JP2012017967A - Air conditioning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning device capable of efficiently performing cooling by natural convection or heating by heat radiation.SOLUTION: The air conditioning device is configured such that a heat exchange part 5 is formed by juxtaposing heat transmission tubes each using the tube inside as an evaporation part for a liquid phase refrigerant R or a condensation part for a gas phase refrigerant R in a refrigeration circuit, the heat exchange part 5 is disposed while being exposed to an air conditioning target zone in the longitudinal attitude and is mounted to a unit body, so that cold air produced in the heat exchange part 5 with refrigerant evaporation in the tube of the heat transmission tube is spontaneously lowered to a lower layer part of the air conditioning target zone, or heat radiation is performed from the heat radiation part 5 with refrigerant condensation in the tube of the heat transmission tube to an opposed spot in the air conditioning target zone.

Description

  The present invention relates to an air conditioner using a heat exchanger.

  There has been proposed an air conditioner that can provide a comfortable indoor environment to a room occupant without generating a forced air flow caused by blowing air from a fan or the like. In this type of air conditioner, cooling or heating is performed by natural convection or heat radiation from the heat exchanger by passing cold water or hot water through a panel-like or annular heat exchanger. As an air conditioner using such a heat exchanger, an air conditioner described in Patent Document 1 can be cited.

JP 2006-207857 A

In the air conditioner described in Patent Document 1, natural convection from a heat exchanger or indoor heating / cooling is performed by supplying cold / hot water, but considering environmental problems, more efficient natural convection and heat There is a need for an air conditioner that can generate efficient radiation and perform efficient cooling and heating.
An object of the present invention is to provide an air conditioner capable of efficiently performing natural convection and heat radiation.

The first characteristic configuration of the present invention relates to an air conditioner,
A heat exchange tube is formed in parallel by arranging the heat transfer tubes in the refrigeration circuit as the liquid phase refrigerant evaporating unit in the refrigeration circuit,
By arranging this heat exchange part in a state where it is exposed to the air-conditioning target area in a vertical posture and mounting the equipment on the air-conditioning target area, the refrigerant can evaporate in the pipe of the heat transfer tube. Along with this, the configuration is such that the cold air generated in the heat exchange section is naturally lowered to the lower part of the air-conditioning target area.

  In other words, according to this configuration, the heat transfer tube is used as the liquid phase refrigerant evaporating portion in the refrigeration circuit, and the heat transfer tube is cooled by taking the heat of vaporization accompanying the evaporation of the liquid phase refrigerant in the tube. Compared to conventional devices that simply pass cold water through the heat exchanger, the heat transfer tubes can be cooled more efficiently and at a lower temperature. This enables efficient heat exchange in the heat exchange section composed of heat transfer tubes arranged in parallel. Cold air can be generated.

  And since this heat exchange part is arranged in a state where it is exposed to the air-conditioning target area in a vertical posture, it is equipped with the apparatus body. In the form that the cool air to be generated is efficiently guided to the low-rise part of the air-conditioning area by natural descent along the vertical heat exchange part, and the cold air is accumulated from the low-rise part to the middle part of the air-conditioning target area Can be efficiently realized (that is, comfortable cooling that does not cause the residents to feel forced cooling airflow).

  In addition, since the cool air can be efficiently generated in the heat exchanging portion as described above, it is possible to further increase the cooling startability as compared with the conventional device.

The second characteristic configuration of the present invention relates to an air conditioner,
A heat exchange tube is formed in parallel by arranging the heat transfer tubes in the tube to condense the vapor phase refrigerant in the refrigeration circuit,
By arranging this heat exchange part in a state where it is exposed to the air-conditioning target area in a vertical posture, the equipment is installed in the air-conditioning target area so that the refrigerant can condense in the heat transfer tube. Along with this, heat radiation from the heat exchanging section to the opposite location in the air-conditioning target area is provided.

  That is, according to this configuration, the heat transfer tube is used as a condensing part of the gas-phase refrigerant in the refrigeration circuit, and the heat transfer tube is heated by condensation heat release accompanying the condensation of the gas-phase refrigerant in the tube. Compared with conventional devices that simply pass hot water through the heat exchanger, the heat transfer tubes can be heated more efficiently and at a higher temperature. Can be generated efficiently.

  And since this heat exchange part is arranged in a state where it is exposed to the air-conditioning target area in a vertical posture, it is equipped with the apparatus body. Heating by radiation (that is, comfortable heating that does not cause a person in the area to feel a forced warm air flow) can be efficiently performed on the opposite locations in the air-conditioning target area by the generated heat radiation.

  In addition, since the heat radiation can be efficiently generated in the heat exchanging portion as described above, it is possible to further improve the start-up property of the radiant heating as compared with the conventional device.

A third characteristic configuration of the present invention relates to an air conditioner,
While arranging the heat transfer tubes in the tube as the refrigerant flow path in the refrigeration circuit in parallel to form a heat exchange part,
The refrigeration circuit includes a cooling operation state in which the inside of the heat transfer tube is an evaporation portion of the liquid phase refrigerant in the refrigeration circuit and a heating operation state in which the inside of the heat transfer tube is a condensation portion of the gas phase refrigerant in the refrigeration circuit. Switching means for switching the refrigerant path of
By arranging the heat exchanging unit in a state in which it is exposed to the air conditioning target area in a vertical posture and installing the heat exchanger in the air conditioning target area, in the cooling operation state, in the cooling operation state, The cold air generated in the heat exchange part along with the refrigerant evaporation in the pipe is naturally lowered to the lower part of the air-conditioning target area,
In the heating operation state, heat is radiated from the heat exchanging portion to the opposite location in the air-conditioning target area as the refrigerant condenses in the heat transfer tube.

  In other words, according to this configuration, by switching the refrigerant path in the refrigeration circuit by the switching means to be in the cooling operation state, it is possible to realize the same cooling as the air conditioner having the first characteristic configuration, and by the switching means. By switching the refrigerant path in the refrigeration circuit to the heating operation state, heating similar to the air conditioner having the second characteristic configuration can be realized.

  In other words, simply by switching by means of switching means, cool and efficient cooling in the form of storing cold air from the low to middle layers of the air-conditioning target area, and comfortable and efficient radiant heating to the opposite locations in the air-conditioning target area Can be selectively realized according to the situation inside the air-conditioning target area, the experience of the people in the area, and the like.

The fourth feature configuration of the present invention is a configuration suitable for implementing any one of the first to third feature configurations,
The heat exchanger tube is arranged in parallel in a vertical tube posture to form the heat exchange part.

  That is, in the case of passing cold water or hot water through the heat transfer tube as in the conventional device, there is no great difference in cooling / heating performance regardless of whether the heat transfer tube is arranged in a vertical tube posture or a horizontal tube posture. When the refrigerant in the refrigeration circuit is phase-changed in the heat transfer tube as in the first to third feature configurations, the heat transfer tubes are arranged in parallel in the vertical tube posture as described above to form the heat exchange section, An effect can be obtained.

  That is, in the case where the heat transfer tube for changing the phase of the refrigerant in the tube is arranged in a horizontal tube posture, the cross section of the heat transfer tube is used regardless of whether the phase change is evaporation of the liquid phase refrigerant or condensation of the gas phase refrigerant. The state in which the inside of the pipe is divided into a liquid phase refrigerant accumulation area and a wet refrigerant vapor and vapor phase refrigerant filling area in the evaporation process or the condensation process continues in the longitudinal direction of the heat transfer pipe. In the tube circumferential direction, the tube wall portion in contact with the liquid-phase refrigerant accumulation region and the tube wall portion in contact with the wet refrigerant vapor and gas-phase refrigerant filling region are different in cooling state and heating state by the refrigerant. The state in which the cooling state or heating state of the tube is uneven in the direction continues in the longitudinal direction of the heat transfer tube.

  On the other hand, if the heat exchanger tubes are arranged in parallel in the vertical tube posture as described above to form the heat exchange part, the lower end part in the longitudinal direction of the pipes even if the lower end part of each heat transfer pipe becomes a reservoir for the liquid phase refrigerant The heat transfer tube can be filled only with the wet refrigerant vapor and the gas phase refrigerant in a large area other than the heat transfer tube. This ensures that the cooling and heating state of the tube is uniform in the circumferential direction of the heat transfer tube. A large length can be secured in the longitudinal direction.

  That is, this makes it possible to uniformize the generation state of cold air and heat radiation in the entire heat exchange section formed by the parallel arrangement of the heat transfer tubes, thereby adopting a method of changing the phase of the refrigerant in the tubes of the heat transfer tubes. However, it is possible to increase the uniformity of cooling or natural radiation due to natural drop of cold air.

The fifth characteristic configuration of the present invention is a configuration suitable for implementing any one of the first to fourth characteristic configurations,
A heat transfer element made of a heat conducting material extending in the longitudinal direction of the heat transfer tube is attached to the outer periphery of the heat transfer tube,
The heat transfer element includes a main body portion attached to the outer periphery of the heat transfer tube, and a plurality of heat transfer elements extending from the main body portion toward the air-conditioning target area in a parallel arrangement with an interval in the arrangement direction of the heat transfer tubes. The heat transfer plate is provided.

  In other words, according to this configuration, the heat transfer plate arranged in parallel can secure a large heat transfer area of the heat exchanging part without enlarging the size of the vessel body, so that cold air and heat radiation in the heat exchanging part can be secured. The generation efficiency can be increased, and thereby cooling by natural descent of cold air or heating by heat radiation can be realized more efficiently.

  In addition, in the case where cold air is generated in the heat exchanging section (that is, the implementation of the first and third characteristic configurations), if the above-described configuration is adopted in which the heat transfer tubes are arranged in parallel in a vertical tube posture to form the heat exchanging portion, Since the heat transfer plates arranged in parallel are also in the vertical plate posture, the cold air generated in the heat exchange section is guided downward by the gap between the heat transfer plates in the vertical plate posture by guiding with the heat transfer plates in the vertical plate posture. It is possible to smoothly drop naturally in a rectified state, and thereby to achieve better cooling in a more stable state in which the falling cold air is stored from the low-layer part to the middle-layer part of the air-conditioning target area. Can do.

The sixth characteristic configuration of the present invention is a configuration suitable for the implementation of the fifth characteristic configuration.
The plurality of front heat transfer plates extending from one surface portion of the main body portion toward the air conditioning target region, and the other heat transfer plate on the front and back surfaces of the main body portion are directed in the air conditioning target region in the opposite direction. A plurality of the heat transfer plates on the back side extending toward the main body are provided on the main body.

  In other words, according to this configuration, the front and back heat transfer plates provided on the front and back surfaces of the main body efficiently generate cold air and heat radiation on the front and back sides of the heat exchange portion, thereby Efficient cooling and heat radiation on both the front and back sides of the heat exchanging unit by the back side heat transfer plate provided on the other side of the front and back sides of the main body. Thus, cooling and heating can be performed also on the air-conditioning target area located on the other side of the heat exchange unit.

  In other words, the natural descent of cold air is performed on both the one area and the other area only by installing one container at the boundary between one area and the other area. Therefore, it is possible to efficiently perform cooling or heating by heat radiation, and in this respect, it is possible to provide an air conditioner that is more useful.

The seventh feature configuration of the present invention is a configuration suitable for the implementation of the fifth or sixth feature configuration,
The main body is a plate-shaped main body that is attached to the outer periphery of the heat transfer tube in a posture in which the arrangement direction of the heat transfer tubes is a plate width direction,
The plurality of heat transfer plates are arranged in a state extending in a parallel posture from the plate-shaped main body portion toward the air-conditioning target area.

  That is, according to this configuration, since the main body portion of the heat transfer element is a plate-like main body portion that is attached to the outer periphery of the heat transfer tube in a posture in which the arrangement direction of the heat transfer tubes is the plate width direction, A large heat transfer area of the heat exchanging part can be secured by the plate-like main body part together with the heat transfer plate, thereby improving the efficiency of generating cold air and heat radiation in the heat exchanging part more effectively. .

  In addition, since the plurality of heat transfer plates extend in a parallel posture toward the air-conditioning target area, the use of cold heat between adjacent heat transfer tubes is suppressed, and the air exchange facing the heat exchange unit It is possible to more efficiently perform cooling by natural descent of cold air or heating by heat radiation on the target area.

The eighth characteristic configuration of the present invention is a configuration suitable for the implementation of the seventh characteristic configuration.
In the plate width direction of the plate-like main body portion, the heat transfer plate having a larger separation distance from the heat transfer tube has a smaller extension dimension toward the air-conditioning target area side, and a plurality of the heat transfer plates provided in the plate-like main body portion are provided. The heat transfer distance through the plate-shaped main body from the heat transfer tube of the heat plate to the tip of the heat transfer plate is equalized.

  In other words, according to this configuration, the tip of each heat transfer plate cooled or heated by the heat transfer from the heat transfer tube by equalizing the heat transfer distance from the heat transfer tube to the tip of each heat transfer plate as described above. The temperature (in other words, the temperature of the surface of the heat exchange part represented by the envelope connecting the tips of the heat transfer plates) can be made uniform, thereby allowing cooling by natural cooling of the cold air or heating by heat radiation The uniformity can be increased.

The ninth characteristic configuration of the present invention is a configuration suitable for the implementation of the fifth or sixth characteristic configuration.
The plurality of heat transfer plates are arranged so as to extend radially from the main body portion toward the air-conditioning target area.

  According to this configuration, since the plurality of heat transfer plates extend radially toward the air conditioning target area, the opening direction with respect to the air conditioning target area of the interval between the heat transfer plates is also radial as the entire heat transfer plate group. As a result, the direction of the cold air supply to the air-conditioning target area and the direction of heat radiation can be expanded, and the air-conditioning target area is widely subjected to cooling by natural cooling of the cold air or heating by heat radiation. Can do.

The tenth characteristic configuration of the present invention is a configuration suitable for implementation of any of the first to fourth characteristic configurations,
A heat transfer element made of a heat conducting material extending in the longitudinal direction of the heat transfer tube is attached to the outer periphery of the heat transfer tube,
The heat transfer element includes a main body portion attached to the outer periphery of the heat transfer tube, and a plurality of heat transfer elements extending from the main body portion toward the air-conditioning target area in a parallel arrangement with an interval in the arrangement direction of the heat transfer tubes. And a heat transfer plate for promoting radiation extending between the ends of the plurality of heat conductive plates.

  According to this configuration, in the case of performing cooling by the natural descent of the cold air, the cool air can be efficiently generated in the space surrounded by the heat conduction plate adjacent to the main body portion and the radiation transfer heat transfer plate. , The generated cold air can be naturally lowered smoothly in a state where the generated cold air is rectified downward, and this makes cooling in a form in which the descending cold air is stored from the low to middle layers of the air-conditioning target area more efficiently. And can be realized well in a more stable state.

  In addition, in the case of heating by heat radiation, it is possible to efficiently radiate heat from the entire front side plate surface of the heat transfer plate for radiation promotion across the tips of a plurality of heat conduction plates toward the air conditioning target area. The heat radiation from the heat exchange part to the opposite part of the target area can be made efficient and uniform, and further, the space surrounded by the heat conduction plate adjacent to the main body part and the heat transfer plate for radiation promotion In this case, the rise of warm air can be promoted by the chimney effect, and by these, heating can be realized more efficiently by heat radiation and heat convection.

The eleventh characteristic configuration of the present invention is a configuration suitable for implementation of any of the fifth to tenth characteristic configurations,
The heat transfer element is composed of a plurality of divided portions, and is structured to be attached to the outer periphery of the heat transfer tube with the heat transfer tube sandwiched between the main body forming portions of the divided portions.

  That is, according to this configuration, it is easier to mount the heat transfer element on the outer periphery of the heat transfer tube than in the configuration in which the heat transfer tube is press-fitted into the insertion hole formed in the main body and the heat transfer element is mounted on the outer periphery of the heat transfer tube. Can be.

  In addition, according to this configuration, the heat transfer element can be attached to and detached from the heat transfer tube so that the heat transfer element can be easily cleaned and the mounting posture of the heat transfer element with respect to the heat transfer tube can be changed around the heat transfer tube. Thus, it is possible to easily adopt a configuration in which the extending direction of the heat transfer plate can be changed around the heat transfer tube.

The perspective view which shows schematic structure of the air conditioner which concerns on this invention The partially broken perspective view and exploded perspective view which show the heat-transfer element which concerns on 1st Embodiment Exploded cross-sectional view of the heat transfer element according to the first embodiment The partially broken perspective view and exploded perspective view which show the heat-transfer element which concerns on 2nd Embodiment Exploded cross-sectional view of a heat transfer element according to the second embodiment The partially broken perspective view and exploded perspective view which show the heat-transfer element which concerns on 3rd Embodiment Exploded cross-sectional view of a heat transfer element according to the third embodiment Cross-sectional view of a heat transfer element according to the fourth embodiment

[First Embodiment]
FIG. 1 shows an example of an air conditioner according to the present invention. The air conditioner 1 includes an indoor unit 2 installed in a room that is an air-conditioning target area and an outdoor unit 3 installed outside the room.

  The indoor unit 2 includes a body 4 and a heat exchanging unit 5, and the heat exchanging unit 5 is arranged in a state of being exposed to the room in a vertical posture and is installed in the body 4.

  The outdoor unit 3 is equipped with a main part of a refrigeration circuit that circulates the refrigerant R through the compressor, the condenser, the expansion valve, and the evaporator. The outdoor unit 3 and the indoor unit 2 are connected to the refrigerant path in the refrigeration circuit. Are connected by a refrigerant passage 6 for returning and returning the refrigerant.

  The heat exchanging unit 5 equipped in the body 4 of the indoor unit 2 has copper heat transfer tubes 7 (see FIG. 2), in which the inside of the tube is used as a flow path for the refrigerant R in the refrigeration circuit, arranged in parallel in a vertical tube posture. In this air conditioner 1, the cooling operation state in which the inside of the plurality of heat transfer tubes 7 forming the heat exchange unit 5 is the evaporation unit (that is, the evaporator) of the liquid refrigerant R in the refrigeration circuit. And the switching means which switches the refrigerant | coolant path | route of a refrigerating circuit is provided in the heating operation state which uses the inside of these heat exchanger tubes 7 as the condensation part (namely, condenser) of the gaseous-phase refrigerant | coolant R in a refrigerating circuit.

  That is, in this air conditioner 1, in the cooling operation state in the state in which the body 4 of the indoor unit 2 is installed indoors, the cool air generated in the heat exchange unit 5 as the refrigerant evaporates in the pipe of the heat transfer pipe 7 Thus, the cooling is realized in such a manner that the cold air is accumulated from the low to middle layers in the room and stored.

  Further, in the heating operation state, heat is radiated from the heat exchanging unit 5 to the opposite location in the room as the refrigerant condenses in the heat transfer pipe 7, thereby heating the indoor person by heat radiation.

  A heat transfer element 8 made of a heat conducting material (made of aluminum in this example) is mounted on the outer periphery of each heat transfer tube 7 forming the heat exchanging section 5 over almost the entire length of the heat transfer tube. As shown in FIGS. 2 and 3, the element 8 includes a main body portion 8a attached to the outer periphery of the heat transfer tube 7 and a main body portion 8a in a parallel arrangement with an interval s in the direction in which the heat transfer tubes 7 are arranged. A plurality of heat transfer plates 8b (in other words, heat absorbing / dissipating plates) extending from the inside toward the room are provided.

  That is, by mounting this heat transfer element 8 on the outer periphery of each heat transfer tube 7, a substantial heat transfer area of the heat exchanging portion 5 is ensured, and the generation efficiency of cold air and heat radiation in the heat exchanging portion 5 is ensured. It is trying to raise.

  Further, in the cooling operation, the cool air generated in the heat exchanging section 5 is naturally lowered smoothly while being rectified downward through the interval s between the heat transfer plates 8b by the guide by the heat transfer plates 8b in the vertical plate posture. It is.

  More specifically, the main body portion 8a of the heat transfer element 8 is a plate-shaped main body portion that is attached to the outer periphery of the heat transfer tube 7 in a posture in which the arrangement direction of the heat transfer tubes 7 is the plate width direction, and a plurality of heat transfer plates 8b is arranged in a state of extending in a parallel posture from the plate-like main body portion 8a toward the room, thereby improving the generation efficiency of cold air and heat radiation in the heat exchanging portion 5 more effectively and adjacently. The wasteful supply of cold / hot heat between the matching heat transfer tubes 7 is suppressed, and the room where the heat exchanging unit 5 faces is cooled by natural cooling of the cold air or heated by heat radiation more efficiently. is there.

  Further, as shown in FIG. 3 (a) or (b), the heat transfer plate 8b having a larger distance from the heat transfer tube 7 in the plate width direction of the plate-like main body portion 8a has a smaller extension to the indoor side. Thus, the heat transfer distance through the plate-like main body portion 8a from the heat transfer tubes 7 of the plurality of heat transfer plates 8b provided on the plate-like main body portion 8b to the tips of the heat transfer plates is equalized. The tip temperature of each heat transfer plate 8b that is cooled or heated by heat is made uniform so as to increase the uniformity of cooling or natural heating due to the natural drop of cold air.

  The heat transfer element 8 has a two-divided structure composed of two divided portions 8A and 8B having the same structure each having a heat transfer plate 8b, and the heat transfer tube 7 is fitted between the main body forming portions of the divided portions 8A and 8B. In this state, the heat transfer element 8 is attached to the outer periphery of the heat transfer tube 7 so that the heat transfer element 8 is attached to the outer periphery of the heat transfer tube 7. A plurality of heat transfer plates 8b on the front side extending to the main body portion 8a and a plurality of heat transfer plates 8b on the back side extending inward from the other surface portion of the main body portion 8a in the opposite direction to the front heat transfer plate 8b are formed in the main body portion 8a. The configuration is provided.

  That is, with this configuration, one indoor unit 2 is installed at the boundary between one indoor portion and the other indoor portion in the room, so that both the one indoor portion and the other indoor portion are cooled. Therefore, cooling by natural descent and heating by heat radiation can be efficiently performed.

[Second Embodiment]
4 and 5 show a second embodiment in which the heat transfer element 8 attached to the outer periphery of the heat transfer tube 7 is modified. In the heat transfer element 8 of the second embodiment, the heat transfer element shown in the first embodiment is shown. As a difference, a plurality of heat transfer plates 8b are arranged radially extending from the main body 8a toward the room.

  That is, if the heat transfer element 8 of the second embodiment is adopted, the opening direction of the space s between the heat transfer plates 8b with respect to the room becomes radial as a whole of the heat transfer plate group, thereby supplying cold air to the room. The direction of heat and the direction of heat radiation can be widened, so that cooling by the natural drop of cold air and heating by heat radiation can be widely applied to the room.

  In the air conditioner of the second embodiment, similarly to the air conditioner of the first embodiment, by installing one indoor unit 2 at the boundary between one indoor portion and the other indoor portion in the room, Both the one indoor portion and the other indoor portion can be efficiently cooled by natural cooling of the cold air or heated by heat radiation.

[Third Embodiment]
6 and 7 show a third embodiment in which the heat transfer element 8 mounted on the outer periphery of the heat transfer tube 7 is modified. In the heat transfer element 8 of the third embodiment, the heat transfer element shown in the first embodiment is shown. As a difference from the main body portion 8a in a parallel arrangement with a space s' in the arrangement direction of the heat transfer tubes 7 instead of providing the heat transfer plate 8b in a state of forming a gap s opening toward the room. And a plurality of heat conducting plates 8c extending toward the top, and an arc-shaped radiation promoting heat transfer plate 8d extending between the tips of the plurality of heat conducting plates 8c.

  In other words, when the heat transfer element 8 of the third embodiment is employed, when cooling is performed by the natural drop of cold air, the heat transfer plate 8c adjacent to the main body 8a and the heat transfer plate 8d for radiation promotion are surrounded. In the space s ′ (in other words, the space formed by the space between the adjacent heat conducting plates 8c), the cool air can be efficiently generated and the generated cool air is rectified downward through the space. It can be smoothly lowered naturally.

  In addition, in the case of performing heating by heat radiation, it is possible to efficiently radiate heat from the entire front side plate surface of the radiation promoting heat transfer plate 8d across the tips of the plurality of heat conduction plates 8c toward the room, The heat radiation from the heat exchanging portion 5 to the opposite location in the room can be made efficient and uniform, and further surrounded by the heat conducting plate 8c adjacent to the main body portion 8a and the heat transfer plate 8d for radiation promotion. In the space s ′, the rise of warm air can be promoted by the chimney effect, and by these, heating can be realized more efficiently with heat radiation and heat convection.

  The radiation-accelerating heat transfer plate 8d is not limited to an arc-shaped cross section, and may be a straight or meandering cross section.

  In the air conditioner having the third characteristic configuration, similarly to the air conditioners of the first and second embodiments, one indoor unit 2 is installed at the boundary between one indoor portion and the other indoor portion in the room. Thus, both the one indoor portion and the other indoor portion can be efficiently cooled by natural cooling of the cold air or heated by heat radiation.

[Fourth Embodiment]
FIG. 8 shows a modified fourth embodiment of the heat transfer element 8. In the first to third embodiments described above, an example in which the heat transfer element 8 is divided into two parts is shown. In the form, as shown in FIGS. 8A and 8B, in the heat transfer element 8 having an integrated structure, a plurality of front heat transfer plates 8b extending from the front and back surfaces of the main body portion 8a toward the room; The main body portion 8a is provided with a plurality of back-side heat transfer plates 8b extending inward from the other surface portion of the main body portion 8a in the opposite direction to the front-side heat transfer plate.

  The heat transfer element 8 is attached to the outer periphery of the heat transfer tube 7 by press-fitting the heat transfer tube 7 into the insertion hole 8e formed in the main body 8a of the heat transfer element 8.

  Others are the same as those in the second and third embodiments.

  In addition to the heat transfer element 8 shown in FIGS. 8A and 8B, the same integrated structure may be adopted for the heat transfer element 8 of the first embodiment shown in FIG.

[Another embodiment]
Next, other embodiments are listed.

  In each of the above-described embodiments, an example in which the heat exchanging unit 5 provided in the container body 4 is exposed in a room in a vertical posture by the parallel arrangement of the heat transfer tubes 7 in the vertical tube posture is shown. You may make it form the heat exchange part 5 by arrange | positioning the heat exchanger tube 7 of a horizontal pipe attitude | position or an oblique pipe attitude | position in parallel.

  The container 4 equipped in a state where the heat exchanging unit 5 is exposed to the room in a vertical posture is not limited to a floor-standing type, but may be a wall-mounted or ceiling-suspended type.

  The structure of the container 4 is not limited to the structure shown in the above embodiment, and various structural changes can be made in the practice of the present invention.

  The heat transfer element 8 attached to the outer periphery of the heat transfer tube 7 is not limited to the structure shown in the above-described embodiments, and various structural changes can be made in the practice of the present invention. For example, the heat transfer element 8 is attached to the heat transfer tube 7. A configuration may be adopted in which a plurality of heat transfer plates 8b or a plurality of heat transfer plates 8c and a radiation transfer heat transfer plate 8d extending between their tips are provided only on one side of the main body 8a.

  In addition, the heat transfer element 8 is not limited to the outer periphery of the heat transfer tube 7, and a heat transfer portion may be integrally formed on the surface of the heat transfer tube 7, or the heat transfer tube 7 without the heat transfer element 8 mounted. You may make it form the heat exchange part 5 by parallel arrangement | positioning.

  The air-conditioning target area to be cooled and heated by the air-conditioning apparatus of the present invention is not limited to a general living room, but for any use such as a manufacturing room, a factory, a medical room, a cold storage or an indoor space used for cultivation of vegetables, etc. There may be.

  The air conditioner according to the present invention can be used for cooling or heating an air-conditioning target area for various uses in various fields, and is particularly suitable for cooling or heating an air-conditioning target area where a forced air flow by a fan is not desirable. It is.

R Refrigerant 7 Heat transfer tube 5 Heat exchange part 4 Body 8 Heat transfer element 8a Body part s, s' Interval 8b Heat transfer plate 8c Heat conduction plate 8d Radiation promotion heat transfer plate 8A, 8B Dividing part

Claims (11)

A heat exchange tube is formed in parallel by arranging the heat transfer tubes in the refrigeration circuit as the liquid phase refrigerant evaporating unit in the refrigeration circuit,
By arranging this heat exchange part in a state where it is exposed to the air-conditioning target area in a vertical posture and mounting the equipment on the air-conditioning target area, the refrigerant can evaporate in the pipe of the heat transfer tube. Accordingly, an air conditioner configured to naturally drop the cold air generated in the heat exchange unit to a lower layer of the air conditioning target area. A heat exchange tube is formed in parallel by arranging the heat transfer tubes in the tube to condense the vapor phase refrigerant in the refrigeration circuit,
By arranging this heat exchange part in a state where it is exposed to the air-conditioning target area in a vertical posture, the equipment is installed in the air-conditioning target area so that the refrigerant can condense in the heat transfer tube. Accordingly, an air conditioner configured to radiate heat from the heat exchanging unit to an opposite location in the air conditioning target area. While arranging the heat transfer tubes in the tube as the refrigerant flow path in the refrigeration circuit in parallel to form a heat exchange part,
The refrigeration circuit includes a cooling operation state in which the inside of the heat transfer tube is an evaporation portion of the liquid phase refrigerant in the refrigeration circuit and a heating operation state in which the inside of the heat transfer tube is a condensation portion of the gas phase refrigerant in the refrigeration circuit. Switching means for switching the refrigerant path of
By arranging the heat exchanging unit in a state in which it is exposed to the air conditioning target area in a vertical posture and installing the heat exchanger in the air conditioning target area, in the cooling operation state, in the cooling operation state, The cold air generated in the heat exchange part along with the refrigerant evaporation in the pipe is naturally lowered to the lower part of the air-conditioning target area,
In the heating operation state, an air conditioner configured to radiate heat from the heat exchanging portion to an opposite location in an air-conditioning target area as the refrigerant condenses in the heat transfer tube.   The air conditioner according to any one of claims 1 to 3, wherein the heat exchange section is formed by arranging the heat transfer tubes in parallel in a vertical tube posture. A heat transfer element made of a heat conducting material extending in the longitudinal direction of the heat transfer tube is attached to the outer periphery of the heat transfer tube,
The heat transfer element includes a main body portion attached to the outer periphery of the heat transfer tube, and a plurality of heat transfer elements extending from the main body portion toward the air-conditioning target area in a parallel arrangement with an interval in the arrangement direction of the heat transfer tubes. The air conditioning apparatus according to any one of claims 1 to 4, wherein a heat transfer plate is provided.   The plurality of front heat transfer plates extending from one surface portion of the main body portion toward the air conditioning target region, and the other heat transfer plate on the front and back surfaces of the main body portion are directed in the air conditioning target region in the opposite direction. The air conditioner according to claim 5, wherein a plurality of the heat transfer plates on the back side extending toward the main body are provided on the main body. The main body is a plate-shaped main body that is attached to the outer periphery of the heat transfer tube in a posture in which the arrangement direction of the heat transfer tubes is a plate width direction,
The air conditioner according to claim 5 or 6, wherein the plurality of heat transfer plates are arranged in a state extending in a parallel posture from the plate-shaped main body portion toward an air-conditioning target area.   In the plate width direction of the plate-like main body portion, the heat transfer plate having a larger separation distance from the heat transfer tube has a smaller extension dimension toward the air-conditioning target area side, and a plurality of the heat transfer plates provided in the plate-like main body portion are provided. The air conditioner according to claim 7, wherein a heat transfer distance through the plate-like main body portion from the heat transfer tube of the heat plate to the tip of the heat transfer plate is equalized.   The air conditioner according to claim 5 or 6, wherein the plurality of heat transfer plates are arranged so as to extend radially from the main body portion toward the air conditioning target area. A heat transfer element made of a heat conducting material extending in the longitudinal direction of the heat transfer tube is attached to the outer periphery of the heat transfer tube,
The heat transfer element includes a main body portion attached to the outer periphery of the heat transfer tube, and a plurality of heat transfer elements extending from the main body portion toward the air-conditioning target area in a parallel arrangement with an interval in the arrangement direction of the heat transfer tubes. The air conditioner according to any one of claims 1 to 4, further comprising a heat conduction plate and a heat transfer plate for promoting radiation extending between the tips of the plurality of heat conduction plates.   The heat transfer element includes a plurality of divided portions, and is configured to be attached to the outer periphery of the heat transfer tube in a state where the heat transfer tube is sandwiched between main body forming portions of the divided portions. The air conditioner according to any one of claims.

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