JPS5883159A - Refrigerating cycle device for air conditioner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a refrigeration cycle device for an air conditioner capable of cooling/heating operation, and in particular, one of its objects is to extend the life of a compressor.

A conventional refrigeration cycle device of this type is constructed as shown in Fig. 1. During cooling operation, refrigerant is compressed by a compressor 1 through a four-way valve 2.
It is condensed by the outdoor heat exchanger 3. At this time, a part of the refrigerant is discharged from the compression intermediate stroke of the compressor 1 through the bypass port 4 and the check valve 6 provided at the bypass port σ5.
9 inhalation flows into 1 rule.

In this case, the refrigerant gas discharged from the intermediate compression stroke of the compressor 1 to the bypass circuit is at a high temperature, and the refrigerant gas at this temperature is mixed with the refrigerant gas from the indoor heat exchanger 8 and compressed through the four-way valve 2. As the refrigerant flows into the compressor 1, the suction temperature of the refrigerant increases, which has a negative impact on the motor efficiency and life of the compressor 1. At the same time, during overload operation, the refrigerant discharge temperature becomes abnormal, which shortens the life of the compressor. It had shortcomings such as shortening the length.

In the present invention, during cooling operation, the bypass gas discharged from the intermediate compression stroke of the compressor is moved unilaterally by a separately provided heat exchanger and flows into the suction, thereby reducing the suction temperature of the refrigerant. - This eliminates the drawbacks of the conventional cryocycle structure described above.

Hereinafter, the present invention will be explained with reference to FIG. 2 of the accompanying drawings showing one embodiment of the present invention.

, in Figure 2? 'lj Freeze Recycle (111
, t+', l i old ring 1, four-way valve 2, outdoor heat exchanger 3, reduction 11-・ya"': ii'f near, indoor heat exchanger 8 is arranged in a ring shape, iil! result 3 Ji , 4/ko1゛1kaijl
The intermediate part of the L decompressor 7 and the Ll compressor 1 are connected by the first part 1, the cut 5:<the internal heat returner 8 and the four sides +P2 [circle]. fil pIX and l-f,
: , f; [ii t, U 1's/<Ibasbo-1・4
Id bypass tube 6 is removed [-sa 1, i's], jsu 1
1 is provided with a check valve 6 and a heat exchanger 10, respectively, Ii
- In the 13 upper 6 configuration with C, heating rotation IR+'k
1) The refrigerant gas obtained from Part 1 is as follows:
Four directions j [2 ro 1 bend, shi; (condenses in the internal heat exchanger 1 condenser 8. In this case, ・kui ・ tsusu kon 5 becomes a high pressure specific force, and the pie nisport 4 of the flattening i wi 1 LI) intermediate pressure V
In order to become a business, 1゛r river 1. Well 6 is closed, and refrigerant l', Mj, and Al1 are injected into bypass pipe 5.

When the air conditioner rotates normally, the bypass pipe 6 becomes a
11-IE force', L,,'J I+To'/'i:
b fl, the check valve 6 is opened. yC ending 1',
J rjlM refrigerant gas is bypass bow 1/4 to 1
11 output 7\11, 1st completion - + lj [(Follow step 5, heat is radiated in the heat exchanger 10, becomes low tl + 1', gas, mixed with refrigerant gas from the indoor heat exchanger 8, suction 1 rule lead to or take away.

Therefore, by providing a heat exchanger 10 in the bypass pipe of the capacity control r10, the heat exchanger 10 is provided to allow the heat exchanger 10 to be discharged from the intermediate compression stroke of the compressor 1 during cooling operation. ! It is possible to cool the L gas and flow it into the suction tank as a low-temperature gas, and by reducing the refrigerant suction temperature, the efficiency of the motor with a specific contraction value of 1 is improved. In addition, the compressor's operation during single station load is improved.

As is clear from the above implementation, the four freezing leakage devices f'-1', lji for the air conditioner according to the present invention:
Power: Ij11 (A heat exchanger is installed in the bypass pipe of the tit, which cools the high-temperature gas discharged from the middle compression stroke of the compressor during operation, and inhales the low-temperature gas as capital gas. This makes it possible to reduce the refrigerant suction volume by one generation, thereby improving the efficiency of the compressor motor and extending the life of the compressor. 1, 4, Figure 71+1 (7)
Figure 1 is a system diagram of a conventional refrigerated recycle, and Figure 2 is a system diagram of a recycle according to one embodiment of the present invention.

1...pressure m1 machine, 2...four forces, 3
-...': 9-tube heat exchanger, 4... Bypass boat, 6... Bypass pipe, 6... Reverse 11-
Masu, 8... Indoor heat exchanger 11 covers: ;, 10...
・・Heat exchange disease 1゜Name of agent 411 person Nakao 11 name]
1 other person Figure 2 7

Claims (1)

[Claims] A compressor, a four-way valve, an outdoor heat exchanger, a pressure reducing device, and an indoor heat exchanger are sequentially connected, and a liquid injection circuit is provided to connect the middle part of the pressure reducing device and the compressor to form a heat pump type. A refrigeration cycle is constructed, and a heat exchanger circuit is provided to connect the indoor heat exchanger, the middle part of the four-way valve, and the compressor, and a heat exchanger is installed in the bypass circuit to perform cooling operation. A refrigeration cycle device for an air conditioner that cools the refrigerant gas that is completely discharged from the intermediate compression stroke of the compressor and flows it to the suction side.