CN2706720Y

CN2706720Y - Air conditioner

Info

Publication number: CN2706720Y
Application number: CN 200420048352
Authority: CN
Inventors: 大泷镇雄
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2003-04-24
Filing date: 2004-04-20
Publication date: 2005-06-29
Anticipated expiration: 2014-04-20
Also published as: JP2004324982A

Abstract

The utility model relates to an air conditioner in a refrigerating cycle. The air conditioner is connected with a plurality of rotary compressors in parallel. The confluence part of a pipe of the compressor can not create pipe cracks. Abnormal sound can also be suppressed. The length of the discharging pipes of the compressors from the opening parts of the discharging pipes of the rotary compressors 1a, 1b to the confluence parts (4) joined by discharging pipes is three times of the height of the compressor. At the same time, the length from the branch parts of the compressors of the suction pipes of the compressors to the suction parts of the compressors is three times of the compressor. Therefore, the vibration attenuation parts are formed.

Description

Air conditioner

Technical field

The utility model relates in the kind of refrigeration cycle, connects the conduits structure of the air conditioner of multiple compressors side by side, especially the vibration interference when preventing to use rolling piston compressor.

Background technology

In recent years, because the space is saved in the raising of living standard and workability, and can the requirement that whole building carry out air conditioning also be improved thereupon, therefore, most ways are to connect multiple compressors side by side and the capacity that increases off-premises station.

Te Kaiping 6-26715 communique, spy open in the flat 11-173686 communique and disclose a kind of air conditioner, and it has the off-premises station that is set up in parallel these multiple compressors.Employed compressor in this existing air conditioner with the off-premises station that is set up in parallel multiple compressors is low pressure reciprocating compressor or screw compressor.The compression section of reciprocating compressor remains on compressor inside with spring.And screw compressor is because the character of its compress mode itself, and the vibration of compressor is less, therefore solves the problem that pipe arrangement vibrates easily, and it can be provided with oil equalizing pipe.

But, if use common used rolling-piston-type (rotary) compressor in room air conditioner to call in the following text, then rotary compressor vibrates greatlyyer owing to the character of its compress mode, and directly compression section welds together with compressor main body, and therefore vibration becomes greatly.

Many this rotary compressors are set and make its when running simultaneously, the conduct vibrations of each compressor is to pipe arrangement, in the part of converging of pipe arrangement, and conduction and the vibration phase mutual interference amplification that arrives, thus cause pipe arrangement to chap, and produce unusual sound.

The utility model content

The utility model provides a kind of air conditioner, and this air conditioner uses at the common used rotary compressor of room air conditioner, and can avoid chapping in the fluidic junction of compressor pipe arrangement, and can suppress to produce unusual sound.

Air conditioner of the present utility model, make from the discharge pipe export department of each rotary compressor to each discharge the length of discharge pipe arrangement of each compressor of the fluidic junction that pipe arrangement converged more than the twice of compressor height, make from the branching portion told to each compressor of the suction line of each compressor to more than the twice of length at each compressor of the suction portion of each compressor, and form U font, circle or W font respectively.

Description of drawings

Fig. 1 is the refrigeration cyclic graph of air conditioner in the embodiment of the present utility model.

Fig. 2 is near the piping diagram of compressor of air conditioner in the embodiment of the present utility model.

The specific embodiment

With reference to the accompanying drawings an embodiment of the present utility model is described.

(embodiment)

In Fig. 1, the structure of flow of refrigerant order describes during to cooling operation.

, and converge by being separately positioned on check valve 3a, the 3b on the discharge pipe by compressor 1a, 1b refrigerant compressed, enter separator 5 then at fluidic junction 4 places of each discharge pipe.In separator 5,, condensing by carrying out in the cross valve 6 inlet chamber outer heat-exchangers 7 by the cold-producing medium that oil separates, form liquid refrigerant, by expansion valve 8 it is reduced pressure then, and guide in the indoor set, in indoor heat converter 9, evaporate by connecting pipings.By 9 vaporized gas cold-producing mediums of indoor heat converter, guide to outdoor by connecting pipings, and enter secondary accumulator (sub accumulator) 10 by cross valve 6, carry out gas liquid and separate, return accumulator 2a, the 2b of each compressor 1a, 1b then at branching portion 11 by suction line.The oil of separating in separator 5 flows back to the pipe arrangement between cross valve 6 and the secondary accumulator 10.

Compressor 1a, the 1b of kind of refrigeration cycle and separator 5, secondary accumulator 10 and the pipe arrangement between them in Fig. 2 presentation graphs 1.In output one side, bend pipe (trap) 12a, the 12b of U font is set respectively on the discharge pipe between check valve 3a, 3b and the fluidic junction 4, it highly approximately equates with the height of compressor.Then, sucking a side, bend pipe 13a, the 13b of U font is set respectively on the suction line between accumulator 2a, 2b and the branching portion 11, it highly approximately equates with the height of compressor.In addition, difference is approaching mutually between fluidic junction 4 and separator 5, secondary accumulator 10 and the branching portion 11, and links together by short pipe arrangement.

Effectiveness in vibration suppression to the piping shape of using above-mentioned structure describes below.

If compressor 1a, 1b running, then compressor 1a, 1b vibrate to direction of rotation.Discharging a side, its vibration does not almost weaken by check valve 3a, 3b, but conducts to the inlet of the bend pipe of U word shape.Then, in the bend pipe of U word shape, be the spring beam effect that fulcrum produces by its long line part elasticity and with the bottom of U word shape, this vibration is absorbed and weakens.

In other words, the long line part of the bend pipe of U word shape constitutes vibration attenuation portion by the vertical elasticity and the elasticity of torsion.The outlet of the bend pipe of U word shape links to each other with fluidic junction 4, and the vibration that produces has become very little in the bend pipe of U word shape, and fluidic junction 4 is born the big quality of the separator 5 that connects with short pipe arrangement, vibration hardly.Sucking a side, its vibration weakens hardly by accumulator 2a, 2b, but conducts to the inlet of bend pipe.But in the bend pipe of U word shape, the bottom that reaches with the U word shape by its long line part elasticity is the spring beam effect that fulcrum produces, and this vibration is absorbed and weakens.The outlet of U word shape bend pipe links to each other with branching portion 11, and the vibration that produces has become very little in the bend pipe of U word shape, and branching portion 11 bears the big quality of the accumulator 10 that is connected by short pipe arrangement, vibration hardly.

As with fluidic junction 4 or branching portion 12 after the vibration damping, be fixed on the body by buffer units such as rubber, then residual vibration can be absorbed by the quality of body.So just can more effectively reduce compressor 1a, the 1b influence that vibration brought separately.

In the present embodiment, form discharge pipe, suction line with the U word shape.

In addition, they also can form according to the shape of long straight line, circle or W word, and can obtain same effectiveness in vibration suppression.

As above explanation, by air conditioner of the present utility model, make from the discharge pipe export department of each rotary compressor to each length of discharge pipe arrangement of each compressor of discharging the fluidic junction that pipe arrangement converges more than the twice of compressor height, make length more than the twice of each compressor height from the branching portion told to each compressor of the suction line of each compressor to the suction portion of each compressor.So just can weaken the vibration of compressor, reduce conduct vibrations to fluidic junction, branching portion, can use common used rotary compressor in room air conditioner, and can avoid producing the pipe arrangement be full of cracks, and can suppress to produce abnormal sound in the fluidic junction of compressor pipe arrangement.

In addition, because above-mentioned fluidic junction or above-mentioned branching portion are fixed on the body, therefore, can more effectively reduce the influence that vibration brought of each compressor 1a, the 1b that carry out vibration damping with long discharge pipe or suction line.

Vibration attenuation of the present utility model portion can reduce the vibration interference of the air conditioner that uses rotary compressor.And vibration attenuation of the present utility model portion also can be used for the refrigerating plants such as freezing or freezer of a plurality of rotary compressors of needs.

Claims

1. an air conditioner is characterized in that, has many rotary compressors that connect side by side in a kind of refrigeration cycle;

With the discharge pipe that described fluidic junction is connected, this discharge pipe from the discharge pipe export department of described each rotary compressor to each discharge the length of the fluidic junction that pipe arrangement converges, more than the twice of described rotary compressor height; And

The suction line that is connected with described branching portion, the length of this suction line from the branching portion told to described each rotary compressor of the suction line of described each rotary compressor to the suction portion of described each compressor is more than the twice of described each rotary compressor height.

2. air conditioner as claimed in claim 1, it is characterized in that, at the discharge pipe export department of compressor and the discharge pipe arrangement between the fluidic junction, and the vibration attenuation portion that is made of spring beam is set on the suction portion of compressor and the suction pipe arrangement between the suction line branching portion.

3. air conditioner as claimed in claim 2 is characterized in that, the vibration attenuation portion that is made of described spring beam constitutes with the moulding pipe arrangement of U font, circle or W font.

4. air conditioner as claimed in claim 1 is characterized in that, in described fluidic junction and the described branching portion at least one, is fixedly installed on the part that links to each other with described air conditioner main body.