CN118124522A - Defrosting and demisting system - Google Patents

Abstract

The application relates to a defrosting and demisting system. The defrosting and demisting system comprises: the defrosting system is connected with the air conditioning system of the vehicle and is used for defrosting when the glass of the vehicle frosts; the defrosting system is arranged below an instrument of the vehicle and comprises a heater, a connecting air pipe and an instrument board air channel, an air outlet of the heater is connected with one end of the connecting air pipe, an air inlet of the instrument board air channel is connected with the other end of the connecting air pipe, the instrument board air channel is arranged in the instrument board of the vehicle, and the heater is arranged below the instrument of the vehicle; the defogging system is connected with the air conditioning system of the vehicle and is used for preventing window glass of the vehicle from fogging; the defogging system is arranged in the interior trim part above the front windshield glass of the vehicle; and the control system is connected with the defrosting system and the defogging system and is used for controlling the automatic start and stop of the defrosting system and the defogging system. The application improves the defrosting efficiency by using the heater and the instrument board air duct, ensures that the defrosting effect is uniform and consistent, and rapidly demists by using the cold air function of the air conditioning system.

Description

Defrosting and demisting system

Technical Field

The application relates to the technical field of vehicle air conditioning systems, in particular to a defrosting and demisting system.

Background

During the running process of the automobile, the design and the efficiency of the defrosting and demisting system are critical to the safety of a driver. The system processes frost and fog on the vehicle window by utilizing an air heating or non-heating mode, so that clear sight of a driver is ensured, and driving safety is improved.

In the related art, an automobile defrost defogging system uses air in an air conditioning system inside a vehicle to perform heating or non-heating treatment. These systems remove frost and fog from the windows of the vehicle by drawing air from the vehicle and then blowing it toward the front windshield through an air outlet above the dashboard. Under the condition of heating, the system can blow the air in the vehicle to the glass after heating so as to accelerate the melting of frost and fog, thereby realizing the defrosting effect. Under the condition of no heating, the system directly blows the air in the vehicle to the glass so as to reduce fog on the vehicle window and realize the defogging effect.

However, this technique has some obvious drawbacks. First, when the temperature outside the vehicle is low, defrosting efficiency is low by using the air heating mode in the vehicle in the whole process. Because the temperature of the air in the vehicle is relatively high, there is a small temperature difference compared with the temperature outside the vehicle, so the heating effect is limited, and a long time may be required to completely defrost. Secondly, even under defogging mode, because the inside and outside temperature of car is close, can't effectively utilize the difference in temperature to accelerate defogging speed, lead to defogging effect not good, influence driver's sight definition.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a defrost defogging system that can efficiently defrost and defog.

In a first aspect, the present application provides a defrost defogging system comprising:

The defrosting system is connected with the air conditioning system of the vehicle and is used for defrosting when the glass of the vehicle frosts; the defrosting system is arranged below an instrument of the vehicle and comprises a heater, a connecting air pipe and an instrument board air channel, an air outlet of the heater is connected with one end of the connecting air pipe, an air inlet of the instrument board air channel is connected with the other end of the connecting air pipe, the instrument board air channel is arranged in the instrument board of the vehicle, and the heater is arranged below the instrument of the vehicle;

the defogging system is connected with the air conditioning system of the vehicle and is used for preventing window glass of the vehicle from fogging; the defogging system is arranged in the interior trim part above the front windshield glass of the vehicle;

And the control system is connected with the defrosting system and the defogging system and is used for controlling the automatic start and stop of the defrosting system and the defogging system.

In one embodiment, the heater comprises a box body, an air inlet assembly and a temperature regulating assembly, wherein the box body comprises a ventilation cavity, the ventilation cavity comprises a front half cavity and a rear half cavity, the air inlet assembly is arranged in the front half cavity, the temperature regulating assembly is arranged in the rear half cavity, and an air outlet end of the ventilation cavity is connected with one end of the connecting air duct.

In one embodiment, the air inlet end of the ventilation cavity comprises an air inlet door, an in-vehicle air inlet port and an out-vehicle air inlet port, the in-vehicle air inlet port and the out-vehicle air inlet port are adjacently arranged, and the air inlet door is used for controlling on-off of the in-vehicle air inlet port and the out-vehicle air inlet port.

In one embodiment, the air intake assembly includes a blower mounted within the front half cavity and an air cleaner disposed at a front end of an air intake of the blower.

In one embodiment, an air duct bifurcation board is arranged in the second half cavity, and the second half cavity is divided into a cold air duct and a hot air duct by the air duct bifurcation board.

In one embodiment, the temperature adjusting component comprises a cold air door, a hot air door and a heating unit, wherein the cold air door is arranged at an air inlet of the cold air duct, the hot air door is arranged at the air inlet of the hot air duct, and the heating unit is arranged in the hot air duct.

In one embodiment, the demisting system comprises a cold air pipe and a cold air distribution box, wherein the cold air distribution box is arranged on the roof of the vehicle, an air inlet of the cold air distribution box is connected with an air outlet of a roof air conditioner of the vehicle, and an air inlet of the cold air pipe is connected with the cold air distribution box.

In one embodiment, the cold air distribution box comprises a side air outlet and a lower air outlet, wherein the side air outlet is connected with the air inlet of the cold air duct, and the lower air outlet is provided with an air outlet door.

In one embodiment, the cool air duct includes a plurality of duct outlets disposed below the interior trim above the vehicle windshield.

In one embodiment, the control system comprises a control module and a control panel, wherein the control panel is connected with the control module, and the defrosting system and the defogging system are both connected with the control module;

The control panel is used for selecting a defrosting function or a defogging function;

the control module is used for automatically controlling the defrosting system or the defogging system after the defrosting function or the defogging function is selected.

According to the defrosting and defogging system, the defrosting system or the defogging system is selected to operate through the control system based on the vehicle condition, when the defrosting system is selected to operate, the heater in the vehicle is utilized, warm air is sent to the front windshield glass to efficiently remove frost on the surface of the glass, the heater can rapidly heat the air in the vehicle to a proper temperature, so that defrosting efficiency is improved, meanwhile, hot air can be evenly sent to the vehicle window due to the arrangement position of the instrument board air channel, and the defrosting effect is ensured to be uniform; when the defogging system is selected to work, the cold air function of the air conditioning system is utilized, the surface temperature of glass is reduced rapidly by blowing cold air to the front windshield glass, so that fog on the glass is removed efficiently, the effect of rapid defogging is achieved, the temperature in a vehicle can be reduced effectively, and the driving comfort level is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is one of the system blocks of a defrost and defog system provided in one embodiment;

FIG. 2 is a second system block diagram of a defrost defogging system according to an embodiment;

FIG. 3 is a schematic diagram of a defrosting system according to an embodiment;

FIG. 4 is a schematic view of the structure of the interior of a case according to an embodiment;

FIG. 5 is a schematic diagram of a demisting system according to an embodiment;

FIG. 6 is a schematic diagram of a demisting system according to a second embodiment.

Reference numerals illustrate:

10-a defrosting system, 20-a defogging system and 30-a control system;

110-heater, 120-connecting air pipe, 130-instrument board air duct;

111-a box body, 112-an air inlet door, 113-an in-vehicle air inlet port, 114-an out-vehicle air inlet port and 115-a blower; 116-an air cleaner; 117-a cool air damper; 118-a hot air damper; 119-a heating unit;

210-cold air pipes and 220-cold air distribution boxes;

221-an air outlet door;

310-a control panel; 320-control module.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

Referring to fig. 1, fig. 1 shows a system block diagram of a defrosting and defogging system according to an embodiment of the present application, and the defrosting and defogging system according to an embodiment of the present application includes a defrosting system 10, a defogging system 20 and a control system 30, wherein the defrosting system 10 and the defogging system 20 are connected to the control system 30, and the defrosting system 10 and the defogging system 20 are connected to an air conditioning system of a vehicle.

Referring to fig. 2, fig. 2 shows a system block diagram of a defrosting and demisting system according to another embodiment of the present application, wherein a control system 30 of the defrosting and demisting system includes a control panel 310 and a control module 320, the control panel 310 is connected with the control module 320, and both the defrosting system 10 and the demisting system 20 are connected with the control module 320.

Referring to fig. 3, fig. 3 shows a schematic structural diagram of a defrosting and demisting system according to an embodiment of the present application, and the defrosting and demisting system 10 according to an embodiment of the present application includes a heater 110, a connecting air duct 120 and an instrument panel air duct 130, wherein the heater 110 is disposed under a vehicle instrument, the instrument panel air duct 130 is disposed in an instrument panel of the vehicle, one end of the connecting air duct 120 is connected with the heater 110, and the other end of the connecting air duct 120 is connected with the instrument panel air duct 130.

With continued reference to fig. 3, and in conjunction with fig. 1 and 2, when a frosting condition occurs on the windows of the vehicle, the driver selects a defrost function in the control system 30, and the control system 30 activates the defrost system 10. The heater 110 of the defrosting system 10 is activated, and the air flowing through the heater 110 is heated to obtain defrosting air, and the defrosting air flows through the connecting air pipe 120 to the instrument panel air duct 130, and is blown out from the air outlet of the instrument panel and blown to the windshield.

The defrosting and defogging system is characterized in that the defrosting system 10 is selected to operate through the control system 30 based on the frosting condition of the vehicle, and when the defrosting system 10 is selected to operate, the heater 110 which circulates in the vehicle is utilized to send warm air to the front windshield glass so as to efficiently remove frost on the surface of the glass, and the heater 110 can rapidly heat the air in the vehicle to a proper temperature, so that the defrosting efficiency is improved, and meanwhile, the hot air can be evenly sent to the vehicle window due to the arrangement position of the instrument board air duct 130, so that the defrosting effect is ensured to be even and consistent.

In one exemplary embodiment, the heater 110 includes a housing 111, an air inlet assembly, and a temperature regulating assembly, the housing 111 including a ventilation cavity having an air outlet end connected to one end of a connection duct. The air inlet assembly is arranged in the front half cavity of the ventilation cavity, and the temperature adjusting assembly is arranged in the rear half cavity of the ventilation cavity.

Referring to fig. 4, fig. 4 shows a schematic structural diagram of the inside of a box 111 according to an embodiment of the present application, and an air inlet end of a ventilation cavity of the box 111 provided by an embodiment of the present application includes an air inlet door 112, an in-vehicle air inlet port 113 and an out-vehicle air inlet port 114, where the in-vehicle air inlet port 113 and the out-vehicle air inlet port 114 are adjacently disposed. The air intake damper 112 is disposed near the in-vehicle air intake port 113 and the out-of-vehicle air intake port 114, and the air intake damper 112 is switched between a mode of blocking the in-vehicle air intake port 113 and a mode of blocking the out-of-vehicle air intake port 114. In one embodiment, the air intake door 112 is connected to a motor, which is disposed near the in-vehicle air intake port 113 and the out-vehicle air intake port 114, and the air intake door 112 is driven to rotate by the motor.

In this embodiment, by controlling the air inlet door 112 to switch between the mode of shielding the in-vehicle air inlet port 113 and the mode of shielding the out-vehicle air inlet port 114, the defrosting system 10 can flexibly select the most suitable defrosting mode according to different climatic conditions and vehicle operating environments, thereby improving defrosting efficiency.

With continued reference to FIG. 4, in one exemplary embodiment, the air intake assembly includes a blower 115 and an air cleaner 116, the blower 115 being mounted within the front half of the ventilation cavity, the air cleaner 116 being disposed at the front end of the air intake of the blower 115.

When the blower 115 is started to operate, air is sucked into the front half of the ventilation cavity from the air inlet end of the ventilation cavity, and the air flows through the air cleaner 116 to remove particles or dust in the air, and then the cleaned air is conveyed into the rear half of the ventilation cavity.

In this embodiment, by providing the air cleaner 116 at the front end of the air intake of the blower 115, the air quality is improved, erosion of dust, dirt, etc. to equipment is reduced, the service life of equipment is prolonged, the frequency of maintenance and replacement is reduced, and the influence on personnel in the vehicle is reduced.

With continued reference to fig. 4, in one exemplary embodiment, the rear half of the ventilation cavity is provided with a duct bifurcation panel, the rear half being divided into a cool air duct and a warm air duct by the duct cavity. In one embodiment, the temperature adjusting component disposed in the second half cavity includes a cold air door 117, a hot air door 118, and a heating unit 119, wherein the cold air door 117 is disposed at an air inlet of the cold air duct, the hot air door 118 is disposed at the air inlet of the hot air duct, and the heating unit 119 is disposed in the hot air duct.

In the actual running process, a driver selects a function in the defrosting and demisting system according to the vehicle condition, selects any one of the cold air duct and the hot air duct to be conducted based on the function and the scene, namely selects any one of the cold air door 117 and the hot air door 118 to be opened, and further realizes the selected defrosting function or demisting function.

Referring to fig. 3 and 4, in one exemplary embodiment, the defrost system 10 includes a heater 110, a connecting air duct 120, and an instrument panel air duct 130, the heater 110 being disposed under a vehicle instrument, the instrument panel air duct 130 being disposed in an instrument panel of the vehicle, one end of the connecting air duct 120 being connected with an air outlet of the heater 110, and the other end of the connecting air duct 120 being connected with an air inlet of the instrument panel air duct 130.

The heater 110 includes box 111, air inlet subassembly and temperature regulation subassembly, and box 111 includes ventilation cavity and this ventilation cavity includes first cavity and second cavity, is provided with the wind channel bifurcation baffle in the second cavity, and the wind channel bifurcation baffle divides second cavity into cold wind channel and hot air channel. The air inlet assembly is arranged in the front half cavity, and the temperature adjusting assembly is arranged in the rear half cavity.

The air inlet assembly comprises an air blower 115 and an air filter 116, wherein the air blower 115 is arranged in the front half cavity of the ventilation cavity, and the air filter 116 is arranged at the front end of an air inlet of the air blower 115. And the temperature adjusting component comprises a cold air door 117, a hot air door 118 and a heating unit 119, wherein the cold air door 117 is arranged at the air inlet of the cold air duct, the hot air door 118 is arranged at the air inlet of the hot air duct, and the heating unit 119 is arranged in the hot air duct.

And the air inlet end of the ventilation cavity comprises an air inlet door 112, an in-vehicle air inlet port 113 and an out-vehicle air inlet port 114, and the in-vehicle air inlet port 113 and the out-vehicle air inlet port 114 are adjacently arranged. The air intake damper 112 is disposed near the in-vehicle air intake port 113 and the out-of-vehicle air intake port 114, and the air intake damper 112 is switched between a mode of blocking the in-vehicle air intake port 113 and a mode of blocking the out-of-vehicle air intake port 114. The air intake door 112 is connected with a motor, which is disposed near the in-vehicle air intake port 113 and the out-vehicle air intake port 114, and the air intake door 112 is driven to rotate by the motor.

In a specific operation, the air intake damper 112 has two states, specifically: an A1 state (the air inlet door 112 blocks the vehicle exterior air inlet port 114) and an A2 state (the air inlet door 112 blocks the vehicle interior air inlet port 113); the temperature regulating unit has two states, specifically: a B1 state (heating air duct damper open, cold air duct damper closed, and start-up heating unit 119) and a B2 state (heating air duct damper closed, cold air duct damper open, and non-start-up heating unit 119); the blower 115 has two states, specifically: a C1 state (the blower 115 is activated) and a C2 state (the blower 115 is not activated); the cold air mode of the air conditioning system has two states, specifically: d1 state (cold air mode activated) and D2 state (cold air mode not activated).

When a driver finds that the front windshield glass of the vehicle has frosting, the driver can select between a powerful defrosting mode and a defrosting maintaining mode based on the service condition of the vehicle, specifically:

When the powerful defrosting mode is selected, the control system 30 switches the state of the air intake damper 112 to the A1 state, switches the state of the temperature adjusting unit to the B1 state, switches the state of the blower 115 to the C1 state, and switches the state of the cool air mode of the air conditioning system to the D2 state, switches the heating mode of the heating unit 119 to the forced heating mode, and adjusts the blower 115 to the large air volume mode;

When the maintenance defrost mode is selected, the control system 30 switches the state of the air intake damper 112 to the A1 state, the state of the temperature adjustment unit to the B1 state, the state of the blower 115 to the C1 state, and the state of the cool air mode of the air conditioning system to the D2 state, the heating mode of the heating unit 119 to the small/medium heating mode, and the blower 115 to the small/medium air amount mode.

Referring to fig. 5 and 6, fig. 5 and 6 show schematic structural diagrams of a demisting system 20 according to an embodiment of the present application, and the demisting system 20 according to an embodiment of the present application includes a cold air duct 210 and a cold air distribution box 220, wherein the cold air distribution box 220 is disposed on a roof of a vehicle, an air inlet of the cold air distribution box 220 is connected with an air outlet of a roof air conditioner of the vehicle, and an air inlet of the cold air duct is connected with the cold air distribution box 220. In one embodiment, the cool air duct 210 includes a plurality of duct outlets disposed below the interior trim above the vehicle windshield.

When the driver finds that the vehicle is atomized, the cold air mode of the air conditioning system of the vehicle can be selected to start, and then the defogging system 20 is utilized to sequentially flow cold air of the air conditioning system through the cold air distribution box 220 and the cold air pipe 210, and then flows out from the lower part of the interior trim above the front windshield of the vehicle and blows to the front windshield to defog the front windshield.

With continued reference to fig. 6, in an exemplary embodiment, the cold air distribution box 220 includes a side air outlet and a lower air outlet, the side air outlet being connected to an air inlet of the cold air duct, the lower air outlet being provided with an air outlet damper 230.

When defrosting is performed by the air conditioning system, the control system 30 controls the air outlet damper 230 of the cold air distribution box 220 to be closed so that cold air sequentially flows through the cold air distribution box 220 and the cold air duct.

In one exemplary embodiment, the defrost system 10 includes a cool air duct 210 and a cool air distribution box 220, the cool air distribution box 220 being disposed on a roof of the vehicle, an air inlet of the cool air distribution box 220 being connected to a roof air conditioner air outlet of the vehicle, an air inlet of the cool air duct being connected to the cool air distribution box 220. The cold air distribution box 220 includes a side air outlet connected with an air inlet of the cold air duct and a lower air outlet provided with an air outlet door 230. The cold air duct 210 includes a plurality of air duct outlets, and the air duct outlets are disposed below the interior trim above the front windshield of the vehicle.

In a specific operation process, the cold air mode of the air conditioning system has two states, specifically: d1 state (start cold air mode) and D2 state (not start cold air mode); the cold air distribution box 220 has two states, specifically: e1 (outlet damper 230 open) and E2 (outlet damper 230 closed).

When a driver finds that the front windshield glass of the vehicle is atomized, the driver can select a refrigeration defrosting mode, and the method specifically comprises the following steps:

The control system 30 switches the cool air mode of the air conditioning system to the D1 state and switches the state of the cool air distribution box 220 to the E2 state.

Referring to fig. 1 to 6, the present application provides a defrosting and demisting system. The defrosting and defogging system comprises a defrosting system 10, a defogging system 20 and a control system 30, wherein the defrosting system 10 and the defogging system 20 are connected with the control system 30, and the defrosting system 10 and the defogging system 20 are connected with an air conditioning system of a vehicle. Wherein the control system 30 includes a control panel 310 and a control module 320, the control panel 310 is connected to the control module 320, and the defrost system 10 and the defogging system 20 are both connected to the control module 320.

The defrosting system 10 includes a heater 110, a connecting air duct 120 and an instrument panel air duct 130, the heater 110 is disposed below a vehicle instrument, the instrument panel air duct 130 is disposed in an instrument panel of the vehicle, one end of the connecting air duct 120 is connected with an air outlet of the heater 110, and the other end of the connecting air duct 120 is connected with an air inlet of the instrument panel air duct 130.

The heater 110 includes box 111, air inlet subassembly and temperature regulation subassembly, and box 111 includes ventilation cavity and this ventilation cavity includes first cavity and second cavity, is provided with the wind channel bifurcation baffle in the second cavity, and the wind channel bifurcation baffle divides second cavity into cold wind channel and hot air channel. The air inlet assembly is arranged in the front half cavity, and the temperature adjusting assembly is arranged in the rear half cavity.

The air inlet assembly comprises an air blower 115 and an air filter 116, wherein the air blower 115 is arranged in the front half cavity of the ventilation cavity, and the air filter 116 is arranged at the front end of an air inlet of the air blower 115. And the temperature adjusting component comprises a cold air door 117, a hot air door 118 and a heating unit 119, wherein the cold air door 117 is arranged at the air inlet of the cold air duct, the hot air door 118 is arranged at the air inlet of the hot air duct, and the heating unit 119 is arranged in the hot air duct.

And the air inlet end of the ventilation cavity comprises an air inlet door 112, an in-vehicle air inlet port 113 and an out-vehicle air inlet port 114, and the in-vehicle air inlet port 113 and the out-vehicle air inlet port 114 are adjacently arranged. The air intake damper 112 is disposed near the in-vehicle air intake port 113 and the out-of-vehicle air intake port 114, and the air intake damper 112 is switched between a mode of blocking the in-vehicle air intake port 113 and a mode of blocking the out-of-vehicle air intake port 114. The air intake door 112 is connected with a motor, which is disposed near the in-vehicle air intake port 113 and the out-vehicle air intake port 114, and the air intake door 112 is driven to rotate by the motor.

The defrosting system 10 comprises a cold air pipe 210 and a cold air distribution box 220, wherein the cold air distribution box 220 is arranged on the roof of a vehicle, an air inlet of the cold air distribution box 220 is connected with an air outlet of a roof air conditioner of the vehicle, and an air inlet of the cold air channel is connected with the cold air distribution box 220. The cold air distribution box 220 includes a side air outlet connected with an air inlet of the cold air duct and a lower air outlet provided with an air outlet door 230. The cold air duct 210 includes a plurality of air duct outlets, and the air duct outlets are disposed below the interior trim above the front windshield of the vehicle.

In a specific operation, the air intake damper 112 has two states, specifically: an A1 state (the air inlet door 112 blocks the vehicle exterior air inlet port 114) and an A2 state (the air inlet door 112 blocks the vehicle interior air inlet port 113); the temperature regulating unit has two states, specifically: a B1 state (heating air duct damper open, cold air duct damper closed, and start-up heating unit 119) and a B2 state (heating air duct damper closed, cold air duct damper open, and non-start-up heating unit 119); the blower 115 has two states, specifically: a C1 state (the blower 115 is activated) and a C2 state (the blower 115 is not activated); the cold air mode of the air conditioning system has two states, specifically: d1 state (start cold air mode) and D2 state (not start cold air mode); the cold air distribution box 220 has two states, specifically: e1 (outlet damper 230 open) and E2 (outlet damper 230 closed).

When a driver finds that the front windshield of the vehicle has frosting or atomization, different defrosting modes or demisting modes can be selected, specifically:

When the powerful defrosting mode is selected, the control system 30 switches the state of the air intake damper 112 to the A1 state, switches the state of the temperature adjusting unit to the B1 state, switches the state of the blower 115 to the C1 state, and switches the state of the cool air mode of the air conditioning system to the D2 state, switches the heating mode of the heating unit 119 to the forced heating mode, and adjusts the blower 115 to the large air volume mode;

When the maintenance defrosting mode is selected, the control system 30 switches the state of the air inlet damper 112 to the A1 state, switches the state of the temperature adjusting unit to the B1 state, switches the state of the blower 115 to the C1 state, and switches the state of the cool air mode of the air conditioning system to the D2 state, switches the heating mode of the heating unit 119 to the small/medium heating mode, and adjusts the blower 115 to the small/medium air amount mode;

When the cooling defrost mode is selected, the control system 30 switches the state of the blower 115 to the C2 state, switches the cool air mode of the air conditioning system to the D1 state, and switches the state of the cool air distribution box 220 to the E2 state;

when the non-cooling defrost mode is selected, the control system 30 switches the state of the air intake damper 112 to the A2 state, the state of the temperature adjustment unit to the B2 state, the state of the blower 115 to the C1 state, and the state of the cool air mode of the air conditioning system to the D2 state.

In this embodiment, the defrosting system 10 or the defogging system 20 is selected to operate by the control system 30 based on the vehicle condition, when the defrosting system 10 is selected to operate, the heater 110 of the in-vehicle circulation is utilized to efficiently remove frost on the glass surface by sending warm air to the front windshield, and the heater 110 can rapidly heat the in-vehicle air to a proper temperature, thereby improving defrosting efficiency, and meanwhile, due to the arrangement position of the instrument panel air duct 130, hot air can be evenly sent to the vehicle window, and the defrosting effect is ensured to be even and consistent; when the defogging system 20 is selected to work, the cold air function of the air conditioning system is utilized, and the surface temperature of the glass is reduced rapidly by blowing cold air to the front windshield glass, so that the fog on the glass is removed efficiently, the effect of rapid defogging is achieved, the temperature in the vehicle can be reduced effectively, and the driving comfort is improved.

In the description of the present specification, reference to the terms "some embodiments," "other embodiments," "desired embodiments," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (10)

1. A defrost defogging system, comprising:

The defrosting system is connected with the air conditioning system of the vehicle and is used for defrosting when the glass of the vehicle frosts; the defrosting system is arranged below an instrument of the vehicle and comprises a heater, a connecting air pipe and an instrument board air channel, an air outlet of the heater is connected with one end of the connecting air pipe, an air inlet of the instrument board air channel is connected with the other end of the connecting air pipe, the instrument board air channel is arranged in the instrument board of the vehicle, and the heater is arranged below the instrument of the vehicle;

the defogging system is connected with the air conditioning system of the vehicle and is used for preventing window glass of the vehicle from fogging; the defogging system is arranged in the interior trim part above the front windshield glass of the vehicle;

And the control system is connected with the defrosting system and the defogging system and is used for controlling the automatic start and stop of the defrosting system and the defogging system.

2. The defrost and defogging system according to claim 1, wherein the heater comprises a box, an air inlet assembly and a temperature regulating assembly, the box comprises a ventilation cavity, the ventilation cavity comprises a front half cavity and a rear half cavity, the air inlet assembly is arranged in the front half cavity, the temperature regulating assembly is arranged in the rear half cavity, and an air outlet end of the ventilation cavity is connected with one end of the connecting air duct.

3. The defrost and defog system of claim 2, wherein the air inlet end of the ventilation cavity comprises an air inlet door, an in-vehicle air inlet port and an out-vehicle air inlet port, the in-vehicle air inlet port and the out-vehicle air inlet port being disposed adjacent, the air inlet door being configured to control on-off of the in-vehicle air inlet port and the out-vehicle air inlet port.

4. The defrost and defog system of claim 2, wherein the air intake assembly comprises a blower mounted in the front half cavity and an air cleaner disposed at a front end of an air intake of the blower.

5. The defrost and defog system as claimed in claim 2, wherein an air duct bifurcation is provided in the rear half chamber, the rear half chamber being divided into a cool air duct and a hot air duct by the air duct bifurcation.

6. The defrost and defog system of claim 5, wherein the temperature adjustment assembly comprises a cool air door disposed at an air inlet of the cool air duct, a hot air door disposed at an air inlet of the hot air duct, and a heating unit disposed within the hot air duct.

7. The defrost and defog system of claim 1, wherein the defog system comprises a cool air duct and a cool air distribution box, the cool air distribution box is disposed on a roof of the vehicle, an air inlet of the cool air distribution box is connected with an air outlet of a roof air conditioner of the vehicle, and an air inlet of the cool air duct is connected with the cool air distribution box.

8. The defrost and defog system as claimed in claim 7, wherein the cool air distribution box comprises a side air outlet and a lower air outlet, the side air outlet being connected to the air inlet of the cool air duct, the lower air outlet being provided with an air outlet damper.

9. The defrost and defog system of claim 7, wherein the cool air duct comprises a plurality of duct outlets disposed below an interior trim above a vehicle front windshield.

10. The defrost and defog system of claim 1, wherein the control system comprises a control module and a control panel, the control panel being connected to the control module, the defrost system and the defog system both being connected to the control module;

The control panel is used for selecting a defrosting function or a defogging function;

the control module is used for automatically controlling the defrosting system or the defogging system after the defrosting function or the defogging function is selected.