KR200234358Y1 - The freezing dehumidifier using refrigeratory material and air-precooling method - Google Patents

Abstract

The present invention relates to a refrigerated dehumidifier that efficiently removes moisture contained in compressed air by cooling high temperature compressed air used as a main power source of various pneumatic equipment in the industry. More specifically, it condenses in a condenser of a refrigeration system. The compressed refrigerant is passed through the Richter where the compressed air is discharged, cooled by the evaporative heat of the refrigerant in the cooler, and then reheated and discharged by heat exchange with the dehumidified low-temperature compressed air, and the refrigerant is secondary cooled to circulate. The present invention relates to a refrigeration dehumidifier using a precooling method of refrigerant and air that is designed to significantly reduce the capacity of the battery, reduce power loss, save energy, and reduce noise.

Description

The refrigerant dehumidifier using refrigeratory material and air-precooling method

The present invention relates to a refrigeration dehumidification system and a dehumidifier that efficiently removes water contained in compressed air by cooling high temperature compressed air used as a main power source of various pneumatic equipment in the industry. The refrigerant condensed in the condenser is passed to the Richter where the compressed air is discharged. The refrigerant is cooled by the heat of evaporation of the refrigerant and the compressed air is reheated and discharged by heat exchange with dehumidified low-temperature compressed air. The present invention relates to a refrigeration dehumidifier using a precooling method of refrigerant and air, which is designed to significantly reduce the capacity of the condenser and at the same time reduce power loss to save energy and reduce noise.

Common refrigeration dehumidifiers are compressors (compressors) for compressing gaseous refrigerants, condensers for cooling and condensing the refrigerants to a constant temperature, expansion devices for adiabatic expansion and expansion of liquid refrigerants, heat exchangers and chillers called chillers. It consists of a Richter to reheat the compressed air.

Referring to FIG. 5, a conventional dehumidifying system of such a dehumidifier is a refrigerant gas compressed at a high temperature (80 ° C.) and a high pressure in a compressor. After being stored as a refrigerant liquid storage tank in the rear stage, the filter is passed through a filter drier and an expansion device and is introduced into the chiller as it is evaporated to a particulate state due to a drop in pressure. On the other hand, the hot compressed air flowing into the shell through one air inlet of the Richter is first cooled and flows to the chiller in the process of flowing out to the air outlet of the other side through a zigzag plate installed on the Richter, and in the chiller, the primary cooling is passed through the Richter. After the compressed air and the expansion valve is evaporated in the particulate state and the heat exchange with the refrigerant flowing into the tube, the refrigerant evaporates while the temperature of the compressed air drops below 10 ℃ dehumidification. The condensate generated in this process is discharged from the separator, and the dried air flows to the Richter, where the heat exchanged between the air introduced through the air inlet at a high temperature and the cold compressed air passing through the chiller is regenerated. Heated low-temperature air is discharged by heating it from about 10 ℃ to 25 ℃, and the high temperature inlet air flowing to the shell side is first cooled to be slightly lower than the temperature at which it is introduced, so that the dehumidification is performed by circulating the circulation process to the chiller again. do.

However, the conventional dehumidification system circulates the refrigerant condensed in the condenser into the tube of the chiller to exchange heat with air, and then circulates the compressor again, and in the Richter, the cold air cooled in the chiller and the high temperature inlet air exchange with each other. Since it is a heat-exchanging method of air and air, the condensation of the refrigerant gas is made only in the condenser using forced cooling by fan rotation, so that a large capacity is required to condense the high-temperature refrigerant gas (80 ° C) to low temperature (40 ° C). Since the condenser must be used, the size of the dehumidifier is large, power consumption is high, and noise is generated.

The purpose of the present invention is to solve such problems in the related art. The present invention is to introduce refrigerant condensed in the condenser of the refrigeration system into the Richter to be circulated through the expansion device and the chiller, and hot compressed air is introduced into the chiller. By adopting a new refrigeration system that is discharged to the Richter after dehumidification, the refrigerant cooled first in the condenser is exchanged with cold compressed air cooled to low temperature through the chiller in the chiller and secondly cooled to lower temperature. The present invention provides a refrigeration dehumidifier using a refrigerant and air precooling method which can reduce the size of the condenser and reduce power loss and noise.

1 is an overall flow chart illustrating the dehumidification system of the present invention

2 is an overall flow chart illustrating another embodiment of the present invention

3 is a structural diagram of the dehumidifier according to FIG.

4 is a structural diagram of the dehumidifier according to FIG.

5 is a flowchart of a conventional dehumidifier

<Description of the symbols for the main parts of the drawings>

1: compressor 2: fan motor 3: condenser

4 filter drier 5 expansion device 6 Richter

7 air tube 8 chiller 9 condensate separator

10 wire condenser 10 'condenser 11 compressed air inlet pipe

11 ': compressed air discharge tube 12: refrigerant outlet tube 12': refrigerant inlet tube

13: insulation material 100: dehumidifier body

Hereinafter, the present invention will be described in more detail based on the embodiments of the accompanying drawings.

1 and 2 are a flow chart illustrating the dehumidification system of the present invention, the compressor (1) for compressing the refrigerant in the gas state at high temperature and high pressure, and the forced convection by the fan motor (2) at a constant temperature The condenser (3) for cooling and condensing into a liquid phase, the filter dryer (4) for filtering impurities, the expansion device (5) for adiabatic expansion and expansion of the liquid refrigerant, and the low-temperature and low-pressure refrigerant and the heater (6) (7) A chiller (8) for exchanging the high temperature and high pressure compressed air introduced into the condensate, a condensate separator (9) for separating the condensate generated by the heat exchange, and dehumidification by exchanging heat with the high temperature compressed air entering the cold and dry compressed air. In a conventional refrigeration dehumidification system consisting of a Richter (6) for reheating the compressed air, the refrigerant condensed in the Condenser (3) flows into the Richter (6) and passes through the filter dryer (4) and the expansion device (5). Chiller (8) The refrigerant 1 is circulated to the compressor 1, and the compressed air of high temperature flows into the chiller 8, and is discharged to the richer 6 after dehumidification by the condensate separator 9 to discharge the refrigerant cooled in the condenser 3 first. Heat exchanges the compressed air cooled to a low temperature via the chiller (8) from the heater (6) to heat up the temperature of the compressed air, and the refrigerant is secondly cooled to a temperature lower than the temperature condensed in the condenser (3) Characterized in that made of the pre-cooling method.

In the above condensation method, the condenser 3 is naturally cooled by the wire condenser 10 as shown in FIG. 1, or the forced cooling method by the fan cooling type condenser 10 ′ as shown in FIG. 2. Although the former is a natural cooling method, a relatively large size can be used to obtain a sufficient condensation capacity, whereas the fan motor (2) is not used, so the power loss is reduced and there is no noise. Forced convection cooling by the fan motor (2) has the advantage that the size of the condenser (10 ') can be configured to a small size, but there is a disadvantage that the energy loss and noise slightly occurs than the natural cooling method.

3 and 4 is an exemplary view showing the internal structure of the dehumidifier according to the condensation method of the condenser 3, Figure 3 is a relatively large wire condenser 10 according to the natural cooling method is installed on one side of the dehumidifier main body 100 The chiller (8) and the heater (6) to which the compressor (1) and the filter drier (4) are connected are superimposed in the shape of a coil pipe, and inside the compressed air inlet pipe (11) and a refrigerant having a smaller diameter therein. A chiller 8 is formed in which the outlet pipe 12 is wound up and down and installed, and on the outside, a compressed air discharge pipe 11 'and a smaller diameter refrigerant inlet pipe 12' are wound up and down. 6) is provided in duplicate so that it may be isolate | separated as the heat insulating material 13. As shown in FIG.

4 shows the internal structure of the dehumidifier using the forced cooling condenser 3 using the fan motor 2, the compact condenser 10 having the fan motor 2 attached to one side of the main body 100 of the dehumidifier. ') Is installed and the rest of the structure is the same as the structure of the natural cooling method described above.

Referring to the dehumidification process of the dehumidifier of the present invention as described above, the refrigerant is compressed to a high temperature and high pressure of about 80 ℃ in the compressor (1), the natural cooling method or the fan motor (2) using the wire condenser (10) in the condenser (3) When condensed by forced convection cooling by the refrigerant changes to phase in the liquid state and the temperature of the refrigerant drops to about 45 ℃. When the liquid refrigerant at such a low temperature is sent to the Richter 6, the Richter 6 exchanges heat with cold compressed air (at this time, about 10 ° C.) passing through the chiller 8, thereby reducing the temperature of the compressed air to about 10 degrees. It raises from 45 degreeC to 45 degreeC, and it cools to the temperature of about 40 degreeC from about 45 degreeC which is the temperature at the time of condensation in the condenser 3, and is sent to the filter drier 4. As a result, in the Richter 6, the refrigerant cooled in the condenser 3 is exchanged with the compressed air of low temperature to lower the temperature to the low temperature by the secondary cooling.

On the other hand, the refrigerant sent to the filter drier (4) is passed through the expansion device (5) in the state that the impurities remaining in the refrigerant is filtered, the pressure and temperature is lowered, then flows into the chiller (8) and begins to evaporate, The evaporative heat source comes from the compressed air of the high temperature (about 38 ℃) flowing into the air inlet of the chiller (8), so the compressed air passing through the chiller (8) falls to less than 10 ℃ capable of dehumidification at 38 ℃ in this process The generated condensate is separated and discharged from the condensate separator (9) to dehumidify, and still cold air flows to the next Richter (6) and heat exchanges with the refrigerant cooled to 45 ° C in the condenser (3) as described above. After heating, the discharge is repeated and the refrigerant is repeatedly condensed and the circulation process sent to the filter drier 4 is repeated.

As can be seen from the above process, the feature of the present invention is that the heat exchanged fluid in the Richter 6 is exchanged with the high-temperature compressed air introduced into the inlet and the low-temperature air dehumidified as in the conventional dehumidification system shown in FIG. It is a system that exchanges heat with dehumidified low-temperature air and the first-cooled refrigerant and condenses high-temperature refrigerant gas (80 ° C) at low temperature because there is only one place where the refrigerant gas condenses. (40 ℃) has a disadvantage in that a large capacity condenser (3) has to be used, but the present invention has a primary condenser (80 ℃ → 45 ℃) in the condenser (3) after the role of secondary condenser (6) The secondary condensation at (45 ° C → 40 ° C) is a big advantage that the size of the condenser (3) can be relatively smaller than the conventional one.

The structure of the chiller 8 and the richer 6 of the present invention is a coil pipe shape in which the chiller 8 and the richer 6 to which the compressor 1 and the filter drier 4 are connected as shown in FIGS. 3 and 4. And the air tubes (air engines) and the refrigerant tubes (refrigerant tubes) of the large and small parts constituting them are installed in contact with each other up and down. Therefore, in the tube body of the chiller 8 installed inside, high temperature air and low temperature refrigerants are provided. In the tube of the heater 6 installed outside the heat exchanger, the heat exchanged between the coolant air and the coolant of the lower temperature by heat exchange in the chiller 8 enables efficient secondary cooling of the coolant using the waste heat of the air. Therefore, it is possible to solve the simplicity of the structure and the reduction in size due to the miniaturization of the condenser 3.

As such, the present invention can reduce the capacity of the condenser 3 since the refrigerant is heat-exchanged with the refrigerant that secondary cools the refrigerant in the Richter 6 by using the waste heat of the air, thereby reducing the cost and reducing the electricity consumption. Even when forced condensation by the motor 2 is used, the size of the condenser 10 is reduced, which is more energy-saving than the conventional one, and noise is reduced, and also emits a large amount of heat from the Richter 6 to the compressed air. It is an excellent design with a very large effect, such as a large amount of heat to be removed from the condenser 3 to the atmosphere.

Claims (1)

A compressor (1) for compressing the refrigerant at a high temperature and high pressure, a condenser (3) for condensing the refrigerant into a liquid phase, an expansion device (5) for adiabatic expansion and expansion of the liquid refrigerant, and a filter dryer (4) for impurity filtration, and a refrigerant And a chiller (8) for exchanging compressed air, a condensate separator (9) for separating condensate, and a refrigerator (6) for exchanging dehumidified low-temperature compressed air with hot compressed air to reheat it. In the condenser, the chiller 8 wound up and down in contact with the compressed air inlet pipe 11 and the coolant outlet pipe 12 of smaller diameter up and down, and the compressed air discharge pipe 11 'and the smaller diameter A refrigerant type using a precooling method of refrigerant and air, characterized by overlapping the refrigerant inlet pipe 12 'up and down to install the Richter 6 wound in a coil shape so as to be separated in and out as the heat insulating material 13. dehumidifier.