JPS60178256A - Refrigeration cycle - 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] Field of Application of the Investigation] The present invention relates to a refrigeration cycle using a gas bypass circuit and a differential pressure two-way valve, and in particular, the present invention relates to a refrigeration cycle that uses a gas bypass circuit and a differential pressure two-way valve. Suitable for reducing the load when starting up the compressor. Furthermore, it is suitable from the viewpoint of cost reduction.

Background of the Invention] A conventional refrigeration cycle is shown in Fig. 1, which includes a compressor 1, a condenser 2, a pressure reducer 6, an evaporator 4, a reverse IE valve 5, an I4f magnetic valve 6 for a stoke knob, and a balance. The solenoid valves 7 are sequentially connected by refrigerant pipes. In this refrigeration engine, when the compressor 104 is in operation, the stop solenoid valve 6 is open and the balance solenoid valve 7 is closed, and the refrigerant discharged from the compressor 1 is transferred to the condenser 2, pressure reducer 6, evaporator 4,
Cooling is performed by circulating in the order of check valve 5. When the compressor 1 is stopped, the stop solenoid valve 6 is closed and the balance solenoid valve Z is open. By performing such valve control, when the operation of the compressor 1 is completely stopped, there is a problem in the condenser 2. The refrigerant flows into the evaporator 4, and the refrigerant does not flow into the evaporator 54 from the condenser 2 immediately after the compressor 1 starts operating.
This eliminates the drawbacks of slow cooling down and the drawbacks that high-temperature gas refrigerant flows into the evaporator 4 from the condenser 2 and warms the C1 evaporator when the compressor is stopped for 1 hour. In addition, by opening the direct magnetic valve 7 for the compressor 1 stop and 7 for the city, the IE noise difference before and after the compressor is eliminated.
There is a characteristic that 'Jf' is iiJ function after one activation of 'Jf'. Furthermore, while the compressor 1 with five check valves is stopped, the high-pressure refrigerant returns to the evaporator 4.
．． There is L f. In this case, the refrigeration leakage current C1t↓, while the current J rate goes -1-, on the other hand, the magnetic valve becomes 2I1T, and the "power consumption" in the core wire If rtfl 'T is reduced. However, there was a big but small drawback that it caused an increase in RP value.

[Purpose of the invention]

The purpose of the present invention is to eliminate the pressure difference after the +IJ of the compressor 1 when the compressor 1 does If+J (7) to prevent the pressure difference after the compressor 1 from flowing into the evaporator 4. It has a million valves, and the efficiency during 1 point turn is also low [Sazu vC1 consumption [
Stock] Force reduction, compression 1'! ! l! 1's small IK, Ki fB
Our objective is to provide a frozen Nycle that can simplify the JJ system (δ) and reduce costs.

(Summary of the Invention) According to the present invention, while the compressor is running, the gas refrigerant on the artificial side is returned to the suction side of the compressor because there is no refrigeration effect even if the gas refrigerant is passed through the evaporator. When the compressor is stopped, hot gas is bypassed to the compressor suction side by the gas balance circuit, so the I pressures before and after the compressor are balanced. Here, the narrow tube for bypass also exchanges heat with the condenser to prevent liquid refrigerant from returning to the compressor. Furthermore, when the compressor 1 is stopped, a differential pressure two-way valve that operates due to the pressure rise generated by the pressure balance between the low pressure side and the high pressure side prevents pot gas from flowing into the evaporator from the high pressure side. It increases the effectiveness of the force.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 2, 6, 4, and 5. FIG. 2 shows the compressor 1 in operation, with 1 being a compressor, 2 a condenser, 6 a pressure reducer, 4 an evaporator, 5 a reverse IE valve, 8 a gas-liquid separator, and 9 is differential pressure type 2
14 is a communication pipe, 15 is a gas balance capillary tube for heat exchange with the condenser 2, and 16 is a differential pressure drawing capillary tube. These are connected as shown in Fig. 2 to constitute a refrigeration cycle. ing. In such a frozen leak, compression 1
When the first valve 1 starts rolling, the first valve internal chamber 10 of the differential pressure two-way valve 9 becomes low pressure, and a differential pressure is generated between the first valve internal chamber 11 and the second valve internal chamber 11, and the differential pressure is caused by the force of the leaf spring 18. The diaphragm 16 is pushed up and the stoknob Jζ-rule 12 opens the boat. Further, in the gas-liquid separation 58, the gas refrigerant and the liquid refrigerant are molecularly separated, and the gas refrigerant e passes through the gas balance capillary tube 15 and is bypassed to the suction side of the compressor 1. Here, the capillary Ir+lIl tube 15 for gasparanos
...The liquid refrigerant is exchanged with the condenser 2, and the liquid refrigerant is transferred to the compressor 1.
I am in th L to prevent returning to . On the other hand, the liquid refrigerant passes through the differential pressure valve 2 and the open valve 9, is depressurized by the pressure reducer 6, and flows into the evaporator 4. Here, the gas refrigerant has no cooling effect in the evaporator 4, and the amount cooled by the evaporator 4 becomes a loss of enotarubi. Therefore C1
When such frozen Nycle is used, there is an advantage that the cold fJ+FJ/Talbi increases by the above-mentioned FJ/Talpi difference. Next, Fig. 6 shows a state in which the compressor 1 is stopped at one stop. When the compressor 1 stops, the gas balance +t
The high pressure side and low pressure side before and after the compressor 1 are balanced through the blue 15.

That is, the pressure of the suction 111++ of the compression 1 collapse 1, which is the connection of the differential pressure suction g16, increases by the width V, and until now C1
Press C'v> differential pressure 2 squares 9 die A flamm 16 gold and fixed to shaft 17 7 Histonop ball 12 closes the boat. As a result, condenser 2 on the high pressure side! Does the inflowing pot gas evaporate? ! It is possible to block the flow to S4. As described above, according to the present invention, air separation for gas bypass is possible. ! By using S8 and differential pressure type 2-way offshore 9, compression (during intermittent operation)
When the compressor 1 stops +h, the flow of hot gas from the high pressure side θ1 to the evaporator 4 is prevented to reduce the power consumption meter,
Furthermore, by balancing the differential pressure generated between the discharge side and the suction side of the compressor 1, it becomes possible to reduce the starting torque of the compressor 1. That is, compressor 1
About, miniaturization, and rise! 4! This also leads to cost reduction through the simplification of I equipment. In addition, capillary R1 for gas vane/gas
Since heat exchange is performed in the 57 condenser 2, there is no fear that the liquid refrigerant will return to the compression chamber 1-\ and have an adverse effect.

〔Effect of the invention〕

According to the present invention, in the refrigeration cycle during intermittent operation, C1
When the compressor 1 is stopped +hL, the differential pressure two-way valve 9 closes, resulting in high pressure 111! It is possible to prevent hot gas from flowing into the evaporator 4 from the refrigerator, and to cut off the heat load entering the refrigerator, thereby reducing the amount of food consumed. By passing the VCl-2 into the liquid separator 8, the pressure difference generated before and after the compressor 1 can be balanced in a short time, and the starting torque of the compressor 1 can be reduced. That is, it is possible to reduce the cost by 1 person and total d1 by downsizing the compressor 1 and simplifying the starting device t.

Next, while the compressor 1 is operating, the gas refrigerant separated by the gas separator 8 is bypassed to the gas bypass capillary tube 15V-C1 to the suction side of the compressor 1, and flows into the evaporator 4. Since the amount of gas refrigerant to be used decreases, the gas refrigerant is transferred to the evaporator 4.
It is possible to operate without losing the amount of heat energy that goes up to ＠ degrees, and it is possible to reduce energy consumption. Here, heat is exchanged with the gas balance capillaries 15i, j and the condenser 2, and when the liquid refrigerant passes through the gas balance capillary #15, it is evaporated into gas refrigerant and the liquid refrigerant returns to the compressor 1. Defense +h Stay in L.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a conventional refrigeration cycle. FIG. 2 is an explanatory diagram of the refrigeration cycle of the present invention divided while the compressor is in operation, and FIG. 6 is an explanatory diagram of the refrigeration cycle of the present invention when the compressor is stopped. Figure 4 is a sectional view of a differential pressure type two-way valve.
FIG. 5 is a Mollier diagram illustrating the present invention. 1...Compressor, 2...Condenser, 6...Reducer, 4...
...Evaporator, 5...Reverse I valve, 6... Semi-magnetic valve for stop, 7... Magnetic valve for Balanos, 8... Gas-liquid separator, ? ...Differential pressure type two-way valve, 10..First valve inner chamber, 11.
...Second valve inner chamber, 12...Stop ball, 16...
・Diaphragm, 14...Communication tube, 15...Capillary tube for gas balance, 16...Capillary 'q for drawing differential pressure, 17
-° shaft rod, 18° leaf spring. 1 mouth'F-2 mouth't-4 mouthf 5 mouthwork〉7ノL,hie--

Claims (1)

[Claims] 1. A compressor, a condenser, a pressure reducer, and a reverse valve are connected in sequence.
In the refrigerating system, a liquid separator is installed at the condenser outlet, and a gas balance capillary tube for heat exchange with the condenser is connected from the top of the gas-liquid separator between the compressor and the check valve. A differential pressure type two-way valve is further provided between the gas-liquid separator and the pressure reducer, which is connected to a differential pressure lead-in pipe led from between the check valve and the compressor. Refrigeration IF cycle. 2. It is obvious that the compression 1 is a rotary type compressor. ・The range of 11°H blue as described in item 1/) Refrigeration cycle.