Compressor

Abstract

The utility model discloses a compressor, and relates to the technical field of compressor exhaust, the compressor comprises a compressor body, a main exhaust pipe, a one-way exhaust assembly and a pressure relief assembly, the compressor body is provided with an exhaust system; the main exhaust pipe is arranged on the outer wall of the compressor body and communicates with the exhaust system; the one-way exhaust assembly is arranged at the end, away from the compressor body, of the main exhaust pipe and communicates with the main exhaust pipe; the pressure relief assembly is arranged on the periphery of the main exhaust pipe and communicates with the main exhaust pipe. According to the technical scheme, the problem that surge is generated when an existing compressor operates is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor exhaust, in particular to a compressor. Background Art

[0002] The compressor is a driven fluid machine that boosts low-pressure gas to high-pressure gas. It is the heart of the refrigeration system. It sucks low-temperature, low-pressure refrigerant gas from the suction pipe, compresses it through the motor, and discharges high-temperature, high-pressure refrigerant gas to the exhaust pipe, providing power for the refrigeration cycle.

[0003] During the operation of the compressor, when the intake air flow is less than the exhaust air flow to a certain extent, the internal pressure of the compressor is less than the internal pressure of the exhaust pipe. The airflow in the exhaust pipe will flow back into the compressor under the action of the pressure difference, causing the compressor to surge. Surge is very harmful to centrifugal compressors, especially when the frequency conversion is low-load operation, the surge of the centrifugal compressor is more serious. When the compressor surges, the system cannot work normally, and it will pose a huge threat to the safety of the compressor and the life of the unit. Utility Model Content

[0004] The main purpose of the utility model is to provide a compressor, aiming to solve the problem of surge generated by the existing compressor during operation.

[0005] In order to achieve the above-mentioned object, the utility model provides a compressor, which comprises:

[0006] A compressor body having an exhaust system;

[0007] A main exhaust pipe, disposed on the outer wall of the compressor body and connected to the exhaust system;

[0008] a one-way exhaust assembly, disposed at one end of the main exhaust pipe away from the compressor body and communicated with the main exhaust pipe; and

[0009] The pressure relief component is arranged on the outer periphery of the main exhaust pipe and is communicated with the main exhaust pipe.

[0010] In one embodiment, the compressor further includes an auxiliary exhaust pipe, which is disposed at one end of the one-way exhaust component away from the main exhaust pipe and is communicated with the one-way exhaust component.

[0011] In one embodiment, the one-way exhaust assembly comprises:

[0012] a one-way pipe, disposed between the main exhaust pipe and the auxiliary exhaust pipe to connect the main exhaust pipe and the auxiliary exhaust pipe; and

[0013] The one-way valve is fixedly arranged inside the one-way tube to open or close the passage inside the one-way tube.

[0014] In one embodiment, the compressor further includes a first conducting pipe, one end of which is in communication with the pressure relief assembly, and the other end of which is in communication with the auxiliary exhaust pipe.

[0015] In one embodiment, the pressure relief assembly comprises:

[0016] a pressure relief pipe, which is arranged on the outer periphery of the main exhaust pipe, and one end of the pressure relief pipe is connected to the main exhaust pipe, and the other end of the pressure relief pipe is connected to the first conducting pipe; and

[0017] The pressure relief valve is fixedly arranged in the pressure relief pipe to open or close the passage in the first conducting pipe.

[0018] In one embodiment, the compressor further includes an air blowing assembly, which is disposed on an outer periphery of the auxiliary exhaust pipe and connects the auxiliary exhaust pipe and the first conducting pipe.

[0019] In one embodiment, the blowing assembly comprises:

[0020] an air blowing pipe, one end of which is connected to the auxiliary exhaust pipe, and the other end of which is connected to the first conducting pipe; and

[0021] The air nozzle is arranged in the air blowing pipe and is located at one end of the air blowing pipe close to the auxiliary exhaust pipe.

[0022] In one embodiment, the compressor further includes a fan assembly, and the fan assembly is disposed inside the auxiliary exhaust pipe and opposite to the blowing assembly.

[0023] In one embodiment, the fan assembly comprises:

[0024] A mounting block fixedly disposed inside the auxiliary exhaust pipe; and

[0025] The fan is rotatably arranged on one side of the mounting block and is arranged opposite to the air blowing component.

[0026] In one embodiment, the compressor further includes a second conducting pipe, one end of the second conducting pipe is communicated with the pressure relief assembly, and the other end of the second conducting pipe is communicated with the auxiliary exhaust pipe.

[0027] In the technical solution of the utility model, a main exhaust pipe connected to the exhaust system is provided, and is used to guide the compressed gas generated inside the compressor body to the outside to complete the exhaust process; and a pressure relief component connected to the inside of the main exhaust pipe is provided on the periphery of the main exhaust pipe. During the operation of the compressor, when the pressure exceeds the set value, the excess pressure will be automatically released, which will improve the surge phenomenon of the compressor to a certain extent, thereby protecting the compressor or other equipment from damage. In this solution, a one-way exhaust component is provided at the end of the main exhaust pipe away from the compressor body. The design of the one-way exhaust component can ensure that the compressed gas can only flow in one direction, avoiding a certain degree of reverse flow of the gas due to its own inertia after closing the pressure relief component, so that part of the high-pressure gas re-enters the exhaust system, causing surge to occur again. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0029] Figure 1 A schematic structural diagram of an embodiment of a compressor provided by the utility model;

[0030] Figure 2 A partial structural schematic diagram of another embodiment of a compressor provided by the utility model;

[0031] Figure 3 This is a schematic diagram of the internal structure of another embodiment of the compressor provided by the utility model.

[0032] Description of Figure Numbers:

[0033] 100. compressor; 1. compressor body; 2. main exhaust pipe; 3. one-way exhaust assembly; 31. one-way pipe; 32. one-way valve; 4. pressure relief assembly; 41. pressure relief pipe; 42. pressure relief valve; 5. auxiliary exhaust pipe; 6. first conducting pipe; 7. air blowing assembly; 71. air blowing pipe; 72. air nozzle; 8. fan assembly; 81. mounting block; 82. fan.

[0034] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0037] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0038] During the operation of the compressor, when the intake air flow is less than the exhaust air flow to a certain extent, the internal pressure of the compressor is less than the internal pressure of the exhaust pipe. The airflow in the exhaust pipe will flow back into the compressor under the action of the pressure difference, causing the compressor to surge. Surge is very harmful to centrifugal compressors, especially when the frequency conversion is low-load operation, the surge of the centrifugal compressor is more serious. When the compressor surges, the system cannot work normally, and it will pose a huge threat to the safety of the compressor and the life of the unit.

[0039] The utility model provides a compressor.

[0040] See also Figure 1 and Figure 2 In one embodiment of the present invention, the compressor 100 comprises:

[0041] The compressor body 1 has an exhaust system;

[0042] The main exhaust pipe 2 is arranged on the outer wall of the compressor body 1 and is connected to the exhaust system;

[0043] A one-way exhaust assembly 3 is provided at one end of the main exhaust pipe 2 away from the compressor body 1 and is communicated with the main exhaust pipe 2; and

[0044] The pressure relief assembly 4 is disposed on the outer periphery of the main exhaust pipe 2 and is communicated with the main exhaust pipe 2 .

[0045] In the technical solution of the utility model, a main exhaust pipe 2 connected to the exhaust system is provided, and is used to guide the compressed gas generated inside the compressor body 1 to the outside to complete the exhaust process; and a pressure relief component 4 connected to the inside is provided on the periphery of the main exhaust pipe 2. During the operation of the compressor 100, when the pressure exceeds the set value, the excess pressure will be automatically released, which will improve the surge phenomenon of the compressor 100 to a certain extent, thereby protecting the compressor 100 or other equipment from damage. In this solution, a one-way exhaust component 3 is provided at the end of the main exhaust pipe 2 away from the compressor body 1. The design of the one-way exhaust component 3 can ensure that the compressed gas can only flow in one direction, avoiding a certain degree of reverse flow of the gas due to its own inertia after closing the pressure relief component 4, so that part of the high-pressure gas re-enters the exhaust system, causing surge to occur again.

[0046] Specifically, the one-way exhaust component 3 in this solution can make the compressed gas discharged from the exhaust system flow only in one direction in the main exhaust pipe 2 and be discharged to the outside, but cannot flow back to the inside of the compressor body 1. Compared with the method of setting the pressure relief component 4 to prevent surge by adjusting the pressure, the cooperation of the one-way exhaust component 3 and the pressure relief component 4 can more effectively prevent the backflow of gas, avoid part of the compressed gas re-entering the exhaust system to cause vibration and surge to occur again, and the anti-surge effect is more excellent, thereby increasing the service life of the compressor 100.

[0047] In one embodiment of the present invention, please refer to Figures 1 to 3 The compressor 100 also includes an auxiliary exhaust pipe 5, which is arranged at one end of the one-way exhaust component 3 away from the main exhaust pipe 2 and is connected to the one-way exhaust component 3. The provision of the auxiliary exhaust pipe 5 extends the length of the main exhaust pipe 2 extending out of the compressor body 1, which facilitates the connection between the compressor 100 and other components, thereby improving the sealing of the connection between the compressor 100 and other external devices to prevent leakage of compressed gas. There is no specific limitation on the connection method between the auxiliary exhaust pipe 5 and the one-way exhaust component 3. For example, welding, threaded connection or other reliable connection methods can be used. It should be noted that the connection method between the auxiliary exhaust pipe 5 and the one-way exhaust component 3 should ensure sealing performance to prevent gas leakage. In addition, the layout of the auxiliary exhaust pipe 5 should be as simple as possible to avoid excessive bends and elbows to reduce exhaust resistance.

[0048] In one embodiment of the present invention, please refer to Figure 3 , the one-way exhaust assembly 3 comprises:

[0049] A one-way pipe 31 is provided between the main exhaust pipe 2 and the auxiliary exhaust pipe 5 to connect the main exhaust pipe 2 and the auxiliary exhaust pipe 5; and

[0050] The one-way valve 32 is fixedly disposed inside the one-way tube 31 to open or close the passage inside the one-way tube 31 .

[0051] Specifically, in order to ensure that the compressed gas discharged through the exhaust system can only flow in one direction in the main exhaust pipe 2, the one-way exhaust assembly 3 includes a one-way pipe 31 and a one-way valve 32. It should be noted that the two ends of the one-way pipe 31 should be designed with suitable interfaces to reliably connect with the main exhaust pipe 2 and the auxiliary exhaust pipe 5. For example, the connection method can be flange connection, threaded connection or quick connector, etc.; Of course, the two ends of the one-way pipe 31 and the connection between the main exhaust pipe 2 and the auxiliary exhaust pipe 5 can also have a partially overlapping part, and the connection is sealed with a sealant to ensure the sealing and prevent leakage. The setting of the one-way valve 32 can be opened in a single direction to prevent the gas from flowing in the opposite direction, which can be achieved by a spring, a diaphragm or a similar mechanical structure. The one-way valve 32 can respond quickly to pressure changes. When the exhaust pressure of the compressor 100 exceeds the set value, the valve should be able to open automatically to allow the gas to flow to the auxiliary exhaust pipe 5; when the pressure decreases, the valve should be able to close automatically to prevent the gas from flowing back to the main exhaust pipe 2.

[0052] In one embodiment of the present invention, please refer to Figures 1 to 3 The compressor 100 further includes a first conducting pipe 6, one end of which is connected to the pressure relief assembly 4, and the other end of which is connected to the auxiliary exhaust pipe 5. In this way, the compressed gas in the main exhaust pipe 2 can be exhausted through the two channels of the one-way exhaust assembly 3 and the first conducting pipe 6, respectively, which shortens the exhaust time, can effectively improve the exhaust efficiency of the compressor 100, and reduce the operating energy consumption.

[0053] In one embodiment of the present invention, please refer to Figure 3 , the pressure relief assembly 4 comprises:

[0054] A pressure relief pipe 41 is disposed on the outer periphery of the main exhaust pipe 2, and one end of the pressure relief pipe 41 is connected to the main exhaust pipe 2, and the other end of the pressure relief pipe 41 is connected to the first conducting pipe 6; and

[0055] The pressure relief valve 42 is fixedly disposed in the pressure relief pipe 41 to open or close the passage in the first conducting pipe 6 .

[0056] Specifically, the pressure relief assembly 4 includes a pressure relief pipe 41 and a pressure relief valve 42. One end of the pressure relief pipe 41 should be designed with a suitable interface so as to be reliably connected to the main exhaust pipe 2, and the other end should be connected to the first conducting pipe 6. The connection method can be flange connection, threaded connection or quick connector, etc. The pressure relief valve 42 can be designed as a valve that can be opened in a single direction. When the exhaust pressure of the compressor 100 exceeds the set value, the valve should be able to open automatically to allow the gas to flow to the first conducting pipe 6; when the pressure drops to a safe range, the valve should be able to close automatically to prevent the gas from continuing to release pressure. In addition, the pressure relief valve 42 can respond quickly to pressure changes, and its opening and closing actions should be smooth and reliable, which can usually be achieved by a spring, a diaphragm or a similar mechanical structure. The connection method of the pressure relief valve 42 should be easy to disassemble and install, so as to reduce the downtime and maintenance cost of the compressor 100 when damage occurs and needs to be replaced.

[0057] In one embodiment of the present invention, please refer to Figure 3 The compressor 100 further includes an air blowing assembly 7, which is disposed on the outer periphery of the auxiliary exhaust pipe 5 and connects the auxiliary exhaust pipe 5 and the first conducting pipe 6. During the operation of the compressor 100, the air blowing assembly 7 can increase the flow rate of the gas discharged from the first conducting pipe 6 by blowing air, thereby accelerating the discharge of the gas from the auxiliary exhaust pipe 5, improving the exhaust efficiency and also playing a role in cooling the compressor 100.

[0058] In one embodiment of the present invention, please refer to Figure 3 , the blowing assembly 7 comprises:

[0059] An air blowing pipe 71, one end of the air blowing pipe 71 is connected to the auxiliary exhaust pipe 5, and the other end of the air blowing pipe 71 is connected to the first conducting pipe 6; and

[0060] The air nozzle 72 is disposed in the air blowing pipe 71 and is located at one end of the air blowing pipe 71 close to the auxiliary exhaust pipe 5 .

[0061] Specifically, the blowing assembly 7 includes a blowing pipe 71 and an air nozzle 72, one end of the blowing pipe 71 is connected to the auxiliary exhaust pipe 5, and the other end is connected to the first conducting pipe 6. The air nozzle 72 is arranged in the blowing pipe 71, and is located at one end of the blowing pipe 71 close to the auxiliary exhaust pipe 5. For example, an air hole can be opened on the outer periphery of the auxiliary exhaust pipe 5, and the blowing pipe 71 is connected in the air hole. When the compressor 100 is running, the heat and gas generated inside the compressor 100 can be discharged through the main exhaust pipe 2 and the first conducting pipe 6 in turn, and accelerated to flow to the auxiliary exhaust pipe 5 through the blowing pipe 71 and the air nozzle 72, and finally discharged from the auxiliary exhaust pipe 5, thereby realizing the cooling of the interior of the compressor 100 and the surrounding environment. It should be noted that a plurality of blowing ports can be provided on the air nozzle 72 to improve the stability of the airflow in the auxiliary exhaust pipe 5.

[0062] In one embodiment of the present invention, please refer to Figure 3 The compressor 100 also includes a fan assembly 8, which is arranged inside the auxiliary exhaust pipe 5 and is arranged opposite to the blowing assembly 7. In this way, the gas blown out by the blowing assembly 7 can converge toward the fan assembly 8. The fan assembly 8 can increase the gas flow rate in the auxiliary exhaust pipe 5, accelerate the discharge of the gas from the auxiliary exhaust pipe 5, shorten the exhaust time, and improve the exhaust efficiency of the compressor 100.

[0063] In one embodiment of the present invention, please refer to Figure 3 , the fan assembly 8 comprises:

[0064] The mounting block 81 is fixedly mounted inside the auxiliary exhaust pipe 5; and

[0065] The fan 82 is rotatably disposed on one side of the mounting block 81 and is disposed opposite to the blowing assembly 7 .

[0066] Specifically, the fan assembly 8 includes a mounting block 81 and a fan 82. The mounting block 81 is arranged in the auxiliary exhaust pipe 5 near the position of the blowing assembly 7, so that the gas blown out of the blowing assembly 7 is directly gathered at the fan 82, and the operation of the fan 82 can increase the gas flow speed nearby, accelerate the speed of gas discharge from the auxiliary exhaust pipe 5, shorten the exhaust time, and improve the exhaust efficiency. It should be noted that the fan 82 is rotatably arranged on the mounting block 81, and the flow direction of the gas blown out by the fan 82 can be changed, so as to increase the gas in the auxiliary exhaust pipe 5 to flow out from multiple directions, and further improve the exhaust efficiency. Of course, the setting of the fan 82 can also take away the heat generated during the operation of the compressor body 1 in a timely manner and export it to the outside.

[0067] In one embodiment of the utility model, the compressor 100 also includes a second conducting pipe, one end of which is connected to the pressure relief assembly 4, and the other end of the second conducting pipe is connected to the auxiliary exhaust pipe 5. In this way, the three channels of the first conducting pipe 6, the second conducting pipe and the auxiliary exhaust pipe 5 can all be used for exhaust of the exhaust system to prevent the gas pressure in the main exhaust pipe 2 from being too high and exceeding the threshold, which can not only improve the exhaust efficiency, but also protect the compressor 100 and other related equipment from damage.

[0068] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A compressor, characterized in that: The compressor comprises: A compressor body having an exhaust system; A main exhaust pipe, disposed on the outer wall of the compressor body and connected to the exhaust system; A one-way exhaust assembly is provided at one end of the main exhaust pipe away from the compressor body and is communicated with the main exhaust pipe; A pressure relief assembly, disposed on the outer periphery of the main exhaust pipe and communicated with the main exhaust pipe; An auxiliary exhaust pipe is arranged at one end of the one-way exhaust component away from the main exhaust pipe and is communicated with the one-way exhaust component.

2. The compressor according to claim 1, characterized in that The one-way exhaust assembly comprises: a one-way pipe, disposed between the main exhaust pipe and the auxiliary exhaust pipe to connect the main exhaust pipe and the auxiliary exhaust pipe; and The one-way valve is fixedly arranged inside the one-way tube to open or close the passage inside the one-way tube.

3. The compressor according to claim 1, characterized in that The compressor further includes a first conducting pipe, one end of which is in communication with the pressure relief assembly, and the other end of which is in communication with the auxiliary exhaust pipe.

4. The compressor according to claim 3, characterized in that The pressure relief assembly comprises: a pressure relief pipe, which is arranged on the outer periphery of the main exhaust pipe, and one end of the pressure relief pipe is connected to the main exhaust pipe, and the other end of the pressure relief pipe is connected to the first conducting pipe; and The pressure relief valve is fixedly arranged in the pressure relief pipe to open or close the passage in the first conducting pipe.

5. The compressor according to claim 4, characterized in that The compressor further includes an air blowing assembly, which is disposed on the outer periphery of the auxiliary exhaust pipe and connects the auxiliary exhaust pipe and the first conducting pipe.

6. The compressor according to claim 5, characterized in that The blowing assembly comprises: an air blowing pipe, one end of which is connected to the auxiliary exhaust pipe, and the other end of which is connected to the first conducting pipe; and The air nozzle is arranged in the air blowing pipe and is located at one end of the air blowing pipe close to the auxiliary exhaust pipe.

7. The compressor according to claim 5, characterized in that The compressor further comprises a fan assembly, which is arranged inside the auxiliary exhaust pipe and opposite to the air blowing assembly.

8. The compressor according to claim 7, characterized in that The fan assembly comprises: A mounting block fixedly disposed inside the auxiliary exhaust pipe; and The fan is rotatably arranged on one side of the mounting block and is arranged opposite to the air blowing component.

9. The compressor according to any one of claims 2 to 8, characterized in that The compressor further includes a second conducting pipe, one end of which is communicated with the pressure relief assembly, and the other end of which is communicated with the auxiliary exhaust pipe.

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