KR20040002021A - Air conditioner system for automobile using thermoacoustic effect - Google Patents

Abstract

PURPOSE: An air-conditioning system for an automobile using thermo-acoustic effect is provided not to use CFC(ChloroFluoroCarbon) causing environmental problem, to prevent trouble by not using a driving part such as a rotating part or a frictional part, and not to use a compressor needing large power and causing main noise. CONSTITUTION: An air-conditioning system includes a thermo-acoustic cooling unit forming a low temperature part and a high temperature part by conduction of heat to a sound source generated on a solid boundary surface arranged along vibration transmitting direction of gaseous medium of sound wave during generation of the sound wave; a low temperature circulating fluid line(60) and a high temperature circulating fluid line(70) installed so that circulating fluid flowing therein exchanges heat in the low temperature part and the high temperature part; and a cooling unit(80) and a heat radiating unit(90) installed on the low temperature circulating fluid line and the high temperature circulating fluid line, respectively, so that circulating fluid having exchanged heat in the thermo-acoustic cooling unit and air passing by exchange heat with each other.

Description

Air conditioner system for automobile using thermoacoustic effect

The present invention relates to an automotive air conditioning system using a thermoacoustic effect, and more particularly, sonic wave generation means, resonators, stacks, cold heat exchangers and high temperature heat exchangers, low temperature circulation fluid lines and high temperature circulation fluid lines, cooling The present invention relates to an automotive air conditioning system using a thermoacoustic effect composed of a unit, a heat dissipation unit, and the like.

Generally, there are steam compression type, electronic refrigeration type, steam injection type, vortex tube type, and among these cooling methods, the cooling method employed in the automotive air conditioning system is steam compression using freon as a refrigerant. Expression

That is, the automotive air conditioner system uses latent heat of the refrigerant compressed and circulated by the rotational force of the engine, and is mainly composed of four main components: an evaporator, a compressor, a condenser, and an expansion valve. A brief description is as follows.

First, when the automotive air conditioner system is operated, the gaseous refrigerant is sucked and compressed from the evaporator to the compressor and then sent to the condenser as a gas at high temperature and high pressure, and the refrigerant cooled by the condenser passes through the expansion valve. At the same time, it expands to the low-temperature and low-pressure wet steam state and is sent to the evaporator to vaporize it to the low-temperature and low-pressure gas state.

Here, the refrigerant passing through the evaporator is deprived of the heat of the air passing through the vaporization when the vaporization, the cooling air is cooled as the cooled air flows into the interior of the vehicle.

However, the cooling method of the automotive air conditioner system uses a chlorofluorocarbon (CFC) as a refrigerant, which causes severe environmental problems such as destroying the earth's ozone layer and promoting global warming when discharged outside. There is an urgent need to develop alternative refrigerants or systems.

In addition, in the steam compression cooling method described above, failure occurs frequently by employing a complicated mechanical structure, and in particular, a compressor that sucks and compresses a refrigerant requires a large amount of power during operation and generates a large noise. there was.

Therefore, the present invention is invented to solve the above problems, there is no need for a refrigerant, such as chlorofluorocarbons (CFC) that cause environmental problems, there is almost no failure occurs because there is no driving part such as a rotating part or a friction part, It is an object of the present invention to provide a car air conditioner system using a thermoacoustic effect that requires a large amount of power when driving, the compressor that was the main noise source of the air conditioner system is unnecessary.

1 is a device block diagram showing the configuration of an automotive air conditioning system according to the present invention,

FIG. 2 is an enlarged view of a stack illustrating a state in which heat is transferred at an interface between a stack and a gas medium due to standing wave vibration of a gas medium in a stack channel due to sound waves

3 is an installation state diagram showing a state in which a heat pipe is installed in a cold heat exchanger and a high temperature heat exchanger.

<Explanation of symbols for the main parts of the drawings>

10: sound wave generating means 12: woofers picker

14 drive means 20 resonator

30 stack 40 cold heat exchanger

50: high temperature heat exchanger 60: low temperature circulation fluid line

70: high temperature circulating fluid line 80: cooling unit

90: heat dissipation unit

Hereinafter, the present invention will be described with reference to the accompanying drawings.

Automotive air conditioning system using the thermoacoustic effect according to the present invention

A thermoacoustic cooling device in which a low temperature portion and a high temperature portion are formed by heat movement toward a sound source generated when sound waves are generated on a solid interface disposed along a vibration transfer direction of a gas medium by sound waves;

A low temperature circulating fluid line (60) and a high temperature circulating fluid line (70) configured to be installed so that the circulating fluid flowing therein may be heat-exchanged in the low temperature portion and the high temperature portion, respectively;

Cooling unit 80 is installed on each of the low temperature circulating fluid line 60 and the high temperature circulating fluid line 70, and configured to exchange heat between the circulating fluid heat-exchanged in the thermoacoustic cooling device and the air passing through the surroundings. And a heat dissipation unit 90;

Characterized in that comprises a.

In particular, the thermoacoustic cooling device includes a sound wave generating means (10) consisting of a woofer picker (12) and a driving means (14) for generating sound waves of high sound pressure, and the heat insulation wall (22) from the sound wave generating means (10). A resonator 20 which makes sound waves transmitted through the gas medium filled therein into a stationary wave of a predetermined frequency, and a plurality of diaphragms arranged along the vibration transmission direction of the gas medium by sound waves inside the resonator 20. The stack 30 and the high temperature heat exchanger 50 connected to the high temperature end of the stack 30 on the sound wave generator 10 side in the resonator 20 and the cold heat exchanger 40 connected to the opposite high temperature end of the stack 30 Characterized in that the made up.

In particular, the cold heat exchanger 40 and the high temperature heat exchanger 50 is characterized in that the ring-shaped so as not to interfere with the traveling direction of the sound waves generated from the sound wave generating means (10).

In addition, the low temperature circulating fluid line 60 and high temperature circulating fluid line 70 is installed so as to pass around the resonator 20 outside the ring-shaped cold heat exchanger 40 and the high temperature heat exchanger 50 is installed. In addition, the cold heat exchanger (40) and the high temperature heat exchanger (50) are installed in the radially long on the outer circumference so as to be in contact with the circulating fluid passing through the outer periphery of the resonator 20 a plurality of protruding out of the resonator (20) The heat pipes 42 and 52 are provided radially.

In addition, the driving means 14 of the woofer speaker 12 is a frequency generator 16 for generating a waveform of a predetermined frequency when the power is applied, and the woofer speaker 12 by amplifying the frequency generated by the frequency generator 16 It is characterized by consisting of an amplifier (18) input to.

In addition, the gas medium filled in the resonator 20 is characterized in that selected from helium, argon, xenon.

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

1 is a block diagram showing the configuration of a vehicle air conditioner system according to the present invention, Figure 2 is a state in which heat is moved at the interface between the stack and the gas medium by standing wave vibration of the gas medium in the stack channel by sound waves An enlarged view of the illustrated stack.

Reference numeral 1 denotes a battery.

The present invention relates to an automotive air conditioning system using a thermoacoustic effect, and does not use a chlorofluorocarbon (CFC) or an alternative refrigerant that affects the environment, but helium, which is safe even when released into the atmosphere as a vibration transmission medium, Inert gases, such as argon and xenon, are used.

In general, the sound wave is a vibration of density transmitted in the medium, and when the gas medium is filled inside the tube and a solid interface exists along the direction of vibration propagation of the gas medium by the sound wave, the vibration of the density causes a pulsation of pressure. Generate.

This pulsation of pressure causes heat to move in the direction opposite to the direction of vibration propagation of the gaseous medium by sound waves at the solid interface, accompanied by a change in temperature due to adiabatic compression and adiabatic expansion of the gaseous medium in the tube, which is the thermoacoustic effect. effect).

The air conditioner system for automobiles of the present invention utilizes a phenomenon in which heat is moved by sound waves, that is, a thermoacoustic effect. As shown in FIG. 1, the sound wave generating means 10, the resonator 20, the stack 30, It comprises a cold heat exchanger (40) and a high temperature heat exchanger (50), a low temperature circulation fluid line (60) and a high temperature circulation fluid line (70), a cooling unit (80), and a heat dissipation unit (90).

First, the sound wave generating means 10 generates sound waves of high sound pressure, and receives the amplified frequency to generate a sound wave of the high sound pressure speaker 12, and amplified for driving the sound speaker 12 It consists of a drive means 14 for generating a frequency to be input to the woofer speaker 12.

The driving means 14 of the woofer speaker 12 is a frequency generator 16 for generating a waveform of a predetermined frequency when the power is applied, and amplifies the frequency generated by the frequency generator 16 to the woofer speaker 12 The amplifier 18 is comprised.

The woofer picker 12 is equipped with a powerful diaphragm 13 is used to generate a sound wave to receive a frequency from the drive means 14 to generate a high sound pressure sound wave, the sound wave generated by the woofer picker 12 The sound wave generating means 10 has one end of the resonator 20 so that it can be transmitted in the longitudinal direction of the resonator 20 through a gas medium filled in the channel 32 and the resonator 20 of the stack 30 to be described later. It is configured to be installed in the department.

Next, the resonator 20 is to make the sound wave generated in the woofer picker 12 as a stationary wave of a constant frequency, the shape of a pipe (pipe) having a hollow hollow 24 in the heat insulating wall 22 It is provided with.

Inside the hollow portion 24 of the resonator 20 is filled with a gas medium so that the sound waves generated from the woofers picker 12 passes through the channel 32 in the stack 30 and can be delivered along its longitudinal direction. In this gas medium, an inert gas such as helium, argon or xenon, which is safe even when released into the atmosphere, is used.

In addition, the stack 30 is installed in the hollow portion 24 of the resonator 20 in close proximity to the sound wave generating means 10, the longitudinal direction of the resonator 20, that is generated by the right speaker 12 It is composed of a plurality of diaphragm which is arranged long in the traveling direction of the sound wave (the vibration transfer direction of the gas medium by the sound wave) connecting the cold heat exchanger 40 and the high temperature heat exchanger 50.

The stack 30 takes heat from the low temperature circulating fluid through a cold heat exchanger 40 connected to one end, and then releases the heat to the high temperature circulating fluid through the high temperature heat exchanger 50 connected to the other end. Play a role.

The space between the diaphragm in the stack 30, that is, the channel 32, is filled with an inert gas such as helium, argon, and xenon, which are vibration transmission media, similarly to the resonator 20, and is generated by the woofer speaker 12. The high acoustic pressure is passed through the inert gas medium between the channels 32 of the stack 30 to generate a thermoacoustic effect.

That is, in order to allow the endotherm from the low temperature circulating fluid through the cold heat exchanger 40 in the stack 30 and the heat dissipation to the high temperature circulating fluid through the high temperature heat exchanger 50 as described above, the stack 30 ) Has to transfer heat along the longitudinal direction from the cold heat exchanger (40) to the high temperature heat exchanger (50), such that the heat transfer in the stack (30) occurs at the interface of the stack (30) and the gas medium. It is due to the effect.

The thermal movement in the stack 30 is due to the standing wave vibration of the gas medium in the channel 32 due to sound waves, as shown in FIG.

That is, the pulsation of pressure is generated in the gas medium in the channel 32 by the sound waves generated by the woofer picker 12, the pulsation of the pressure is accompanied by a temperature change due to the adiabatic compression and adiabatic expansion of the gas medium. In the process of temperature change, the heat retained by the gas medium is transferred to the stack 30 composed of a plurality of thin plates, and the stack 30 gradually receives the heat transmitted from the gas medium as the sound wave progresses. It moves to the generating means (10).

As a result, when the sound waves of the high sound pressure generated by the woofers picker 12 are transmitted to the gas medium of the stack 30 channel 32 and the resonator 20, the stack 30 is cooled through the cold heat exchanger 40. Heat taken from the circulating fluid is moved along the stack 30 toward the sound wave generating means 10, that is, the high temperature heat exchanger 50, and the heat thus transferred passes through the high temperature heat exchanger 50 and its surroundings. After being delivered to the high temperature circulating fluid, it is released out of the resonator 20.

Meanwhile, the cold heat exchanger 40 and the high temperature heat exchanger 50 are connected to one end and the other end of the stack 30 in the hollow part 24 of the resonator 20, respectively, and the cold heat exchanger 40 ) Is a low temperature circulation fluid flowing along the low temperature circulation fluid line 60, and the high temperature heat exchanger 50 is a heat exchange with the high temperature circulation fluid flowing along the high temperature circulation fluid line (70).

That is, the cold heat exchanger 40 is connected to one end of the stack 30 in the hollow 24 of the resonator 20, that is, the end of the stack 30 opposite to the sound wave generator 10, and the high temperature heat exchange. The group 50 is connected to the other end of the stack 30, that is, the end of the stack 30 toward the sound wave generating means 10.

In addition, the cold heat exchanger 40 and the high temperature heat exchanger 50 is a sound wave generated from the sound wave generating means 10 located at one end of the resonator 20, the channel 32 and the resonator 20 of the stack 30 Since it should not interfere with the progress of the sound wave so that it can be transmitted in the longitudinal direction of the hollow portion 24 of, as shown in FIG.

In addition, as described above, the cold heat exchanger 40 exchanges heat with the low temperature circulation fluid circulated along the low temperature circulation fluid line 60, and the high temperature heat exchanger 50 is the high temperature circulation fluid line 70. In order to exchange heat with the high temperature circulating fluid circulated along the low temperature circulating fluid line 60 and the high temperature circulating fluid line 70, a resonator is installed at a location where the cold heat exchanger 40 and the high temperature heat exchanger 50 are installed. (20) is installed so as to pass around the outside.

At the same time, the cold heat exchanger 40 and the high temperature heat exchanger 50 are radially installed on the outer circumference so as to be in contact with the circulating fluid passing through the outer periphery of the resonator 20 and protrude out of the resonator 20. A plurality of heat pipes 42, 52 are provided radially.

Here, water or glycol may be used as the fluid circulated through the low temperature and high temperature circulating fluid lines 60 and 70.

The cooling unit 80 is a place where the cooling of the air by heat exchange between the cooled low temperature circulating fluid flowing through the interior and the outgoing air passing through the surrounding, is installed on the low temperature circulating fluid line 60, And a blower 82 for air delivery.

The heat dissipation unit 90 is a heat dissipation of the high temperature circulating fluid through heat exchange between the heated high temperature circulating fluid flowing through the inside and the air passing through the surroundings, and is installed on the high temperature circulating fluid line 70. It is possible to implement that the electric fan 92 is included.

Meanwhile, in the low temperature circulating fluid line 60, the low temperature circulating fluid is circulated only when the circulation pump 62 installed on the line is driven, and the low temperature circulating fluid cooled by the cold heat exchanger 40 when the air conditioning system is operated. The air sent to the cooling unit 80 and cooled by the blower 82 is cooled and then circulated to the cold heat exchanger 40 again.

In addition, in the high temperature circulating fluid line 70, the high temperature circulating fluid is circulated only when the circulation pump 72 installed on the line is driven, and the high temperature circulating fluid heated by the high temperature heat exchanger 50 when the air conditioning system is operated. Is sent to the heat dissipation unit 90, cooled, and then circulated to the high temperature heat exchanger 50 again.

Hereinafter, the operating state of the present invention will be described.

First, when the air conditioner switch is turned on to operate an air conditioner system for a vehicle, the sound wave of high sound pressure is generated in the woofer picker 12 while driving the applied frequency generator 16 and the amplifier 18 which are power sources. do.

At the same time, each of the circulation pumps 62 and 72 of the low temperature and high temperature circulation fluid lines 60 and 70 is powered and simultaneously driven, and each circulation fluid is circulated through the corresponding circulation fluid lines 60 and 70.

At this time, the low temperature circulating fluid flowing along the low temperature circulating fluid line 60 passes around the cold heat exchanger 40 and the cooling unit 80, and the high temperature circulating fluid flowing along the high temperature circulating fluid line 70 is the high temperature heat exchanger 50. It is circulated while passing through the surroundings and the heat dissipation unit 90.

In addition, when a sound pressure is generated in the woofer picker 12, the pulsation of pressure is generated in the gas medium in the channel 32 of the stack 30 by this sound wave, the pulsation of the pressure is adiabatic compression and It is accompanied by a change in temperature due to thermal expansion, the heat of the gas medium is transferred to the stack 30 in the process of the temperature change, the stack 30 transfers the heat received from the gas medium to the progress of sound waves Therefore, it is gradually moved toward the sound wave generating means (10).

In addition, the stack 30 moves the heat taken away from the low temperature circulating fluid flowing through the cold heat exchanger 40 toward the high temperature heat exchanger 50, and the low temperature circulating cooled in the cold heat exchanger 40. The fluid flows to the cooling unit 80.

The low temperature circulating fluid introduced into the cooling unit 80 cools the air passing around by the blower 82. When the cooled air is supplied to the vehicle interior, the vehicle interior is cooled.

On the other hand, the heat transferred from the stack 30 toward the high temperature heat exchanger 50 is discharged to the high temperature circulating fluid flowing around the high temperature heat exchanger 50 is discharged out of the resonator 20.

As described above, the high temperature circulation fluid heated in the high temperature heat exchanger 50 is circulated to the high temperature heat exchanger 50 after being cooled to a certain extent in the heat dissipation unit 90.

In this way, the automotive air conditioner system of the present invention utilizes the thermoacoustic effect, and does not require a refrigerant such as chlorofluorocarbon (CFC), which causes environmental problems, and does not require a compressor for sucking and compressing the refrigerant by the rotational force of the engine. Become.

As described above, in the present invention, an automotive air conditioner using a thermoacoustic effect composed of sound wave generation means, resonator, stack, cold heat exchanger and high temperature heat exchanger, low temperature circulation fluid line and high temperature circulation fluid line, cooling unit, heat dissipation unit, etc. By providing a system, the following effects are obtained.

1) There is an advantage that does not require a refrigerant, such as chlorofluorocarbons (CFC) causing environmental problems.

2) There is almost no failure because there is no driving part such as a rotating part or a friction part, thus reducing the maintenance cost.

3) It has the advantage that it requires big power for driving and does not need the compressor which is the main noise source of air conditioner system.

4) There is an advantage that direct electric cooling is possible in an electrically driven system such as a hybrid or an electric vehicle.

5) There is an advantage that the engine can be cooled even when the engine is stopped and before riding by using an auxiliary battery.

Claims (6)

A thermoacoustic cooling device in which a low temperature portion and a high temperature portion are formed by heat movement toward a sound source generated when sound waves are generated on a solid interface disposed along a vibration transfer direction of a gas medium by sound waves; A low temperature circulating fluid line (60) and a high temperature circulating fluid line (70) configured to be installed so that the circulating fluid flowing therein may be heat-exchanged in the low temperature portion and the high temperature portion, respectively; Cooling unit 80 is installed on each of the low temperature circulating fluid line 60 and the high temperature circulating fluid line 70, and configured to exchange heat between the circulating fluid heat-exchanged in the thermoacoustic cooling device and the air passing through the surroundings. And a heat dissipation unit 90; Automotive air conditioning system using a thermoacoustic effect, characterized in that made. 2. The thermoacoustic cooling device according to claim 1, wherein the thermoacoustic cooling device comprises sound wave generating means (10) consisting of a woofer picker (12) and a driving means (14) for generating sound waves of high sound pressure, and heat insulating from the sound wave generating means (10). A resonator 20 which makes sound waves transmitted through the gas medium filled in the wall 22 into a standing wave of a predetermined frequency, and a plurality of which are arranged along the vibration transmission direction of the gas medium by sound waves inside the resonator 20. A stack 30 consisting of a diaphragm and a high temperature heat exchanger 50 connected to the high temperature end of the stack 30 of the sound wave generator 10 inside the resonator 20 and a cold heat exchanger connected to the opposite high temperature end of the stack 30. Automotive air conditioning system using a thermoacoustic effect, characterized in that it comprises a (40). 3. The thermoacoustic effect of claim 2, wherein the cold heat exchanger (40) and the high temperature heat exchanger (50) are ring-shaped so as not to interfere with the traveling direction of the sound waves generated from the sound wave generating means (10). Automotive air conditioning system. According to any one of claims 1 to 3, wherein the low temperature circulating fluid line 60 and high temperature circulating fluid line 70 is the ring-shaped cold heat exchanger 40 and the high temperature heat exchanger 50 is installed in a position It is installed so as to pass around the resonator 20 outside, the cold heat exchanger 40 and the high temperature heat exchanger 50 is long in the radial direction on the outer circumference to be in contact with the circulating fluid passing through the outer periphery of the resonator 20 Automotive air conditioning system using a thermoacoustic effect, characterized in that the radially provided a plurality of heat pipes (42, 52) protruding out of the resonator (20). The driving means 14 of the woofer speaker 12 is a frequency generator 16 for generating a waveform of a constant frequency when the power is applied, and amplifies the frequency generated by the frequency generator 16 Automotive air conditioning system using a thermoacoustic effect, characterized in that consisting of an amplifier (18) input to the woofers speaker (12). The air conditioner system of claim 2, wherein the gas medium filled in the resonator (20) is selected from helium, argon, and xenon.