JPS6014060A - Differential pressure type three-way valve - 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 Invention] The present invention relates to a three-way valve that uses the differential pressure between the condensers to open and close two ports to change the flow from one direction to two directions. It is.

[Prior art]

When a conventional refrigeration cycle is shown in Figure 1, 1 is a compressor, 2
is a condenser, 6 is a pressure reducer, 4 is an evaporator, 5Q is a reverse valve,
11 straight square for 6t stop, 7t; 1-balance solenoid valve. In such a refrigeration cycle, 1] While the three-compressor 1 is operating, the stop valve 6 is open, the balance solenoid valve 7 is closed, and the refrigerant from compressor 1 to 1 is 1.
The pseudo condenser 2, the pressure reducer 6, the evaporator 4, and the reverse valve 5 are rotated in this order.
Cool down. While the compression machine 1 is stopped, the stop solenoid valve 6 is closed and the balance solenoid valve 7 is opened. By doing this, the liquid refrigerant in the condenser 2 will flow into the evaporator 4 while the compressor 1 is stopped, and the refrigerant will not flow into the evaporator 4 from the condenser 2 immediately after the start of operation. This eliminates the drawbacks of poor cooling and the drawbacks that high-temperature gas refrigerant flows into the evaporator 4I1111 from the condenser 2/l) and warms the evaporator 4 during stoppage. Father, by opening the balance solenoid valve 7 while the compressor 1 is stopped, the pressure difference mentioned above in the compressor 1 disappears, and the compressor 1 starts up! It has the feature that it can be made lighter. The check valve 5 prevents the high pressure gas refrigerant from returning to the evaporator 4 side during stoppage. However, although the refrigeration cycle is more efficient, it has a major disadvantage in that it requires two solenoid valves, which increases the cost.

[Purpose of the invention]

To provide a new differential pressure type three-way valve that senses the operation of the Fi compressor 1 by the pressure difference in the condenser 2 and opens and closes the flow path, and is inexpensive and can open and close without turning on electricity. It is.

[Summary of the invention]

That is, in the present invention, since the refrigerant flows through the condenser 2 while the compressor 1 is in operation, the pressure of the refrigerant increases.

We devised a differential pressure three-way valve that uses the force of this pressure difference to move the conventional stop solenoid valve 6 and balance solenoid valve 7. When the compressor 1 is stopped, there is no pressure drop of the refrigerant flowing in the condenser 2, so the differential pressure disappears, which causes the compressor to open and close in the opposite manner to that during operation.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 2 and 6. Fig. 2 shows the compressor 1 in operation, with reference numeral 8 the valve body, 9 the differential pressure lead-in pipe, 10 the refrigerant inflow pipe, 11 the refrigerant outflow pipe, 12 the bypass pipe, 16 the outer bellows, 14
1514 is an inner bellows, 1514 is a ball for a straddle, 16 is a bypass ball, 17 is a mounting base, 18 is a flow path, and the same symbols indicate the same items as the conventional product. Such a differential pressure type three-way valve applies the high pressure at the inlet of the condenser 2 to the meter bellows 16 and the inner bellows 14 through a differential lead-in pipe 9.
-rlI/ is drawn in. Since the pressure coming out of the condenser 2 is low, it flows in from the refrigerant inflow station 10 and the IF force inside the bellows is high, so the mounting base 17 is pushed upward and the bypass ball 16 blocks the bypass pipe 12. . Since the refrigerant outflow pipe 11 is opened, the refrigerant flows to a reduced pressure of 4 B. FIG. 6 shows a state in which 1 is stopped at compression 14 +J-, and the compression 14 is stopped.

Since the differential pressure in the condenser 2 disappears, the pressure inside the bellows and the outlet pressure of the condenser 2 become equal, the first prong is pushed in the ``T'' direction, the stop ball 15 closes the outflow gll, and the bypass pipe is closed. Since 12 people and 1 unit are being punished, the refrigerant is bypassed to the low pressure side of the compressor 1 to balance the pressure.By adopting this structure, a valve that does not use a choking valve can be used in place of the solenoid valve 2. You can do it.

〔Effect of the invention〕

The valve body is provided with an inflow pipe 11, a bypass pipe 12, and a differential pressure lead-in pipe 9. Inside, a stop ball is provided on the top of the mounting base 17, and the pressure of the differential pressure lead-in pipe 9 is drawn into the bellows and condensed. By moving the mounting base 17 in the manner r due to the difference between the outlet pressure of the container 2, the stop solenoid valve and the balance c! The two functions of the required valve can be replaced by one differential pressure valve, and one operation can be performed without electric manual power.
d It is also a valve with excellent mental strength.

[Brief explanation of the drawing]

FIG. 1 shows a conventional refrigeration cycle, FIG. 2 shows a differential pressure three-way valve 1-valve refrigeration cycle of the present invention with one compressor in operation, and FIG. 6 shows a refrigeration cycle of the present invention with one compressor in the middle. 1... Compressor, 2... Condenser, 6... Pressure reducer, 4
... Evaporator, 5... Check valve, 6... Stop solenoid valve, 7... Balance valve, 8... Valve body, 9...
... Differential pressure drawing R110... Refrigerant inflow, 11...
Outflow pipe, 12... Bypass pipe, 16... Outer bellows, 14... Inner bellows, 15... Ball for stop, 16... Ball for bypass, 17... Mounting base, 18
... Distribution path. ￥;+ (2) Rod 2 (2) TJ3 (21 Continued from page 10 Inventor Fumi Sumi - Hitachi Ltd. Tochigi Factory, 800 Oaza Tomita, Ohira-cho, Shimoga-gun, Tochigi Prefecture0 Inventor Nakareishi Tochigi Hitachi, Ltd. Tochigi Factory, 800 Tomita, Ohira-machi, Shimoga-gun, Prefecture

Claims (1)

[Claims] Compressor (1), condenser (2), pressure reducer (6), evaporator (
4) In a refrigeration cycle having a reverse +h valve (5),
The main body (8) is provided with an inflow pipe (10), an outflow pipe (11), a bypass pipe (12), and a differential pressure lead-in pipe (9).
) is the condenser (2) outlet, and the outflow pipe (11) is the pressure reducer (
6), the bypass pipe (12) is connected between the compressor (1) and the reverse valve (5), and the lead-in pipe (8) is connected between the compressor (1) and the condenser (2). There is a mounting base (1) inside the main body (8).
7), and stop parts (15) and (16) are provided on the do, and the l5 parts of the retracting part (9) are fitted with a hero's (
13), (14) A refrigeration cycle having a differential pressure type three-way valve.