WO2019193947A1 - Air conditioning device - Google Patents

Abstract

The present disclosure pertains to air conditioning devices housing constituent components such as the refrigeration cycle within a case, and the purpose of the present disclosure is to provide an air conditioning device having improved refrigeration cycle stability while minimizing increases in the size of the device. In this air conditioning device (1), a refrigeration cycle device (20), a first blower (30), a second blower (31), a warm air switching unit (35), and a cold air switching unit (40) are housed in the interior of a case (10). The first blower delivers air taken in via at least one among a condenser and an evaporator in the interior of the case. The second blower delivers air taken in via at least the other among the condenser and the evaporator in the interior of the case. The warm air switching unit switches the flow of warm air (WA), which comprises air heated when passing through the condenser, between a flow passage for guiding the warm air to a space to be air-conditioned and a flow passage for guiding the warm air to the exterior of the space to be air-conditioned. The cold air switching unit switches the flow of cold air (CA), which comprises air cooled when passing through the evaporator, between a flow passage for guiding the cold air to the space to be air-conditioned and a flow passage for guiding the cold air to the exterior of the space to be air-conditioned.

Description

Air conditioner Cross-reference of related applications

This application is based on Japanese Patent Application No. 2018-71871 filed on April 3, 2018, the contents of which are incorporated herein by reference.

This disclosure relates to an air conditioner in which components such as a refrigeration cycle are housed in a housing.

Conventionally, as an aspect of an air conditioner, a device in which components such as a vapor compression refrigeration cycle apparatus and a blower are accommodated in a casing has been developed. Such an air conditioner is disposed, for example, between a seat surface portion and a floor surface of a seat disposed in a vehicle, and the seat is used as an air-conditioning target space to improve the comfort.

As a technique related to such an air conditioner, for example, a technique described in Patent Document 1 is known. The air conditioner described in Patent Document 1 houses a refrigeration cycle including a condenser and an evaporator, and one centrifugal fan inside a main body case.

In the air conditioner according to Patent Document 1, the centrifugal fan is disposed in the central portion inside the main body case, and the condenser and the evaporator are disposed so as to surround the centrifugal fan. The air conditioner can supply air to the seat by heating / cooling the air blown from the centrifugal fan with a condenser or an evaporator constituting the refrigeration cycle.

JP 2017-187218 A

Here, in the air conditioner described in Patent Document 1, the air blown from one centrifugal fan is supplied to the condenser and the evaporator of the refrigeration cycle. For this reason, the airflow balance on the condenser side and the evaporator side is determined by the ventilation resistance on the downstream side of the blown air flow including the duct. As a result, in the air conditioner according to Patent Document 1, it is considered that it is very difficult to balance the cycle in the refrigeration cycle.

Moreover, the main body of the air conditioner described in Patent Document 1 is arranged in a limited space between the seat surface portion of the seat and the floor, and various components such as a refrigeration cycle and a blower are accommodated in the main body case. is doing. Therefore, when improving the stability of the balance of the refrigeration cycle, it is necessary to pay sufficient attention to increasing the size of the air conditioner itself.

The present disclosure has been made in view of these points, and relates to an air conditioner in which components such as a refrigeration cycle are housed in a housing, and the stability of the refrigeration cycle is improved while suppressing an increase in the size of the device. An object is to provide an air conditioner.

In order to achieve the above object, an air conditioner according to an aspect of the present disclosure includes a housing, a refrigeration cycle device, a first blower, a second blower, a hot air switching unit, and a cold air switching unit. Have. The refrigeration cycle apparatus includes a compressor, a condenser, a decompression unit, and an evaporator, and is accommodated in the housing.

Compressor compresses and discharges refrigerant. The condenser heats the air by releasing heat from the high-pressure refrigerant discharged from the compressor. The decompression unit decompresses the refrigerant that has flowed out of the condenser. The evaporator cools the air by evaporating the low-pressure refrigerant decompressed by the decompression unit.

The first blower blows air sucked through at least one of the condenser and the evaporator inside the casing. The second blower blows air sucked through at least the other of the condenser and the evaporator inside the housing.

The switching unit for hot air relates to a flow of hot air composed of air heated when passing through the condenser, and a ventilation path that guides the hot air to the air-conditioning target space and a ventilation path that guides the hot air to the outside of the air-conditioning target space And switch.

The cold air switching unit switches between a ventilation path that guides the cold air to the air-conditioning target space and a ventilation path that guides the cold air to the outside of the air-conditioning target space, with respect to the flow of the cold air that is cooled when passing through the evaporator. .

That is, the air conditioner accommodates the refrigeration cycle apparatus, the first blower, the second blower, the hot air switching unit, and the cold air switching unit inside the casing. The air conditioner supplies the cold air cooled by the evaporator to the air-conditioning target space by the cold air switching unit, and the hot air heated by the condenser by the hot air switching unit is supplied to the outside of the air-conditioning target space. Can be blown into. That is, the air conditioner can achieve cooling of the air-conditioning target space with a configuration in which the constituent devices are housed in a compact manner.

The air conditioner supplies the warm air heated by the condenser to the air-conditioning target space by the hot air switching unit, and the cool air cooled by the evaporator by the cold air switching unit is external to the air-conditioning target space. Can be blown into. That is, the air conditioner can realize heating of the air-conditioning target space with a configuration in which the constituent devices are housed in a compact manner.

And according to an air conditioner, since the ventilation capability of the 1st blower and the 2nd blower can be adjusted individually, the amount of heat release of the refrigerant in the condenser of the refrigerating cycle device, and the amount of heat absorption of the refrigerant in the evaporator, Each can be adjusted appropriately. As a result, the air conditioner can easily operate the refrigeration cycle apparatus in a balanced manner and stably.

Further, in the casing of the air conditioner, the first blower and the second blower are arranged on the downstream side of the condenser and the evaporator with respect to the air flow. For this reason, according to the air conditioner 1, the freedom degree of design can be raised regarding arrangement | positioning of the 1st air blower in the inside of a housing | casing, and a 2nd air blower, and the enlargement of an air conditioner can be suppressed.

The above and other objects, features, and advantages of the present disclosure will become more apparent from the following detailed description with reference to the accompanying drawings. In the accompanying drawings,
FIG. 1 is an external perspective view of the air conditioner according to the first embodiment. FIG. 2 is a perspective view showing a state in which the upper cover of the air conditioner according to the first embodiment is removed, FIG. 3 is a perspective view illustrating a state where the first blower and the second blower of the air conditioner according to the first embodiment are removed. FIG. 4 is a plan view showing an internal configuration of the air conditioner according to the first embodiment. FIG. 5 is a cross-sectional view showing a VV cross section in FIG. 6 is a cross-sectional view showing a VI-VI cross section in FIG. FIG. 7 is a block diagram illustrating a control system of the air conditioner according to the first embodiment. FIG. 8 is a plan view showing an internal configuration in the heating mode of the air conditioner according to the first embodiment. FIG. 9 is an explanatory diagram showing the flow of air to the supply port side in the heating mode according to the first embodiment, FIG. 10 is an explanatory diagram showing the flow of air to the exhaust port side in the heating mode according to the first embodiment. FIG. 11 is a plan view showing an internal configuration in the air mix mode of the air conditioner according to the first embodiment. FIG. 12 is an explanatory diagram showing the flow of air to the supply port side in the air mix mode according to the first embodiment, FIG. 13 is an explanatory diagram showing the flow of air to the exhaust port side in the air mix mode according to the first embodiment, FIG. 14 is a plan view showing the internal configuration of the air conditioner according to the second embodiment. FIG. 15 is a cross-sectional view showing the XV-XV cross section in FIG. 16 is a cross-sectional view showing the XVI-XVI cross section in FIG. FIG. 17 is an explanatory diagram showing the flow of air to the supply port side in the heating mode according to the second embodiment, FIG. 18 is an explanatory diagram showing the flow of air to the exhaust port side in the heating mode according to the second embodiment.

Hereinafter, a plurality of modes for carrying out the present disclosure will be described with reference to the drawings. In each embodiment, portions corresponding to those described in the preceding embodiment may be denoted by the same reference numerals, and redundant description may be omitted. When only a part of the configuration is described in each embodiment, the other embodiments described above can be applied to other parts of the configuration. Not only combinations of parts that clearly show that combinations are possible in each embodiment, but also combinations of the embodiments even if they are not explicitly stated unless there is a problem with the combination. Is also possible.

Hereinafter, embodiments will be described with reference to the drawings. In the following embodiments, the same or equivalent parts are denoted by the same reference numerals in the drawings.

In addition, the arrows indicating up, down, left, and right in each figure indicate a three-dimensional orthogonal coordinate system (for example, X axis, Y axis, Z axis) in order to facilitate understanding of the positional relationship of each component in the embodiment. ) Is exemplified as a standard corresponding to the above. Accordingly, the attitude and the like of the air conditioner according to the present disclosure are not limited to the states illustrated in the drawings, and can be changed as appropriate.

(First embodiment)
The air conditioner 1 according to the first embodiment is used in a seat air conditioner for improving the comfort of an occupant seated in a seat, with a seat disposed in a vehicle cabin as a space to be air conditioned. The air conditioner 1 is disposed in a small space between the seat surface portion of the seat and the passenger compartment floor, and supplies conditioned air (for example, cold air or hot air) through a duct disposed on the seat. Thus, it is configured to enhance the comfort of the passenger sitting on the seat.

As shown in FIGS. 1 to 3, the air conditioner 1 according to the first embodiment includes a vapor compression refrigeration cycle device 20, a first blower 30, a second blower 31, and a hot air switching unit 35. The cold air switching unit 40 is housed in the housing 10.

Therefore, the air conditioner 1 adjusts the temperature of the air blown by the operation of the first blower 30 and the second blower 31 by the refrigeration cycle device 20 and supplies the air to the occupant sitting on the seat through a duct or the like arranged on the seat. be able to.

First, a specific configuration of the housing 10 will be described with reference to FIGS. 2 shows a state where the upper cover 11 is removed from the state of FIG. 1, and FIG. 3 shows a state where the first blower 30 and the second blower 31 are removed from the state of FIG.

In the air conditioner 1, the housing 10 is formed in a rectangular parallelepiped shape that can be disposed between the seat surface portion of the seat and the floor surface of the passenger compartment. As shown in FIG. 1, the housing 10 includes an upper cover 11 and a main body case 15. It is configured.

The upper cover 11 constitutes the upper surface of the housing 10 and is attached so as to close the opening of the main body case 15 having a box shape with the upper part opened. The upper cover 11 is formed with a hot air vent 12, a cold air vent 13, a supply port 14, and an exhaust port 16.

The hot air vent 12 is opened at the right side of the upper cover 11. The hot air vent 12 is a vent for sucking the air outside the casing 10 (that is, the air in the passenger compartment) into the casing 10 in accordance with the operation of the first blower 30 and the like which will be described later.

As shown in FIG. 1 to FIG. 6, a condenser 22 of the refrigeration cycle apparatus 20 is disposed in the housing 10 at a position below the hot air vent 12. Accordingly, the air sucked from the hot air vent 12 is heated by exchanging heat with the high-pressure refrigerant when passing through the condenser 22 and supplied as hot air WA.

The cold air vent 13 is opened on the left side of the upper cover 11 and is arranged so as to be symmetric with the hot air vent 12. The cold air vent 13 is a vent for sucking air outside the housing 10 into the interior in accordance with the operation of the first blower 30 and the like, like the hot air vent 12.

The evaporator 24 of the refrigeration cycle apparatus 20 is arranged at a position below the cold air vent 13 inside the housing 10. Therefore, the air sucked from the cold air vent 13 is cooled when passing through the evaporator 24 and supplied as cold air CA.

Further, a supply port 14 is opened at the rear center portion of the upper cover 11. The supply port 14 is a vent for supplying conditioned air (for example, hot air WA, cold air CA, mixed air MA) whose temperature has been adjusted by the refrigeration cycle apparatus 20 in the air conditioner 1 to the air-conditioning target space.

In addition, although illustration is abbreviate | omitted, the edge part of the duct is connected to the supply port 14. FIG. The duct is arranged along the side of the seat and the like, and is configured to guide the conditioned air to a space where a passenger is seated in the seat. The space on the seat where the passenger is seated corresponds to the air-conditioning target space.

Further, an exhaust port 16 is opened in the front center portion of the upper cover 11. The exhaust port 16 is an opening through which a part of the air whose temperature has been adjusted by the refrigeration cycle apparatus 20 is exhausted inside the housing 10. The air blown out from the exhaust port 16 is blown to the outside of the air conditioning target space.

The main body case 15 constitutes a main part of the housing 10 and is formed in a box shape with the top opened. As shown in FIGS. 2 to 6, components such as the refrigeration cycle apparatus 20 and the first blower 30 are arranged inside the main body case 15.

In addition, as shown in FIG. 5, FIG. 6, etc., the warm air side ventilation path 17 and the cold air side ventilation path 18 are formed in the inside of the main body case 15. FIG. The warm air side ventilation path 17 is a ventilation path through which the warm air WA heated by the condenser 22 circulates, and the cold air side ventilation path 18 is a ventilation path through which the cold air CA cooled by the evaporator 24 circulates. is there. Each of the hot air side air passage 17 and the cold air side air passage 18 is configured by the housing bottom surface 15A of the main body case 15 and the constituent devices.

Next, the configuration of the refrigeration cycle apparatus 20 in the air conditioner 1 will be described with reference to the drawings. As described above, the refrigeration cycle apparatus 20 is accommodated in the housing 10 and constitutes a vapor compression refrigeration cycle.

The refrigeration cycle apparatus 20 includes a compressor 21, a condenser 22, a decompression unit 23, an evaporator 24, and an accumulator 25. The refrigeration cycle apparatus 20 cools or heats the air blown around the seat, which is the air-conditioning target space, by circulating the refrigerant by the operation of the compressor 21.

Here, the refrigeration cycle apparatus 20 employs an HFC-based refrigerant (specifically, R134a) as a refrigerant, and uses a vapor compression subcritical refrigeration cycle in which the high-pressure side refrigerant pressure does not exceed the critical pressure of the refrigerant. It is composed. Of course, an HFO refrigerant (for example, R1234yf), a natural refrigerant (for example, R744), or the like may be employed as the refrigerant. Furthermore, the refrigerant is mixed with refrigerating machine oil for lubricating the compressor 21, and a part of the refrigerating machine oil circulates in the cycle together with the refrigerant.

Compressor 21 draws in refrigerant in refrigeration cycle apparatus 20, compresses it, and discharges it. The compressor 21 is configured as an electric compressor that drives a fixed displacement type compression mechanism with a fixed discharge capacity by an electric motor. As shown in FIGS. 2 and 3, the compressor 21 is disposed inside the main body case 15. It is arranged on the rear side. In addition, as a compression mechanism of the compressor 21, various compression mechanisms, such as a scroll type compression mechanism and a vane type compression mechanism, are employable.

The operation (the number of rotations) of the electric motor constituting the compressor 21 is controlled by a control signal output from the control unit 60 shown in FIG. And the refrigerant | coolant discharge capability of the compressor 21 is changed because the control part 60 controls the rotation speed of an electric motor.

The inlet side of the condenser 22 is connected to the discharge pipe from which the high-pressure refrigerant compressed by the compressor 21 is discharged. The condenser 22 has a heat exchanging part 22A configured by laminating a plurality of tubes and fins in a flat plate shape, and exchanges heat between the air passing through the heat exchanging part 22A and the high-pressure refrigerant flowing through each tube. Let

As shown in FIGS. 2 to 4, the condenser 22 is arranged on the right side of the main body case 15 and is located below the hot air vent 12. The heat exchanging part 22 </ b> A of the condenser 22 is formed larger than the opening area of the hot air vent 12. Therefore, the air sucked from the hot air vent 12 passes through the heat exchanging portion 22 </ b> A of the condenser 22.

That is, the condenser 22 heat-exchanges the high-temperature and high-pressure discharged refrigerant discharged from the compressor 21 and the air sucked from the hot air vent 12 to heat the air to the hot air WA. Can do. That is, the condenser 22 operates as a heating heat exchanger and functions as a radiator.

And the heat exchanging part 22A of the condenser 22 is formed in a flat plate shape whose longitudinal direction is the direction in which the plurality of tubes and fins extend. As shown in FIGS. 2 to 6, the condenser 22 is arranged so that the longitudinal direction of the heat exchanging portion 22 </ b> A is along the front-rear direction of the air conditioner 1.

Furthermore, as shown in FIGS. 5 and 6, the condenser 22 is arranged such that the heat exchanging portion 22A is positioned above the casing bottom surface 15A by a predetermined distance. The space formed below the condenser 22 is a space through which the hot air WA that has passed through the heat exchanging portion 22 </ b> A circulates, and functions as a part of the warm air side ventilation path 17.

A decompression unit 23 is connected to the outlet side of the condenser 22. The decompression unit 23 is configured by a so-called fixed throttle, and decompresses the refrigerant that has flowed out of the condenser 22. As shown in FIG. 4, the decompression unit 23 is disposed on the front side inside the main body case 15.

In the air conditioner 1, a fixed throttle is used as the decompression unit 23, but the present invention is not limited to this mode. As long as the refrigerant flowing out of the condenser 22 can be depressurized, various configurations can be employed as the depressurization unit. For example, a capillary tube may be employed as the decompression unit 23, or an expansion valve capable of controlling the throttle opening degree by a control signal from the control unit 60 may be used for the decompression unit 23.

The inlet side of the evaporator 24 is connected to the outlet side of the decompression unit 23. The evaporator 24 has a heat exchange part 24A configured in a flat plate shape by laminating a plurality of tubes and fins, absorbs heat from the air passing through the heat exchange part 24A, and generates low-pressure refrigerant flowing through each tube. Evaporate.

As shown in FIGS. 2 to 4, the evaporator 24 is disposed on the left side of the main body case 15 and is located below the cold air vent 13. Therefore, in the air conditioner 1, the evaporator 24 is disposed in the housing 10 with a space in the left-right direction with respect to the condenser 22.

The heat exchanging portion 24A of the evaporator 24 is formed larger than the opening area of the cold air vent 13. Accordingly, the air sucked from the cold air vent 13 passes through the heat exchanging portion 24 </ b> A of the evaporator 24.

That is, the evaporator 24 can cool the air to cool air CA by heat-exchanging the air sucked from the cold air vent 13 and the low-pressure refrigerant decompressed by the decompression unit 23. That is, the evaporator 24 operates as a cooling heat exchanger and functions as a heat absorber.

And the heat exchanging part 24A of the evaporator 24 is formed in a flat plate shape whose longitudinal direction is the direction in which the plurality of tubes and fins extend. As shown in FIGS. 2 to 6, the evaporator 24 is arranged so that the longitudinal direction of the heat exchanging portion 24 </ b> A is along the front-rear direction of the air conditioner 1.

As shown in FIGS. 5 and 6, the evaporator 24 is arranged so that the heat exchanging portion 24A is located above the casing bottom surface 15A by a predetermined distance. The space formed below the evaporator 24 is a space through which the cold air CA that has passed through the heat exchanging section 24 </ b> A flows, and functions as a part of the cold air side ventilation path 18.

The accumulator 25 is connected to the outlet side of the evaporator 24 and is arranged on the left rear side of the main body case 15. The accumulator 25 separates the gas-liquid refrigerant flowing out of the evaporator 24 and stores excess liquid-phase refrigerant in the refrigeration cycle.

The suction pipe of the compressor 21 is connected to the gas phase refrigerant outlet of the accumulator 25. Therefore, the gas phase refrigerant separated by the accumulator 25 is sucked into the compressor 21 via the suction pipe.

As shown in FIG. 2, a first blower 30 and a second blower 31 are disposed inside the housing 10. The first blower 30 is a blower configured to include an impeller having a plurality of blades and an electric motor that rotates the impeller.

The first blower 30 is located on the rear side between the condenser 22 and the evaporator 24, and is located below the supply port 14. Therefore, the 1st air blower 30 can blow with respect to the sheet | seat which is air-conditioning object space via the supply port 14 by rotating an impeller.

And the 2nd air blower 31 is an air blower which has an impeller and an electric motor similarly to the 1st air blower 30. FIG. As shown in FIG. 2, the second blower 31 is disposed between the condenser 22 and the evaporator 24 so as to be adjacent to the front side of the first blower 30.

The second blower 31 is located below the exhaust port 16. Accordingly, the second blower 31 can blow air to the outside of the air-conditioning target space through the exhaust port 16 by rotating the impeller.

As shown in FIG. 3 and the like, a fan support portion 55 is disposed below the first blower 30 and the second blower 31. The fan support portion 55 is disposed between the condenser 22 and the evaporator 24, and has a first attachment opening 56 and a second attachment opening 57. As shown in FIGS. 3 to 6, the fan support portion 55 is disposed so as to be located at a predetermined height from the housing bottom surface 15A of the housing 10, and between the condenser 22 and the evaporator 24. The space is divided up and down.

The first attachment opening 56 is an opening to which the first blower 30 is attached, and is disposed on the rear side of the fan support portion 55. On the other hand, the second attachment opening 57 is an opening to which the second blower 31 is attached and is disposed adjacent to the first attachment opening 56 on the front side of the fan support portion 55.

Therefore, the first blower 30 can suck the air below the fan support portion 55 through the first mounting opening 56 and supply it to the supply port 14. The second blower can suck the air below the fan support portion 55 through the second mounting opening 57 and blow it to the exhaust port 16.

Then, the configuration of the hot air switching unit 35 and the cold air switching unit 40 in the air conditioner 1 will be described with reference to the drawings.

Note that FIG. 5 shows a VV cross section in FIG. 4 and shows an example of the flow of air (cold air CA) by the first blower 30. FIG. 6 shows a cross section taken along the line VI-VI in FIG. 4 and shows an example of the flow of air (warm air WA) by the second blower 31.

As shown in FIG. 3, the air conditioner 1 includes a hot air switching unit 35 and a cold air switching unit 40 below the first blower 30 and the second blower 31 between the condenser 22 and the evaporator 24. And have. The warm air switching unit 35 is a mechanism for switching the air blow destination of the warm air WA heated by the condenser 22. The cold air switching unit 40 is a mechanism for switching the air blowing destination of the cold air CA cooled by the evaporator 24.

The hot air switching unit 35 and the cold air switching unit 40 include a frame member 45 disposed below the fan support unit 55, a supply slide door 46, an exhaust slide door 47, a drive motor 50, and the like. ing.

That is, the hot air switching unit 35 and the cold air switching unit 40 are arranged between the condenser 22 and the evaporator 24 arranged on the left and right sides in the housing 10. The hot air switching unit 35 is located on the right side between the condenser 22 and the evaporator 24 (that is, the side close to the condenser 22), and the cold air switching unit 40 includes the condenser 22 and the evaporator. 24 on the left side (ie, the side close to the evaporator 24).

As shown in FIGS. 5 and 6, the frame member 45 is disposed below the fan support portion 55 between the condenser 22 and the evaporator 24, and extends along the front-rear direction. The frame member 45 is formed in an arc shape that bulges downward with respect to a cross section perpendicular to the front-rear direction.

A partition 45 </ b> A is formed at the lower end of the frame member 45 swelled in an arc shape. The partition portion 45A is formed in a wall shape that closes between the lower end portion of the frame member 45 and the inner surface of the housing bottom surface 15A, and extends in the front-rear direction. That is, the space below the frame member 45 is divided into left and right by the partition portion 45A.

The space below the frame member 45 and on the right side of the partition portion 45A communicates with the space below the condenser 22 and constitutes a part of the warm air side ventilation path 17. Similarly, a space below the frame member 45 and on the left side of the partition portion 45 </ b> A communicates with a space below the evaporator 24 and constitutes a part of the cold air side ventilation path 18.

Further, a partition rib that partitions the space between the fan support portion 55 and the frame member 45 in the front-rear direction is formed at the center in the front-rear direction of the frame member 45. The space on the rear side of the partition rib communicates with the first mounting opening 56 and functions as a supply space 56A into which air supplied from the supply port 14 flows. The space on the front side of the partition rib communicates with the second mounting opening 57 and functions as an exhaust space 57A into which air blown from the exhaust port 16 flows.

The hot air supply opening 36 and the hot air exhaust opening 37 constituting the hot air switching section 35 are arranged on the right side of the partition 45A in the frame member 45 so as to be adjacent to each other in the front-rear direction. The hot air supply opening 36 is formed at the rear right side of the frame member 45, and communicates the supply space 56 </ b> A with the hot air side ventilation path 17. The hot air exhaust opening 37 is formed on the right front side of the frame member 45, and communicates the exhaust space 57 </ b> A and the hot air side ventilation path 17.

As shown in FIGS. 5 and 6, the frame member 45 is formed in an arc shape that bulges downward toward the center in the left-right direction, and the hot air supply opening 36 and the hot air exhaust opening 37 are The right side of the frame member 45 is opened.

Therefore, the opening edges of the hot air supply opening 36 and the hot air exhaust opening 37 are formed so as to draw a downward arc as the distance from the right side of the housing 10 in which the condenser 22 is disposed. That is, of the opening edges of the hot air supply opening 36 and the hot air exhaust opening 37, the portion located on the condenser 22 side is separated from the partition portion through the hot air supply opening 36 and the hot air exhaust opening 37. It faces the part located on the 45A side. And the site | part located in the condenser 22 side is located above the site | part located in the partition part 45A side regarding the up-down direction of the air conditioner 1. FIG.

As a result, the hot air supply openings 36 and the hot air exhaust openings 37 are formed such that the hot air supply openings 36 and the like are formed so as to cross the hot air side ventilation path 17 in the left-right direction (ie, horizontal). It becomes larger than the opening area in the case.

Further, as shown in FIGS. 4 to 6, the condenser 22 is arranged so that the longitudinal direction of the heat exchange part 22A is along the front-rear direction. In the hot air switching section 35, the hot air supply opening 36 and the hot air exhaust opening 37 are arranged side by side in the front-rear direction. In the first embodiment, the front-rear direction corresponds to the predetermined direction.

As a result, the air conditioner 1 has sufficient airflow flowing into the hot air supply opening 36 and airflow flowing into the hot air exhaust opening 37 with respect to the air that has passed through the heat exchanging portion 22A of the condenser 22. Can be secured.

The cold air supply opening 41 and the cold air exhaust opening 42 constituting the cold air switching unit 40 are arranged on the left side of the partition 45A in the frame member 45 so as to be adjacent to each other in the front-rear direction.

The cold air supply opening 41 is formed at the rear left side of the frame member 45, and communicates the supply space 56 </ b> A with the cold air side ventilation path 18. As shown in FIG. 5, the cold air supply opening 41 is adjacent to the hot air supply opening 36 in the left-right direction in the frame member 45.

The cold air exhaust opening 42 is formed on the left front side of the frame member 45 and communicates the exhaust space 57A and the cold air side ventilation path 18. As shown in FIG. 6, the cold air exhaust opening 42 is adjacent to the hot air exhaust opening 37 in the left-right direction in the frame member 45.

As described above, the frame member 45 is formed in an arc shape that bulges downward toward the central portion in the left-right direction, and the cold air supply opening 41 and the cold air exhaust opening 42 are formed on the left side of the frame member 45. Is open.

Therefore, the opening edges of the cold air supply opening 41 and the cold air exhaust opening 42 are formed so as to draw a downward arc as the distance from the left side of the housing 10 in which the evaporator 24 is disposed. That is, of the opening edges of the cold air supply opening 41 and the cold air exhaust opening 42, the portion located on the evaporator 24 side is located on the partition 45A side via the cold air supply opening 41 and the cold air exhaust opening 42. It faces the part to do. And the site | part located in the evaporator 24 side is located above the site | part located in the partition part 45A side regarding the up-down direction of the air conditioner 1. FIG.

Thereby, the opening areas of the cold air supply opening 41 and the cold air exhaust opening 42 are the opening areas when the cold air supply opening 41 and the like are formed so as to cross the cold air side ventilation path 18 in the left-right direction (that is, horizontally). Bigger than.

4 to 6, the evaporator 24 is arranged so that the longitudinal direction of the heat exchanging section 24A is along the front-rear direction. In the cold air switching unit 40, the cold air supply opening 41 and the cold air exhaust opening 42 are arranged side by side in the front-rear direction. In the first embodiment, the front-rear direction corresponds to the predetermined direction.

As a result, the air conditioner 1 sufficiently secures both the amount of air flowing into the cold air supply opening 41 and the amount of air flowing into the cold air exhaust opening 42 with respect to the air that has passed through the heat exchanger 24A of the evaporator 24. can do.

A supply slide door 46 is movably attached to the rear side of the frame member 45. The supply slide door 46 is formed in a plate shape larger than the opening areas of the hot air supply opening 36 and the cold air supply opening 41, and is curved along the arc of the frame member 45.

The supply slide door 46 is slidably mounted along the arc of the frame member 45 between a position where the hot air supply opening 36 is closed and a position where the cold air supply opening 41 is closed. .

Accordingly, the air conditioner 1 moves the supply slide door 46 to supply the air volume of the hot air WA flowing into the supply space 56A via the hot air supply opening 36 and the cold air supply opening 41. The air volume of the cold air CA flowing into the working space 56A can be adjusted. That is, the supply slide door 46 can adjust the ratio of the hot air WA and the cold air CA in the air supplied from the supply port 14 and functions as a supply-side air volume adjustment unit.

On the other hand, an exhaust slide door 47 is movably attached to the front side of the frame member 45. The exhaust slide door 47 is formed in a plate shape larger than the opening areas of the hot air exhaust opening 37 and the cold air exhaust opening 42, and is curved along the arc of the frame member 45.

The supply sliding door 46 is slidably mounted along the arc of the frame member 45 between a position where the hot air exhaust opening 37 is closed and a position where the cold air exhaust opening 42 is closed. .

Therefore, the air conditioner 1 moves the exhaust slide door 47 to exhaust the warm air WA flowing into the exhaust space 57A through the hot air exhaust opening 37 and the cold air exhaust opening 42 by moving the exhaust slide door 47. The air volume of the cold air CA flowing into the working space 57A can be adjusted. In other words, the exhaust slide door 47 can adjust the ratio of the warm air WA and the cool air CA in the air blown from the exhaust port 16 and functions as an exhaust air volume adjustment unit.

As shown in FIG. 4 and the like, a drive motor 50 is disposed inside the housing 10. The drive motor 50 is constituted by a so-called servo motor, and functions as a drive source for slidingly moving the supply slide door 46 and the exhaust slide door 47. The operation of the drive motor 50 is performed based on a control signal from the control unit 60.

A supply shaft 48 is connected to the drive shaft of the drive motor 50. The supply shaft 48 extends from the drive motor 50 toward the front side, and has two gear portions 48A. The supply shaft 48 is arranged so as to cross the upper side of the supply slide door 46 in the front-rear direction.

Further, two tooth portions 46A are arranged on the upper surface of the supply slide door 46 so as to extend in the left-right direction. The teeth 46A of the supply sliding door 46 are formed so as to mesh with the teeth in the gear 48A of the supply shaft 48, respectively.

Therefore, the power generated by the drive motor 50 is transmitted to the supply slide door 46 via the gear portion 48A and the tooth portion 46A. That is, the air conditioner 1 can slide the supply slide door 46 to an arbitrary position in the left-right direction by controlling the operation of the drive motor 50 by the control unit 60.

On the other hand, on the front side of the supply shaft 48, an exhaust shaft 49 is rotatably supported. The exhaust shaft 49 extends toward the front side so as to be parallel to the supply shaft 48 and has two gear portions 49A.

As shown in FIG. 4, a transmission gear portion 48B is disposed at the front end portion of the supply shaft 48 and meshes with a driven gear portion 49B disposed at the rear end portion of the exhaust shaft 49. It is configured as follows. Accordingly, the power generated by the drive motor 50 is transmitted to the exhaust shaft 49 as the supply shaft 48 rotates.

Further, two tooth portions 47A are arranged on the upper surface of the exhaust slide door 47 so as to extend in the left-right direction. The tooth portions 47A of the exhaust slide door 47 are formed so as to mesh with the gear portions 49A of the exhaust shaft 49, respectively.

Therefore, the power generated by the drive motor 50 is transmitted through the supply shaft 48 to rotate the exhaust shaft 49. As a result, the exhaust slide door 47 slides between the hot air exhaust opening 37 and the cold air exhaust opening 42. That is, the air conditioner 1 can slide the exhaust slide door 47 to an arbitrary position in the left-right direction by controlling the operation of the drive motor 50 by the control unit 60.

Further, according to the air conditioner 1, the power of the drive motor 50 can be transmitted to the supply slide door 46 and the exhaust slide door 47 via the supply shaft 48 and the exhaust shaft 49. Thereby, the air conditioner 1 can link the slide movement of the supply slide door 46 and the slide movement of the exhaust slide door 47.

As shown in FIG. 8 to FIG. 13, when the exhaust slide door 47 moves so that the opening area in the cold air exhaust opening 42 increases, the supply slide door 46 has an opening area in the hot air supply opening 36. Move to increase.

In this case, when the air volume ratio of the cold air CA in the air flowing into the exhaust space 57A increases, the air volume ratio of the hot air WA in the air flowing into the supply space 56A increases. The air conditioner 1 can supply mixed air MA, which is lower in temperature than the heating mode and higher in temperature than the cooling mode, to the air conditioning target space, and can realize an air mix mode from heating.

In addition, when the exhaust slide door 47 moves so that the opening area of the hot air exhaust opening 37 increases, the supply slide door 46 moves so that the opening area of the cold air supply opening 41 increases.

In this case, when the air volume ratio of the warm air WA in the air flowing into the exhaust space 57A increases, the air volume ratio of the cold air CA in the air flowing into the supply space 56A increases. The air conditioner 1 can supply the mixed air MA, which is lower in temperature than the heating mode and higher in temperature than the cooling mode, to the air conditioning target space, and can realize an air mix mode from cooling.

According to the air conditioner 1 according to the first embodiment configured as described above, air conditioning is performed using the warm air WA heated by the condenser 22 of the refrigeration cycle apparatus 20 or the cold air CA cooled by the evaporator 24. Air-conditioned air can be supplied to the sheet that is the target space.

And according to the air conditioner 1, the cooling mode, the heating mode, and the air mix mode can be realized by controlling the operation of the hot air switching unit 35 and the cold air switching unit 40. In the cooling mode, the air conditioner 1 can supply the cold air CA to the air-conditioning target space. In the heating mode, the air conditioner 1 can supply the hot air WA to the air-conditioning target space. In the air mix mode, the air conditioner 1 can supply the mixed air MA, the temperature of which is adjusted by mixing the cold air CA and the hot air WA, to the air conditioning target space.

Next, the control system of the air conditioner 1 according to the first embodiment will be described with reference to the drawings. As shown in FIG. 7, the air conditioner 1 has a control unit 60 for controlling the operation of the components of the air conditioner 1.

The control unit 60 includes a known microcomputer including a CPU, a ROM, a RAM, and the like and peripheral circuits thereof. And the control part 60 performs various arithmetic processing based on the control program memorize | stored in the ROM, and controls the action | operation of each component apparatus.

The compressor 21, the first blower 30, the second blower 31, and the drive motor 50 are connected to the output side of the control unit 60. Therefore, the control unit 60 adjusts the refrigerant discharge performance (for example, the refrigerant pressure) by the compressor 21, the blowing performance (for example, the blowing amount) of the first blower 30, and the blowing performance of the second blower 31 according to the situation. be able to.

In addition, the control unit 60 can adjust the air volume balance of the cold air CA and the hot air WA in the hot air switching unit 35 and the cold air switching unit 40 by controlling the operation of the drive motor 50. That is, the control unit 60 can change the operation mode in the air conditioner 1 to any one of the cooling mode, the heating mode, and the air mix mode.

A plurality of types of air conditioning sensors 61 are connected to the input side of the control unit 60. The air conditioning sensor includes a plurality of types of sensors used for controlling the air conditioning operation of the air conditioner 1, and includes a pressure sensor 62.

The pressure sensor 62 is a detection unit for detecting the refrigerant pressure on the low-pressure side of the cycle, and is disposed, for example, in the refrigerant pipe connected to the evaporator 24. Therefore, the control unit 60 can determine the magnitude of the load during the air-conditioning operation of the air conditioner 1 according to the magnitude of the low-pressure refrigerant pressure of the cycle detected by the pressure sensor 62, and the control corresponding to the magnitude It can be performed.

The air conditioning sensor 61 includes a suction temperature sensor, a hot air temperature sensor, a cold air temperature sensor, and the like. The suction temperature sensor detects the temperature of the air sucked through the hot air vent 12 and the cold air vent 13. The hot air temperature sensor detects the temperature of the air that has passed through the condenser 22 (that is, the hot air WA). The cold air temperature sensor detects the temperature of the air that has passed through the evaporator 24 (that is, the cold air CA).

The air conditioning sensor 61 includes, for example, a temperature sensor (evaporator temperature sensor) that detects the refrigerant temperature on the low pressure side of the cycle, a high pressure sensor that detects the refrigerant pressure on the high pressure side of the cycle, and a temperature that detects the temperature of the high pressure refrigerant. A sensor may be included. Then, an operation panel for instructing the operation of the air conditioner 1 may be connected to the input side of the control unit 60.

As described above, the air conditioner 1 according to the first embodiment can execute the cooling mode in which the cold air CA is supplied to the sheet that is the air-conditioning target space. Here, the operation of the air conditioner 1 in the cooling mode will be described with reference to FIGS.

In this cooling mode, the control unit 60 closes the hot air supply opening 36 with the supply slide door 46 and closes the cold air exhaust opening 42 with the exhaust slide door 47 so as to close the hot air switching unit 35. And the switching part 40 for cold air is controlled. That is, as shown in FIGS. 4 to 6, in the hot air switching unit 35, the hot air exhaust opening 37 is fully opened, and in the cold air switching unit 40, the cold air supply opening 41 is fully opened.

As shown in FIG. 5, when the first blower 30 is operated in this state, the first blower 30 sucks air from the supply space 56 </ b> A and supplies the air to the sheet that is the air-conditioning target space via the supply port 14. .

As described above, in the cooling mode, the hot air supply opening 36 is closed and the cold air supply opening 41 is opened. Therefore, as shown in FIG. 5, the first blower 30 sucks air from the cold air vent 13 and passes it through the heat exchange section 24 </ b> A of the evaporator 24.

At this time, the air is absorbed by the low-pressure refrigerant flowing inside the evaporator 24 and becomes cold air CA. The cold air CA that has passed through the evaporator 24 flows through the cold air side ventilation path 18 and flows into the supply space 56A from the cold air supply opening 41. The cold air CA is sucked from the supply space 56 </ b> A by the first blower 30 and supplied from the supply port 14 to the air-conditioning target space.

In this cooling mode, since the hot air supply opening 36 is closed by the supply slide door 46, the air on the warm air side ventilation path 17 side is supplied to the supply space 56 </ b> A by the operation of the first blower 30. Never be sucked into. That is, in this case, the first blower 30 does not cause the air flow of the hot air vent 12 → the condenser 22 → the hot air side ventilation path 17 → the hot air supply opening 36.

Therefore, in the cooling mode of the air conditioner 1, the cold air CA is generated by cooling the air blown by the first blower 30 by heat exchange with the low-pressure refrigerant in the evaporator 24. That is, the heat absorption amount of the refrigerant in the evaporator 24 of the refrigeration cycle apparatus 20 is greatly affected by the amount of air blown by the first blower 30. In other words, the air conditioner 1 can adjust the amount of heat absorbed by the refrigerant in the evaporator 24 by adjusting the amount of air blown from the first blower 30 in the cooling mode.

Further, when the second blower 31 is operated in the cooling mode, the second blower 31 sucks air from the exhaust space 57A below the second blower 31, and blows it outside the air-conditioning target space through the exhaust port 16.

As shown in FIG. 6, in the cooling mode, the hot air exhaust opening 37 is opened and the cold air exhaust opening 42 is closed. Accordingly, the second blower 31 sucks air from the hot air vent 12 and passes it through the heat exchanging portion 22 </ b> A of the condenser 22.

At this time, the air is heated by heat exchange with the high-pressure refrigerant flowing through the condenser 22 and becomes hot air WA. The warm air WA that has passed through the condenser 22 flows through the warm air side ventilation passage 17 and flows into the exhaust space 57A from the warm air exhaust opening 37. Then, the warm air WA is sucked from the exhaust space 57A by the second blower 31 and blown from the exhaust port 16 to the outside of the air-conditioning target space.

In this cooling mode, since the cold air exhaust opening 42 is closed by the exhaust slide door 47, the air on the cold air side ventilation path 18 side is sucked into the exhaust space 57A by the operation of the second blower 31. It will never be. That is, in this case, the second blower 31 does not cause an air flow of the cold air vent 13 → the evaporator 24 → the cold air side ventilation path 18 → the cold air exhaust opening 42.

Therefore, in the cooling mode of the air conditioner 1, the warm air WA is generated by heating the air blown by the second blower 31 with the heat of the high-pressure refrigerant in the condenser 22. That is, the amount of heat released from the refrigerant in the condenser 22 of the refrigeration cycle apparatus 20 is greatly affected by the amount of air blown by the second blower 31. In other words, the air conditioner 1 can adjust the heat radiation amount of the refrigerant in the condenser 22 by adjusting the air flow rate of the second blower 31 in the cooling mode.

Thus, the air conditioner 1 supplies the cold air CA cooled by the evaporator 24 from the supply port 14 to the air-conditioning target space by the first blower 30 and the hot air WA heated by the condenser 22. The second blower 31 can blow air from the exhaust port 16. In other words, the air conditioner 1 can realize a cooling mode in which the cold air CA is supplied to the seat that is the air-conditioning target space.

Then, according to the air conditioner 1, in the cooling mode, the amount of heat absorbed by the refrigerant in the evaporator 24 can be adjusted by adjusting the amount of air blown by the first blower 30, and the amount of air blown by the second blower 31 is adjusted. By doing so, the heat radiation amount of the refrigerant in the condenser 22 can be adjusted.

As a result, the air conditioner 1 can appropriately adjust the heat radiation amount of the refrigerant in the condenser 22 and the heat absorption amount of the refrigerant in the evaporator 24 in the cooling mode, and can easily balance the refrigeration cycle apparatus 20 in a stable manner. Can be activated.

In addition, the 1st air blower 30 in air_conditioning | cooling mode functions as a cooling air blower for ventilating the cold wind CA simultaneously with the supply air blower for supplying the conditioned air to the air conditioning target space. In other words, the first blower 30 sucks air through the evaporator 24 as at least one of the condenser 22 and the evaporator 24.

And the 2nd air blower 31 in this case is functioning as an air blower for exhausting air outside the air-conditioning object space, and at the same time as an air blower for warm air WA. In other words, the second blower 31 sucks air through the condenser 22 as at least the other of the condenser 22 and the evaporator 24.

Next, the operation of the air conditioner 1 in the heating mode will be described with reference to FIGS. In the heating mode, the control unit 60 closes the cold air supply opening 41 with the supply slide door 46 and closes the hot air exhaust opening 37 with the exhaust slide door 47 to switch the hot air switching unit 35 and The cool air switching unit 40 is controlled. That is, as shown in FIGS. 8 to 10, in the hot air switching section 35, the hot air supply opening 36 is fully opened, and in the cold air switching section 40, the cold air exhaust opening 42 is fully opened.

As shown in FIG. 9, when the first blower 30 is operated in this state, the first blower 30 sucks air from the supply space 56 </ b> A and supplies the air to the seat that is the air-conditioning target space via the supply port 14. .

As described above, in the heating mode, the cold air supply opening 41 is closed and the hot air supply opening 36 is opened. Therefore, as shown in FIG. 9, the first blower 30 sucks air from the hot air vent 12 and passes the heat exchange part 22 </ b> A of the condenser 22.

At this time, the air is heated by the heat of the high-pressure refrigerant flowing inside the condenser 22 and becomes hot air WA. The warm air WA that has passed through the condenser 22 flows through the warm air side ventilation path 17 and flows into the supply space 56 </ b> A from the warm air supply opening 36. The hot air WA is sucked from the supply space 56A by the first blower 30 and supplied from the supply port 14 to the air-conditioning target space.

In the heating mode, since the cold air supply opening 41 is closed by the supply slide door 46, the air on the cold air side ventilation path 18 side is sucked into the supply space 56A by the operation of the first blower 30. There is nothing. That is, in this case, the first air blower 30 does not cause an air flow of the cold air vent 13 → the evaporator 24 → the cold air side ventilation path 18 → the cold air supply opening 41.

Therefore, in the heating mode of the air conditioner 1, the warm air WA is generated by heating the air blown by the first blower 30 with the heat of the high-pressure refrigerant in the condenser 22. That is, the heat release amount of the refrigerant in the condenser 22 of the refrigeration cycle apparatus 20 is greatly affected by the amount of air blown by the first blower 30. In other words, the air conditioner 1 can adjust the heat radiation amount of the refrigerant in the condenser 22 by adjusting the air flow rate of the first blower 30 in the heating mode.

In addition, when the second blower 31 is operated in the heating mode, the second blower 31 sucks air from the exhaust space 57 </ b> A and blows it outside the air-conditioning target space through the exhaust port 16. As shown in FIG. 10, in the heating mode, the cold air exhaust opening 42 is opened, and the hot air exhaust opening 37 is closed. Accordingly, the second blower 31 sucks air from the cold air vent 13 and passes it through the heat exchanging portion 24 </ b> A of the evaporator 24.

In this case, the air is absorbed by the low-pressure refrigerant flowing through the evaporator 24 and becomes cold air CA. The cold air CA that has passed through the evaporator 24 flows through the cold air side ventilation path 18 and flows into the exhaust space 57A from the cold air exhaust opening 42. Then, the cold air CA is sucked from the exhaust space 57A by the second blower 31 and is blown from the exhaust port 16 to the outside of the air conditioning target space.

In this heating mode, since the warm air exhaust opening 37 is closed by the exhaust slide door 47, the air on the warm air side ventilation path 17 side is exhausted by the operation of the second blower 31. Never be sucked into. That is, in this case, the second air blower 31 does not cause the air flow of the hot air vent 12 → the condenser 22 → the hot air side ventilation path 17 → the hot air exhaust opening 37.

Therefore, in the heating mode of the air conditioner 1, the cold air CA is generated by absorbing the air blown by the second blower 31 with the low-pressure refrigerant in the evaporator 24. That is, the heat absorption amount of the refrigerant in the evaporator 24 of the refrigeration cycle apparatus 20 is greatly affected by the amount of air blown by the second blower 31. In other words, the air conditioner 1 can adjust the heat absorption amount of the refrigerant in the evaporator 24 by adjusting the amount of air blown by the second blower 31 in the heating mode.

Thus, the air conditioner 1 supplies the warm air WA heated by the condenser 22 from the supply port 14 to the air-conditioning target space by the first blower 30, and the cool air CA cooled by the evaporator 24, The second blower 31 can blow air from the exhaust port 16. In other words, the air conditioner 1 can realize a heating mode in which the hot air WA is supplied to a seat that is a space to be air-conditioned.

And according to the air conditioner 1, in the heating mode, by adjusting the air flow rate of the first blower 30, the heat release amount of the refrigerant in the condenser 22 can be adjusted, and the air flow rate of the second blower 31 is adjusted. By doing so, the heat absorption amount of the refrigerant in the evaporator 24 can be adjusted.

Thus, the air conditioner 1 can appropriately adjust the amount of heat released from the refrigerant in the condenser 22 and the amount of heat absorbed from the refrigerant in the evaporator 24 during the heating mode. Can be activated.

Note that the first blower 30 in the heating mode is a supply blower for supplying conditioned air to the air-conditioning target space, and also functions as a hot air blower for blowing the hot air WA. That is, the first blower 30 sucks air through the condenser 22 as at least one of the condenser 22 and the evaporator 24.

And the 2nd air blower 31 in this case is functioning as an air blower for exhaust_gas | exhaustion for ventilating the exterior of an air-conditioning object space, and at the same time as an air blower for cool air CA. That is, the second blower 31 sucks air through the evaporator 24 as at least the other of the condenser 22 and the evaporator 24.

Subsequently, the operation of the air conditioner 1 in the air mix mode will be described with reference to FIGS. The air mix mode is an operation mode in which the mixed air MA obtained by mixing the hot air WA and the cold air CA is supplied to the air conditioning target space.

In the air mix mode, the control unit 60 controls the position of the supply sliding door 46 so as to secure the opening area of the hot air supply opening 36 and the opening area of the cold air supply opening 41. At the same time, the control unit 60 controls the position of the exhaust sliding door 47 so that the opening area of the hot air exhaust opening 37 and the opening area of the cold air exhaust opening 42 are secured.

As shown in FIG. 12, when the first blower 30 is operated in this state, the first blower 30 sucks air from the supply space 56 </ b> A and supplies the air to the seat that is the air-conditioning target space via the supply port 14. .

In the air mix mode, the opening area is secured for both the hot air supply opening 36 and the cold air supply opening 41. Therefore, as shown in FIG. 12, the first blower 30 sucks air from the hot air vent 12 and passes the heat exchange part 22A of the condenser 22, and simultaneously sucks air from the cold air vent 13. The heat exchanger 24A of the evaporator 24 is passed through.

As described above, the air passing through the condenser 22 is heated by the heat of the high-pressure refrigerant flowing inside the condenser 22 and becomes hot air WA. The warm air WA that has passed through the condenser 22 flows through the warm air side ventilation path 17 and flows into the supply space 56 </ b> A from the warm air supply opening 36.

On the other hand, the air passing through the evaporator 24 is absorbed by the low-pressure refrigerant flowing through the evaporator 24 and becomes cold air CA. The cold air CA flows out of the evaporator 24 to the cold air side ventilation path 18 and flows into the supply space 56A from the cold air supply opening 41.

That is, in the air mix mode, the hot air WA and the cold air CA flow into and mix with the supply space 56A. Then, the air inside the supply space 56A is sucked in by the first blower 30 and supplied from the supply port 14 to the air-conditioning target space as the mixed air MA.

As described above, the supply sliding door 46 can adjust the opening area of the hot air supply opening 36 and the opening area of the cold air supply opening 41. In other words, the supply sliding door 46 can adjust the air volume ratio of the hot air WA and the cold air CA flowing into the supply space 56 </ b> A so that the mixed air MA can be supplied from the supply port 14.

That is, the air conditioner 1 can appropriately adjust the temperature of the conditioned air (that is, the mixed air MA) supplied to the air-conditioning target space by adjusting the position of the supply slide door 46 in the air mix mode. it can.

Then, when the second blower 31 is operated in the air mix mode, the second blower 31 sucks air from the exhaust space 57 </ b> A as in the above-described cooling mode and the like, and the air-conditioning target space via the exhaust port 16. To the outside.

As shown in FIG. 13, in the air mix mode, the opening area is secured for both the hot air exhaust opening 37 and the cold air exhaust opening 42. Accordingly, the second blower 31 sucks air from the hot air vent 12 and passes it through the heat exchanging portion 22A of the condenser 22, and simultaneously sucks air from the cool air vent 13 and heat exchanging portion of the evaporator 24. Pass 24A.

Then, the warm air WA that has passed through the condenser 22 flows through the warm air side ventilation path 17 and flows into the exhaust space 57A from the warm air exhaust opening 37. Similarly, the cold air CA that has passed through the evaporator 24 flows through the cold air side ventilation path 18 and flows into the exhaust space 57A from the cold air exhaust opening 42.

Therefore, in the air mix mode, the hot air WA and the cold air CA flow into and mix with the exhaust space 57A. Then, the air inside the exhaust space 57A is sucked in by the second blower 31 and is blown out from the exhaust port 16 to the outside of the air conditioning target space as the mixed air MA.

As described above, the exhaust sliding door 47 can adjust the opening area of the hot air exhaust opening 37 and the opening area of the cold air exhaust opening 42. In other words, the exhaust slide door 47 can adjust the air volume ratio of the warm air WA and the cool air CA flowing into the exhaust space 57A so that the mixed air MA can be blown from the exhaust port 16.

Here, in the air conditioner 1, the control unit 60 is configured to control the operation of the compressor 21 according to the level of the air conditioning load detected by the pressure sensor 62 of the air conditioning sensor 61 or the like. In the conventional air conditioner, when such an air conditioning load is low, the operation and the operation stop of the electric motor constituting the compressor 21 are controlled to be repeated periodically.

In the refrigeration cycle apparatus 20, the refrigerant circulates by the operation of the compressor 21, and the refrigerant contains refrigeration oil. For this reason, when the control is performed such that the operation and stoppage of the compressor 21 are periodically repeated at low load, it is assumed that the refrigerating machine oil returning to the compressor 21 due to the circulation of the refrigerant becomes insufficient. The

In this regard, the air conditioner 1 performs an air mix mode as shown in FIGS. 11 to 13 when the air conditioning load is low. By operating the air conditioner 1 in the air mix mode, the minimum number of rotations of the electric motor of the compressor 21 can be maintained above a predetermined reference.

That is, when the air conditioning load is low, the air conditioner 1 can keep the circulating amount of the refrigerant in the refrigeration cycle apparatus 20 at or above a predetermined reference by setting the air mix mode. Thereby, the air conditioner 1 can ensure the return amount (that is, oil return) of the refrigeration oil to the compressor 21 even in the case of a low load.

Also, in this case, the air conditioner 1 air-conditions the air-conditioning target space while maintaining the minimum number of rotations of the electric motor at or above a predetermined reference by setting the air mix mode. That is, the air conditioner 1 does not periodically repeat the operation and stoppage of the electric motor of the compressor 21, and can reduce vibration caused by the ON / OFF control of the compressor 21.

As described above, the air conditioner 1 according to the first embodiment includes the vapor compression refrigeration cycle apparatus 20, the first blower 30, the second blower 31, and the temperature as shown in FIGS. The wind switching unit 35 and the cold wind switching unit 40 are configured to be housed in the housing 10.

As shown in FIGS. 4 to 6, in the air conditioner 1, the hot air WA heated by the condenser 22 is blown to the outside of the air-conditioning target space by the hot air switching unit 35, and at the same time by the cold air switching unit 40. The cold air CA cooled by the evaporator 24 can be supplied to the air-conditioning target space. That is, the air conditioner 1 can realize a cooling mode for cooling the air-conditioning target space with a configuration in which constituent devices such as the refrigeration cycle device 20 are accommodated in the housing 10 in a compact manner.

Further, as shown in FIGS. 8 to 10, the air conditioner 1 supplies the hot air WA heated by the condenser 22 to the air-conditioning target space by the hot air switching unit 35 and also by the cold air switching unit 40. The cold air cooled by the evaporator 24 can be blown out of the air-conditioning target space. That is, the air conditioner 1 can realize a heating mode in which the air conditioning target space is heated with a configuration in which the components of the refrigeration cycle apparatus 20 are accommodated in the housing 10 in a compact manner.

And according to the air conditioner 1, since the ventilation capability of the 1st air blower 30 and the 2nd air blower 31 can be adjusted separately, the thermal radiation amount of the refrigerant | coolant in the condenser 22 of the refrigeration cycle apparatus 20, and the refrigerant | coolant in the evaporator 24 The endothermic amount of each can be adjusted appropriately. As a result, the air conditioner 1 can easily balance the refrigeration cycle apparatus 20 and can be operated stably.

As shown in FIGS. 4 to 13, in the housing 10 of the air conditioner 1, the first blower 30 and the second blower 31 are heat exchangers (that is, a condenser 22 or an evaporator) with respect to the flow of blown air. 24) on the downstream side. For this reason, according to the air conditioner 1, the degree of freedom in design can be increased with respect to the arrangement of the first blower 30 and the second blower 31 inside the casing 10, and the size of the air conditioner 1 (that is, the casing 10) can be increased. Increase in size) can be suppressed.

And in the air conditioner 1 which concerns on 1st Embodiment, as shown to FIG. 6, FIG. 9, etc., the switching part 35 for warm air is 1st in the downstream rather than the condenser 22 regarding the flow of warm air WA. Arranged upstream of the blower 30 and the second blower 31. Further, as shown in FIGS. 5, 10, and the like, the cool air switching unit 40 is disposed downstream of the evaporator 24 and upstream of the first blower 30 and the second blower 31 with respect to the flow of the cool air CA. ing.

As a result, the air conditioner 1 allows components such as the condenser 22, the evaporator 24, the first blower 30, the second blower 31, the hot air switching unit 35, and the cold air switching unit 40 to be connected to the inside of the housing 10. And can be accommodated compactly.

Also, as shown in FIGS. 2 to 6 and the like, in the air conditioner 1, the condenser 22 and the evaporator 24 are arranged in the housing 10 with a space in the left-right direction. The hot air switching unit 35 is disposed on the right side of the condenser 22 between the condenser 22 and the evaporator 24, and the cold air switching unit 40 is disposed between the condenser 22 and the evaporator 24. It is arranged on the left side of the evaporator 24 side.

As a result, according to the air conditioner 1, the switching of the hot air WA flow by the hot air switching unit 35 and the switching of the cold air CA flow by the cold air switching unit 40 are surely realized, and each component device is mounted. The body 10 can be accommodated compactly.

As shown in FIGS. 4 to 6 and the like, the condenser 22 is arranged so that the longitudinal direction of the heat exchanging portion 22A is the front-rear direction. The hot air switching unit 35 has a hot air supply opening 36 and a hot air exhaust opening 37, and the hot air supply opening 36 and the hot air exhaust opening 37 are connected to the hot air side ventilation. In the path 17, they are arranged side by side in the front-rear direction.

Thereby, according to the air conditioner 1, regarding the flow of the warm air WA that has passed through the heat exchange part 22A of the condenser 22, the ventilation resistance when passing through the warm air supply opening 36 and the warm air exhaust opening 37 is reduced. However, the air volume of the warm air WA that can pass through each of them can be secured.

And the evaporator 24 is arrange | positioned so that the longitudinal direction of the heat exchange part 24A may turn into the front-back direction. The cold air switching unit 40 includes a cold air supply opening 41 and a cold air exhaust opening 42, and the cold air supply opening 41 and the cold air exhaust opening 42 are arranged in the front-rear direction in the cold air side ventilation path 18. Are arranged side by side.

Thereby, according to the air conditioner 1, with respect to the flow of the cold air CA that has passed through the heat exchange unit 24A of the evaporator 24, while reducing the ventilation resistance when passing through the cold air supply opening 41 and the cold air exhaust opening 42, The air volume of the cool air CA that can pass through each of them can be secured.

In addition, the air conditioner 1 according to the first embodiment includes a supply slide door 46 and an exhaust slide door 47 that are slidably mounted by the power of the drive motor 50. The supply slide door 46 adjusts the air volume ratio of the hot air WA and the cold air CA with respect to the air supplied from the supply port 14 to the air-conditioning target space. The exhaust slide door 47 adjusts the air volume ratio of the hot air WA and the cold air CA with respect to the air blown from the exhaust port 16 to the outside of the air-conditioning target space.

11 to 13, the air conditioner 1 moves the supply slide door 46 to a position where the opening area in the hot air supply opening 36 and the opening area in the cold air supply opening 41 are secured. Can do. Thereby, the air conditioner 1 can supply the mixed air MA obtained by mixing the hot air WA and the cold air CA from the supply port 14 to the air-conditioning target space.

In addition, the air conditioner 1 moves the exhaust slide door 47 to a position where the opening area in the hot air exhaust opening 37 and the opening area in the cold air exhaust opening 42 are secured, so that the outside of the air conditioning target space is moved. The mixed air MA can be blown from the exhaust port 16.

The air conditioner 1 can maintain the minimum rotational speed of the compressor 21 at a predetermined reference or higher by setting the above-described air mix mode to supply the mixed air MA when the air conditioning load is low.

Thus, in the refrigeration cycle apparatus 20 of the air conditioner 1, even when the air conditioning load is low, refrigerant exceeding a predetermined standard circulates, and therefore, oil return to the compressor 21 can be ensured.

Further, according to the air conditioner 1, when the air conditioning load is low, the air mixing mode as shown in FIG. 11 to FIG. 13 is set so that the refrigerant discharge capacity according to the air conditioning load is obtained. Driving can be continued. That is, since the air conditioner 1 does not periodically repeat the operation and the operation stop of the compressor 21, it is possible to suppress the occurrence of vibration due to this.

In the air conditioner 1, the supply slide door 46 and the exhaust slide door 47 are configured to move by transmitting the power of the drive motor 50 through the supply shaft 48 and the exhaust shaft 49. That is, the movement of the exhaust slide door 47 is interlocked with the movement of the supply slide door 46 via the exhaust shaft 49.

Therefore, when the exhaust slide door 47 moves so as to increase the opening area of the cold air exhaust opening 42, the supply slide door 46 is interlocked with the opening area of the hot air supply opening 36. Move to increase

As a result, according to the air conditioner 1, in the air mix mode, the mixed air MA supplied from the supply port 14 in conjunction with increasing the air volume ratio of the cold air CA in the mixed air MA blown from the exhaust port 16. The air volume ratio of the warm air WA can be increased.

When the exhaust slide door 47 moves so as to increase the opening area of the hot air exhaust opening 37, the supply slide door 46 interlocks with the opening area of the cold air supply opening 41. Move to increase.

Thereby, according to the air conditioner 1, in the air mix mode, the mixed air supplied from the supply port 14 in conjunction with increasing the air volume ratio of the warm air WA in the mixed air MA blown from the exhaust port 16. The air volume ratio of the cold air CA in the MA can be increased.

(Second Embodiment)
Next, a second embodiment different from the first embodiment described above will be described with reference to the drawings. As with the first embodiment, the air conditioner 1 according to the second embodiment includes components such as the refrigeration cycle apparatus 20, the first blower 30, the second blower 31, the hot air switching unit 35, and the cold air switching unit 40. Are arranged inside the housing 10.

In the air conditioner 1 according to the second embodiment, the arrangement of the condenser 22 and the evaporator 24, the first blower 30, the second blower 31, the hot air switching unit 35, and the cool air for the first embodiment. The positional relationship of the switching unit 40 is different.

Since other points in the second embodiment are the same as those in the first embodiment, the description thereof will be omitted, and differences from the first embodiment will be described in detail. And in the following description, the same code | symbol as 1st Embodiment shows the same structure, Comprising: The previous description is referred.

As shown in FIG. 14, the air conditioner 1 according to the second embodiment includes a vapor compression refrigeration cycle apparatus 20 inside the housing 10, as in the first embodiment. The refrigeration cycle apparatus 20 includes a compressor 21, a condenser 22, a decompression unit 23, an evaporator 24, and an accumulator 25.

As shown in FIGS. 14 to 16, in the condenser 22 according to the second embodiment, the heat exchanging portion 22A configured in a flat plate is inclined with respect to the bottom surface 15A of the casing below the hot air vent 12. Are arranged to be.

Specifically, the heat exchanging portion 22A of the condenser 22 is inclined so as to be positioned upward as it goes toward the center in the left-right direction. The condenser 22 is arranged so that the longitudinal direction of the heat exchange part 22A is the front-rear direction. The space extending below the inclined heat exchanging portion 22A constitutes the warm air side ventilation path 17 through which the warm air WA heated by the condenser 22 circulates.

In addition, the evaporator 24 according to the second embodiment is disposed below the cold air vent 13 so that the heat exchanging portion 24 </ b> A configured in a flat plate shape is inclined with respect to the main body case 15. The heat exchanging part 24A of the evaporator 24 is inclined so as to be positioned upward as it goes toward the center in the left-right direction. It arrange | positions so that it may become symmetrical with 22A.

And the evaporator 24 is arrange | positioned so that the longitudinal direction of 24 A of heat exchange parts may become the front-back direction. The space extending below the inclined heat exchanging portion 24 </ b> A constitutes the cold air side ventilation path 18 through which the cold air CA cooled by the evaporator 24 flows. The cold air side ventilation path 18 is configured to be symmetric with the warm air side ventilation path 17 via the partition portion 45A.

In the air conditioner 1 according to the second embodiment, the first blower 30 is configured by a so-called cross flow fan, and is disposed inside the warm air side ventilation path 17. The first blower 30 has a cylindrical impeller that extends along the front-rear direction on the right side of the partition 45A, and blows air by rotating the impeller with an electric motor.

And the 2nd air blower 31 which concerns on 2nd Embodiment is comprised by the crossflow fan similarly to the 1st air blower 30, and is arrange | positioned inside the cold wind side ventilation path 18. FIG. The second blower 31 has a cylindrical impeller extending along the front-rear direction on the left side of the partition 45A, and blows air by rotating the impeller with an electric motor.

As shown in FIGS. 14 to 16, the frame member 45 according to the second embodiment is disposed between the condenser 22 and the evaporator 24 that are spaced apart in the left-right direction inside the housing 10. The hot air switching unit 35 and the cold air switching unit 40 are configured.

Unlike 1st Embodiment, the frame member 45 is arrange | positioned above the 1st air blower 30 and the 2nd air blower 31, and is formed in the circular arc shape expanded upward regarding the cross section perpendicular | vertical to the front-back direction. .

The hot air supply opening 36 and the hot air exhaust opening 37 are formed in the right side portion of the frame member 45 so as to be aligned in the front-rear direction. The hot air supply opening 36 and the hot air exhaust opening 37 are located above the first blower 30 and constitute a hot air switching unit 35.

As shown in FIGS. 15 and 16, the frame member 45 is formed in an arc shape that swells upward as it goes toward the center in the left-right direction. Therefore, the opening edges of the hot air supply opening 36 and the hot air exhaust opening 37 are formed so as to draw an upward arc as the distance from the right side of the housing 10 in which the condenser 22 is disposed.

That is, in the second embodiment, of the opening edges of the hot air supply opening 36 and the hot air exhaust opening 37, the portions located on the condenser 22 side are the hot air supply opening 36 and the hot air exhaust opening 37. It faces the part located in the division part 45A side. And the site | part located in the condenser 22 side is located below the site | part located in the partition part 45A side regarding the up-down direction of the air conditioner 1. FIG.

Thereby, also in the second embodiment, the hot air supply opening 36 and the hot air exhaust opening 37 have the opening areas such that the hot air supply passage 17 crosses the hot air side ventilation path 17 in the left-right direction (ie, horizontal). It becomes larger than the opening area when the opening 36 for use is formed.

On the other hand, the cold air supply opening 41 and the cold air exhaust opening 42 are formed in the left part of the frame member 45 so as to be adjacent in the front-rear direction. The cold air supply opening 41 and the cold air exhaust opening 42 are located above the second blower 31 and constitute the cold air switching unit 40.

Since the frame member 45 according to the second embodiment is formed in an arc shape that swells upward, the opening edges of the cold air supply opening 41 and the cold air exhaust opening 42 are housings in which the evaporator 24 is disposed. The distance from the left side of 10 is such that an upward arc is drawn.

Therefore, in the second embodiment, among the opening edges of the cold air supply opening 41 and the cold air exhaust opening 42, the part located on the evaporator 24 side is connected via the cold air supply opening 41 and the cold air exhaust opening 42. It faces the part located on the partition 45A side. And the site | part located in the evaporator 24 side is located above the site | part located in the partition part 45A side regarding the up-down direction of the air conditioner 1. FIG.

Accordingly, also in the second embodiment, the opening area of the cold air supply opening 41 and the cold air exhaust opening 42 has the cold air supply opening 41 and the like so as to cross the cold air side ventilation path 18 in the left-right direction (ie, horizontal). It becomes larger than the opening area when forming.

In the second embodiment as well, the supply slide door 46 and the exhaust slide door 47 are slidably attached to the frame member 45. Similarly to the first embodiment, the supply slide door 46 slides in the left-right direction between the hot air supply opening 36 and the cold air supply opening 41 by the operation of the drive motor 50.

The exhaust slide door 47 is slid in the left-right direction between the hot air exhaust opening 37 and the cold air exhaust opening 42 by the operation of the drive motor 50. Since these points have already been described in the first embodiment, description thereof will be omitted.

Next, the operation in the cooling mode of the air conditioner 1 according to the second embodiment will be described with reference to FIGS.

In the cooling mode according to the second embodiment, the control unit 60 closes the warm air supply opening 36 with the supply slide door 46 and closes the cold air exhaust opening 42 with the exhaust slide door 47. The wind switching unit 35 and the cold wind switching unit 40 are controlled. That is, as shown in FIGS. 15 and 16, in the hot air switching unit 35, the hot air exhaust opening 37 is fully opened, and in the cold air switching unit 40, the cold air supply opening 41 is fully opened.

When the first blower 30 is operated in this state, the first blower 30 sucks air from the hot air vent 12 through the condenser 22 and blows air toward the upper side of the housing 10. In the warm air switching unit 35 in the cooling mode, the warm air supply opening 36 is closed, and the warm air exhaust opening 37 is opened.

Therefore, as shown in FIGS. 15 and 16, the warm air WA heated by the condenser 22 is air-conditioned from the exhaust port 16 through the warm air exhaust opening 37 by the operation of the first blower 30. It is blown outside the space.

That is, in the cooling mode in the second embodiment, the flow of the hot air WA is as follows: the hot air vent 12 → the condenser 22 → the first blower 30 → the hot air exhaust opening 37 (the hot air switching unit 35) → the exhaust. The order of mouth 16. Therefore, the air conditioner 1 according to the second embodiment can adjust the heat radiation amount of the refrigerant in the condenser 22 by adjusting the air volume of the first blower 30 in the cooling mode.

On the other hand, when the second air blower 31 is operated in this cooling mode, the second air blower 31 sucks air from the cold air vent 13 through the evaporator 24 and blows air toward the upper side of the housing 10. As described above, in the cool air switching unit 40 in the cooling mode, the cold air supply opening 41 is opened, and the cold air exhaust opening 42 is closed. As a result, the cold air CA cooled by the evaporator 24 is supplied to the air conditioning target space from the supply port 14 through the cold air supply opening 41 by the operation of the second blower 31.

That is, in the cooling mode according to the second embodiment, the flow of the cold air CA flows from the cold air vent 13 → the evaporator 24 → the second blower 31 → the cold air supply opening 41 (the cold air switching unit 40) → the supply port 14. In order. Therefore, the air conditioner 1 according to the second embodiment can adjust the heat absorption amount of the refrigerant in the evaporator 24 by adjusting the air flow rate of the second blower 31 in the cooling mode.

The air conditioner 1 according to the second embodiment supplies the cold air CA cooled by the evaporator 24 from the supply port 14 to the air-conditioning target space by the second blower 31 and the hot air WA heated by the condenser 22. Can be blown from the exhaust port 16 by the first blower 30. That is, the air conditioner 1 can realize a cooling mode in which the cold air CA is supplied to the air conditioning target space.

And according to the air conditioner 1 which concerns on 2nd Embodiment, in the air_conditioning | cooling mode, by adjusting the ventilation volume of the 1st air blower 30, the thermal radiation amount of the refrigerant | coolant in the condenser 22 can be adjusted, and a 2nd air blower By adjusting the blown amount of 31, the heat absorption amount of the refrigerant in the evaporator 24 can be adjusted.

Thereby, the air conditioner 1 according to the second embodiment can appropriately adjust the heat radiation amount of the refrigerant in the condenser 22 and the heat absorption amount of the refrigerant in the evaporator 24 in the cooling mode. Easy to balance and stable operation.

In the second embodiment, the first blower 30 in the cooling mode is a hot air blower for blowing the hot air WA, and at the same time functions as an exhaust blower for blowing air outside the air-conditioning target space. ing. Moreover, the 2nd air blower 31 in this case functions as a supply air blower for supplying air-conditioning air to air-conditioning object space simultaneously with the air blower for cold air for air-cooling the cold air CA.

Subsequently, an operation in the heating mode of the air conditioner 1 according to the second embodiment will be described with reference to FIGS. 17 and 18.

In the heating mode according to the second embodiment, the control unit 60 closes the hot air exhaust opening 37 with the supply slide door 46 and closes the cold air supply opening 41 with the exhaust slide door 47. The wind switching unit 35 and the cold wind switching unit 40 are controlled. That is, as shown in FIGS. 17 and 18, in the hot air switching unit 35, the hot air supply opening 36 is fully opened, and in the cold air switching unit 40, the cold air exhaust opening 42 is fully opened.

When the first blower 30 is operated in this state, the first blower 30 sucks air from the hot air vent 12 through the condenser 22 and blows air toward the upper side of the housing 10. Therefore, the warm air WA heated by the condenser 22 is air-conditioned from the supply port 14 through the warm air supply opening 36 by the operation of the first blower 30 as shown in FIGS. Supplied to the space.

That is, in the heating mode in the second embodiment, the flow of the hot air WA is as follows: the hot air vent 12 → the condenser 22 → the first blower 30 → the hot air supply opening 36 (hot air switching unit 35) → supply. It becomes the order of the mouth 14. Therefore, the air conditioner 1 according to the second embodiment can adjust the heat radiation amount of the refrigerant in the condenser 22 by adjusting the air volume of the first blower 30 in the heating mode.

On the other hand, when the second blower 31 is operated in this heating mode, the second blower 31 sucks air from the cold air vent 13 through the evaporator 24 and blows air upwards of the housing 10. As a result, as shown in FIG. 18, the cold air CA cooled by the evaporator 24 is blown from the exhaust port 16 to the outside of the air conditioning target space through the cold air exhaust opening 42 by the operation of the second blower 31. The

That is, in the heating mode according to the second embodiment, the flow of the cold air CA flows from the cold air vent 13 → the evaporator 24 → the second blower 31 → the cold air exhaust opening 42 (the cool air switching unit 40) → the exhaust port 16. In order. As a result, the air conditioner 1 according to the second embodiment can adjust the amount of heat absorbed by the refrigerant in the evaporator 24 by adjusting the amount of air blown by the second blower 31 in the heating mode.

The air conditioner 1 according to the second embodiment blows the cold air CA cooled by the evaporator 24 from the exhaust port 16 by the second blower 31 and the hot air WA heated by the condenser 22 for the first time. The air can be supplied from the supply port 14 to the air-conditioning target space by the blower 30. That is, the air conditioner 1 can realize a heating mode in which the hot air WA is supplied to the air-conditioning target space.

And according to the air conditioner 1 which concerns on 2nd Embodiment, also in heating mode, the ventilation volume of the 1st air blower 30 can be adjusted, the heat dissipation of the refrigerant | coolant in the condenser 22 can be adjusted, and the 2nd air blower By adjusting the blown amount of 31, the heat absorption amount of the refrigerant in the evaporator 24 can be adjusted.

Thereby, the air conditioner 1 according to the second embodiment can appropriately adjust the heat release amount of the refrigerant in the condenser 22 and the heat absorption amount of the refrigerant in the evaporator 24 in the heating mode. Easy to balance and stable operation.

In the second embodiment, the first blower 30 in the heating mode is a hot air blower for blowing the hot air WA, and at the same time functions as a supply blower for supplying the conditioned air to the air-conditioned space. is doing. Further, the second blower 31 in this case functions as a cool air blower for sending the cool air CA and at the same time as an exhaust blower for sending the air outside the air-conditioning target space.

In the air conditioner 1 according to the second embodiment, the supply slide door 46 and the exhaust slide door 47 are each slid in the left-right direction by the power of the drive motor 50 with the same configuration as in the first embodiment. Arranged to be possible.

Therefore, the air conditioner 1 according to the second embodiment can also realize the air mix mode, as in the first embodiment, to ensure oil return when the air conditioning load is low, and to turn on the compressor 21- Vibration due to OFF operation can be suppressed.

As described above, according to the air conditioner 1 according to the second embodiment, the same effects as those obtained from the first embodiment can be obtained in the same manner as in the first embodiment. .

And in the air conditioner 1 which concerns on 2nd Embodiment, as shown to FIG. 16, FIG. 17, the switching part 35 for warm air is the condenser 22, the 1st air blower 30, and the 2nd air blower regarding the flow of the warm air WA. It is arranged downstream of 31. As shown in FIGS. 15 and 18, the cold air switching unit 40 is disposed downstream of the evaporator 24, the first blower 30, and the second blower 31 with respect to the flow of the cold air CA.

That is, in the air conditioner 1 according to the second embodiment, the positions of the first blower 30, the second blower 31, the hot air switching unit 35, and the cold air switching unit 40 are located downstream of the condenser 22 and the evaporator 24. Even when the relationship is different from that of the first embodiment, the constituent devices can be accommodated in the housing 10 in a compact manner.

The present disclosure is not limited to the above-described embodiment, and various modifications can be made as follows without departing from the spirit of the present disclosure.

In the above-described embodiment, the air conditioner 1 is applied to a seat air conditioner that uses a seat as an air-conditioning target space, but is not limited to this mode. If the refrigeration cycle device 20, the first blower 30, the second blower 31, the hot air switching unit 35, and the cold air switching unit 40 are accommodated in the housing 10 as the constituent devices in the air conditioner 1 described above, It can also be configured to be used for other purposes.

In the above-described embodiment, the casing 10 of the air conditioner 1 is configured in a rectangular parallelepiped shape that can be disposed between the seat surface portion of the seat and the passenger compartment floor surface. However, the present invention is not limited to this aspect. Absent. About the external appearance shape etc. of the housing | casing 10, it is possible to change suitably according to a condition.

In the above-described embodiment, the air blowing capacity of the first air blower 30 and the second air blower 31 is adjusted by changing the number of rotations of each electric motor by a control signal from the control unit 60, but is limited to this aspect. Is not to be done. By adopting a fan having different performance as the first fan 30 and the second fan 31, it is possible to adjust the blowing capacity.

And in embodiment mentioned above, although the refrigerating-cycle apparatus 20 was the structure which has the accumulator 25, it is not limited to this aspect. The refrigeration cycle apparatus 20 should just comprise the refrigerating cycle which has the compressor 21, the condenser 22, the pressure reduction part 23, and the evaporator 24 at least.

Although the present disclosure has been described based on an embodiment, it is understood that the present disclosure is not limited to the embodiment or the structure. The present disclosure includes various modifications and modifications within the equivalent range. In addition, various combinations and forms, as well as other combinations and forms including only one element, more or less, are within the scope and spirit of the present disclosure.

Claims (9)

1. A housing (10);
   A compressor (21) that compresses and discharges the refrigerant, a condenser (22) that radiates heat from the high-pressure refrigerant discharged from the compressor and heats the air, and a decompression unit that depressurizes the refrigerant flowing out of the condenser (23) and an evaporator (24) that evaporates the low-pressure refrigerant decompressed by the decompression unit and cools the air, and a refrigeration cycle device (20) housed inside the casing;
   A first blower (30) for blowing air sucked through at least one of the condenser and the evaporator inside the casing;
   A second blower (31) for blowing air sucked through at least the other of the condenser and the evaporator inside the housing;
   Concerning the flow of warm air (WA) consisting of air heated when passing through the condenser, a ventilation path for guiding the warm air to the air-conditioning target space and a ventilation path for guiding the warm air to the outside of the air-conditioning target space A hot air switching unit (35) for switching between
   Concerning the flow of cold air (CA) consisting of air cooled when passing through the evaporator, a ventilation path for guiding the cold air to the air-conditioning target space and a ventilation path for guiding the cold air to the outside of the air-conditioning target space An air conditioner having a cold air switching unit (40) for switching.
2. The hot air switching unit is arranged downstream of the condenser and upstream of the first blower and the second blower with respect to the flow of the hot air,
   2. The air conditioner according to claim 1, wherein the cold air switching unit is disposed downstream of the evaporator and upstream of the first blower and the second blower with respect to the flow of the cold air.
3. The hot air switching unit is disposed downstream of the condenser, the first blower, and the second blower with respect to the flow of the hot air,
   2. The air conditioner according to claim 1, wherein the cold air switching unit is disposed downstream of the evaporator, the first blower, and the second blower with respect to the flow of the cold air.
4. The condenser and the evaporator are arranged at intervals in the inside of the housing,
   The hot air switching unit is disposed on the condenser side between the condenser and the evaporator,
   4. The cold air switching unit is disposed between the condenser and the evaporator, on the evaporator side, and adjacent to the hot air switching unit. 5. The air conditioner described in 1.
5. The heat exchanger (22A) of the condenser is arranged such that its longitudinal direction is a predetermined direction,
   The hot air switching unit is
   An opening for supplying hot air (36) disposed in a ventilation path for guiding the hot air to the air-conditioning target space;
   A hot air exhaust opening (37) disposed in a ventilation path for guiding the hot air to the outside of the air conditioning target space;
   The air conditioner according to any one of claims 1 to 4, wherein the hot air supply opening and the hot air exhaust opening are arranged side by side in the predetermined direction.
6. The evaporator's heat exchange section (24A) is arranged such that its longitudinal direction is a predetermined direction,
   The switching unit for cold air is
   A cold air supply opening (41) arranged in a ventilation path for guiding the cold air to the air conditioning target space;
   A cold air exhaust opening (42) disposed in a ventilation path for guiding the cold air to the outside of the air conditioning target space,
   The air conditioning apparatus according to any one of claims 1 to 5, wherein the cold air supply opening and the cold air exhaust opening are arranged side by side in the predetermined direction.
7. A supply-side air volume adjustment unit (46) that adjusts an air volume ratio of the hot air and the cold air supplied to the air-conditioning space;
   An exhaust-side air volume adjusting unit (47) that adjusts the air volume ratio of the warm air and the cold air blown to the outside of the air-conditioning target space;
   The supply-side air volume adjustment unit is configured to be able to supply the air-conditioning target space by mixing the warm air and the cold air.
   The air conditioner according to any one of claims 1 to 6, wherein the exhaust air volume adjusting unit is configured to mix the warm air and the cool air and to blow air to the outside of the air conditioning target space.
8. The said supply side air volume adjustment part increases the air volume ratio of the said warm air in the air supplied to the said air-conditioning object space as it increases the air volume ratio of the said cool air in the said exhaust side air volume adjustment part. Air conditioner.
9. The said supply side air volume adjustment part increases the air volume ratio of the said cold wind in the air supplied to the said air-conditioning object space as it increases the air volume ratio of the said warm air in the said exhaust side air volume adjustment part. The air conditioner described in 1.

Images