JP2006226569A - Compact cooling and heating device and cooling and heating method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact cooling and heating device and a cooling and heating method capable of being driven for a long time with small electric power as a refrigerant does not leak and frictional loss is small, being inexpensively manufactured as it does not need components of high precision and has a simple structure, and easily carried as it is compact and lightweight, to condition a temperature in clothes and to cool or heat an affected area of the body as a medical appliance. <P>SOLUTION: In this compact cooling and heating device 1 wherein the refrigerant is circulated in a pipe conduit for cooling or heating, a compressing means 2 has a flexible tube 21 constituting a pipe conduit from an outlet of a heat exchanging means 5 for absorbing heat to an inlet of a heat exchanging means 3 for radiating heat, and a blockage portion moving means 7 for pressing the flexible tube 21 from the external to form a blockage portion 6, and compressing the refrigerant existing between the the blockage portion 6 and an expanding means 4 by moving the blockage portion 6 in the outlet direction of the compressing means 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a small cooling / heating apparatus and a cooling / heating method, and more particularly, a portable portable cooling / heating apparatus for medical use, which is attached to clothes to adjust the temperature in the clothes or to carry and cool or warm an affected part of a human body. The present invention relates to a small cooling / heating apparatus and a cooling / heating method suitable for use as a heating / cooling apparatus.

  Conventionally, as a small-sized cooler, a semiconductor-based thermo module using the Peltier effect is known (Patent Document 1). In this thermo module, N-type and P-type semiconductors are connected in series. When a DC power is supplied by connecting a positive power source to the N-type semiconductor and a negative power source to the P-type semiconductor, the connection between the two is cooled and both ends are connected. It uses the Peltier effect of being heated.

  In addition, as a conventional cooler used in an air conditioner, a refrigerator, etc., a reciprocating compressor that reciprocates a piston in a cylinder and compresses a refrigerant gas, and two sets of spiral parts are opposed to each other. There is known a scroll compressor that compresses refrigerant gas by rotating.

  Furthermore, in space suits used in outer space, water-cooled underwear with water-cooled tubes sewn is used to cool the heat generated by the human body. In this water-cooled underwear, a part of the cooling water is led to the vacuum space through the capillaries to evaporate, the water is frozen by the latent heat of evaporation taken away at this time, and the generated ice further sublimates into space. The cooling water is cooled by using the sublimation heat.

JP 2004-270987 A

  However, the method using the Peltier effect including the invention described in Patent Document 1 has a low efficiency of about 0.3 COP (Coefficient of Performance), so that a desired cooling capacity is obtained. Therefore, the electric power required for it becomes large. For this reason, a high power source such as a fixed power source is required, and it is difficult to apply to a small and portable cooler that can be driven by a battery.

  Further, when trying to downsize a conventional cooler used in an air conditioner, a refrigerator, or the like as it is, the ratio of (seal length of piston sliding part) / (refrigerant volume in cylinder) becomes large. Unless the gap size of the seal of the moving part is reduced, the leakage rate per unit volume of the refrigerant increases. On the other hand, if it is attempted to narrow the clearance dimension of the sliding portion, it is necessary to increase the working accuracy, and thus the manufacturing cost increases. Moreover, the reduction of the gap size and the increase in the ratio of (seal length of the piston sliding portion) / (refrigerant volume in the cylinder) lead to a decrease in efficiency due to an increase in piston friction loss, and also due to wear. There is also a problem that the life of the cooler is reduced.

  Furthermore, the water-cooled underwear in the above space suit is lightweight and does not require a compressor, and operates only by replenishing water, but it does not operate unless the ambient atmosphere is vacuum, so it is assumed to be used on the ground. It is practically impossible to apply to a cooling machine.

  The present invention has been made to solve such problems, and since there is no leakage of refrigerant and there is little friction loss, it can be driven for a long time with a small amount of power and does not require highly accurate parts. Because of its simple structure, it can be manufactured at low cost, and since it is compact and lightweight, it can be easily carried and the temperature inside the clothes can be adjusted, or the affected part of the human body can be cooled or warmed as a medical device. It aims at providing a small cooling / heating apparatus and cooling / heating method.

  The features of the small cooling / heating apparatus according to the present invention are: compression means for compressing the refrigerant, heat exchange means for radiating heat radiating the refrigerant compressed by the compression means, and heat radiated by the heat exchange means for radiating heat The expansion means for depressurizing the refrigerant and the heat-absorbing heat exchanging means for absorbing heat after being depressurized by the expansion means are connected by a pipe line, and the refrigerant is circulated in the pipe line for cooling or heating. A compact cooling and heating device, wherein the compression means comprises a flexible tube that forms a conduit from the outlet of the heat absorption heat exchange means to the inlet of the heat dissipation heat exchange means, and the flexible tube externally And a closed portion moving means for compressing the refrigerant existing between the expansion means by moving the closed portion toward the outlet of the compression means.

  Further, in the present invention, the closing portion moving means includes a tube guide provided with a substantially arcuate guide surface along the flexible tube, and the flexible tube between the guide surface of the tube guide. It is good also as a structure which has the several press roller which pinches and forms the obstruction | occlusion part, and the roller drive part which revolves while rotating these press rollers along the said tube guide.

  Further, in the present invention, the entire conduit for circulating the refrigerant is constituted by a flexible tube, and as the expansion means, the flexible tube is constituted by a clip member that presses the flexible tube from the outside to narrow the refrigerant passage. The flexible tube from the outlet of the compression means to the inlet of the expansion means as heat exchange means, and the flexibility from the outlet of the expansion means to the inlet of the compression means as the heat exchange means for heat absorption It may be constituted by a tube. In this case, each component can be configured easily and inexpensively, and can be easily replaced as a replacement consumable even if the flexible tube deteriorates.

  In the present invention, the flexible tube is composed of a plurality of layers, the innermost layer is made of a material that is soft and has high adhesion when pressed, and the outer layer is more stretchable than the innermost layer. Is preferably made of a material having a small bending resistance.

  Furthermore, in the present invention, the refrigerant existing between the closing portion and the compression means is preliminarily compressed between the compression means and the heat-dissipating heat exchange means, and the compression means from the heat-dissipating heat exchange means side. It is preferable to provide a check valve for preventing the compressed refrigerant from flowing back.

  Further, the cooling and heating method according to the present invention is characterized by a compression step for compressing the refrigerant enclosed in the pipe, a heat release step for releasing heat from the refrigerant compressed in the compression step, and after heat release in the heat release step. A cooling and heating method in which the refrigerant is cooled or heated by sequentially passing through an expansion step for decompressing the refrigerant and an endothermic step for absorbing heat into the refrigerant that has been decompressed in the expansion step. The conduit from the processing end outlet to the processing start inlet by the heat dissipation step is configured by a flexible tube, and the compression tube start position of the flexible tube is pressurized from the outside to form a closed portion. By moving the closing part in the direction of refrigerant circulation, it is located between the start position of the expansion step. There refrigerant to the point of compression.

  In the present invention, in the compression step, the flexible tube is sandwiched between a tube guide and a pressing roller, and the blocking portion is formed by pressing the pressing roller to the tube guide side. It is preferable to compress the refrigerant by rotating the pressing roller in the circulation direction of the refrigerant while rotating.

  Furthermore, in the present invention, the entire conduit for circulating the refrigerant is configured by a flexible tube, and the flexible tube exists between the end position of the compression step and the start position of the expansion step in the heat dissipation step. In the expansion step, the refrigerant is depressurized by passing through a minute gap formed by pressing the flexible tube from the outside, and in the endothermic step, the expansion step starts from the end position of the expansion step. It is preferable to absorb heat through the flexible tube existing up to the start position of the compression step.

  According to the present invention, since there is no leakage of the refrigerant and there is little friction loss, it can be driven for a long time with a small amount of power, and it can be manufactured at low cost because it does not require high-precision parts and has a simple structure. Since it is small and lightweight, it can be easily carried and the temperature inside the clothes can be adjusted, or the affected part of the human body can be cooled or warmed as a medical device.

  Hereinafter, embodiments of a small cooling / heating apparatus 1 and a cooling / heating method according to the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic diagram showing an overall configuration of a small cooling / heating apparatus 1 in the present embodiment, and FIG. 2 is a diagram showing a cooling / heating principle of the present embodiment. The small cooling / heating apparatus 1 of the present embodiment is mainly composed of a compressor 2 that compresses a refrigerant, a heat dissipation heat exchanger 3 that dissipates heat of the refrigerant compressed by the compressor 2, and the heat dissipation heat exchanger 3. It has an expansion valve 4 that depressurizes the refrigerant after heat dissipation, and a heat-absorbing heat exchanger 5 that absorbs heat of the refrigerant that has been depressurized by the expansion valve 4. A refrigerant is circulated in the passage.

  The principle of cooling and heating in the small cooling and heating device 1 of the present embodiment employs a vapor compression method in which the refrigerant is evaporated by ambient heat under low temperature and low pressure, and the surrounding is cooled. Specifically, in (1) of FIG. 2, the refrigerant is in a low-pressure saturated vapor state, and is compressed by the compressor 2 (compression step), and becomes a high-temperature high-pressure gas in (2). By releasing the heat Q1 to the surroundings by the heat exchanger 3 for heat radiation (heat radiation step), the refrigerant is cooled and condensed, and becomes a high-pressure saturated liquid in (3). This liquid refrigerant is squeezed and expanded by the expansion valve 4 (expansion step). In (4), a low-temperature and low-pressure gas-liquid mixed state is obtained, and the heat absorption heat exchanger 5 takes heat Q2 from the surroundings (endothermic step). Return to the state of (1).

  In the refrigeration cycle described above, the surroundings are cooled by the heat-absorbing heat exchanger 5 and the surroundings are warmed by the heat-dissipating heat exchanger 3. And when using this apparatus as a cooling device, the cooling effect | action of the heat exchanger 5 for heat absorption is utilized, and the heat from the heat exchanger 3 for thermal radiation is dissipated in ambient air. On the other hand, when this apparatus is used as a heating apparatus, the heat radiation from the heat-dissipating heat exchanger 3 is used for heat, and the heat-absorbing heat exchanger 5 absorbs heat from the ambient air.

  The heat transfer between the refrigerant in the pipe line and the external environment in the heat-dissipating heat exchanger 3 and the heat-absorbing heat exchanger 5 is simply placing the two heat exchangers 3 and 5 in the external environment. May be performed by natural convection heat transfer generated by In addition, when a small electric fan is installed in each of the heat exchangers 3 and 5, since efficient forced convection heat transfer can be used by blowing outside air, each heat exchanger unit 3 and 3 can be used. The size of 5 can be reduced.

Next, specific components constituting the present embodiment will be described with reference to FIG.
The compressor 2 is provided in a pipe line from the outlet of the heat absorption heat exchanger 5 to the inlet of the heat dissipation heat exchanger 3, and a flexible tube 21 constituting the pipe, and the flexible tube A tube guide 23 having a substantially arcuate guide surface 22 along which the tube 21 runs, and four pressing rollers 24 that rotate while pressing the flexible tube 21 between the guide surface 22 of the tube guide 23; The roller 24 has a roller driving unit 26 that pivotally supports the pressing roller 24 on the support arm 25 and rotates along the tube guide 23.

  In the compressor 2, the closing portion 6 is formed in the flexible tube 21 by pressing the flexible tube 21 against the guide surface 22 of the tube guide 23 using the pressing roller 24. The roller driving unit 26 revolves the pressing roller 24 to function as the blocking unit moving means 7 that moves the blocking unit 6 toward the outlet of the compressor 2. When the pressing roller 24 rotates and moves along the guide surface 22, the flexible tube 21 is squeezed and moved so that the refrigerant gas downstream from the closing portion 6 is pushed toward the outlet of the compressor 2. . Thereby, the refrigerant | coolant between the said obstruction | occlusion part 6 and the expansion valve 4 is compressed. In order to move and compress the refrigerant gas in this way, the distance between the guide surface 22 of the tube guide 23 and the pressing roller 24 is set to be not more than twice the wall thickness of the flexible tube 21, thereby allowing flexibility. The closed portion 6 is formed in the conductive tube 21.

  Each pressing roller 24 is pivotally supported by a roller driving unit 26 by a support arm 25. However, a disk disk is attached to the roller driving unit 26 and is rotatably supported around the circumference of the disk disk. May be. Further, the number of pressing rollers 24 is not limited to four, and may be increased or decreased in consideration of compression efficiency. Increasing the number of the pressure rollers 24 decreases the pressure fluctuation of the refrigerant in the system and increases the compression efficiency. However, since the frictional resistance increases with the increase in the number of rollers, usually about 2 to 5 pressure rollers. 24 is used.

  The heat exchanger 3 for heat radiation functions as a condenser that radiates heat from the refrigerant to the surroundings. The heat absorption heat exchanger 5 functions as an evaporator that absorbs heat from the surroundings to the refrigerant. Any heat exchanger may be used, but in this embodiment, the pipes connecting the components are configured by the flexible tube 21, and the flexible tube 21 is used as it is for heat dissipation. It is used as the exchanger 3 and the heat exchanger 5 for heat absorption. That is, one long loop-shaped flexible tube 21 is used, a part of which is used as the compressor 2, and a part from the outlet of the compressor 2 to the inlet of the expansion valve 4 is used as the heat-dissipating heat exchanger 3. And the portion from the outlet of the expansion valve 4 to the inlet of the compressor 2 is used as the heat-absorbing heat exchanger 5.

  The expansion valve 4 is usually a throttle valve. When the loop-like flexible tube 21 is used, the flexible tube between the heat-dissipating heat exchanger 3 and the heat-absorbing heat exchanger 5 is used. 21 is moderately pressed from the outside, and a minute gap formed in the flexible tube 21 is used as a throttle valve. In this case, the member that compresses the flexible tube 21 is a clip-like member having a gap having a width obtained by adding a throttle valve gap to twice the wall thickness of the flexible tube 21 as shown in FIG. What is necessary is just to pinch the flexible tube 21. As a result, the refrigerant existing between the closing portion 6 and the expansion valve 4 is close to a sealed state, and the refrigerant is compressed by moving the closing portion 6 in the direction of the outlet of the compressor 2. Of course, conventionally used throttle valves, capillary tubes and the like can also be used.

  Further, a check valve 8 is attached between the compressor 2 and the heat radiating heat exchanger 3. The check valve 8 has a function of preliminarily compressing the refrigerant existing between the closed portion 6 and a function of preventing a high-pressure refrigerant from flowing backward from the heat exchanger 3 for heat dissipation to the compressor 2. ing. Specifically, when the refrigerant is pushed out in the direction from the compressor 2 to the heat-dissipating heat exchanger 3, only the refrigerant having a predetermined pressure (here, the pressure on the side opposite to the check valve 8) or higher is allowed to pass through and the heat is dissipated. The refrigerant is prevented from passing in the direction from the heat exchanger 3 to the compressor 2. Accordingly, the check valve 8 preliminarily compresses the refrigerant to the predetermined pressure with the closing portion 6 and can send the refrigerant having the high pressure to the heat radiating heat exchanger 3 without backflowing. It becomes possible. Of course, even if the check valve 8 is not provided, it functions as a cooling and heating device. However, as the pressing roller 24 is rotated by the roller driving unit 26, one pressing roller 24 is detached from the end of the tube guide 23. If the check valve 8 is not provided, a high-pressure refrigerant gas flows backward from the heat-dissipating heat exchanger 3 and the pressure in the heat-dissipating heat exchanger 3 is momentarily reduced. The pressure fluctuation in the heat exchanger 3 for heat dissipation accompanying the rotation of the pressing roller 24 can be reduced.

  On the other hand, the structure of the flexible tube 21 is configured in a plurality of layers. The innermost layer of the flexible tube 21 is made of a material that is soft and has high adhesion when pressed by the pressing roller 24. The outer layer is made of a material that is less stretchable and less bent than the innermost layer. For example, as the material of the innermost layer, various natural / synthetic rubber materials such as natural rubber and urethane rubber can be used in addition to silicon rubber, and as the material of the outer layer, polyester, Noprene, which is a polypropylene-based thermoplastic elastomer, can be used. For example, when a refrigerant gas having an internal pressure of 3.77 at is sealed in a silicon rubber tube having an inner diameter of 8 mm, a tensile force of about 10 N per 10 mm in the length direction is applied to the film coated on the outside. Since the polyester film having a thickness of 25 μm can withstand a tensile force of about 20 N / (10 mm width) within the elastic limit, it can sufficiently withstand an internal pressure of 3.77 data. Such a tube having a two-layer structure can be formed by a co-extrusion technique in which two types of materials are simultaneously extruded.

  In addition, a single-layer tube (for example, a noprene tube) formed of a material having flexibility that can be deformed when pressed by the pressing roller 24 and having a strength that can withstand the internal pressure of the refrigerant gas on the high-pressure side, Usually, since it is harder than the above-mentioned multi-layered tube, that is, its deformation resistance during compression is large, the driving power of the roller is increased, but it can be functionally used in the compressor 2 of the present embodiment.

  As the flexible tube 21 in this embodiment, a silicon rubber glass braided tube (manufactured by Nissei Electric: HST-10) having a tube inner diameter of 8 mm and a silicon rubber thickness of 0.8 mm was used. This tube is obtained by braiding a reinforcing glass fiber on the outer periphery of a silicon rubber tube having an inner diameter of 8 mm and a wall thickness of 0.8 mm. The silicon tube is excellent in flexibility and durability against mechanical deformation, and has good adhesion between the inner walls when pressed from the outside by the pressing roller 24 in the compressor 2. For this reason, in the flexible tube 21 before and after the closing part 6, the pressure difference between the high-pressure refrigerant gas on the heat dissipation heat exchanger 3 side and the low-pressure refrigerant gas on the heat absorption heat exchanger 5 side is resisted. The refrigerant gas can be shut off with a small pressing force. If the pressing force of the pressing roller 24 can be reduced in this way, the frictional power in the rotating mechanism of the pressing roller 24 is reduced, and consequently the driving power of the compressor 2 can be reduced. By the way, when comparing the silicone rubber tube and the Tygon tube (made by Norton, USA), which is less flexible than this, the roller pressing force for closing so that the same 2.3 atm differential pressure does not leak is 30 N each. Further, the driving torque of the compressor 2 using both is 0.51 Nm and 0.68 Nm, respectively, and a large difference occurs.

  As described above, in order to reduce the roller driving power, the flexible tube 21 needs to have good inner surface adhesion under a small pressing force, be flexible, and have a small deformation resistance during pressing. . For this reason, the same silicon rubber tube with a thin thickness of 0.8 mm is used. However, such a thin silicon rubber tube cannot withstand the internal pressure of the high-pressure refrigerant gas (absolute pressure 3.77 atmospheres) and expands. In order to prevent this, in the present embodiment, a tube having a two-layer structure in which the outer layer of the flexible tube 21 is covered with a thin material having less elasticity than the inner layer material is used. That is, as described above, a thin cloth knitted with glass fiber was coated on the outer layer of the silicon rubber tube. Since the braided fabric is thin, it is crushed softly when the flexible tube 21 is pressed by the pressure roller 24. However, if the silicone rubber tube is expanded by internal pressure, the stretchability of the braided fabric is much smaller than that of the inner layer silicon tube. This expansion can be suppressed.

  In addition, since the flexible tube 21 is easily crushed by the pressure from the outside, the flexible tube 21 is crushed when the internal refrigerant gas becomes atmospheric pressure or lower. Therefore, the temperature of the heat-dissipating heat exchanger 3 in this embodiment cannot be lowered below the saturation temperature corresponding to the atmospheric pressure of the refrigerant being used. For example, when normal butane is used as the refrigerant, the temperature is -0.3 ° C.

  On the other hand, the refrigerant is preferably supplied after being enclosed in the loop-shaped flexible tube 21 or the loop-shaped flexible tube 21 with the check valve 8 in advance. The flexible tube 21 is filled with the refrigerant, for example, by providing a T-shaped branch in a portion of the flexible tube 21 other than the portion sandwiched between the compressors 2 and temporarily evacuating the internal air from there. Then, the refrigerant gas is sealed up to a predetermined pressure, and then the root of the T-shaped branch is melted with heat and sealed. However, it is not limited to such a method.

Further, when considering the type of refrigerant, there are a large number of candidates. However, since the small cooling / heating apparatus 1 of this embodiment is assumed to be used outdoors by many people, environmental problems due to refrigerant leakage are It cannot be ignored. For this reason, non-fluorocarbons are assumed. In addition, the usage environment of the refrigerant is set to 35 ° C. assuming the average daytime in summer in Tokyo. The conditions required for refrigerants under these assumptions are:
1. 1. The price is low and easily available. Non-toxicity 3. In a 35 ° C. environment, the refrigerant is condensed at a pressure of several atmospheric pressures higher than the atmospheric pressure, and the refrigerant temperature at that time is slightly higher than the outside air temperature. Under the environment, four points are necessary that the refrigerant evaporates at a pressure slightly higher than the atmospheric pressure when the refrigerant evaporates, and that the refrigerant temperature at that time is lower than the outside air temperature. Natural refrigerant suitable for this condition is normal _butane: a _{(n-butane C 4 H 10} R600). This normal butane is used as a cartridge fuel for a household desktop cassette stove and is easily available. Further, when used according to the present embodiment, assuming that the usage environment is 35 ° C., the temperature of the refrigerant to be generated (evaporation temperature of the refrigerant) is 10 ° C., and the temperature at exhaust heat (refrigerant aggregation temperature) is 40 ° C. The saturated vapor pressure of normal butane at 40 ° C. is 379.6 kPa, the saturated vapor pressure at 10 ° C. is 149.0 kPa, and it can be seen that both the high pressure side and the low pressure side are moderate pressures.

  Moreover, since normal butane can be used, the user can also fill the flexible tube 21 by himself / herself. For example, as shown in FIG. 3, three valves, that is, a cutoff valve 9, an exhaust valve 10, and a pressure control valve 11, can be attached to the flexible tube 21 and filled with a normal butane cassette 12. Specifically, the shut-off valve 9 is first closed, the exhaust valve 10 is opened to atmospheric pressure, and the nozzle of a normal butane cassette 12 (possible with a cassette-type tabletop stove cartridge) is inserted into the inlet of the pressure control valve 11. When pressed, the refrigerant gas flows into the flexible tube 21. Here, the pressure control valve 11 is a valve that passes gas only when the pressure of normal butane from the cassette is higher than the pressure in the flexible tube 21 by a certain differential pressure or more, and closes when the pressure difference becomes less than a certain value. . Residual gas in the flexible tube 21 is exhausted from the exhaust valve 10 in a few seconds, and normal butane fills the flexible tube 21, so the exhaust valve 10 is closed. Thereafter, when the nozzle of the normal butane cassette 12 is pulled out from the pressure control valve 11 and the shut-off valve 9 is opened, the normal butane filling is completed. With such a mechanism, the user can easily fill or refill the refrigerant by himself / herself. In the refrigerant sealing mechanism of FIG. 3, if the portion other than the valve is configured by the flexible tube 21, the shutoff valve 9 and the exhaust valve 10 of the three valves have the corresponding flexible tube 21 from the outside. It can be realized by pressing and closing. In addition, it is desirable to close between the pressure control valve 11 and the flexible tube 21 in order to prevent refrigerant leakage from the valve seat portion of the pressure control valve 11 after the refrigerant is once sealed.

  Next, a description will be given of the results of making a prototype of the small cooling and heating apparatus 1 of the present embodiment using the above-described normal butane and measuring the characteristics. When normal butane contained in a cartridge for a household tabletop gas stove is used, if the heat exchanger temperature for heat absorption (evaporator temperature) is 10 ° C and the heat exchanger temperature for heat dissipation (condenser temperature) is 40 ° C, The pressure in the heat exchanger 3 for heat radiation is 1.43 atm in absolute pressure, the pressure in the heat exchanger 5 for heat absorption is 3.77 atm, and the COP is 1.86 in the experiment with a cooling capacity of 13.6 W. As a result, the efficiency was significantly higher than that of the conventional thermo-module.

  According to the present embodiment as described above, the compressor 2 is configured to compress the internal refrigerant by moving the closing portion 6 formed in the flexible tube 21, so that there is no refrigerant leakage and friction loss. It can be driven for a long time with little power. Further, since a highly accurate part is not required and the structure is simple, it can be manufactured at a low cost. Therefore, since it can be configured to be small and light, it can be easily carried to adjust the temperature in the clothes, and can be used to cool or warm the affected part of the human body as a medical device.

  In addition, the small cooling / heating apparatus 1 and the cooling / heating method according to the present invention are not limited to the above-described embodiment, and can be appropriately changed.

  For example, in the present embodiment described above, the closing guide moving means 7 is configured by the tube guide 23, the pressing roller 24, and the roller driving unit 26, but the present invention is not limited to this. What is necessary is just to form the obstruction | occlusion part 6 and to move the obstruction | occlusion part 6 to the exit direction of the compressor 2. FIG. Further, as a method of compressing the refrigerant, for example, a speed difference is provided between the two pressing rollers 24 forming the blocking portion 6 and the pressure is applied from the rear pressing roller 24 to the front pressing roller 24. Thus, a method of compressing the refrigerant between the two pressing rollers 24 may be selected.

It is a schematic diagram which shows one Embodiment of the small cooling and heating apparatus which concerns on this invention. It is a schematic diagram which shows the cooling heat principle of this embodiment. It is a schematic diagram which shows an example of the enclosure mechanism of the refrigerant | coolant in this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Compact cooling and heating apparatus 2 Compressor 3 Heat exchanger for heat radiation 4 Expansion valve 5 Heat exchanger for heat absorption 6 Blocking part 7 Blocking part moving means 8 Check valve 9 Shut-off valve 10 Exhaust valve 11 Pressure control valve 12 Normal butane cassette 21 Flexible tube 22 Guide surface 23 Tube guide 24 Press roller 25 Support arm 26 Roller drive unit

Claims (8)

A compression means for compressing the refrigerant; a heat-dissipating heat exchanging means for dissipating the refrigerant compressed by the compressing means; an expansion means for decompressing the refrigerant after being dissipated by the heat-dissipating heat exchange means; and A small cooling and heating device that couples heat absorption means for absorbing heat after depressurizing the refrigerant with pipes, and circulates the refrigerant in the pipes to cool or heat them.
The compression means includes
A flexible tube constituting a pipe line from the outlet of the heat absorbing heat exchanging means to the inlet of the heat dissipating heat exchanging means;
The flexible tube is pressurized from outside to form a closed portion, and the closed portion moving means compresses the refrigerant existing between the expansion means by moving the closed portion toward the outlet of the compressing means. And a small cooling and heating device.   In Claim 1, the said obstruction | occlusion part moving means narrows the said flexible tube between the tube guide provided with the substantially circular arc-shaped guide surface along the said flexible tube, and the guide surface of this tube guide. A small cooling and heating apparatus comprising: a plurality of pressing rollers that are held to form a closing portion; and a roller driving unit that revolves the pressing rollers while rotating along the tube guide.   3. The method according to claim 1, wherein the entire conduit for circulating the refrigerant is configured by a flexible tube, and the expansion means is configured by a clip member that presses the flexible tube from the outside to narrow the passage of the refrigerant. The heat dissipating heat exchanging means is constituted by the flexible tube from the outlet of the compressing means to the inlet of the expansion means, and the heat absorbing heat exchanging means from the outlet of the expansion means to the inlet of the compressing means. A small cooling / heating apparatus characterized by comprising the flexible tube.   In any one of Claims 1-3, the said flexible tube is comprised from the some layer, and while the innermost layer is soft and formed with the raw material with the high adhesiveness at the time of press, an outer layer is the said A small cooling and heating apparatus, characterized in that it is made of a material that is less stretchable and has a lower bending resistance than the innermost layer.   5. The heat dissipation heat exchange according to claim 1, wherein the refrigerant existing between the compression unit and the heat dissipation heat exchange unit is preliminarily compressed between the compression unit and the heat dissipation heat exchange unit. A small cooling / heating apparatus comprising a check valve for preventing the refrigerant compressed from the means side from flowing back to the compression means side. In the compression step for compressing the refrigerant sealed in the pipeline, the heat release step for releasing heat from the refrigerant compressed in the compression step, the expansion step for reducing the pressure of the refrigerant that has been radiated heat in the heat release step, and in the expansion step A cooling and heating method in which cooling or heating is performed by sequentially passing through an endothermic step in which the refrigerant after depressurizing absorbs heat,
In the compression step, a conduit from the process end outlet in the endothermic step to the process start inlet in the heat release step is configured by a flexible tube, and the start position of the compression step in the flexible tube is pressurized from the outside. The cooling and heating method is characterized by compressing the refrigerant existing between the expansion step and the starting position of the expansion step by forming the closed portion and moving the closed portion in the refrigerant circulation direction.   7. The compression step according to claim 6, wherein in the compression step, the flexible tube is sandwiched between a tube guide and a pressing roller, and the blocking portion is formed by pressing the pressing roller toward the tube guide. A cooling and heating method, wherein the refrigerant is compressed by rotating in a circulating direction of the refrigerant while rotating the pressing roller.   8. The flexible pipe according to claim 6 or 7, wherein the entire pipe line through which the refrigerant is circulated is formed of a flexible tube, and the heat dissipation step is present between the end position of the compression step and the start position of the expansion step. Heat is radiated from the refrigerant through the flexible tube, and in the expansion step, the refrigerant is decompressed by passing the refrigerant through a minute gap formed by pressing the flexible tube from the outside. In the heat absorption step, the expansion step is performed. A cooling and heating method, wherein heat is absorbed through the flexible tube existing from an end position to a start position of the compression step.

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