JPH0536701B2 - - Google Patents

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention has a compressor having a plurality of compression stages, a condenser and an evaporator integrally constructed in one can body, and an economizer. The present invention relates to a refrigerator equipped with a refrigerator.

[Conventional technology]

In refrigerators, in order to save the required space, make the structure compact by sharing parts and simplifying piping, and also to suppress noise from the condenser and prevent mist build-up, the evaporator and condenser A can housing an integrated can body with an economizer attached to the side thereof is known, for example, from Japanese Patent Publication No. 59-52352 and Japanese Utility Model Publication No. 157462-1983.

An example of a conventional device of this type is shown in FIG. 3. An economizer 5 is mounted on the side of a can body 19 that integrates an evaporator 1 and a condenser 2, while the can body 19 is a part of the outer wall. It is attached as an open box-like structure 11, and each part is assembled by welding.

A heat exchanger tube 6 is arranged inside the evaporator 1, and an eliminator 7 is attached above it.
The refrigerant coming out of the throttle mechanism 15 of the communication pipe 14 that enters the lower end of the evaporator 1 is heated and evaporated by the heat transfer tube 6, and then liquid droplets are removed in the eliminator 7.
The electric motor 4 is passed from the suction pipe connection part 8 to the communication pipe 16.
The air is sucked into the first stage of a multi-stage compressor 3 driven by. The refrigerant leaving the compressor 3 passes through the communication pipe 17 and enters the condenser 2 from the discharge pipe connection 9. A heat transfer tube 10 is disposed within the condenser 2, and the cooled and liquefied refrigerant enters the economizer 5 from the throttle mechanism 13. A portion of the refrigerant is vaporized, and after its droplets are removed in the eliminator 12, it is sucked into the intermediate stage of the multistage compressor 3 through the communication pipe 18. The refrigerant liquid accumulated at the bottom of the economizer 5 is transferred to the evaporator 1 through the connecting pipe 14.
sent to.

[Problem that the invention seeks to solve]

The device that integrates the evaporator 1, condenser 2, and economizer 5 described above requires the work of attaching the eliminator 12 built into the economizer 5 to the can body 19, and the operation of attaching the eliminator 12 built in the economizer 5 to the can body 19, and the throttling mechanism 13 provided at the outlet of the condenser 2.
The assembly work of the economizer 5, including the installation work of the can body 19, must be performed as part of the assembly work, and therefore the overall assembly time is considerably longer than when the economizer is not integrated into the can body 19. Naru, Eliminator 12
is attached to the can body 19, the degree of freedom of the worker's working posture is reduced (it becomes difficult to work in a comfortable posture), and the work is time-consuming.
Moreover, it was impossible to avoid the drawback that inspection of welded parts could not be easily performed.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the conventional refrigerator, and to provide a refrigerator which is compact and simple in structure, and which greatly simplifies and facilitates assembly and inspection steps.

[Means and actions for solving problems]

As a means to solve the above problems, the present invention includes a compressor having a plurality of compression stages, an evaporator and a condenser integrally configured in one can body, and a part of the refrigerant is In a refrigerator equipped with an economizer that supplies an intermediate pressure stage of a compressor, the economizer is a box-like structure with an opening that is open at one end, and the inside of the box-like structure is provided with a partition wall provided with a throttling mechanism. The economizer chamber is partitioned to form an economizer chamber, and the eliminator is attached to the economizer chamber via a partition wall, and the outer periphery of the opening of the box-like structure is joined to the side surface of the can body. The assembly work can be completed by simply joining the similarly pre-assembled economizer to the common can body of the evaporator and condenser, which makes the work extremely simple and easy, and inspection is also easy. You will be able to do this.

〔Example〕

Embodiments of the present invention will be described using the drawings.

FIG. 1 shows an embodiment of the present invention, A is an overall configuration diagram thereof, and B is an exploded illustration of a can body 19 common to the economizer 5 in order to clearly explain the features of this embodiment. be. The evaporator 1, condenser 2, multistage compressor 3, and the pipelines between them are the same as those of the conventional ones, and therefore their explanations will be omitted.

The economizer 5 is a box-like structure 1 with one side open.
1. However, the economizer 5 is partitioned by a partition wall 20 provided with a throttle mechanism 13 at its lower end, and the condenser 2 side is closed, forming an economizer chamber 21 inside. With this configuration, the economizer 5 can be easily assembled by simply joining the open side of the box-like structure 11 to the can body 19.

The eliminator 12 is attached to the box-like structure 11 using a can body 19 common to the evaporator 1 and condenser 2.
Can body 1
This can be done in parallel with the assembly in step 9. Therefore, the overall assembly time can be significantly reduced, and the eliminator 12 and the aperture mechanism 1 can be
The installation work in step 3 becomes easier, and inspection after finishing becomes easier. In particular, as shown in Figure 1B,
If the eliminator 12 and the diaphragm mechanism 13 are attached to the partition wall 20 in advance, the work will be made easier.

FIG. 2 shows yet another embodiment of the invention.

The box-like structure 11 of the economizer 5 uses float valves 23 and 25 as throttling mechanisms, and the economizer 5 includes a spray pipe 24 in addition to the eliminator 12 inside.

Therefore, similar to the embodiment of FIG.
3, 25, the spray pipe 24 is assembled in advance and then assembled into the common can body 19. Therefore,
Similarly, work becomes easier and inspection becomes easier.

〔Effect of the invention〕

In the present invention, the economizer is a box-like structure with an opening that is open on one side, and the inside of the box-like structure is partitioned by a partition wall provided with a throttling mechanism to form an economizer chamber, and the economizer chamber serves as an eliminator. Since the eliminator and throttle mechanism are installed through the partition wall and are attached by joining the outer periphery of the opening of the box-like structure to the side surface of the can body, the eliminator and throttle mechanism can be installed very easily, and the eliminator and throttle mechanism can be installed easily. Since the can body and economizer are assembled separately and then assembled, the time required to assemble the entire device is significantly shortened compared to the past, and the work itself is extremely easy, and inspection after completion is also easy. It greatly contributes to improving productivity.

[Brief explanation of drawings]

FIG. 1A is a flow diagram of an embodiment of the present invention, B is an exploded view of a part thereof, FIG. 2A is a perspective view showing another embodiment, and B is a perspective view of the embodiment seen from another direction. Third
The figure is a flow diagram of a conventional refrigerator. 1... Evaporator, 2... Condenser, 3... Compressor,
4... Electric motor, 5... Economizer, 6... Heat exchanger tube, 7... Eliminator, 8... Suction pipe connection part,
9...Discharge pipe connection part, 10...Heat transfer tube, 11...
Box-shaped structure, 12...Eliminator, 13...Aperture mechanism, 14...Communication pipe, 15...Aperture mechanism, 1
6, 17, 18...Connecting pipe, 19...Can body, 20
...Partition wall, 21...Economizer chamber, 23...Float valve, 24...Spray pipe, 25...Float valve.

Claims (1)

[Claims] 1. A compressor having a plurality of compression stages, an evaporator and a condenser integrated into one can body, and an economizer that supplies a part of the refrigerant to an intermediate pressure stage of the compressor. In the refrigerator, the economizer is a box-like structure with an opening open on one side, and the inside of the box-like structure is partitioned by a partition wall provided with a throttling mechanism to form an economizer chamber, and the economizer chamber serves as an eliminator. A refrigerator characterized in that the box-like structure is attached through a partition wall, and the outer periphery of the opening of the box-like structure is joined to the side surface of the can body.