JPS62196531A - Ceiling embedded type air conditioner - Google Patents

Abstract

PURPOSE:To reduce a passage resistance and improve an efficiency of blowing air by a method wherein an area of air passage is formed in such a way as it is gradually increased from a blowing port of a slant flow type blower to a heat exchanger. CONSTITUTION:Air within an air conditioned room is sucked through suction ports arranged at a central part of an ornamental plate 7 under operation of a slant flow type blower 1 driven by an electric motor 2, passes through an air filter 6 and passes through an air guider 5 and reaches to a heat exchanger 3. The air heat exchanged at the heat exchanger 3 is blown out from a blowing port arranged at an outer edge of the ornamental panel 7. A direction of air flow is indicated by an arrow. A shape of the passage within the device has a sufficient large radius of curvature so as not to generate a rapid variation in direction of air and then a passage resistance is reduced as much as possible. In particular, the passage extending from the slant flow type blower 1 to the heat exchanger 3 is constructed such that an area is gradually increased and a dynamic pressure found in an air flow can be recovered to an effective static pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a ventilation groove fiX of a ceiling-embedded air conditioner.

[Background of the invention]

Conventional ceiling-embedded air conditioners often use multi-blade blowers, as typified by the structure shown in Japanese Utility Model Publication No. 56-5690. In the structure using the multi-blade blower, the blowing direction of the blower is unidirectional, so the number of air conditioner outlets is limited to one or two, and the passage resistance is also large. In view of this point, recently, a ceiling-mounted air conditioner has been commercialized that uses a Canegle Starphone 71 to blow air over the entire circumference in the centrifugal direction and has three or more air outlets. Therefore, the heat exchanger and the blower are often placed close to each other, resulting in problems such as increased passage resistance and noise. To solve these problems, it is necessary to select a passage system with low resistance and a blower that matches the shape of the passage.

[Purpose of the invention]

An object of the present invention is to provide a ceiling-embedded air conditioner with low passage resistance and high air blowing efficiency [Summary of the Invention] In order to achieve the above object, the present invention One side of the ventilation passage from the to the heat exchanger is formed by a part of the casing, and the other side is formed by another member, and the area of the ventilation passage is formed so as to gradually increase in the flow direction. It is something that you have. Further, by providing guide vanes in the Suita flow path, a maximum efficiency of 75 to 85 cm was obtained, which was a significant improvement in efficiency compared to a multi-blade blower.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIG. 1st
The figure is a cross-sectional structural diagram showing a ceiling-embedded air conditioner using a mixed-flow blower according to the present invention. Only the decorative panel 7 protrudes from the ceiling surface 9, and the main body is stored in the ceiling length. has been done. The mixed flow blower 1 is connected to the drive shaft of the electric motor 2, and is connected to the casing 1 via the motor 2.
Attachment C is attached to 1. A heat exchanger 3 is arranged in the ventilation path of the mixed flow blower 1. 4 is the drain receiver V)
It is arranged directly below the heat exchanger 3. A five-piece air guider forms one side of a passage from the suction side of the mixed flow blower 1 to the air inflow side of the heat exchanger 3.

A part of the casing 11 is attached to the mixed flow blower 1.
The other side surface of the passage from the air outlet side of the heat exchanger 3 to the air inflow side of the heat exchanger 3 is formed. Reference numeral 6 denotes an air filter, which is housed in the suction section of the decorative panel 7 on the suction side of the mixed flow blower 1.

Reference numeral 71 denotes a wall forming a blowing passage, and an end portion thereof is attached integrally or separably with the panel 7. 8-key space, 91 is the ceiling surface. The air in the air-conditioned room is sucked in from the suction port provided in the center of the decorative panel 7 by the mixed flow blower 1 driven by the electric motor 2, passes through the air filters 3-6, and passes through the air guider 5 to the heat exchanger. 3.

The air heat-exchanged in the heat exchanger 3 is blown out from an outlet provided at the outer edge of the decorative panel 7. The direction of airflow is indicated by arrows in FIG. The shape of the passage inside the aircraft has a sufficiently large radius of bend to prevent sudden changes in direction, reducing passage resistance as much as possible. In particular, the passage from the mixed flow blower 1 to the heat exchanger 3 has a structure in which the area is reduced so that the dynamic pressure of the airflow can be recovered to effective static pressure.

According to this embodiment, efficient air blowing operation can be performed with little passage loss, and noise can be reduced because the air blower and the heat exchanger are appropriately spaced apart.

Furthermore, since the mixed flow blower blows out all around the air, it has the effect of being able to blow out air in multiple directions by appropriately arranging the heat exchanger 3. Furthermore, since the drain receptacle 4 can be installed high, the slope of the drain pipe can be set sufficiently, which eliminates the need for the drain depth mechanism used in many conventional ceiling-mounted air conditioners. There is. In addition, the utility space 8 directly below the drain receiver 4 can be used to store electrical items, etc., and also has room to store a heat exchanger with a large height dimension, and has multiple cooling and heating capacities. This has the effect of being able to support a group of product models with different types of features, and standardizing the housing.

Another embodiment according to the invention is shown in FIG.

FIG. 2 shows the embodiment shown in FIG. 1 with a guide vane 10 added thereto. As mentioned above, the mixed flow blower can be expected to have a high efficiency of 75 to 85 inches by providing guide vanes in the blowout flow path, and is therefore effective in reducing blower input.

〔Effect of the invention〕

According to the present invention, it is possible to provide a ceiling-embedded air conditioner of an all-circumference blowing type with low passage resistance and high air blowing efficiency.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional structural diagram of a ceiling-mounted air conditioner according to the present invention, and FIG. 2 is a cross-sectional structural diagram showing another embodiment of the ceiling-mounted air conditioner according to the present invention. 1... Diagonal flow blower 2... Blower drive electric motor 3.
... Heat exchanger 4 ... Drain receiver 5 ... Air guider 6 ... Air filter 7 ... Decorative panel 8 ... Utility space 9 ... Ceiling surface 10 ... Guide vane. 71

Claims (1)

[Claims] 1. A ceiling-embedded air conditioner in which a heat exchanger and a blower are combined in a casing and installed in the ceiling, and the air inlet and outlet are exposed on the ceiling surface, A mixed flow blower is attached and fixed to the center of the casing, one inner side of a ventilation path from the outlet side of the mixed flow blower to the heat exchanger is formed by a part of the casing, and a suction side of the mixed flow blower is formed. The other outer side of the ventilation passage extending from the casing to the heat exchanger is formed by a member separate from the casing, and the area of the ventilation passage gradually increases from the outlet side of the mixed flow blower toward the heat exchanger. A ceiling-embedded air conditioner characterized by being formed as follows. 2. The ceiling-embedded air conditioner according to claim 1, wherein a part of the casing portion forming the ventilation passage forms a large curved surface. 3. The ceiling-embedded air conditioner according to claim 1, wherein guide vanes are fixedly provided on the outlet side of the mixed flow blower.