CN209833298U - Dust absorption prevention device for automobile air conditioner - Google Patents
Dust absorption prevention device for automobile air conditioner Download PDFInfo
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- CN209833298U CN209833298U CN201920373439.7U CN201920373439U CN209833298U CN 209833298 U CN209833298 U CN 209833298U CN 201920373439 U CN201920373439 U CN 201920373439U CN 209833298 U CN209833298 U CN 209833298U
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- sensor
- air conditioner
- automobile air
- external circulation
- automobile
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Abstract
The utility model provides a dust absorption device is prevented to vehicle air conditioner especially is used for the vehicle air conditioner field. The air inlet pipe is of an arc structure, and an inner cavity of the main pipe body is provided with an induction circuit; the utility model monitors the dust concentration of the outside air by arranging the induction circuit, when the dust concentration in the outside air is too high, the whole device is in a closed state, and the automobile air-conditioning system enters an internal circulation working state for a short time; when the dust concentration of the outside air is low, the automobile air conditioning system enters an external circulation state, and the whole device is in a working state, so that the defect that the automobile air conditioning system cannot identify the quality of the outside air is overcome, the automatic adjustment of the internal and external circulation working conditions of the automobile air conditioning system according to the outside air condition is realized, and the air quality of a cab is improved.
Description
Technical Field
The utility model relates to an automobile air conditioner field specifically is an automobile air conditioner prevents inhaling grey device.
Background
The photoelectric particle concentration sensor is a particle detector based on the principle that smoke particles scatter and absorb (or shield) light. There are fewer applications for light-reducing (or light-shielding) photoelectric particle concentration sensors. Most of the current production and application at home and abroad are scattered light type photoelectric particle concentration sensors which are based on the principle of light scattering; the photoelectric smoke detection technology mostly works by adopting a scattered light principle, and the basic principle is as follows: when no particles exist in the sensitive space, ambient light outside the shell of the detector is blocked by the labyrinth and basically cannot enter the sensitive space, the infrared photosensitive diode can only receive background light formed by the infrared light beams reflected in the sensitive space for multiple times, so that photocurrent is not generated, and the circuit is in a normal monitoring working state. When the particles enter a sensitive space surrounded by the labyrinth, the particles absorb incident light and emit light to the periphery at the same wavelength, and after part of scattered light is received by the infrared photosensitive diode, the impedance of the light receiving element is changed to form photocurrent, so that the function of converting smoke signals into electric signals is realized.
In an automobile air conditioning system, an internal circulation mode and an external circulation mode are adopted, and when the quality of air outside an automobile is poor and pollution is serious, for example, roads with dust flying, congested road sections, roads near chemical plants and the like with odor or peculiar smell and the like, the internal circulation mode is adopted. The external circulation mode is adopted when the air in the vehicle is not changed for a long time. The internal and external circulation of the automobile is to control an internal and external circulation turning plate in an air inlet system by a driver manually operating an internal and external circulation control button.
When a car always passes through a road section with dust flying or peculiar smell, even if an air conditioning filter element is arranged in an automobile air conditioning system, the dust and harmful gas in the air are difficult to be filtered by 100 percent, the aging of the air conditioning filter element is aggravated when the car is driven on the road section for a long time, and a driver cannot open or close the air conditioning system at any time. Otherwise, the air conditioning system of the vehicle is often in a very harsh working environment, and the quality of the supplied air is also poor. If the external circulation of the automobile air conditioner is closed for a long time and the internal circulation is used, the air in the automobile is also polluted, and the health and the mood of a driver and passengers are influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a car air conditioner prevents inhaling grey device to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a car air conditioner prevents inhaling grey device, is including being responsible for the body, is responsible for the body and is that the lower extreme is open tubular structure, is responsible for the bottom through connection intake pipe of the body, is responsible for the open-top of the body and is equipped with the apron, evenly is equipped with a plurality of gas pockets on the apron, and the intake pipe is the arc structure, is responsible for the inner chamber of the body and is equipped with induction circuit.
In order to further improve the using effect of the dust absorption prevention device of the automobile air conditioner, the area of the bottom end port of the air inlet pipe is 100mm2The area of one end port of the air inlet pipe close to the main pipe body is 1000mm2。
In order to further improve the using effect of the dust absorption prevention device of the automobile air conditioner, the air inlet pipe is connected with the main pipe body through a screw, and a sealing ring is arranged at the joint between the air inlet pipe and the main pipe body.
In order to further improve the use effect of the dust absorption prevention device of the automobile air conditioner, the induction circuit comprises an induction circuit board, an air conditioner internal and external circulation turning plate and an instrument fault lamp, a control chip, a first sensor and a second sensor are arranged on the induction circuit board, a sensitivity adjusting knob is arranged on the control chip, the control chip is connected with the air conditioner internal and external circulation turning plate through a signal interface OUT0, the control chip is connected with the instrument fault lamp through a signal interface ERR, and the first sensor and the second sensor are respectively connected with the control chip through an amplifier.
In order to further improve the use effect of an automobile air conditioner dust absorption prevention device, the first sensor and the second sensor are both provided with photoelectric particulate matter sensors.
In order to further improve the using effect of the dust absorption prevention device of the automobile air conditioner, the failure judgment standard of the first sensor or the second sensor is as follows: when the control chip receives signals of the first sensor and the second sensor, whether the output values of the first sensor and the second sensor are close or not is judged firstly, namely:
P1-P2＜M
in the formula: p1-the first sensor output voltage
P2-second sensor output voltage
M-fault judgment threshold, factory calibration
If not, judging that a certain sensor is invalid, outputting an error signal to an instrument fault lamp if the ERR pin value in the signal interface is 1, and alarming that the sensor is invalid.
In order to further improve the use effect of the dust absorption prevention device of the automobile air conditioner, the switching standard of the internal and external circulation working conditions of the automobile air conditioner is as follows: when the detection values of the two sensors are valid, the final detection result is obtained:
when the detection result P is larger than the preset value b, the concentration of particles such as dust in the outside air is judged to be too high, and the signal port OUT0 has a value of 1, so that the external circulation of the automobile air conditioner is closed; and when the P is smaller than a preset value b, the external circulation of the automobile air conditioner is started, wherein the b is preset comparison voltage, namely the lowest threshold value for controlling the switching of the internal circulation and the external circulation, and the preset comparison voltage can be adjusted through a sensitivity adjusting knob.
Compared with the prior art, the dust concentration of the outside air is monitored by arranging the induction circuit, when the dust concentration of the outside air is too high, the whole device is in a closed state, and the automobile air-conditioning system enters an internal circulation working state for a short time; when the dust concentration of the outside air is low, the automobile air conditioning system enters an external circulation state, and the whole device is in a working state, so that the defect that the automobile air conditioning system cannot identify the quality of the outside air is overcome, the automatic adjustment of the internal and external circulation working conditions of the automobile air conditioning system according to the outside air condition is realized, and the air quality of a cab is improved.
Drawings
FIG. 1 is a schematic structural view of an anti-dust device of an automobile air conditioner;
FIG. 2 is a schematic structural diagram of an induction circuit of the dust absorption preventing device of the air conditioner of the present invention;
FIG. 3 is a schematic diagram of an induction circuit of the dust absorption preventing device of the air conditioner of the present invention;
fig. 4 is a schematic diagram of a control flow chart of an induction circuit of the dust absorption preventing device of the air conditioner for the vehicle.
In the figure: 1-air inlet pipe, 2-main pipe body, 3-induction circuit and 4-cover plate.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Example 1
Referring to fig. 1 to 4, an anti-dust suction device for an automobile air conditioner comprises a main pipe body 2, wherein the upper end and the lower end of the main pipe body 2 are both open tubular structures, the bottom end of the main pipe body 2 is connected with an air inlet pipe 1 in a through manner, a cover plate 4 is arranged at an opening at the top end of the main pipe body 2, a plurality of air holes are uniformly formed in the cover plate 4, the air inlet pipe 1 is of an arc-shaped structure, and the area of a bottom end port of the air inlet pipe 1 is 1002The area of one end port of the air inlet pipe 1 close to the main pipe body 2 is 1000mm2The inner cavity of the main pipe body 2 is provided with an induction circuit 3, the concentration of dust in the outside air is monitored by arranging the induction circuit 3, when the concentration of the dust in the outside air is too high, the whole device is in a closed state, and the automobile air conditioning system enters an internal circulation working state for a short time; when the dust concentration of the outside air is low, the automobile air conditioning system enters an external circulation state, and the whole device is in a working state, so that the defect that the automobile air conditioning system cannot identify the quality of the outside air is overcome, the automatic adjustment of the internal and external circulation working conditions of the automobile air conditioning system according to the outside air condition is realized, and the air quality of a cab is improved.
The air inlet pipe 1 is connected with the main pipe body 2 through screws, so that later-stage disassembly and maintenance are facilitated; the junction between intake pipe 1 and the main pipe body 2 is equipped with the sealing washer to guarantee the leakproofness between intake pipe 1 and the main pipe body 2, guarantee the ventilation effect.
Example 2
The embodiment is further explained on the basis of embodiment 1, the sensing circuit 3 includes a sensing circuit board, an air conditioner internal and external circulation turning plate and an instrument fault lamp, the sensing circuit board is provided with a control chip, a first sensor and a second sensor, the control chip is provided with a sensitivity adjusting knob, the control chip is connected with the air conditioner internal and external circulation turning plate through a signal interface OUT0, the control chip is connected with the instrument fault lamp through a signal interface ERR, the first sensor and the second sensor are respectively connected with the control chip through an amplifier, the first sensor and the second sensor both use photoelectric particulate matter sensors for sensing, when the external air quality is good, no voltage is generated on both sides of the first sensor and the second sensor, and the signal interface OUT0 is pulled down; when the first sensor and the second sensor sense suspended particles, voltage is generated, the signal passes through the amplifier and then is connected to the control chip, and the concentration of the particles is positively correlated with the voltage.
When the control chip receives signals of the first sensor and the second sensor, whether the output values of the first sensor and the second sensor are close or not is judged firstly, namely:
P1-P2＜M
in the formula: p1-the first sensor output voltage
P2-second sensor output voltage
M-fault judgment threshold, factory calibration
If not, judging that a certain sensor is invalid, outputting an error signal to an instrument fault lamp if the ERR pin value in the signal interface is 1, and alarming that the sensor is invalid.
When the detection values of the two sensors are valid, the final detection result is obtained:
when the detection result P is larger than the preset value b, the concentration of particles such as dust in the outside air is judged to be too high, and the signal port OUT0 has a value of 1, so that the external circulation of the automobile air conditioner is closed; and when the P is smaller than a preset value b, the external circulation of the automobile air conditioner is started, wherein the b is preset comparison voltage, namely the lowest threshold value for controlling the switching of the internal circulation and the external circulation, and the preset comparison voltage can be adjusted through a sensitivity adjusting knob.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (7)
1. The utility model provides an automobile air conditioner prevents inhaling grey device, is including being responsible for the body (2), is responsible for body (2) about the end be open tubular structure, is responsible for the bottom through connection intake pipe (1) of the body (2), is responsible for the top opening of the body (2) and is equipped with apron (4), its characterized in that, the even a plurality of gas pockets that are equipped with on apron (4), intake pipe (1) are the arc structure, is responsible for the inner chamber of the body (2) and is equipped with induction circuit (3).
2. The dust absorption preventing device for the air conditioner of the automobile as claimed in claim 1, wherein the area of the bottom end port of the air inlet pipe (1) is 100mm2The area of one end port of the air inlet pipe (1) close to the main pipe body (2) is 1000mm2。
3. The automobile air conditioner dust absorption prevention device according to claim 2, wherein the air inlet pipe (1) is connected with the main pipe body (2) through a screw, and a sealing ring is arranged at the connection position between the air inlet pipe (1) and the main pipe body (2).
4. The dust absorption preventing device for the automobile air conditioner according to claim 2 or 3, wherein the sensing circuit (3) comprises a sensing circuit board, an air conditioner internal and external circulation turning plate and an instrument fault lamp, the sensing circuit board is provided with a control chip, a first sensor and a second sensor, the control chip is provided with a sensitivity adjusting knob, the control chip is connected with the air conditioner internal and external circulation turning plate through a signal interface OUT0, the control chip is connected with the instrument fault lamp through a signal interface ERR, and the first sensor and the second sensor are respectively connected with the control chip through an amplifier.
5. The dust absorption preventing device for the air conditioner of the vehicle as claimed in claim 4, wherein the first sensor and the second sensor are both photoelectric particulate matter sensors.
6. The dust absorption preventing device for the air conditioner of the vehicle as claimed in claim 5, wherein the failure judgment criteria of the first sensor or the second sensor are: when the control chip receives signals of the first sensor and the second sensor, whether the output values of the first sensor and the second sensor are close or not is judged firstly, namely:
P1-P2<M
in the formula: p1-the first sensor output voltage
P2-second sensor output voltage
M-failure determination threshold
If not, judging that a certain sensor is invalid, outputting an error signal to an instrument fault lamp if the ERR pin value in the signal interface is 1, and alarming that the sensor is invalid.
7. The automobile air conditioner dust absorption preventing device according to claim 6, wherein the switching standard of the internal and external circulation working conditions of the automobile air conditioner is as follows: when the detection values of the two sensors are valid, the final detection result is obtained:
when the detection result P is larger than the preset value b, the concentration of particles such as dust in the outside air is judged to be too high, and the signal port OUT0 has a value of 1, so that the external circulation of the automobile air conditioner is closed; and when the P is smaller than a preset value b, the external circulation of the automobile air conditioner is started, wherein the b is preset comparison voltage, namely the lowest threshold value for controlling the switching of the internal circulation and the external circulation, and the preset comparison voltage can be adjusted through a sensitivity adjusting knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920373439.7U CN209833298U (en) | 2019-03-22 | 2019-03-22 | Dust absorption prevention device for automobile air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920373439.7U CN209833298U (en) | 2019-03-22 | 2019-03-22 | Dust absorption prevention device for automobile air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209833298U true CN209833298U (en) | 2019-12-24 |
Family
ID=68907626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920373439.7U Expired - Fee Related CN209833298U (en) | 2019-03-22 | 2019-03-22 | Dust absorption prevention device for automobile air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209833298U (en) |
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2019
- 2019-03-22 CN CN201920373439.7U patent/CN209833298U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191224 Termination date: 20210322 |