KR20210030058A - refrigeration system of cooling and purifing of direct type - Google Patents

Abstract

The present invention relates to a cooling system for a water cooling and purifying device of a direct-type, which is to improve cooling efficiency, comprising: a cooling coil in which a refrigerant moved from an expansion valve is circulated; a first capillary tube connected to communicate with the expansion valve; a second capillary tube connected to communicate with the expansion valve; a T-type connector formed in a downstream conduit of a dryer; and an on/off-type valve formed to be opened and closed.

Description

Refrigeration system of cooling and purifing of direct type}

The present specification relates to a cooler, and more specifically, to a cooling system for a direct water type coolant for improving cooling efficiency by uniformly forming ice in a cold water tank in which cold purified water is stored.

Unless otherwise indicated herein, the content described in this section is not prior art to the claims of this application, and inclusion in this section is not admitted to be prior art.

Although not shown in the drawing, the cooling system for a direct water type cold water purifier according to the prior art

It is connected to the capillary tube of the refrigeration cycle (compressor, condenser, expansion valve (or capillary tube) and evaporator) on the outer surface of the cold water tank where cold water is stored. The cooling coil (evaporation coil) is wound in a spiral shape sequentially from the top to the bottom of the cold water tank (formed of a metal material) so as to be in contact.

As a result, ice is formed from the top of the cold water tank, which is the inlet side of the cooling coil through which the refrigerant flowing through the capillary tube is circulated. As is high, rapid cooling and ice formation are not uniform.

The purified water stored in the above-described cold water tank is obtained through the lower inlet of the cold water tank and discharged through the upper outlet of the cold water tank.When cold water is discharged through the upper outlet of the cold water tank, the purified water has a relatively high temperature. It is introduced through the lower inlet of the cold water tank. That is, the ice located at the lower part of the cold water tank melts first compared to the ice located at the upper part of the cold water tank.

At this time, a temperature sensor is installed at the top of the cold water tank (referring to the inlet of the cooling coil through which the refrigerant flows through the capillary outlet) in order to prevent the purified water from being overcooled inside the cold water tank.

As the above-described temperature sensor is installed at the top of the cold water tank, the temperature sensor is turned on (the water inside the cold water tank is set) even when the thin ice located at the bottom of the cold water tank melts due to frequent cold water discharge from the cold water tank. If the temperature is exceeded, it means the set temperature for recirculating the refrigerant to form ice), or even when the on point is detected, the upper part of the cold water tank cools faster than the lower part of the cold water tank. The lower portion of the tank has a problem in that ice is continuously insufficient, or only thin ice is maintained.

The cold water tank of the water purifier is posted in Publication No. 1999-0016979 of the Republic of Korea Public Utility Model Publication.

An embodiment of the present specification relates to a cooling system for a direct water type cold water purifier, which enables the formation of hard ice up to thin ice formed under the cold water tank during initial cooling of a cold water tank in which cold water is stored.

An embodiment of the present specification relates to a cooling system for a direct water type cold water purifier that enables local cooling of a lower portion of a cold water tank from which purified water is obtained when cold water is discharged through an upper outlet of the cold water tank.

According to an embodiment of the present specification in order to achieve the above and other objects of the present specification,

In the cooling system for a direct water cooler comprising a compressor, a condenser, a dryer, an expansion valve and an evaporator refrigeration cycle:

A cooling coil wound in a spiral shape from top to bottom and in contact with an outer surface of the cold water tank having an inlet port formed at a lower portion and an outlet port formed at an upper portion thereof, and circulating the refrigerant moved from the expansion valve;

A second supply for supplying the refrigerant supplied from the expansion valve from the top to the bottom of the cooling coil through a first outlet connected to be in communication with the expansion valve and connected to the cooling coil formed in the upper portion of the cold water tank. 1 capillary tube;

For supplying the refrigerant supplied from the expansion valve from the middle to the bottom of the cooling coil through a second outlet connected to communicate with the expansion valve and connected to the cooling coil formed in the middle of the cold water tank. Second capillary;

A T-type connector formed in a pipeline downstream of the dryer and configured to supply a refrigerant passing through the dryer to the first or second capillary tube;

An on/off type valve formed to be openable and closed in a conduit between the T-type connector and the second outlet, wherein the refrigerant passing through the dryer passes through the T-type connector and is supplied to the first outlet. When the on/off type valve is switched to a closed state, and the refrigerant passing through the dryer passes through the T-type connector and the on/off type valve and is supplied to the second outlet, the on/off type valve is in an open state. It provides a cooling system for a direct water type cold water purifier characterized in that it is converted to.

The cooling system for a direct water type cold water purifier according to an embodiment of the present specification having the above-described configuration has the following advantages.

During the initial cooling of the cold water tank, it is possible to reduce power consumption by preventing the overload of the cooling system by forming hard ice up to the thin ice formed under the cold water tank to improve cooling efficiency.

In addition, when cold water is discharged through the upper outlet of the cold water tank, the lower portion of the cold water tank from which purified water is obtained is locally cooled, so that the cold water temperature of the cold water tank can be continuously maintained even when the cold water is frequently discharged.

1 is a schematic block diagram of a cooling system for a direct water type cold water purifier according to a preferred embodiment of the present specification;
FIG. 2 is a view of a capillary tube for supplying a refrigerant to a cooling coil wound on an outer surface of a cold water tank in the cooling system for a direct water type cold water purifier shown in FIG. 1;
3 (a, b) is a cooling system for a direct water type cold water purifier shown in FIG. 1, after cooling the purified water inside the cold water tank, it is formed on a spiral guide plate inside the cold water tank according to the conventional and embodiments of the present specification A picture as a substitute for drawing showing ice (cold water tank not shown),
4(a,b) is a cooling system for a direct water type cold water purifier shown in FIG. This is a picture instead of drawing showing ice (cold water tank not shown).

Hereinafter, a cooling system for a direct water type cold water purifier according to a preferred embodiment of the present specification will be described in detail with reference to the accompanying drawings.

1 to 4 (a, b), a cooling system for a direct water type cold water purifier according to an embodiment of the present specification is

In the cooling system for a direct water cooler comprising a compressor, a condenser, a dryer, an expansion valve and an evaporator refrigeration cycle:

It is wound in a spiral shape from the top to the bottom on the outer surface of the cold water tank 1 in which the inlet 10 is formed at the bottom and the outlet 11 is formed at the top, and is moved from the expansion valve 24 to be circulated. A cooling coil 13 (evaporation coil) wound so as to be in contact with the outer surface of the cold water tank 12 in a spiral shape from top to bottom to cool the fluid by mutual heat exchange between the refrigerant and the fluid in the cold water tank 12. It acts as an evaporator of the refrigeration cycle);

A compressor (21) (compressor) connected to communicate with the outlet side of the cooling coil (13) and compressing the returned refrigerant;

A condenser 22 for condensing the refrigerant moved from the compressor 21;

A dryer 25 for drying the liquid refrigerant moving from the condenser 22;

An expansion valve 24 for expanding the liquid refrigerant moved from the dryer 25;

The refrigerant moving from the expansion valve 24 is cooled through the first outlet 14 connected to be connected to the expansion valve 24 and connected to the cooling coil 13 formed on the upper portion of the cold water tank 12. A first capillary tube 15 for supplying from the top to the bottom of the coil 13;

The refrigerant transferred from the expansion valve 24 through the second outlet 16 connected to be connected to the expansion valve 24 and connected to the cooling coil 13 formed in the middle of the cold water tank 12 A second capillary tube 17 for supplying from the middle to the bottom of the cooling coil 13;

A T-shaped connector 26 formed in the downstream pipe line of the dryer 25 and for supplying the refrigerant passing through the dryer 25 to the first capillary tube 15 or the second capillary tube 17;

An on/off type valve 27 (as an example, a solenoid valve may be used) formed to be opened and closed in the pipeline between the T-type connector 26 and the second outlet 16; but, a dryer 25 ) When the refrigerant passing through the T-type connector 26 is supplied to the first outlet 14, the on/off type valve 27 is switched to a closed state, and the refrigerant passing through the dryer 25 is T When supplied to the second outlet 16 through the type connector 26 and the on/off type valve 27, the on/off type valve 27 is characterized in that it is switched to an open state.

According to a more preferred embodiment, the above-described cold water tank 12

It is disposed on the top of the cold water tank 12 and detects in real time a set temperature of purified water around the connection part connecting the cooling coil 13 and the first outlet 14 of the first capillary tube 15, but the detection signal is controlled by the control unit ( A first temperature sensor 18 for transmitting to (not shown);

It is disposed in the middle of the cold water tank 12 and detects in real time the set temperature of purified water around the connection part connecting the cooling coil 13 and the second outlet 16 of the second capillary tube 17, and controls the detection signal. It characterized in that it further comprises a; second temperature sensor 19 for transmission to (not shown).

The above-described cold water tank 12

A spiral guide plate (23) formed inside the cold water tank (12) and for guiding the fluid (referring to purified water or bottled water) flowing into the cold water tank (12) through the inlet (10) to move toward the outlet (11) It characterized in that it further comprises a; fluid guide member 20 made of.

A closed circuit including the above-described compressor 21, condenser 22, dryer 25, expansion valve 24 (or a capillary tube), and cooling coil 13 (to serve as an evaporator). A configuration for circulating the refrigerant generated by the refrigeration cycle constituting the refrigeration cycle along the cooling coil 13, and

The configuration of cooling the fluid by repeated mutual heat exchange between the refrigerant circulating along the cooling coil 13 wound on the outer surface of the cold water tank 12 and the fluid (referring to purified water or mineral water) of the cold water tank 12,

Since the technical content can be easily implemented by those of ordinary skill in the technical field to which the present specification belongs, detailed descriptions of their configuration will be omitted.

Hereinafter, an example of use of a cooling system for a direct water type cold water purifier according to an embodiment of the present specification will be described with reference to the accompanying drawings.

As shown in FIGS. 1 to 4 (a, b), raw water such as tap water is purified by filtering foreign substances such as rust, heavy metals, and dust, which are harmful to the human body, contained in the raw water by a water filter (not shown).

The purified purified water is introduced into the cold water tank 12 through the inlet 10 formed in the lower portion of the cold water tank 12 by raw water pressure or a pump (not shown).

The purified water flowing into the cold water tank 12 forms a spiral trajectory along the spiral guide plate 23 of the fluid guide member 20 installed inside the cold water tank 12, and the outlet 11 formed at the top of the cold water tank 12 Is moved to the side.

At this time, as the refrigeration cycle shown in FIGS. 1 and 2 is operated, the high-temperature, high-pressure gaseous refrigerant compressed by the compressor 21 sequentially turns the condenser 22, the dryer 25, and the expansion valve 24. Passed through and supplied to the cooling coil 13 spirally wound on the outer surface of the cold water tank 12.

That is, the refrigerant passing through the dryer 25 passes through the T-type connector 26, and the first outlet 14 that communicates the cooling coil 13 wound on the top of the cold water tank 12 and the first capillary tube 15. ) And is moved to the cooling coil 13 (at this time, the on/off type valve 27 is kept in a closed state).

Accordingly, the refrigerant supplied from the above-described expansion valve 24 to the cooling coil 13 wound on the outer surface of the cold water tank 12 is from the cooling coil 13 located above the cold water tank 12. ) Is sequentially moved to the cooling coil 13 located below it.

Accordingly, among the cooling coils 13 wound on the outer surface of the cold water tank 12, the low-temperature refrigerant supplied from the upper cooling coil to the lower cooling coil and the upper purified water stored in the cold water tank 12 to the lower purified water are mutually exchanged. Cooling proceeds by

The refrigerant in the cooling coil 13, which has been heat-exchanged with the purified water in the cold water tank 12 described above, repeats the refrigerant circulation process of the refrigeration cycle returned to the compressor 21.

When the above-described on/off type valve 27 is switched to an open state, the refrigerant that has passed through the dryer 25 passes through the T-type connector 26 and the on/off type valve 27, and the cold water tank 12 It is moved to the cooling coil 13 through the second outlet 16 that communicates the cooling coil 13 wound on the middle side of the second capillary tube 17 (at this time, the cooling wound on the cold water tank 12). The refrigerant is not supplied to the first outlet 14 through which the coil 13 and the first capillary tube 15 are communicated.). For this reason, local cooling (cooling is performed only on the lower side of the cold water tank 12) from the middle water to the lower purified water of the cold water tank 12 is performed.

As described above, the purified water inside the cold water tank 12 is cooled to a predetermined temperature by mutual heat exchange with the refrigerant of the cooling coil 13 outside the cold water tank 12, and the cooling action continues in the cold water tank 12. As it is repeated, some of the purified water inside the cold water tank 12 is frozen.

The refrigerant from the expansion valve 24 is transferred to the cooling coil 13 formed in the middle of the above-described cold water tank 12 through the second capillary tube 17 communicated through the second outlet 16. ), and maintain the temperature and pressure of purified water flowing into the cold water tank 12 through the inlet 10 at 25°C, 2.4kgf/㎠, and the cold water tank 12 within 1 minute after completion of one cooling The cold water is discharged through the outlet 11, but the temperature of the cold water to be discharged when one cup is discharged at intervals of 1 minute (compare the temperature of cold water from 1 cup to 10 cups) is indicated in the [Table] below.

[unit; ℃] division
Cooling to the top (conventional technology cooling method) After upper cooling, lower 10 minutes cooling method (cooling method in this specification) Test,number Example 1 Example 2 Average (AVG)
14.0
6.3

5.2
6.1
7.6
8.9
10.2
11.2
12.0
12.7
9.4 Example 1 Example 2 Average (AVG) 1 cup 13.9 14.0 12.0 11.2 11.6 2 cups 6.3 6.3 5.7 5.5 5.6 3 cups 5.1 5.3 4.9 4.9 4.9 4 cups 6.1 6.1 6.5 6.3 6.4 5 cups 7.6 7.5 7.3 7.1 7.2 6 cups 8.8 9.0 7.5 7.4 7.5 7 cups 10.2 10.1 7.6 7.4 7.5 8 cups 11.2 11.1 7.8 7.7 7.8 9 cups 12.0 11.9 8.2 8.1 8.2 10 cups 12.7 12.6 8.7 8.9 8.8 Average (AVG) 9.4 9.4 7.6 7.5 7.5 10℃ or less 5 cups 9 cups

When cooling the purified water in the cold water tank 12 by supplying a refrigerant to the cooling coil 13 located above the cold water tank 12, the temperature of the cold water discharged through the outlet 11 of the cold water tank 122 It was confirmed that the average temperature of 10 cups of Ga is 9.4°C (here, 5 cups when the temperature of cold water is less than 10°C) (referring to the cooling method of the conventional technology).

On the other hand, after cooling the upper purified water of the cold water tank 12 by the refrigerant supplied through the first capillary tube 15 in which the first outlet 14 is located above the cold water tank 12, By detecting the purified water temperature in real time by the first temperature sensor 18, the upper portion of the cold water tank 12 can be prevented from being overcooled), and the second outlet 16 is located in the middle of the cold water tank 12. 2When the lower purified water of the cold water tank 12 is cooled for 10 minutes by the refrigerant supplied through the capillary tube 17 (at this time, the second temperature sensor 19 detects the purified water temperature in real time and the cold water tank 12 ), when the temperature of cold water discharged through the outlet 11 of the cold water tank 122 is 7.5℃ (at this time, the temperature of the cold water is 10℃ or less) 9 remaining) was confirmed (referring to the cooling method according to the embodiment of the present specification).

When cooling the purified water in the cold water tank 12 by supplying the refrigerant through the first capillary tube 15 to the top of the cooling coil 13 wound on the cold water tank 12 as described above (referring to the conventional cooling method ), the average temperature of 10 cups of cold water is maintained at 9.4°C, and out of 10 cups of cold water, there are 5 cups of cold water below 10°C.

The refrigerant is supplied to the cooling coil 13 located above the cold water tank 12 through the first capillary tube 15, and the second capillary tube 17 is placed in the cooling coil 13 located in the middle of the cold water tank 12. When cooling the purified water in the cold water tank 12 by supplying a refrigerant through (referring to the cooling method according to the embodiment of the present specification), the average temperature of 10 cups of cold water is 7.5°C, which is relatively low (1.9°C is low) And it was confirmed that there were 9 cups of cold water of 10° C. or less among 10 cups of cold water.

3A, 3B, and 4A, 4B, the spiral guide plate 23 of the fluid guide member 20 formed in the cold water tank 12 described above extends from the top 1 row to the bottom 16 rows. It shows that it was formed.

FIG. 3A is a photographic diagram showing ice adhering to the spiral guide plate 23 of the cold water tank 12 after cooling the above-described cold water tank 12, from the upper third row of the spiral guide plate 23 It can be seen that a large amount of ice was formed up to the 7th row, and a small amount of ice was formed from the lower row 8th to the 14th row (conventional cooling method).

FIG. 3B is a photographic representation of ice adhering to the spiral guide plate 23 of the cold water tank 12 after cooling the above-described cold water tank 12, from the upper third row of the spiral guide plate 23 It can be seen that a large amount of ice is formed up to row 7, a small amount of ice is formed in rows 8 to 10 in the middle, and a large amount of ice is formed in rows 11 to 16 in the lower part (cooling method of this specification).

FIG. 4A is a photographic diagram showing ice sticking to the spiral guide plate 23 of the cold water tank 12 after 10 cups of cold water are discharged from the outlet 11 of the cold water tank 12 described above, and a spiral guide plate It can be seen that a small amount of ice was formed from intermediate rows 4 to 6 in (23) (conventional cooling method).

FIG. 4B is a photographic diagram showing ice sticking to the spiral guide plate 23 of the cold water tank 12 after 10 cups of cold water are discharged from the outlet 11 of the cold water tank 12 described above, and a spiral guide plate It can be seen that a small amount of ice was formed in the upper 3 rows, the middle rows 8 and 9 of (23), and a large amount of ice was formed in the middle rows 4 to 7 (cooling method of the present specification).

Although not shown in the drawings, a three-way valve is installed without installing a T-type connector 26 and an on/off type valve 27 in the downstream pipe line of the dryer 25 to electronically control the flow of refrigerant. Of course, it can be precisely controlled.

Here, although the above description has been described with reference to a preferred embodiment in the present specification, those skilled in the art will variously modify and modify the present specification within the scope not departing from the spirit and scope of the present specification described in the following claims. You will understand that you can change it.

10; Inlet
11; outlet
12; Cold water tank
13; Cooling coil
14; Exit 1
15; 1st capillary
16; Exit 2
17; 2nd capillary
18; 1st temperature sensor
19; 2nd temperature sensor
20; Fluid guide member
21; compressor
22; Condenser
23; Spiral guide plate
24; Expansion valve
25; Dryer
26; T-type connector
27; ON/OFF type valve

Claims (3)

In the cooling system for a direct water cooler comprising a compressor, a condenser, a dryer, an expansion valve and an evaporator refrigeration cycle:
A cooling coil wound in a spiral shape from top to bottom and in contact with an outer surface of the cold water tank having an inlet port formed at a lower portion and an outlet port formed at an upper portion thereof, and circulating the refrigerant moved from the expansion valve;
A second supply for supplying the refrigerant supplied from the expansion valve from the top to the bottom of the cooling coil through a first outlet connected to be in communication with the expansion valve and connected to the cooling coil formed in the upper portion of the cold water tank. 1 capillary tube;
For supplying the refrigerant supplied from the expansion valve from the middle to the bottom of the cooling coil through a second outlet connected to communicate with the expansion valve and connected to the cooling coil formed in the middle of the cold water tank. Second capillary;
A T-type connector formed in a pipeline downstream of the dryer and configured to supply a refrigerant passing through the dryer to the first or second capillary tube;
An on/off type valve formed to be openable and closed in a conduit between the T-type connector and the second outlet, wherein the refrigerant passing through the dryer passes through the T-type connector and is supplied to the first outlet. When the on/off type valve is switched to a closed state, and the refrigerant passing through the dryer passes through the T-type connector and the on/off type valve and is supplied to the second outlet, the on/off type valve is in an open state. A cooling system for a direct water type cold water purifier, characterized in that it is converted into. The method of claim 1,
The cold water tank is
A first temperature sensor disposed above the cold water tank and configured to detect, in real time, a set temperature of purified water around a connection part connecting the cooling coil and the first outlet of the first capillary tube;
And a second temperature sensor disposed in the middle of the cold water tank and configured to detect a set temperature of purified water in real time around a connection portion connecting the cooling coil and the second outlet of the second capillary tube. Cooling system for direct water cooler. The method of claim 1,
The cold water tank is
A fluid guide member formed inside the cold water tank and comprising a spiral guide plate for guiding the fluid flowing into the cold water tank through the inlet port toward the outlet port; Air cooling system.

Images