JPS5924161A - Freezing-refrigerator - 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 refrigerator and refrigerator which use all non-azeotropic mixed refrigerants.

Conventionally, in this divine cold body, cold storage, as shown in No. 11, a non-azeotropic mixed refrigerant (for example, R1]4+R22) is used.

Under constant pressure, evaporation (71, condensation (8) occurs, but V
As shown in Section (9), steaming light blooming does not occur at a constant water content.

In the evaporation process (71), the refrigerant is a low-boiling point refrigerant.The high-boiling point refrigerant that contains a large amount of R-22 components evaporates, so the evaporation temperature is low, and R114 gradually becomes a high-boiling point refrigerant.
The 2 evaporation vortex rises because the refrigerant that holds a lot of it evaporates. In the condensation process +81, the action is opposite to the evaporation process, and the high boiling point component R114 condenses first and the low boiling point component R-22 condenses steadily, so the condensed water temperature gradually decreases. It turns out.

By effectively utilizing this evaporation property, cold beds, storage rooms,
In other words, by using the low temperature area for the freezer and the high temperature area for the refrigerator, the freezer can have an evaporation temperature that is suitable for the temperature of the freezer, and the cold room can have an evaporation temperature that is suitable for the temperature of the refrigerator. By using an evaporator at a temperature of 6 liters, the effect can be completely improved. power.・R, which is a low boiling point component with condensation characteristics written in frlJ
The condensation of -22 is slower than that of R114, which is a high boiling point component.As shown in Figure 2, the most efficient circulating refrigerant mixture ratio is R22 and R114. In the case of a mixture of R22: R114=
55: 45 is the most capable and powerful.

When the mixing ratio is set to a good cap, the movement of component R22 that provides a low boiling point, that is, ability, is shown in α0).
5 minutes and 50 cents.

At 20 minutes, the rate was 53%, which means that it takes time to reach steady state. That is, when the refrigerator is in ON-OFF operation.

This is because it takes time to reach the most efficient circulating mixing ratio.

Due to the delay in lowering the evaporation temperature and the lack of capacity, it had the drawback of increasing the operating rate and reducing energy consumption.

The present invention is aimed at gradually overcoming these drawbacks, and will be explained in detail below with reference to FIG.

fi+ is a compressor, (21 is a condenser, (31 is a rising throttle device (capillary tube) that is a throttle rate), and i41 is a steady throttle device.

(51 is activated by a signal, temperature or pressure, etc.) A valve that opens when L rises and passes the refrigerant through the rising throttle device (31 fully traces, closes during normal operation and passes the refrigerant through the steady state throttle device (41), +61F
It is an evaporator.

It goes without saying that a non-azeotropic mixed refrigerant having a large boiling point difference is sealed in the Qσ%+('i warehouse having a refrigeration cycle having such a configuration.

With the above configuration, at startup, the valve (5+) is opened by the signal and the refrigerant is throttled at the throttle rate for the start-up (
31, it prevents a drop in low pressure due to a shortage of refrigerant on the low pressure side caused by the suction caused by the startup of the compressor (1), and also reduces the sudden rise in surface pressure at the time of start-up. Instead of increasing the condensation m' of 22, the component percentage is increased and the amount of refrigerant circulated 3M during startup and startup is increased to lower the evaporation temperature and increase the capacity.

As the condensation process progresses during start-up, the condensation progresses and the evaporation temperature in the evaporator decreases, making it possible to change the capacity. When the operation approaches stability, the valve (51) is closed and the mixed refrigerant enters the steady coarse throttling mode. It flows through the device (3) and enters steady operation.

As described above, according to the present invention, by increasing the content of the refrigerant components and the amount of circulation during startup and startup.

In addition, since it is possible to increase the capacity and reach the component of steady operation quickly, it is possible to reduce the energy consumption due to the start-up at 0N-OFF, and to increase the cooling capacity.
This makes it possible to increase the cooling speed, which is highly effective.

[Brief explanation of drawings]

FIG. 1 is a Mollier diagram of the non-azeotropic refrigerant mixture of the present invention. FIG. 2 is a weight characteristic diagram of a non-azeotropic mixed refrigerant during startup, rise and steady operation, and FIG. 3 is a refrigerant circuit diagram according to the present invention. In the figures, the same number indicates all the same or corresponding parts. (1) is a compressor, (2 (is a condenser, (31 is a board for rising), (4) is a steady-state throttle, (51 is a valve, (6j is an evaporator, and f/1 is a molinyl line drawing. In the above evaporation stroke, (81 is the condensation stroke, (9) is the iso-knit line, and the old one is the circulation characteristic of the low boiling point component (R-22) of the non-azeotropic mixed refrigerant at the time of startup. Agent Shin Kuzuno - y (F,)(
(Intermediate)

Claims (1)

[Claims] Refrigeration, cold Mj with a refrigeration cycle consisting of a compressor, condenser, cooling device, evaporator, piping connecting these, etc.
(A non-azeotropic mixed refrigerant consisting of a low boiling point component and a high boiling point component with a large boiling point difference (approximately 40°C to 50°C)?
In addition to using the imager, it is important to have an imager with a large aperture for rising and a large amount of diaphragm for constant printing. i6ho, (v厭1111゜