JP2022001796A - Air conditioner - Google Patents

Abstract

To reduce the size of a product.SOLUTION: In an air conditioner 100, a fan 13 is disposed at a windward side of a radiator 10 and an evaporator 12. Therefore, by commonly using a section from sucking of air up to the radiator 10 and the evaporator 12 of an air flow passage and bending a first ventilation passage 18 through which the air passing through the radiator 10 passes, a structure of blowing cool air and warm air in different directions is simplified, and this configuration contributes to miniaturization of the product.SELECTED DRAWING: Figure 3

Description

The present invention relates to an air conditioner in which a refrigerant circuit is housed in one casing.

In recent years, an air conditioner in which a refrigerant circuit is housed in one casing has become widespread. For example, the air conditioner described in Patent Document 1 (Japanese Patent Laid-Open No. 63-176938) includes a condenser. It is configured so that the blowing direction of the warm air (warm air) that has passed through and the blowing direction of the cold air (cold air) that has passed through the evaporator are different.

However, in the above-mentioned air conditioner, the configuration for making the hot air and cold air blowing directions different is complicated, and it is not easy to miniaturize the product. Therefore, there is a problem of downsizing the product.

The air conditioner according to the first aspect is an air conditioner that circulates a refrigerant in the order of a compressor, a radiator, and an evaporator, and includes a fan and a casing. The fan is located on the windward side of the radiator and evaporator and creates a flow of air through the radiator and evaporator. The casing houses the compressor, radiator, evaporator and fan. The air passage for air that has passed through one of the radiator and the evaporator is curved.

In this air conditioner, the ventilation path of the air passing through one of the radiator and the evaporator is bent, so that the configuration for blowing cold air and warm air is simplified, which contributes to the miniaturization of the product.

The air conditioner of the second aspect is the air conditioner of the first aspect, and the air passage of the air passing through the other of the radiator and the evaporator extends in the passing direction thereof.

In this air conditioner, the user can supply either cold air or warm air to the object by changing the direction of the air conditioner.

The air conditioner of the third aspect is the air conditioner of the first aspect or the second aspect, and the fan is shared by one fan. Therefore, it contributes to the reduction of the number of parts.

The air conditioner according to the fourth aspect is an air conditioner according to any one of the first aspect to the third aspect, and the fan is a cross flow fan.

In this air conditioner, the cross-flow fan can push the same amount of air into the radiator and the evaporator if the pressure distribution is uniform and the ventilation resistance of the radiator and the evaporator is the same.

The air conditioner according to the fifth aspect is any one of the air conditioners according to the first aspect to the fourth aspect, and the casing further has a suction port. The suction port takes in the air flowing through the radiator and the air flowing through the evaporator. Further, the suction port is formed on two side walls of the casing forming the corner portion and at least one of the corner portions.

In this air conditioner, a part of the air path flowing through the radiator and a part of the air path flowing through the evaporator can be shared, which contributes to the miniaturization of the product.

The air conditioner according to the sixth aspect is an air conditioner according to any one of the first aspect to the fifth aspect, and a diffuser, a scroll, and a tongue portion are provided around the fan. The diffuser diffuses air from the fan towards the radiator and evaporator. The scroll extends from the outer circumference of the fan while gradually bending away from the outer circumference of the fan in the centrifugal direction, and is connected to the diffuser. The tongue is connected to the diffuser so that it bends from the edge of the wall closest to the outer circumference of the fan at a position different from the scroll. The scroll on the radiator side and the scroll on the evaporator side are arranged at the same position or in the vicinity when viewed from the rotation axis direction of the fan. Further, the tongue portion on the radiator side and the tongue portion on the evaporator side are arranged at the same position or in the vicinity when viewed from the rotation axis direction of the fan. Therefore, in this air conditioner, the ventilation efficiency is improved.

The air conditioner of the seventh aspect is the air conditioner of the sixth aspect, and the maximum width of the diffuser on the radiator side when viewed from the rotation axis direction of the fan is set according to the width of the radiator. .. Further, the maximum width of the diffuser on the evaporator side when viewed from the rotation axis direction of the fan is set according to the width of the evaporator.

In this air conditioner, even if the width dimensions of the radiator and the evaporator are different, the diffuser can handle them.

The air conditioner according to the eighth aspect is the air conditioner according to the sixth or seventh aspect, and at least a part of the ventilation path, the diffuser, the scroll and the tongue is made of a foam material. Therefore, it contributes to weight reduction.

The refrigerant circuit diagram of the air conditioner of one Embodiment of this disclosure. Perspective view of the air conditioner. FIG. 3 is a perspective view of an air conditioner when the second side surface and the third side surface of the casing are arranged so as to be on the front side. A plan view of an air conditioner when viewed from directly above by arranging the second side surface so as to be on the front side. The perspective view which shows the positional relationship of a radiator, an evaporator and a fan. FIG. 5 is a perspective view of the radiator, evaporator and fan of FIG. 5 when viewed from different angles. FIG. 3 is a partial cross-sectional view of an air conditioner cut in the virtual plane F1 shown in FIG. FIG. 3 is a partial cross-sectional view of an air conditioner cut in the virtual plane F2 shown in FIG.

(1) Configuration of Air Conditioning Device 100 FIG. 1 is a refrigerant circuit diagram of the air conditioning device 100 according to the embodiment of the present disclosure. In FIG. 1, the air conditioner 100 has a refrigerant circuit in which a refrigerant circulates in the order of a compressor 9, a radiator 10, an expansion valve 11, and an evaporator 12.

The radiator 10 and the evaporator 12 are both fin-and-tube heat exchangers. The casing 20 houses the compressor 9, the radiator 10, the expansion valve 11, and the evaporator 12. Further, the casing 20 also houses a fan 13 and an electrical component 50 (see FIGS. 3 and 4) that controls the compressor 9 and the fan 13.

In this embodiment, the fan 13 is a cross-flow fan, which is arranged on the windward side of the radiator 10 and the evaporator 12 to generate a flow of air passing through the radiator 10 and the evaporator 12.

(2) Details of each part of the air conditioner 100 FIG. 2 is a perspective view of the air conditioner 100. In FIG. 2, the casing 20 has a rectangular parallelepiped shape having a substantially rectangular horizontal cross section, and is arranged so that the longitudinal direction is the vertical direction.

(2-1) Casing 20
As shown in FIG. 2, the casing 20 has a first side wall 21, a second side wall 22, a third side wall 23, and a fourth side wall 24. Further, it further has a bottom plate 29 (see FIG. 3) and a top plate 30. The casing 20 is an embodiment in which the openings at both ends of the cylinder formed by the first side wall 21, the second side wall 22, the third side wall 23, and the fourth side wall 24 are closed by the bottom plate 29 and the top plate 30.

Further, in FIG. 2, as for the four corners formed by the four side walls, the one formed between the first side wall 21 and the fourth side wall 24 is referred to as the first corner 25, and the fourth corner is clockwise from there. The second corner 26, the third corner 27, and the fourth corner 28.

The casing 20 is provided with a first suction port 5, a second suction port 6, a first outlet 7, and a second outlet 8. The first suction port 5 and the first outlet 7 are formed on the first side wall 21. The second suction port 6 is formed on the fourth side wall 24. The second outlet 8 is formed on the second side wall 22.

Further, below the second side wall 22, a water storage tank mounting port 22a for attaching / detaching the water storage tank 70 is formed. The water storage tank 70 stores the dew condensation water generated inside the air conditioner 100.

The top plate 30 is provided with an operation panel 301 and a handle 303. The operation panel 301 includes switches for performing various operations such as starting / stopping the air conditioner 100. The operation panel 301 is provided so as to be located on the front side when the user confronts the second outlet 8.

FIG. 3 is a perspective view of the air conditioner 100 when the second side wall 22 and the third side wall 23 of the casing 20 are arranged so as to be on the front side. Further, FIG. 4 is a plan view of the air conditioner 100 when the second side wall 22 is arranged so as to be on the front side and viewed from directly above.

In FIGS. 3 and 4, the casing 20 is indicated by a two-dot chain line showing only the outline. As shown in FIGS. 3 and 4, the compressor 9 and the fan 13 are arranged on the fourth side wall 24 side of the virtual central axis that vertically penetrates the casing 20. Since these are heavier than other devices, the position of the center of gravity is biased toward the fourth side wall 24 side from the central axis.

Therefore, as shown in FIG. 2, the handle 303 is provided at a position biased toward the fourth side wall 24 from the center of the top plate 30 so as not to tilt when the handle 303 is grasped and the air conditioner 100 is lifted. ing.

Further, as shown in FIG. 2, the handle 303 is provided on a flat surface recessed from the surface of the other portion of the top plate 30, and the handle 303 is to the extent that a human finger can enter when the handle 303 is grasped and lifted. It is configured so that there is a gap.

(2-2) Heat sink 10, evaporator 12, and fan 13
FIG. 5 is a perspective view showing the positional relationship between the radiator 10, the evaporator 12, and the fan 13. Further, FIG. 6 is a perspective view of the radiator 10, the evaporator 12, and the fan 13 of FIG. 5 when viewed from different angles.

In FIG. 5, the radiator 10 and the evaporator 12 are fin-and-tube heat exchangers. The evaporator 12 is located above the radiator 10 and is arranged so that the projected portions of the evaporator 12 and the radiator 10 overlap each other when viewed from vertically above the evaporator 12.

(2-2-1) Heat sink 10
The radiator 10 has a plurality of fins 101 arranged so as to be stacked at intervals in the vertical direction, and a plurality of heat transfer tubes 103 penetrating the plurality of fins 101 in the thickness direction. The heat transfer tubes 103 are configured to form three rows in the air flow direction.

The dew condensation water generated by the evaporator 12 is guided onto the fin 101, but since the planar region of the fin 101 faces upward, the dew condensation water does not easily flow down and stays on the fin 101 for a long time.

Therefore, as compared with the case where the plane region of the fin is arranged parallel to the vertical direction, the amount of dew condensation water evaporated is large, and the amount of dew condensation water accumulated in the water storage tank 70 can be reduced accordingly.

(2-2-2) Evaporator 12
The evaporator 12 has a plurality of fins 121 arranged so as to be stacked at intervals in the horizontal direction, and a plurality of heat transfer tubes 123 penetrating the plurality of fins 121 in the thickness direction. The heat transfer tubes 123 are configured to form two rows in the air flow direction.

Since the plane region of the fin 121 extends in the vertical direction, the dew condensation water generated in the evaporator 12 is difficult to stay and can easily fall.

(2-2-3) Fan 13
The fan 13 has a fan rotor 13a, a fan rotor 13b, and a fan motor 13c. In the present embodiment, the fan rotor 13a and the fan rotor 13b are one fan rotor integrally formed, but for convenience of explanation, the radiator 10 side portion of the fan rotor is the fan rotor 13a and the evaporator 12 side portion. It is distinguished from the fan rotor 13b.

The fan motor 13c is fixed on the bottom plate 29, and the rotating shaft of the fan motor 13c is connected to the fan rotor 13a.

The fan rotor 13a is located at a position facing the radiator 10 and pushes air toward the radiator 10. The fan rotor 13b is located at a position facing the evaporator 12 and pushes air toward the evaporator 12.

As described above, since the fan 13 is arranged on the windward side of the radiator 10 and the evaporator 12, there is an advantage that at least the suction port of the air flowing through the radiator 10 and the evaporator 12 can be shared.

(2-3) Water receiving member 60
A water receiving member 60 is provided between the radiator 10 and the evaporator 12. As shown in FIGS. 5 and 6, the water receiving member 60 forms a container with a water receiving surface 60a, a first side surface 60b, a second side surface 60c, and a third side surface 60d (see FIG. 6).

The water receiving surface 60a is inclined so that the height position becomes higher toward the leeward side of the air flow, and the dew condensation water that has fallen on the water receiving surface 60a flows to the leeward side.

The first side surface 60b and the second side surface 60c stand so as to sandwich the water receiving surface 60a from the side along the air flow so that the dew condensation water that has fallen on the water receiving surface 60a does not overflow from the side.

The third side surface 60d dams the dew condensation water on the windward side of the water receiving surface 60a in order to collect the dew condensation water flowing to the windward side along the inclination of the water receiving surface 60a together with the first side surface 60b and the second side surface 60c. Standing up to stop.

(2-3-1) Water guide unit 61
The water receiving member 60 further has a water guiding portion 61. As shown in FIG. 6, the water guide portion 61 is a water channel extending downward from the portion where the height position of the water receiving surface 60a is the lowest. The tip of the water guide portion 61 is located on the windward side of the radiator 10, and the tip extends from the top of the radiator 10 to the height position of the plurality of fins 101.

The cross-sectional shape of the water guide portion 61 is concave, and the concave shape is open toward the fin 101 of the radiator 10 with the bottom facing the windward side. Therefore, the dew condensation water collected at the lowest point of the water receiving surface 60a is guided to the fin 101 of the radiator 10 by the water guiding portion 61.

(2-3-2) Expansion unit 62
The water receiving member 60 further has an expansion portion 62. As shown in FIG. 5, the expansion portion 62 is a portion extending substantially horizontally from the leeward end of the water receiving surface 60a toward the leeward side.

Further, the expansion portion 62 also functions as a partition member that vertically separates the first ventilation passage 18 through which the air passing through the radiator 10 passes and the second ventilation passage 19 through which the air passing through the evaporator 12 passes.

(2-4) Water storage tank 70
The water storage tank 70 is arranged below the radiator 10, and receives and stores the dew condensation water that has fallen without being completely evaporated by the radiator 10. Therefore, the upper lid 71 of the water storage tank 70 is formed with a concave surface 71a whose height position is lowered toward the center, and a through hole 71b is provided in the central portion of the concave surface 71a.

The dew condensation water that has fallen on the concave surface 71a of the upper lid 71 collects in the center and enters the water storage tank 70 through the through hole 71b.

(3) Path of air passing through the radiator 10 FIG. 7 is a partial cross-sectional view of the air conditioner 100 cut in the virtual plane F1 shown in FIG. In FIG. 7, the fan rotor 13a of the fan 13 is arranged in a space close to the first corner 25 formed by the first side wall 21 and the fourth side wall 24 with the rotation axis directed in the vertical direction. When the fan rotor 13a rotates, the air outside the casing 20 is sucked from the first suction port 5 and the second suction port 6.

(3-1) First diffuser 15a
The first diffuser 15a diffuses the air introduced by the fan rotor 13a toward the radiator 10 arranged on the downstream side of the air flow. The maximum width of the first diffuser 15a is set to correspond to the width of the radiator 10 when viewed from the rotation axis direction of the fan rotor 13a. The first diffuser 15a is made of a foam material for weight reduction.

(3-2) First scroll 16a
The first scroll 16a is located on the windward side of the first diffuser 15a, and extends from the outer periphery of the fan rotor 13a while being curved so as to gradually move away in the centrifugal direction, and is connected to the first diffuser 15a. The first scroll 16a is made of a foam material for weight reduction.

(3-3) First tongue portion 17a
The first tongue portion 17a is located on the windward side of the first diffuser 15a, and is located at a position different from that of the first scroll 16a. It is connected to the diffuser 15a. The first tongue portion 17a is made of a foam material for weight reduction.

(3-4) First ventilation path 18
The first ventilation passage 18 is located on the leeward side of the radiator 10. The first ventilation passage 18 extends toward the second side wall 22 and then gradually turns toward the first side wall 21 and finally turns 90 ° to connect with the first outlet 7 of the first side wall 21. .. The first ventilation passage 18 is made of a foam material for weight reduction.

(4) Path of air passing through the evaporator 12 FIG. 8 is a partial cross-sectional view of the air conditioner 100 cut in the virtual plane F2 shown in FIG. In FIG. 8, the fan rotor 13b of the fan 13 is arranged in a space close to the first corner 25 formed by the first side wall 21 and the fourth side wall 24 with the rotation axis directed in the vertical direction. When the fan rotor 13b rotates, the air outside the casing 20 is sucked from the first suction port 5 and the second suction port 6.

(4-1) Second diffuser 15b
The second diffuser 15b diffuses the air introduced by the fan rotor 13b toward the evaporator 12 located on the downstream side of the air flow. The maximum width of the second diffuser 15b when viewed from the rotation axis direction of the fan rotor 13b is set to correspond to the width of the evaporator 12. The second diffuser 15b is made of a foam material for weight reduction.

(4-2) Second scroll 16b
The second scroll 16b is located on the windward side of the second diffuser 15b, and extends from the outer periphery of the fan rotor 13b while being curved so as to gradually move away from the outer circumference in the centrifugal direction, and is connected to the second diffuser 15b. The second scroll 16b is made of a foam material for weight reduction.

In the present embodiment, the first scroll 16a and the second scroll 16b are integrally molded, and the first scroll 16a and the second scroll 16b are at the same position when viewed from the rotation axis direction of the fan 13. Blower efficiency is improved by the configuration.

However, even if the first scroll 16a and the second scroll 16b are separately molded, the deviation between the first scroll 16a and the second scroll 16b is the central angle when viewed from the rotation axis direction of the fan 13. If it is within 5 °, the same ventilation efficiency can be obtained.

(4-3) Second tongue 17b
The second tongue portion 17b is located on the windward side of the second diffuser 15b, and at a position different from that of the second scroll 16b, the second tongue portion 17b warps from the end of the wall closest to the outer circumference of the fan rotor 13b. It is connected to the diffuser 15b. The second tongue portion 17b is made of a foam material for weight reduction.

In the present embodiment, the first tongue portion 17a and the second tongue portion 17b are integrally molded, and the first tongue portion 17a and the second tongue portion 17b are at the same position when viewed from the rotation axis direction of the fan 13. This configuration improves the ventilation efficiency.

However, even if the first tongue portion 17a and the second tongue portion 17b are separately molded, the deviation between the first tongue portion 17a and the second tongue portion 17b when viewed from the rotation axis direction of the fan 13. If the central angle is within 5 °, the same ventilation efficiency can be obtained.

(4-4) Second ventilation passage 19
The second ventilation passage 19 is located on the leeward side of the evaporator 12. The second ventilation passage 19 extends toward the second side wall 22 and connects to the second outlet 8 of the second side wall 22. The second ventilation passage 19 is made of a foam material for weight reduction.

(5) Features (5-1)
In the air conditioner 100, since the fan 13 is arranged on the wind side of the radiator 10 and the evaporator 12, the section from sucking air in the air flow path to the front of the radiator 10 and the evaporator 12 If the first air passage 18 through which the air passing through the radiator 10 passes is bent, the configuration for separating the cold air and the warm air becomes simple, which contributes to the miniaturization of the product.

(5-2)
The second ventilation passage 19 through which the air passed through the evaporator 12 passes extends in the passing direction thereof. As a result, the cold air and the warm air are blown out in different directions, so that the user can supply either the cold air or the warm air to the blown object by changing the direction of the air conditioner 100.

(5-3)
The fan 13 is shared by one cross-flow fan. Therefore, it contributes to the reduction of the number of parts. Further, if the pressure distribution of the cross flow fan is uniform and the ventilation resistance of the radiator 10 and the evaporator 12 is the same, the same amount of air can be pushed into the radiator 10 and the evaporator 12.

(5-4)
The first suction port 5 is formed on the first side wall 21 of one of the two side walls of the casing 20 forming the first corner 25, and the second suction port 6 is formed on the two side walls of the casing 20 forming the first corner 25. It is formed on the fourth side wall 24 of the other side wall, and the air supplied to the radiator 10 and the evaporator 12 can be taken in from the first suction port 5 and the second suction port 6. Further, since the section from the suction of air in the air flow path to the front of the radiator 10 and the evaporator 12 can be shared, it contributes to the miniaturization of the product.

(5-5)
The first scroll 16a on the radiator 10 side and the second scroll 16b on the evaporator 12 side are arranged at the same position or in the vicinity when viewed from the rotation axis direction of the fan 13. Further, when viewed from the rotation axis direction of the fan 13, the first tongue portion 17a on the radiator 10 side and the second tongue portion 17b on the evaporator 12 side are arranged at the same position or in the vicinity thereof. Therefore, the ventilation efficiency is improved.

(5-6)
Even if the width dimensions of the radiator 10 and the evaporator 12 are different, the first diffuser 15a can be used for the radiator 10 and the second diffuser 15b can be used for the evaporator 12. Therefore, the first scroll 16a on the radiator 10 side and the second scroll 16b on the evaporator 12 side can be arranged at the same position or in the vicinity when viewed from the rotation axis direction of the fan 13. Further, when viewed from the rotation axis direction of the fan 13, the first tongue portion 17a on the radiator 10 side and the second tongue portion 17b on the evaporator 12 side can be arranged at the same position or in the vicinity thereof. There is.

(5-7)
At least a part of the first diffuser 15a, the second diffuser 15b, the first scroll 16a, the second scroll 16b, the first tongue portion 17a, the second tongue portion 17b, the first ventilation passage 18, and the second ventilation passage 19 is made of a foam material. It is molded with. Therefore, it contributes to weight reduction.

(6) Modification Example In the above embodiment, the first suction port 5 is provided on the first side wall 21, the second suction port 6 is provided on the fourth side wall 24, and the first corner 25 is the first suction port 5. It is an embodiment sandwiched between the second suction port 6 and the second suction port 6.

However, the number of suction ports does not necessarily have to be two, and for example, any one of the first suction port 5 and the second suction port 6 may be used.

Alternatively, the portion of the first corner 25 sandwiched between the first suction port 5 and the second suction port 6 may be removed to form one suction port.

In such a case, the man-hours for processing the suction port for the casing 20 are reduced, which contributes to cost reduction.

Although the embodiments of the present disclosure have been described above, it will be understood that various modifications of the embodiments and details are possible without departing from the spirit and scope of the present disclosure described in the claims. ..

The contents of the present disclosure are useful for air conditioners or window air conditioners that perform local cooling or heating.

5 1st suction port 6 2nd suction port 9 Compressor 10 Dissipator 12 Evaporator 13 Fan 15 Diffuser 15a 1st diffuser 15b 2nd diffuser 16 Scroll 16a 1st scroll 16b 2nd scroll 17 Tongue 17a 1st tongue 17b 2nd tongue 18 1st ventilation passage 19 2nd ventilation passage 20 Casing 21 1st side wall 24 4th side wall 25 1st corner (corner)

Japanese Unexamined Patent Publication No. 63-176938

Claims (8)

An air conditioner that circulates a refrigerant in the order of a compressor (9), a radiator (10), and an evaporator (12).
A fan (13) arranged on the windward side of the radiator (10) and the evaporator (12) to generate an air flow through the radiator (10) and the evaporator (12).
A casing (20) for accommodating the compressor (9), the radiator (10), the evaporator (12), and the fan (13).
Equipped with
The air passage (18) that has passed through one of the radiator (10) and the evaporator (12) is curved.
Air conditioner (100). The air passage (19) that has passed through the other of the radiator (10) and the evaporator (12) extends in the passing direction thereof.
The air conditioner (100) according to claim 1. The fan (13) is shared by one fan.
The air conditioner (100) according to claim 1 or 2. The fan (13) is a cross-flow fan.
The air conditioner (100) according to any one of claims 1 to 3. The casing (20) further has suction ports (5, 6) for taking in the air flowing through the radiator (10) and the air flowing through the evaporator (12).
The suction ports (5, 6) are formed on two side walls (21, 24) of the casing (20) forming the corner portion (25), and at least one of the corner portions (25).
The air conditioner (100) according to any one of claims 1 to 4. Around the fan (13),
A diffuser (15) that diffuses air from the fan (13) toward the radiator (10) and the evaporator (12).
A scroll (16) that extends from the outer circumference of the fan (13) while gradually bending away from the outer circumference in the centrifugal direction and is connected to the diffuser (15).
A tongue portion (17) connected to the diffuser (15) so as to warp from the end of the wall closest to the outer circumference of the fan (13) at a position different from the scroll (16).
Is provided,
When viewed from the rotation axis direction of the fan (13), the scroll (16a) on the radiator (10) side and the scroll (16b) on the evaporator (12) side are located at or near the same position. Placed,
Further, when viewed from the rotation axis direction of the fan (13), the tongue portion (17a) on the radiator (10) side and the tongue portion (17b) on the evaporator (12) side are at the same position. Or is located in the vicinity,
The air conditioner (100) according to any one of claims 1 to 5. The maximum width of the diffuser (15a) on the radiator (10) side when viewed from the rotation axis direction of the fan (13) is set according to the width of the radiator (10).
Further, the maximum width of the diffuser (15b) on the evaporator (12) side when viewed from the rotation axis direction of the fan (13) is set according to the width of the evaporator (12).
The air conditioner (100) according to claim 6. At least a part of the ventilation passage (18, 19), the diffuser (15), the scroll (16) and the tongue portion (17) is formed of a foam material.
The air conditioner (100) according to claim 6 or 7.

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