CN111701388A - A controller for adjusting dew point with weak magnetic valve and its application - Google Patents

Abstract

The invention discloses a controller for adjusting the dew point with a weak magnetic force valve and its application. The air passages are respectively the intake passage through which the external air enters the space to be demisted and the exhaust passage through which the air inside the space to be demisted is discharged to the outside. Both the intake passage and the exhaust passage are provided with weak magnetic valve assemblies. The magnetic valve assembly moves under the action of you and the pressure difference between the inside and outside gas, and is used to control the opening and closing of the two-way air filter channel. Through the above method, the present invention does not require electric or mechanical transmission drive, and only relies on the air pressure difference on both sides of the valve to open and close it, so that the product structure is small and exquisite, the resistance torque generated by the weak magnetic force is small, and the slight pressure difference between the inside and outside of the lamp changes. The valve can be opened sensitively, and the ability to discharge hot and humid moisture to the outside and replenish dry air to the inside is completed.

Description

A controller for adjusting dew point with weak magnetic valve and its application

technical field

The invention relates to a controller for adjusting the dew point with a weak magnetic force valve and its application.

Background technique

In the prior art, in order to solve the problem of fog and condensation on the shell, many shell factories use desiccant bags such as silica gel, calcium chloride, bentonite, etc. in the shell. It is irreversible and non-reversible. The drying and agglomerating lifespan is short, and the desiccant needs to be replaced after 1~2 months of failure. Some shells are slightly larger in size and require 2~4 desiccant packs, occupying more space in the shell. It has a large space and is in contact with the electrical parts of the casing, and it is scattered due to impact and vibration during the driving of the car, causing increased after-sales maintenance costs and potential safety hazards to users.

Various auto OEMs are constantly launching new models. The appearance of the lights used in each model and the arrangement of internal components are different. In order to attract customers with a beautiful appearance, the curved shapes of the lights are diverse. This makes the internal air flow field of each car light irregular, and the fogging and condensation of the car lights has always been a problem that plagues the dissatisfaction of OEMs and consumers.

SUMMARY OF THE INVENTION

The main technical problem to be solved by the present invention is to provide a low-cost controller for adjusting the dew point with a weak magnetic force valve and its application, which has a lower cost, a better effect of eliminating fog and condensation, and is easy to mass-produce in a standardized manner.

In order to solve the above-mentioned technical problems, a technical solution adopted in the present invention is to provide a controller for adjusting the dew point with a weak magnetic force valve, the controller is arranged on the passage of the gas circulation inside and outside the space to be demisted, and includes a casing, a The core shell in the shell and the filter mixture filled in the core shell are provided with a set of two-way filter air passages between the filter mixtures, which are the air inlet passages for external air entering the space to be demisted and the air inside the space to be demisted to be discharged to the air inlet. The external exhaust channel, the intake channel and the exhaust channel are all provided with a weak magnetic valve assembly. close.

In a preferred embodiment of the present invention, the weak magnetic valve assembly on the intake passage is arranged on the side of the space to be demisted, and an intake buffer area is provided at the end of the intake passage. The gas in the intake passage enters the intake buffer area and passes through the After the filter mixture is hygroscopic, filtered and dried, the weak magnetic valve assembly is opened to enter the space to be defogged.

In a preferred embodiment of the present invention, the weak magnetic valve assembly on the exhaust passage is arranged on the outside of the atmosphere, and an exhaust buffer area is provided at the end of the exhaust passage. Gas buffer area, the gas is discharged to the outside after the weak magnetic valve assembly is opened.

In a preferred embodiment of the present invention, the exhaust passage further includes a rapid discharge passage. When the air pressure in the space to be demisted is at a peak, the high-humidity water vapor can directly enter the exhaust buffer area from the rapid discharge passage. When the magnetic valve assembly is opened, the gas is discharged to the outside.

In a preferred embodiment of the present invention, the weak magnetic valve assembly includes an encapsulation plate, a door plate and a weak magnetic force assembly. The encapsulation plate is used to encapsulate one side of the filter mixture and form a gas buffer area with the filter mixture, and one end of the door plate is connected to the package. The board is rotatably connected, and the other end attracts the weak magnetic force on the package board through a metal that is easily magnetized.

In a preferred embodiment of the present invention, the filter mixture includes one or more substances uniformly mixed with a substance capable of reversibly absorbing and dehydrating moisture and a substance sensitive to high-efficiency absorption of far-infrared radiation energy, and micropowder particles. Thin films with nanoporous structure.

In a preferred embodiment of the present invention, the reversible hygroscopic and dehydrating substances include: one of reversible desiccant, silica gel desiccant, bentonite, silica aerogel, carbon molecular sieve, zeolite, zeolite molecular sieve and water-absorbent resin or more; the micropowder particles of substances sensitive to efficiently absorbing far-infrared radiation energy include: one or more of carbon element products, biochar, tourmaline, far-infrared ceramics, zirconium carbide, metal oxides and silicon carbide.

In a preferred embodiment of the present invention, the film is an expanded polytetrafluoroethylene film and its modified film, plastic microporous films of other materials, non-woven fabrics or porous ceramics.

In a preferred embodiment of the present invention, the end face of the casing is provided with a group of fence holes for ventilation, and a microporous membrane sticker for ventilation and filtration that is resistant to rain, dust and oil is affixed to the corresponding positions on the inner side of the fence hole group. piece.

The invention also relates to the application of a controller for adjusting the dew point with a weak magnetic valve, which is applied to automobile lights, automobile radar ultrasonic reversing camera devices, camera monitors, optical electronics, precision instruments, meters, and new energy vehicle power battery packs. Or other shell spaces that need to eliminate fog condensation, moisture-proof, and short-circuit prevention of electrical circuits, connect with each shell in the form of a cover.

The beneficial effects of the present invention are as follows: the present invention does not require electric power or mechanical transmission drive, and only relies on the air pressure difference on both sides of the valve to open and close the valve, so that the product structure is small and exquisite, the resistance torque generated by the weak magnetic force is small, and the light inside and outside the vehicle lights slightly The change of pressure difference can make the valve open sensitively, complete the ability to discharge hot damp moisture outward and replenish dry air inward.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, under the premise of no creative work, other drawings can also be obtained from these drawings, wherein:

1 is a schematic structural diagram of a preferred embodiment of a controller for adjusting the dew point with a weak magnetic force valve according to the present invention;

Fig. 2 is a sectional view taken along the line A-A in the controller of Fig. 1 for adjusting the dew point with a weak field valve.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to FIG. 1 and FIG. 2, the embodiments of the present invention include:

A controller for adjusting the dew point with a weak magnetic valve, the controller is arranged on the passage of the air inside and outside the space 11 to be defogged. The present invention is preferably assembled with the space to be demisted 11 in the form of a cover by adhesive connection or interference connection, and the installation position is supported and positioned by the reinforcing ribs of the cover-shaped controller.

The controller includes a casing 1 , a core casing 9 provided in the casing 1 , and a filter mixture 10 filled in the core casing 9 .

The filtration mixture 10 includes one or more substances uniformly mixed with reversibly hygroscopic and dehydrating substances and highly efficient absorbing far-infrared radiation energy-sensitive micropowder particles.

Reversible hygroscopic and dehydrating substances include: reversible desiccant (activated alumina desiccant, magnesium chloride MgCl ₂ , magnesium chloride hexahydrate (MgCl ₂ 6H2O), etc.), silica gel desiccant, bentonite, silica aerogel, carbon molecular sieve, One or more of zeolite, zeolite molecular sieve and water-absorbent resin;

Efficiently absorbing far-infrared radiation energy-sensitive substance micropowder particles include one or more of the following materials:

Carbon products: carbon nanotubes, graphene, carbon aerogels, carbon molecular sieves and other particles.

Biochar: such as high-temperature bamboo charcoal, bincho charcoal, bamboo charcoal powder, bamboo charcoal powder fiber and various products.

Tourmaline: such as tourmaline ore, tourmaline particles, tourmaline powder, tourmaline micropowder textile fibers and various products.

Far-infrared ceramics: For example, high-negative ion and far-infrared materials such as tourmaline, Shenshan Maifan stone, Guiyang stone, and volcanic rock are used to mix ceramic materials for various purposes in different proportions, and then fired into particles.

Zirconium carbide, metal oxides and silicon carbide: zirconium carbide, dense and porous metal oxides (such as alumina), and loose and porous silicon carbide particles, etc., zirconium carbide has the characteristics of efficiently absorbing visible light, reflecting infrared rays and storing energy. . Because zirconium carbide has the characteristics of absorbing and storing heat and releasing infrared rays, the temperature of the contact material increases.

The material micropowder particles mixed in the filter mixture 10 that absorbs far-infrared radiation energy efficiently will be beneficial to radiation heat transfer absorption and to strengthen the dehydration and drying of functional materials. The usage amount of the functional substance mixture is determined according to the volume in the application object shell.

The film 8 is an expanded polytetrafluoroethylene film and its modified film, plastic microporous films of other materials, non-woven fabrics, or porous ceramics. The surface of the composite membrane material has abundant micro-nano pore structures that are permeable inside and outside, and water vapor can freely pass through the micro-nano pores.

The end face of the housing 1 is provided with a ventilation grille hole group 2 , and a microporous membrane patch 3 for ventilation and filtration for preventing rainwater, dust, and oil is pasted at the corresponding position on the inner side of the grille hole group 2 . It is preferable to use expanded polytetrafluoroethylene membrane or its modified membrane to prevent rainwater, dust and oil, and it is a microporous membrane patch for ventilation and filtration. The high level of environmental UV aging resistance and three-proof protection grade IP6K8K makes the interior of the lamp clean and pollution-free.

A set of two-way filter air passages are arranged between the filtered mixtures, which are the intake passage 4 through which the external air enters the space to be demisted 11 and the exhaust passage 5 through which the air inside the space to be demisted 11 is discharged to the outside. The exhaust passage 5 is provided with a weak magnetic valve assembly 6, and the weak magnetic valve assembly 6 moves under the action of the weak magnetic force and the gas pressure difference between the inside and outside, and is used to control the opening and closing of the two-way air filter passage.

The weak magnetic valve assembly 6 on the intake passage 4 is arranged on the side of the space to be demisted 11, and an intake buffer area 4-1 is provided at the end of the intake passage. The gas in the intake passage 4 enters the intake buffer area 4-1 and passes through the air intake buffer area 4-1. After the filtered mixture is hygroscopic, filtered and dried, the weak magnetic valve assembly 6 is opened to enter the space 11 to be demisted. The external air in the intake channel 4 is adsorbed and dried by the filter mixture and stays at the intake valve port. When the negative pressure in the lamp, the valve is opened to supply dry air, which is beneficial to keep the air in the lamp dry.

The weak magnetic valve assembly 6 on the exhaust passage 5 is set on the outside of the atmosphere, and an exhaust buffer area 5-1 is arranged at the end of the exhaust passage 5. The gas in the demisting space 11 enters the exhaust buffer after being filtered by the filter mixture 10 for moisture absorption. In zone 5-1, the weak magnetic valve assembly 6 is opened to discharge the gas to the outside.

The exhaust channel 5 also includes a fast exhaust channel 5-2, and the high-humidity water vapor in the air pressure peak in the space 11 to be defogged can directly enter the exhaust buffer area 5-1 from the fast exhaust channel. After the assembly 6 is opened, the gas is discharged to the outside.

There are 2 routes in the exhaust channel, which can quickly remove fog and continuously remove fog. Small structures can achieve large functions.

The weak magnetic valve assembly includes an encapsulation plate 6-1, a door plate 6-2 and a weak magnetic force assembly. The encapsulation plate 6-1 is used to encapsulate one side of the filter mixture 10 and form a gas buffer area with the filter mixture 10. The door plate 6- 2. One end is rotatably connected to the packaging board 6-1, and the other end is attracted to the weak magnetic force 6-4 on the packaging board through a metal 6-3 that is easily magnetized.

In the preferred structure of the present invention, a micro-miniature magnetic strip or soft magnetic sheet is injection-molded on the packaging board 6-1. The magnetic strip can be a straight strip or a ring strip or a magnetic cylinder. The door panel 6-2 is designed to be injection-molded with an easily magnetized Mild steel strips (can be straight strips or annular strips or iron cylinders), the position of the steel strips corresponds to the tiny magnetic strips. The tiny magnetic strips have a weaker The steel bar produces a pull-in force to close the valve. When there is a small air pressure difference between the inside and outside of the door panel 6-2, the air pressure on the high-pressure side overcomes the weaker magnetic force, and the valve can be opened to the low-pressure side to discharge or discharge. Enter the air to release the pressure until the internal and external pressures are balanced, and then under the action of the dead weight of the door panel 6-2 and the weak magnetic force, the valve remains closed, waiting for the unbalanced internal and external air pressure to open and close again sensitively.

The innovative application of the weak magnetic valve assembly does not require electric power or mechanical transmission drive, and only relies on the air pressure difference on both sides of the valve to open and close, making the product structure small and exquisite, the resistance torque generated by the weak magnetic force is small, and the light pressure inside and outside the light is slight. The difference change can make the valve open sensitively, and complete the ability to discharge hot and humid moisture to the outside and replenish dry air to the inside.

The working principle of applying the weak magnetic valve assembly to the car light defogging is: when the car light is on, the temperature rise of the light-emitting element or LED module in the car light rises, and the temperature of individual areas can reach about 100 degrees, making The air expansion pressure in the lamp increases, and at the same time, the micro-water adsorbed on the surface of each component inside the lamp is also vaporized into water vapor, which further increases the air pressure and humidity in the lamp. At this time, the air pressure inside the lamp is higher than that of the outside. The pressure of the atmospheric environment is strong, and there is a pressure difference of tens of KPa. This pressure difference pushes the weak magnetic valve to open, and quickly discharges humid and hot air to the atmosphere. At the same time, the filter mixture filled in the core shell also goes out with the temperature. Desorption discharges the internal micro-water, so that the filter mixture remains dry and regenerates the specific surface area reserved for adsorbed water molecules. After the internal and external pressures are balanced, the weak magnetic valve is closed. At this time, the filter mixture filled in the core shell is continuously adsorbed. Store the water molecules of the lamp to keep the air humidity in the lamp at a low level <RH30%~RH40% relative humidity. At this time, even if the temperature of the external environment is low at the dew point state, due to the internal The water molecules in the dry low-humidity air are in an unsaturated state, so there is no excess water molecules to precipitate fog and condensation on the smooth glass bulb mirror surface with temperature difference, so that the lighting effect of the car lights can be effectively exerted and driving safety is ensured. .

When the car is parked, the temperature in the lamp is gradually decreasing, and the air pressure in the lamp is decreasing. When the pressure in the lamp is negative, the external atmosphere will be opened through the weak magnetic valve after drying, and the dry air will be added to the lamp. Air until the internal and external pressures are balanced, and the weak magnetic valve remains closed under the action of its own weight and magnetic force.

Since the lamp is filled with dried air, and the filter mixture filled in the core shell continuously absorbs the water molecules in the lamp, the humidity in the lamp will be maintained at a low level. After several rounds After turning on the lights and turning off the lights and parking, the air humidity in the lights will drop to a lower value, and the controller of the present invention keeps the air in the lights in a dry and stable state, thereby eliminating the phenomenon of fog and condensation of the lights.

The application of the controller that adjusts the dew point with the weak magnetic valve, which is used in automobile lights, automobile radar ultrasonic reversing camera, camera monitor, optical electronics, precision instruments, meters, new energy vehicle power battery packs or other applications that need to eliminate fog and condensation In the shell space that is protected from dew, moisture, and short circuit of electrical circuits, it can be used for a long time without maintenance during the service life, which greatly reduces the later cost of customers.

The demisting working principle of the present invention applied to other housing spaces is the same as the above-mentioned lamp housing.

The innovative application of the weak magnetic valve does not require electric or mechanical transmission drive, and only relies on the air pressure difference on both sides of the valve to open and close, making the product structure small and exquisite, the resistance torque generated by the weak magnetic force is small, and the slight pressure difference between the inside and outside of the lights Changes can be sensitive to open the valve, complete the ability to discharge hot and humid moisture outward and replenish dry air inward.

The above descriptions are only the embodiments of the present invention, and are not intended to limit the scope of the patent of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description of the present invention, or directly or indirectly applied in other related technical fields, are all applicable. Similarly, it is included in the scope of patent protection of the present invention.

Claims (10)

1. A controller for adjusting the dew point with a weak magnetic force valve, characterized in that, the controller is arranged on the passage of gas circulation inside and outside the space to be demisted, comprising a shell, a core shell arranged in the shell, and a core shell filled in the core shell. There is a set of two-way filter air passages between the filter mixtures, which are the intake passage for the outside air to enter the space to be demisted and the exhaust passage for the air inside the space to be demisted to be discharged to the outside. A weak magnetic valve assembly is arranged on the exhaust passage, and the weak magnetic valve assembly moves under the action of the weak magnetic force and the gas pressure difference between the inside and outside, and is used to control the opening and closing of the two-way air filter passage. 2. The controller for adjusting dew point with a weak magnetic force valve according to claim 1, characterized in that, the weak magnetic valve assembly on the intake passage is arranged on the side of the space to be demisted, and an intake buffer area is provided at the end of the intake passage , after the gas in the intake passage enters the intake buffer area, after the filter mixture is hygroscopic, filtered and dried, the weak magnetic valve assembly is opened to enter the space to be demisted. 3. The controller for adjusting the dew point with a weak magnetic force valve according to claim 1, wherein the weak magnetic valve assembly on the exhaust passage is arranged on the outside of the atmosphere, and an exhaust buffer area is provided at the end of the exhaust passage to be removed. The gas in the mist space enters the exhaust buffer area after hygroscopic filtering by the filter mixture, and the weak magnetic valve assembly is opened to discharge the gas to the outside. 4. The controller for adjusting the dew point with a weak magnetic force valve according to claim 3, wherein the exhaust passage further comprises a fast discharge passage, and the high-humidity water vapor when the air pressure peaks in the space to be defogged can be removed. It directly enters the exhaust buffer area from the fast exhaust channel, and the weak magnetic valve assembly is opened to discharge the gas to the outside. 5. The controller for adjusting the dew point with a weak magnetic force valve according to claim 1, wherein the weak magnetic valve assembly comprises an encapsulation plate, a door plate and a weak magnetic force assembly, and the encapsulation plate is used to encapsulate one side of the filtered mixture, and is combined with the filtration mixture. A gas buffer area is formed between the filtered mixtures, one end of the door panel is rotatably connected to the packaging board, and the other end attracts the weak magnetic force on the packaging board through easily magnetized metal. 6. The controller for adjusting the dew point with a weak magnetic force valve according to claim 1, wherein the filter mixture comprises a mixture of reversible hygroscopic and dehydrating substances and one or more mixtures of micropowder particles that are sensitive to high-efficiency absorption of far-infrared radiation energy A homogeneous substance, at least one end face of the mixture is connected with a thin film with a nanoporous structure. 7. The controller for adjusting dew point with a weak magnetic force valve according to claim 6, wherein the reversible hygroscopic and dehydrating substances include: reversible desiccant, silica gel desiccant, bentonite, silica aerogel, carbon molecular sieve One or more of , zeolite, zeolite molecular sieve and water-absorbent resin; micropowder particles of materials sensitive to high-efficiency absorption of far-infrared radiation energy include: carbon element products, biochar, tourmaline, far-infrared ceramics, zirconium carbide, metal oxides and one or more of silicon carbide. 8. The controller for adjusting dew point with a weak magnetic force valve according to claim 6, wherein the film is expanded polytetrafluoroethylene film and its modified film, plastic microporous film of other materials, non-woven cloth or porous ceramic. 9 . The controller for adjusting the dew point with a weak magnetic force valve according to claim 1 , wherein the end face of the casing is provided with a group of fence holes for ventilation, and the corresponding positions on the inside of the fence hole group are affixed with anti-rain, Dust-proof, oil-proof, breathable and filtered microporous membrane patch. 10. The application of the controller for adjusting the dew point with a weak magnetic valve according to any one of claims 1-9, characterized in that it is applied to automobile lights, automobile radar ultrasonic reversing camera devices, camera monitors, optical electronics, precision Instruments, meters, new energy vehicle power battery packs, or other housing spaces that need to eliminate fog and condensation, moisture-proof, and short-circuit protection of electrical circuits are connected to each housing in the form of a cover.

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