JP2009109141A - Air conditioner - Google Patents

Abstract

An air conditioner capable of quickly performing partial heating.
An air conditioner includes a first refrigerant circuit that connects an outdoor unit and an indoor unit. The first refrigerant circuit 11 is provided with a compressor 21. The discharge pipe A of the compressor 21 is composed of an electromagnetic induction heat generating portion Q containing a magnetic material. A work coil 70 is wound around the electromagnetic induction heat generating portion Q of the discharge pipe A. A high frequency power supply 60 is connected to the work coil 70 and can supply a high frequency current. When a high-frequency current is supplied to the work coil 70, countless lines of magnetic force are generated around the work coil, an eddy current is generated in the electromagnetic induction heat generating portion Q of the discharge pipe A, and the electromagnetic induction heat generating portion Q generates heat.
[Selection] Figure 1

Description

  The present invention relates to an air conditioner.

In recent years, for example, an air conditioner described in Patent Document 1 shown below, which heats a refrigerant pipe composed of a hollow cylinder and a helical heater wire built in the cylinder, Proposed. This heater wire is composed of nichrome wire, semiconductor ceramics, etc., and when energized, the nichrome wire itself generates heat due to the electrical resistance of the nichrome wire, and the cylinder is heated to heat the refrigerant flowing through the cylinder. ing.
JP-A-5-223194

  However, in the resistance heating type heater described in Patent Document 1, since the contact area between the heater wire and the refrigerant is small, heat conduction efficiency is poor, and it may be difficult to perform rapid and sufficient heating.

  This invention is made | formed in view of the point mentioned above, The subject of this invention is providing the air conditioning apparatus which can perform partial heating rapidly.

  An air conditioner according to a first aspect of the present invention includes an electromagnetic induction coil, a high-frequency power source that supplies a high-frequency current to the electromagnetic induction coil, and a heating element that is located near the electromagnetic induction coil and generates heat by electromagnetic induction. ing.

  Here, a high-frequency current is supplied from a high-frequency power source to the electromagnetic induction coil, and electromagnetic induction is generated in a heating element located in the vicinity of the electromagnetic induction coil. For this reason, a heat generating body can be heated rapidly.

  Thereby, partial heating can be performed quickly.

  An air conditioner according to a second aspect is the air conditioner according to the first aspect, wherein the heating element is a refrigerant circuit pipe, a drain pan, a heat exchanger, a fan, a duct, a suction grill, a blowing air direction change plate, and a humidifying device. At least one of the air conditioner components.

  Here, at least one of the air conditioner components of the refrigerant circuit piping, drain pan, heat exchanger, fan, duct, suction grille, blowing air direction change plate, and humidifier is configured as a heating element. It becomes possible to quickly heat the air conditioner components.

  An air conditioner according to a third aspect of the present invention is the air conditioner of the first aspect, wherein the heating element is an air conditioner-accompanying part disposed inside the duct.

  Here, by arranging an air conditioning accessory that generates heat by electromagnetic induction inside the duct, it is possible to heat the air passing through the duct.

  An air conditioner according to a fourth aspect of the present invention is the air conditioner according to the first aspect of the present invention, a suction port that sucks in air in the target space, a blowout port that blows out air sucked through the suction port, and a suction port And an air conditioning indoor unit having a heat exchanger that exchanges heat with the air that has been sucked in through the mouth and before reaching the outlet. And a heat generating body is an indoor unit incidental part arrange | positioned in the position through which the air before reaching the rear blower outlet sucked in via the suction inlet passes.

  Here, by arranging the indoor unit accompanying parts that are heating elements at the position where the air before reaching the outlet after passing through the suction port passes, not only the heat exchanger but also the indoor unit accompanying parts It becomes possible to adjust the temperature of the air.

  An air conditioner according to a fifth aspect of the present invention is the air conditioner according to any one of the first to fourth aspects of the present invention, further comprising a refrigerant circuit having a refrigerant pipe for circulating a carbon dioxide refrigerant. And the refrigerant | coolant piping contains the heat generating body in at least one part.

  Here, in the refrigerant circuit in which the carbon dioxide refrigerant flows through the refrigerant pipe, the refrigerant pipe includes a heating element, so that the refrigerant temperature can be increased with energy saving by the expansion process and the compression stroke. The refrigerant whose temperature is increased here is easily cooled by the ambient temperature, but the refrigerant in the high temperature state is supplied with heat from the heating element while being transported to the target location where heat is released, so that the refrigerant at the time of transporting the refrigerant can be obtained. It is possible to reduce the refrigerant temperature drop due to the influence of the ambient temperature.

  As a result, it is possible to heat the target portion while suppressing the temperature drop of the refrigerant whose temperature has been increased by energy saving.

  An air conditioner according to a sixth aspect of the present invention includes an electromagnetic induction coil, a high-frequency power source that supplies a high-frequency current to the electromagnetic induction coil, and a magnetic body portion that is located near the electromagnetic induction coil and includes a magnetic material. I have.

  Here, a high-frequency current is supplied from a high-frequency power source to the electromagnetic induction coil, and an eddy current is generated by electromagnetic induction generated between the magnetic induction coil and the magnetic body portion located in the vicinity of the electromagnetic induction coil. For this reason, a magnetic body part can be heated rapidly.

  Thereby, partial heating can be performed quickly.

  An air conditioner according to a seventh aspect of the present invention is the air conditioner according to the sixth aspect of the present invention, wherein the magnetic part includes a refrigerant circuit pipe, a drain pan, a heat exchanger, a fan, a duct, a suction grill, a blown air direction change plate, and a humidifier. It is an air conditioner component of at least one of the devices.

  Here, at least any one of the air conditioner components among the refrigerant circuit piping, the drain pan, the heat exchanger, the fan, the duct, the suction grille, the blowing air direction changing plate, and the humidifier is configured as a magnetic body. It becomes possible to quickly heat the air conditioner components.

  An air conditioner according to an eighth aspect of the present invention is the air conditioner according to the sixth aspect of the present invention, wherein the magnetic part is an air conditioner-accompanying part disposed inside the duct.

  Here, by arranging an air conditioning accessory that generates heat by electromagnetic induction inside the duct, it is possible to heat the air passing through the duct.

  An air conditioner according to a ninth aspect of the present invention is the air conditioner according to the sixth aspect of the present invention, comprising a suction port that sucks air in the target space, a blowout port that blows out the air sucked through the suction port, and a suction port. And an air conditioning indoor unit having a heat exchanger that exchanges heat with the air that has been sucked in through the mouth and before reaching the outlet. And a magnetic body part is an indoor unit incidental part arrange | positioned in the position through which the air before reaching the rear blower outlet sucked in via the suction inlet passes.

  Here, by placing the indoor unit accessory part, which is a magnetic part, at a position where the air before reaching the rear outlet through the suction port passes, not only by the heat exchanger but also by the indoor unit accessory part It will also be possible to adjust the air temperature.

  An air conditioner according to a tenth aspect of the present invention is the air conditioner according to any one of the sixth aspect to the ninth aspect of the present invention, further comprising a refrigerant circuit having a refrigerant pipe for circulating a carbon dioxide refrigerant. And the refrigerant | coolant piping contains the magnetic body part in at least one part.

  Here, in the refrigerant circuit in which the carbon dioxide refrigerant flows through the refrigerant pipe, the refrigerant pipe includes the magnetic body portion. Therefore, the refrigerant temperature can be increased with energy saving by the expansion process and the compression stroke. The refrigerant whose temperature is increased here is easily cooled by the ambient temperature, but the refrigerant in the high temperature state is supplied with heat from the heating element while being transported to the target location where heat is released, so that the refrigerant at the time of transporting the refrigerant can be obtained. It is possible to reduce the refrigerant temperature drop due to the influence of the ambient temperature.

  As a result, it is possible to heat the target portion while suppressing the temperature drop of the refrigerant whose temperature has been increased by energy saving.

  In the air conditioning apparatus according to the first aspect, partial heating can be performed quickly.

  In the air conditioner according to the second aspect of the invention, the air conditioner component can be quickly heated.

  In the air conditioning apparatus according to the third aspect of the invention, it is possible to heat the air passing through the duct.

  In the air conditioner according to the fourth aspect of the present invention, the temperature of the air can be adjusted not only by the heat exchanger but also by the components associated with the indoor unit.

  In the air conditioner according to the fifth aspect of the present invention, it is possible to heat the target portion while suppressing the temperature decrease of the refrigerant whose temperature has been increased by energy saving.

  In the air conditioner according to the sixth aspect of the present invention, partial heating can be performed quickly.

  In the air conditioner according to the seventh aspect of the invention, the air conditioner component can be quickly heated.

  In the air conditioning apparatus according to the eighth aspect of the invention, it is possible to heat the air that passes through the duct.

  In the air conditioner according to the ninth aspect of the present invention, the temperature of the air can be adjusted not only by the heat exchanger but also by the indoor unit accompanying parts.

  In the air conditioner device according to the tenth aspect of the present invention, it is possible to heat the target portion while suppressing the temperature decrease of the refrigerant whose temperature has been increased by energy saving.

<Outline of the Invention>
The present invention provides an air conditioner capable of electromagnetically heating a part of the apparatus.

  In the air conditioner of the present invention, a work coil is wound around a refrigerant pipe serving as an electromagnetic induction heat generating section, and the refrigerant pipe is heated by electromagnetic induction to heat the refrigerant, or as an electromagnetic induction heat generating section that comes into contact with air These members are heated by electromagnetic induction to heat the conditioned air.

<Common items of each embodiment>
Hereinafter, examples of an air conditioner according to an embodiment of the present invention are shown in each embodiment. For example, as shown in FIGS. 1 and 2, the electromagnetic induction heating unit Q, the work coil 70, and a high-frequency power source About 60, since it is generally common in each embodiment and modification, it shall be demonstrated collectively.

(Electromagnetic induction heating part Q)
The electromagnetic induction heat generating part Q has a different position in the air conditioner for each embodiment and modification. However, in any of the embodiments and modifications, the electromagnetic induction material used in the electromagnetic induction heat generating part Q is as follows. For example, iron, copper, aluminum, chromium, nickel, and an alloy containing at least two kinds of metals selected from these groups can be used. In addition, SUS (stainless steel) is included in the electromagnetic induction material of the electromagnetic induction heat generating portion Q. Examples of the SUS include three types of ferrite, martensite, and austenite, and combinations of these types. As the electromagnetic induction material employed in these electromagnetic induction heat generating portions Q, those containing a magnetic material are also preferable.

  And this electromagnetic induction heat generating part Q produces | generates an electromagnetic induction by the electric power from the high frequency power supply 60 being supplied with respect to the work coil 70 mentioned later, and an electromagnetic induction heat generating part Q's own by generating an eddy current. Heat is generated from the resistance portion.

(Work coil 70)
The work coil 70 has a shape spirally wound in a substantially concentric relationship so that a plurality of lines of magnetic force are generated in a predetermined direction when electric power is supplied from the high-frequency power source 60. The work coil 70 is wound around the electromagnetic induction heat generating portion Q, or is disposed in the vicinity of the electromagnetic induction heat generating portion Q so that the plurality of magnetic lines of force can pass in the vicinity of the electromagnetic induction heat generating portion Q. The work coil 70 is connected to the high-frequency power supply 60 by extending two connection wirings 71 for input and output from the location near the electromagnetic induction heating portion Q to the high-frequency power supply 60. Can receive power supply. For the work coil 70 and the connection wiring 71, for example, a conductor such as a copper wire is employed.

(High frequency power supply 60)
The high frequency power supply 60 supplies high frequency power to the work coil 70 via the connection wiring 71 as described above.

  Hereinafter, specific modes of the electromagnetic induction heat generating portion Q, the work coil 70, and the high frequency power supply 60 employed in each embodiment will be described.

<First Embodiment>
In the air conditioner 1 of the first embodiment, as shown in FIG. 1, a first refrigerant circuit 11 configured by connecting an outdoor unit 2 and an indoor unit 4 with a liquid refrigerant communication pipe 6 and a gas refrigerant communication pipe 7. It has. Each refrigerant pipe of the first refrigerant circuit 11 is made of a magnetic material containing iron.

  The first refrigerant circuit 11 includes a compressor 21, a four-way switching valve 22, an outdoor heat exchanger 23, an outdoor electric expansion valve 24, an accumulator 25, and the like disposed inside the outdoor unit 2. The first refrigerant circuit 11 includes an indoor heat exchanger 41 and the like inside the indoor unit 4. In addition, the four-way selector valve 22 has shown the switching connection state in the case of performing heating operation in FIG.

  Here, the refrigerant flowing through the first refrigerant circuit 11 is a carbon dioxide refrigerant.

  As shown in FIG. 1, the first refrigerant circuit 11 includes a discharge pipe A, an indoor gas pipe B, an indoor liquid pipe C, an outdoor liquid pipe D, an outdoor gas pipe E, an accumulator pipe F, and an intake pipe G. Have.

  Hereinafter, the connection state of each refrigerant pipe will be described in the order of the flow path where the refrigerant discharged from the compressor 21 flows out and is sucked into the compressor 21 again.

  The discharge pipe A connects the discharge side of the compressor 21 and the four-way switching valve 22.

  The indoor side gas pipe B connects the four-way switching valve 22 and the gas side of the indoor heat exchanger 41.

  The indoor side liquid pipe C connects the liquid side of the indoor heat exchanger 41 and the outdoor electronic expansion valve 24. Here, the indoor side liquid pipe C includes a liquid communication pipe 6 that connects the outdoor unit 2 and the indoor unit 4.

  The outdoor liquid pipe D connects the outdoor electronic expansion valve 24 and the liquid side of the outdoor heat exchanger 23.

  The outdoor gas pipe E connects the gas side of the outdoor heat exchanger 23 and the four-way switching valve 22.

  The accumulator pipe F connects the four-way switching valve 22 and the accumulator 25.

  The suction pipe G connects the accumulator 25 and the suction side of the compressor 21.

  Thus, the 1st refrigerant circuit 11 is constituted, and a heating operation can be performed because a refrigerant circulates and flows in the direction mentioned above. The cooling operation can also be performed by switching the connection state of the four-way switching valve 22.

(Discharge pipe heating)
Here, the electromagnetic induction heat generating portion Q is provided in the middle of the discharge pipe A connecting the discharge side of the compressor 21 and the four-way switching valve 22. The work coil 70 is wound around the electromagnetic induction heat generating portion Q of the discharge pipe A, and is connected to the high frequency power supply 60 by a connection wiring 71.

  As shown in FIG. 2, here, a resin bobbin 72 is formed between the discharge pipe A and the work coil 70 so that both ends protrude on the circumference in order to prevent the winding position from shifting. is doing. The bobbin 72 covers the periphery of the electromagnetic induction heat generating portion Q of the discharge pipe A, and the work coil 70 is wound around the bobbin 72 several times.

  As a result, the work coil 70 that receives the supply of high-frequency power from the high-frequency power source 60 generates innumerable lines of magnetic force in the vicinity of the electromagnetic induction heat generating portion Q of the discharge pipe A, and can heat the electromagnetic induction heat generating portion Q by electromagnetic induction. .

  Here, the electromagnetic induction heat generating part Q may be configured to be the entire discharge pipe A, or may be formed only on the inner surface or the outer surface of the discharge pipe A, for example. A configuration in which the electromagnetic induction heat generating portion Q is included in the tube A may be employed.

(Characteristic)
Here, by heating the gas refrigerant discharged from the compressor 21 by the electromagnetic induction heat generating part Q, it is possible to improve the heating capacity while suppressing a decrease in the refrigerant temperature.

  Further, at the time of starting the heating operation, the compressor 21 may not be sufficiently warmed, but here, the electromagnetic induction heat generating part Q generates heat, so that the discharged gas refrigerant can be heated, It can compensate for the lack of ability at startup.

  Furthermore, when the defrost operation which removes the frost adhering to the outdoor heat exchanger 23 is performed by switching the four-way switching valve 22 to the cooling operation state, the outdoor heat exchanger 23 is removed to remove the frost. The hot gas to be sent can be further heated by the heat generated by the electromagnetic induction heating part Q. Thereby, the time required to thaw frost by defrost operation can be shortened. Thereby, even if it is necessary to perform a defrost operation in a timely manner during the heating operation, the operation can be returned to the heating operation as soon as possible, and the user's comfort can be improved.

  In addition, since the carbon dioxide refrigerant is used as the refrigerant, the refrigerant temperature is greatly reduced by expansion in the outdoor electronic expansion valve 24 as compared with the case where the HFC refrigerant is used. Therefore, in the outdoor heat exchanger 23 High-efficiency heat exchange can be performed, and further, the high-temperature gas refrigerant can be produced with energy saving by being compressed by the compressor 21. The discharged gas refrigerant having a high temperature is easily cooled by the ambient temperature. However, the discharged gas refrigerant having a high temperature is transferred from the electromagnetic induction heat generating portion Q on the way to the indoor heat exchanger 41 that releases heat. By receiving the supply of heat, it is possible to reduce a decrease in the refrigerant temperature due to the influence of the ambient temperature when the refrigerant is transported. Thereby, the heating operation using the gas refrigerant in a high temperature state is possible due to energy saving, and the heating efficiency can be improved.

<Modification of First Embodiment>
(A)
As shown in FIG. 3, the air conditioner 1 includes an electromagnetic induction heat generating portion Q in the first refrigerant circuit 11, the indoor side connecting the four-way switching valve 22 and the gas side of the indoor heat exchanger 41. It may be a part of the gas pipe B. Even in this case, the work coil 70 is wound around the electromagnetic induction heat generating portion Q of the indoor side gas pipe B, the connection wiring 71 and the high frequency power supply 60 are connected, and high frequency power is supplied to the work coil 70. By performing the above, it is possible to generate innumerable lines of magnetic force around the electromagnetic induction heat generating portion Q and to heat the electromagnetic induction heat generating portion Q.

  Thereby, the gas refrigerant which goes to the gas side entrance of the indoor heat exchanger 41 from the four-way switching valve 22 can be warmed, and the heating capacity can be improved.

  In addition, when the heating operation is started, the compressor 21 may not be sufficiently warmed, but here, the electromagnetic induction heat generating part Q generates heat, so that the indoor heat exchanger from the four-way switching valve 22 is heated. The gas refrigerant heading to the gas side inlet 41 can be heated, and the lack of capacity at startup can be compensated.

  In addition, when the four-way switching valve 22 is switched to the cooling operation state and the defrost operation is performed to remove the frost attached to the outdoor heat exchanger 23, it passes through the electromagnetic induction heating part Q of the indoor gas pipe B. Since the gas refrigerant warmed in this way can be further compressed by the compressor 21, the temperature of the hot gas discharged from the compressor 21 can be raised. Thereby, the time required to thaw frost by defrost operation can be shortened. Thereby, even if it is necessary to perform a defrost operation in a timely manner during the heating operation, the operation can be returned to the heating operation as soon as possible, and the user's comfort can be improved.

(B)
As shown in FIG. 4, the air conditioner 1 includes an electromagnetic induction heat generating portion Q in the first refrigerant circuit 11 that is connected to the gas side of the outdoor heat exchanger 23 and the four-way switching valve 22. It may be a part of the gas pipe E. Even in this case, the work coil 70 is wound around the electromagnetic induction heat generating portion Q of the outdoor gas pipe E, the connection wiring 71 and the high-frequency power source 60 are connected, and the work coil 70 is supplied with high-frequency power. By performing the above, it is possible to generate innumerable lines of magnetic force around the electromagnetic induction heat generating portion Q and to heat the electromagnetic induction heat generating portion Q.

  Thereby, the suction gas refrigerant heading from the gas side of the outdoor heat exchanger 23 toward the four-way switching valve 22 can be warmed, and the heating capacity can be improved.

  Further, at the time of starting the heating operation, the compressor 21 may not be sufficiently warmed, but here, the electromagnetic induction heat generating part Q generates heat, so that the four sides from the gas side of the outdoor heat exchanger 23 are heated. The gas refrigerant directed to the path switching valve 22 can be heated, and the lack of capacity at the time of startup can be compensated.

  Further, when the four-way switching valve 22 is switched to the cooling operation state and the defrost operation is performed to remove frost attached to the outdoor heat exchanger 23, the gas refrigerant discharged from the compressor 21 is the outdoor gas. Since it passes through the electromagnetic induction heat generating part Q of the pipe E, the hot gas sent to the outdoor heat exchanger 23 for removing frost can be further increased by the heat generated by the electromagnetic induction heat generating part Q. Thereby, the time required to thaw frost by defrost operation can be shortened. Thereby, even if it is necessary to perform a defrost operation in a timely manner during the heating operation, the operation can be returned to the heating operation as soon as possible, and the user's comfort can be improved.

(C)
As shown in FIG. 5, the air conditioner 1 may be configured such that, in the first refrigerant circuit 11, the electromagnetic induction heat generating part Q is a part of an accumulator pipe F that connects the four-way switching valve 22 and the accumulator 25. . Even in this case, the work coil 70 is wound around the electromagnetic induction heat generating portion Q of the accumulator tube F, the connection wiring 71 and the high frequency power supply 60 are connected, and high frequency power is supplied to the work coil 70. By doing so, innumerable lines of magnetic force can be generated around the electromagnetic induction heating part Q, and the electromagnetic induction heating part Q can be heated.

  Thereby, the suction gas refrigerant heading from the four-way switching valve 22 toward the accumulator 25 can be warmed, and the heating capacity can be improved.

  Further, at the time of starting the heating operation, the compressor 21 may not be sufficiently warmed, but here, the electromagnetic induction heat generating portion Q generates heat, so that the four-way switching valve 22 moves toward the accumulator 25. The gas refrigerant can be heated, and the lack of capacity at the start-up can be compensated.

  Furthermore, when performing the defrost operation which switches the four-way switching valve 22 to the state for cooling operation and removes the frost adhering to the outdoor heat exchanger 23, it passes through the electromagnetic induction heating part Q of the accumulator tube F. Since the warmed gas refrigerant can be further compressed by the compressor 21, the temperature of the hot gas discharged from the compressor 21 can be increased. Thereby, the time required to thaw frost by defrost operation can be shortened. Thereby, even if it is necessary to perform a defrost operation in a timely manner during the heating operation, the operation can be returned to the heating operation as soon as possible, and the user's comfort can be improved.

(D)
As shown in FIG. 6, the air conditioner 1 includes the electromagnetic induction heat generating portion Q in the first refrigerant circuit 11 as a portion of the suction pipe G that connects the accumulator 25 and the suction side of the compressor 21. Good. Even in this case, the work coil 70 is wound around the electromagnetic induction heat generating portion Q of the suction pipe G, the connection wiring 71 and the high frequency power supply 60 are connected, and high frequency power is supplied to the work coil 70. By doing so, innumerable lines of magnetic force can be generated around the electromagnetic induction heating part Q, and the electromagnetic induction heating part Q can be heated.

  Thereby, the suction gas refrigerant heading from the accumulator 25 toward the suction side of the compressor 21 can be warmed, and the heating capacity can be improved.

  In addition, when the heating operation is started, the compressor 21 may not be sufficiently warmed. However, here, the electromagnetic induction heat generating portion Q generates heat, so that the accumulator 25 is moved to the suction side of the compressor 21. The gas refrigerant which heads can be heated, and the lack of capacity at the start-up can be compensated.

  Further, when the defrost operation for removing the frost attached to the outdoor heat exchanger 23 is performed by switching the four-way switching valve 22 to the cooling operation state, it passes through the electromagnetic induction heating part Q of the suction pipe G. Since the warmed gas refrigerant can be further compressed by the compressor 21, the temperature of the hot gas discharged from the compressor 21 can be increased. Thereby, the time required to thaw frost by defrost operation can be shortened. Thereby, even if it is necessary to perform a defrost operation in a timely manner during the heating operation, the operation can be returned to the heating operation as soon as possible, and the user's comfort can be improved.

(E)
As shown in FIG. 7, the air conditioner 1 includes an electromagnetic induction heating unit Q in the first refrigerant circuit 11, the indoor side connecting the four-way switching valve 22 and the gas side of the indoor heat exchanger 41. While being a part of the gas pipe B, the electromagnetic induction heat generating part Q, the work coil 70, and the high frequency power source 60 are covered with one casing so as to be disposed between the outdoor unit 2 and the indoor unit 4 as the refrigerant heating unit 81. It may be unitized. Even in this case, the work coil 70 is wound around the electromagnetic induction heat generating portion Q of the indoor side gas pipe B, the connection wiring 71 and the high frequency power supply 60 are connected, and high frequency power is supplied to the work coil 70. By performing the above, it is possible to generate innumerable lines of magnetic force around the electromagnetic induction heat generating portion Q and to heat the electromagnetic induction heat generating portion Q.

  Thereby, the gas refrigerant which goes to the gas side entrance of the indoor heat exchanger 41 from the four-way switching valve 22 can be warmed, and the heating capacity can be improved.

  In addition, when the heating operation is started, the compressor 21 may not be sufficiently warmed, but here, the electromagnetic induction heat generating part Q generates heat, so that the indoor heat exchanger from the four-way switching valve 22 is heated. The gas refrigerant heading to the gas side inlet 41 can be heated, and the lack of capacity at startup can be compensated.

  In addition, when the four-way switching valve 22 is switched to the cooling operation state and the defrost operation is performed to remove the frost attached to the outdoor heat exchanger 23, it passes through the electromagnetic induction heating part Q of the indoor gas pipe B. Since the gas refrigerant warmed in this way can be further compressed by the compressor 21, the temperature of the hot gas discharged from the compressor 21 can be raised. Thereby, the time required to thaw frost by defrost operation can be shortened. Thereby, even if it is necessary to perform a defrost operation in a timely manner during the heating operation, the operation can be returned to the heating operation as soon as possible, and the user's comfort can be improved.

  Furthermore, since the refrigerant heating unit 81 is unitized, after the outdoor unit 2 and the indoor unit 4 are connected via the liquid refrigerant communication pipe 6 and the gas refrigerant communication pipe 7, a refrigerant circuit is completed. In addition, the refrigerant heating unit 81 can be easily retrofitted to the existing air conditioner.

Second Embodiment
In the air conditioning apparatus 201 of the second embodiment, as shown in FIG. 8, the second refrigerant circuit 12 configured by connecting the outdoor unit 2 and the indoor unit 4 with a liquid refrigerant communication pipe 6 and a gas refrigerant communication pipe 7. It has. Each refrigerant pipe of the second refrigerant circuit 12 is made of a magnetic material containing iron.

  The second refrigerant circuit 12 includes a compressor 21, a four-way switching valve 22, an outdoor heat exchanger 23, an outdoor electric expansion valve 24, an accumulator 25, a gas-liquid separator 226, and the like disposed inside the outdoor unit 2. Yes. The second refrigerant circuit 12 includes an indoor heat exchanger 41 and the like inside the indoor unit 4. In addition, the four-way switching valve 22 has shown the switching connection state in the case of performing heating operation in FIG.

  Here, the refrigerant flowing through the second refrigerant circuit 12 is a carbon dioxide refrigerant.

  As shown in FIG. 8, the second refrigerant circuit 12 includes a discharge pipe A, an indoor gas pipe B, an indoor liquid pipe C, a gas-liquid separation pipe H, an outdoor liquid pipe D, an outdoor gas pipe E, and an accumulator pipe. F, a suction pipe G, and an injection circuit J are provided.

  Hereinafter, the connection state of each refrigerant pipe will be described in the order of the flow path where the refrigerant discharged from the compressor 21 flows out and is sucked into the compressor 21 again.

  The discharge pipe A connects the discharge side of the compressor 21 and the four-way switching valve 22.

  The indoor side gas pipe B connects the four-way switching valve 22 and the gas side of the indoor heat exchanger 41.

  The indoor side liquid pipe C connects the liquid side of the indoor heat exchanger 41 and the outdoor electronic expansion valve 24. Here, the indoor side liquid pipe C includes a liquid communication pipe 6 that connects the outdoor unit 2 and the indoor unit 4.

  The gas-liquid separation pipe H connects the outdoor electronic expansion valve 24 and the gas-liquid separator 226.

  The outdoor liquid pipe D connects the gas-liquid separator 226 and the liquid side of the outdoor heat exchanger 23.

  The outdoor gas pipe E connects the gas side of the outdoor heat exchanger 23 and the four-way switching valve 22.

  The accumulator pipe F connects the four-way switching valve 22 and the accumulator 25. An injection circuit J joins the accumulator tube F on the way.

  The suction pipe G connects the accumulator 25 and the suction side of the compressor 21.

  The injection circuit J connects the gas layer of the gas-liquid separator 226 and the accumulator tube F. The injection circuit J includes an electromagnetic valve 227 that can adjust the flow rate, and a capillary tube 228 that functions as a pressure reducing mechanism. The electromagnetic valve 227 is connected to the gas layer of the gas-liquid separator 226 via a part of the refrigerant piping of the injection circuit J. The electromagnetic valve 227 is connected to the capillary tube 228 via a part of the refrigerant piping of the injection circuit J. The capillary tube 228 joins the accumulator pipe F via a part of the refrigerant pipe of the injection circuit J. As a result, in the injection circuit J, the solenoid valve 227 is opened to connect to the suction side of the compressor 21, so that the gas refrigerant existing in the gas layer of the gas-liquid separator 226 passes through the capillary tube 228. It will flow toward the accumulator F while being decompressed.

  Thus, the 2nd refrigerant circuit 12 is constituted, and heating operation can be performed because a refrigerant circulates and flows in the direction mentioned above. The cooling operation can also be performed by switching the connection state of the four-way switching valve 22.

(Heating of gas-liquid separation tube H)
Here, the electromagnetic induction heat generating portion Q is provided in the middle of the gas-liquid separation pipe H connecting the outdoor electronic expansion valve 24 and the gas-liquid separator 226. The work coil 70 is wound around the electromagnetic induction heat generating portion Q of the gas-liquid separation tube H, and is connected to the high frequency power supply 60 by a connection wiring 71.

  Here, between the gas-liquid separation tube H and the work coil 70, a resin bobbin 72 having both ends projecting on the circumference is interposed in order to prevent the shift of the winding position. The bobbin 72 covers the periphery of the electromagnetic induction heat generating portion Q of the discharge pipe A, and the work coil 70 is wound around the outside of the bobbin 72 (similar to FIG. 2 of the first embodiment).

  As a result, the work coil 70 that receives the supply of high-frequency power from the high-frequency power supply 60 generates innumerable lines of magnetic force in the vicinity of the electromagnetic induction heat generating portion Q of the gas-liquid separation tube H, and heats the electromagnetic induction heat generating portion Q by electromagnetic induction. Can do.

  Here, the electromagnetic induction heat generating part Q may be configured to be, for example, the entire gas-liquid separation tube H, or may be formed only on the inner surface or the outer surface of the gas-liquid separation tube H. Alternatively, a configuration in which the electromagnetic induction heat generating portion Q is included in the gas-liquid separation tube H may be employed.

(Characteristic)
Here, the high-density liquid refrigerant condensed and liquefied in the indoor heat exchanger 41 can be heated by the electromagnetic induction heating part Q of the gas-liquid separation pipe H. For this reason, compared with the case where it heats targeting the refrigerant | coolant of a low density state like a gas refrigerant | coolant, heating capability can be improved.

  In addition, when the heating operation is started, the compressor 21 may not be sufficiently warmed, but here, the electromagnetic induction heat generating portion Q generates heat, and is condensed and liquefied in the indoor heat exchanger 41. The liquid refrigerant having a high density can be heated by the electromagnetic induction heat generating portion Q of the gas-liquid separation tube H, and the lack of capacity at the time of startup can be compensated.

  Furthermore, when the defrost operation which removes the frost adhering to the outdoor heat exchanger 23 is performed by switching the four-way switching valve 22 to the cooling operation state, the outdoor heat exchanger 23 is removed to remove the frost. The hot gas to be sent can be further increased by increasing the liquid refrigerant temperature due to the heat generated by the electromagnetic induction heat generating portion Q of the gas-liquid separation tube H. Thereby, the time required to thaw frost by defrost operation can be shortened. Thereby, even if it is necessary to perform a defrost operation in a timely manner during the heating operation, the operation can be returned to the heating operation as soon as possible, and the user's comfort can be improved.

  In addition, since the carbon dioxide refrigerant is used as the refrigerant, the refrigerant temperature is greatly reduced by expansion in the outdoor electronic expansion valve 24 as compared with the case where the HFC refrigerant is used, and the electromagnetic induction of the gas-liquid separation pipe H It is possible to receive more heat due to the heat generated by the heat generating portion Q, and it is possible to sufficiently evaporate the refrigerant by heat exchange in the outdoor heat exchanger 23 so that the refrigerant can be operated dry, and further compressed by the compressor 21. Therefore, it is possible to produce a high-temperature gas refrigerant with energy saving. Thereby, the heating operation using the gas refrigerant in a high temperature state is possible due to energy saving, and the heating efficiency can be improved.

<Modification of Second Embodiment>
(A)
As shown in FIG. 9, the air conditioner 201 in the second refrigerant circuit 12 connects the liquid side of the indoor heat exchanger 41 and the gas-liquid separator 226 to the gas-liquid separation and expansion. The tube K connects the gas-liquid separator 226 and the outdoor electronic expansion valve 24, and the outdoor liquid tube D connects the outdoor electronic expansion valve 24 and the liquid side of the outdoor heat exchanger 23. The electromagnetic induction heat generating part Q may be a part of the indoor side liquid pipe C connecting the indoor heat exchanger 41 and the gas-liquid separator 226. Even in this case, the work coil 70 is wound around the electromagnetic induction heat generating portion Q of the indoor liquid pipe C, the connection wiring 71 and the high frequency power supply 60 are connected, and the work coil 70 is supplied with high frequency power. By performing the above, it is possible to generate innumerable lines of magnetic force around the electromagnetic induction heat generating portion Q and to heat the electromagnetic induction heat generating portion Q.

  Thereby, it is possible to efficiently heat the liquid refrigerant in a high density state from the indoor heat exchanger 41 toward the gas-liquid separator 226, and it is possible to improve the heating capacity.

  In addition, when the heating operation is started, the compressor 21 may not be sufficiently warmed, but here, the electromagnetic induction heat generating portion Q generates heat, and is condensed and liquefied in the indoor heat exchanger 41. Thus, it is possible to efficiently heat the liquid refrigerant having a high density, and it is possible to make up for a lack of capacity at the time of startup.

  Furthermore, when the defrost operation which removes the frost adhering to the outdoor heat exchanger 23 is performed by switching the four-way switching valve 22 to the cooling operation state, the outdoor heat exchanger 23 is removed to remove the frost. The hot gas to be sent can be further increased by the rise of the liquid refrigerant temperature due to the heat generated by the electromagnetic induction heat generating portion Q of the indoor liquid pipe C. Thereby, the time required to thaw frost by defrost operation can be shortened. Thereby, even if it is necessary to perform a defrost operation in a timely manner during the heating operation, the operation can be returned to the heating operation as soon as possible, and the user's comfort can be improved.

(B)
As shown in FIG. 10, the air conditioner 201 in the second refrigerant circuit 12 connects the liquid side of the indoor heat exchanger 41 and the gas-liquid separator 226 to the gas-liquid separation and expansion. The tube K connects the gas-liquid separator 226 and the outdoor electronic expansion valve 24, and the outdoor liquid tube D connects the outdoor electronic expansion valve 24 and the liquid side of the outdoor heat exchanger 23. Good. Further, the electromagnetic induction heat generating portion Q, the work coil 70, and the high frequency power supply are made while the electromagnetic induction heat generating portion Q is a portion of the indoor side liquid pipe C connecting the indoor heat exchanger 41 and the gas-liquid separator 226. 60 may be covered with a single casing so as to be arranged as a refrigerant heating unit 82 between the outdoor unit 2 and the indoor unit 4. Even in this case, the work coil 70 is wound around the electromagnetic induction heat generating portion Q of the indoor liquid pipe C, the connection wiring 71 and the high frequency power supply 60 are connected, and the work coil 70 is supplied with high frequency power. By performing the above, it is possible to generate innumerable lines of magnetic force around the electromagnetic induction heat generating portion Q and to heat the electromagnetic induction heat generating portion Q.

  Thereby, it is possible to efficiently heat the liquid refrigerant in a high density state from the indoor heat exchanger 41 toward the gas-liquid separator 226, and it is possible to improve the heating capacity.

  In addition, when the heating operation is started, the compressor 21 may not be sufficiently warmed, but here, the electromagnetic induction heat generating portion Q generates heat, and is condensed and liquefied in the indoor heat exchanger 41. Thus, it is possible to efficiently heat the liquid refrigerant having a high density, and it is possible to make up for a lack of capacity at the time of startup.

  Furthermore, when the defrost operation which removes the frost adhering to the outdoor heat exchanger 23 is performed by switching the four-way switching valve 22 to the cooling operation state, the outdoor heat exchanger 23 is removed to remove the frost. The hot gas to be sent can be further increased by the rise of the liquid refrigerant temperature due to the heat generated by the electromagnetic induction heat generating portion Q of the indoor liquid pipe C. Thereby, the time required to thaw frost by defrost operation can be shortened. Thereby, even if it is necessary to perform a defrost operation in a timely manner during the heating operation, the operation can be returned to the heating operation as soon as possible, and the user's comfort can be improved.

  Furthermore, since the refrigerant heating unit 82 is unitized, after the outdoor unit 2 and the indoor unit 4 are connected via the liquid refrigerant communication pipe 6 and the gas refrigerant communication pipe 7, a refrigerant circuit is completed. In addition, the refrigerant heating unit 82 can be easily retrofitted to the existing air conditioner.

<Third Embodiment>
In the air conditioner 301 of the third embodiment, as shown in FIG. 11, a third refrigerant circuit 13 configured by connecting the outdoor unit 2 and the indoor unit 4 with a liquid refrigerant communication pipe 6 and a gas refrigerant communication pipe 7. It has. Each refrigerant pipe of the third refrigerant circuit 13 is made of a magnetic material containing iron.

  The third refrigerant circuit 13 includes a compressor 21, a four-way switching valve 22, an outdoor heat exchanger 23, an outdoor electric expansion valve 24, a receiver 326, and the like disposed inside the outdoor unit 2. The third refrigerant circuit 13 includes an indoor heat exchanger 41 and the like inside the indoor unit 4. In addition, the four-way switching valve 22 has shown the switching connection state in the case of performing heating operation in FIG.

  Here, the refrigerant flowing in the third refrigerant circuit 13 is a carbon dioxide refrigerant.

  As shown in FIG. 11, the third refrigerant circuit 13 includes a discharge pipe A, an indoor side gas pipe B, an indoor side liquid pipe C, a bridge circuit Z, a first receiver pipe N1, a second receiver pipe N2, and a third receiver pipe. N3, outdoor liquid pipe D, outdoor gas pipe E, suction pipe G, and bypass circuit P are provided.

  Hereinafter, the connection state of each refrigerant pipe will be described in the order of the flow path where the refrigerant discharged from the compressor 21 flows out and is sucked into the compressor 21 again.

  The discharge pipe A connects the discharge side of the compressor 21 and the four-way switching valve 22.

  The indoor side gas pipe B connects the four-way switching valve 22 and the gas side of the indoor heat exchanger 41.

  The indoor side liquid pipe C connects the liquid side of the indoor heat exchanger 41 and the branch point Z1 of the bridge circuit Z. Here, the indoor side liquid pipe C includes a liquid communication pipe 6 that connects the outdoor unit 2 and the indoor unit 4.

  The bridge circuit Z has four branch points: a branch point Z1, a branch point Z2, a branch point Z3, and a branch point Z4. The branch point Z1 to the branch point Z2, the branch point Z3 to the branch point Z2, and the branch point Z4. Only the flow from the branch point Z3 to the branch point Z4 and from the branch point Z4 to the branch point Z1 is permitted. Therefore, the liquid refrigerant flowing from the indoor liquid pipe C flows into the branch point Z1 of the bridge circuit Z, flows toward the branch point Z2, and flows out of the bridge circuit Z through the branch point 2.

  The first receiver pipe N1 connects the branch point Z2 of the bridge circuit Z and the receiver 326, and sends the liquid refrigerant that has exited the bridge circuit Z to the receiver 326.

  The second receiver pipe N <b> 2 connects the liquid layer of the receiver 326 and the outdoor electronic expansion valve 24, and sends the refrigerant from the liquid layer of the receiver 326 to the outdoor electronic expansion valve 24.

  The third receiver pipe N3 connects the outdoor electronic expansion valve 24 and the branch point Z4 of the bridge circuit Z, and sends the refrigerant from the outdoor electronic expansion valve 24 to the branch point Z4 of the bridge circuit Z. Note that the refrigerant that has flowed into the bridge circuit Z from the branch point Z4 of the bridge circuit Z mainly flows toward the branch point Z3, partly flows toward the branch point Z1, and is sent to the receiver 326 again.

  The outdoor liquid pipe D connects the branch point Z3 of the bridge circuit Z and the liquid side of the outdoor heat exchanger 23.

  The outdoor gas pipe E connects the gas side of the outdoor heat exchanger 23 and the four-way switching valve 22.

  The suction pipe G connects the four-way switching valve 22 and the suction side of the compressor 21. Note that a bypass circuit P joins the suction pipe G on the way.

  The bypass circuit P connects the gas layer of the receiver 326 and the suction pipe G. The bypass circuit P includes an electromagnetic valve 328 whose flow rate can be adjusted, and a capillary tube 329 that functions as a pressure reducing mechanism. The electromagnetic valve 328 is connected to the gas layer of the receiver 326 and a part of the refrigerant piping of the bypass circuit P. The electromagnetic valve 328 is connected to the capillary tube 329 through a part of the refrigerant pipe of the bypass circuit P. The capillary tube 329 joins the suction pipe G via a part of the refrigerant pipe of the bypass circuit P. As a result, the bypass pipe P is connected to the suction side of the compressor 21 by opening the electromagnetic valve 328, so that the gas refrigerant present in the gas layer of the receiver 326 is decompressed when passing through the capillary tube 329. However, it flows toward the suction pipe G.

  Thus, the 3rd refrigerant circuit 13 is constituted and heating operation can be performed because a refrigerant circulates and flows in the direction mentioned above. The cooling operation can also be performed by switching the connection state of the four-way switching valve 22.

(Heating of the first receiver tube N1)
Here, the electromagnetic induction heat generating portion Q is provided in the middle of the first receiver pipe N1 connecting the branch point Z2 of the bridge circuit Z and the receiver 326. The work coil 70 is wound around the electromagnetic induction heat generating portion Q of the first receiver tube N1 and is connected to the high frequency power source 60 by the connection wiring 71.

  Here, between the first receiver tube N1 and the work coil 70, a resin bobbin 72 having both ends projecting on the circumference is interposed to prevent the winding position from shifting. The bobbin 72 covers the periphery of the electromagnetic induction heat generating portion Q of the discharge pipe A, and the work coil 70 is wound around the outside of the bobbin 72 (similar to FIG. 2 of the first embodiment).

  Thereby, the work coil 70 that receives the high-frequency power from the high-frequency power supply 60 generates innumerable lines of magnetic force in the vicinity of the electromagnetic induction heat generating portion Q of the first receiver tube N1, and heats the electromagnetic induction heat generating portion Q by electromagnetic induction. Can do.

  Note that the electromagnetic induction heat generating portion Q here may be configured to be the entire first receiver tube N1, for example, or may be formed only on the inner surface or the outer surface of the first receiver tube N1. The electromagnetic induction heat generating part Q may be included in the first receiver pipe N1.

(Characteristic)
Here, the high-density liquid refrigerant condensed and liquefied in the indoor heat exchanger 41 can be heated by the electromagnetic induction heating part Q of the first receiver pipe N1. For this reason, compared with the case where it heats targeting the refrigerant | coolant of a low density state like a gas refrigerant | coolant, heating capability can be improved.

  In addition, when the heating operation is started, the compressor 21 may not be sufficiently warmed, but here, the electromagnetic induction heat generating portion Q generates heat, and is condensed and liquefied in the indoor heat exchanger 41. The high-density liquid refrigerant can be efficiently heated by the electromagnetic induction heat generating part Q of the first receiver pipe N1, and the lack of capacity at the time of startup can be compensated.

  Furthermore, when the defrost operation which removes the frost adhering to the outdoor heat exchanger 23 is performed by switching the four-way switching valve 22 to the cooling operation state, the outdoor heat exchanger 23 is removed to remove the frost. The hot gas to be sent can be further increased by increasing the liquid refrigerant temperature due to the heat generation of the electromagnetic induction heat generating portion Q of the first receiver pipe N1. Thereby, the time required to thaw frost by defrost operation can be shortened. Thereby, even if it is necessary to perform a defrost operation in a timely manner during the heating operation, the operation can be returned to the heating operation as soon as possible, and the user's comfort can be improved.

  In addition, since the carbon dioxide refrigerant is used as the refrigerant, the refrigerant temperature is greatly reduced as compared with the case where the HFC refrigerant is used, and the heat exchange can be performed efficiently in the outdoor heat exchanger 23. More heat can be received by the heat generated by the electromagnetic induction heat generating portion Q of the receiver pipe N1, and a high-temperature gas refrigerant can be created with energy saving. Thereby, the heating operation using the gas refrigerant in a high temperature state is possible due to energy saving, and the heating efficiency can be improved.

<Modification of Third Embodiment>
(A)
As shown in FIG. 12, in the third refrigerant circuit 13, the air conditioner 301 is connected to the electromagnetic induction heat generating portion Q and the liquid layer of the receiver 326 and the outdoor electronic expansion valve 24 in the second receiver pipe N2. It is good also as a part of. Even in this case, the work coil 70 is wound around the electromagnetic induction heat generating portion Q of the second receiver pipe N2, the connection wiring 71 and the high frequency power supply 60 are connected, and high frequency power is supplied to the work coil 70. By performing the above, it is possible to generate innumerable lines of magnetic force around the electromagnetic induction heat generating portion Q and to heat the electromagnetic induction heat generating portion Q.

  Thereby, it is possible to efficiently heat the liquid refrigerant in a high density state from the receiver 326 toward the outdoor electronic expansion valve 24, and to improve the heating capacity.

  In addition, when the heating operation is started, the compressor 21 may not be sufficiently warmed, but here, the electromagnetic induction heat generating portion Q generates heat, and is condensed and liquefied in the indoor heat exchanger 41. Thus, it is possible to efficiently heat the liquid refrigerant having a high density, and it is possible to make up for a lack of capacity at the time of startup.

  Furthermore, when the defrost operation which removes the frost adhering to the outdoor heat exchanger 23 is performed by switching the four-way switching valve 22 to the cooling operation state, the outdoor heat exchanger 23 is removed to remove the frost. The hot gas to be sent can be further increased by increasing the liquid refrigerant temperature due to the heat generated by the electromagnetic induction heat generating portion Q of the second receiver pipe N2. Thereby, the time required to thaw frost by defrost operation can be shortened. Thereby, even if it is necessary to perform a defrost operation in a timely manner during the heating operation, the operation can be returned to the heating operation as soon as possible, and the user's comfort can be improved.

<Fourth embodiment>
The air conditioning apparatus of 4th Embodiment is an air conditioning apparatus provided with the indoor drain pan 50 inside the indoor unit, as shown in FIG.

  The indoor drain pan 50 is disposed inside the indoor unit and in a position covering at least a part or the whole of the indoor heat exchanger, and secures drain water generated by the indoor heat exchanger on the upper surface side. The indoor drain pan 50 is at least partially or entirely configured by an electromagnetic induction heat generating portion Q such as a sheet metal.

  And as shown in FIG. 13, the work coil 70 is arrange | positioned in the downward vicinity of this indoor drain pan 50. As shown in FIG. As a result, when a high-frequency current is supplied to the work coil 70, countless lines of magnetic force are generated so as to penetrate the indoor drain pan 50, and the electromagnetic induction heating portion Q of the indoor drain pan 50 generates heat.

  Thereby, the drain water collected on the upper surface of the indoor drain pan 50 can be heated to promote evaporation, and a drainage mechanism to the outside becomes unnecessary. Furthermore, by drying the upper surface of the indoor drain pan 50, it is possible to prevent the propagation of germs and keep it clean.

<Modification of Fourth Embodiment>
The indoor drain pan 50 having the electromagnetic induction heat generating portion Q, the work coil 70, and the high frequency power source not shown in FIG. 14 are unitized as an indoor drain pan heating unit 83 housed in one casing. It may be.

  By being unitized, it is possible to easily retrofit even existing indoor units.

<Fifth Embodiment>
The air conditioning apparatus of 5th Embodiment is an air conditioning apparatus provided with the outdoor drain pan 51 inside the outdoor unit, as shown in FIG.

  The outdoor drain pan 51 is disposed inside the outdoor unit and at a position covering at least a part or the whole of the outdoor heat exchanger, and secures drain water generated by the outdoor heat exchanger on the upper surface side. This outdoor drain pan 51 is at least partially or entirely configured by an electromagnetic induction heat generating portion Q such as a sheet metal.

  As shown in FIG. 15, a work coil 70 is placed on the outdoor drain pan 51. As a result, when a high-frequency current is supplied to the work coil 70, countless lines of magnetic force are generated so as to penetrate the outdoor drain pan 51, and the electromagnetic induction heating part Q of the outdoor drain pan 51 generates heat.

  Thereby, it is possible to prevent frost from forming on the outdoor heat exchanger disposed on the upper surface of the outdoor drain pan 51. Moreover, it is possible to prevent ice-up in which frost that has reached the lower side of the outdoor heat exchanger gradually increases upward.

<Sixth Embodiment>
The air conditioning apparatus of 6th Embodiment is an air conditioning apparatus provided with the indoor unit 604 which has the wind direction adjustment flap 643, as shown in FIG.

  As shown in FIG. 16, the indoor unit 604 is provided with an indoor suction grill 642 on the lower surface, and the indoor air is sucked into the interior through the indoor suction grill 642. And the conditioned air heat-exchanged inside the indoor unit 604 is supplied indoors through the blowout port of the indoor unit 604. Here, a wind direction adjusting flap 643 is provided at the outlet of the indoor unit 604 to determine the blowing direction of the conditioned air.

  And as shown in FIG. 16, this wind direction adjustment flap 643 is comprised partly or entirely as the electromagnetic induction heat generating part Q, and the work coil 70 is wound around it. As a result, when a high-frequency current is supplied to the work coil 70, innumerable lines of magnetic force are generated so as to penetrate the wind direction adjusting flap 643, and the electromagnetic induction heating portion Q of the wind direction adjusting flap 643 generates heat.

  Thereby, the air which blows off indoors from a blower outlet can be warmed.

  For example, at the time of heating operation, air with higher temperature can be supplied indoors by supplementing the heating operation with insufficient capacity.

  For example, during cooling operation, conditioned air that is too cold can be warmed and supplied to the room. Even when a plurality of such indoor units 604 are installed and the refrigerant circuit is operated under the same conditions, whether high-frequency power is supplied to the wind direction adjusting flaps 643 of the individual indoor units 604. No, it becomes possible to finely adjust the temperature of the blown-out conditioned air quickly.

<Seventh embodiment>
As shown in FIG. 17, the air conditioner of the seventh embodiment is an air conditioner in which a part or all of the indoor suction grill 642 shown in FIG.

  As shown in FIG. 17, the work coil 70 is disposed above the indoor suction grill 642. As a result, when a high-frequency current is supplied to the work coil 70, countless lines of magnetic force are generated so as to penetrate the indoor suction grill 642, and the electromagnetic induction heat generating portion Q of the indoor suction grill 642 generates heat.

  Thereby, the air sucked from the indoor suction grill 642 can be heated before heat exchange, and the temperature of the air blown into the room can be further increased.

  For example, at the time of heating operation, air with higher temperature can be supplied indoors by supplementing the heating operation with insufficient capacity.

  For example, during cooling operation, conditioned air that is too cold can be warmed and supplied to the room. Even if a plurality of such indoor units 604 are installed and the refrigerant circuit is operated under the same conditions, whether high-frequency power is supplied to the indoor suction grilles 642 of the individual indoor units 604. No, it becomes possible to finely adjust the temperature of the blown-out conditioned air quickly.

  When an air filter is provided in the vicinity of the indoor suction grill 642, the air filter can be sterilized by heating with the heat of the indoor suction grill 642 that rises in temperature by electromagnetic induction heating.

<Eighth Embodiment>
As shown in FIG. 18, the air conditioner of the eighth embodiment is an air conditioner including a duct 830 such as an indoor duct for sending room air, a harmony duct for sending conditioned air, or a ventilation duct for performing ventilation. .

  As shown in FIG. 18, the duct 830 has a plurality of duct fins 831 extending in the internal air flow direction. These duct fins 831 are arranged in a state substantially parallel to each other. A work coil 70 is disposed in the vicinity of these duct fins 831 (in the vicinity of the duct 830). Thereby, when a high-frequency current is supplied to the work coil 70, countless lines of magnetic force are generated so as to penetrate the duct fin 831, and the electromagnetic induction heat generating portion Q of the duct fin 831 generates heat.

  Thereby, the air in the duct 830 passing through the vicinity of the surface of the duct fin 831 can be heated and warmed.

  For example, during heating operation, while the heated conditioned air after heat exchange is being transported to the target position by the duct 830, it is suppressed from being cooled by the ambient temperature of the duct 830, and heat loss during the transport of conditioned air is reduced. Can be made. In addition, when the heating operation seems to be insufficient, heating the air in the duct 830 that passes near the surface of the duct fin 831 makes it possible to compensate for the lack of capacity and supply higher temperature air to the room. it can.

  For example, during cooling operation, conditioned air that is too cold can be warmed and supplied to the room.

  Further, when the humidified air is transported through the duct 830, condensation occurring inside the duct 830 can be suppressed, and humidification can be performed more efficiently.

  In addition, when removing the frost attached to the outdoor heat exchanger during the heating operation by performing the defrost operation, the refrigerant circuit may temporarily become a circuit for the cooling operation, so that cold air may flow out into the room, By causing the duct fin 831 to generate heat, it is possible to prevent such a cold draft.

<Ninth Embodiment>
The air conditioning apparatus of 9th Embodiment is an air conditioning apparatus provided with the indoor heat exchanger 941, as shown in FIG.

  The indoor heat exchanger 941 includes a plurality of heat exchange fins 941F, part or all of which are configured by the electromagnetic induction heat generating unit Q, and a part or all of which is configured by the electromagnetic induction heat generating unit Q. And a plurality of heat transfer tubes 941P penetrating through 941F.

  A work coil 70 is disposed in the vicinity of these heat exchange fins 941F and in the vicinity of the heat transfer tube 941P. As a result, when a high-frequency current is supplied to the work coil 70, innumerable lines of magnetic force are generated so as to penetrate the heat exchange fins 941F and the heat transfer tubes 941P, and the electromagnetic induction heating portions Q of the heat exchange fins 941F and the heat transfer tubes 941P generate heat. .

  Thus, the heat exchange air passing through the vicinity of the surfaces of the heat exchange fins 941F and the heat transfer tubes 941P can perform not only heat exchange with the refrigerant but also heat exchange with the generated electromagnetic induction heating unit Q. The temperature of the conditioned air that has passed through the exchanger 941 can be further increased.

  This makes it possible to supplement or improve the heating capacity during the heating operation.

  On the other hand, the amount of heat supplied to the refrigerant flowing inside the indoor heat exchanger 941 can be increased by generating heat from the heat induction fins 941F and the electromagnetic induction heat generating portion Q of the heat transfer tubes 941P. Thus, it is possible to promote the evaporation of the refrigerant during the cooling operation. In addition, the amount of frost attached to the indoor heat exchanger 941 can be reduced.

<Tenth Embodiment>
The air conditioning apparatus of 10th Embodiment is an air conditioning apparatus provided with the outdoor heat exchanger 923, as shown in FIG.

  This outdoor heat exchanger 923 includes a plurality of heat exchange fins 923F, part or all of which are constituted by electromagnetic induction heat generating parts Q, and a part or all of which are constituted by electromagnetic induction heat generating parts Q, and a plurality of heat exchange fins. And a plurality of heat transfer tubes 923P penetrating through 923F.

  A work coil 70 is disposed in the vicinity of these heat exchange fins 923F and in the vicinity of the heat transfer tube 923P. Thereby, when a high frequency current is supplied to the work coil 70, countless lines of magnetic force are generated so as to penetrate through the heat exchange fins 923F and the heat transfer tubes 923P, and the electromagnetic induction heating portions Q of the heat exchange fins 231F and the heat transfer tubes 923P generate heat. .

  Thus, the heat exchange air passing through the vicinity of the surfaces of the heat exchange fins 923F and the heat transfer tubes 923P can exchange heat not only with the refrigerant but also with the heat generated electromagnetic induction heat generating portion Q, and the outdoor heat The temperature of the conditioned air that has passed through the exchanger 923 can be further increased.

  This makes it possible to supplement or improve the heating capacity during the heating operation.

  On the other hand, the amount of heat supplied to the refrigerant flowing inside the outdoor heat exchanger 923 can be increased by the heat generation of the electromagnetic induction heat generating portion Q of the heat exchange fins 923F and the heat transfer tubes 923P. Thereby, it is possible to promote the evaporation of the refrigerant during the heating operation. Further, the amount of frost adhering to the outdoor heat exchanger 923 during the heating operation can be reduced by heat generation by the heat induction fins 923F and the electromagnetic induction heat generating portion Q of the heat transfer pipe 923P, and from below the outdoor heat exchanger 923. It becomes possible to prevent ice-up in which frost grows upward.

<Eleventh embodiment>
As shown in FIG. 21, the air conditioner according to the eleventh embodiment is an air conditioner including a cross flow fan 944.

  The cross flow fan 944 is partially or entirely configured by an electromagnetic induction heat generating portion Q.

  A work coil 70 is wound around the cross flow fan 944. As a result, when a high-frequency current is supplied to the work coil 70, countless lines of magnetic force are generated so as to penetrate the cross flow fan 944, and the electromagnetic induction heat generating portion Q of the cross flow fan 944 generates heat.

  Thereby, the air which passes the surface vicinity of the crossflow fan 944 can be heated, and it becomes possible to improve a heating capability.

  For example, during cooling operation, conditioned air that is too cold can be warmed and supplied to the room.

  Furthermore, when humidified air is allowed to pass through the cross flow fan 944, condensation occurring in the cross flow fan 944 can be suppressed, and humidification can be performed more efficiently.

  Further, since the crossflow fan 944 generates heat even during the cooling operation, condensation is unlikely to occur in the crossflow fan 944 itself, and the conditioned air and the condensed water are prevented from blowing out into the room together. be able to.

  In addition, when removing the frost attached to the outdoor heat exchanger during the heating operation by performing the defrost operation, the refrigerant circuit may temporarily become a circuit for the cooling operation, so that cold air may flow out into the room, By causing the cross flow fan 944 to generate heat, it is possible to prevent such a cold draft.

<Twelfth embodiment>
The air conditioning apparatus of 12th Embodiment is an air conditioning apparatus provided with the water heat exchanger 141, as shown in FIG.

  The water heat exchanger 141 has a water heat exchange heat transfer tube 141P, part or all of which is composed of an electromagnetic induction heat generating part Q.

  A work coil 70 is arranged in the vicinity of these water heat exchange heat transfer tubes 141P. Thus, when a high-frequency current is supplied to the work coil 70, innumerable lines of magnetic force are generated so as to penetrate the water heat exchange heat transfer tube 141P, and the electromagnetic induction heating part Q of the water heat exchange heat transfer tube 141P generates heat.

  Thereby, freezing of the water heat exchange heat exchanger tube 141P can be prevented. Moreover, the ability to evaporate the refrigerant | coolant inside the water heat exchange heat exchanger tube 141P can be improved.

<13th Embodiment>
The air conditioner of the thirteenth embodiment is an air conditioner including an indoor unit 404 having an indoor unit component Q as shown in the schematic perspective view of the indoor unit in FIG. 23 and the sectional view of the indoor unit in FIG.

  As shown in FIGS. 23 and 24, the indoor unit 404 has a suction port 445, an air outlet 444, and an indoor fan 411. The suction port 445 is provided with a suction grill 442, and the air outlet 444 is provided with a wind direction adjusting plate 443.

  Further, the indoor unit 404 is provided with an indoor heat exchanger 441 in order to exchange heat with air before being sucked into the indoor unit 404 from the suction port 445 of the indoor unit 404 and reaching the outlet 444.

  Furthermore, in order to warm the air before the indoor unit 404 is sucked into the indoor unit 404 from the suction port 445 of the indoor unit 404 and reaches the outlet 444, an electromagnetic induction heating part Q and a work coil 70 are provided. Yes. Here, it is provided between the indoor heat exchanger 441 and the air outlet 444, but if the air sucked from the air inlet 445 is provided on the way to the air outlet 444, it is at another position. It doesn't matter.

  When the indoor fan 411 is rotationally driven, the air in the target space in which the indoor unit 404 is installed is sucked into the indoor unit 404 through the suction grill 442 of the suction port 445 and heat exchange is performed by the indoor heat exchanger 441. After being heated, it is warmed by the heat generating electromagnetic induction heating part Q, and conditioned air is sent to the target space from the air outlet 444 in a desired direction by the air direction adjusting plate 443.

  Here, during the heating operation, it can also function as an auxiliary heater that further warms the air, and the temperature of the air whose temperature has been adjusted by exchanging heat with the indoor heat exchanger 441 or the indoor heat, regardless of whether it is during heating or cooling. The temperature of the conditioned air can be finely adjusted by adjusting the amount of heat supplied from the electromagnetic induction heat generating portion Q that is generating heat for the temperature of the air that is heat-exchanged in the exchanger 441.

<Other embodiments>
(A)
In the first to third embodiments, the air conditioner including only the outdoor electronic expansion valve 24 is taken as an example of the expansion mechanism.

  However, the present invention is not limited to this, and for example, an indoor expansion valve may be provided on the liquid side of the indoor heat exchanger 41.

(B)
In the first to third embodiments, a pair type air conditioner in which one indoor unit 4 is provided for one outdoor unit 2 is described as an example.

  However, the present invention is not limited to this, and for example, a plurality of indoor units may be connected in parallel or in series. A plurality of outdoor units may be connected in parallel or in series.

  According to the present invention, partial heating of the air conditioner can be quickly performed by electromagnetic induction heating, and therefore, application to an air conditioner having an electromagnetic induction heat generating portion is particularly useful.

It is a schematic structure figure of the air harmony device concerning a 1st embodiment of the present invention. It is a figure which shows the detailed structure of an electromagnetic induction heat generating part. It is a schematic block diagram of the air conditioning apparatus which concerns on the modification (A) of 1st Embodiment. It is a schematic block diagram of the air conditioning apparatus which concerns on the modification (B) of 1st Embodiment. It is a schematic block diagram of the air conditioning apparatus which concerns on the modification (C) of 1st Embodiment. It is a schematic block diagram of the air conditioning apparatus which concerns on the modification (D) of 1st Embodiment. It is a schematic block diagram of the air conditioning apparatus which concerns on the modification (E) of 1st Embodiment. It is a schematic block diagram of the air conditioning apparatus concerning 2nd Embodiment of this invention. It is a schematic block diagram of the air conditioning apparatus which concerns on the modification (A) of 2nd Embodiment. It is a schematic block diagram of the air conditioning apparatus which concerns on the modification (B) of 2nd Embodiment. It is a schematic block diagram of the air conditioning apparatus concerning 3rd Embodiment of this invention. It is a schematic block diagram of the air conditioning apparatus which concerns on the modification of 3rd Embodiment. It is a schematic block diagram of the air conditioning apparatus concerning 4th Embodiment of this invention. It is a schematic block diagram of the air conditioning apparatus which concerns on the modification of 4th Embodiment. It is a schematic block diagram of the air conditioning apparatus concerning 5th Embodiment of this invention. It is a schematic block diagram of the air conditioning apparatus concerning 6th Embodiment of this invention. It is a schematic block diagram of the air conditioning apparatus concerning 7th Embodiment of this invention. It is a schematic block diagram of the air conditioning apparatus concerning 8th Embodiment of this invention. It is a schematic block diagram of the air conditioning apparatus concerning 9th Embodiment of this invention. It is a schematic block diagram of the air conditioning apparatus concerning 10th Embodiment of this invention. It is a schematic block diagram of the air conditioning apparatus concerning 11th Embodiment of this invention. It is a schematic block diagram of the air conditioning apparatus concerning 12th Embodiment of this invention. It is a schematic perspective view of the indoor unit concerning 13th Embodiment of this invention. It is a schematic sectional block diagram of the indoor unit concerning 13th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioning apparatus 6 Gas side connection piping 7 Liquid side connection piping 10 Refrigerant circuit 21 Compressor 22 Four-way switching valve 23 Outdoor heat exchanger 24 Outdoor expansion valve 25 Accumulator 41 Indoor heat exchanger 60 High frequency power supply 70 Work coil (electromagnetic induction) coil)
71 Connection wiring 72 Ferrite core 73 Bobbin (resin bobbin)
A Discharge pipe, refrigerant pipe (magnetic part, heat generating part)
B Indoor side gas pipe, refrigerant pipe (magnetic part, heat generating part)
C Indoor side liquid pipe D Outdoor side liquid pipe E Outdoor side gas pipe, refrigerant pipe (magnetic part, heat generating part)
F Accumulation pipe, refrigerant pipe (magnetic part, heating part)
G Suction pipe, refrigerant pipe (magnetic part, heat generating part)
H Gas-liquid separation pipe J Injection pipe K Gas-liquid separation expansion pipe P Bypass pipe Q Electromagnetic induction heating section N1 First receiver pipe N2 Second receiver pipe N3 Third receiver pipe Z Bridge circuit

Claims (10)

An electromagnetic induction coil (70);
A high frequency power supply (60) for supplying a high frequency current to the electromagnetic induction coil;
A heating element (Q) located near the electromagnetic induction coil and generating heat by electromagnetic induction;
An air conditioner (1, 201, 301) comprising: The heating element (Q) includes a refrigerant circuit (11, 12, 13, A, B, C, F, G, H, J, K, N1, N2) piping, a drain pan (50, 51), a heat exchanger. (23, 41), fan (944), duct (830, 831), suction grille (642), blowing air direction change plate (643), and humidifier (1, 201, 301) at least one air conditioning mechanism Component parts,
The air conditioner (1, 201, 301) according to claim 1. The heating element (Q) is an air conditioner accessory (831) disposed inside the duct (830).
The air conditioner (1, 201, 301) according to claim 1. A suction port (445) that sucks in air in the target space, a blowout port (444) that blows air sucked through the suction port (445) into the target space, and a suction port (445). And an air conditioning indoor unit (404) having a heat exchanger (441) for exchanging heat with the air before reaching the outlet (444),
The heating element (Q) is an indoor unit-accompanying part that is disposed at a position through which air before reaching the air outlet (444) passes after being sucked through the air inlet (445).
The air conditioner (1, 201, 301) according to claim 1. Further comprising a refrigerant circuit (11, 12, 13) having a refrigerant pipe for circulating a carbon dioxide refrigerant;
The refrigerant pipe includes the heating element (Q) at least in part.
The air conditioner (1, 201, 301) according to any one of claims 1 to 4. An electromagnetic induction coil (70);
A high frequency power supply (60) for supplying a high frequency current to the electromagnetic induction coil;
A magnetic body part (Q) located near the electromagnetic induction coil and including a magnetic material;
An air conditioner (1, 201, 301) comprising: The magnetic body portion (Q) includes refrigerant circuits (11, 12, 13, A, B, C, F, G, H, J, K, N1, N2) piping, drain pans (50, 51), heat exchange. Air conditioner (23, 41), fan (944), duct (830, 831), suction grille (642), blowing air direction change plate (643) and humidifier (1, 201, 301) Machine components,
The air conditioner (1, 201, 301) according to claim 6. The magnetic part (Q) is an air conditioner accessory part (831) disposed inside the duct (830).
The air conditioner (1, 201, 301) according to claim 6. A suction port (445) that sucks in air in the target space, a blowout port (444) that blows air sucked through the suction port (445) into the target space, and a suction port (445). And an air conditioning indoor unit (404) having a heat exchanger (441) for exchanging heat with the air before reaching the outlet (444),
The magnetic body part (Q) is an indoor unit-accompanying part that is disposed at a position through which air before reaching the air outlet (444) passes after being sucked through the air inlet (445).
The air conditioner (1, 201, 301) according to claim 6. Further comprising a refrigerant circuit (11, 12, 13) having a refrigerant pipe for circulating a carbon dioxide refrigerant;
The refrigerant pipe (11, 12, 13) includes the magnetic part (Q) at least in part.
The air conditioner (1, 201, 301) according to any one of claims 6 to 9.

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