KR100370603B1 - Gas removal device of cooling and heating pipe - Google Patents

Abstract

The present invention relates to a degassing apparatus of a heating and cooling pipe, and more particularly, the present invention comprises a degassing device of a compact control device and an expansion tank for expanding and discharging the gas present in the water and these devices are modular It is an object of the present invention to provide a degassing device that is assembled.

The present invention maintains the proven functions of conventional known devices as a whole and structurally improves them to enable mass production or at the same time to enable simple limestone removal or debris removal of heating and cooling circulation systems. Is solved by a degassing device and expansion tank with compact control.

Description

Gas removal device of cooling and heating pipes

The present invention relates to a gas removing device of a heating and cooling pipe, and more particularly, the present invention is composed of a gas removing device of a compact control device and an expansion tank for expanding and discharging the gas present in the water and these devices are modular It is an object of the present invention to provide a degassing device for heating and cooling pipes that are assembled.

Conventionally, such an expansion and gas removal device is well known as German Utility Model Patent DE 29510126 U1 and German Patent DE 19705741.

It is an object of the present invention to maintain the proven functionality of such known devices as a whole and to structurally improve these devices to enable mass production or at the same time to enable simple limestone removal or debris removal of heating and cooling circulation systems. The object is solved by a degassing device and expansion tank with compact control.

In the present invention, the permanent magnet installed at the inlet of the circulation pipe of the degassing expansion tank converts the needle-shaped limestone fragment into a thin piece of limestone crystal. This thin flake limestone crystal is activated in the heating and cooling circulation system. Pressure increase in the degassing expansion tank of the present invention converts the flake limestone crystals into amorphous and sandstone limestone in a second step. This limestone can be removed lightly through the purification lid.

The relaxation regulator, a regulator of the compact regulator, causes liquid (water) below the operating pressure to flow into the degassing expansion tank in the circulation pipe. In this position, a fully automatic safety overflow valve can be used which opens on the principle of pressure differential. The pressure differential, for example, amounts to 0.2 bar. Therefore, the magnet valve device, which is an additional device for opening the pressure differential valve by electric control, can be selectively used. By not installing the magnet valve device, the electric control device is simplified accordingly, but no malfunction is caused.

The degassing expansion tank of the present invention supplies supplemental water to compensate for the loss of circulating water. This make-up water may also contain limestone. To prevent limestone from entering the heating and cooling circulation system, German Industrial Standard 2035 recommends softening hard water, that is, removing limestone by heat (thermodynamics). According to the present invention, the salt can be removed in accordance with a pressure relaxation (reduction) action, and limestone debris and oxidized debris deposited on the bottom can be easily removed or cleaned.

Conventional older boiler devices often consist of three independent additional devices: a pressure holding device with an expansion tank, a degassing device and a make-up water device.

In this case, assembly of the apparatus, operation and repair of the apparatus were performed separately accordingly. Several years ago, a combined device was known that combines the pressure maintenance, expansion, degassing, and replenishment water supply of a cooling and heating circulation system into one unit. The connection to the heating and cooling circulation system consists of a circulating piping (circulating piping for the introduction of circulating substances containing gas for the purpose of removing gas) and a separately installed expansion tube (the static pressure at the zero point of the heating and cooling circulation system). Expansion tube for measurement). The utility model patent (No. DE 29510126) discussed above refers to such a composite device.

Such expansion and degassing devices were produced on demand through the manual industry.

Electronic control devices that regulate the flow of the program and indicate the failure of any function control belong to this level of skill. Each functional part and regulator (valve, pump, pipe connection, sense and electrical regulator) is assembled in various places in the degassing expansion tank. After the invention of this composite device, the functional part and the regulator are compact in one assembly area. And permanent magnets are assembled to the circulation tube. The assembly area according to the invention is next to the expansion tank. The expansion tank receives and stores water (volume) to balance temperature and pressure changes from the HVAC system. The amount of expansion is usually calculated according to the German Industrial Standards for water containing gas. The size of the expansion tank is to be calculated by the above method or slightly less. This is because degassed water has a lower coefficient of expansion.

The expansion water of the tank is isolated from the atmosphere. This separation of oxygen is a prerequisite for the corrosion protection of expansion tanks and the corrosion protection of all parts of the heating and cooling circulation system. The pressure in the tank is lower than the operating pressure of the HVAC system and represents a pressure below atmospheric pressure.

The purge lid installed on the front of the tank wall is a waterproofing profile that ensures water resistance between the "pressure free tanks".

Parts supplying water (tanks, pipes without pressure) are insulated (eg insulated with fiber or reflective foil); This envelope prevents heating loss and water droplets. The tank cover, which allows the air pads to be inserted between the tank and the outer covering at sufficient distance from the tank, aids insulation. Height adjustable screw legs below the bottom of the tank allow for horizontal adjustment even if the surface of the installation site is not flat.

In the compact regulator the following degassing takes place:

The circulation tube is simultaneously connected to the expansion tube. There is an overflow valve or a pressure differential valve at the end of the expansion tube. In this way, the heat medium containing the gas may flow into the gas removal tank.

In one operation, when the overflow valve is opened by an additional device, the magnetic valve device, the heat medium flows out of the heating / cooling circulation system and into the degassing expansion tank. The opening and closing of the magnet valve is determined by the pressure value set in the overflow valve. The pressure on the cooling and heating circulation system is the total pressure combined with the static pressure (in the expansion tank) and the dynamic pressure (inundation pressure) in the connecting pipe. When the heat flows into the degassing tank through the overflow valve, the pressure of the cooling and heating circulation system is lowered. The overflow valve is closed again at a pressure difference of up to 0.4 bar.

In another example, the overflow valve opens when there is a pressure differential of 0.2 bar.

An advantage of the present invention is that the compact adjusting device can be assembled in advance. Until now, regulators, pumps, electronics and make-up water supplies were assembled separately from each other by hand. Each device was connected to a given system via a pipe according to a given location and requirement. Such separate assembly is expensive. Moreover, in operation, the devices are inconsequential and overlap or fail with each other.

According to the present invention, the connection assembly of the tank and the adjusting devices is simple and obvious, ensuring safe operation and allowing mass production of the assembled parts. In particular, the mass production of this assembly is inexpensive.

Important components for maintaining pressure, degassing / corrosion prevention and replenishment water supply are:

One pressure holding device, one pressure differential valve or one overflow valve, one hydraulic pressure gauge, one pressure gauge with measuring gauge on the expansion tube, one permanent magnet, one expansion tube, one supplementary water magnetic valve and One vacuum breaker in the space (Note: space with water pipes = toilet, bathroom, kitchen), one gas discharge valve and one ball with a water saving valve. The make-up water valve and the moisture chamber are connected by pipes, in particular by plastic hoses, which ensures system separation as required by the German Industrial Standard.

The electric control panel is in a box with a lid open. Openable lids are equipped with regulators such as power on and off, fault signaling devices that operate in the event of a pressure deficiency.

1 is an overall structural diagram of the present invention

Figure 2a is an explanatory view showing the sedimentation layer of the degassing expansion tank

2b is an illustration showing the cleaning of the sedimentation layer

3 is a schematic explanatory diagram of a supplemental water supply

4 is an internal structure diagram of the device of the present invention;

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

1a: degassing chamber 2: make-up water pipe 2a: make-up water storage room

2b: supplemental water valve 3: vacuum crusher 4: gas discharge valve

5: Safety Flood Device 6: Flood Room 7: Rubber Waterproofing Material

8: Distance Keeper 9: Gas Removal Expansion Tank 9a: Tank Wall

10 tank lid 11 tank surface 14 non-return valve

15 suction tube 16 outlet tube 17 expansion tube

18: level measurement glass 18a: water level lower limit switch 19: pressure differential valve

20: pressure holding pump 21: pressure sensor 22: pressure gauge

23 box 24 permanent magnet 25 compact control device

26: assembly area 27: ground plate

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a temporary embodiment of the present invention wherein the heating and cooling circulation system is shown as 1.A5 as a cooler and the permanent magnet 24 is connected to the suction pipe (15). The suction pipe 15 forms a circulation pipe together with the outlet pipe 16. The piping water flows from the retrograde pipe of the heating and cooling circulation system (1.A5) through the suction pipe (15), through the permanent magnet (24), and through the water saving valve (1.7) of the outlet pipe (16). It is connected to the circuit of the circulation. The conduit is located in the circulation pump (water circulator) next to the suction port in the circulation tube. The suction pipe 15 and the outlet pipe 16 are connected to the expansion pipe 17 through the connecting pipe 1.9. The expansion pipe 17 overflows the liquid through the overflow valve 1.16 to the degassing expansion tank 9. A pressure gauge 22 and a pressure sensor 21 are connected to the adjusting device and the gas removing device 1.A4 in front of the overflow valve 1.16. At this time, the pressure sensor 21 measures and monitors the operating pressure in the expansion tube 17.

2 schematically shows the various regions of the degassing expansion tank 9. Water flowing from the water supply section 40 of the air-conditioning circulation system (for example, from the air-conditioning circulation system 1.A5 in FIG. 1 or from the radiator in FIG. 4) is discharged by the gas in the upper gas layer 41. Relaxes. Water is stagnated in the safety layer 46 below it. Salt and oxidant-floating fragments precipitate in the precipitation layer 42 near the bottom of the degassing expansion tank 9. At this time, such a hard material, in particular limestone accumulates in the layer 43. According to Figure 2b this precipitate can be suction filtered through the suction of water. To this end, the suction hose 45 of the cleaner 44 is introduced through the purifying port considering the height of the relaxation region and the settlement region in the gas removal expansion tank 9.

Figure 3 schematically shows the replenishment water supply acting as a system separation. Fresh water (tap water) is relaxed as a medium for plumbing in the HVAC system. This results in partial degassing. The partially degassed water then flows into the hot water of the degassing expansion tank 9, for example according to FIG. 4. Through this process, heating causes hard water softening.

4 shows another embodiment of the invention in which the permanent magnet 24 is installed in the suction tube 15. In this embodiment, the liquid generally flows from the circulating tube (at the pressure of the circulating pump) through the permanent magnet 24 to the suction tube 15 and again through the outlet tube 16 to the retrograde tube of the heating and cooling circulation system.

This modular device requires that 15, 16 and 17 of FIG. 4 be connected to a heating and cooling circulation system. The device consists of two structural groups. The first structural group is a degassing expansion tank (9) made of stainless steel. The gas removal expansion tank 9 has a structure in which the tank ground 11 and the tank lid 10 are disassembled and assembled, and is sealed from the outside. The degassing expansion tank 9 has a connector for connecting pipes or for installing valves 2b, 3 and 4. This connector is only present in the assembly layer 26, preferentially in the tank lid 10.

The second structural group is a compact control device 25 assembled on the outer surface of the degassing expansion tank 9, in particular on the tank lid 10. The compact control device 25 consists of a pipe connection for the operation of the degassing expansion tank 9 and other connections in the assembly layer.

This modular structure enables the mass production of the degassing expansion tank 9 and the compact regulator 25.

Piping connectors in the assembly area 26 include the following.

One inlet for the connection of the pressure holding pump 20

-Inlet port configured as a pressure differential valve 19 and connected to a separately installed expansion pipe 17 (This inlet serves to remove the medium of the pipe water from the suction pipe 15 and the outlet pipe 16. To this end, The pressure differential valve 19 is equipped with an electrical control device and a connection pipe for the suction pipe 15 and the outlet pipe 16.)

-Outlet for discharging medium with gas discharge and safety flooding device (5)

Vacuum breaker connector

Supplemental water supply device (1), (2), (2a), (2b)

The degassing expansion tank 9 was assembled with the following accessories.

-Cylindrical tank wall made of stainless steel (9a)

Tank ground (11)

Tank lid (10)

Insulation plate (9b)

Level control device 53 consisting of two water level switches 34 and 34a

Suction valve and drain valve

Here, the tank wall 9a, the tank surface 11 and the tank lid 10 are made of stainless steel.

Alternatively, it can also be made of a plastic layer over the steel surface.

The cylindrical tank wall 9a is made by rolling a stainless steel plate round or wrapping it. The stainless plate is known and passed between two circular mills. The rolling mill pressure bends the stainless plate. The modified stainless steel plate seals the overlapping corner ends. This seam is sealed in a manner that protects the environment, for example by ironing with rings and then joining. Welding is not used except in special cases as it requires follow-up to be cleaned with lye, for example to prevent corrosion.

The tank surface 11 and the tank lid 10 are assembled to a cylindrical tank wall 9a using a fixing device (screw or spanner) that can be disassembled and assembled. To this end, elastic rubber joints (string = thick waterproof material 7 made of rubber) are inserted into the ring-shaped edges of the tank wall 9a to waterproof them. The distance retainer 8 is welded above and below the tank wall 9a. The tank surface 11 and the tank lid 10 are fastened with screws, for example, by the distance holder 8. After tightening the screws, only the gap for the thick waterproof material 7 of rubber is left between the tank edge to be waterproofed and the ground, ie the lid surface. This gap prevents excessive squeezing of the thick waterproof rubber material. In this assembly technique, the distance maintainer 8 is located on the edge of the tank wall 9a and forms a stop of the ground 11 and the lid 10 of the degassing expansion tank 9 to provide elasticity due to incorrect assembly. Rubber thick waterproof material (7) to prevent the destruction safely.

The tank surface 11 is supported by a leg at the place where the gas removal expansion tank 9 is installed. The legs have screws that can be adjusted when the ground is uneven.

The degassing expansion tank 9 with reduced pressure also serves as a sedimentation tank for depositing debris generated in the heating and cooling circulation system, in particular in the heating and cooling circulation system. This debris can be removed at any time by removing the tank lid (10).

The tank surface 11 prevents the degassing expansion tank 9 from being deformed by high pressure or low pressure by the reinforcing material.

The tanks are stacked with an insulating plate 9b treated with aluminum at a certain distance. One part of the space between the tank wall 9a and the heat insulating plate 9b is filled with air. The inner aluminum layer of the heat insulating plate 9b reflects heat radiation (heat rays) from the tank and returns it to the inner space. The heat insulating action of the heat insulating plate 9b is on the one hand the insulating role by the heat insulating material (optical fiber), and on the other hand, when the internal space between the tank wall 9a and the heat insulating plate 9b is filled with air, By returning a certain portion of the light beam.

The water level glass protrudes outward from the tank wall so as not to be covered by the heat insulating plate 9b. The vertical glass tubing as the connected tubing serves to show the changing water level of the degassing expansion tank 9. In addition to the ability to directly monitor the water level, glass piping has one other function. There is a float in the glass pipe that moves with the water level. This float acts as a switch that acts when the water level reaches the upper or lower limit. It may be an upper limit lead-contact or a lower limit lead-contact or may be a mercury switch or a spring switch. The reed-switch sends a signal to the electric controller 100 that the level to be adjusted has reached the upper or lower limit.

The outlet part of the water level glass is designed with a discharge valve suitable for the type of protrusion of the bottom part.

The pressure of the degassing expansion tank 9 is significantly lower than the operating pressure of the medium of the heating and cooling circulation system found in the hydraulic pressure gauge 22. The pressure gap between the tank pressure and the operating pressure is maintained and monitored by a compact regulator 25 installed therebetween. For this purpose, a pressure differential valve 19 and a pressure holding pump 20 are provided between the air-conditioning circulation system and the gas removal expansion tank 9. Pressure sensor 21, water level switch, electric control device 100, circulation pipe 15, 16, expansion pipe 17, connecting pipe, check valve 14, hydraulic pressure gauge 22 also Figure 1 It is connected as follows and works as interlocking function. When water is sucked and the water level rises from the lower limit to the upper limit, air is discharged to the relaxation valve and the pressure holding pump 20 is operated to settle the water level to the lower limit. Low pressure appears because air cannot enter the barrel (piston action)

The pressure differential valve 19 is protected from contamination by a filter. Large pieces that are scooped out of the HVAC system by the filter are commutated while fine pieces are cleaned through the pressure gap between the operating pressure and the significantly lower tank internal pressure. The reduced tank pressure is not equal to the external loan pressure. The degassing expansion tank 9 is blocked by the atmosphere at low pressure and is opened through a control device (vacuum crusher 3, gas discharge valve 4) connected to the atmosphere when the gas is discharged.

Accordingly, the degassing expansion tank 9 exhibits a predetermined initial pressure and a low pressure. However, the walls 9a, the ground 11 and the lid 10 as tank components can be easily produced and assembled easily and the waterproofing between the tank components is reliable. The ground plate 27 is waterproof to block the air to waterproof the degassing expansion tank 9.

Compact control device 25 is installed on the top of the ground plate 27 as follows.

Supplementary water supply device according to the water level 1, 2, 2a, 2b This device is closed and depressurized from the heating and cooling circulation system through the degassing chamber (1a) which separates the system with the supplemental water pipe (2) where fresh water enters. Separate into tanks.

A gas discharge valve 4; A gas discharge valve (4) for discharging gas from the degassing expansion tank (9) to the surroundings under atmospheric pressure for the release of gas and, optionally, a liquid medium.

-Safety flooding devices for liquid media 5

Vacuum crusher 3 for limiting the low pressure of the degassing expansion tank 9

A pressure differential valve 19; The valve is an electrical drive that is used as a relaxation valve for liquid media.

Pressure holding pump (20)

Various non-return valves (13) and (14)

Electric controller (100)

These regulators are responsible for implementing a method that combines the functions of maintaining pressure, degassing and circulating, medium under pressure (corrosion prevention) and supplemental water supply.

The compact control device 25 is an assembled module that is connected to the tank in the assembly area as long as the positioning and placement are free. This adjusting device is in particular connected above the tank lid 10 in the assembly area 26. In small installations, the ground plate 27 may simultaneously form the tank lid 10. In large installations the adjusting device can be preassembled independently of the tank lid 10. In this pre-assembly certain accessories of the regulating device (eg the pressure stage of the vacuum crusher 3 or the pressure holding pump 20) may be installed on the ground plate 27. The non-return valve is mounted at the end of the suction line of the pressure holding pump to prevent the reverse flow of the medium due to malfunction.

The assembly area 26 is not limited to the tank lid 10. It is also within the scope of the present invention to connect the compact control device 25 to the degassing expansion tank 9 on the tank surface 11. The joints of the tubes protrude inwardly of the degassing expansion tank 9 by the connector. The length of the fusion tube is adjusted to either end up in the liquid medium region or end up in the gas volume region above it-depending on the function of the regulator that is properly coupled with the connector, in the preferred structural embodiment assembly zone 26 is a tank lid. Includes five pipes above (10) and mentioned above. If the assembly area 26 is moved to the tank surface 11, only the supplemental water supply devices 1, 2, 2a, 2b should be additionally considered. The replenishment water supplied to the degassed expansion tank 9 at which the pressure is reduced consists of a storage tank higher than the tank or a lower storage tank in which a pump for raising water is installed.

Since the replenishment water supply takes place not only in the replenishment water pipe 2 but also in the safety flooding device 5, the water supply pipe network is separated from the heating / cooling circulation system (system separation). This stability ensures that no piping medium can enter the water supply network. Even if the pressure drops and the closed degassing expansion tank 9 fails to stop the operating pressure, it ensures that it cannot enter the water supply network.

At the same time, the medium must be concentrated as little as possible through the system separation. The end of the degassing expansion tank (9) is made of thick waterproof rubber at the upper and lower edges of the ground plate (27), and also consists of water container in the supplemental water storage chamber (2a) or in the degassing chamber (1a).

The degassing expansion tank 9 cannot exchange gases freely with the surrounding air, but only with limited gas exchange. Gas exchange means that the gas separated from the medium reaches the flood chamber 6 of the degassing chamber 1a through the gas discharge valve 4. However, in the case of a failure, on the contrary, air enters the degassing expansion tank 9 through the vacuum crusher. This special case is intended to prevent damage to the tank at too low a pressure.

In the embodiment of the present invention, the ground plate 27 has three holes designed as valve seats, not for general piping. The degassing chamber 1a has two rooms, namely a supplemental water storage chamber 2a and a flooding chamber 6, which is open above and below the ground plate 27 to be waterproofed with a thick rubber waterproofing material 7 below. It is lost. The two rooms are separated by vertical separation walls; The make-up water storage chamber 2a accommodates water in normal operation; The flooding chamber 6 of the degassing chamber 1a is connected to the safety flooding device 5 and immediately releases any remaining medium or remaining gas. Excess amount of make-up water can overflow from the overflow chamber (6) to the make-up water storage chamber (2a) through the hole in the separation wall in case of failure, and the excess medium passes through the gas discharge valve (4) in case of failure. Can penetrate into the floodplain (6). Except for this safety flooding device (5), the degassing chamber (1a) is a valve (2b) integrated into the ground plate 27, the vacuum crusher (3), and the gas discharge valve (4) is a degassing tank (9) Determine the pressure of This valve also serves to fix the gas removal chamber 1a. The make-up water valve 2b is located in the make-up water storage chamber 2a of the degassing chamber 2a, and in the make-up water storage chamber 2a, the water container operates the water level valve. The vacuum crusher 3 and the outlet for gas discharge lead to the flooding chamber 6 of the dry degassing chamber 1a, if normal.

The vacuum crusher 3 is a spring-connected regulator, in particular assembled at the bottom of the ground plate 27 and above the gas discharge valve 4. The replenishment water valve 2b, which is regulated by the water level valve for replenishment water supply, is particularly assembled in the replenishment water storage chamber 2a near the ground plate 27. These three valves have structural features in common. In other words, the metal valve plate has a waterproof membrane in contact with the valve seat, which is a part of the ground plate 27.

A supplemental water valve 2b for suction of supplemental water is connected to the supplemental water storage chamber 2a through a water level valve. The vacuum crusher 3 is operated by a spring which limits the low pressure of the degassing expansion tank 9 to about 300 mm HG. It is operated by elevated pressure (piston principle) as the level rises in the degassing expansion tank.

The electric regulator 100 receives the measurement signal of the water level upper limit, the measurement signal of the water level lower limit, the measurement signal of the installed automatic timer, and generally the measurement signal of too low operating pressure of the pressure sensor 21. The electric regulator 100 sends an adjustment signal to the electric drive of the pressure differential valve 19. The adjustment signal is also sent to the pressure holding pump 20 and the magnet valve for the inflow of fresh water. The electric control device 100 also sends a display signal to the operation panel of the control device. This signal allows the operator to know the operating status of the device.

The degassing operation is adjusted according to the time interval or the level of the degassing expansion tank 9. It is run at least four times per hour to keep the pipeline water degassed. If the device is newly operated with the first or replaced medium, the electric control device 100 can be manually changed to a program that allows degassing operation to occur quickly. For example, the pressure holding pump 20 operates 10 times per hour.

Degassing reduces the amount of oxygen in the liquid medium from 0.045 to 0.080 mg / liter. In general, it is desirable that the amount of oxygen in the boiler unit be less than 0.1 mg / liter. This degassing device is significantly less than the recommended limit. In addition, all gases such as H₂ and N₂ disappear. Because carbon dioxide is also removed when the gas is removed, the amount of acid in the liquid medium is reduced. It is controlled by the alkaline quality of the heating water. The pH-value ranges from 8.5 to 9.0 and the amount of expansion of the device is significantly less than its volume. This saves energy and maximizes the effectiveness of the boiler system.

The compact control device 25 installs the regulators in the box 23. On the front of the box are electronic control elements and indicators. The pipe is connected to the side and the pipe is connected as follows.

-Suction line 15 of the circulation line; The circulating branch diverges from the circulating tube in the heating and cooling circulation system.

The outlet tube 16 of the circulation tube; The retrograde tube leads to the retrograde tube of the heating and cooling circulation system, or the retrograde tube, which is an expansion tube, ends in an area irrelevant to the pressure of the heating and cooling circulation system.

-Independent expansion tube of HVAC system 17

-Drain pipe of safety flooding device 5

-Connection of Supplements 1

In air-conditioning systems, expansion tube (17) must be installed. In a small apparatus, the suction pipe 15 and the outflow pipe 16 which are circulation pipes are enough. If the circulation pipe accurately sets the static pressure on the pressure differential valve 19 in the heating and cooling circulation system, the circulation pipe can be used as an expansion pipe.

According to the present invention as described above, the dissolved oxygen, hydrogen gas, carbon dioxide gas, etc. contained in the inside of the heating and cooling pipes are very effectively removed, thereby suppressing the corrosion and scale of the pipes generated by the gas, thereby extending the service life of the pipe. It is an excellent invention that can reduce the expansion investment and operating costs by the effect of improving water circulation caused by water expansion.

Claims (4)

The degassing expansion tank (9) (9) and (9) and the circulation pipe of the outflow pipe (16) provided with the permanent magnets (24) are installed so that the tank wall can be disassembled and assembled. The air-conditioning circulation system (1.A5) connected to the expansion pipe (17), the gas removal device (1.A4) to which the hydraulic pressure sensor and the pressure sensing sensor for measuring the operating pressure of the expansion pipe are connected, Compact control device (25) consisting of an electric control device (100) receiving a measurement signal, a degassing chamber (1a) consisting of a supplemental water storage chamber and a flooding chamber, and a vacuum crusher (3) for controlling the pressure of the degassing expansion tank (9). ) Is a degassing device of the heating and cooling piping connected to the ground plate 27 of the assembly area (26). (delete) 2. The gas removing device of a heating and cooling pipe according to claim 1, wherein the compact control device (25) is provided with a safety flooding device which shows the operating pressure in the expansion pipe and the reduced pressure gap in the gas removal expansion tank (9). The degassing apparatus according to claim 1, wherein the degassing expansion tank (9) is equipped with a water level measuring glass (1.18) having a low water level switch, and the low water level switch is disposed on a limestone settling area close to the ground of the tank. .