KR20000000136A - Cooling and heating system for vehicle - Google Patents

Abstract

PURPOSE: An air-conditioning and heating device for a car is provided to improve more the efficiency of an air-conditioning and heating not by giving an overload to an engine and not by using pollution materials such as a cooling agent, and formed in a simple structure not to have much space of an engine room. CONSTITUTION: The air-conditioning and heating device for a car comprises:a first duct(10) in the side of an instrument panel of a car; an air inlet hole on one side of the first duct(10) having an ambient air inflow hole(12) formed to directly and forcibly flow in air from an engine room or outside by a ventilation fan(32) and having a re-rotation air inflow hole(14) to flow in the air that re-rotates the indoor of a car; an air outlet hole on the other side of the first duct(10) to be able to outlet the flowed air to the indoor of the car, containing an outlet hole of a front glass side of a panel, an outlet hole(17) indoors, and an outlet hole(18) of a floor side.

Description

Cooling and heating system for automobiles {Cooling and heating system for vehicle}

The present invention relates to a heating and cooling device for an automobile, and more particularly, to an automotive heating and cooling device for cooling and heating a vehicle interior by using semiconductor characteristics of a thermoelectric element.

In general, a car's heating and cooling system not only keeps the indoor temperature constant in spite of a change in the ambient temperature, but also selectively selects the inlet air for various purposes, for example, to remove steam or frost on the window glass. An air conditioning system that circulates by heating or cooling.

As shown in FIG. 1, a conventional automotive air conditioner is provided with a duct 1 on an instrument panel side, which is not shown, and an air inlet 2 on one side of the duct 1. That is, the outside air inlet port 2a through which air is directly introduced from the engine room (not shown) or the outside by the blower fan 4, and the recirculation air inlet port 2b through which the air recirculated inside the car is introduced. ) Is provided. On the other hand, the other side of the duct 1 has an air outlet 3 for discharging air toward the interior, that is, a floor side outlet 3c as well as a front glass side outlet 3a and an interior side outlet 3b of the panel. ) Is provided. And inside the duct (1) is installed a major component of the cold, heating device that can cool or heat the air flowing through the air inlet (2). That is, the heater 5 and the evaporator 6 are embedded in the duct 1 in a state in which they are separated from each other. In particular, the evaporator 6 may include various compressors such as the compressor 7 and the condenser 8. Piping is carried out together with the components of the cooling unit to circulate the refrigerant.

The conventional air conditioning and heating device provided as described above is automatically controlled to match the preset temperature by measuring the vehicle interior temperature and the temperature of the outside air by manual selection of a user or operation of a temperature sensor (not shown). That is, when it is necessary to increase the room temperature, the heater 5 is operated to heat the inlet air, while when the room temperature needs to be lowered, the compressor 8 is operated to lower the temperature of the inlet air on the evaporator 7 side. After that, the user wants to supply the parts.

However, such a conventional heating and cooling system has a problem that not only adversely affects the performance of the vehicle but also considerably increases the energy loss since the engine is considerably loaded when the cooling system is operated. Due to this, the price of the vehicle rises and breakdowns are very frequent.

In addition, various components (compressors, condensers, etc.) of the cooling system occupy a certain space in the engine room, and the weight burden increases, thus countering the weight reduction of the vehicle.

As a result, the use of a conventional heating and cooling device not only makes a user feel a great inconvenience while driving, but also increases the consumption of fuel or a battery, thereby lowering economic efficiency and shortening the life of the vehicle.

Therefore, the present invention was created to solve the above-mentioned problems, an object of the present invention is to provide an automotive heating and cooling device that can further increase the efficiency of heating and cooling without overloading the engine and using pollutants such as a refrigerant To provide.

In addition, to provide a car heating and cooling device with a simple structure so as not to take up a lot of space in the engine room.

1 is a view schematically showing the overall configuration of a vehicle air conditioning apparatus according to a conventional embodiment.

2 is a view schematically showing the overall configuration of a vehicle heating and cooling device according to an embodiment of the present invention.

3 is a perspective view of main parts of FIG. 2;

4 is a cross-sectional view taken along the line A-A of FIG.

FIG. 5 is a cutaway cross-sectional view of the conducting pipe shown in FIG. 3. FIG.

6A and 6B are circuit diagrams for explaining the operation relationship of the present invention, Fig. 6A is a circuit diagram relating to a cooling action, and Fig. 6B is a circuit diagram relating to a heating action.

Explanation of symbols on the main parts of the drawings

10: first duct, 12, 14, 22: air intake,

16,17,18,24: air outlet, 20: second duct,

32, 34: blowing fan, 40: heat exchange means,

42: thermoelectric element, 44: first heat transfer plate,

45: second heat transfer plate, 46: conduction pipe,

46b: heat transfer member, 46c: working fluid,

48: pin, 50: switching means,

52: first switch, 54: second switch,

60: battery.

An automotive air conditioning apparatus according to the present invention for achieving the above object comprises a first duct having a plurality of air inlets and outlets for sucking and circulating the outside air or recirculated air of the car to the interior, and the outside air of the car A second duct capable of inhaling and discharging the bay, a plurality of blow fans installed to force the air to be forced into the first and second ducts, and the first and second ducts, A heat exchange means for converting and supplying cooling air or warm air toward the first duct by switching the flow of the supply current of the battery; and switching means for switching the current flow direction of the battery supplied to the heat exchange means. Characterized in that.

The heat exchange means includes a thermoelectric element which simultaneously performs heating and cooling operations in accordance with a power supply of a battery, first and second heating plates attached to both sides of the thermoelectric element, and embedded in the first and second heating plates, respectively. And a plurality of conductive pipes which are bent and projected in the vertical direction, and a plurality of fins which are attached at predetermined intervals in the longitudinal direction of the conductive pipe.

Preferably, the conductive pipe is further attached to a heat transfer member made of a porous sintered alloy, and sealed after the working fluid is injected under vacuum.

Preferably, the switching means includes first and second switches each having a plurality of terminals selectively connected to alternately flow the battery current in the positive and reverse directions according to a predetermined control signal.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

2 is a view schematically showing the overall configuration of a vehicle heating and cooling device according to an embodiment of the present invention. 3 is a perspective view illustrating main parts of FIG. 2, and FIG. 4 is a cross-sectional view taken along line AA of FIG. 3. FIG. 5 is a cutaway sectional view of the conducting pipe shown in FIG. 3. FIG.

In the drawing, a first duct 10 is provided on an instrument panel side of an automobile, and an engine room (not shown) is provided on one side of the first duct 10 by a blower fan 32. In addition, an air inlet is formed of an outside air inlet 12 through which air is directly introduced from the outside and a recirculating air inlet 14 through which air recirculated through the vehicle interior is introduced. On the other hand, the air on the other side of the first duct 10, the air discharge port consisting of the front glass side outlet 16 and the indoor side outlet 17 of the panel as well as the floor side outlet 18 is introduced into the room. It is provided to be discharged to the side.

In this embodiment, the second duct 20 is further provided on one side of the first duct 10 to forcibly suck and discharge only the outside air of the vehicle by another blower fan 34. Another air inlet 22 and air outlet 24 are also formed in the duct 20.

In particular, reference numeral 40 denotes a heat exchange means, which is a main component of the present embodiment, which is installed to be common to the inside of the first and second ducts 10 and 20 to switch the current flow of the battery 60. By converting the cooling air or the warm air toward the first duct 10 to supply.

That is, the heat exchange means 40, as shown in more detail in Figures 3 and 4, the thermoelectric element 42 is coupled to the portion where the first and second ducts 10, 20 are in contact, which is a battery According to the power supply of (60), one side is a semiconductor element in which a heating action and the other surface perform a cooling action simultaneously.

On both sides of the thermoelectric element 42, for example, first and second heat transfer plates 44 and 45 made of aluminum (Al) are attached to each other by using an epoxy resin. Here, the first heat transfer plate 44 is coupled to face the inside of the first duct 10, while the second heat transfer plate 45 is coupled to face the inside of the second duct 20.

In the first and second heat transfer plates 44 and 45, for example, a plurality of conductive pipes 46 made of a material such as copper (Cu) or aluminum (Al) are embedded and bent in the vertical direction to protrude. . In addition, in the vertically protruding longitudinal direction of the conductive pipe 46, for example, fins 48 made of, for example, aluminum may be attached in multiple layers at predetermined intervals.

Furthermore, as shown in FIG. 5, the conductive pipe 46 further has a heat transfer member 46b made of an alloy material of a porous sintered metal therein, and the working fluid 46c in a vacuum state. It is highly desirable to be injected into and sealed with a stopper 46a, such as a ceramic. Here, the working fluid 46c, for example, uses gases such as argon (Ar), helium (He), nitrogen (N ₂ ) for cryogenic use, water, ethanol (Ethanol) for low temperature , Methanol, acetone, and the like are preferably used, and cesium, sodium, lithium, or the like is preferably used for high temperature. This is because using only a general metal pipe, in particular in a bent state, the thermal conductivity to the furthest away from the heating element is significantly reduced. For reference, as a result of experiment using the conductive pipe 46 of the present embodiment, a thermal conductivity of 90% or more is proved, so that the conductive pipe 46 and the longest distance conductive pipe embedded in the first and second heat transfer plates 44 and 45 are provided. This solves the temperature gap between the (46) pages.

Reference numeral 50 denotes a switching means, which is connected to the thermoelectric element 42 of the heat exchange means 40 means, which means to reverse the direction of flow of current supplied from the battery 60.

The switching means 50 is a plurality of terminals (a, b, B1, c) selectively connected so that the current of the battery 60 alternately flows in the forward and reverse directions of the thermoelectric element 42 according to a predetermined control signal The first and second switches 52 and 54 are provided with, d and B2, respectively. That is, the a terminal of the first switch 52 and the d terminal of the second switch 54 are connected in parallel to one terminal of the thermoelectric element 42, and the first switch is connected to the other terminal of the thermoelectric element 42. The b terminal of 52 and the c terminal of the second switch 54 are connected in parallel. The B1 terminal of the first switch 52 is connected to the (+) pole of the battery 60, and the B2 terminal of the second switch 54 is connected to the (−) pole of the battery 60, respectively.

Reference numeral 70 denotes a wind direction controller.

The operation relationship of the vehicle air conditioning apparatus according to the present invention provided as described above will be described with reference to FIGS. 6A and 6B.

6A and 6B are circuit diagrams for explaining the operation relationship of the present invention. FIG. 6A is a circuit diagram relating to a cooling action, and FIG. 6B is a circuit diagram relating to a heating action.

In FIG. 6A, a predetermined control signal is controlled by the control unit, which is not shown, according to a manual selection or an operation of a temperature sensing sensor which is sensed according to a preset temperature by measuring a temperature of a vehicle interior temperature and an intake air. Terminal B1 of the first switch 52 connected to the (+) pole of the battery 60 is connected to the a terminal, and the c terminal of the second switch 54 is connected to the battery 60. When interconnected with the B2 terminal connected to the negative pole of, the current flow in the thermoelectric element 42 flows from the T1 terminal to the T2 terminal as shown by the arrow direction, and it is assumed to flow in the positive direction. In this case, assuming that the first heat transfer plate 44 side of the thermoelectric element 42 is cooled while the second heat transfer plate 45 side is heated, air introduced into the first duct 10 passes through the first duct 10. The cooling pipe is rapidly cooled while passing through the conductive pipes 46 and the fins 48 protruding to the side.

On the other hand, as shown in Figure 6b, according to a predetermined control signal, the b terminal of the first switch 52, the B1 terminal connected to the (+) pole of the battery 60, and the d terminal of the second switch 54 When each switching connection with the B2 terminal connected to the (-) pole of the battery 60, the direction of current flow through the thermoelectric element 42 is reversed from the T2 terminal to the T1 terminal, that is, in the reverse direction. Accordingly, the thermoelectric element 42 heats the first heat transfer plate 44 and cools the second heat transfer plate 45, thereby passing through the conductive pipes 46 and the fins 48 on the side of the first duct 10. The incoming air, on the contrary, is rapidly heated to supply hot air to the room.

Of course, the air introduced into the second duct 20 is forcibly discharged by the blower fan 34, and thus is cooled or heated through the conductive pipe 46 and the plate 48 of the second heat transfer plate 45. The air will be exhausted out of the car. In particular, in the winter, it is preferable to introduce relatively heated air from the engine room and discharge it to the outside so as not to overcool the second heat transfer plate 45.

As a result, the heating and cooling device of the present invention only changes the direction of the current supplied to the thermoelectric element 42 so that the first heat transfer plate 44 is always provided toward the inside of the first duct 10 without changing the connection structure of the duct. The inlet air, which is cooled or heated via the conduction pipe 46 and the fins 48, is supplied to the vehicle interior.

According to the present invention described above, the efficiency of heating and cooling can be further increased without overloading the engine. For example, in the case of heating, even if a current of about 12 V 4 A flows, the instantaneous temperature can be raised to + 100 ° C. Since various components of the conventional cooling device are not required, the space utilization is excellent and the weight burden can be reduced, which contributes to the compact and lightweight vehicle. It is economical because it can maximize efficiency with relatively simple structure. Car fuel and battery consumption can be significantly reduced. Long-term operation also increases user convenience. It is very environmentally friendly because it can eliminate pollution and ozone layer destruction caused by refrigerant problem.

Claims (4)

A first duct having a plurality of air inlets and outlets for sucking and circulating the outside air or recirculating air of the vehicle, A second duct capable of sucking and discharging only the outside air of the vehicle, A plurality of blowing fans installed to forcibly transfer air into the first and second ducts; A heat exchange means installed in common within the first and second ducts so as to convert the supply current of the battery and to convert the cooling air or the warm air to the first duct and to supply the air; And switching means for switching a current flow direction of a battery supplied to said heat exchange means. The method of claim 1, The heat exchanging means includes a thermoelectric element in which heating and cooling are simultaneously performed according to a power supply of a battery; First and second heat transfer plates respectively attached to both sides of the thermoelectric element, A plurality of conductive pipes embedded in the first and second heat transfer plates and bent and projected in a vertical direction; And a plurality of fins attached at predetermined intervals in the longitudinal direction of the conductive pipe. The method of claim 2, The conductive pipe is further attached to the heat-transfer member made of a porous sintered alloy therein, the heating and cooling device for a vehicle, characterized in that the sealing after the working fluid is injected in a vacuum state. The method according to claim 1 or 2, The switching means includes a first switch and a second switch each having a plurality of terminals selectively connected to alternately flow the battery current in the positive and reverse directions according to a predetermined control signal. Air conditioning unit.