KR200275566Y1 - The Recirculate Water Chiller Added a Function of Dehumidifier - Google Patents

Abstract

The present invention relates to a chiller for attaching a dehumidifying evaporator 12 to a conventional circulation chiller (hereinafter chiller) to have a dehumidifying effect, and to suppress corrosion of equipment by moisture and to form a dehumidifier for a pleasant environment. The chiller has a structure that can reduce the additional cost incurred by the separate purchase of. An object of the present invention is to provide a configuration of a chiller and a method of operating the chiller and the dehumidifier, which can perform two operations of the chiller and the dehumidifier by using a common structure and the principle of operation of the chiller and dehumidifier.

The chiller for achieving the object of the present invention is a compressor (1) as shown in Figure 4 when the cooling fluid is cooled to supply the refrigerant to the heat exchange evaporator (8), when the cooling is not necessary dehumidification evaporator It is a chiller of the system which supplies a refrigerant | coolant to (12).

Description

The Recirculate Water Chiller Added a Function of Dehumidifier}

The present invention is attached to the dehumidifying evaporator 12 as shown in Figure 1 to the structure of the circulating chiller (hereinafter chiller) of the cooling fluid used for cooling the existing specific equipment can remove moisture in the laboratory The purpose is to develop a chiller that also has a dehumidifying effect.

Chiller is a device designed to cool the heat to prevent the damage caused by heat generated in the specific temperature-sensitive part of various specific equipment (XRD, XRF, MASS, printing press, etc.).

The cooling fluid used to cool the unit is usually water, but may also use cooling oil.

In order to supply the cooling fluid with constant temperature, the temperature of the cooling fluid to be supplied is set and the temperature of the cooling fluid measured by the temperature sensor is compared with the set temperature to correct the temperature of the cooling fluid when there is a change.

The existing chiller has an ON / OFF method and a discharge bypass method, but in this text, the configuration of the discharge bypass method is representatively shown in FIG. 2, and the present invention can be applied to both existing methods.

As shown in FIG. 2, the conventional discharge bypass chiller is discharged 1b of the compressor 1 is connected to the inlet 2a of the condenser 2 by a transfer pipe 31 and the pen motor 3 is a condenser. The discharge port 2b of the condenser 2 is connected to the inlet 4a of the receiver 4 and the transfer pipe 32, and the discharge port 4b of the receiver 4 is connected to the transfer pipe (2). 33) is connected to the inlet (5a) of the dryer (5), the outlet (5b) of the dryer (5) is connected to the inlet (6a) and the transfer pipe 34 of the solenoid valve (6) and the solenoid valve (6) The discharge port 6b is connected to the inlet 7a of the expansion valve 7 by the transfer pipe 35 and the discharge port 7b of the expansion valve 7 is connected to the evaporator 8 for heat exchange through the transfer pipe 36. It is connected to the inlet (8a) and the discharge port (8b) of the heat exchanger evaporator (8) is connected to the inlet (1a) of the compressor (1) and the transfer pipe 37, the inlet (9a) of the DBV (9) is a transfer pipe ( 38) to the feed pipe (31) and the DBV ( The discharge port 9b of 9) is configured to be connected to the transfer pipe 36 through the transfer pipe 39.

When the measured temperature of the cooling fluid is higher than the set temperature, the high-temperature, high-pressure gaseous refrigerant generated by the compressor 1 passes through the discharge pipe 1a of the compressor 1 along the transfer pipe 31. It flows into the condenser 2 via the inlet port 2b. The refrigerant cooled by the pen motor 3 in the condenser 2 and liquefied at low temperature and high pressure is passed through the inlet 4a of the receiver 4 through the discharge port 2b of the condenser 2 and the transfer pipe 32. The fine impurities stored in the receiver 4 are introduced into the dryer 5 through the inlet port 5a of the dryer 5 through the discharge pipe 4b through the discharge port 4b, and the fine impurities mixed in the refrigerant are filtered out. It is pushed into the solenoid valve 6 through the inlet 6a of the solenoid valve 6 via the discharge port 5b of 5, and the conveyance pipe 34. As shown in FIG. When the measured temperature is higher than the set temperature, the solenoid valve 6 is opened so that the refrigerant entering the inlet 6a is expanded through the inlet 7a of the expansion valve 7 through the feed pipe 35 through the outlet 6b. After flowing into the valve 7, it flows into the heat exchange evaporator 8 through the inlet 8a of the heat exchange evaporator 8 along the transfer pipe 36 via the discharge port 7b. In the heat exchange evaporator (8), the refrigerant absorbs the heat energy of the cooling fluid to lower the temperature of the cooling fluid and completely vaporizes, thereby changing to a gas of low pressure and low pressure. The vaporized refrigerant exits the discharge port 8b of the heat exchange evaporator 8 and returns to the compressor 1 through the inlet port 1a of the compressor 1 along the transfer pipe 37. This cycle is repeated until the temperature of the high cooling fluid is equal to the set temperature.

Temperature measurement of the cooling fluid is measured by a temperature sensor attached to the heat exchange evaporator (8) and the solenoid valve (6) is opened and closed by the electrical signal of the temperature controller. When the temperature measured by the temperature sensor is different from the set temperature in the temperature controller, a corresponding signal is sent from the temperature controller to the solenoid valve 6 to control the opening and closing of the solenoid valve 6.

The solenoid valve 6 is opened when the measured temperature of the cooling fluid is higher than the set temperature. The solenoid valve 6 flows the refrigerant introduced through the inlet 6a to the discharge port 6b, but when the measured temperature of the cooling fluid is lower than the set temperature. The valve 6 is closed so that the refrigerant coming in from the inlet 6a does not flow into the outlet 6b.

When the measured temperature of the cooling fluid is lower than the set temperature, as described above, the solenoid valve 6 is blocked, so that the refrigerant heated by the compressor 1 at high temperature and high pressure is transferred to the discharge pipe 1 through the discharge port 1a of the compressor 1. 31 through the transfer pipe 38, the inlet (9a) of the DBV (9) is introduced into the DBV (9).

The DBV 9 serves to open the pressure of the discharge port 9b so that the pressure is equal to the set pressure when the pressure applied to the discharge port 9b is lower than the pressure set in itself.

When the temperature of the cooling fluid is lower than the set temperature, the solenoid valve 6 is blocked, so that the refrigerant cannot flow into the transfer pipe 35, and of course, the refrigerant supplied to the transfer pipe 39 through the transfer pipe 36 is also blocked. As a result, the pressure at the discharge port 9b of the DBV 9 is lowered. On the other hand, the high temperature and high pressure refrigerant generated in the compressor 1 is supplied to the inlet 9b of the DBV 9 at a constant pressure along the feed pipe 38 regardless of whether the measured temperature of the cooling fluid is higher or lower than the set temperature. When the temperature of the cooling fluid is lower than the set temperature and the solenoid valve 6 is closed and the pressure applied to the discharge port 9b of the DBV 9 becomes low, the high temperature and high pressure refrigerant flowing into the inlet port 9a due to the characteristics of the DBV 9 is applied to the DBV. (9) flows to the feed pipe (39) through the discharge port (9b) by the set pressure. The high temperature refrigerant passing through the transfer pipe 39 passes through the transfer pipe 36 and enters the heat exchange evaporator 8 through the inlet 8b of the heat exchange evaporator 8 to raise the temperature of the cooling fluid lower than the set temperature. After being made, the discharge port 8b is introduced into the compressor 1 through the inlet 1a of the compressor 1 along the transfer pipe 37. This cycle is repeated until the temperature of the low cooling fluid is equal to the set temperature.

The existing chiller maintains the temperature of the cooling fluid by selecting and running the above two cycles as the temperature of the cooling fluid is higher and lower than the set temperature.

When the chiller of the ON / OFF method is omitted, the compressor is stopped when the temperature of the cooling fluid is lower than the set temperature, the supply of refrigerant to the heat exchange evaporator is stopped, and when the temperature rises, the compressor is operated again to perform cooling. However, this method shortens the life of the compressor due to the overload resulting from frequent restarts, and it takes some time to restart the compressor after turning it off. In addition, since a large amount of cooling fluid is required in order to reduce the aforementioned temperature deviation, a separate cooling fluid storage container is required, thereby increasing the volume of the chiller and increasing the cost.

Discharge Bypass chiller described above solves the problem of ON / OFF type because there is no stop of compressor. However, there is a problem that there is an inefficient aspect in terms of energy utilization to heat the cooled cooling fluid and then to cool again.

Dehumidifier is a device that removes moisture in the room to prevent damage caused by moisture of various equipment and create a pleasant indoor environment.

The structure of a dehumidifier is similar to the structure of a chiller, and there are many things in common. As shown in FIG. 3, the dehumidifier has a discharge port 61b of the compressor 61 connected to the inlet 62a of the condenser 62 by the transfer pipe 81, and the pen motor 63 is coupled to the condenser 62. The discharge port 62b of the 62 is connected to the inlet 64a of the receiver 64 and the transfer pipe 82, and the discharge port 64b of the receiver 64 is the dryer 65 through the transfer tube 83. Is connected to the inlet (65a) of the dryer 65, the discharge port (65b) of the dryer 65 is connected to the inlet (66a) of the solenoid valve 66 and the transfer pipe 84 and the discharge port (66b) of the solenoid valve 66 is the transfer pipe (85) is connected to the inlet (67a) of the expansion valve 67, the discharge port (67b) of the expansion valve 67 is connected to the inlet (68a) of the dehumidifying evaporator 68 through the transfer pipe 86 and dehumidified The discharge port 68b of the evaporator 68 has a structure connected to the inlet 61a of the compressor 61 and the transfer pipe 87.

The dehumidifier is driven as follows. The high-temperature, high-pressure gaseous refrigerant generated by the compressor 61 passes through the discharge pipe 61a of the compressor 61 through the inlet 62b of the condenser 62 to the condenser 62. Inflow. The refrigerant cooled by the pen motor 63 in the condenser 62 and cooled at a low temperature is passed through the inlet 64a of the receiver 64 through the discharge port 62b of the condenser 62 and the transfer pipe 82. After being stored in the machine 64 and passed through the discharge pipe (83) through the discharge pipe (64b) through the inlet (65a) of the dryer 65, the fine impurities mixed in the refrigerant is filtered out and then the dryer ( It is pushed into the solenoid valve 66 through the inlet port 66a of the solenoid valve 66 via the discharge port 65b of the 65 and the conveyance pipe 84. After the solenoid valve 66 is opened to enter the inlet port 66a, the refrigerant flows into the expansion valve 67 through the inlet port 67a of the expansion valve 67 through the transfer pipe 85 through the discharge port 66b. It is vaporized and flows into the dehumidifying evaporator 68 through the inlet 68a of the dehumidifying evaporator 68 along the transfer pipe 86 via the discharge port 67b. Since the dehumidifier evaporator 68 is in contact with the installed room, the refrigerant passing through the dehumidifier evaporator 68 absorbs thermal energy from the surroundings and completely vaporizes, thereby decreasing the ambient temperature below the dew point and changing moisture in the air into water. It turns into a gas of low pressure and low pressure. The moisture converted into water is discharged to the outside through the drain pipe. The vaporized refrigerant exits the discharge port 68b of the heat exchange evaporator 68 and returns to the compressor 61 through the inlet 61a of the compressor 61 along the transfer pipe 87. Repeat this cycle to remove moisture from the room.

Laboratories require chillers to prevent functional malfunction or damage to equipment and dehumidifiers to prevent damage from equipment corrosion due to moisture in the room, but the double burden of purchasing the two equipment separately Will have However, as described above, the chiller and the dehumidifier have a lot in common in its structure and operation principle, and thus the combination of the two devices may be possible.

The present invention solves all the problems of the ON / OFF method and the discharge bypass method as described above, and combines the common structure and operation principle of the chiller and the dehumidifier, which can play two roles of cooling and dehumidification with a single chiller. We want to construct a chiller.

1: Configuration diagram connecting chiller to which dehumidification function to be designed and cooling target equipment are connected

2: Configuration diagram of existing chiller

3: Configuration diagram of an existing dehumidifier

4: configuration diagram of a chiller to which the dehumidification function is added

5: A configuration diagram in which a safety device is added to the chiller to which the designed dehumidification function is added

※ Explanation of symbols for main parts of drawing

1: compressor 2: condenser

6: solenoid valve 7: expansion valve

8: Evaporator for heat exchange 10: DBV (Discharge Bypass Valve)

11 expansion valve 12 dehumidification evaporator

In order to achieve the object of the present invention, if the structure of the dehumidifier is bonded to the structure of the existing chiller and the temperature of the cooling fluid is higher than the set temperature, the refrigerant supplied by the compressor (1) is supplied to the heat exchange evaporator (8) to cool the cooling fluid. When the cooling fluid is cooled and the temperature of the cooling fluid is lower than the set temperature, the refrigerant supplied by the compressor 1 is supplied to the dehumidifying evaporator 12 to operate the function of the dehumidifier.

Hereinafter, described with reference to the accompanying drawings a preferred embodiment of the present invention as follows. Combining the structure of the dehumidifier with the structure of the existing chiller is the configuration of Figure 4 as the inlet (10a) of the DBV (10) is connected to the conveying pipe 34 through the conveying pipe 40 and the discharge port of the DBV (10) 10b) and the inlet 11a of the expansion valve 11 are connected to the transfer pipe 41, and the outlet 11b of the expansion valve 11 is the inlet 12a of the dehumidifying evaporator 12 by the transfer pipe 42. ) And the outlet 12b of the dehumidifying evaporator 12 is connected to the transfer pipe 37 through the transfer pipe 43, and the transfer pipe 37 is connected to the DBV 10 through the detection pipe 44. The device of the structure connected with (10c) is added.

In this configuration, when the temperature of the cooling fluid is higher than the set temperature, the cooling function of the chiller is operated to lower the temperature of the cooling fluid, and when the temperature of the cooling fluid is low, the dehumidifier is operated to remove moisture from the room.

The operation when the temperature of the cooling fluid is higher than the set temperature lowers the temperature of the cooling fluid by moving the refrigerant in the same order as the existing chiller as described above.

When the temperature of the cooling fluid is lower than the set temperature, the dehumidification function is operated.

Since the solenoid valve 6 is closed, the refrigerant exiting the discharge port 5b of the dryer 5 does not pass to the transfer pipe 35, but passes through the transfer pipe 34 and follows the transfer pipe 40. Through the inlet (10a) of the DBV (10) and the solenoid valve (6) after the transfer pipe (35) from the expansion valve (7), transfer pipe (36), heat exchange evaporator (8), transfer pipe (37) ), The supply pipe 43, the dehumidification evaporator 12, the delivery pipe 42, the expansion valve 11, and the line to the delivery pipe 41 are not supplied with the refrigerant and are set in the DBV 10. The difference occurs between the pressure and the pressure applied to the discharge port 10b, and the DBV 10 flows the liquefied refrigerant by the set pressure to the transfer pipe 41 through the discharge port 10b. The low temperature and high pressure liquefied refrigerant flowing into the transfer pipe 41 is passed through the expansion valve 11 through the inlet port 11a of the expansion valve 11 and exits the discharge port 11b while exiting the discharge pipe 11b. Through the inlet 12a of the dehumidification evaporator 12 through the dehumidification evaporator 12 is absorbed thermal energy from the surroundings and completely vaporized, while dropping the ambient temperature below the dew point to change the moisture in the air into water It turns into a gas of low pressure. The moisture converted into water is discharged to the outside through the drain pipe or collected in a separate container. The refrigerant changed into a gas of low pressure passes through the discharge port 12b of the dehumidifying evaporator 12b, passes through the transfer pipe 43, and passes through the transfer pipe 37 to the compressor 1 through the inlet 1a of the compressor 1. Stopped by). The sensing tube 44 senses the pressure of the refrigerant flowing through the transfer pipe 37 and transfers the refrigerant having a predetermined pressure as compared with the pressure set in the DBV 10 through the discharge port 10b of the DBV 10. To the tube (41). This cycle removes moisture from the room repeatedly until the temperature of the low cooling fluid is equal to the set temperature.

The DBV 10 shown in FIGS. 4 and 5 has a sensing tube 44, which is the same as the DBV 9 of FIG. 2 and the DBV 14 shown in FIG. 5. You can use DBV. In addition, the solenoid valve may be replaced by the DBV (10).

In this design, since the actual position of the dehumidification evaporator 12 is installed near the pen motor 3 to increase the dehumidification effect, simplify the structure, and reduce the size of the chiller, a separate pen motor is not required, but for better performance, Can be attached to the evaporator 12 for dehumidification.

When the temperature of the cooling fluid is lower than the set temperature, the refrigerant is supplied to the dehumidification evaporator 12, so the temperature of the cooling fluid in the heat exchange evaporator 8 does not drop any more, but after cooling the target equipment, the temperature rises and returns. The cooling fluid comes to naturally increase the temperature. However, the cooling fluid of the heat exchanger evaporator 8 may be damaged due to a drastic drop in indoor temperature, operation of the target equipment, failure of the solenoid valve 6, or the like. If the temperature continues to drop, serious problems will occur for the chiller and the equipment to be cooled. The chiller according to the present invention sets the lower limit temperature, and when the temperature of the cooling fluid continues to go down the lower limit temperature, the chiller supplies the high temperature refrigerant generated by the compressor (1) to the heat exchange evaporator (8) to lower the temperature of the cooling fluid. Prevents falling below.

5 is a view adding a safety device for preventing damage and breakage of the cooling equipment and the chiller due to the occurrence of the problems listed above. In the configuration of the safety device, the inlet 13a of the solenoid valve 13 is connected to the transfer pipe 31 by the transfer pipe 45 in the configuration of FIG. 4, and the discharge port 13b of the solenoid valve 13 and the DBV 14. Inlet 14a of the connection is connected to the transfer pipe 46 and the discharge port 14b of the DBV 14 is connected to the transfer pipe 36 through the transfer pipe 47.

When the temperature of the cooling fluid is lowered below the set lower limit temperature, the solenoid valve 13 is opened so that the refrigerant heated at high temperature and high pressure by the compressor 1 moves the transfer pipe 31 through the discharge port 1b of the compressor 1. Passing through the inlet (13a) of the solenoid valve 13 along the conveying pipe 45 through the solenoid valve to the discharge port (13b) through the inlet (14a) of the DBV 14 along the conveying pipe 46 Flows into the DBV 14. The refrigerant flowing into the DBV 14 exits the discharge port 14b at the pressure set in the DBV 14, passes through the transfer pipe 36 along the transfer pipe 47, and enters the inlet 8a of the heat exchange evaporator 8. After entering the heat exchange evaporator (8) and raising the temperature of the cooling fluid lower than the lower limit temperature, the compressor (1) passes through the inlet (1a) of the compressor (1) along the feed pipe (37) through the discharge port (8b). Flows into). This cycle is repeated until the temperature of the cooling fluid below the lower limit temperature is equal to the lower limit temperature.

The receiver 4 and the dryer 5 shown in FIGS. 2, 4, and 5 are necessary parts for improving the performance and safety of the chiller and are not necessarily necessary parts. In addition, the oil separator and the liquid separator may be installed although they are not shown in the drawings. The expansion valve 7 and the expansion valve 11 shown in FIGS. 2, 4 and 5 can also be replaced by capillary tubes.

The above design of the present invention is to add the function of the dehumidifier to the chiller can reduce the additional cost incurred by the separate purchase of the dehumidifier for the prevention of corrosion of the equipment due to moisture and to create a comfortable environment and to reduce the power to operate the two devices. You can save money and take up less space. Like the Discharge Bypass method without stopping the compressor, it prevents the compressor from being overloaded due to frequent start-up, which is a problem of the ON / OFF method, and extends the life of the compressor, as well as heating the cooled cooling fluid as in the Discharge Bypass method. It has high energy utilization ability by operating the dehumidifier with the energy to be used for heating without inefficient energy utilization such as cooling again.

Claims (4)

In the chiller consisting of the compressor (1), the condenser (2), the fan motor (3), the solenoid valve (6), the expansion valve (7), and the cooling heat exchanger (8), the temperature of the cooling fluid is additionally set temperature. In order to perform the function of the dehumidifier at a lower time, the DBV 10 is connected to the transfer pipe 34, the DBV 10 is connected to the expansion valve 11, and the expansion valve 11 is connected to the dehumidification heat exchanger ( 12), and the chiller characterized in that the dehumidification heat exchanger 12 is connected to the feed pipe 37. (See Fig. 4). The inlet 10a of the DBV 10 is connected to the conveying pipe 34 through the conveying pipe 40 for the function of the dehumidifier of claim 1, and the outlet 10b of the DBV 10 and the expansion valve 11 are Inlet (11a) of the) is connected to the transfer pipe 41, the discharge port (11b) of the expansion valve 11 is connected to the inlet (12a) of the dehumidification evaporator 12 by the transfer pipe 42 and the dehumidifier evaporator The discharge port 12b of the 12 is connected to the transfer pipe 37 through the transfer pipe 43 and the transfer pipe 37 is configured to be connected to the connector 10c of the DBV 10 through the detection pipe 44. Chiller. (See Figure 4) In the chiller having the structure described in claim 2, the solenoid valve 13 is additionally provided to prevent the temperature of the cooling fluid from falling below the set lower limit temperature by supplying the high temperature refrigerant from the compressor 1 to the heat exchange evaporator 8. And a DBV 14 connected to the compressor 1 and the heat exchange evaporator 8 by a transfer pipe 45 and a transfer pipe 47. (See Fig. 5). The inlet 13a of the solenoid valve 13 is connected to the transfer pipe 31 through the transfer pipe 45 to supply the high temperature refrigerant to the heat exchange evaporator 8 in claim 3, and the discharge port of the solenoid valve 13 A chiller composed of a structure in which 13b and an inlet 14a of the DBV 14 are connected, and a discharge port 14b of the DBV 14 is connected to the transfer pipe 36 through a transfer pipe 47. (See Figure 5)