KR20000044717A - Airtight sonic compressor - Google Patents

Abstract

PURPOSE: An airtight sonic compressor is provided to increase the life span of the compressor and reduce noise by covering the outside of a driver and a resonator with a shell and by cooling the driver with coolant of the shell. CONSTITUTION: Anode and cathode are fed to a coil(12) in turns. A resonator(21) vibrates forward and rearward by repulsive force between the coil and a permanent magnet. Inside the resonator, wave caused by coolant impact is generated. Both ends of the resonator repeat to generate high pressure and low pressure by sound pressure. A coolant is sucked through a suction pipe(24) when pressure of the resonator is less than pressure of an evaporator and the coolant is vented through a vent pipe(25) if pressure of the resonator is more than pressure of the evaporator. A shell(31) seals a driver(11) and the resonator from the outside in order to reduce noise.

Description

An enclosed sonic compressor

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sonic compressor. Specifically, the compression-expansion process of a refrigerant is repeated according to a change in the sound pressure caused by the resonance phenomenon inside the resonator by exciting the resonator externally by a linear reciprocating actuator. It relates to a hermetic sonic compressor configured to enclose the outside of the sonic compressor in a shell to cool the actuator by the refrigerant and reduce noise.

In general, a compressor is used to reciprocate a cylinder and a piston, or by rotating a number of small vanes or asymmetrical rotors, such as a turbomachine, so that the pressure at the outlet exits from the pressure at the inlet. Collectively to raise the machine.

Such a compressor is an essential device for refrigeration-refrigeration such as an air conditioner or a refrigerator among household appliances that are used not only in the industrial field but also in daily life.

For example, in the case of the refrigerator, the refrigerant gas is compressed by reciprocating the piston, and then condensed and expanded so that the refrigerant is vaporized to lower the temperature inside the refrigerator by using the principle of taking away the heat of the surroundings, and the air conditioner uses the same principle. By lowering the temperature of the room lower than the outside.

Freon-based gas has been used as a refrigerant for these products.However, a number of research cases have been announced that Freon is a major factor causing various environmental problems by destroying the ozone layer in the global stratosphere. In the international environmental conventions, the amount of usage is gradually reduced in the future, and it is decided not to use it before long.

As a result, home electronics companies that produce these products, both domestically and globally, face the challenge of developing new refrigerants as soon as possible, and are focusing on developing more efficient compressors.

Freon series, which is a conventional refrigerant, not only has good characteristics as a refrigerant, but also has a lubricating property, and thus, has an additional great advantage of preventing wear at the contact surface between dynamic driving factors. However, if the alternative refrigerant does not have such lubrication characteristics, it is difficult to use lubricating oil separately in contact parts.

If the lubricating oil is not used, there is a problem that the wear of the components occurs quickly due to severe friction between the contact surfaces and the compression efficiency is considerably lowered due to energy loss.

However, there is also a problem when using lubricating oil, because when the operation of the compressor is mixed with the lubricating oil and the refrigerant, the cooling efficiency is reduced if the chemical reaction between the refrigerant and the lubricant occurs. Therefore, in order to use the existing compression method as it is, the new refrigerant should have good lubrication characteristics and environmentally friendly characteristics as in Freon. However, it is difficult to develop a refrigerant having such characteristics in a short time, and therefore, it is necessary to conduct research in the direction of improving the compression method from another aspect.

One of them is a sonic compressor. Sonic compressors apply the principle of high pressure when resonance occurs inside a closed resonator. In other words, the entire resonator is externally excited so that the sound pressure is greatly amplified at the resonant frequency to repeat the compression-expansion process of the refrigerant.

When compressing the refrigerant in this way, unlike conventional compressors, the contact between the dynamic components disappears, eliminating the need for lubricating oil, and the number of components constituting the compressor can be considerably reduced.

3 and 4 are diagrams for explaining the principle of the sonic compressor, in which the refrigerant gas is compressed by standing waves generated in the resonator 21 when the resonator of any shape is vibrated from side to side by the driver.

That is, when the refrigerant collides with both ends A and B in the resonator 21 which performs the linear reciprocating motion, waves are generated and the generated waves travel in the opposite direction in the resonator 21 as shown in FIG. Similarly, standing waves with different pressure distributions occur.

Here, it is difficult to perform the role of the compressor as the energy imparted by the fluid simply by the linear motion of the resonator 21, and the pressure required by applying a negative pressure to the resonance by designing the resonance by the standing wave in the resonator 21 to occur. You can get energy. At this time, an antinode having an amplitude of the sum of the two wave pressures is generated in A and B inside the resonator 21, and a node having an offset amplitude of the pressure is generated in the center.

When the antinode pressure is high and low, the suction and discharge valves are installed on the antinode. When the antinode pressure is lower than the evaporation pressure, the refrigerant is sucked up and the refrigerant pressure is higher than the condensation pressure. To discharge.

5 is a configuration diagram of a conventional Sonic compressor, in which a conventional Sonic compressor includes a drive unit 10 including a coil 12 and a driver 11 of a magnet 13, a resonator 21, a suction valve, and a discharge valve ( 22, 23, suction and discharge pipes 24 and 25, a spring 26, and a resonator 20 composed of a resonator support 27.

The drive unit 10 is a linear reciprocating motion of 300 ~ 400Hz by the driver 11 composed of a magnet 13 wrapped around the coil 12 to give a linear motion to the resonator (21).

The resonator cavity 21 receives a linear motion from the driver 11 to generate a standing wave while vibrating back and forth with an amplitude of about 50 μm, thereby compressing the refrigerant using sound pressure caused by resonance.

The resonator support 27 is for supporting the resonator.

The spring 26 is installed between the drive unit 10 and the resonance unit 20 to store the inertial force of the resonator 21.

The suction and discharge valves 22 and 23 are installed at one end of the resonator 21 and constitute a check valve to suck and discharge the refrigerant through the suction and discharge tubes 24 and 25. To adjust.

However, in the sonic compressor having such a configuration, since the driving unit 10 and the resonance unit 20 are exposed to the outside, there is a serious noise disadvantage. In particular, the generation of excessive heat due to the operation of the driving unit 11 as a separate cooling device. There was a problem to cool.

On the other hand, according to US Patent No. 5,515,684 (May 14, 1996), which is presented as a sonic compressor, as shown in Fig. 6, the resonator 50 is composed of a condenser 70, a capillary tube 71, and an evaporator 40. Located in a closed circuit, this arrangement constitutes a typical compression-evaporation system and can be used for refrigeration, air cooling, heat pumps or other heat exchangers.

In operation, the compressed liquid refrigerant flows through the capillary tube 71 (pressure reducing device) to the evaporator 40 and undergoes a pressure drop therein. The low pressure liquid refrigerant absorbs the heat of evaporation from the refrigerating space 60 Increases. The standing wave compressor maintains a low suction pressure and is drawn into the evaporator 40 and enters the standing wave resonator 50 through the check valve 53 through the suction pipe 51, and the low-pressure steam refrigerant is sounded in the resonator 50. Compression is performed by the high pressure and high pressure discharged to the condenser 70 through the check valve 54 and the discharge pipe (52). As the high-pressure steam-type refrigerant passes through the condenser 70, heat is released and compressed again to condense, and this compressed liquid refrigerant then flows through the capillary tube 71 to repeat the thermodynamic cycle.

However, in the conventional method as described above, the structure is complicated by adopting an open structure of the resonator, in particular, due to the increase in noise caused by the open type resonator and the excessive heat generated from the driver, the durability is inferior and a separate for cooling the driver. There was a problem such as the need to install a cooling device.

The present invention is to solve the above-mentioned conventional problems, it is configured to surround the outside of the actuator and the resonator with a shell and to cool the heat of the driver with the refrigerant inside the shell to increase the life of the compressor and to reduce noise Its purpose is to provide a hermetic sonic compressor.

In order to achieve the above object, the present invention provides a sonic compressor using sound, comprising a driver composed of a permanent magnet and a coil, and compressing the refrigerant using a negative pressure caused by resonance by an external vibration caused by the driver. A low pressure type comprising a resonator in which an intake valve for selecting a supply and an outlet tube extending outwardly are directly connected to the discharge valve, and a shell formed on an outer circumference so as to seal the actuator and the resonator; A driver composed of a permanent magnet and a coil, a discharge valve for compressing the refrigerant by using negative pressure caused by resonance due to the outward vibration of the driver, and selecting a supply of the refrigerant to one end, and an inlet tube extending outside are directly connected to the suction valve. It is achieved by providing a high-pressure type sonic compressor composed of a resonator, a shell formed with an outer circumference so as to seal the driver and the resonator, and a discharge tube formed outside.

1 is a block diagram of a low-pressure type sonic compressor of the present invention

2 is another embodiment of the high-pressure type sonic compressor of the present invention

3 is a waveform generation state diagram inside a resonator of a sonic compressor;

4 is a waveform diagram of a standing wave generated in a resonator;

5 is a configuration diagram of a conventional sonic compressor

6 is a configuration diagram of a previously presented sonic compressor

Explanation of symbols for the main parts of the drawings

10: drive unit 11: driver

12 coil 13 magnet

20: resonance 21: resonator

22: suction valve 23: discharge valve

24: suction pipe 25: discharge pipe

31: shell

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

1 is a configuration diagram of the low-pressure type sonic compressor of the present invention. As shown, the sonic compressor of the present invention includes a driver 11, a resonator 21, and a shell 31. As shown in FIG.

The driver 11 is composed of a permanent magnet 13 and the coil 12 for generating a magnetic force in the permanent magnet 13 to perform a linear reciprocating motion.

The resonator 21 is provided with valves 22 and 23 for suctioning and discharging the refrigerant to one end thereof, and the discharge valve 23 is configured to directly pass through the discharge pipe 25.

The shell 31 is formed to the outside to seal the actuator 11 and the resonator 21, the suction pipe 24 penetrated to the outside is formed on one side. The inside of the shell 31 cools the driver 11 while the low temperature refrigerant introduced into the shell 31 from the outside through the suction pipe 24 comes into contact with the driver 11.

2 is a block diagram of the high-pressure type sonic compressor of the present invention. As shown in the figure, the high-pressure type sonic compressor is composed of the same actuator 11, resonator 21, and shell 31 as the low-pressure type.

The driver 11 is composed of a permanent magnet 13 and the coil 12 for generating a magnetic force in the permanent magnet 13 to perform a linear reciprocating motion.

The resonator 21 is provided with valves 22 and 23 for suctioning and discharging the refrigerant to one end and the suction pipe 24 is directly connected to the suction 22 to penetrate to the outside.

The shell 31 is formed to the outside to seal the driver 11 and the resonator 21, the discharge pipe 25 penetrated to the outside is formed on one side. Inside the shell 31, the refrigerant discharged through the discharge valve 23 of the resonator 21 remains inside the shell 31 before being discharged to the outside through the discharge tube 25, and this refrigerant is driven by the driver. The driver 11 is cooled while being in contact with 11.

According to the hermetic sonic compressor of the present invention as described above, when the positive and negative electrodes are repeatedly applied to the coil 12 from a power source (not shown), the repulsive force between the coil 12 and the permanent magnet 13 is reduced. As a result, each resonator 21 vibrates back and forth, and at this time, waves are generated inside the resonator 21 due to the collision of the refrigerant.

Therefore, by applying energy due to negative pressure to the refrigerant, both ends of the resonator 21 repeat the high and low pressure due to the negative pressure. At this time, when the pressure of the resonator 21 is lower than the evaporator pressure through the suction and discharge valves 22 and 23 installed at the end of the resonator 21, the refrigerant is sucked through the suction tube 24, and the resonator 21 When the pressure is higher than the condenser pressure, the process of discharging through the discharge tube 25 is repeated.

In the present invention, since the shell 31 seals the actuator 11 and the resonator 21 from the outside, the noise is reduced, and the low pressure type and the high pressure type have different configurations and the operating principle is the same.

That is, the suction and discharge of the refrigerant is circulated through the above-described suction and discharge process, but in the case of the low pressure type, the refrigerant introduced into the shell 31 through the suction pipe 24 is formed of the shell 31. After being introduced into the inside of the resonator 21 by the selection of the suction valve 22 is compressed by the negative pressure. At this time, the refrigerant introduced into the shell 31 is in contact with the driver 11 to cool the driver 11.

In addition, in the high pressure type shown in another embodiment of the present invention, the refrigerant compressed by the resonator 21 and discharged into the shell 31 through the discharge valve 23 is discharged into the shell 31 through the discharge pipe 25. The driver 11 is cooled while being in contact with the driver 11 before exiting to the outside.

As described above, the hermetic sonic compressor of the present invention has no wear generation area as compared with the conventional compressor, so that lubrication is unnecessary, maximization of durability is possible, and there is less effect of using refrigerant.

In addition, capacity control may be possible according to load variation without a separate capacity control device than a conventional compressor.

In addition, by configuring the compressor in a hermetic type, the noise is reduced, as well as the driver is cooled by a circulating refrigerant, thereby having a side effect of not requiring a separate cooling device.

Claims (2)

In a sonic compressor using sound, a compressor 11 consisting of a permanent magnet 13 and a coil 12 and a sound pressure caused by resonance are compressed to the outside by the driver 11, and the refrigerant is compressed to one end. A suction valve 22 for selecting a supply of refrigerant and a discharge tube 25 extending outwardly surround the resonator 21 directly connected to the discharge valve 23, and seal the actuator 11 and the resonator 21. Low pressure sealed sonic compressor, characterized in that consisting of a shell 31 formed with a suction pipe (24) to the outside. In a sonic compressor using sound, a compressor 11 consisting of a permanent magnet 13 and a coil 12 and a sound pressure caused by resonance are compressed to the outside by the driver 11, and the refrigerant is compressed to one end. The discharge valve 23 for selecting the supply of the refrigerant and the suction pipe 24 extending to the outside are sealed to the resonator 21 directly connected to the suction valve 22, and to seal the actuator 11 and the resonator 21. High pressure sealed type sonic compressor, characterized in that consisting of a shell 31, the discharge pipe 25 is formed to the outside.