JP2024013074A - air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To actualize the downsizing of an air conditioner while securing a storage space for a compressor.

SOLUTION: The air conditioner includes a casing storing a refrigerant circuit including a compressor 20, a heater 40, a decompression part 70, and a cooler 30, and blow parts 50, 60 for supplying air to the heater 40 or the cooler 30, the compressor having a fixing part having a plurality of fixing pieces for fixing the compressor to the casing, the compressor arranged so that at least one fixing piece is located below an air distribution path 68 where air blown by the blow part is distributed to exchange heat with the cooler or the heater. At a position corresponding to the fixing pieces in the air distribution path, a recessed part 65 is formed to store the fixing pieces.

SELECTED DRAWING: Figure 4

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to an air conditioner.

Conventionally, there have been small air conditioners that house a set of equipment necessary for air conditioning, such as equipment that makes up the refrigerant circuit (compressor, condenser, evaporator, pressure reducer, etc.) and a blower, as well as a control device that controls these. Are known.

Generally, a compressor applied to an air conditioner is supported by a housing at multiple locations for weight and vibration isolation (for example, Patent Document 1).

Japanese Patent Application Publication No. 2010-139083

By the way, the above-mentioned small air conditioner is installed and used in a relatively narrow and limited space, and there is a need for further miniaturization, so it is necessary to make the equipment housed in the case as efficient as possible. It is important to place them.

However, as described above, since the compressor is supported by the housing at multiple locations, a larger housing space than the compressor body is required to house the compressor, which meets the demand for miniaturization of air conditioners.

The present invention has been made in view of these circumstances, and an object of the present invention is to realize downsizing of an air conditioner while ensuring a space for housing a compressor.

An air conditioner according to one aspect of the present invention includes a refrigerant circuit including a compressor, a heater, a pressure reducing section, and a cooler, and a blower section that supplies air to the heater or the cooler, in a housing. The compressor has a fixing part having a plurality of fixing pieces for fixing the compressor to the housing, and at least one of the fixing pieces is blown by the blowing part, The compressor is arranged so as to be located below an air flow passage through which air that exchanges heat with the cooler or the heater flows, and the fixed piece is placed at a position corresponding to the fixed piece in the air flow passage. A recessed portion is formed to accommodate the material.

According to the present invention, it is possible to downsize an air conditioner while ensuring a space for accommodating a compressor.

1 is a perspective view showing the appearance of an air conditioner according to an embodiment of the present invention. 1 is a perspective view showing a schematic internal configuration of an air conditioner according to an embodiment of the present invention. FIG. 2 is a reference top view showing the inside of the air conditioner according to the embodiment of the present invention and showing the positional relationship of a compressor, a cooler, and a heater. 1 is a front view showing a schematic internal configuration of an air conditioner according to an embodiment of the present invention. 5 is a sectional view taken along line AA in FIG. 4. FIG. 5 is an enlarged view of part B in FIG. 4. FIG. FIG. 2 is a right side view of the inside of the air conditioner according to the embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. In the following description, the same reference numerals indicate parts with the same function, and redundant explanations in each figure will be omitted as appropriate.

1 to 7 show schematic configurations of an air conditioner 1 according to this embodiment. The air conditioner 1 includes a housing 10, a compressor 20 housed in the housing 10, a cooler (evaporator) 30, a heater (condenser) 40, a first blower 50, a second blower 60, and a pressure reducer 70. , and a control device 80. The compressor 20, the cooler 30, the heater 40, and the pressure reducer 70 are connected by refrigerant pipes 92 to 94, forming a refrigerant circuit in which refrigerant circulates.

In the air conditioner 1 shown in FIGS. 1 to 7, air passes through the cooler 30 and the heater 40 along the front-rear direction of the air conditioner 1. That is, in the air conditioner 1, the front-rear direction of the air conditioner 1 is the direction of air flow in the cooler 30 and the heater 40. By circulating air from the back to the front of the cooler 30 and circulating air from the front to the back of the heater 40, the heat between the air passing through the cooler 30 and the heater 40 and the refrigerant is reduced. Let the exchange take place.

(About the layout of the outside of the housing)
As shown in FIG. 1, an operation panel 11 is provided on the front of the casing 10 at a position corresponding to the housing position (described later) of the control device 80, and is adjacent to the operation panel 11 and corresponds to the housing position of the cooler 30. The air outlet 12 is provided so as to do so. Further, an air suction port 13 is provided at a position corresponding to the housing position of the second blower 60.

On the back surface of the casing 10, an air suction port (not shown) is provided at a position corresponding to the housing position of the first blower 50, and an air exhaust port (not shown) is provided at a position corresponding to the housing position of the heater 40. It is being

(About the layout inside the casing)
Next, the layout of each device within the casing 10 of the air conditioner 1 according to this embodiment will be described. As shown in FIG. 2, in the case 10 of the air conditioner 1, a compressor 20, a heater 40, and a second blower 60 are arranged on the bottom plate 15, and the air is cooled above these (vertically upward). 30, a first blower 50, a pressure reducer 70, and a control device 80.

In particular, in the direction orthogonal to the flow direction of the air passing through the cooler 30 and in the horizontal direction of the cooler 30 (left-right direction when viewed from the front), the pressure reducer 70 is located on one side of the cooler 30 (left side when viewed from the front). The compressor 20 is arranged on the other side of the cooler 30 (on the right side when viewed from the front) and below the cooler 30 (on the lower side in the vertical direction). Further, a control device 80 is arranged above the compressor 20 and adjacent to the cooler 30. Note that an accumulator 22 is arranged in front of the compressor 20.

More specifically, on the bottom plate 15, the compressor 20 is arranged on the right side of the heater 40 when viewed from the front, and the second blower 60 is arranged on the front side of the heater 40. The cooler 30 is arranged above the heater 40 and slightly forward of the heater 40 so as to partially overlap the heater 40 in the vertical direction.

When viewed from the front, the pressure reducer 70 is placed on the left side of the cooler 30, the control device 80 is placed on the right side, and the first blower 50 is placed on the back side of the cooler 30.
A refrigerant inlet 32 is provided on the upper surface of the cooler 30 on one side of the cooler 30 (left side in front view), that is, on the pressure reducer 70 side, through which the refrigerant that has passed through the pressure reducer 70 flows into the cooler 30. ing. Further, on the upper surface of the cooler 30, a refrigerant outlet 33 for the refrigerant that passes through the cooler 30 and returns to the compressor 20 is provided on the rear side of the refrigerant inlet 32.

That is, in the cooler 30, the refrigerant inlet 32 is provided so that the refrigerant flows in from the upper surface of the cooler 30, and the refrigerant outlet 33 is provided so that the refrigerant flows out from the upper surface of the cooler 30. . The refrigerant outlet 33 and the compressor 20 are connected by a refrigerant pipe 94. The refrigerant pipe 94 is routed from the refrigerant outlet 33 to the rear side of the control device 80 , and then passes below the control device 80 and is connected to the front side of the compressor 20 .

When viewed from the front, the compressor 20 and the accumulator 22 are arranged on the right side of the heater 40, and the second blower 60 is arranged on the front side of the heater 40.
Between the heater 40 and the second blower 60, an air flow path 68 is formed by the fan case 61, through which air is blown from the second blower 60 and exchanges heat with the heater 40 (see FIG. 5). The shape of the fan case 61 will be described later.

A refrigerant inlet 42 is provided on the upper surface of the heater 40 on one side of the heater 40 (on the left side when viewed from the front) and on the rear side of the heater 40, through which the high-pressure refrigerant discharged from the compressor 20 flows. ing. Further, on the upper surface of the heater 40 , a refrigerant outlet 43 is provided on the front side of the refrigerant inlet 42 so as to pass through the heater 40 and flow out toward the pressure reducer 70 .

That is, in the heater 40, the refrigerant inlet 42 is provided so that the refrigerant flows in from the upper surface of the heater 40, and the refrigerant outlet 43 is provided so that the refrigerant flows out from the upper surface of the heater 40. .
The compressor 20 and the refrigerant inlet 42 of the heater 40 are connected by a refrigerant pipe (not shown), the refrigerant outlet 43 and the pressure reducer 70 are connected by a refrigerant pipe 92, and the refrigerant of the pressure reducer 70 and the cooler 30 is connected. It is connected to the inlet 32 by a refrigerant pipe 93. Both the refrigerant pipe 92 and the refrigerant pipe 93 are located on the pressure reducer 70 side with respect to the cooler 30.

(About the flow of refrigerant)
In the refrigerant circuit connected as described above, the refrigerant is compressed by the compressor 20 and discharged as a high-pressure gas refrigerant. The high-pressure gas refrigerant passes through a refrigerant pipe (not shown), flows into the heater 40 via the refrigerant inlet 42, and exchanges heat with the air blown from the second blower 60 and passing through the heater 40. radiates heat.

The high-pressure refrigerant flowing out from the refrigerant outlet 43 of the heater 40 passes through the refrigerant pipe 92, flows into the pressure reducer 70, is depressurized by the pressure reducer 70, expands, and becomes a low-pressure refrigerant. The refrigerant whose pressure has become low in the pressure reducer 70 passes through the refrigerant pipe 93 and flows into the cooler 30 from the refrigerant inlet 32 . The low-pressure refrigerant flowing into the cooler 30 absorbs heat by exchanging heat with the air blown by the first blower 50 and passing through the cooler 30, and flows out through the refrigerant outlet 33 of the cooler 30. The refrigerant flowing out of the cooler 30 flows through the refrigerant pipe 94 and returns to the compressor 20 via the accumulator 22. The refrigerant that has flowed into the compressor 20 is compressed again and the above circulation is repeated.

(About the fixed part of the compressor)
As shown in FIG. 3, the compressor 20 is fixed to the bottom plate 15 of the housing 10 by a fixing part 21. As shown in FIG. The fixing part 21 has three fixing pieces 21A, 21B, and 21C provided around the bottom of the compressor 20. The fixing pieces 21A, 21B, and 21C are arranged around the compressor 20 at equal intervals. The fixing pieces 21A, 21B, and 21C are provided so as to be located closer to the bottom surface of the compressor 20 than the height of the bottom plate 15. The compressor 20 is fastened and fixed to the bottom plate 15 via anti-vibration rubber (not shown) by bolts 25A, 25B, 25C inserted into screw holes provided in fixed pieces 21A, 21B, 21C.

Note that FIG. 3 is a reference diagram for showing the positional relationship between the compressor 20, the fixed part 21, and the heater 40, and in order to show these positional relationships, components that are not directly related are simplified and illustrated as appropriate. It is omitted. Therefore, in FIG. 3, for example, illustration of the control device 80, bolts 25B, and refrigerant pipes 92 to 94 is omitted.

Of the fixed portion 21, the fixed pieces 21A and 21C are located on the right side of the compressor 20 when viewed from the front, and the fixed piece 21B is located on the left side of the compressor 20 when viewed from the front. As shown in FIG. 3, the ends of the fixing pieces 21A, 21C and the outer periphery of the compressor 20 are aligned approximately on the same straight line, and these are arranged along the inner wall of the housing 10. Thereby, the compressor 20 can be arranged in the housing 10 so that no extra space is created between the right side of the compressor 20 and the inner wall of the housing 10 when viewed from the front.

On the other hand, as shown in FIG. 3, the fixing piece 21B is located on the left side of the compressor 20 when the air conditioner 1 is viewed from the front, and if it is placed as it is, it will interfere with the fan case 61 in the width direction of the air conditioner 1, or the An extra space is formed between the machine 20, the fan case 61, and the heater 40. Therefore, in this embodiment, in order not to create an extra space between the compressor 20, the fan case 61, and the heater 40, and to prevent the fixing piece 21B from interfering with the fan case 61, the fan is installed as follows. A case 61 is configured.

(About the shape of the fan case)
As shown in FIG. 4, the second blower 60 is housed in a fan case 61 and is provided in front of the heater 40. The fan case 61 houses the second blower 60 and also functions as a duct that forms an air flow path between the second blower 60 and the heater 40 . The compressor 20 is arranged on the right side of the fan case 61 and the heater 40 when viewed from the front. Note that the fan case 61 and the duct do not necessarily need to be integrally formed, and may be separate parts. Further, the air flow passage 68 formed between the second blower 60 and the heater 40 may be formed integrally with a heater case (not shown) that houses the heater 40.

Here, as shown in FIG. 5, an air flow passage 68 is formed between the heater 40 and the second blower 60 by the fan case 61. Since the width and height of the heater 40 are larger than the radial dimensions of the second blower 60, the air flow passage 68 formed by the fan case 61 has the largest opening area in the housing area of the second blower 60. The area of the opening near the connection part with the heating part 40 is the largest.

That is, the upper side 62A, the lower side 62B, the side 62C on the side opposite to the compressor 20, and the side 62D on the compressor 20 side of the fan case 61 are all inclined from the second blower 60 toward the heater 40. is formed. Therefore, the air flow passage 68 formed by the upper side 62A, lower side 62B, side 62C, and side 62D of the fan case 61 has an opening area that gradually expands from the second blower 60 toward the heating section 40. Section 62.

As shown in FIG. 5, the fan case 61 is arranged so that the axis of the second blower 60 is located above the axis of the heater 40 in the air flow direction by a height D. As a result, a gap is created below the fan case 61 by a height D where the axis of the second blower 60 is located above the axis in the air flow direction, and this gap is filled with the position of the fixing piece 21B and the bolt 25B. It can be a region.

Further, as shown in FIGS. 5 and 6, below the airflow passage 68 formed by the fan case 61, a fixed piece 21B and a fixed piece are attached to a portion of the expanded portion 62 that straddles the lower side surface 62B and the side surface 62D. A recess 65 is formed to avoid interference with bolt 25B that fastens bolt 21B. By providing the recess 65, the fixing piece 21B and the bolt 25B are located below the fan case 61 without interfering with the fan case 61 (see FIG. 7).

As described above, one of the fixing pieces 21B of the fixing parts 21 of the compressor 20 protrudes toward the fan case 61 and the heater 40, but the fixing piece 21B is located in the space formed by the recess 65 and the bottom plate 15. and bolts 25B are arranged. As a result, the fixing piece 21B and the bolt 25B do not interfere with the compressor 20, the fan case 61, and the heater 40 in both the width direction and the height direction of the air conditioner 1. 40 so that no extra space is created between them.

Note that by forming the recess 65 , the recess 65 partially interferes with the air flow passage 68 to the extent that the recess 65 bites into the air flow passage 68 . However, as described above, since the axis of the second blower 60 is disposed above the axis of the heater 40 in the air flow direction by the height D, the air flow path 68 of the recess 65 is The amount of biting is small, and the recessed portion 65 is located below the bolt 69 (fan fixing portion) that fixes the second blower 60 (see FIG. 5). Thereby, the formation of the recess 65 does not affect the flow of air blown from the second blower 60 or the heat exchange efficiency of the heater 40.

As described above, according to the present embodiment, it is possible to downsize the air conditioner while ensuring the housing space for the compressor.

Although the embodiments of the present invention have been described above in detail with reference to the drawings, the specific configuration is not limited to the above-described embodiments, and changes in design, etc., may be made without departing from the gist of the present invention. Even if there is, it is included in the present invention.

1: Air conditioner, 10: Housing, 11: Operation panel 12: Air outlet, 13: Suction port, 15: Bottom plate, 20: Compressor, 21: Fixed part 21A, 21B, 21C: Fixed piece, 25A, 25B, 25C: bolt 30: cooler, 40: heater,
50: first blower (blower section), 60: second blower (blower section),
61: Fan case, 62: Expanded part 62A: Upper side, 62B: Lower side, 62C: Side, 62D: Side 65: Recess, 68: Air flow path, 69: Bolt (fan fixing part)
70: Pressure reducer (pressure reducing part), 80: Control device, 92-94: Refrigerant piping

Claims (5)

An air conditioner in which a refrigerant circuit including a compressor, a heater, a pressure reduction part, and a cooler, and a blower part that supplies air to the heater or the cooler are housed in a housing,
The compressor has a fixing part having a plurality of fixing pieces for fixing the compressor to the casing,
arranging the compressor so that at least one of the fixed pieces is located below an air flow path through which air is blown by the blower and exchanges heat with the cooler or the heater;
An air conditioner, wherein a recess for accommodating the fixing piece is formed at a position corresponding to the fixing piece in the air flow passage. The air flow passage has an expanding part whose opening area gradually increases from the blowing part toward the cooler or the heater,
The air conditioner according to claim 1, wherein the recess is provided in the expanded portion. The air conditioner according to claim 2, wherein the recessed portion is provided at an end of the expanded portion on the side where the compressor is disposed. The blower section includes a blower fan that blows air flowing through the air flow path, and a fan fixing section that fixes the blower fan,
The air conditioner according to claim 3, wherein the recessed portion is located below the fan fixing portion. The blower fan is an axial fan with a rotating shaft extending in the air flow direction,
The air conditioner according to claim 2, wherein the rotating shaft is arranged above the axis of the cooler or the heater in the air flow direction that exchanges heat with the air blown by the axial fan.

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