A filter mechanism for a compressor exhaust pressure relief valve

Abstract

The present invention discloses a filter mechanism for a compressor exhaust pressure relief valve, comprising: an exhaust high-pressure chamber, a pressure relief buffer chamber, a static scroll, and a pressure relief valve, wherein the exhaust high-pressure chamber and the pressure relief buffer chamber are connected via a capillary flow channel; a static scroll exhaust device is provided on the static scroll, and the static scroll exhaust device is connected to the exhaust high-pressure chamber; one end of the pressure relief valve is connected to the pressure relief buffer chamber, and the other end of the pressure relief valve is connected to the external space; wherein the ratio of the volume of the pressure relief buffer chamber to the volume of the exhaust high-pressure chamber is not less than 0.01; and the ratio of the cross-sectional area of ​​the capillary flow channel to the cross-sectional area of ​​the static scroll exhaust device of the static scroll is not greater than 0.2. By providing an exhaust pressure filter mechanism before the pressure relief valve, the present invention prevents malfunction of the pressure relief valve, thereby effectively reducing the loss of refrigerant and lubricating oil in the air conditioning system, helping to maintain the normal working environment of the compressor and improving operational reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of compressor exhaust pressure relief valves, and in particular to a filtering mechanism of a compressor exhaust pressure relief valve. Background Art

[0002] When the compressor is operating, the pressure relief valve is triggered when the exhaust pressure exceeds the allowable upper limit to avoid safety issues caused by abnormally high exhaust pressure. Exhaust pressure pulsations are generated during the refrigerant compression process. Due to the incompressibility of the liquid, the exhaust pulsation amplitude is greater when the liquid refrigerant is compressed, and it is easy for the pulsation peak to exceed the operating pressure of the pressure relief valve and trigger the pressure relief valve to operate. However, the effective value of the exhaust pressure at this time does not reach the operating pressure of the pressure relief valve, and the high pulsation peak only occurs at the moment of liquid compression. The normal pressure of gas compression will be restored after the compressor runs for a while. Therefore, the operation of the pressure relief valve at this time is considered to be a false operation and should be avoided.

[0003] At present, the upper limit of the exhaust pressure allowed by the compressor is lower than the lower limit of the pressure relief valve action pressure, and a certain margin is left between the two to avoid malfunction of the pressure relief valve caused by exhaust pulsation.

[0004] Especially when liquid refrigerant is compressed, the instantaneous pressure pulsation peak is relatively large, which may trigger the malfunction of the pressure relief valve. When the volume of the compressor discharge chamber is relatively small, the malfunction of the pressure relief valve is more likely to be triggered. Summary of the Invention

[0005] In view of this, an object of the present invention is to provide a filtering mechanism for a compressor exhaust pressure relief valve.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A filter mechanism for a compressor exhaust pressure relief valve, comprising:

[0008] an exhaust high-pressure chamber and a pressure relief buffer chamber, wherein the exhaust high-pressure chamber and the pressure relief buffer chamber are connected through a capillary flow channel;

[0009] A static vortex, wherein the static vortex is provided with a static vortex exhaust device, and the static vortex exhaust device is connected to the exhaust high-pressure chamber;

[0010] a pressure relief valve, one end of which is in communication with the pressure relief buffer chamber, and the other end of which is in communication with the external space;

[0011] Wherein, the ratio of the volume of the pressure relief buffer chamber to the volume of the exhaust high-pressure chamber is not less than 0.01; the ratio of the cross-sectional area of ​​the capillary flow channel to the cross-sectional area of ​​the static vortex exhaust device of the static vortex is not greater than 0.2.

[0012] The filtering mechanism of the above-mentioned compressor exhaust pressure relief valve further includes: a top shell, the top shell and the static scroll together form an accommodating space, the exhaust high-pressure chamber and the pressure relief buffer chamber are both arranged in the accommodating space, the static scroll is a cover-like structure, the top shell is installed on the static scroll, and the pressure relief valve is arranged on the top shell.

[0013] The filtering mechanism of the compressor exhaust pressure relief valve mentioned above further includes: a partition, which is arranged in the shell, the side of the partition is connected to the inner surface of the shell, and the partition and a part of the shell together form a sealed oil pool.

[0014] The filtering mechanism of the above-mentioned compressor exhaust pressure relief valve further includes: an exhaust pipe, the exhaust pipe is arranged in the shell, one end of the exhaust pipe is connected to the exhaust high-pressure chamber, and the other end of the exhaust pipe is connected to the external space, and the exhaust high-pressure chamber is arranged on one side of the exhaust pipe.

[0015] The filter mechanism of the compressor exhaust pressure relief valve is characterized in that an angle is formed between the exhaust pipe and the capillary flow channel.

[0016] The filtering mechanism of the above-mentioned compressor exhaust pressure relief valve, wherein the static scroll exhaust device of the static scroll, the exhaust high-pressure chamber, the exhaust pipe and the external space are connected in sequence to form a first flow channel.

[0017] The filtering mechanism of the above-mentioned compressor exhaust pressure relief valve, wherein the static scroll exhaust device of the static scroll, the exhaust high-pressure chamber, the capillary flow channel, the pressure relief buffer chamber, the pressure relief valve and the external space are connected in sequence to form a second flow channel.

[0018] The filter mechanism of the above-mentioned compressor exhaust pressure relief valve, wherein the pressure relief buffer chamber is arranged on the other side of the exhaust pipe.

[0019] In the above-mentioned filter mechanism of the compressor exhaust pressure relief valve, the pressure relief buffer chamber is in the shape of a circular hole, and the pressure relief buffer chamber is opened on the top shell.

[0020] The filter mechanism of the compressor exhaust pressure relief valve mentioned above further includes: a first cavity, which is arranged on the other side of the exhaust pipe and is connected to the exhaust high-pressure cavity.

[0021] Due to the adoption of the above technology, the present invention has the following positive effects compared with the prior art:

[0022] (1) The present invention utilizes the existence of the capillary flow channel and the pressure relief buffer chamber to achieve a certain response delay. Since the pressure in the exhaust high-pressure chamber quickly returns to a normal level after reaching the peak, the pressure fluctuation inside the pressure relief buffer chamber is small and cannot reach the same peak pressure. At the same time, it also cannot reach the opening pressure of the pressure relief valve, thereby realizing the filtering function of the exhaust pressure relief valve.

[0023] (2) The present invention avoids malfunction of the pressure relief valve by setting an exhaust pressure filtering mechanism before the pressure relief valve, thereby effectively reducing the loss of refrigerant and lubricating oil in the air-conditioning system, helping to maintain the normal working environment of the compressor and improving operational reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the filter mechanism of the compressor exhaust pressure relief valve of the present invention.

[0025] Figure 2 It is a schematic cross-sectional view of the filter mechanism of the compressor exhaust pressure relief valve of the present invention.

[0026] Figure 3 It is a schematic diagram of a first embodiment of the filter mechanism of the compressor exhaust pressure relief valve of the present invention.

[0027] Figure 4 It is a schematic cross-sectional view of a first embodiment of the filter mechanism of the compressor discharge pressure relief valve according to the present invention.

[0028] Figure 5 It is a schematic diagram of a second embodiment of the filter mechanism of the compressor exhaust pressure relief valve of the present invention.

[0029] Figure 6 It is a schematic cross-sectional view of a second embodiment of the filter mechanism of the compressor discharge pressure relief valve according to the present invention.

[0030] In the accompanying drawings: 1. Shell; 11. Top shell; 12. Static vortex; 2. Partition; 3. Exhaust pipe; 4. Pressure relief valve; 5. Pressure relief buffer chamber; 6. Exhaust high-pressure chamber; 7. Oil pool; 8. Static vortex exhaust device; 9. Capillary flow channel. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention. Figure 1 Schematic diagram of the structure of the filter mechanism of the compressor exhaust pressure relief valve of the present invention; Figure 2 is a schematic cross-sectional view of a filter mechanism of a compressor exhaust pressure relief valve according to the present invention; Figure 3 1 is a schematic diagram of a first embodiment of a filter mechanism for a compressor exhaust pressure relief valve according to the present invention; Figure 4 is a schematic cross-sectional view of a first embodiment of a filter mechanism for a compressor exhaust pressure relief valve according to the present invention; Figure 5is a schematic diagram of a second embodiment of the filter mechanism of the compressor exhaust pressure relief valve of the present invention; Figure 6 This is a schematic diagram of a cross section of a second embodiment of the filter mechanism of the compressor exhaust pressure relief valve of the present invention, see Figure 1 and Figure 2 As shown, a filtering mechanism of a compressor exhaust pressure relief valve in a preferred embodiment is shown, comprising: an exhaust high-pressure chamber 6, a pressure relief buffer chamber 5, a static vortex 12 and a pressure relief valve 4, wherein the exhaust high-pressure chamber 6 and the pressure relief buffer chamber 5 are connected through a capillary flow channel 9; a static vortex exhaust device 8 is provided on the static vortex 12, and the static vortex exhaust device 8 is connected to the exhaust high-pressure chamber 6; one end of the pressure relief valve 4 is connected to the pressure relief buffer chamber 5, and the other end of the pressure relief valve 4 is connected to the external space; wherein, the ratio of the volume of the pressure relief buffer chamber 5 to the volume of the exhaust high-pressure chamber 6 is not less than 0.01; the ratio of the cross-sectional area of ​​the capillary flow channel 9 to the cross-sectional area of ​​the static vortex exhaust device 8 of the static vortex 12 is not greater than 0.2.

[0032] In a preferred embodiment, it also includes: a top shell 11, the top shell 11 and the static vortex 12 together form an accommodating space, the exhaust high-pressure chamber 6 and the pressure relief buffer chamber 5 are both arranged in the accommodating space, the static vortex 12 is a cover-like structure, the top shell 11 is installed on the static vortex 12, and the pressure relief valve 4 is arranged on the top shell 11.

[0033] In a preferred embodiment, it further includes: a partition 2, which is arranged in the shell 1, the side of the partition 2 is connected to the inner surface of the shell 1, and the partition 2 and a part of the shell 1 together form a sealed oil pool 7.

[0034] In a preferred embodiment, it also includes: an exhaust pipe 3, the exhaust pipe 3 is arranged in the shell 1, one end of the exhaust pipe 3 is connected to the exhaust high-pressure chamber 6, and the other end of the exhaust pipe 3 is connected to the external space, and the exhaust high-pressure chamber 6 is arranged on one side of the exhaust pipe 3.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the implementation and protection scope of the present invention.

[0036] The present invention also has the following implementation modes based on the above:

[0037] In a further embodiment of the present invention, an angle is formed between the exhaust pipe 3 and the capillary channel 9 .

[0038] In a further embodiment of the present invention, the static scroll exhaust device 8 of the static scroll 12, the exhaust high-pressure chamber 6, the exhaust pipe 3 and the external space are connected in sequence to form a first flow channel.

[0039] In a further embodiment of the present invention, the static vortex exhaust device 8, the exhaust high-pressure chamber 6, the capillary flow channel 9, the pressure relief buffer chamber 5, the pressure relief valve 4 and the external space of the static vortex 12 are connected in sequence to form a second flow channel.

[0040] Example 1

[0041] This embodiment provides a filter mechanism for a compressor exhaust pressure relief valve, such as Figure 3 、 Figure 4 shown.

[0042] In embodiment 1, the pressure relief buffer chamber 5 is provided on the other side of the exhaust pipe 3 .

[0043] Example 2

[0044] This embodiment provides a filter mechanism for a compressor exhaust pressure relief valve, such as Figure 3 、 Figure 4 shown.

[0045] In embodiment 2, the pressure relief buffer chamber 5 is in the shape of a circular hole and is opened on the top shell 11 .

[0046] In embodiment 2, it further includes: a first cavity, which is arranged on the other side of the exhaust pipe 3 and is connected to the exhaust high-pressure cavity 6.

[0047] The above are only preferred embodiments of the present invention and do not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A filter mechanism for a compressor exhaust pressure relief valve, characterized in that: include: an exhaust high-pressure chamber and a pressure relief buffer chamber, wherein the exhaust high-pressure chamber and the pressure relief buffer chamber are connected through a capillary flow channel; A static vortex, wherein the static vortex is provided with a static vortex exhaust device, and the static vortex exhaust device is connected to the exhaust high-pressure chamber; a pressure relief valve, one end of which is in communication with the pressure relief buffer chamber, and the other end of which is in communication with the external space; Wherein, the ratio of the volume of the pressure relief buffer chamber to the volume of the exhaust high-pressure chamber is not less than 0.01; a ratio of a cross-sectional area of ​​the capillary flow channel to a cross-sectional area of ​​the static scroll exhaust device of the static scroll is not greater than 0.2; It also includes: an exhaust pipe, which is arranged in the shell, one end of the exhaust pipe is connected to the exhaust high-pressure chamber, and the other end of the exhaust pipe is connected to the external space, and the exhaust high-pressure chamber is arranged on one side of the exhaust pipe.

2. The filter mechanism of the compressor exhaust pressure relief valve according to claim 1, characterized in that: Also includes: The top shell and the static scroll together form an accommodating space, the exhaust high-pressure chamber and the pressure relief buffer chamber are both arranged in the accommodating space, the static scroll is a cover-shaped structure, the top shell is installed on the static scroll, and the pressure relief valve is arranged on the top shell.

3. The filter mechanism of the compressor exhaust pressure relief valve according to claim 1, characterized in that: Also includes: A partition is provided in the shell, a side of the partition is connected to the inner surface of the shell, and the partition and a part of the shell together form a sealed oil pool.

4. The filter mechanism of the compressor exhaust pressure relief valve according to claim 1, characterized in that: An included angle is formed between the exhaust pipe and the capillary flow channel.

5. The filter mechanism of the compressor exhaust pressure relief valve according to claim 4, characterized in that: The static scroll exhaust device, the exhaust high-pressure chamber, the exhaust pipe and the external space of the static scroll are connected in sequence to form a first flow channel.

6. The filter mechanism of the compressor exhaust pressure relief valve according to claim 5, characterized in that: The static scroll exhaust device, the exhaust high-pressure chamber, the capillary flow channel, the pressure relief buffer chamber, the pressure relief valve and the external space of the static scroll are connected in sequence to form a second flow channel.

7. The filter mechanism of the compressor exhaust pressure relief valve according to claim 6, characterized in that: The pressure relief buffer chamber is arranged on the other side of the exhaust pipe.

8. The filter mechanism of the compressor exhaust pressure relief valve according to claim 2, characterized in that: The pressure relief buffer cavity is in the shape of a circular hole and is opened on the top shell.

9. The filter mechanism of the compressor exhaust pressure relief valve according to claim 8, characterized in that: Also includes: The first cavity is provided on the other side of the exhaust pipe, and the first cavity is communicated with the exhaust high-pressure cavity.

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