JP3094582U - Check valve with silencer cover - Google Patents

Abstract

(57) [Problem] To generate noise caused by pulsation due to compression of refrigerant with respect to a compressor, and because the valve plate does not fall down when stopping, the reverse flow of high-pressure refrigerant cannot be blocked. A non-return valve is provided to reduce noise and stabilize the flow direction of the refrigerant into the high pressure chamber. The check valve mainly comprises a valve stem 2 and a valve stem cover 3. A valve stem hole 31 is provided in the cover 3 for inserting the valve stem 2, and a high pressure chamber is provided in the cover body 3. A pressure guide hole 311 communicating with the valve stem hole 31 is provided, and a refrigerant leakage guide tank 3 is provided between side surfaces of the valve stem cover 3 and the isolation sheet 1.
2, the valve stem 2 is directly pushed into the ventilation hole 11 of the isolation sheet 1 by the pressure of the high pressure chamber, and has a non-return action of blocking the high pressure refrigerant from flowing back to the low pressure chamber.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

The non-return valve with sound deadening cover of the present invention is based on the compression of the refrigerant against the compressor. The noise generated from the pulsation and the valve plate does not fall securely when stopped. The noise generated by not blocking the reverse flow of high pressure refrigerant with The present invention relates to a check valve for stabilizing the flow direction of a medium to a high pressure chamber.

[0002]

[Prior art]

FIG. 1 is a structural diagram of a general swirl compressor. Single compressor ( A) is a rotating swirl (A2), a fixed swirl (A1), an isolation sheet (B) and drive parts It is equipped with a basic structure consisting of, etc., of which the inside of the compressor (A) is isolated The low pressure chamber (R1) and the high pressure chamber (R2) are divided between the upper and lower closed chambers by the sheet (B) to reduce the low pressure. The refrigerant inlet (A3) and the refrigerant outlet (A) are respectively provided on one side of the chamber (R1) and the high pressure chamber (R2). 4) is provided, and at the same time, the swirl is fixed below the isolation sheet (B) on one side of the low pressure chamber (R1). (A1) and rotary swirl (A2) are provided, and the rotary swirl (A2) is used as a drive component (C). Inside the fixed swirl, it is idled so as not to rotate and rotate. This changes the volume space between the fixed swirl (A1) and the rotating swirl (A2), Change the volume of the refrigerant by sucking or compressing the refrigerant entering the low pressure chamber (R1) The high pressure refrigerant through the vent hole (B1) of the isolation sheet (B) from the refrigerant outlet (A4) The refrigerant flows into the refrigerant pipe, and the refrigerant is thermally circulated between the refrigerant pipe and the compressor.

[0003]

[Problems that the device is trying to solve]

Both sides of the isolation sheet (B) have a high pressure end and a low pressure end, respectively. When the rotation stops, the high pressure gas makes a reverse flow noise to the low pressure side, so the high pressure refrigerant Reverse the ventilation hole (B1) of the isolation sheet (B) to prevent rapid backflow to the pressure side. A stop valve (B2) must be provided. However, the check valve (B2) used before is, for example, a valve plate type The valve plate does not lower properly when the valve is closed, so the passage cannot be blocked. High pressure refrigerant Noise is generated by causing backflow. Alternatively, FIG. 2 illustrates another commercially available check valve. In order to prevent the high-pressure refrigerant from flowing back to the low-pressure side quickly, the isolation sheet (B) and The valve stem (E) is provided between the stem covers (D), and the lower edge of the valve stem (E) is separated. It directly contacts the end surface of the release sheet (B). However, when the rotating swirl (A2) and the fixed swirl (A1) rotate relative to each other, the refrigerant Since it is compressed and causes flow pulsation in the high pressure chamber (R2) and the check valve (B2) is not stable, It struck down and made a loud noise.

[0004] In addition, the check valve with sound deadening cover of the present invention is a valve stem and a valve stem cover. Is a non-return valve that has a cover on its cover for inserting the valve stem. A valve stem hole is provided, and the cover body is equipped with a pressure gage that connects the high pressure chamber and the valve stem hole. Guide holes, and a refrigerant leak on the sides of the valve stem cover and the isolation seat. Provide a guide tank for KU. If the rotating and fixed swirls rotate relative to each other, the high The pressurized refrigerant directly pushes up the valve stem, and the high pressure refrigerant passes through the guide tank. Flow into the high pressure chamber, but when the equipment stops, the pressure in the high pressure chamber causes the valve stem to move. Mainly designed to block the reverse flow of high pressure refrigerant to the low pressure chamber by pushing it into the ventilation hole of the isolation sheet. It is a purpose.

[0005] Another purpose of the non-return valve with sound deadening cover of the present invention is to surround the ventilation hole of the isolation sheet. The edge side is processed into an arc-shaped guide angle, and the end surface with the valve stem guides the refrigerant and is smooth. To reduce the noise caused by the impact of the refrigerant. Another purpose of the non-return valve with sound deadening cover of the present invention is to let the refrigerant flow through the guide tank. To release on average and stabilize the flow direction to the high pressure chamber. Another object of the improvement of the check valve structure for a compressor of the present invention is to The cover has a guide hole, and a large amount of high-pressure refrigerant flows into the high-pressure chamber through the guide tank. In addition to flowing through the guide hole to the high pressure chamber, release the high pressure refrigerant faster. Is.

[0006]

[Means for Solving the Problems] The check valve of the present invention mainly consists of a valve stem and a valve stem cover. A valve stem hole is provided in the cover to insert the bustem, and the cover body is A pressure guide hole that connects the high pressure chamber and the valve stem hole is provided, and the valve stem cover is A guide tank for refrigerant leakage is installed between the sides of Press the valve stem directly into the ventilation hole of the isolation seat, and the high pressure refrigerant will It has a non-return effect that blocks the flow. Rotating swirl and fixed swirl rotate relative to each other If so, the high-pressure refrigerant expediently pushes the valve stem up, and the high-pressure refrigerant It flows through the guide tank to the high pressure chamber. Regarding the check valve with sound deadening cover of the present invention, the function of the check valve is that the refrigerant is compressed. The refrigerant flows in one direction from the low pressure chamber into the ventilation hole of the high pressure chamber on the isolation sheet of the lesser. It is a non-return action that controls the flow, and also ensures that the refrigerant is stored in the high pressure chamber. , A constant flow rate from the refrigerant outlet to the refrigerant pipe, Let the maturity cycle.

[0007]

[Embodiment of device]

As shown in FIGS. 3 and 4, the single-piece check valve of the present invention includes a valve stem (2) and a stem. It consists mainly of the isolation sheet (1) to which the mobile cover (3) is attached. Stem hippo in it -(3) has a valve stem hole (31) for inserting the valve stem (2), and The bar body has a pressure guide hole (31) that connects the high pressure chamber (R2) and the valve stem hole (31). 1) and the valve stem cover (3) and the isolation sheet (1) on their sides, refrigerant leaks. A guide tank will be provided. Isolate seat of valve stem (2) by pressure of high pressure chamber (R2) Directly press the ventilation hole (11) of (1) to block the reverse flow of the refrigerant to the low pressure chamber (R1). It On the contrary, when the rotary swirl and the fixed swirl rotate relatively, the high pressure refrigerant is The bustem (2) is directly pushed up and the high pressure refrigerant is lifted from the guide tank (32). Flow to the pressure chamber (R2). Or, an arc is formed on the peripheral side of the ventilation hole (11) of the isolation sheet (1). Shaped into a guide angle (12), and the end surface with the valve stem (2) guides the refrigerant and is a smooth On the way, and the refrigerant flows through the compressor to the high pressure chamber (R2) It reduces noise caused by vertical shock due to instability caused by pulsation generated in the Refrigerant is released to the average through the id tank (32), and the flow direction to the high pressure chamber (R2) is reduced. Can be set.

[0008] Also, the isolation sheet (1) has a ventilation hole (11) and a break on the surface of the isolation sheet (1). Install valve stem cover seat (13) for positioning stem cover (3) over Fix the single check valve, or install the guide tank (32) in the valve stem cover system. It can also be mounted directly on the wall of the valve (13) and the valve stem (2) is made of high pressure refrigerant. When pushed upwards, the refrigerant is placed on the wall of the valve stem cover seat (13). Guided from the circular arc guide angle (12), and then to the high pressure chamber (R2) through the guide tank (32). It flows smoothly. Alternatively, the valve stem may be provided with a vent hole (14) as shown in FIG. As the guide tank (32) does not receive a large amount of refrigerant, Is stably flowed into the high pressure chamber (R2). Alternatively, as shown in FIG. 6, the valve stem ( There is a storage tank (21) on the upper side of 2), in which elastic parts (4) are attached, and When the lub stem (2) is pushed up by a large amount of high pressure refrigerant, it is elastically moved by the elastic part (4). It is possible to buffer and reduce the noise caused by the impact between the valve stem (2) and the stem cover (3). It Of course, the fixed swirl may be used directly as the isolation sheet (1). Fixed swirl There is a vent hole (11) at the center of the valve, and the valve stem cover is on the outer peripheral side of the vent hole (11). There is a seat (13) to position the stem cover (3).

[0009]

[Effect of device]

The non-return valve with sound deadening cover of the present invention is a combination of valve stem and valve stem cover. The main structure of the isolation seat is Non-return block that shuts back flow of refrigerant to the low pressure chamber by directly pushing the system into the ventilation hole of the isolation sheet. Have an effect. High pressure refrigerant when the rotating and fixed swirls rotate with each other Directly pushes up the valve stem, and the high pressure refrigerant flows through the guide tank It flows into the pressure chamber, or the arc angle around the vent hole is combined with the guide tank to protect against the impact of the refrigerant. Noise can be effectively reduced, and the refrigerant can stabilize the flow direction to the high pressure chamber, Another checker valve structure of Lesser can be provided.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a typical swork compressor.

FIG. 2 is an external view of a check valve for an embodiment.

FIG. 3 is an external view of the check valve of the present invention.

FIG. 4 is a structural cross-sectional view of the check valve and isolation sheet of the present invention.

FIG. 5 is a top view of the valve stem cover of the present invention.

FIG. 6 is a structural cross-sectional view between a check valve and a separator sheet according to another embodiment of the present invention.

[Explanation of symbols]

(A) Compressor (A1) Fixed swirl (A2) Rotating swirl (B) Isolation seat (C) Drive part (D) Stem cover (E) Valve stem (R1) Low pressure chamber (B1) Vent hole (R2) High pressure chamber ( B2) Check valve (1) Isolation seat (11) Vent hole (3) Stem cover (12) Arc guide angle (31) Valve stem hole (13) Valve stem cover seat (311) Pressure guide hole (14) Vent hole (32) Guide tank (2) Valve stem (4) Elastic component (22) Storage tank

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[Procedure amendment]

[Submission date] January 30, 2003 (2003.1.3
0)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

Claims (6)

[Scope of utility model registration request] 1. A separating sheet of a compressor is provided with a vent hole through which a refrigerant flows from a low-pressure chamber to a high-pressure chamber, and has a function of allowing the refrigerant to flow in one direction to restrict a reverse flow of the refrigerant. From the outlet to the refrigerant pipe,
The refrigerant is thermally circulated between the refrigerant tube and the compressor. The non-return valve consists of a main body of an isolation sheet that fits the valve stem and the valve stem cover.The valve stem cover has a valve stem hole for inserting the valve stem, and the cover body has a high pressure chamber and a valve. A pressure guide hole that communicates the stem hole, and a refrigerant leak guide tank on the sides of the valve stem cover and the isolation sheet.The pressure in the high-pressure chamber pushes the valve stem directly into the ventilation hole of the isolation sheet, allowing high-pressure refrigerant to flow. It has the effect of blocking the reverse flow to the low-pressure chamber, and the peripheral edge of the ventilation hole of the isolation sheet is processed into an arc guide angle, the end surface with the valve stem guides the refrigerant and smoothly opens, and due to the impact of the refrigerant It reduces noise, so that when the fixed swirl and the rotating swirl rotate relative to each other, the high pressure refrigerant directly guides the valve stem by the guide of the arc guide angle. Raised, the high-pressure refrigerant return valve with silencer cover, characterized in that flowing through the high pressure chamber through the guide chamber. 2. The isolation seat is provided with a vent stem and a valve stem cover seat for positioning the stem cover at the breakover of the surface of the isolation seat, and the structure of a single check valve is fixed, and the guide tank is a valve. The check valve with a sound deadening cover according to claim 1, wherein the check valve is provided on a wall surface of the stem cover sheet. 3. The check valve with a sound deadening cover according to claim 1, wherein the valve stem cover is provided with a vent hole to cooperate with the guide tank to release the high pressure refrigerant into the high pressure chamber. 4. A valve is provided on the upper side of the valve stem, and an elastic component is attached to the container. The valve stem receives a large amount of high-pressure refrigerant and can be buffered by the elastic component when pushed up. The check valve with a sound deadening cover according to claim 1, wherein the service life of the stem can be increased. 5. The check valve with a sound deadening cover according to claim 4, wherein the elastic component may be a spring. 6. The fixed swirl is directly used as an isolation sheet, the fixed swirl has a vent hole at the center thereof, and a valve stem cover sheet is provided on the outer peripheral side of the vent hole to cover the stem cover. The check valve with a sound deadening cover according to claim 1.