JPS58158472A - Cooling device - 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 device that supplies air cooled by a main cooler to a storage room using a blower to cool the room to a desired humidity, and an auxiliary cooler is provided in the storage room. A rapid freezing space is formed by direct cooling by the auxiliary cooler and indirect cooling from the main cooler, and when it is necessary to freeze the water or food in the ice tray in an unobstructed manner, it is necessary to freeze them on the auxiliary cooler. At the same time, the temperature of the NI medium in the main container is lowered to 4 in the main container.
1 Lower the black temperature to allow the arrival box to grow only in the main cooler, and when defrosting the main cooler, transfer the refrigerant to the auxiliary cooler.
The purpose is to evaporate and cool the inside of the storage room during defrosting of the main cooler.

An embodiment will be described below with reference to the drawings. ([) is a so-called two-temperature type PtI storage system.The inside of it is a refrigerator compartment (3) which is kept at freezing temperature by a partition wall (2) and a refrigerator compartment (4) which is kept at a temperature higher than the freezing point. ) Toni-ku Ii! ii shadowed °C
There is.

(5) is the bottom wall of the partition M (2+ and the freezer compartment 13 provided above), and there is a main compartment in the cooling chamber (6) formed between the partition wall (2) and the partition wall (2). '6m vessel (7) is installed. (8) transfers the air cooled by the main cooler (7) to the freezer compartment (3).
) and the refrigerator compartment (4) and 1: A circulating electric blower is used to supply the freezer compartment (3) with a blower (input air is discharged from the 10,000 in 81), and a duct (9) is connected to the refrigerator compartment (4). The cold air that has descended through the pipe is sent out and circulated as shown by the arrow.The duct is a damper device that opens and closes the cold air outlet portion of the duct 19) to the H room (4) according to the temperature of the PvI storage room 41. aυ is an electric compressor, and a3 is a condenser.

03#i For example, a so-called roll-bond type cooler in which a cold air passage is formed between two metal plates is constructed with an Ivl steel chave-on-sheet type cooler in which a refrigerant pipe is arranged in a heat conductive manner on the metal plate. ml with an auxiliary cooler! In the recommended example, the article is placed in a position where it receives good cold air in front of the blower (8) in the freezer compartment (3).
There is no problem in forming a compartment by maintaining a cold air circulation relationship with the freezer compartment (3) in the enclosure (Nawate 1).

Next, Figure 2 shows an example of a refrigerant circuit.
The refrigerant flowing out passes through the condenser 03 and is depressurized in the first cavity tI4. The refrigerant that exited this first cavity I flows into the auxiliary cooler a (and evaporates,
Here, the refrigerant that has not yet evaporated [1] is depressurized again in the 142 cavity chamber and the main cooler (7) C.
After being inhaled and smoked, the refrigerant is stored as a refrigerant liquid reservoir, and then passed through an Akiemulator Oe at °C and then to a compressed alOυ. On is a bypass pipe that bypasses the refrigerant discharged from the auxiliary cooler Oj to the outlet of the main cooler (7).

QII is an electromagnetic two-way valve as a flow path control device connected to the bypass fOn, which closes the non-energized sew flow path and opens the flow path when energized. Further, %a9 is an electric heater disposed in the main cooler (7) in a thermally conductive manner.

Next, FIG. 3 shows an example of an electric circuit.

(8M) is the drive motor of the transparent IIL machine (8), ■ is the amount that controls the operation of the refrigeration system - Mostat, and the freezing chamber (
31 degrees, the electric compressor an's motor (11M) is controlled in response to the humidity of the cold air discharged to the freezer compartment (3) and the humidity of the main cooler (7). . rzu is a defrost timer guard and has a switch (21A). Here, in the present invention, since the ±S Akebono starter (11M) is forced to operate even during defrosting of the main cooler (7), the defrost timer Zll is set to
The operating time of the LLs generator (8M) is accumulated, and when a predetermined accumulation is reached, the switch (21A) is closed. As a result, electric heater I, 9 relay coil ■, and two-way valve Oa are energized, electric heater 09 generates heat, heats the main cooler (7), and mist removal is started, and the relay switch (22A) of relay coil ■ is turned on. The contact switches from 1ml to (-), the defrost timer and blower motor (8M) are de-energized, the normally open contact (22B) closes, and the circuit after the compressor (11M) is turned off. It becomes energized regardless of the stat ■.Also, the relay coil is self-holding and the electric heater a
9 and two-way valve Oa are maintained. The two-way valve 08 is energized and opens, whereby the refrigerant leaving the auxiliary cooler 0 is transferred to the second
Due to the flow path resistance of the cabinet water pipe 09, the refrigerant initially flows into the bypass pipe 0η and does not flow into the main cooler (7). Ca is a self-resetting type one-degree detector that opens when it senses the humidity at the end of defrosting of the main cooler (7).

I: Control of chisostat■ in the configuration described below! IIE
In normal cooling operation, the two-way valve θ is not energized, so the two-way valve is closed. Kiyabira! The refrigerant pressure in the auxiliary cooler 01 is reduced, and some of the refrigerant evaporates there. .5 degrees, and the evaporation temperature is approximately -25'CN degrees.Now, the refrigerant that has not been completely smoked in the auxiliary cooler 03 is further depressurized in the second cavity cooler 09, and the main ?l?! (7), where it is smoked. At this time, the pressure at the main cooler (7) gate is approximately -α5. It is known that the evaporation temperature of the refrigerant becomes lower as the pressure decreases. However, in the case of the present invention, the evaporation humidity of the main cooler (71P! , since the temperature of the main cooler (7) is lower than the temperature of the auxiliary cold stripper aj,
) only grows. When you want to quickly freeze frozen food IP11 Hyoen water with this attack.

Subsidize them? If installed on Im unit 09, direct cooling from auxiliary cooler a9 and further cooling from main cooler (7) can be achieved.
: Rapidly frozen by cold air.

Next, the driving condition deafness of t [reducing device (7)] will be explained.

Defrost timer 1MWc! When the integration of D is completed, switch (
21A) is closed and relay coil c2. The two-way valve Os and the electric heater are energized, defrosting of the main cooler (7) is started, and the compressor aυ is forcedly operated, and the two-way valve Os is completely opened. Therefore, the 11@ medium flows to the bypass pipe 0η, and the temperature of the auxiliary cooler (Is decreases to about -40°C, that is, the auxiliary cooler 09 cools the freezer compartment a).
The yen will be changed. Since the Konosaki delivery machine (8) is stopped, the heat of the defrosting electric heater (19) of the main cooler (7) will not be forcedly circulated to both chambers 131.+41, and then defrosting will proceed. When the temperature of the main cooler (7) rises to the externally determined defrosting end humidity, temperature sensor 0 opens and switches switch (2).
2A) returns to the LAL contact and defrosting is completed.

The normally open contact (22B) opens and the circuit after the compressor motor (11M) returns to the normal chilled grape operation controlled by the thermostat (2).

During the above-mentioned defrosting operation, frost also adheres to the auxiliary cooler 0, but this frosting is sublimated and defrosted by the cooler air circulated by the blower (8) during the subsequent cooling operation.

Fig. 4 explains the opening and closing states of the direction valve I in each of the above-mentioned operating states, and Fig. 5 is a recommended example using a three-way solenoid valve (II) as the flow path control device. 2. Connected to the bypass pipe On in a branched manner to the 2-cab 1-bu 051. Also, the three-way solenoid valve (In is a known pure fluid element, and there is no problem with °C).

The present invention is constructed as described above, and uses a blower to supply cold air from the main cooler installed in the cooling chamber into the storage chamber, and an auxiliary PIIIJ device is installed in the storage chamber, so that the articles can be auxiliary M
If you place it on the retrograde device, is it the main IIl? Rapid freezing using cold air from the I-cooler and cooling from the auxiliary cooler.

Rapid freezing is coupled with Xiaomi. Also, since the temperature of the ``j:PfI cooler'' is lower than that of the auxiliary to overpass coolers, frost mainly grows only on the ``I@'' cooler, and defrosting only needs to be done in the main cooler. During defrosting, the refrigerant flows to the auxiliary cooler, so when defrosting the main P# aphrodisiac, especially in the storage i**, the auxiliary cooler is used °cpv.
Since the stored items are discarded, deterioration in quality of stored items can be prevented.

[Brief explanation of drawings]

Each figure shows one embodiment of the present invention.
A schematic side sectional view of the II storage, FIG. 2 is a refrigerant circuit diagram of the present invention,
! ! ! ! ! il is the same electrical schematic diagram, and Figure 4 is the two-way valve (3
)...Freezer compartment, 161-...Cold 1 set (7)...
・Main cooler. +81-...Blower, 113...Auxiliary cooler, a
n-...Bypass pipe, or...Two-way valve, a-...Electric heater. Figure 2-144 @ Figure 6

Claims (1)

[Claims] The air cooled by the main cooler installed in the cold room is circulated into the storage room using a blower, and an auxiliary cooler is installed in the storage room to keep the refrigerant evaporation temperature in the main cooler. Connect it so that the evaporation temperature of the refrigerant in the auxiliary cooler is lower than that! ! i] Kishu Pl? During defrosting of the I-type equipment, the refrigerant is passed only to the auxiliary cooler of both the shear coolers, and the auxiliary 1
It is characterized by being configured to evaporate in a 91m vessel. lh@device.