TWI585301B - Intake valve for compressor - Google Patents

Description

Compressor intake valve structure

The present invention relates to an intake valve structure, and more particularly to an intake valve structure for a compressor.

The compressor is an important core in the whole refrigeration system. After inhaling the low-temperature and low-pressure refrigerant gas, the motor is driven by the motor to compress the gas, and then the high-temperature and high-pressure gas is discharged to provide power to the refrigeration circuit to complete the compression, condensation and expansion. , evaporation and other circuits.

A typical gas compressor must be restarted when the compressed gas is insufficient. At the start of the compressor, the compressor will simultaneously compress the gas to start the load, which will increase the load on the motor. Therefore, it is a technical problem to be solved by the present invention to provide a compressor that can effectively restrict fluid from entering the interior of the compressor and achieve low load starting at the moment of starting.

SUMMARY OF THE INVENTION One object of the present invention is to provide an intake valve structure for a compressor that causes a valve and a valve seat to be tightly closed at the moment of startup of the compressor, effectively restricting fluid from entering the interior of the compressor to achieve low load starting.

In order to achieve the above object, the present invention provides an intake valve structure of a compressor, including an intake valve body and a flow control mechanism, the intake valve The body has a hollow cavity, a gas supply tank communicating with the hollow cavity, and an air outlet passage connecting the air supply tank, and a valve seat is formed between the air supply tank and the air outlet passage; the flow control The mechanism comprises a cylinder, a valve stem, a valve and an elastic component, the cylinder is mounted on the air supply tank, the valve stem is movably connected to the cylinder, and the valve is fixed at the end of the valve stem The elastic member is elastically clamped between the cylinder and the valve, wherein the valve is operatively opened and closed corresponding to the valve seat and is located on the side of the air supply pocket.

The invention also has the following effects, which can simplify the assembly and installation of the overall structure by the modular arrangement of the flow control mechanism. The tilt design of the flow control mechanism not only effectively reduces the volume of the intake valve body, but also facilitates the smooth flow of internal fluid. The valve is driven by the pre-pressure of the elastic member, and the valve and the valve seat can be tightly closed when there is no power supply such as oil pressure.

By opening the through hole in the valve, it is possible to avoid the negative pressure of the outlet passage to prevent the valve from opening easily.

1‧‧‧Intake valve structure

10‧‧‧Intake valve body

11‧‧‧ transverse tube

111‧‧‧ hollow cavity

12‧‧‧ oblique tube

121‧‧‧Air supply tank

13‧‧‧ longitudinal tube

131‧‧‧Exhaust passage

14‧‧‧ valve seat

141‧‧‧ valve hole

142‧‧‧ receiving surface

20‧‧‧Flow Control Agency

21‧‧‧Cylinder

211‧‧‧Piston room

212‧‧‧Valve hole

213‧‧‧ Infusion hole

22‧‧‧ valve stem

221‧‧‧ vents

23‧‧‧ Valve

231‧‧‧ affixing surface

232‧‧‧through hole

24‧‧‧Flexible components

25‧‧‧Piston

26‧‧‧ Cover

261‧‧‧Window

27‧‧‧ Sealing components

271‧‧‧Seal ring

272‧‧‧ pressure plate

273‧‧‧ buckle

30‧‧‧Filter

5‧‧‧Compressor

51‧‧‧Ontology

52‧‧‧Inlet passage

53‧‧‧Spiral rotor

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing the combined structure of an intake valve of the present invention.

Figure 2 is a cross-sectional view showing the structure of the intake valve of the present invention.

Figure 3 is a sectional view showing the combination of the intake valve structure and the compressor of the present invention.

Figure 4 is a cross-sectional view showing the state of use of the intake valve structure and the compressor of the present invention.

The detailed description and technical content of the present invention are described in conjunction with the drawings. The drawings are to be considered as illustrative and not restrictive.

Referring to FIG. 1 and FIG. 2, the present invention provides an intake valve structure of a compressor. The intake valve structure 1 mainly includes an intake valve body 10 and a flow control mechanism 20.

The intake valve body 10 is mainly composed of a transverse pipe 11, an oblique pipe 12 connecting the transverse pipe 11, and a longitudinal pipe 13 connecting the transverse pipe 11 and the oblique pipe 12, wherein the transverse pipe 11 passes through the conveying pipe and the evaporator Connected (not shown), the longitudinal tube 13 is connected to the compressor 5 (see Fig. 3), has a hollow cavity 111 inside the lateral tube 11, and has a connection with the hollow cavity 111 inside the oblique tube 12. The air volume groove 121 has an air outlet passage 131 communicating with the air supply receiving groove 121 inside the longitudinal tube 13, and a valve seat 14 is formed between the air supply receiving groove 121 and the air outlet passage 131, and is opened in the middle of the valve seat 14. A circular valve hole 141 is provided which communicates with the air supply groove 121 and the air outlet passage 131, and a receiving surface 142 is formed on the outer circumference of the valve hole 141 and on the side facing the air supply groove 121.

Further, the inner angle of the axial line of the oblique tube 12 and the axial line of the longitudinal tube 13 are between 40 and 50 degrees, and the inner angle is preferably 45 degrees, which is not only The overall volume of the intake valve body 10 is effectively reduced, and the operation of the flow control mechanism 20 does not interfere with the flow of the internal fluid, thereby facilitating the smooth flow of the fluid. When the inner angle is greater than 50 degrees, the volume of the intake valve body 10 will be increased; when the inner angle is less than 40 degrees, the flow of the fluid will be formed.

The flow control mechanism 20 is mounted corresponding to the air supply groove 121 of the oblique tube 12, and mainly includes a cylinder 21, a valve stem 22, a valve 23, an elastic member 24, a piston 25 and a cover 26. The cylinder block 21 is a stepped cylindrical body which is fixed to the inclined tube 12 through a screwing member such as a screw and extends into the interior of the air supply receiving groove 121, and has a piston chamber 211 at a central upper portion of the cylinder block 21, The lower portion has a valve stem hole 212 communicating with the piston chamber 211, and an infusion hole 213 communicating with the piston chamber 211 is opened at a side of the cylinder body 21 exposing the oblique tube 12 for providing a hydraulic oil through the infusion hole 213. Entering the piston chamber 211, the piston 25 and the valve stem 22 are driven to move axially together.

The valve rod 22 is movably inserted into the valve stem hole 212 of the cylinder block 21, and a sealing assembly 27 is disposed at a lower end position of the valve stem hole 212. The sealing assembly 27 includes a sleeve that is sleeved on the outer diameter of the valve stem 22. A sealing ring 271, a pressing plate 272 for fixing the sealing ring 271, and a buckle 273 for locking the displacement of the pressing plate 272 in the cylinder block 21, wherein the sealing ring 271 can be made of Teflon material. In addition, a vent hole 221 is defined in the center of the valve stem 22 for communicating the piston chamber 211 and the air outlet passage 131 so as not to form a pressure difference therebetween, and the opening function of the valve 23 can be smoothly achieved.

The valve 23 is a circular disk that is sleeved at the bottom end of the valve stem 22 and is locked by a fixing member such as a nut and a pin. The valve 23 is located on the side of the air supply groove 121 and is formed at the bottom thereof. There is a contact surface 231 that is operatively associated with the receiving surface 142 of the valve seat 14 for sealing. In addition, a through hole 232 is formed in the valve 23 for connecting the air supply groove 121 and the air outlet channel 131. The diameter of the through hole 232 is between 5 mm and 20 mm, so that the negative pressure of the air outlet channel 131 can be avoided. This makes it difficult for the valve 23 to open easily.

The elastic member 24 of the present embodiment is a coil spring, and one end of the lower end of the cylinder body 21 is sleeved and fixed at the lower end of the valve body 23, and is elastically clamped between the cylinder block 21 and the valve 23. The piston 25 is housed in the piston chamber 211 and is in close contact with the inner wall of the piston chamber 211 through the seal ring. The center of the piston 25 is sleeved at the top end of the valve stem 22 and is locked by a fixing member such as a nut. The cover body 26 is fixed to the cylinder block 21 by a screw member such as a screw and corresponds to the piston chamber 211, and a window 261 is provided at an intermediate position of the cover body 26 for checking the position of the piston 25 in the piston chamber 211.

Further, the intake valve structure 1 of the present invention further includes a filter 30 housed in the hollow cavity 111 of the transverse pipe 11 to filter the fluid flowing in from the evaporator.

Referring to FIG. 3 and FIG. 4, the intake valve structure 1 of the present invention is mountable on a compressor 5. The compressor 5 has a body 51, and an air inlet passage 52 is formed inside the body 51. The two spiral rotors 53 are provided. In combination, the longitudinal tubes 13 of the intake valve structure 1 are fixed to the body 51 through screwing elements such as screws, and the air outlet passages 131 and the air inlet passages 52 are communicated correspondingly.

When the motor of the compressor 5 is started in use, the spiral rotor 53 is rotated and inhaled, since the valve 23 is blocked by the valve seat 14, and the abutting surface 231 of the valve 23 and the receiving surface 142 of the valve seat 14 are mutually The closure is closed, which in turn effectively limits the amount of fluid suction of the compressor 5 so that the compressor 5 can smoothly start the motor with a minimum starting current.

In summary, the intake valve structure of the compressor of the present invention can achieve the intended use purpose, and solves the lack of conventional knowledge, and is extremely novel and progressive, fully conforms to the requirements of the invention patent application, and converts the patent. If the law is filed, please check and grant the patent in this case to protect the rights of the inventor.

1‧‧‧Intake valve structure

10‧‧‧Intake valve body

11‧‧‧ transverse tube

111‧‧‧ hollow cavity

12‧‧‧ oblique tube

121‧‧‧Air supply tank

13‧‧‧ longitudinal tube

131‧‧‧Exhaust passage

14‧‧‧ valve seat

141‧‧‧ valve hole

142‧‧‧ receiving surface

20‧‧‧Flow Control Agency

21‧‧‧Cylinder

211‧‧‧Piston room

212‧‧‧Valve hole

213‧‧‧ Infusion hole

22‧‧‧ valve stem

221‧‧‧ vents

23‧‧‧ Valve

231‧‧‧ affixing surface

232‧‧‧through hole

24‧‧‧Flexible components

25‧‧‧Piston

26‧‧‧ Cover

261‧‧‧Window

27‧‧‧ Sealing components

271‧‧‧Seal ring

272‧‧‧ pressure plate

273‧‧‧ buckle

30‧‧‧Filter

Claims (11)

An intake valve structure of a compressor includes: an intake valve body having a hollow cavity, an air supply port communicating with the hollow cavity, and an air outlet passage connecting the air supply tank, wherein the air supply is provided a valve seat is formed between the cavity and the air outlet passage; and a flow control mechanism includes a cylinder, a valve stem, a valve and an elastic component, the cylinder is mounted on the air supply tank, and the valve stem can be Momentally penetrating the cylinder, the valve is fixed at an end of the valve stem, the elastic element is elastically clamped between the cylinder and the valve, wherein the valve is operatively opened and closed corresponding to the valve seat and Positioned on the side of the air supply tank; wherein the intake valve body comprises a transverse tube, an oblique tube connecting the horizontal tube, and a longitudinal tube connecting the horizontal tube and the oblique tube, the hollow cavity is formed at Inside the lateral tube, the air supply pocket is formed inside the oblique tube, and the outlet passage is formed inside the longitudinal tube. The intake valve structure of the compressor of claim 1, wherein the axial line of the oblique tube and the axial line of the longitudinal tube are disposed at an internal angle of between 40 and 50 degrees. The intake valve structure of the compressor of claim 2, wherein the inner angle is 45 degrees. The intake valve structure of the compressor of claim 1, wherein the valve seat is provided with a valve hole communicating with the air supply receiving groove and the air outlet passage, at an outer circumference of the valve hole and facing the air supply receiving groove A receiving surface is formed on one side, and the valve has a bonding surface that is closely attached to the receiving surface. The intake valve structure of the compressor of claim 1, wherein the valve is provided with a through hole communicating with the air supply receiving groove and the air outlet passage. The intake valve structure of the compressor of claim 5, wherein the through hole has an aperture Between 5mm and 20mm. The intake valve structure of the compressor of claim 1, wherein the flow control mechanism further comprises a piston having a piston chamber and a valve stem hole communicating with the piston chamber, the valve stem penetrating the valve In the rod hole, the piston is accommodated in the piston chamber and fixed to the valve stem, and the cylinder body is provided with an infusion hole communicating with the piston chamber, and the piston is driven to move through a liquid through the liquid infusion hole. The intake valve structure of the compressor of claim 7, wherein the flow control mechanism further comprises a cover body, the cover body corresponding to the piston chamber being fixed to the cylinder block, wherein the cover body is provided with a window. The intake valve structure of the compressor of claim 8, wherein the flow control mechanism further comprises a sealing assembly, the sealing assembly comprising a sealing ring sleeved on the valve stem, a pressure plate and a card for fixing the sealing ring A ring that is placed in the cylinder to limit displacement of the pressure plate. The intake valve structure of the compressor of claim 7, wherein the valve stem is provided with a venting opening communicating the piston chamber and the outlet passage. The intake valve structure of the compressor of claim 1, further comprising a filter housed inside the hollow cavity.