JP3213451B2 - Refrigeration equipment condenser - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a condenser for a refrigerating apparatus having a desupercircuit and a condenser circuit and formed in a plurality of upper and lower stages.

2. Description of the Related Art In a conventional refrigerator or refrigerator, the inside of a refrigerator is divided into two compartments by a partition plate, and each compartment has a refrigerating system.
While disposing the vessel, a compressor constituting a refrigeration system independent two systems with each evaporator <br/> the upper machine room of the main body, condenser, formed by disposing the cooling fan refrigeration system Some have. As a condenser of such a refrigerating apparatus, for example, there is a condenser having a structure in which condensers of respective refrigerating systems are vertically stacked in two stages, as disclosed in Japanese Patent Laid-Open No. 3-152370.

[0003] Recently, R2 has been used as a refrigerant in place of CFC, which has been designated as a specific CFC due to the problem of depletion of the ozone layer.
However, when this R22 is used in such a refrigeration system, the discharge speed of the compressor increases due to the characteristics of R22.
Cool the compressor in the stage condenser so that it does not become too hot
And a disperser circuit for each. This
Here, the disper circuit is a high-temperature compressor compressed by a compressor.
The compressed refrigerant is cooled, and the cooled refrigerant (high-temperature gas refrigerant)
To cool the compressor motor, seal the compressor again
The motor in the closed container is cooled again.
The refrigerant whose temperature has risen is cooled by a condenser and condensed and liquefied.
Things.

When the desuper circuit is provided as described above, the upper condenser 1A is provided above the condenser 1 shown in FIG.
A condenser circuit 2 and an upper desupercircuit 3 are disposed, and a condenser circuit 4 and a lower desupercircuit 5 of a lower condenser 1B are disposed below the condenser 1. The condenser 1 has four circuits 2 in total. , 3,4,5.

On the other hand, when assembling the condenser 1 or assembling it into the main body, the refrigerant inlet 2 of each of the circuits 2, 3, 4, and 5 is used.
a, 3a, 4a, 5a and refrigerant outlets 2b, 3b, 4b,
5b, a manifold 6 for closing each of the circuits 2, 3, 4, 5 is detachably attached.
a, 3a, 4a, 5a, a gas injection device (not shown) is attached to the manifold 6, and each of the circuits 2,
Gas is injected into 3, 4, 5 to check the airtightness of each circuit 2, 3, 4, 5.

[0006]

However, in such a conventional refrigeration system condenser, a total of eight manifolds are required at the time of airtightness inspection of four circuits, and when these manifolds are mounted, a refrigerant inlet and a refrigerant inlet are required. When the refrigerant outlets are close to each other, there is a problem that the arrangement of each circuit is restricted because the manifolds may come into contact with each other and become unable to be mounted. In addition, eight manifolds must be installed for each airtight inspection,
In addition, since gas must be injected into each of the four circuits, there is a problem that it takes time to perform an airtight inspection.

Accordingly, the present invention has been made to solve such a problem, and the restriction on the arrangement of the condensing circuit and the displacing circuit can be reduced.
It is an object of the present invention to provide a condenser of a refrigeration apparatus that can reduce the trouble of an airtight inspection.

[0008] The present invention relates to a high-temperature compressor compressed by a compressor.
Cools the refrigerant, and cools the compressor motor with the cooled refrigerant.
The refrigerant is returned to the sealed container of the compressor again
Dispersion formed by heat-dissipating pipes
Return to the compressor and cool the motor to
Formed with heat radiation pipes provided to condense and liquefy the rising refrigerant
And a condensing circuit.
In a refrigerating apparatus having a plurality of upper and lower condensers each including a compression circuit , a condenser circuit of an upper condenser and an upper disper circuit are provided.
And the condenser circuit of the lower condenser and the lower disper circuit
To each other with short-circuit piping.
However, the disper circuit and the condensing circuit form a single conduit.
Can be connected to each other to form one circuit
It is said that.

[0009]

It is formed by upper and lower condensers, and at the time of the airtight inspection of the condenser, the condenser circuit of the condenser and the desuper circuit, the condenser circuit of the upper condenser, the desuper circuit of the upper condenser and the condensation of the lower condenser are formed. Since the circuit and the lower super circuit are connected by a short-circuiting pipe, each condenser can be subjected to an airtight inspection as one circuit, thereby reducing the trouble of the airtight inspection.

[0010]

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

FIG. 1 is a front view of a refrigerator having a condenser of a refrigerator according to an embodiment of the present invention, and FIG. 2 is a side sectional view thereof. 4, the same reference numerals as those in FIG. 4 indicate the same or corresponding parts.

In FIGS. 1 and 2, reference numeral 7 denotes a refrigerator-freezer main body (hereinafter referred to as a main body), and reference numeral 8 denotes a storage chamber 10 formed inside the main body 7 and divided into two compartments by a partition plate 9. It is a front door for opening and closing. FIG. 2 shows only one storage room 10.

Reference numeral 11 denotes an upper machine room formed on the upper portion of the main body 7, and the upper machine room 11 is provided with a condenser 1, a compressor 12, and a condenser fan 13. The condenser 1, the compressor 12 and the condenser fan 13, and the cooler 14 and the cooler fan 15 arranged above the top plate 10 a of the storage room 10 constitute a refrigeration system. In addition, 16 is a plurality of shelves vertically arranged in the storage room 10, and 16a is a shelf support.

By the way, as shown in FIG. 3, the condenser 1 arranged in the upper machine chamber 11 is, for example, an upper condenser 1A at the time of an airtightness inspection performed at the time of assembling and assembling into the main body 7. Condenser circuit 2 formed by heat-dissipating piping
The refrigerant inlet 2a is connected to the refrigerant outlet 3b of the upper disper circuit 3 formed by a heat-dissipating pipe by a short-circuit pipe 17 , and formed by a heat-dissipating pipe of the lower condenser 1B. The refrigerant inlet 4a of the condensing circuit 4 and the refrigerant inlet 5a of the lower disper circuit 5 formed by the heat radiating pipe are connected to the short pipe 1
7 to be connected.

In the short-circuit pipe 17,
By connecting the upper condenser circuit 2 and the upper disperser circuit 3 and the lower condenser circuit 4 and the lower disperser circuit 5, the upper two circuits 2 and 3 and the lower two circuits 4 and 5 of the condenser 1 are connected. One circuit can be connected to each other.

At the time of the airtight inspection, the mounting position of the manifold 6 is such that the upper two circuits 2, 3 and the lower two circuits 4, 5 each constitute one circuit of the condenser 1.
The refrigerant outlet 2b of the condenser circuit 2 of the upper condenser 1A, the refrigerant inlet 3a of the upper desuper circuit 3, the refrigerant outlet 4b of the condenser circuit 4 of the lower condenser 1B, and the refrigerant outlet 5b of the lower desuper circuit 5 are provided. . That is, the number of the manifolds 6 used at the time of the airtight inspection is four.

By halving the number of the manifolds 6 used in this way, the manifolds 6 do not come into contact with each other, so that restrictions on the arrangement of the condenser circuits 2, 4 and the desupercircuits 3, 5 are reduced. You can do it.

In the condenser of the refrigerating apparatus thus configured, when performing an airtight inspection at the time of assembling the condenser 1 or assembling the condenser 1 into the main body, first, the short-circuit pipe 17 is used.
Connects the upper condensing circuit 2 and the upper desupercircuit 3 and the lower condensing circuit 4 and the lower desupercircuit 5,
The upper two circuits 2, 3 and the lower two circuits 4, 5 of the condenser 1
Are connected as one circuit.

Next, the refrigerant outlet 2b of the condenser circuit 2 of the upper condenser 1A, the refrigerant inlet 3a of the upper desuper circuit 3, the refrigerant outlet 4b of the condenser circuit 4 of the lower condenser 1B, and the refrigerant outlet of the lower desuper circuit 5 Attach manifold 6 to 5b.

Thereafter, a gas is injected into the upper circuit of the condenser 1 from the manifold 6 at the refrigerant inlet 3a of the upper desupercircuit 3, for example, by a gas injection device. As a result, the gas is filled from the upper dispersing circuit 3 into the upper condensing circuit 2 via the short-circuit pipe 17, and the gastightness of the two circuits 2 and 3 is checked by one gas filling. Will be

Next, a gas is injected from the manifold 6 at the refrigerant outlet 5b of the lower desupercircuit 5 by a gas injection device. As a result, the gas is filled from the lower desupercircuit 5 through the short-circuit pipe 17 into the lower condensing circuit 4, and the gas tightness of the two circuits 4 and 5 is checked by one gas filling. Will be

As described above, during the airtight inspection, the upper condenser 1
The condensing circuit 2 of A and the upper desuper circuit 3 and the condensing circuit 4 of the lower condenser 1B and the lower desuper circuit 5 are connected by short-circuit pipes 17 to form one circuit each, so that two gas flows are performed. 4 circuits of condenser 1 by injection
4, 5 airtightness inspections can be performed. In addition, since the number of circuits for performing the airtight inspection is two as described above,
Four manifolds 6 can be used.

[0023]

As described above, according to the present invention, at the time of checking the airtightness of the condenser of the refrigerating apparatus, the condenser circuit of the upper condenser, the desuper circuit of the upper condenser and the condenser circuit of the lower condenser are connected by the shorting pipe. Since the lower-stage desupercircuits are connected to each other to perform the airtightness inspection as one circuit, the trouble of the airtightness inspection can be reduced. In addition, by connecting the condenser circuit and the desupercircuit in this manner, the number of manifolds to be used becomes four, and the restriction on the arrangement of the condenser circuit and the desupercircuit can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view of a refrigerator including a condenser of a refrigerator according to an embodiment of the present invention.

FIG. 2 is a side sectional view of the refrigerator.

FIG. 3 is a side view of the condenser.

FIG. 4 is a side view of a conventional condenser.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Condenser 2, 4 Condenser circuit 3, 5 Desuper circuit 6 Manifold 17 Short circuit piping

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-105197 (JP, A) JP-A-1-302079 (JP, A) Fully open sho 59-120875 (JP, U) 79085 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F25B 39/04

Claims (1)

(57) [Claims] 1. A high-temperature compressed refrigerant compressed by a compressor is cooled.
Then, in order to cool the compressor motor with this cooled refrigerant,
Install the refrigerant again in the closed vessel of the compressor.
Dispersion circuit formed by heat radiation pipes
Returned to the compressor, cooling the motor
The condensation formed by the heat-dissipating pipe provided to condense and liquefy the medium
Compression circuits, these disperser circuits and condensing circuits
In a refrigeration system equipped with upper and lower condensers, the condenser circuit of the upper condenser and the upper
The lower condenser circuit and the lower disper circuit,
Each was connected with a short-circuit pipe, and the condenser at each stage
Disperser circuit and condenser circuit communicate as one line
A condenser for a refrigeration system, characterized in that each of the condensers can be formed as one circuit .