JPH04190023A - air conditioner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an air conditioner suitable for use as an indoor unit of a so-called split type air conditioner that is divided into an outdoor unit and an indoor unit, and particularly relates to an air conditioner suitable for use as an indoor unit of a so-called split type air conditioner that is divided into an outdoor unit and an indoor unit. Regarding air conditioners with distinctive shapes.

[Conventional technology]

An indoor unit of a split air conditioner includes at least a fan that introduces and exhausts indoor air, a motor that moves the fan, and a heat exchanger that heats or cools the air by exchanging heat with the introduced air. ing. A cross-flow fan is generally used as the fan, and is configured to be thin.

This cross-flow fan is used by coaxially stacking multiple fans with the same diameter. When using a cross-flow fan in this way, the thickness of the indoor unit is determined by the diameter of the fan.

[Problem to be solved by the invention]

Incidentally, in recent years, as noise reduction has been promoted, the diameter has also tended to increase, but if the diameter is increased, it becomes impossible to meet the demand for thinness.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an air conditioner that can meet the demands for reduced thickness and lower noise.

[Means to solve the problem]

The above purpose is to set the diameter of the cross-flow fan to the center in an air conditioner that is equipped with a cross-flow fan and a heat exchanger inside the housing, and which exchanges heat with the air introduced from the room and then discharges it back into the room. This is achieved by forming the end side to have a smaller diameter than the end side.

[For production]

According to the above configuration, the thickness of a portion that has been restricted by the diameter of the cross flow fan can be reduced to below the restriction. In other words, if the end side of the crossflow fan is made smaller in diameter, preferably the smaller diameter portion is formed into a conical shape, and the casing is made thinner along the smaller diameter portion or the conical shape, it will visually be perceived as thinner. This makes it difficult to be aware of the size of the air conditioner. Further, by wrapping the heat exchanger around the end portion, that is, the small diameter side, it is possible to further promote thinning of the end portion, and it is possible to visually perceive that the end portion is even thinner.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an explanatory diagram showing a schematic configuration of an air conditioner according to an embodiment. In the figure, this air conditioner is equipped with a cross-flow fan 1 housed in a housing 2, but in this case, the cross-flow fan 1 is composed of a plurality of cross-flow fan units with different diameters stacked coaxially. In other words, the cross-flow fan 1 consists of, for example, three fan units 3 in the center with a large diameter, fan units 4 on both sides with a slightly smaller diameter, and fan units on both sides with a slightly smaller diameter. 5 and 5 are formed to have the smallest diameter.

These fan units 3, 4.5 are fixed coaxially to the rotating shaft 6, and are rotationally driven by a motor 7 connected to the rotating shaft 6.

In this regard, the housing 2 is arranged along the outer contour of this cross-flow fan 1 in a central portion 2, as shown in phantom lines.
It is formed to have a curved surface from a to the end portion 2b.

With this configuration, the depth and width of the end portion 2b of the casing 2 is reduced, so that the casing 2 appears to be thinner visually, and the presence of the casing 2 as a whole can be reduced.

FIG. 2 is a structural diagram showing the internal structure of an air conditioner according to another embodiment. In addition, in FIG. 2, each part that can be considered equivalent to each part shown in FIG. 1 is given the same reference numeral,
Duplicate explanations will be omitted.

In the figure, in the cross-flow fan 1, five fan units 8 in the center have a cylindrical shape with a large diameter, and a fan unit 9 on the right side of the large-diameter fan unit 8 has a cylindrical shape with a smaller diameter than the fan unit 8. Furthermore, the left fan unit 10 of the large diameter fan unit 8 and the right fan unit 11 of the small diameter fan unit 9 are formed into a conical shape, and furthermore, the fan units 12 and 1.3 on both sides are respectively inner fan units. 10. It is formed into a conical shape following II. In addition, a motor 7 for rotationally driving the fan 1 is connected to a rotating shaft 6 on the left side in the diagram of the cross flow fan 1 .

Further, a heat exchanger 15 is disposed on the upstream side of the cross flow fan 1 in the air blowing direction. The heat exchanger 15 is arranged in a curved manner as shown in the imaginary line in accordance with the difference in diameter of the cross flow fan 1. In this case, the end of the heat exchanger 15 is designed to extend to the back side of the housing 2, thereby minimizing the thickness of the side surface of the housing 2. The heat exchange medium of the heat exchanger 15 is communicated with an outdoor unit through red and white piping (not shown).

With the above configuration, the parts of the heat exchanger 15 facing the fan units 10.12.9.11.13 on both sides of the crossflow fan 1 are curved to form the crossflow fan 1.
Since it is placed closer to the rotating shaft 6 side, both end portions can be made thinner than the center portion. In this case, the heat exchanger 15 is ventilated as in the conventional case, so that the overall efficiency does not decrease. Regarding this point, the air volume of the central fan unit 8 is higher than that of the other fan units 9 and 10.
．． 11.12°13, so depending on the situation, it is possible to perform air conditioning in a different way than before by utilizing the difference in local air volume.

〔Effect of the invention〕

As is clear from the above description, according to the invention as claimed in claim 1, in which the diameter of the cross flow fan is gradually reduced from the center to both left and right ends, the diameter of the cross flow fan is reduced in thickness at the small diameter portion. It is also possible to reduce noise in the large diameter portion.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram showing the configuration of an air conditioner according to an embodiment, and FIG. 2 is a schematic configuration diagram showing the internal configuration of an air conditioner according to another embodiment. In the figure, 1 is a cross flow fan, 2 is a housing, 2a is a center part, 2b is an end part, 3, 4, 5, 8, 9°10, 1.1.
12 and 13 are fan units, and 15 is a heat exchanger. Patent Applicant: Fujitsu General Co., Ltd. Agent, Patent Attorney: Taku Ohara Kumibusho 1 Figure b

Claims (3)

[Claims] (1) In an air conditioner that is equipped with a cross-flow fan and a heat exchanger inside the housing, and in which air introduced from the room is heat-exchanged by the heat exchanger and then discharged into the room again, the diameter of the cross-flow fan is , an air conditioner characterized in that the end portions are formed to have a smaller diameter than the center portion side. (2) The air conditioner according to claim 1, wherein the cross flow fan portion formed to have a small diameter on the end side is formed in a conical shape. (3) The air conditioner according to claim 1, wherein the heat exchanger is curved inward on the small diameter side of the end portion.