JPH057841Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention heats the area around the inside/outside air switching door and the wire mesh filter in the air conditioning intake unit to prevent ice from forming on the air introduction part of the unit. The present invention relates to a heating device.

[Prior art] Regarding the prior art, according to the drawings below,
To explain, first, Fig. 11 to Fig. 19 show conventional examples, Fig. 11 is a conceptual explanatory diagram of a conventional air conditioning blower device, and Fig. 12 is a conceptual illustration of a conventional air inlet device of an air conditioning duct. Overall perspective view, Fig. 13 is a sectional view of the air introduction section blower case of the air conditioning duct in Fig. 12, Fig. 14 is a side view of the conventional air introduction section blower case, and Fig. 15 is the conventional air introduction section blower case. FIG. 16 is also a plan view of the main part showing the frozen state of the air introduction section blower case.

To explain the problem with body air conditioning systems for automobiles and other vehicles during the harsh winter months, there is an inside/outside air switching door 5 installed in the air conditioning duct in the middle of the blower case for the intake unit in order to introduce outside air into the cabin. The opening/closing is controlled by .

However, in van-type vehicles, there is often not enough space between the front panel and the front panel of the vehicle. In the case of the air introduction part of such an intake unit, where the outer skin of the vehicle body comes into contact with the outside air, at least the cowl panel structure is not completely set to allow snow to fall into the cowl panel. There were many.

In the air introduction section of such an intake unit, a large amount of air mixed with powdery snow is introduced or blown into the duct, and the powdery snow, etc. that enters the device freezes and accumulates in various parts of the duct.

(1) If the moisture in the air mixed with powder snow is allowed to freeze, and the ice is left to form, the following problems will occur as the icing progresses. Due to ice build-up on the outside air switching door of the outside air inlet, the intake unit case, etc.
An inside/outside air switching door 5 is fixed at a key location of the outside air introduction port of the intake unit case. Therefore, it becomes impossible to switch between the inside and outside air introduction holes.

(2) Due to this icing, the above-mentioned inside/outside air switching door 5
The problem that arises when the aperture 54 is closed is that if the vehicle is fixed with indoor air being introduced, the windshield of the vehicle will fog up with water vapor.
This results in poor visibility through the front glass. Further, as a problem due to the adhesion between the inside/outside air switching door 5 and the unit case, the above-mentioned switching operation force of the switching door 5 increases. As a result, a strong operating force is required for the control lever, and if a force greater than the mechanical strength of the internal/external air switching control lever is applied, the lever of the switching door 5 may be deformed or damaged.

(3) Then, the blower fan 12 and the blower case 13 become stuck due to snow and ice attached to it, or the blower fan 12 and the bulging ice inside the case 13 rub against each other, causing interference noise and causing abnormal noise. becomes.

Further, powder snow blown in from the motor cooling duct 15 enters the inside of the motor and forms ice, eventually causing the motor itself to lock up.

Figure 17 is a sectional view of an air conditioning intake unit with an air filter installed in the middle of a conventional air conditioning duct, Figure 18 is a perspective view of an air filter installed in the middle of a conventional air conditioning duct, and Figure 19 is a cross-sectional view of an air filter installed in a conventional air conditioning duct. It is a perspective view of an air filter.

A conventional problem is that powdered snow flows from the air-conditioning duct 2 through the heater outlet and blows into the interior of the vehicle, staining the interior of the vehicle.

In order to solve this problem, as shown in FIGS. 17 to 19, an air filter 8 or a wire mesh filter 9 is added to the inside of the air conditioning duct 2 or the outside air intake to prevent powder snow from entering the air conditioner. Although the intrusion was prevented, there was another problem in that the air filter 8 was clogged with this powder snow, and the amount of air conditioning airflow from the air filter 8 was reduced.

[Purpose of the invention] This invention was devised in view of the above-mentioned problems, and is intended to be applied to the outside air intake of a duct for an air-conditioning blower case, an air-conditioning intake unit with an inside/outside air switching door, etc. To provide a heating device that prevents snow from freezing around an air introduction part passing through a switching door opening and an opening part of a blower case therein.

Furthermore, in the air introduction section as described above, a heating device using a heat pipe structure is prepared, and a heating device at the outside air intake port, the heating device at the outside air switching door support shaft there, or a heating device using a heat pipe structure is prepared. A heat pipe route should be attached to at least one side of the outside air intake for heating, and a wire mesh filter to prevent snow should be installed on the entire cross section, and a heat pipe route extending from one side of the surrounding area to the support shaft should be installed. , attach this filter to one side to heat it to the appropriate temperature,
It is an object of the present invention to provide a device that continues to ensure the performance of control devices and the performance of the air filter even during the harsh winter season.

[Structure of the invention] The gist of the heating device for the air introduction part of the intake unit of this invention is that it is equipped with an air inlet into which the air inside the vehicle enters and an outside air intake into which outside air flows. In an air conditioning intake unit consisting of an air conditioning intake duct in which an inside/outside air switching door is placed to control the opening and closing of the air inlet and outside air intake, and an air conditioning blower case, a wire mesh filter etc. installed in the middle of the air conditioning duct is heated. The heat dissipation end of the pipe structure is used as the heat dissipation end of the heat pipe structure, and the support shaft of the inside/outside air switching door is used as the heat dissipation end of the heat pipe structure. The feature is that the filter etc. are heated.

Another feature is that the heat source is connected to the motor of an air conditioning blower. A further feature is that the heating source is connected to a heater core within the air conditioning intake unit. A further feature is that the heating source is connected to a headlamp.

[Function] Since the above configuration is provided, as explained in the configuration of the outside air intake of the heating device of the air introduction part of the air conditioning duct of this invention, in winter, it is used as a heating source owned by the vehicle itself. The temperature is raised by the air conditioning blower motor, the heater core in the air conditioning blower motor intake unit, and at night, the heat dissipation end of the heat pipe structure connected to the headlight.
In addition, a wire mesh filter or the like installed in the middle of the air conditioning duct is used as the heat dissipation end of the heat pipe structure, and the heating medium in the pipe has the effect of increasing the temperature inside the outside air intake. Furthermore, since the support shaft of the door is the heat dissipation end of the heat pipe structure, freezing around the outside air intake and indoor air intake does not occur, which is no longer a problem.

However, regarding the air introduction part of the same unit,
At the point where outside air is introduced from outside the vehicle, a large amount of air mixed with powdery snow is introduced, or a large amount of snow is blown into the duct and enters the air conditioning blower device, causing the air to flow into the air conditioning duct inside the vehicle. It no longer accumulates in the body.

[Example] Hereinafter, an example of this invention will be described with reference to the drawings. Fig. 1 is an overall perspective view showing the heating device for the air introduction part of the duct in the air conditioning intake unit according to the first embodiment of this invention, and Fig. 2 shows only the inside/outside air switching door of the first embodiment. FIG. 3 is a sectional view of essential parts of the inside/outside air switching door and heat pipe of the first embodiment, FIG. 4 is a perspective view of the heat dissipation end of the heat pipe of the first embodiment, and FIG. 5 is a perspective view of the heat pipe of the first embodiment. Figure 4 is a front view of the main parts of the heat pipe, Figure 6 is a perspective view showing the heat dissipation end of the heat pipe placed on the blower motor, and Figure 7 is a headlight of the second embodiment of this invention as a heat source. FIG. 3 is a cross-sectional view of the connected heat pipe device. In the figure, reference numeral 1 denotes an air conditioning blower device with an inside/outside air switching door 5 disposed at the front of a vehicle such as an automobile. Reference numeral 2 denotes an air conditioning intake duct (hereinafter simply referred to as the air conditioning duct) which is a hollow molded product made of polypropylene, and a downward-facing internal/external air switching door opening hole 44 is provided at the bottom of the heating device 10 at the air introduction part of the air conditioning duct 2. is worn. Reference numeral 3 denotes an outside air intake port which also serves as a drain for water in the air conditioning blower device 1. The entire hollow molded product of the air conditioning duct 2 made of the same polypropylene is rectangular in shape, and has tapered lattice-shaped beams cut into it to reinforce the switching door 5. Also, 5
6 is a heat pipe, and 61 is a heat dissipation end of the heat pipe, which is also a receiving shaft portion to be described later. 7 is a support shaft for the switching door 5.

Further, 8 is a spongy air filter for preventing powder snow from entering the air conditioning blower device 1.
9 is a wire mesh filter for preventing snowballs, frozen lumps, etc. from entering the air conditioning blower device 1; 10 is an outer panel of the vehicle body; and 11 is a peripheral plate of the heat receiving end of the heat pipe, It is bent and molded according to the shape of the area where it will be used. Further, 12 is a blower fan which is a main component of the air conditioning blower device 1, 13 is a blower case which is a main component of the air conditioning blower device 1, and 14 is a blower motor which is a component of the air conditioning blower device 1.

In this way, to explain the main components of the air conditioning blower device 1, as shown in FIG. According to No. 6, the blower case 13 is attached to at least one side, and this one side is heated.

Further, 33 is an outside air intake port, 40 is an oil-resistant and cold-resistant sealing member on one side of the inside/outside air switching door, and 41 is a sealing member 40 fitted into the tip of the water draining outside air intake port 3.
It is Patsukin. Reference numeral 44 designates a rectangular internal/external air switching door opening hole around which a rubber gasket 41 is fitted in the surrounding plate 11 of the headlamp 30 on the front panel. On the other hand, another outside air intake 33 located at the rear
It goes without saying that the outside air intake port 33, which is configured to allow indoor heating air to be introduced in addition to the introduced air, is useful for introducing mixed air.

A heating device 20 at this outside air intake port 3 and the shaft 7
This can be solved by heating it to an appropriate temperature.
For this purpose, the route of each piping of the heat pipe 6 extending to the shaft 7, which is the heat pipe heat dissipation end 61, is attached to one side of the outside air intake port 3 of the air conditioning blower case 13, so that the route around the inside/outside air switching door 5, which is prone to freezing, is This can be solved by heating to an appropriate temperature.

Next, as shown in FIG. 1, according to the heat pipe 6 of a predetermined diameter routed to reach the heating source of this invention, the heating device 20 of the air introduction part of the air conditioning duct 2 of the first embodiment is heated. It is provided with a heat pipe heat dissipation end 61 disposed toward the outside air intake port 3. Furthermore, the heat dissipation end 61 of the heat pipe 6
is used as a bearing for the shaft 7 of the above-mentioned inside/outside air switching door 5, and by configuring the shaft 7 of this inside/outside air switching door 5 with a heat pipe 6, the inside/outside switching door 5 itself can be replaced by the heat pipe 6. Heat from the surrounding area.

Next, FIG. 6 shows a heat receiving end of a heat pipe disposed around the blower motor 14 as a heat source for the heat pipe 6. As shown in FIG. Conventionally, in order to cool the blower motor 14 itself, the motor cooling duct 15 sends outside air into the inside of the blower motor 14, and the function of cooling the blower motor 14 is changed to the heat pipe 6. The first embodiment is disclosed in which the blower motor 14 is cooled by the heat transfer action, and FIG.
As a heat source for the heat pipe 6 of this second embodiment, the heat pipe 6 is set so that the heat generated by the surrounding plate 11 around the headlight 30 is used only at night, and the other end is connected to a cooling part. An embodiment having the same structure is disclosed in which the heat dissipating end 61 is disposed so that the heat generated by the blower motor 14 is transferred by the heat transfer action.

Furthermore, FIG. 8 is a sectional view showing an air conditioning intake unit according to a third embodiment of the invention, in which an air filter 8 or a wire mesh filter 9 is installed in the middle of the air conditioning duct 2 over the entire cross section. 10 is a perspective view showing a heat pipe device 6 disposed as a heating device 20 using an air filter 8 and a wire mesh filter 9 in the middle of the air conditioning duct 2 of the third embodiment. FIG. device 20
FIG. 2 is a cross-sectional view of a heat pipe 6 and a heat pipe heating plate 17 brought into close contact with a heater radiator for the purpose of heating a wire mesh filter 9 disposed in FIG.

Therefore, as shown in FIGS. 8 to 10, even if there is an air filter 8 in the air conditioning duct 2 of the hollow molded product at a position following the heat outside air intake 33', It may be placed on the entire surface of the air conditioning duct 2, or a wire mesh filter 9 may be placed on the entire surface of the duct 2 at a deep position in the air conditioning duct 2 so as to correspond to a cutting board.

Moreover, in the above-mentioned air conditioning intake unit, the shaft 7 of the inside/outside air switching door 5 is configured as a heat pipe 6 to heat the inside/outside air switching door 5 itself. By placing the aforementioned heat pipe 6 that reaches the receiving shaft of the shaft 7 of the door 5 inside the blower case 13 and attaching it to one side as described above, the connection between the blower case 13 and the inside/outside air switching door 5 is improved. It is configured to heat the entire circumference of the overlapping portion to an appropriate temperature.

As a result, in the blower case 13 to which the DC motor is connected, the air conditioning duct 2 continues in a predetermined direction.
Even with the air filter 8 mounted on the entire surface in the middle, the piping route of the heat pipe 6 extending to the shaft 7 is bent, and it is attached to one side of the wire mesh filter 9 at the back position to heat it. There is.

Next, 20 is the heating device of the air introduction part of this invention, and furthermore, it has another outside air intake 33 placed after it, so that indoor heating air can be introduced in addition to the introduced air. A so-called damper, which is a multi-stage internal/external air switching door 5, is arranged at the inside and outside, so that the flow of introduced air can be switched.

A heat outside air intake 33' is arranged toward the cold air introduction outside air intake 3 of the heating device 20 of the air introduction part of the air conditioning duct 2 of the hollow molded product.
It is equipped with an outside air intake port 3 for detouring.

Therefore, in this air conditioning intake unit, since the heating shaft 7 of the cantilever hinge 7' of the inside/outside air switching door 5 has a heat pipe 6 structure to heat the area around the inside/outside air switching door 5, it is possible to The axis 7 of the diameter is the heat radiation end 61 of the heat pipe 6.
As a result, as long as the air conditioning ducts 2 operate normally, the blower fans 12 of these air conditioning ducts 2 will not be locked, and furthermore, the blower motor 14 will not be locked.

Further, the blower fan 12 does not stick to the blower fan 12 due to snow and ice attached to the blower case 13, and the blower fan 12
The expanding ice inside the blower case 9 will not rub against each other, and will not cause interference or abnormal noise.

Further, powder snow blown into the room from the motor cooling duct 15 does not enter the interior of the blower motor 14 and form ice, and the blower motor 14
It does not lock itself.

However, to explain the third embodiment,
As shown in FIGS. 8 to 10, the heat dissipation end 61 of the heat pipe 6 placed in the opening hole of the inside/outside air switching door and the outside air intake port 3 are connected to the surrounding plate 11 of the illumination light 30 in front of the front panel. After preparation, these heat dissipating ends 61 are introduced into the outside air intake port 3, a wire mesh filter 9 is installed over the entire surface, and the piping route of the heat pipe 6 is set as shown in the perspective view of FIG. It is bent.

Therefore, the piping route of the heat pipe 6 is heated by adding a wire mesh filter 9 to one side to complete the heating device 20 of the air introduction section.

[Effects of the invention] As explained above in detail about the configuration of the outside air intake of the heating device of the air introduction part of the air conditioning duct in the vehicle interior of this invention, especially during the severe winter season,
In the heating device of the air introduction part of the intake unit, which is the contact area of the intake outside air, a wire mesh filter installed in the middle of the air conditioning duct is used as the heat dissipation end of the heat pipe structure, and the support shaft of the inside/outside air switching door is constructed as the heat pipe structure. By connecting the heat receiving end at the other end of this heat pipe structure to a heating source, it is possible to heat the area around the inside/outside air switching door, the wire mesh filter, etc. A heat pipe piping route was attached to one side of the outside air intake of the air conditioning blower case to heat the area around the inside/outside air switching door, and furthermore, it was installed on the entire surface behind the air conditioning blower case and this air conditioning duct. In the wire mesh filter, since the heat pipe piping route extending to the shaft is attached to one side of the wire mesh filter for heating, the outside air intake port is an opening for the inside/outside air switching door provided in the vehicle body air conditioning intake unit, etc. In the heating device of the air introduction section where the air passes through the hole, a heat pipe is installed at the outside air intake of the heating device of the air introduction section of the air conditioning duct at the point where cold air is introduced for introducing and taking in outside air. A heat dissipation end or another outside air intake for bypassing the heat outside air intake is prepared, and a heating outside air intake of a predetermined diameter is introduced by these, and the gap between the inside and outside air switching door opening is sealed. Because it is a thing,
Prevents freezing around the area where cold air is introduced through the internal/external air switching door opening provided in the vehicle air conditioning intake unit, etc. Furthermore, prepare the heat dissipation end of the heat pipe placed deep in the opening hole of the inside/outside air switching door, or the outside air intake to bypass the heat outside air intake. This uses a heating medium, etc. to raise the temperature inside the water drain outside air intake, and prevents water droplets from forming in the outside air switching door openings and frozen lumps outside the vehicle from freezing and icing during the harsh winter months.

In addition, when using a vehicle, in order to inhale the cold air, the outer panel of the vehicle body comes into contact with the outside air.
At the point where the cold air is introduced to introduce outside air, which is controlled by the inside/outside air switching door, moisture mixed with snow will not freeze, and the opening hole of the inside/outside air switching door is completely sealed and cannot be opened or closed. By repeating heating during the severe winter months, when water would normally be unable to drain, there was no longer any freezing around the area where cold air was introduced through the outside air intake.

In addition, the conventional problem of waste water turning into water contaminating the passenger compartment every time thawing is repeated is eliminated.In addition, the air filter and wire mesh filter shown in the figure are compatible, improving ventilation efficiency at each position and preventing clogging. It can be said that this is a practical and highly effective idea with no problems and no operating costs.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention,
Fig. 1 is an overall perspective view showing the heating device for the air introduction part of the duct in the air conditioning intake unit according to the first embodiment of this invention, and Fig. 2 shows only the inside/outside air switching door of the first embodiment. Perspective view of main parts, 3rd
The figure is a sectional view of essential parts of the inside/outside air switching door and heat pipe of the first embodiment, FIG. 4 is a perspective view of the heat dissipation end of the heat pipe of the first embodiment, and FIG. Fig. 6 is a perspective view showing the heat dissipation end of the heat pipe placed in the blower motor; Fig. 7 is a front view of the section;
The figure is a cross-sectional view of a heat pipe device according to the second embodiment of this invention, in which a headlamp is connected as a heating source, and FIG. 9 is a cross-sectional view showing the intake unit, FIG. 9 is a perspective view of the main part showing a heat pipe device placed in the wire mesh heating device of the air filter in the middle of the air conditioning duct of the third embodiment, and FIG. 10 is the air conditioning duct of the third embodiment. 11 to 19 show conventional examples, and FIG. 11 is a conceptual explanatory diagram of a conventional air conditioning blower device, and FIG. 13 is a sectional view of the air introduction section blower case of the air conditioning duct shown in FIG. 12, and FIG. 14 is a side view of the conventional air introduction section blower case. Fig. 15 is a plan view of a conventional air inlet blower case, Fig. 16 is a plan view of the main parts of the air inlet blower case showing a frozen state, and Fig. 17 is a full cross-sectional view of a conventional air filter in the middle of an air conditioning duct. FIG. 18 is a sectional view of an installed air conditioning intake unit, FIG. 18 is a perspective view of an air filter in the middle of a conventional air conditioning duct, and FIG. 19 is a perspective view of an air filter placed in a conventional air conditioning duct. 1... Air conditioning blower device with an inside/outside air switching door, 2
...Air conditioning intake duct, 3...Outside air intake,
4... Indoor air intake port, 5... Indoor/outside air switching door,
6... Heat pipe, 7... Support shaft, 7'... Cantilever hinge, 8... Air filter, 9... Wire mesh filter, 10... Vehicle body outer plate, 12... Blower fan, 13... Blower case, 14 ... Blower motor, 16 ... Heater pipe, 20 ... Air introduction section heating device, 61 ... Heat pipe heat radiation end.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An air intake port through which air from inside the vehicle flows in, and an outside air intake port through which outside air flows in, and a system for controlling the opening and closing of these air intake ports and outside air intake. In an air conditioning intake unit consisting of an air conditioning intake duct in which an inside/outside air switching door is arranged and an air conditioning blower case, a wire mesh filter or the like installed in the middle of the air conditioning duct is used as the heat dissipation end of the heat pipe structure, and the inside/outside air switching door is The support shaft is a heat dissipating end of a heat pipe structure, and the heat receiving end at the other end of the heat pipe structure is connected to a heating source to heat the area around the inside/outside air switching door, the wire mesh filter, etc. A heating device for the air introduction section of the intake unit. (2) The heating device for the air introduction part of an intake unit according to claim 1, wherein the heating source is connected to a motor of an air conditioning blower. (3) A heating device for an air introduction part of an intake unit according to claim 1, wherein the heating source is connected to a heater core in an air conditioning intake unit. (4) A heating device for an air introduction portion of an intake unit according to claim 1, wherein the heating source is connected to a headlamp.