KR100955610B1 - Non-condensed gas extracting device of absorption type cooling and heating apparatus - Google Patents

Abstract

The present invention separates the absorbent liquid and the non-condensed gas from the gas-liquid separator which is separated from the gas-liquid separator passing through the extraction nozzle portion and the introduced non-condensable gas to the gas-liquid mixing tube and passing through the curved pipe portion at the end of the gas-liquid mixing tube. A non-condensable gas scavenging device of an absorption type air conditioner that sends and stores non-condensable gas to a collection tank, wherein the gas-liquid separator, along with a shunt tube arranged concentrically with the gas-liquid mixing pipe, The other end of the non-condensable gas induction pipe connected to one end of the double pipe is connected to the upper end of the inlet of the double pipe by a pumping force of the solution circulation pump. The solution is introduced into the gas-liquid mixing tube through the extraction nozzle portion from the top to the lower portion of the gas-liquid mixing tube. A communication port is formed so as to be communicatively connected to a portion where the pressure is lowered, and a non-condensable gas from the non-condensable gas induction pipe is introduced into the gas-liquid mixing pipe at an upper end of the gas-liquid mixing pipe connected to the bleed nozzle unit. The gas-liquid mixing pipe is formed to have a length extending from the other end of the double pipe to the curved pipe end portion, maintaining the continuous performance of the freezer through the stable collection of non-condensable gas due to the characteristic that the vacuum degree is directly connected to the performance of the absorption chiller It was possible to plan.

Description

NON-CONDENSED GAS EXTRACTING DEVICE OF ABSORPTION TYPE COOLING AND HEATING APPARATUS}

The present invention relates to a non-condensing gas scavenging device of a small absorption air-conditioner, in particular, the absorbing liquid (lithium bromide aqueous solution) by the driving force of the driven pump connected to the non-condensing gas (N ₂ , H ₂ ) formed in the absorption air-cooler To extract the non-condensable gas from the body of the absorption air conditioner, separate the absorbent and non-condensable gas from the gas-liquid separator, and send the absorbent to the absorber, and send the non-condensed gas to the gas storage chamber to increase the amount of non-condensable gas in the gas storage chamber. It is related with the non-condensing gas scavenging device of the absorption type air-conditioner to detect the level of the liquid absorbent of the gas-liquid separator is lowered and automatically discharged to the atmosphere by the vacuum pump.

In general, large absorption type air conditioners use lithium bromide (LiBr) solutions for heating and cooling cycles.

  1 is a schematic diagram of a conventional general large absorption type air conditioner. The non-condensable gas generated in the absorber 5 of the absorption type air conditioner is stored in the collection tank 7 after gas-liquid separation in the gas-liquid separator 8 via the eject 112 through a low pressure gas pipe. The gas-liquid separator 108 moves the lithium bromide (LiBr) solution contained in the non-condensable gas back to the absorber 5 through the absorption liquid circulation tube 104 and collects the non-condensable gas according to the change of the liquid level. Will be sent). The gas sent to the collection tank 7 is discharged to the outside in communication with the vacuum pump.

In general, a large absorption type air conditioner having the above-described configuration, if non-condensable gas is present inside, has a great effect on the performance deterioration of the absorption type air conditioner.

However, unlike the apparatus for extracting the large absorption type air conditioner, the size and operating principle of the existing extractor has a disadvantage in that it is difficult to apply the size and operation principle of the existing extractor to the small type absorption type air conditioner as the life of miniaturization of all the component parts. The problem is that the application of parts that require more than a certain volume of the same structure as in (8) is virtually impossible, and the preparation for this is urgently needed.

The present invention has been made in view of the above drawbacks, and an object of the present invention is to provide a non-condensable gas extraction device suitable for a small absorption type air conditioner, and to provide a non-condensable gas through a double pipe structure at the rear end of the extraction nozzle and the extraction nozzle. Is extracted directly from the absorber, not the condenser, and gas-liquid separated in the double pipe, and stored in the collection tank. Applied.

The present invention has been invented to improve the bleeding performance than the prior art as described above, the main object is that the non-condensing gas generated inside the high temperature regenerator (1) and other absorption chiller to reduce the saturation pressure of the evaporator Rare solution refining device 202 to filter the impurities in the solution by bypassing a portion of the circulating solution by installing a rare solution induction pipe 201 at the rear end of the solution circulation pump by acting as a major factor in the performance of the absorption chiller by increasing the It is sent to the bleeding device which has a double pipe structure designed for small absorption type air conditioner by passing through and it separates the non-condensing gas from the solution and stores it in the collection tank (7) to prevent the deterioration of the freezer caused by the non-condensing gas and to generate corrosion. It is to provide a stable cooling and heating ability by suppressing.

In order to achieve the above object, the present invention has a solution circulation pump that circulates the absorbent liquid by putting a lithium bromide solution, which is a low concentration absorbent liquid, and sends the absorbent liquid to a heat exchanger to exchange heat, and then generates a refrigerant vapor through a high temperature regenerator in the condenser After condensing the refrigerant and sending it to the evaporator to heat the cold water by the latent heat of the refrigerant liquid through heat exchange with the evaporator heat exchanger, the cooling water may be cooled, and hot corrosion may occur through heating using a gas burner in the high temperature regenerator. During the circulation of the solution, non-condensable gas is generated by the reaction with the metal material in contact with the absorbent liquid, and the non-condensable gas moved from the inside of the freezer to the lowest pressure absorber reduces the refrigerant vapor absorption power of the absorber and prevents the cooling ability from dropping. To avoid condensation, connect the bleeding device to the back of the solution circulation pump. In the write-once device of Absorption Cooling & Heating to extract scan,

The bleeding device is a concentric double pipe together with the rare solution induction pipe 201 and the rare solution purification device 202, the extraction nozzle unit 300, the non-condensable gas induction pipe 304, the solution recovery pipe 305 Composed of the bulge pipe 303 and the additional electromagnetic solenoid valve 309, the collecting tank 7, etc.,

The rare solution induction pipe 201 is connected to an intermediate portion where the rare solution moves to the heat exchanger 6 by the solution circulation pump at the outlet of the absorber, and bypasses the bleeding device by applying a smaller diameter than the solution circulation pipe. By controlling the amount of the solution to a small amount, it is a technical feature to minimize the impact on the overall performance change of the freezer.

Here, the main use is that the absorbent liquid passing through the bleed nozzle unit 300 based on the driving force of the solution circulation pump converts the pressure head of the nozzle front to the velocity head of the nozzle rear to a low pressure at the rear end of the bleed nozzle unit 300. Formed to lower the effective pressure and increase the speed, so-called, Bernoulli effect, non-condensable gas is introduced through the non-condensable gas induction pipe 304 connected from the absorber to the rear end of the extraction nozzle unit 300, gas-liquid The rare solution that has passed through the extraction nozzle unit 300 and the introduced non-condensable gas move to the mixing tube 302 to separate the gas-liquid at the end of the gas-liquid mixing tube 302 past the curved tube.

At this time, the separated non-condensable gas is moved to the upper portion by the extraction pipe 303, and collected at the front of the bleeding valve, and when the electronic solenoid valve 309 for bleeding is operated by receiving a signal from the microcomputer, the control device of the absorption chiller, The electromagnetic solenoid valve 309 is opened, and the non-condensable gas collected at the upper part of the outlet side of the extraction pipe 303 moves to the collection tank 7 and is stored.

At this time, when the temperature of the temperature sensor installed in the high temperature regenerator 1 detects a temperature of 140 ° C. or more, the microcomputer automatically controls the opening of the bleed solenoid valve 309.

At this time, the opening of the bleed solenoid valve 309 when the temperature of the high temperature regenerator is 140 ° C. or higher is because the pressure of the absorber is the lowest when the freezer cycle is stable based on sufficient time. To gather with the absorber.

At this time, the outlet liquid level of the extraction pipe 303 is formed in the same manner as the position of the solution recovery pipe 305 where the solution is recovered when the pressure in the absorber 5 and the collection tank 7 is equal to the pressure, the collection tank If the noncondensing gas pressure in (7) is higher, the liquid level will be lower. However, since the amount of non-condensed gas collected is not high, the liquid level is increased due to low pressure of the collecting tank 7 or capillary phenomenon and solution pushing up of bubbles, and the solution flows into the collecting tank, thereby providing additional electromagnetic solenoid valve 309. In order to prevent the solution from accumulating in the collection tank 7 at the time of shutoff, the liquid level is lowered when the pressure of the collection tank 7 is sufficiently increased by adjusting the opening time of the bleed solenoid valve 309. It was devised to ensure the stability of the bleeding device by setting the opening time of the bleed solenoid valve 309 for the bleeding by measuring the time going down the collection tank.

The rare solution refining device 202 is a device for purifying impurities contained in the solution flowing into the rare solution induction pipe 201 to prevent clogging of a small diameter of the extraction nozzle so that the extraction device may operate normally. to be.

At this time, the absorbent liquid separated from the non-condensable gas at the outlet side of the vertebral tube 303 passes through the opening 307a of the first positioner 307 and passes through the curved tube portion of the gas-liquid mixed pipe 302 and the vertebral tube 303. A solution return pipe 305 connected to the front end of the double pipe second positioner 308 is formed along the flow path formed therebetween to return to the absorber.

Hereinafter, with reference to the accompanying drawings, an embodiment of an absorption type air conditioner having a bleeding device employing a double pipe structure according to the present invention will be described in detail. In FIG. 2, FIG. 2 shows a schematic moving direction of a solution and a non-condensable gas in a small absorption type air conditioner according to an embodiment of the present invention, FIG. 3 shows an overall schematic view of the bleeding apparatus, and FIG. 4 is FIG. The sectional drawing of the bleed nozzle part, the non-condensable gas inlet pipe, and the solution collection pipe of the bleeding apparatus shown in FIG. FIG. 5 is a detailed view of a first positioner forming a double pipe structure among the components shown in FIG. 3, and descriptions of the same parts as in the prior art will be omitted.

In addition, as shown in Figures 2, 3 and 4, the extraction device is connected to the rear end of the solution circulation pump, starting with a rare solution induction pipe 201 for bypassing a part of the rare solution to the extraction device, The solution passes through the rare solution purifier 202 to purify the impurities in the solution, passes through the bleeding nozzle 301, and the pressure head is converted into a velocity head to form a pressure lower than the absorber 5 after the bleeding nozzle 301. Accordingly, non-condensable gas flows from the absorber 5 through the non-condensable gas induction pipe 304 connected to the rear end of the extraction nozzle 301 and flows to the gas-liquid mixing pipe 302 connected to the extraction nozzle. And the non-condensable gas is mixed with the absorbent liquid passing through the extraction nozzle 301 at the end of the gas-liquid mixing tube 302 to the upper portion of the outlet side of the plural duct, and the absorbent liquid is the first position of the double pipe. The vertebral tube 303 through the opening 307a of the setter 307. According to the mobile returns to the absorber through the second recovery solution (305).

In addition, the non-condensable gas collected at the upper part of the outlet side of the bulge pipe 303 is moved and stored in the collection tank 7 when the bleed solenoid valve 309 is opened, and the bleed solenoid valve 309 is provided. Detects the temperature of the high temperature regenerator (1) is automatically opened by the microcomputer in the conditions above 140 ℃, it is configured to close after a certain time.

In addition, the rare solution induction pipe 201 is inserted into the center of the pipe connected to the rear end of the solution circulation pump to prevent clogging due to the welding bead during the pipe welding, the rare solution purification device in the flow direction of the induced solution ( 202).

In addition, the rare-solution refining apparatus 202 employs a cylindrical reticular member for filtering impurities in the solution, and the reticular member is positioned between the inner cylinder and the outer cylinder.

In addition, the extraction nozzle unit 300 is composed of a flange unit 300b surrounding the extraction nozzle 300a and the extraction nozzle 300a, the lower part of the outer cylinder is connected to the double pipe second positioner 308, the structure is blocked It is.

In addition, the extraction nozzle unit 300 has a structure having a small circular opening so that the pressure head can be switched to the speed head as shown in FIG. The upper portion of the bleed nozzle unit 300 is connected to the rare solution inlet pipe 201, the lower portion of the bleed nozzle unit 300 has a structure that is connected to the gas-liquid mixing pipe 302.

In addition, the gas-liquid mixing pipe 302 is located inside the concentric axial tube 303, the upper portion is connected to the outlet of the extraction nozzle 301 and has a communication port (302a) to allow the inflow of non-condensable gas It has a structure. The lower portion is formed of a U-shaped curved tube portion and the end is connected to the double pipe first positioner 307 and the vertebral tube 303.

In addition, the length of the outlet portion 303 is formed so that the length of the outlet portion is longer than the length of the inlet portion, it is configured to ensure more space to accumulate non-condensable gas until the set pressure.

On the other hand, reference numeral 310 is an enlarged pipe portion of the enlarged form that the cross-sectional area is widened to the additional nozzle unit 300.

In addition, the vertebral tube 303 has a structure containing the gas-liquid mixing tube 302 on the concentric shaft therein, and the upper portion is connected to the second pipe locator 308 without an opening and blocked, and the solution on the upper side. It has an opening connected to the recovery pipe 305, the lower portion is passed through the U-shaped curved pipe end is connected to the vertebral tube 303.

In addition, the non-condensable gas induction pipe 304 is connected to the outer cylinder of the absorber and the rear end nozzle, the opening position of the absorber is located above the level of the absorber liquid level so that only the non-condensable gas remaining in the non-absorber is introduced.

In addition, the solution recovery pipe 305 connects the absorber and the vertebral tube 303, and the opening of the absorber is located at the lower portion of the non-condensable gas induction pipe 304 and absorbs the solution passing through the vertebral tube 303 after gas-liquid separation. It serves to return.

In addition, the solution recovery pipe 303 is a place where the non-condensable gas and the absorbent liquid that have passed through the gas-liquid mixing pipe 302 are separated, and the non-condensed gas is collected at the upper level of the liquid level. It is connected to the bleed solenoid valve 309, the lower portion is configured to be connected to the extraction pipe 303 to move the separated absorbent liquid.

Also, the double pipe first positioner 307 shown in FIG. 5 is the most important component for forming the gas-liquid mixing pipe 302 and the vertebral tube 303 in a concentric shaft structure. It serves as a moving passage.

In addition, the second pipe locator 308 is also the most important component for forming the gas-liquid mixing pipe 302 and the vertebral tube 303 in a concentric shaft structure, and the gas-liquid mixing pipe 302 passes through the opening. It has a blockage structure that prevents the solution from being transferred to the bleed nozzle.

In addition, the bleed valve 309 is an important component that is located between the collection tank 7 and the outlet of the plural duct 303 to store non-condensable gas in the collection tank 7. By controlling the opening and closing of the bleed valve, it prevents the backflow of the collection tank of the solution and enables the stable collection of non-condensable gas.

In addition, the bleed solenoid solenoid valve 309 is responsible for opening and closing the bleed valve 309 in response to a signal from the microcomputer and is located outside the bleed valve.

Therefore, since the scavenging device based on the above structure is designed to be optimized for a small absorption type air conditioner, the size and weight of the device can be realized.

In addition, by adding a non-condensing gas that causes the deterioration of the absorption type air conditioner due to the increase in the saturation pressure of the absorber due to the non-condensation gas generated inside the absorption type air conditioner, it is possible to limit the performance degradation of the absorption type air conditioner.

As described above, the absorption chiller having a bleeding device having a double pipe structure of the present invention is capable of miniaturization of the device based on the structure and principle different from the bleeding device applied to a large-size absorption chiller, and thus for the manufacture of a compact absorption type air conditioner. It is in use by developing and realizing the stubborn extraction device, and plays an important role in maintaining the performance of the refrigerator. In order to maximize the use of the limited space in the manufacture of small absorption refrigerators, the simplification of the bleeding device is required. Compensation for the failure to attach the phase vacuum pump is to store the non-condensable gas in the collection tank has the advantage of enabling the addition and storage of non-condensable gas for a certain period of time. Since small absorption air conditioners are several times smaller in size than large absorption air conditioners, the amount of non-condensable gas generated inside is small and the collected non-condensable gas is connected to the collection tank once a half year based on regular maintenance of the product. It is possible to perform the vacuum extraction operation through, and it has the advantage that no separate maintenance is required, and the additional advantage of reducing the cost and power consumption is not necessary because there is no need of the vacuum pump and constant driving attached to the conventional large absorption type refrigerator. have.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

1 is a schematic diagram of a bleeding apparatus of a general large absorption type air conditioner,

2 is a schematic structure and a bleeding device of a small absorption type air conditioner,

3 is an enlarged view of a bleeding device of the absorption type air conditioner of FIG. 2;

4 is a cross-sectional view of a double pipe structure of the bleeding apparatus according to the present invention;

5 is an enlarged view of a key component part of a bleeding apparatus according to the present invention;

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

  201: rare solution induction pipe 202: rare solution purification apparatus

  300: additional nozzle 300a: additional nozzle

  302: gas mixture tube 303: extraction pipe

  304: non-condensing gas induction pipe 305: solution recovery pipe

  307: double pipe first positioner

  308: second pipe positioner second positioner 309: bleed solenoid valve

Claims (7)

Absorption liquid and non-condensing in the gas-liquid separator in which gaseous solution passing through the extraction nozzle unit 300 and the introduced non-condensable gas move to the gas-liquid mixing tube 302, and the gas-liquid separator is separated at the end of the gas-liquid mixing tube 302 through the curved pipe part. In the non-condensing gas scavenging device of the absorption type air-conditioner for separating the gas and sending the absorbent liquid to the absorber, and sending the non-condensable gas to the collection tank, The gas-liquid separator, The gas-liquid mixing pipe 302 and the conduit 303 arranged concentrically with the inlet side and the outlet side is composed of a double pipe that is arranged in parallel through the center of the curved pipe portion, The other end of the non-condensable gas induction pipe 304 connected to the absorber at one end thereof is an upper end portion of the inlet side of the double pipe, and the gas-liquid is supplied through the rare liquid induction pipe 201 by the pumping force of the solution circulation pump. The rare solution is connected to the mixing tube 302 so as to communicate with a portion where the pressure decreases while passing through the bleed nozzle unit 300 from the top, At the upper end of the gas-liquid mixing pipe 302 connected to the bleed nozzle unit 300, a communication port 302a is provided such that non-condensing gas from the non-condensing gas induction pipe 304 is introduced into the gas-liquid mixing pipe 302. Formed, The gas-liquid mixing pipe (302) is a non-condensing gas scavenging device of the absorption type air conditioner, characterized in that formed to have a length extending to the end portion of the bent pipe portion on the other discharge side of the double pipe. The method of claim 1, The gas-liquid separator is disposed between the outer surface of the gas-liquid mixing tube 302 in which the non-condensable gas and the absorbing liquid are mixed and moved, and the inner surface of the vertebral tube 303 in which the gas-liquid separated absorbing liquid is recovered. A non-condensing gas scavenging device of an absorption type air conditioner, characterized by being positioned concentrically by one locator (307) and a second locator (308). The method of claim 2, The weight pipe 303 has a structure containing the gas-liquid mixing pipe 302 on the concentric shaft therein, the upper portion is connected to the second pipe locator 308 without an opening is blocked, the second locator The non-condensable gas scavenging device of the absorption air-conditioner, characterized in that the lower side of the 308, the solution recovery pipe 305 is connected in communication with the absorber. The method of claim 3, wherein The first positioner (307) has a radial opening (307a) is provided with a non-condensing gas scavenging device of the absorption type air conditioner, characterized in that composed of a recovery passage to the absorber (5) side of the gas-liquid separated absorbent liquid. The method of claim 2, The non-condensable gas separated by the gas-liquid separator of the double pipe structure can move to the collection tank 7 when the bleed valve 309 is opened, so that the temperature sensor installed in the bleed solenoid valve 309 in the high temperature regenerator is the solution temperature. The non-condensing gas scavenging device of the absorption type air conditioner and air conditioner, wherein the solenoid valve 309 is automatically opened by the microcomputer to detect a case of 140 ° C. or more, and is controlled to supply the separated non-condensable gas to the collection tank quickly. . The method of claim 1, In the middle of the rare solution induction pipe 201, in order to prevent clogging of the additional nozzle part due to impurities in the gas-liquid separator of the double pipe structure, a rare solution purification employing a cylindrical reticular member that filters impurities contained in the solution is filtered. Non-condensing gas scavenging device of the absorption air-conditioner, characterized in that the device is connected. The method of claim 1, The extraction pipe 303 is a non-condensing gas extraction device of the absorption type air conditioner, characterized in that the length of the outlet is formed longer than the length of the inlet.

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