JP2000329368A - Ceiling-buried air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ceiling-buried multizone air conditioner which is constituted to simplify the connecting work of pipelines in a ceiling by incorporating branch refrigerant pipes in a plurality of indoor machines and to prevent the occurrence of air resistance in the connecting pipes of the indoor machines by laying the pipes in air passages. SOLUTION: A ceiling-buried air conditioner is composed of an outdoor machine A provided with a compressor 1, a four-way valve 2, an indoor heat exchanger 3, an expansion valve 4, and a pair of pipeline connecting sections 6a; a plurality of indoor machines B1, B2, B3,... provided with connecting pipes C' each having a pair of pipeline connecting sections 6b on two surfaces of an enclosure carrying heat insulating members stuck to its internal surface and branch refrigerant pipes 6c connected between the pipeline connecting sections 6b and indoor heat exchangers 5a, 5b, 5c,...; and pipelines C which respectively connect the pipeline connecting sections 6a of the outdoor machine A and the pipeline connecting sections 6b of the indoor machines. In this case, in the upper corner of the heat insulating member which is formed in the enclosure and forms the passage of blown-out air heat-exchanged by means of the heat exchangers 5a, 5b, 5c,..., connecting pipes are laid and, at the same time, the pipes are covered with a cover.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-type ceiling-embedded air conditioner, and more specifically, to simplify the work of connecting pipes in a ceiling by incorporating refrigerant branch pipes in a plurality of indoor units. The present invention relates to a structure in which connection pipes for indoor units are arranged so that air resistance is not generated in an air passage.

[0002]

2. Description of the Related Art As shown in FIG. 4, for example, a conventional ceiling-mounted air conditioner has an outdoor air conditioner having a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, an expansion valve 4, and a pipe connection part 6a. Machine A,
Indoor heat exchangers 5a to 5c, refrigerant branch pipe 6c and pipe connection part
Are provided between a plurality of indoor units B1, B2, B3,... Provided with 6b and a piping connection portion 6a of the outdoor unit and a piping connection portion 6b of the indoor unit, and include an electromagnetic valve 8 and a piping connection portion 9. And a piping C for sequentially connecting the refrigerant branching device 7 and the pipe connection portion 6a of the outdoor unit to the refrigerant branching device 7 and the outdoor unit. During the operation, the refrigerant flow path indicated by the solid arrow was formed, and during the heating operation, the refrigerant flow path indicated by the dashed arrow was formed.

However, the structure of the refrigerant branching device 7 is complicated, and it is difficult to simplify the piping C, which is disadvantageous in terms of cost.
However, there is a problem that the workability for connecting the terminals is poor.

Alternatively, as shown in FIG. 5 or 6, for example, a refrigerant branching portion 10a or 10b is provided between a pipe connecting portion 6a of the outdoor unit and a pipe connecting portion 6b of the indoor unit. As described above, there is a problem that workability for connecting the pipe C is poor.

[0005]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, in the present invention, a plurality of indoor units are provided with refrigerant branch pipes so as to simplify the work of connecting pipes in a ceiling, It is an object of the present invention to provide a multi-type ceiling-embedded air conditioner in which connection pipes of the air conditioner are arranged so that air resistance is not generated in an air passage.

[0006]

In order to solve the above-mentioned problems, the present invention provides an outdoor unit having a compressor, a four-way valve, an outdoor heat exchanger, an expansion valve and a pair of piping connections, and a heat insulating member inside. A plurality of indoor units comprising a pair of piping connections on two sides of the housing to which is attached, a connection piping comprising a refrigerant branch pipe connected between the piping connections and an indoor heat exchanger; An air passage for the blow-off air formed in the housing and heat-exchanged by the indoor heat exchanger, the pipe comprising a pipe connection part of the outdoor unit and a pipe connection part of the pipe connection parts of the plurality of indoor units. The connection pipe is disposed at an upper corner of the heat insulating member, and a cover for covering the connection pipe is attached.

[0007] Further, a housing portion for housing the connection pipe is formed in an upper corner of the heat insulating member forming the air passage.

Further, the housing portion is formed in a curved shape corresponding to the outer shape of the connection pipe.

The cover is formed to have a substantially crescent cross section, and at least upper and lower ends thereof are attached to upper corners of the heat insulating member forming the air passage.

[0010] The heat insulating member is formed at the upper and lower ends of the cover with substantially parallel planes to the adhering surface of the upper corner of the heat insulating member.

The cover is made of the same material as the heat insulating member.

[0012] Further, a contact portion for contacting the rear surface of the cover is protruded from an upper corner of the heat insulating member forming the air passage.

[0013] In addition, a pipe connection portion of the indoor unit is provided on two opposing side surfaces of the housing, and the connection pipe and the accommodating portion are formed substantially straight between the pipe connection portions. It has a configuration.

[0014] Further, a pipe connection portion of the indoor unit is provided on two adjacent side surfaces of the housing, and the connection pipe and the accommodating portion are formed to be bent at substantially right angles between the pipe connection portions. It is the configuration that was done.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below as examples based on the attached drawings. FIG. 1 and FIG.
(A) to FIG. 2 (C), FIG. 3 (A) and FIG. 3 (B)
As shown in the above, a multi-type ceiling-embedded air conditioner according to the present invention includes an outdoor unit including a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, an expansion valve 4, and a pair of pipe connection portions 6a. A, and a connection pipe C ′ including a pair of pipe connection portions 6b on two surfaces of a casing a having a heat insulating member b adhered to the inside thereof, and a refrigerant branch pipe 6c connected between the pipe connection portions 6b. , And heat transfer tube 5a '
, 5b ′, 5c ′.. Having indoor heat exchangers 5a, 5b, 5c.
A plurality of indoor units B1, B2, B3,... Having a pipe connection portion 6a of the outdoor unit A and the plurality of indoor units B1, B2,
B3... And a pipe C for sequentially connecting the pipe connection portions 6b, formed in the housing a, and provided with the indoor heat exchangers 5a and 5b.
The upper corner d of the heat insulating member b forming an air passage c of the blown air heat-exchanged by b, 5c,.
As shown in (A), the connection pipe C 'is arranged, a cover e covering the connection pipe C' is attached, and the connection pipe C 'is sequentially connected by the pipe C to perform the cooling operation. Is
A refrigerant flow path indicated by a solid arrow is formed, and during a heating operation, a refrigerant flow path indicated by a dashed arrow is formed,
Thereby, the plurality of indoor units B1, B2, B3,... Have the refrigerant branch pipes 6c built therein, respectively, so that the pipe C is connected to the pipe connection part 6a of the outdoor unit and the pipe connection part 6b of the indoor unit. In addition, the pipe connection portions 6b of the indoor unit can be sequentially and easily connected to each other, so that the connection work of the pipe C in the ceiling can be simplified. At the same time, the connecting pipe C 'of the plurality of indoor units B1, B2, B3,... Is arranged so that air resistance does not occur in the air passage c.

As another example, as shown in FIG. 3B, a housing portion f for housing the connection pipe C 'is formed in the upper corner d of the heat insulating member b forming the air passage c. With this configuration, the connection pipe C ′ can be stably disposed in a position where air resistance does not occur in the air passage c in an effectively insulated state.

Further, since the accommodating portion f is formed in a curved shape corresponding to the outer shape of the connection pipe C ', the connection pipe C' is more effectively insulated, so that it is more stable. It is configured so that it can be arranged.

Further, the cover e is formed in a substantially crescent shape in cross section, and at least its upper and lower ends e 'are attached to the upper corner d of the heat insulating member b forming the air passage c. , The indoor heat exchangers 5a, 5b, 5c ...
Thus, the blown air that has been heat-exchanged does not receive air resistance at the upper corner d of the heat insulating member b.

The upper and lower ends e 'of the cover e are substantially parallel surfaces e' with respect to the surface to which the upper corner d of the heat insulating member b is adhered.
Is formed so that the substantially parallel surface e ′ can be accurately adhered to the upper corner d of the heat insulating member b.

Further, the cover e is made of the same material as the heat insulating member b, for example, a foamed PS molded heat insulating material, so that the connection pipe C 'can be effectively insulated. Structure.

Further, as shown in FIG. 3 (B), a contact portion g which comes into contact with the back surface of the cover e is protruded from an upper corner d of the heat insulating member b forming the air passage c. By increasing the contact area of the heat insulating member b with the upper corner d, the cover e can be reinforced so as not to be damaged, and at the same time, the connection pipe C ′ can be stably arranged in a more effectively insulated state. It is configured so that it can be installed.

Further, as shown in FIGS. 2 (A) and 2 (B), the pipe connection portions 6b of the indoor units B1, B2, B3,.
The connection pipe provided on two opposing side surfaces of the housing a.
Since C ′ and the accommodation section f are formed substantially straight between the two pipe connection sections 6b, the indoor units B1, B2, B3
.. Can be sequentially and easily connected by the pipe C, and at the same time, the connection pipe C ′ can be stably disposed in a position where air resistance does not occur in the air passage c in an effectively insulated state. The configuration is as described above.

Further, as shown in FIG. 2 (C), pipe connection portions 6b of the indoor units B1, B2, B3,... Are provided on two adjacent side surfaces of the housing a, and the connection pipe C 'is provided. And the accommodating portion f is formed between the two pipe connection portions 6b so as to be substantially perpendicular to each other, so that the indoor units B1, B2, B3,. At the same time as they can be sequentially connected in a state where they are arranged at positions facing the two adjacent side surfaces,
The connection pipe C ′ is configured to be stably disposed in a position where air resistance does not occur in the air passage c in an effectively insulated state.

With the above structure, as shown in FIG. 1, FIG. 2 (A) to FIG. 2 (C), and FIG. 3 (A) and FIG. The plug-in type air conditioner includes an outdoor unit A including a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, an expansion valve 4, and a pair of pipe connection portions 6a, and a housing in which a heat insulating member b is adhered inside. a connecting pipe C ′ having a pair of pipe connecting portions 6b on two surfaces thereof and a refrigerant branch pipe 6c connected between the pipe connecting portions 6b, and heat transfer tubes 5a ′, 5b ′, 5
, a plurality of indoor units B1, B2, B3,... having indoor heat exchangers 5a, 5b, 5c,. , B2, B3,... And a pipe C for sequentially connecting the pipe connection portions 6b, and the blown air formed in the housing a and subjected to heat exchange by the indoor heat exchangers 5a, 5b, 5c,. As shown in FIG. 3 (A), for example, the connection pipe C ′ is disposed at the upper corner d of the heat insulating member b forming the air passage c.
A cover e covering C ′ is attached, and the connection pipes C ′ are sequentially connected by the pipes C to form a refrigerant flow path indicated by a solid arrow during cooling operation, and a dashed line during heating operation. A refrigerant flow path indicated by an arrow is formed, whereby
By incorporating the refrigerant branch pipes 6c in the plurality of indoor units B1, B2, B3,..., Respectively, the pipe C is connected to the pipe connection part 6a of the outdoor unit and the pipe connection part 6b of the indoor unit,
The pipe connection portions 6b of the indoor unit can be sequentially and easily connected to each other, so that the connection work of the pipe C in the ceiling can be simplified, and the workability is greatly improved by a cost-effective configuration. At the same time, the connection pipe C 'of the plurality of indoor units B1, B2, B3,... Is embedded in the air passage c so that no air resistance is generated. Type air conditioner.

[0025]

As described above, according to the present invention, refrigerant branch pipes are built in a plurality of indoor units so that the work of connecting the pipes in the ceiling can be simplified, and at the same time, the connection pipes of the indoor units are connected to the air. This is a multi-type ceiling-mounted air conditioner arranged so that air resistance does not occur in the passage.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a refrigeration cycle of a multi-type embedded ceiling air conditioner according to the present invention.

FIGS. 2A and 2B are explanatory views of a main part of a multi-type ceiling-embedded air conditioner according to the present invention, wherein FIGS. (C) shows a state in which pipe connection portions provided on two adjacent surfaces are connected by pipe.

3A and 3B are cross-sectional views of a main part of a multi-type ceiling-mounted air conditioner according to the present invention, wherein FIG. 3A shows an example and FIG. 3B shows another example.

FIG. 4 is an explanatory diagram showing an example of a refrigeration cycle of a conventional multi-type embedded ceiling air conditioner.

FIG. 5 is an explanatory view showing another example of a refrigeration cycle of a conventional multi-type embedded ceiling air conditioner.

FIG. 6 is an explanatory view showing another example of a refrigeration cycle of a conventional multi-type embedded ceiling air conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Compressor 2 Four-way valve 3 Outdoor heat exchanger 4 Expansion valve 5a, 5b, 5c Indoor heat exchanger 5a ', 5b', 5c 'Heat transfer tube 6a Outdoor unit piping connection 6b Indoor unit piping connection 6c Refrigerant branch Pipe A Outdoor unit B1, B2, B3 Indoor unit C Piping C 'Connection piping a Housing b Insulating material c Air passage d Upper corner of heat insulating member e Cover e' Substantially parallel plane f Housing part g Contact part

Claims (9)

[Claims] 1. An outdoor unit having a compressor, a four-way valve, an outdoor heat exchanger, an expansion valve, and a pair of piping connections, and a pair of piping connections on two surfaces of a housing having a heat insulating member adhered inside. With
A plurality of indoor units including a connection pipe and an indoor heat exchanger including a refrigerant branch pipe connected between the pipe connection sections,
A pipe connecting part of the outdoor unit and a pipe connecting the pipe connecting parts of the plurality of indoor units sequentially, and formed in the housing, and an air passage of the blown air heat-exchanged by the indoor heat exchanger. An embedded ceiling type air conditioner, wherein the connection pipe is disposed at an upper corner of the heat insulating member and a cover that covers the connection pipe is attached. 2. The ceiling-embedded air conditioner according to claim 1, wherein an accommodation portion for accommodating the connection pipe is formed in an upper corner of the heat insulating member forming the air passage. 3. The air conditioner according to claim 2, wherein the housing portion is formed in a curved shape corresponding to an outer shape of the connection pipe. 4. The cover according to claim 1, wherein the cover has a substantially crescent shape in cross section, and at least upper and lower ends thereof are attached to upper corners of the heat insulating member forming the air passage. The ceiling-mounted air conditioner according to claim 1 or 2. 5. The air conditioner according to claim 4, wherein upper and lower ends of the cover are formed so as to be substantially parallel to an attachment surface of an upper corner of the heat insulating member. . 6. The ceiling-mounted air conditioner according to claim 1, wherein the cover is made of the same material as the heat insulating member. 7. An abutting portion for abutting against a back surface of the cover is provided at an upper corner of the heat insulating member forming the air passage so as to protrude. The ceiling-mounted air conditioner according to claim 4, 5, or 6. 8. A pipe connection part of the indoor unit is provided on two opposing side surfaces of the housing, and the connection pipe and the housing part are formed substantially straight between the pipe connection parts. The ceiling-mounted type air conditioner according to claim 1, 2 or 3, wherein 9. A pipe connection part of the indoor unit is provided on two adjacent side surfaces of the housing, and the connection pipe and the accommodation part are bent substantially at right angles between the pipe connection parts. The ceiling-mounted air conditioner according to claim 1, 2 or 3, wherein the air conditioner is installed.