KR20230148689A - Heating device for vehicle and air conditioner for vehicle having the same - Google Patents

Abstract

Disclosed is a vehicle heating device that can supplement quick effectiveness by heating low-temperature air discharged through a floor duct of a main air conditioning device during initial heating, and a vehicle air conditioning device equipped therewith. The following vehicle heating device includes a floor duct connected to the air conditioning case of the vehicle air conditioning device to discharge air to the bottom of the vehicle; and a planar heating member disposed between the floor duct and the interior member and having an opening corresponding to the floor duct outlet, wherein the planar heating member enables convection heating by heating the air passing through the floor duct outlet and at the same time heats its own. Radiant heating by heat generation is possible.

Description

Vehicle heating device and vehicle air conditioning device equipped with the same {HEATING DEVICE FOR VEHICLE AND AIR CONDITIONER FOR VEHICLE HAVING THE SAME}

The present invention relates to a heating device for a vehicle, and more specifically, to a heating device for a vehicle that is installed in an interior member on the outlet side of a flow duct to perform heating, and to an air conditioning device for a vehicle equipped with the same.

Generally, a vehicle air conditioning system is a device for cooling or heating the interior of a vehicle by heating or cooling air. The vehicle air conditioning system is equipped with an evaporator as a cooling device and a heater core as a heating device inside the air conditioning case, and air cooled or heated by the evaporator or heater core is selectively blown to each part of the vehicle interior by operating the door. .

Referring to FIG. 1, a conventional vehicle air conditioning device 1 includes an air conditioning case 10, a blower, an evaporator 2, a heater core 3, and a temp door 15. An air inlet 11 is formed on the entrance side of the air conditioning case 10, and a defrost vent 12, a front seat vent 13, and a floor vent 14, 15 whose opening degree is controlled by the mode door are formed on the outlet side. . The blower is connected to the air inlet 11 of the air conditioning case 10 and blows indoor or outdoor air into the air conditioning case 10.

The evaporator 2 and the heater core 3 are sequentially provided in the internal air passage of the air conditioning case 10. The evaporator (2) is a heat exchanger for cooling and cools the air passing through it, and the heater core (3) is a heat exchanger for heating and heats the air passing through it. The temp door (15) is installed between the evaporator (2) and the heater core (3), and controls the amount of air moving into the flow path bypassing the heater core (3) and the amount of air moving into the flow path passing through the heater core (3). By controlling the amount of air, the temperature of the air discharged into the vehicle interior is controlled.

The mode door includes a deep door (16) that controls the opening degree of the defrost vent (12), a vent door (17) that controls the opening degree of the front seat vent (13), and a door that controls the opening degree of the floor vents (14, 15). It consists of a floor door (18). An electric heater (4) is provided downstream of the heater core (3) in the air flow direction. The electric heater 4 is an auxiliary heating device and is composed of a PTC heater that generates heat by applying power.

In a conventional PTC heater, a plurality of PTC elements are arranged side by side, and electrode portions having + electrodes and - electrodes are provided on both sides of the PTC elements in the thickness direction. When power is applied through the electrode part, the PTC element generates heat. An insulating layer for electrical insulation is attached to each electrode part, and a heat conduction layer for smooth conduction of heat is attached to the insulating layer. In addition, each heat-conducting layer is coupled with a heat dissipation fin to increase the heat dissipation surface area.

Conventional vehicle air conditioning devices have problems such as PTC heaters have a long heat transfer path and a small heating element area, slowing down the temperature increase rate, reducing heat transfer efficiency, reducing quick effectiveness, and increasing the temperature of the heating element. In addition, the structure of the PTC heater is complex, so it is heavy and large in size, so there are problems with restrictions on the application location.

Patent document: Republic of Korea Patent Publication No. 10-2002378 (2019.07.16)

In order to solve such conventional problems, the present invention provides a vehicle heating device that can supplement quick effectiveness by heating low-temperature air discharged through the floor duct of the main air conditioning device during initial heating, and a vehicle air conditioning device equipped with the same. There is a purpose to doing it.

A vehicle heating device according to the present invention includes a vehicle air conditioning device connected to an air conditioning case and having a discharge duct for discharging air to the interior of the vehicle; and an interior member disposed between the air conditioning device and the occupant, wherein the interior member includes a planar heating member, wherein the planar heating member includes: a first heating area that performs radiant heating by planar heating; and a second heating zone that performs radiation and convection heating.

A heat conducting member is further provided between the discharge duct and the planar heating member.

The planar heating member has a plurality of porous holes formed in a portion corresponding to the discharge duct discharge port.

The discharge duct is composed of a floor duct for discharging air to the lower part of the vehicle interior.

The planar heating member is disposed between the discharge duct and the interior member, and an opening corresponding to the discharge duct outlet is formed. The planar heating member enables convection heating by heating the air passing through the discharge duct outlet and at the same time generates its own heat. Radiant heating is possible.

The second heating area is formed around the opening to perform radiation and convection heating by heating the air passing through the opening.

The planar heating member is coupled to the interior member so as to make surface contact.

A plurality of through holes corresponding to the discharge duct discharge port and the opening of the planar heating member are formed in the heat conductive member.

The interior member is provided with a grill portion that forms a plurality of holes in a portion corresponding to the discharge duct discharge port.

The grill portion is formed such that the blades of the grill are inclined at different angles.

The planar heating member is installed to be attached to the interior member or buried in the interior member.

The heat generation amount per area of the first heating area and the second heating area is configured to be different from each other.

The calorific value per area of the second heating zone is controlled to be higher than the calorific value per area of the first heating zone.

The planar heating member has an electrode portion on one side and a heating band connected to the electrode portion, and the heating band is configured in series or parallel form.

A plurality of radiation holes are formed in the interior member to transmit radiant heat of the first heating area to the vehicle interior.

The interior member with which the planar heating member is in contact is formed to be thinner than the area where the planar heating member is not in contact, or the area where the planar heating member is in contact with the area where the planar heating member is not in contact are made of different materials.

On the other hand, the air conditioning device for a vehicle according to the present invention includes an air conditioning case configured to discharge air-conditioned wind into the interior of the vehicle with an air flow path formed therein, and is connected to the air conditioning case to discharge air into the interior of the vehicle. discharge duct for; and an interior member disposed between the air conditioning device and the occupant, wherein the interior member includes a planar heating member, wherein the planar heating member includes: a first heating area that performs radiant heating by planar heating; and a second heating zone that performs radiation and convection heating.

The vehicle heating device and the vehicle air conditioning device equipped with the same according to the present invention heat and raise the temperature of the relatively low temperature air discharged through the floor duct of the main air conditioner during initial heating, and at the same time enable direct heating using radiant heat, thereby enabling direct heating of the main air conditioner. It can efficiently compensate for the low effectiveness of air conditioning equipment. In addition, it can provide fast heating and reduce energy consumption for heating.

1 is a cross-sectional view showing the interior of a conventional vehicle air conditioning system;
Figure 2 is a perspective view showing the interior of a vehicle installed with a vehicle air conditioning system according to an embodiment of the present invention;
Figure 3 is a cross-sectional view showing the interior of a vehicle air conditioning system according to an embodiment of the present invention;
Figure 4 is a perspective view showing a combined state of a vehicle heating device according to an embodiment of the present invention;
Figure 5 is a perspective view showing a separated state of a vehicle heating device according to an embodiment of the present invention;
Figure 6 is a front view showing a grill portion of an interior member according to an embodiment of the present invention;
Figure 7 is a plan view showing a planar heating member of a vehicle heating device according to an embodiment of the present invention;
Figure 8 is a perspective view showing the exterior of a vehicle heating device according to an embodiment of the present invention;
Figures 9 and 10 are perspective views showing a modified example of Figure 5.

Below, the technical configuration of a vehicle heating device and a vehicle air conditioning device equipped with the same will be described in detail according to the attached drawings.

Referring to FIGS. 2 to 8 , a vehicle air conditioning device 300 according to an example of the present invention includes an air conditioning unit 100 and a blowing unit 400. The air conditioning unit 100 includes an air conditioning case 110, a heat exchanger for cooling and a heat exchanger for heating, a temp door 115, and a mode door. The blowing unit 400 is equipped with a blower motor and a blower wheel to blow air into the air passage inside the air conditioning case 110.

An air inlet 111 is formed on the inlet side of the air conditioning case 110, and a plurality of air discharge ports are formed on the outlet side. The air outlet is a defrost vent (112) for discharging air toward the vehicle window, a front seat vent (113) for discharging air toward the occupant's face, a floor vent (114, 115) for discharging air toward the occupant's feet, and an air vent toward the rear seat of the vehicle. It consists of a console vent for discharging.

Additionally, an air flow path is formed inside the air conditioning case 110 to discharge air conditioning wind into the vehicle interior. The blowing unit 400 is installed at the air inlet 111 of the air conditioning case 110 and blows internal or external air into the interior of the air conditioning case 110. The cooling heat exchanger and the heating heat exchanger are sequentially installed in the air flow path inside the air conditioning case 110 in the air flow direction.

The cooling heat exchanger cools the air by exchanging heat with the air passing through it and consists of an evaporator (102). The heating heat exchanger heats the air by exchanging heat with the air passing through it and is composed of a heater core 103. The heating heat exchanger may be composed of an internal heat exchanger that uses refrigerant as a heat source instead of the heater core 103 that uses cooling water as a heat source.

The temp door 115 is installed between the evaporator 102 and the heater core 103, and controls the amount of air passing through the heater core 103 and the amount of air bypassing the heater core 103. The mode door includes a deep door 116 that controls the opening degree of the defrost vent 112, a vent door 117 that controls the opening degree of the front seat vent 113, and a floor door that controls the opening degree of the floor vents 114 and 115. It consists of (118).

The floor vents 114 and 115 are composed of a front seat floor vent 114 and a rear seat floor vent 115, and a floor duct 210, called a shower duct, is connected to the front seat floor vent 114. The floor duct 210 is an air conditioning duct connected to the air conditioning case 110 to discharge air to the lower side of the vehicle. That is, the warm air from the air conditioning case 110 is discharged through the floor duct 210 to the seat bottom surface 330 below the front seat of the vehicle where the passenger's feet 310 are located.

The vehicle air conditioning device 300 includes a vehicle heating device 200. The vehicle heating device 200 includes a planar heating member 230. The planar heating member 230 is disposed between the discharge duct and the interior member 240. In this embodiment, the discharge duct is composed of the floor duct 210, but the vehicle heating device is not limited to the floor duct 210 and can be applied to other discharge ducts. An opening is formed in the planar heating member 230, and the opening is formed to correspond to the discharge port 219 of the floor duct 210. The planar heating member 230 is configured to enable convection heating by heating the air passing through the discharge port 219 of the floor duct 210 and at the same time enable radiant heating by its own heat generation. Meanwhile, the planar heating member 230 can also be installed on the built-in member 240 without a discharge port.

In this way, convection heating is performed by additional heating with the wind blowing from the main air conditioner through the planar heating member 230, and radiant heating is performed by self-heating, so that the occupants can enjoy higher heating performance through convection and radiation. can feel. In addition, through convection and radiant heating, the relatively low temperature air discharged through the floor duct 210 of the main air conditioner during initial heating is heated and raised, and direct heating using radiant heat is possible, thereby increasing the temperature of the main air conditioner. It can efficiently compensate for the low efficacy.

That is, as convection and radiant heating can be performed simultaneously through the planar heating member 230, even in an environment or air conditioning mode where no wind blows from the main air conditioning device through the floor duct 210, the planar heating member 230 Heating is possible with radiation alone. In addition, when rapid or large amounts of heating heat are required, the conditions can be satisfied by performing convection and radiant heating together.

The planar heating member 230 has a plurality of porous holes 231 formed in a portion corresponding to the discharge port 219 of the floor duct 210. In addition, a heat conducting member 220 is further provided between the floor duct 210 and the planar heating member 230. In addition, a plurality of through holes 221 are formed in the heat conductive member 220, corresponding to the discharge port 219 of the floor duct 210 and the opening of the planar heating member 230. Meanwhile, the interior member 240 is installed on the dash panel 320 side of the vehicle and is placed between the air conditioning device and the passenger. The interior member 240 includes a planar heating member 230.

More specifically, the floor duct 210 extends from the outlet of the floor vent 114 formed on both sides of the air conditioning case 110 to both sides of the vehicle width direction, and the outlet 219 is curved to point downward. The discharge port 219 of the floor duct 210 has a substantially rectangular shape, and may be formed in other shapes. Conventionally, the air passing through the floor duct 210 was discharged directly into the vehicle interior through the discharge port 219, but in the present invention, a heat conduction member 220 and a planar heating member 230 were added.

The heat conductive member 220 has a shape corresponding to the discharge port 219 of the floor duct 210 and is made of a plate of approximately rectangular shape. The heat conductive member 220 is preferably made of a metal with high heat conductivity. In addition, the through hole 221 formed in the heat conductive member 220 is formed to correspond to the porous hole 231 formed in the planar heating member 230, and the overall arrangement of the through hole 221 is that of the floor duct 210. It forms a rectangle corresponding to the opening 219.

The opening of the planar heating member 230 consists of a plurality of porous holes 231. That is, the opening of the planar heating member 230 is not in the form of a single hole, but is in the form of a plurality of fine small porous holes 231 formed. Similarly to the through hole 221 of the heat conducting member 220, the overall arrangement of the porous holes 231 of the planar heating member 230 forms a rectangle corresponding to the opening 219 of the floor duct 210.

The air discharged from the air conditioning case 110 moves through the floor duct 210, passes through the discharge port 219, passes through the through hole 221 of the heat conducting member 220, and then passes through the porous hole of the planar heating member 230. After passing through 231, it is discharged into the vehicle interior through the grill part 241 formed in the interior member 240. In this case, the air is heated by the heat of the planar heating member 230 while passing through the porous hole 231 of the planar heating member 230.

As the opening of the planar heating member 230 is composed of a plurality of porous holes 231, the area in contact with air as it passes through the porous holes 231 increases, further increasing the temperature raising effect of the air and significantly improving heating performance. and can further increase the effectiveness.

In addition, the heat conductive member 220 is mounted in contact with the area where the porous hole 231 of the floor duct 210 and the planar heating member 230 is formed. In this way, as the heat conductive member 220 is configured between the discharge port 219 of the floor duct 210 and the planar heating member 230, the heat of the planar heating member 230 is transferred to the air during convection heating to heat the air. In addition to better transmission, it can perform the function of diffusing heat to suppress local overheating that may occur in the planar heating member 230.

The planar heating member 230 consists of a first heating area 234 and a second heating area 233. The first heating area 234 is a part that performs radiant heating by surface heat generation, and the second heating area 233 is formed around the opening (porous hole) and radiates by heating the air passing through the opening (porous hole). and convection heating.

That is, the planar heating member 230 has a porous hole 231 and a heating portion surrounding the porous hole 231 so that at least a portion of the total area can be heated as the air conditioned air passes through. In addition, in areas without porous holes, a separate heating part is formed to additionally perform radiant heating, and is coupled to the interior member 240 so as to be in surface contact.

Meanwhile, the floor duct 210 is provided on the flow path through which a portion of the temperature-controlled air from the air conditioning case 110 is discharged into the vehicle interior. And, in order to further increase the temperature of the air discharged to the floor duct 210, it is configured to guide the air to the porous hole 231 of the planar heating member 230.

The interior member 240 is provided with a grill portion 241 forming a plurality of holes in a portion corresponding to the discharge port 219 of the floor duct 210. In this case, the grill portion 241 is formed such that the blades of the grill are inclined at different angles, as shown in FIG. 6 . Through this configuration, the air-conditioned air is guided in a desired direction and the air-conditioned air is smoothly supplied to both feet 310 of the occupant, thereby improving heating performance.

Meanwhile, the planar heating member 230 may be installed to be adhered to the interior member 240 or buried inside the interior material by a method such as molding to the interior member 240. Since the planar heating member 230 is made in the form of a relatively thin plate, when attached to the interior member 240, it does not take up a lot of space and can be installed almost as if integrated with the interior member 240.

The interior member 240 is preferably made of a material that does not have very high thermal conductivity. The heat capacity of the planar heating member 230 and the interior member 240 is relatively large, so there is no risk of burns even when directly contacting the human body. In other words, the accumulated heating temperature of the member that uses radiant heat is around 80°C to 105°C, and upon contact, heat is lost to the human body due to low heat capacity, and the temperature of the heating part drops to a temperature that does not cause burns. Once the accumulated heat is taken away in this way, the amount of heat instantaneously generated by the planar heating member 230 for radiation is not large and does not cause harm to the human body.

The planar heating member 230 has an electrode portion 232 on one side, and heating bands are arranged over the entire area. The heating strip is connected to the electrode section and generates heat according to the application of power. For example, the (+) terminal and (-) terminal of the first electrode unit 232 are each connected to the first heating area 234, and the heating band of the first heating area 234 has a porous hole 231. They are evenly arranged throughout the area where there are none. In addition, the (+) terminal and (-) terminal of the second electrode unit 232 are each connected to the second heating area 233, and the heating band of the second heating area 233 is around the porous hole 231. are evenly arranged around the porous hole 231 to surround it.

In this case, the heating strips connected to the electrode unit 232 may be configured in series or parallel. When the heating strips in the heating area are connected in series, the degree of freedom in the shape of the heating area increases, making it easier to change the design according to the installation environment of the internal member 240. In addition, when the heating strips in the heating area are connected in parallel, the efficiency of the heating area increases, thereby maximizing the improvement of heating performance.

As such, the planar heating member 230 has at least one electrode unit 232 for applying voltage, and a portion of the power source is a planar heating unit capable of simultaneously performing convection and radiation in which the porous hole 231 is formed (see 2 heating zone), and the other part of the power is configured to apply power to the planar heating unit (first heating zone) that can perform radiant heating.

In addition, the heat generation amount per area of the first heating area 234 and the second heating area 233 is configured to be different from each other. More preferably, the heat generation amount per area of the second heating area 233 is controlled to be higher than the heat generation amount per area of the first heating area 234. Since the surface heating part of the second heating area 233, which simultaneously performs convection and radiation, can easily cool down by losing heat due to the conditioned air, compared to the surface heating part of the first heating area 234, which performs radiant heating. It is desirable to configure it to have a very high heating value per area.

In summary, the conventional vehicle air conditioning system performed heating by heating the indoor air with air, but it consumed a lot of heating energy and the warmth rose due to natural convection, so the upper body of the occupants was uncomfortable with hot wind and the lower body was cold. There was. To solve this problem, some means for auxiliary heating, such as PTC heaters, were added, but they were expensive, heavy, and large in size, so their application locations were limited.

The vehicle heating device 200 and the vehicle air conditioning device 300 according to an embodiment of the present invention can provide rapid heating to the vehicle interior and reduce energy consumption for heating. The interior member 240 is close to the passenger's feet 310 and is installed in the floor duct 210 and the grill part 241, which are air conditioning ducts through which air conditioning air is discharged, to provide hot air to the room and at the same time provide heat to the passenger's body. Performs radiant heating that can provide a direct heating sensation.

The vehicle heating device 200 makes surface contact with the floor duct 210 through which heating air passes, the interior member 240 located around the floor duct 210 and close to the occupant's body, and the interior member 240. It includes a planar heating member 230 that is installed and can simultaneously perform radiation & convection heating through air and radiation heating through self-heating. In this case, a heat conductive member 220 is additionally provided to improve heat transfer and suppress local overheating.

Meanwhile, further referring to FIG. 9, a plurality of copy holes 249 may be formed in the interior member 240. The radiation hole 249 is formed to penetrate both sides of the interior member 240 and is formed in a portion corresponding to the first heating area 234 of the planar heating member 230. The radiation hole 249 is used to transmit radiant heat from the first heating area 234 to the vehicle interior, and further improves heating efficiency by transmitting radiant heat to the occupants.

Additionally, referring further to FIG. 10, a surface contact portion 248 is formed in the interior member 240. The surface contact portion 248 is a portion where the planar heating member 230 contacts. The interior member 240 with which the planar heating member 230 is in contact is formed to be thinner than the area where the planar heating member 230 is not in contact. That is, the surface contact portion 248 of the interior member 240 is formed to be thinner than other portions. Alternatively, the interior member 240 is made of different materials in areas where the planar heating member 230 is in contact with areas that are not in contact. That is, the surface contact portion 248 of the interior member 240 is made of a material with higher thermal conductivity than other portions.

Through this configuration, the radiant heat generated from the planar heating member 230 is transmitted more smoothly to the vehicle interior through the surface contact portion 248 of the interior member 240, thereby further maximizing the radiant heat performance of the heating device.

So far, the vehicle heating device and the vehicle air conditioning device equipped with the same according to the present invention have been described with reference to the embodiments shown in the drawings, but these are merely examples, and anyone skilled in the art can make various modifications and other equivalent embodiments. You will understand that Therefore, the true scope of technical protection should be determined by the technical spirit of the attached patent claims.

100: air conditioning unit 102: evaporator
103: Heater core
110: air conditioning case 111: air inlet
112: Defrost vent 113: All seat vents
114,115: Floorvent 115: Tempdoor
116: deep door 117: vent door
118: Floor door
200: Vehicle heating device 210: Floor duct
219: discharge port 220: heat conduction member
221: Through hole 230: Plane heating member
231: porous hole 232: electrode portion
233: second heating area 234: first heating area
240: Interior member 241: Grill part
248: Interview contact section 249: Copy hole
300: Vehicle air conditioning device 320: Dash panel
400: Blowing unit

Claims (17)

An air conditioning device for a vehicle connected to an air conditioning case and having a discharge duct for discharging air to the interior of the vehicle; and an interior member disposed between the air conditioning device and the occupant,
The interior member includes a planar heating member,
The planar heating member is:
A first heating area that performs radiant heating by surface heating; and
A heating device for a vehicle consisting of a second heating zone that performs radiation and convection heating. According to claim 1,
A heating device for a vehicle, characterized in that a heat-conducting member is further provided between the discharge duct and the planar heating member. According to claim 1,
A heating device for a vehicle, wherein the planar heating member has a plurality of porous holes formed in a portion corresponding to the discharge duct discharge port. According to claim 1,
The discharge duct is a vehicle heating device configured as a floor duct for discharging air to the lower side of the vehicle interior. According to clause 2,
The planar heating member is disposed between the discharge duct and the interior member, and an opening corresponding to the discharge port of the discharge duct is formed,
The planar heating member is a vehicle heating device capable of convection heating by heating the air passing through the discharge duct outlet and at the same time capable of radiant heating by its own heat generation. According to clause 5,
The second heating area is formed around the opening and performs radiation and convection heating by heating air passing through the opening. The method according to any one of claims 1 to 6,
A heating device for a vehicle, characterized in that the planar heating member is coupled to the interior member so as to be in surface contact. According to clause 5,
A heating device for a vehicle in which the heat conductive member is formed with a plurality of through holes corresponding to the discharge duct discharge port and the opening of the planar heating member. The method according to any one of claims 1 to 6,
A heating device for a vehicle in which the interior member is provided with a grill portion that forms a plurality of holes in a portion corresponding to the discharge duct discharge port. According to clause 9,
A heating device for a vehicle, wherein the grill portion has blades inclined at different angles. The method according to any one of claims 1 to 6,
The planar heating member is a vehicle heating device that is installed to be attached to an interior member or buried in an interior member. The method according to any one of claims 1 to 6,
A heating device for a vehicle in which the heat generation amount per area of the first heating zone and the second heating zone is configured to be different from each other. According to claim 12,
A heating device for a vehicle, characterized in that the heat generation amount per area of the second heating zone is controlled to be higher than the heat generation amount per area of the first heating zone. The method according to any one of claims 1 to 6,
The planar heating member has an electrode portion on one side and a heating strip connected to the electrode portion, and the heating strip is configured in series or parallel. The method according to any one of claims 1 to 6,
A heating device for a vehicle in which a plurality of radiation holes are formed in the interior member to transmit radiant heat of the first heating area to the interior of the vehicle. According to clause 7,
A vehicle heating device in which the interior member with which the planar heating member is in contact is formed to be thinner than the area where the planar heating member is not in contact, or where the area where the planar heating member is in contact and the area where the planar heating member is not in contact are made of different materials. In the vehicle air conditioning device including an air conditioning case configured to discharge air conditioning wind into the vehicle interior with an air flow path formed therein,
a discharge duct connected to the air conditioning case to discharge air to the interior of the vehicle; and
Includes an interior member disposed between the air conditioning device and the occupant,
The interior member includes a planar heating member,
The planar heating member is:
A first heating area that performs radiant heating by surface heating; and
An air conditioning device for a vehicle consisting of a second heating zone that performs radiant and convection heating.

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