior air system.

7. A dehumidification and desorption filter element based on a heating film according to claim 1, characterized in that, The outlet of the dehumidification and desorption filter element is connected to the desorption air duct.

8. A dehumidification and desorption filter element based on a heating film according to claim 7, characterized in that, The desorption air duct is connected to the vehicle exterior air system.

9. A dehumidification and desorption filter element based on a heating film according to claim 1, characterized in that, The material of the heating film is a PI film.

10. A dehumidification and desorption filter element based on a heating film according to claim 1, characterized in that, The material of the filter particles (2) is silica gel particles.

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