Compressor casing, compressor, turbocharger and vehicle

Abstract

The utility model discloses a compressor casing, a compressor, a turbocharger and a vehicle. The compressor casing comprises a first casing body and a second casing body. A compressed air inlet channel, a mounting cavity for mounting a compressor wheel and a compressed air outlet channel are arranged in the first shell, and the compressed air inlet channel and the compressed air outlet channel are both communicated with the mounting cavity; the second shell is arranged on the first shell, the second shell is in heat conduction connection with the first shell, a heating air channel is formed in the second shell, an air inlet of the heating air channel is used for being communicated with an oil-gas separator, and an air outlet of the heating air channel is communicated with the compressed air inlet channel. According to the compressor casing, the gas can be coked in the heating gas channel by heating the second casing body, so that the engine oil content in the gas is reduced, and the coking risk of the compressed gas inlet channel, the mounting cavity, the compressed gas outlet channel and the compressor wheel is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engine breathing system, and particularly relates to a compressor casing, a compressor, a turbocharger and a vehicle. BACKGROUND

[0002] In the prior art, an oil-gas separator of a vehicle separates the gas discharged from a crankcase, and the gas discharged from the oil-gas separator is compressed in a compressor and then enters a combustion chamber of an engine to be combusted.

[0003] However, the gas separated by the oil-gas separator still contains oil, and the gas discharged from the oil-gas separator enters the compressor, which causes a high risk of oil coking in the impeller and the inner cavity of the compressor. The coking in the impeller and the inner cavity of the compressor causes a decrease in the efficiency of the compressor. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to at least solve the problem of the high risk of oil coking in the impeller and the inner cavity of the compressor in the prior art. The aim is achieved in the following way:

[0005] The first aspect of the present application provides a compressor casing, comprising: a first casing and a second casing. A compressor air inlet channel, a compressor air outlet channel and a mounting cavity for mounting a compressor wheel are arranged in the first casing, and the compressor air inlet channel and the compressor air outlet channel are in communication with the mounting cavity; the second casing is arranged on the first casing and is in heat-conducting connection with the first casing, and a heating air channel is arranged in the second casing, an air inlet of the heating air channel is used for being in communication with an oil-gas separator, and an air outlet of the heating air channel is in communication with the compressor air inlet channel.

[0006] The compressor casing of the present application, when the compressor works, does work on the gas to compress the gas, and the internal energy of the gas increases in the process of being compressed, thereby causing the temperature of the first casing to increase. The second casing is arranged on the first casing, and the second casing can heat the gas in the heating air channel by absorbing the heat of the first casing, so that the oil in the gas is coked in the heating air channel, thereby reducing the oil content in the gas, and further reducing the coking risk of the compressor air inlet channel, the mounting cavity, the compressor air outlet channel and the compressor wheel.

[0007] In some embodiments, the first casing comprises a compressor air inlet part, a mounting part and a compressor air outlet part, the compressor air inlet part and the compressor air outlet part are connected with the mounting part, the compressor air inlet part is provided with the compressor air inlet channel, the mounting part is provided with the mounting cavity, the compressor air outlet part is provided with the compressor air outlet channel, and at least part of the second casing is arranged on the compressor air outlet part.

[0008] In some embodiments, the mounting portion is located between the air compressor air inlet portion and the air compressor air outlet portion, and the extension direction of at least part of the second shell is the same as the extension direction of the air compressor air outlet portion.

[0009] In some embodiments, the second shell comprises a main body portion and a cover plate, the main body portion is located outside the first shell and is arranged on the side of the air compressor air outlet portion away from the mounting portion, the main body portion is provided with the heating air passage, and the heating air passage forms a process opening on the side away from the air compressor air outlet portion, and the cover plate is arranged on the main body portion and seals the process opening.

[0010] In some embodiments, one part of the second shell is arranged on the side of the mounting portion away from the air compressor air inlet portion, and another part of the second shell is arranged on the side of the air compressor air outlet portion away from the mounting portion, the air inlet and the air outlet are both located on the side of the second shell away from the air compressor air inlet portion, the air inlet is used for communicating with the oil-gas separator through a first pipeline, and the air outlet is used for communicating with the air compressor air inlet passage through a second pipeline.

[0011] In some embodiments, the outer wall of part of the first shell constitutes part of the inner wall of the heating air passage.

[0012] In some embodiments, the air inlet is located at one end of the second shell, and the air outlet is located at the other end of the second shell.

[0013] The second aspect of the present application provides an air compressor, comprising the air compressor shell and the air compressor wheel of the first aspect, and the air compressor is rotatably arranged in the mounting cavity.

[0014] The third aspect of the present application provides a turbocharger, comprising the air compressor of the second aspect and a turbine, the turbine comprises a turbine shell and a turbine wheel, the turbine wheel is rotatably arranged in the turbine shell, and the turbine wheel is in driving connection with the air compressor wheel.

[0015] The fourth aspect of the present application provides a vehicle, comprising the turbocharger of the third aspect, an oil-gas separator and an engine, the oil-gas separator communicates with the air inlet of the heating air passage, and the engine communicates with the turbine shell and is used for driving the turbine to rotate by exhausting air into the turbine shell. BRIEF DESCRIPTION OF DRAWINGS

[0016] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a better understanding of the preferred embodiments and are not intended to be a limitation on the scope of the present application. Moreover, in the drawings, like reference numerals refer to similar components throughout the several views. In the drawings:

[0017] Figure 1 Fig. 1 is a schematic view of a compressor housing according to an embodiment of the present application.

[0018] The reference signs in the drawings represent the following items:

[0019] 100: compressor housing

[0020] 1: first housing; 11: compressor intake portion; 12: mounting portion; 13: compressor discharge portion

[0021] 2: second housing; 22: intake port; 23: discharge port DETAILED DESCRIPTION

[0022] Exemplary embodiments of the present application will be described herein below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it is understood that the present application can be embodied in many forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.

[0023] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order

[0024] Although the terms first, second, third, and the like can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to differentiate one element, component, region, layer or section from another region, layer or section. Terms such as "first", "second", and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments. In the description of the present application, the meaning of "a plurality" is at least two, for example, two, three or more, unless otherwise specifically defined.

[0025] For ease of description, spatial relative terms can be used herein to describe the relationship of one element or feature to another element or feature as shown in the figures, such as "inner", "outer", "inside", "outside", "lower", "below", "upper", "above", and the like. Such spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0026] In the description of the application, the orientation or positional relationship indicated by the technical terms "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", "height direction", "first direction", "second direction", and the like are based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed, operated or used in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the application.

[0027] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection or communication with each other; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] Engine oil coking refers to a series of chemical reactions that occur under high temperature, high pressure and oxidation, resulting in deterioration and thickening of engine oil, and ultimately forming coke-like substances.

[0029] In the prior art, the oil-gas separator of the vehicle separates the gas discharged from the crankcase, and the gas discharged from the oil-gas separator is compressed in the air compressor and enters the combustion chamber of the engine for combustion.

[0030] The compressor works on gas to compress the gas, and the internal energy of the gas increases during the compression process, thereby increasing the temperature of the compressor. The gas separated by the oil-gas separator still contains oil. The gas discharged from the oil-gas separator enters the compressor, and because the temperature of the compressor is relatively high, a large risk of oil coking exists in the compressor impeller and the inner cavity, and the coking of the compressor impeller and the inner cavity will cause the efficiency of the compressor to decrease.

[0031] To at least solve the problem of the large risk of oil coking in the compressor impeller and the inner cavity in the prior art. Embodiments of the present application propose a compressor shell 100, which can reduce the risk of coking of the compressor inlet passage, the mounting cavity, the compressor outlet passage and the compressor wheel by heating the second shell 2 to make the gas in the heating gas passage coking, thereby reducing the oil content in the gas.

[0032] The compressor shell 100 of the embodiments of the present application will be described below with reference to the accompanying drawings.

[0033] As shown in Figure 1 , the compressor shell 100 of the embodiments of the present application comprises a first shell 1 and a second shell 2. The first shell 1 is provided with a compressor inlet passage, a compressor outlet passage and a mounting cavity for mounting a compressor wheel, and the compressor inlet passage and the compressor outlet passage are both in communication with the mounting cavity; the second shell 2 is arranged on the first shell 1, the second shell 2 is in thermal contact with the first shell 1, and the second shell 2 is provided with a heating gas passage, the gas inlet 22 of the heating gas passage is used for communication with the oil-gas separator, and the gas outlet 23 of the heating gas passage is in communication with the compressor inlet passage.

[0034] When the compressor works, it does work on the gas to compress the gas, and the internal energy of the gas increases during the compression process, thereby increasing the temperature of the first shell 1. The second shell 2 is arranged on the first shell 1, and the second shell 2 can heat the gas in the heating gas passage by absorbing the heat of the first shell 1, so that the oil in the gas cokes in the heating gas passage, thereby reducing the oil content in the gas, and further reducing the risk of coking of the compressor inlet passage, the mounting cavity, the compressor outlet passage and the compressor wheel.

[0035] As shown in Figure 1 , in some embodiments, the first shell 1 comprises a compressor inlet portion 11, a mounting portion 12 and a compressor outlet portion 13, the compressor inlet portion 11 and the compressor outlet portion 13 are both connected with the mounting portion 12, the compressor inlet portion 11 is provided with a compressor inlet passage, the mounting portion 12 is provided with a mounting cavity, the compressor outlet portion 13 is provided with a compressor outlet passage, and at least part of the second shell 2 is arranged on the compressor outlet portion 13.

[0036] The gas in the first shell 1 is compressed and enters the compressed gas outlet channel. Since the compressed gas has high internal energy, the compressed gas outlet part 13 has high temperature. By arranging at least part of the second shell 2 at the compressed gas outlet part 13, the heat absorption efficiency of the second shell 2 can be improved, thereby increasing the amount of oil in the gas coking in the heating gas channel, and further reducing the coking risk of the compressed gas inlet channel, the mounting cavity, the compressed gas outlet channel and the compressor wheel.

[0037] As shown in Figure 1 some embodiments, the mounting part 12 is located between the compressed gas inlet part 11 and the compressed gas outlet part 13, and the extension direction of at least part of the second shell 2 is the same as the extension direction of the compressed gas outlet part 13.

[0038] By arranging at least part of the second shell 2 in the same extension direction as the compressed gas outlet part 13, the length of the second shell 2 and the heating gas channel can be increased, thereby improving the efficiency of removing oil in the gas.

[0039] Moreover, by arranging at least part of the second shell 2 in the same extension direction as the compressed gas outlet part 13, the heat absorption efficiency of the second shell 2 can be improved, thereby increasing the amount of oil in the gas coking in the heating gas channel, and further reducing the coking risk of the compressed gas inlet channel, the mounting cavity, the compressed gas outlet channel and the compressor wheel.

[0040] In some embodiments, the second shell 2 includes a main body part and a cover plate, the main body part is located outside the first shell 1 and arranged at the side of the compressed gas outlet part 13 away from the mounting part 12, the main body part is provided with a heating gas channel, the heating gas channel forms a process opening at the side away from the compressed gas outlet part 13, and the cover plate is arranged on the main body part and closes the process opening.

[0041] By forming the process opening in the main body part, the production difficulty of the main body part can be reduced, and by closing the process opening with the cover plate, the heating gas channel can work normally. Therefore, by the main body part and the cover plate, the forming difficulty of the second shell 2 and the heating gas channel can be reduced under the condition that the second shell 2 and the heating gas channel work normally.

[0042] As shown in Figure 1 some embodiments, part of the second shell 2 is arranged at the side of the mounting part 12 away from the compressed gas inlet part 11, and another part of the second shell 2 is arranged at the side of the compressed gas outlet part 13 away from the mounting part 12, the inlet port 22 and the outlet port 23 are located at the side of the second shell 2 away from the compressed gas inlet part 11, the inlet port 22 is used to communicate with the oil-gas separator through the first pipeline, and the outlet port 23 is used to communicate with the compressed gas inlet channel through the second pipeline.

[0043] Part of the second shell 2 is arranged on the side of the mounting portion 12 away from the air inlet portion 11, and the other part of the second shell 2 is arranged on the side of the air outlet portion 13 away from the mounting portion 12. The air inlet 22 and the air outlet 23 are both located on the side of the second shell 2 away from the air inlet portion 11, which can reduce the difficulty of connecting the air inlet 22 with the first pipeline and the difficulty of connecting the air outlet 23 with the second pipeline, so that the structure of the air compressor shell 100 in the embodiment is reasonably distributed.

[0044] In addition, by arranging the second shell 2 in the embodiment, the coking in the second shell 2 can be cleaned, so that the cleaning difficulty of the coking in the second shell 2 is reduced.

[0045] In some embodiments, part of the outer wall of the first shell 1 is configured as part of the inner wall of the heating air channel.

[0046] The gas in the heating air channel can be directly heated by the outer wall of the first shell 1, so that the heating effect of the gas in the heating air channel is improved, and the amount of coking of the machine oil in the gas in the heating air channel is increased, so that the coking risk of the air inlet channel, the mounting cavity, the air outlet channel and the air compressor wheel is further reduced.

[0047] In some embodiments, the air inlet 22 is located at one end of the second shell 2, and the air outlet 23 is located at the other end of the second shell 2.

[0048] By locating the air inlet 22 at one end of the second shell 2 and the air outlet 23 at the other end of the second shell 2, the space in the heating air channel can be fully utilized, so that the gas in the heating air channel is sufficiently heated, the amount of coking of the machine oil in the gas in the heating air channel is increased, and the coking risk of the air inlet channel, the mounting cavity, the air outlet channel and the air compressor wheel is further reduced.

[0049] The embodiment of the present application also provides an air compressor comprising the air compressor shell of the above embodiment.

[0050] The air compressor of the embodiment of the present application comprises: an air compressor wheel and the air compressor shell 100 of the above embodiment, and the air compressor is arranged in the mounting cavity in a rotatable manner.

[0051] In the working process of the air compressor of the embodiment of the present application, the air compressor wheel works on the gas to compress the gas, and the internal energy of the gas increases in the process of being compressed, so that the temperature of the first shell 1 increases. The second shell 2 is arranged on the first shell 1, and the second shell 2 can heat the gas in the heating air channel by absorbing the heat of the first shell 1, so that the machine oil in the gas is coked in the heating air channel, the content of the machine oil in the gas is reduced, and the coking risk of the air inlet channel, the mounting cavity, the air outlet channel and the air compressor wheel is reduced.

[0052] The embodiment of the present application also provides a turbocharger comprising the compressor of the above embodiment.

[0053] The turbocharger of the embodiment of the present application comprises the compressor of the above embodiment and a turbine, the turbine comprising a turbine shell and a turbine wheel rotatably arranged in the turbine shell and in transmission connection with the compressor wheel.

[0054] In operation, the compressor wheel of the turbocharger of the embodiment of the present application works on gas to compress the gas, and the gas increases in internal energy in the process of being compressed, thereby increasing the temperature of the first shell 1. The second shell 2 is arranged on the first shell 1, and the second shell 2 can heat the gas in the heating gas channel by absorbing the heat of the first shell 1, so as to cause the oil in the gas to coke in the heating gas channel, thereby reducing the oil content in the gas, and further reducing the coking risk of the compressor inlet channel, the mounting cavity, the compressor outlet channel and the compressor wheel, so as to keep the turbocharger of the embodiment of the present application working efficiently.

[0055] The embodiment of the present application also provides a vehicle comprising the turbocharger of the above embodiment.

[0056] The vehicle of the embodiment of the present application comprises the turbocharger of the above embodiment, an oil-gas separator and an engine. The oil-gas separator is in communication with the gas inlet 22 of the heating gas channel; and the engine is in communication with the turbine shell and is configured to drive the turbine wheel to rotate by discharging exhaust gas into the turbine shell.

[0057] In operation, the compressor wheel of the turbocharger of the embodiment of the present application works on gas to compress the gas, and the gas increases in internal energy in the process of being compressed, thereby increasing the temperature of the first shell 1. The second shell 2 is arranged on the first shell 1, and the second shell 2 can heat the gas in the heating gas channel by absorbing the heat of the first shell 1, so as to cause the oil in the gas to coke in the heating gas channel, thereby reducing the oil content in the gas, and further reducing the coking risk of the compressor inlet channel, the mounting cavity, the compressor outlet channel and the compressor wheel, so as to keep the turbocharger of the embodiment of the present application working efficiently.

[0058] In addition, heating the gas by the second shell 2 can also reduce the pressure drop between the gas inlet and the gas outlet of the oil-gas separator, so as to stabilize the operation of the vehicle.

[0059] The above merely provides a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any change or replacement within the technical range disclosed by the present application can be easily thought by any person skilled in the art, and should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A compressor housing, characterized in that, include: A first housing, wherein the first housing is provided with a compressed air inlet, a compressed air outlet, and a mounting cavity for mounting a compressor wheel, wherein the compressed air inlet and the compressed air outlet are both connected to the mounting cavity; The second housing is disposed on the first housing and is thermally connected to the first housing. The second housing is provided with a heating air passage. The air inlet of the heating air passage is used to communicate with the oil-gas separator, and the air outlet of the heating air passage is connected to the compressed air inlet passage.

2. The compressor housing according to claim 1, characterized in that, The first housing includes a compressed air inlet, a mounting part, and a compressed air outlet. The compressed air inlet and the compressed air outlet are both connected to the mounting part. The compressed air inlet is provided with a compressed air inlet channel, the mounting part is provided with a mounting cavity, and the compressed air outlet is provided with a compressed air outlet channel. At least a portion of the second housing is disposed in the compressed air outlet.

3. The compressor housing according to claim 2, characterized in that, The mounting portion is located between the compressed air inlet and the compressed air outlet, and at least a portion of the second housing extends in the same direction as the compressed air outlet.

4. The compressor housing according to claim 3, characterized in that, The second housing includes a main body and a cover plate. The main body is located outside the first housing and is disposed on the side of the compressed air outlet opposite to the mounting part. The main body is provided with the heating air passage, and the heating air passage forms a process opening on the side opposite to the compressed air outlet. The cover plate is disposed on the main body and closes the process opening.

5. The compressor housing according to claim 3, characterized in that, A portion of the second housing is located on the side of the mounting portion away from the compressed air inlet, and another portion of the second housing is located on the side of the compressed air outlet away from the mounting portion. The air inlet and the air outlet are both located on the side of the second housing away from the compressed air inlet. The air inlet is used to communicate with the oil-gas separator through a first pipeline, and the air outlet is used to communicate with the compressed air inlet through a second pipeline.

6. The compressor housing according to any one of claims 1 to 5, characterized in that, A portion of the outer wall of the first housing forms part of the inner wall of the heating air passage.

7. The compressor housing according to any one of claims 1 to 5, characterized in that, The air inlet is located at one end of the second housing, and the air outlet is located at the other end of the second housing.

8. A compressor, characterized in that, include: The compressor housing as described in any one of claims 1 to 7; The compressor wheel is rotatably disposed within the mounting cavity.

9. A turbocharger, characterized in that, include: The compressor as described in claim 8; A turbine includes a turbine housing and a turbine, the turbine being rotatably disposed within the turbine housing and being drively connected to the compressor wheel.

10. A vehicle, characterized in that, include: The turbocharger as described in claim 9; An oil-gas separator is connected to the air inlet of the heating air passage; An engine, which is in communication with the turbine housing, is used to drive the turbine to rotate by exhausting gas into the turbine housing.

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