KR200233434Y1 - Manual extraction unit for hermetic centrifugal chiller - Google Patents

Abstract

The present invention relates to a device for extracting and separating non-condensable gas used in a refrigerator, particularly a hermetic centrifugal freezer. In general, a refrigerator cools a material such as gas or liquid, and according to the application, building cooling and refrigerator Or for various industrial devices and devices. Refrigerators, including turbo chillers, which require strong refrigeration, use water or air as refrigerants to cool, and turbo chillers are operated at lower temperatures than atmospheric pressure using low pressure refrigerants. Can not prevent the ingress of air, moisture and other impurities. This can cause the refrigerator to fail due to a decrease in freezing effect or corrosion due to various chemical reactions.

The present invention extracts the non-condensable gas or 24 moisture collected in the condenser 3K of the refrigerator 70 as described above, and the refrigerant 20 mixed with the non-condensed gas in the atmosphere and the non-condensed gas is again inside the refrigeration circulator. It is a device to increase the freezing effect by always keeping the refrigerant system clean by sending back.

When the compressor 2 of the main body 1 is driven, the non-condensable gas 24 enters the inside of the compressor 2 through a pipe connected from the condenser 3K or the receiver 21 of the refrigerator 70, and the compressor (2) The non-condensable gas 24 which enters inside is compressed by the piston action inside the compressor 2, and is then sent to the condenser 3. The compressed non-condensable gas 24 collected in the condenser 3 is converted into a liquid as it is cooled by the cooling fan 11 attached to the condenser 3, and the liquefied non-condensable gas 24 is divided into the classifier 5 Gathered in). That is, when the liquefied refrigerant 20 and the moisture are accumulated in the lower part of the classifier 5 and the non-liquefied non-condensed gas is collected at the upper part, when the pressure in the classifier 5 rises, residual non-condensing is carried out through the safety valve 18. The gas is automatically discharged and the water is manually discharged by opening the stop valve 19, the sorted refrigerant 20 is characterized in that it is sent back to the condenser (3K) or evaporator (4K).

Description

Manual Extraction System for Hermetic Centrifugal Chillers {.}

The manual extraction and recovery device of the enclosed centrifugal chiller, that is, the device which extracts and recovers the non-condensable gas manually, uses the compression device, the condenser, and the non-condensed gas recovery and sorting device which are the basic principles of the cooling device. It is used.

The present invention is to enable the recovery of non-condensable gas in a short time, and to increase the refrigerating efficiency. Conventionally, as shown in FIG. 4, the refrigerant liquefied in the condenser 3k or the condenser 3k is used. A device was used to draw the refrigerant 20 from the receiver 21 to cool the non-condensable gas 24, and then recover and classify. This conventional method has a lot of load in the compressor (2k), has been shown a phenomenon that the efficiency is slightly lower than the first time in terms of refrigeration effect. In addition, in the installation of a refrigerator or a trial run, a vacuum pump was required to reduce the pressure in the compressor 2k since the piston in the compressor 2k could not operate even when the power was too high. , The main body 1 of the present invention does not require a large-capacity vacuum pump, which is required at the time of installation and commissioning of the refrigerator as compared to the existing automatic extraction recovery device. In addition, the existing automatic extraction device is operated only when the refrigerator system is normally operated, but the present invention is a separate device, the operation is operated separately, when the amount of non-condensing gas 24 and water in the refrigerator is large, every time It can operate from time to time to achieve a relatively large power savings can maximize the refrigeration efficiency.

The present invention is to clean the inside of the refrigerant pipe to increase the freezing efficiency of the freezer while removing impurities effectively in a short time bar, compressor (2), condenser (3), refrigerant 20, and fire A condenser gas 24, a fractionator 5 for classifying water, and an oil tank 8 are provided to the compressor 2 so that the non-condensable gas 24 generated at the upper part of the condenser 3k of the refrigerator 70 is provided. After recovering and compressing it, it is sent to the condenser (3) for liquefaction, and after separating the remaining non-condensable gas, water, and refrigerant from the fractionator (5), the remaining non-condensable gas and water are discharged to the outside, and only pure refrigerant is condenser (3k) or evaporator (4K). Complete by a series of connected devices or circuits.

1 is a manual extraction (의) of the present invention hermetic centrifugal chiller Structure diagram of the recovery device

Figure 2 is an automatic extraction of the conventional hermetic centrifugal chiller (抽 Structure diagram of the recovery device

3 is a partially omitted schematic diagram showing only the basic structure of the refrigerator;

Figure 4 is a structural diagram of a turbocooler showing an embodiment of a conventional turbocooler

Figure 5 is a structural diagram showing the state of use as a structural diagram for easy understanding of the state of use of the subject innovation

<Description of the code | symbol about the principal part of drawing>

1: body 2,2K: compressor 3,3K: condenser

4K: Evaporator 5, 5K: Classifier 7: Winding part

8: oil tank 8a: pressure equalizing pipe 8b: oil pipe

9 electric motor 10 float valve 11 cooling fan

17, 18, 19: valve 20: refrigerant 21: receiver

22 cooling water 23 float chamber 24 non-condensing gas

70: turbo chiller

Hereinafter, a description will be made based on the accompanying drawing of the manual extraction recovery device of the present invention hermetic centrifugal chiller, Figure 1 is a view showing a structural diagram for easy understanding the subject innovation (1), Figure 2 is a conventional turbo refrigerator automatic Figure 3 shows a scavenging device, Figure 3 is a partially omitted structural view showing only the basic principle of a conventional refrigeration device, Figure 4 is a structure of an example of the freezer among many refrigerators made using the principle of the basic freezer of FIG. The system is schematically illustrated in order to make it easy to understand, and FIG. 5 schematically shows an example of a turbo chiller in which the main body 1 of the present invention is used.

As shown in FIG. 3, in the case of mounting or using a refrigerating device in a refrigerator, building cooling, or other industrial process by applying the basic refrigerating principle, the shape and driving method of the refrigerating device may be improved due to the improvement of technology or the variety of objects to be used. Many are true, and there are some differences between refrigeration parts or devices such as compressors (2,2k), condensers (3,3k), evaporators (4,4k), but all of the same parts Same device. Therefore, the compressor (2), the condenser (3), the classifier (5) used as a part of the subject innovation (1) is shown in a variety of shapes that are currently used, even if the same freezer (70) Figure 4 and As shown in FIG. 5, the float chamber 23 or the receiver 21 may or may not be illustrated in various ways.

First, as shown in FIG. 1, the main body 1 of the present invention includes a compressor 2 driven by an electric motor 9, a condenser 3, a fractionator 5 for classifying non-condensable gas 24, and an oil tank 8. It consists of.

The compressor 2 is connected with the condenser 3K and the receiver 21 in the refrigerator 70 by a pipe, and this pipe is wound three or four times while being tapered over a part. The wound portion 7 is provided to prevent this because the non-condensable gas 24 flowing from the condenser (3K) of the refrigerator 70 may be introduced into the liquefied state. In other words, to lower the pressure in the tube to vaporize. The compressor 2 is also connected to a condenser 3 to which a cooling fan 11 is attached via another tube, which is connected to the classifier 5 in a tube. The compressor 2 is also connected to an oil tank 8 which is connected to an oil tube 8b and a pressure equalizing tube 8a. Compressor (2) is a compression reciprocating inside the piston bar, generally moving parts of the metal need oil (oil) to prevent wear or failure, the piston reciprocating to compress the inside of the compressor (2) There is oil. Therefore, in the non-condensable gas 24 sent from the compressor 2 to the condenser 3, at least a lot of oil is contained. Therefore, the oil gradually decreases inside the compressor 2, which causes a failure of the compressor 2. To this end, it is provided with an oil tank (8) to continuously supply oil to the compressor (2), from the oil tank (8) due to the pressure difference with the inside of the oil tank (8) according to the high pressure of the compressor (2) In order to prevent excessive oil inflow into the compressor 2, a pressure equalizer 8a is connected to the upper portion of the oil tank 8 and the compressor 2 so that the air pressure in the compressor 2 and the oil tank 8 is automatically adjusted. It was equipped with.

The cooling fan 11 of the condenser 3 cools and liquefies the non-condensable gas 24. As mentioned above, the classifiers 5 and 5K have some kinds of variations in some variations, but the basic principles are the same and are known and used as the same article.

As shown in Figures 4 and 5, the subject innovation is mainly installed in the turbo chiller (70).

The compressor 2k of the refrigerator 70 compresses the gaseous refrigerant 20 coming from the evaporator 4k. The compressed gas coolant 20 generates heat due to intermolecular collisions and friction as the intermolecular distance approaches, and this heat is heat that the coolant 20 takes from the outside in the evaporator 4k. The compressed high-temperature gaseous refrigerant 20 is liquefied by depriving heat from the condenser 3k. At this time, the liquefied refrigerant 20 is collected under the condenser 3k or the receiver 21. The liquefied refrigerant 20 immediately flows into the evaporator 4k and changes into gas while evaporating from the evaporator 4k, ie, taking away external heat as shown in FIG. The refrigerant 20 converted into gas is sent to the compressor 2k again to repeat the same cycle. At this time, the non-condensable gas 24 that is not condensed above the condenser 3k or the receiver 21 of the refrigerator 70 is generated.

The present invention is an additional device for recovering the non-condensable gas 24 and classifying refrigerant, moisture, and the like which are constituents of the non-condensed gas.

When the compressor 2 of the main body 1 is driven, the non-condensable gas 24 enters the inside of the compressor 2 through a pipe connected from the condenser 3K or the receiver 21 of the refrigerator 70, and the compressor (2) The non-condensable gas 24 which enters inside is compressed by the piston action inside the compressor 2. When the gas 24 is compressed, the distance between molecules becomes closer, and heat is generated by collision and friction between molecules, and the hot non-condensable gas 24 is sent to the condenser 3. The compressed non-condensable gas 24 collected in the condenser 3 is cooled by the cooling fan 11 attached to the condenser 3 and becomes liquid, that is, liquid. The liquefied non-condensable gas 24 is collected in the classifier 5. That is, when the liquefied refrigerant 20 and moisture are accumulated in the lower part of the classifier 5 and the non-liquefied non-condensable gas is collected at the upper part, when the pressure in the classifier 5 rises, it is automatically discharged through the safety valve 18. Water is manually discharged by opening the stop valve 19, the sorted refrigerant 20 is again sent to the condenser (3K) or evaporator (4K) of the refrigerator (70).

The rapid purifying action cleans the inside of the freezer, improving the efficiency of the freezer, saving energy, and enabling the freezer management system to be efficient.

Claims (1)

Manual extraction of hermetic centrifugal chillers In the recovery device, The compressor (2) is formed with a tube connected to the condenser (3K) or the receiver 21 of the refrigerator (70), the tube is tapered over a portion of the winding three or four times to form a wound portion (7), the compressor Another separate tube is formed in (2) and connected to the condenser (3) via the non-return valve (17), which is in turn connected to the classifier (5); An oil tank 8 is provided to supply oil to the compressor 2, and an oil pipe 8b is connected between the compressor 2 and the oil tank 8, and an upper side of the oil tank 8 is provided. That the equalization pipe 8a is also connected; From the condenser 3K or the receiver 21 of the refrigerator 70, the non-condensable gas 24 flows into the compressor 2 through the pipe, and the non-condensed gas 24 introduced into the compressor 2 is returned. The liquefied non-condensable gas (24) flows into the condenser (3), and the liquefied non-condensable gas (24) flows into the classifier (5) so as to classify with the refrigerant (20) and unnecessary materials, and the compression of the compressor (2) is gradually insufficient. Manual extraction of the hermetic centrifugal chiller, characterized in that the oil is continuously replenished from the oil tank (8) Recovery device.