JP6212708B2 - Air conditioner - Google Patents

Description

  The present invention relates to an indoor unit of an air conditioner having a plurality of heat exchangers.

  A conventional air conditioner is provided with one or more suction ports on the front and / or upper surface of the indoor unit main body, and one or more outlets on the lower surface and the like. And a heat exchanger. The heat exchanger is arranged on the front side and the upper side in the indoor unit body in a state of being divided into a plurality of parts. The divided heat exchangers are arranged so as to surround the cross flow fan from the windward side, and a heat exchanger as large as possible is accommodated in a limited space (see, for example, Patent Document 1).

  The heat exchanger includes a heat transfer tube in which the refrigerant flows and fins that cover the outer periphery of the heat transfer tube, and promotes heat exchange between the refrigerant and the air. Because the heat transfer tubes are difficult to arrange at the joints between the divided heat exchangers, the airflow resistance is reduced, and the air flowing through the heat exchanger concentrates and flows in, resulting in a uniform flow rate throughout the heat exchanger. The air cannot be allowed to pass through, and the heat transfer performance of the entire heat exchanger may not be fully utilized. For this reason, in order to prevent such a situation, a windshield plate that prevents the inflow of air is in close contact with the heat exchanger on the windward side of the joint (for example, see Patent Document 2).

International Publication No. 2012/124274 JP 2004-156891 A

  However, in the conventional configuration, there is a possibility of increasing the load of the fan motor and increasing the input power to the air conditioner by increasing the ventilation resistance due to the wind shielding plate being in close contact with the heat exchanger. . In addition, during the cooling operation, condensation may occur on the windshield, which may cause mold and may deteriorate the sanitary environment.

The present invention solves the above-described conventional problem, and a guider is provided to rectify the air flowing into the joint part by providing a predetermined distance above the joint part of the heat exchanger, and the guider is The filter or the filter frame that supports the filter is molded into a predetermined shape .

  As a result, the guider can restrict the concentrated inflow of air into the joint and does not completely block the inflow of air, so that the load on the fan motor is less than that of a conventional windshield that is in close contact with the heat exchanger. The increase can be reduced.

  With the above configuration, it is possible to suppress the intensive inflow of air into the joint portion of the heat exchanger while suppressing an increase in the input power to the air conditioner, and further to prevent the occurrence of mold on the guider, the sanitary environment Can be prevented from worsening.

The longitudinal cross-sectional view of the indoor unit in embodiment of this invention The longitudinal cross-sectional view of the heat exchanger of the indoor unit in embodiment of this invention Schematic diagram of the air flow around the heat exchanger and guider of the indoor unit in the embodiment of the present invention The longitudinal cross-sectional view which shows an example of the guider in embodiment of this invention

1st invention is a suction port provided in the upper surface part or front part of the indoor unit main body, a blower outlet provided in the front part or lower surface part of the indoor unit body, and a filter disposed in the suction port, An air conditioner comprising a blower housed in the indoor unit main body and a plurality of heat exchangers arranged in a wind circuit including the blower, wherein the wind at a joint portion between the plurality of heat exchangers A guider is provided on the upper side to provide a predetermined distance from the joint and rectifies the air flowing into the joint. The guider serves as a part of the filter or a filter frame that supports the filter. An air conditioner that is molded into a predetermined shape .

Thereby, the concentrated inflow of air at the joint portion of the heat exchanger can be suppressed while suppressing an increase in the load of the fan motor.

In addition, the filter or a part of the filter frame that supports the filter is formed into a predetermined shape. Thereby, the concentrated inflow of air at the joint portion of the heat exchanger can be suppressed while suppressing an increase in the load of the fan motor only by changing the filter or the filter frame.

2nd invention has at least 1 or more peak part which protruded in the convex shape on the upper surface side of the guider as described in 1st invention. Thereby, when dew condensation occurs in the guider, the dew condensation water can be drained downward from the guider.

The third invention is characterized in that the cross-sectional shape of the peak portion described in the second invention is substantially triangular. Thereby, when dew condensation occurs in the guider, the dew condensation water can be drained downward from the guider.

The fourth invention is characterized in that the cross-sectional shape of the peak portion described in the second invention is a substantially arc shape. Thereby, when dew condensation occurs in the guider, the dew condensation water can be drained downward from the guider.

5th invention has two or more mountain parts of 2nd invention, and has the drainage hole which penetrates a guider in the trough part pinched | interposed into several mountain parts. Thereby, the dew condensation water generated on the guider can be discharged below the slope, and the dew condensation water flowing in the valley can be discharged below the guider.
(Embodiment 1)
An air conditioner used in a general home is usually composed of an outdoor unit (not shown) and an indoor unit connected to each other by refrigerant piping, and a heat exchanger is arranged in each of the indoor unit and the outdoor unit. The refrigerant flowing in the pipe and the heat exchanger exchanges heat with the air outside the heat exchanger.

  FIG. 1 shows a longitudinal sectional view of an indoor unit of an air conditioner according to an embodiment of the present invention. As shown in FIG. 1, the indoor unit main body 1 has openings (a front opening 2, an upper opening 3, a lower opening 4). The front opening 2 has a front movable panel 5 which is a movable panel that can be freely opened and closed. The lower surface opening 4 has a lower surface movable panel 6 which is a movable panel that can be freely opened and closed.

When the air conditioner is stopped, each movable panel is in close contact with the indoor unit body 1 to close the front opening 2 and the lower opening 4. On the other hand, when the air conditioner is in operation, the movable panel moves in a direction away from the indoor unit body 1 to open the opening as shown in FIG. The front opening 2 and the upper opening 3 are formed with a suction port 7 for sucking the air circulated through the room into the indoor unit main body 1, and the lower opening 4 is a blowout of the air that has passed through the indoor unit main body 1. A mouth 8 is formed.

  A filter 10 is disposed at the suction port 7 so as to cover the outside of the heat exchanger 9 in order to prevent dust in the room air from adhering to the heat exchanger 9. The filter 10 is held by a filter frame 20 provided in the indoor unit body 1.

  In the vicinity of the outlet 8, there are provided an up / down changing blade 11 that changes the direction of the blowing air up and down and a left / right changing blade 12 that changes the direction of the blowing air left and right. The direction of the blown air can also be changed up and down by the lower surface movable panel 6.

  Inside the indoor unit main body 1, indoor heat exchanger 9 connected to a compressor (not shown) arranged in the outdoor unit by piping and indoor air taken in from the front opening 2 and the top opening 3 are received. A fan 13 is provided for exchanging heat with the heat exchanger 9 and blowing it out indoors. The fan 13 is axially connected to a fan motor (not shown) in the indoor unit body 1. The fan 13 in the present embodiment is a cross flow fan.

  Furthermore, an electrical unit 15 is disposed at a corner 14 of the space defined by the front opening 2 and the upper opening 3 in the indoor unit body 1. The electrical unit 15 contains electronic components related to the operation of the indoor unit.

  As shown in FIG. 2, the heat exchanger 9 in the indoor unit body 1 in the present embodiment is composed of heat transfer tubes 16 and fins 17, and is divided into a front heat exchanger 9a and a rear heat exchanger 9b. At the same time, it is arranged in an inverted V shape above the fan 13.

  Further, as shown in FIG. 3, a guider 19 is disposed above the joint 18 between the front heat exchanger 9a and the rear heat exchanger 9b at a predetermined distance from the heat exchanger 9. The length in the depth direction of the guider 19 (corresponding to the length in the left-right direction in FIG. 3) is longer than the length at which the front heat exchanger 9a and the back heat exchanger 9b overlap in the depth direction at the joint 18. The length of the substantially horizontal portion of the upper surface of the heat exchanger 9 is shorter. Further, the length in the width direction of the guider 19 (corresponding to the length in the direction perpendicular to the paper surface in FIG. 3) is substantially the same as the length in the width direction of the heat exchanger 9. Further, the guider 19 is disposed at a predetermined distance from the heat exchanger 9 that is shorter than the length in which the front heat exchanger 9a and the rear heat exchanger 9b overlap in the vertical direction at the joint 18.

  Such a guider 19 has a role of changing the flow direction of the air flowing into the heat exchanger 9, and is arranged above the joint portion 18 to suppress intensive inflow of air into the joint portion 18. It is possible to pass the air flow rate substantially uniformly over the entire heat exchanger 9. Furthermore, since the guider 19 is at a predetermined distance from the heat exchanger 9, it is possible to suppress an increase in the fan motor due to the placement of the guider 19.

  It should be noted that a plurality of guiders 19 may be arranged at one place of the joint 18 of the heat exchanger 9, and the guider 19 may be formed by changing a part of the filter 10 and the filter frame 20 into a predetermined shape. .

  Further, as shown in FIG. 4, the guider 19 may be provided with an inclination on the upstream side surface of the air flowing through the indoor unit main body 1 and at least one or more peak portions 19 a protruding in a convex shape on the upper surface side. As a result, when dew condensation occurs on the guider 19, the dew condensation water can be drained below the guider 19.

Furthermore, a drainage hole 19c that penetrates the guider 19 may be disposed in a valley portion 19b sandwiched between a plurality of peak portions 19a. The drain hole 19c is preferably provided near one end or both ends of the length of the guider 19 in the width direction. As a result, the condensed water that has flowed into the valley portion and has flowed into the valley portion 19b can be discharged downward of the guider 19 through the drain hole 19c.

  Since the heat exchanger guider according to the present invention can suppress the flow of air at the joint portion of the heat exchanger while suppressing the increase of the fan motor, it is possible to combine not only the room air conditioner but also a plurality of heat exchangers. The present invention can also be applied to applications such as a dehumidifier capable of performing heat exchange and a heat exchange unit of a washing dryer adopting a heat pump drying method.

DESCRIPTION OF SYMBOLS 1 Indoor unit body 2 Front opening part 3 Upper surface opening part 4 Lower surface opening part 5 Front movable panel 6 Lower surface movable panel 7 Suction inlet 8 Outlet 9 Heat exchanger 9a Front heat exchanger 9b Rear heat exchanger 10 Filter 11 Up-and-down change blade 12 Left and right changing blades 13 Fan 14 Corner portion 15 Electrical unit 16 Heat transfer tube 17 Fin 18 Joint portion 19 Guider 19a Mountain portion 19b Valley portion 19c Drain hole 20 Filter frame

Claims (5)

A suction port provided in the upper surface or front surface of the indoor unit main body, a blowout port provided in the front or lower surface of the indoor unit main body , a filter disposed in the suction port, and the interior of the indoor unit main body And a plurality of heat exchangers arranged in a wind circuit including the blower, on the windward side of the joint between the plurality of heat exchangers, the joint portion And a guider for rectifying the air flowing into the joint portion is disposed, and the guider is molded into a predetermined shape as a part of the filter or a filter frame that supports the filter. air conditioner, characterized by that. 2. The air conditioner according to claim 1, wherein at least one ridge protruding in a convex shape is provided on an upper surface side of the guider. The air conditioner according to claim 2, wherein a cross-sectional shape of the mountain portion is a substantially triangular shape. The air conditioner according to claim 2, wherein a cross-sectional shape of the mountain portion is a substantially arc shape. 3. The air conditioner according to claim 2, wherein the air conditioner has a plurality of the peak portions and has a drain hole penetrating the guider in a valley portion sandwiched between the plurality of peak portions.

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