Gas outlet heating device of oil-gas separator and engine assembly

Abstract

The utility model belongs to the technical field of engines, and particularly relates to a gas outlet heating device of an oil-gas separator and an engine assembly. The gas outlet heating device of the oil-gas separator comprises a pipe body, a sleeve and a heating assembly, one end of the pipe body is communicated with a gas outlet pipe of the oil-gas separator, and the other end of the pipe body is communicated with the external environment; the sleeve sleeves the pipe body, the inner wall of the sleeve and the outer wall of the pipe body form a heating cavity, the sleeve is connected with a heating water inlet pipe and a heating water outlet pipe, and the heating water inlet pipe and the heating water outlet pipe are used for communicating the heating cavity with a cooling water path in the engine to form a loop; the heating assembly is connected to the pipe body and used for heating the pipe body. The cooling liquid introduced into the cooling water channel is used for heating the outlet gas, so that the operation time of the heating assembly can be shortened, and the problems of high energy consumption or poor device reliability caused by the fact that the heating assembly is in a heating state for a long time are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of engine, concretely relates to an oil gas separator gas outlet heating device and engine assembly. BACKGROUND

[0002] The oil gas separator is an important component in the crankcase ventilation system. The air inlet of the oil gas separator is communicated with the crankcase, and the air outlet is communicated with the air inlet pipe of the engine. The oil gas separator filters the solid impurities in the exhaust gas through the filter element to prevent them from entering the engine interior. At the same time, it can effectively separate the water vapor and oil in the exhaust gas, and the pure exhaust gas is discharged into the atmosphere through the outlet. Among them, since the separated gas contains moisture, when the ambient temperature is too low, the outlet pipe will be blocked due to the internal high humidity gas freezing, which will cause the crankcase pressure to be too high, the supercharger to leak oil, and even the engine to fail to start and other faults.

[0003] In the prior art, in order to prevent the oil gas separator outlet pipe from freezing, a heater is usually arranged on the outlet pipe. However, in low temperature conditions, the heater is always in working state, which consumes a lot of battery of the engine, and the heater is in heating state for a long time, which is seriously worn and is prone to failure.

[0004] Therefore, it is urgent to provide an efficient and energy-saving oil gas separator outlet heating device and engine assembly to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model at least aims at providing an efficient and energy-saving oil gas separator outlet heating device. The purpose is achieved by the following technical solutions:

[0006] The utility model discloses a first aspect provides an oil gas separator outlet heating device, comprising:

[0007] The pipe body is used for being communicated with the outlet pipe of the oil gas separator at one end, and the other end is used for being communicated with the external environment;

[0008] The sleeve is sleeved on the pipe body, and the inner wall of the sleeve and the outer wall of the pipe body form a heating cavity; the sleeve is connected with a heating water inlet pipe and a heating water outlet pipe; the heating water inlet pipe and the heating water outlet pipe are used for connecting the heating cavity and the cooling water channel inside the engine;

[0009] The heating assembly is connected to the pipe body and is used for heating the pipe body.

[0010] The oil-gas separator gas outlet heating device in the technical scheme is connected with the gas outlet pipe of the oil-gas separator, so that the gas discharged from the gas outlet pipe directly enters the pipe body, and the gas and the pipe body are heat exchanged, and then the gas is discharged to the external environment. Under the preset condition, the cooling liquid in the cooling water circuit enters the heating cavity and the pipe body through the heating inlet pipe to exchange heat, and the cooling liquid after heat exchange flows back to the cooling water circuit through the heating outlet pipe. When the temperature of the cooling liquid can prevent the gas from freezing, only the cooling liquid is used to heat the gas, and the heating assembly does not need to be started. When the cooling liquid cannot provide heat for the pipe body, the heating assembly is started to provide heat for the gas to prevent the gas from freezing. In summary, the cooling liquid in the cooling water circuit is introduced to heat the gas, which can reduce the operation time of the heating assembly and avoid problems such as large energy consumption or poor reliability of the device caused by the heating assembly being in a heating state for a long time.

[0011] In addition, the oil-gas separator gas outlet heating device can further have the following additional technical features.

[0012] In some embodiments of the utility model, the heating assembly comprises a protective cover and a heating piece, the protective cover is connected to the pipe body, and the heating piece is located inside the protective cover and connected to the pipe body.

[0013] In some embodiments of the utility model, the protective cover comprises a sleeve part and a shell, the shell is connected to the sleeve part, the sleeve part is sleeved on the pipe body, and the heating piece is located inside the shell.

[0014] In some embodiments of the utility model, the heating piece is connected with a power supply pin, and the power supply pin is used to connect a power supply.

[0015] The utility model also provides an engine assembly, which comprises an oil-gas separator, an engine and the oil-gas separator gas outlet heating device in the above-mentioned embodiments, the oil-gas separator comprises a gas outlet pipe and a gas inlet pipe, the pipe body and the gas outlet pipe are communicated, the gas inlet pipe and the engine are communicated, the inside of the engine is provided with a cooling water circuit, and the heating inlet pipe and the heating outlet pipe are communicated with the cooling water circuit respectively.

[0016] In some embodiments of the utility model, the gas outlet pipe is sleeved with a heat preservation layer.

[0017] In some embodiments of the utility model, the heat preservation layer is a rubber piece.

[0018] In some embodiments of the utility model, the cooling water circuit is connected with a cooling water outlet pipe, a thermostat is arranged on the cooling water outlet pipe, and the thermostat is configured to communicate the heating inlet pipe and the cooling water outlet pipe when the thermostat is opened.

[0019] In some embodiments of the utility model, a cooling liquid temperature detection unit is arranged on the cooling water outlet pipe, the temperature sensor is located upstream of the thermostat, the cooling liquid temperature detection unit is used to detect the cooling liquid temperature, and the heating assembly is configured to start or stop according to the cooling liquid temperature.

[0020] In some embodiments of the utility model, a radiator is communicated with the cooling water outlet pipe, the radiator is communicated with the cooling water circuit through a cooling water inlet pipe, and the water inlet end of the heating inlet pipe is located between the radiator and the thermostat. BRIEF DESCRIPTION OF DRAWINGS

[0021] 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 with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to be limiting in any respect. Like reference numerals are used throughout the drawings to indicate similar or identical parts. In the drawings:

[0022] Figure 1 A cross-sectional schematic view of the oil-gas separator gas outlet heating device according to the embodiments of the utility model is schematically shown;

[0023] Figure 2 A working principle diagram of the engine assembly according to the embodiments of the utility model is schematically shown;

[0024] Figure 3 A control principle diagram of the engine assembly according to the embodiments of the utility model is schematically shown.

[0025] The various reference numerals in the drawings represent the following:

[0026] 100, oil-gas separator gas outlet heating device; 110, pipe body; 111, heating cavity; 120, sleeve; 121, heating inlet pipe; 122, heating outlet pipe; 130, heating assembly; 131, protective cover; 131a, sleeving part; 131b, shell; 132, heating element;

[0027] 200, oil-gas separator; 210, gas outlet pipe; 220, gas inlet pipe; 300, engine; 310, cooling water circuit; 311, cooling water outlet pipe; 312, cooling water inlet pipe; 400, thermostat; 500, cooling liquid temperature detection unit; 600, radiator; 700, controller; 800, relay. DETAILED DESCRIPTION

[0028] Exemplary embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it is to be understood that the present disclosure can be embodied in many forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the present disclosure to those skilled in the art.

[0029] 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 the like are to be construed to be inclusive (i.e., to include both instances of open ended terms and instances of terms limiting to a specific number) unless otherwise indicated as otherwise limited by context. The methods described herein can be implemented as a method, an apparatus, a system, a computer program product, computer-readable medium, computer program, or a combination thereof.

[0030] 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 distinguish 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.

[0031] For ease of description, spatial relative terms can be used herein to describe a relationship of one element or feature to another element or feature as shown in the drawings, such as "inner", "outer", "inside", "outside", "lower", "below", "upper", "above", etc. 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. Embodiments of the present application will support these orientations.

[0032] Figure 1 A cross-sectional schematic view of the oil-gas separator gas outlet heating device 100 according to the embodiment of the present application is schematically shown. Figure 2 A working principle diagram of the engine assembly according to the embodiment of the present application is schematically shown. Figure 1 And Figure 2 As shown in the figures, the present application provides an oil-gas separator gas outlet heating device 100, which comprises a pipe body 110, a sleeve 120 and a heating assembly 130; one end of the pipe body 110 is used to communicate with a gas outlet pipe 210 of an oil-gas separator 200, and the other end of the pipe body 110 is used to communicate with an external environment; the sleeve 120 is sleeved on the pipe body 110, an inner wall of the sleeve 120 and an outer wall of the pipe body 110 form a heating cavity 111, the sleeve 120 is connected with a heating water inlet pipe 121 and a heating water outlet pipe 122, the heating water inlet pipe 121 and the heating water outlet pipe 122 are used to communicate the heating cavity 111 and a cooling water circuit 310 inside an engine 300 to form a loop; the heating assembly 130 is connected to the pipe body 110 and is used to heat the pipe body 110.

[0033] The oil-gas separator gas outlet heating device 100 in the technical solution is connected with the gas outlet pipe 210 of the oil-gas separator 200, so that the gas discharged from the gas outlet pipe 210 directly enters the pipe body 110, and the gas exchanges heat with the pipe body 110 and is then discharged to the external environment. Under the preset condition, the cooling liquid in the cooling water channel 310 enters the heating cavity 111 and the pipe body 110 through the heating inlet pipe 121 to exchange heat, and the cooling liquid after heat exchange flows back to the cooling water channel 310 through the heating outlet pipe 122. When the temperature of the cooling liquid can prevent the gas from icing, only the cooling liquid is used to heat the gas, and the heating assembly 130 does not need to be started. When the cooling liquid cannot provide heat for the pipe body 110, the heating assembly 130 is started to provide heat for the gas to prevent the gas from icing. In summary, the cooling liquid in the cooling water channel 310 is introduced to heat the gas, which can reduce the operation time of the heating assembly 130 and avoid problems such as large energy consumption or poor device reliability caused by the heating assembly 130 being in a heating state for a long time.

[0034] Continuing to refer to Figure 1 The heating assembly 130 includes a protective cover 131 and a heating element 132, the protective cover 131 is connected to the pipe body 110, and the heating element 132 is located in the interior of the protective cover 131 and connected to the pipe body 110.

[0035] It can be understood that the protective cover 131 protects the heating element 132 from being contaminated by foreign matter. Optionally, the heating element 132 can be a resistance wire or a heating chip. Exemplarily, the heating chip can be a silicon nitride ceramic heating chip.

[0036] Further, the protective cover 131 includes a sleeve portion 131a and a shell 131b, the shell 131b is connected to the sleeve portion 131a, and the sleeve portion 131a is sleeved on the pipe body 110, and the heating element 132 is located in the interior of the shell 131b.

[0037] By providing the sleeve portion 131a, the protective cover 131 is sleeved on the pipe body 110, so as to ensure that the protective cover 131 and the pipe body 110 are stably connected and the heat of the heating element 132 can be efficiently transferred to the pipe body 110. In addition, the sleeve portion 131a can play a certain heat preservation role to reduce heat loss. Optionally, the shell 131b and the sleeve portion 131a can be in an integral molding structure. Optionally, the material of the protective cover 131 can be plastic.

[0038] Further, the heating element 132 is connected with a power supply pin for connecting a power supply.

[0039] Optionally, the power supply pin includes a positive pin and a negative pin, and the positive pin and the negative pin are electrically connected with the positive and negative poles of the power supply respectively to form a power supply circuit. Optionally, a relay 800 is further arranged on the power supply circuit, and the power supply circuit can be cut off by cutting off the relay 800.

[0040] Referring to Figure 2 The technical scheme further provides an engine assembly, which comprises the oil-gas separator 200, the engine 300 and the oil-gas separator gas outlet heating device 100, the oil-gas separator 200 comprises a gas outlet pipe 210 and a gas inlet pipe 220, the pipe body 110 and the gas outlet pipe 210 are communicated, the gas inlet pipe 220 and the engine 300 are communicated, and the inside of the engine 300 is provided with a cooling water channel 310, and the heating inlet water pipe 121 and the heating outlet water pipe 122 are communicated with the cooling water channel 310 respectively.

[0041] In the above engine assembly, the oil-gas separator 200 is communicated with the engine 300 through the gas inlet pipe 220, the oil-gas discharged by the engine 300 enters the oil-gas separator 200, the separated gas is discharged from the gas outlet pipe 210 and enters the pipe body 110 of the oil-gas separator gas outlet heating device 100. The oil-gas separator gas outlet heating device 100 is communicated with the cooling water channel 310 through the heating inlet water pipe 121 and the heating outlet water pipe 122, so that the cooling liquid in the cooling water channel 310 is introduced into the heating cavity 111, the cooling liquid and the gas discharged from the gas outlet pipe 210 are heat-exchanged, so that the icing of the gas outlet pipe 210 can be effectively prevented. In addition, when the cooling liquid cannot provide heat for the gas, the pipe body 110 is heated by the heating assembly 130, and the same effect of preventing icing can be achieved. According to the needs of use, the gas is heated by the cooling liquid and the heating assembly 130, so that the use time of the heating assembly 130 can be reduced, and the energy consumption and the device loss can be reduced.

[0042] Further, the gas outlet pipe 210 is provided with a heat preservation layer.

[0043] Optionally, the heat preservation layer tightly covers the outer periphery of the gas outlet pipe 210, so as to prevent the icing of the gas outlet pipe 210 caused by the excessively low temperature of the external environment. Optionally, the heat preservation layer can be bound to the outside of the gas outlet pipe 210 by a strap.

[0044] Further, the heat preservation layer can be a rubber piece.

[0045] Illustratively, the heat preservation layer can adopt a rubber foaming material. The rubber foaming is mainly based on pure natural rubber, cooperates with other raw materials, adds specific foaming agents, and obtains products after hot pressing. Of course, in other embodiments, the heat preservation layer can also adopt foam or other materials.

[0046] Further, the cooling water path 310 is connected with a cooling water path 310 outlet pipe, and a thermostat 400 is arranged on the cooling water path 310 outlet pipe. When the thermostat 400 is opened, the heating inlet pipe 121 and the cooling water path 310 outlet pipe are communicated.

[0047] The thermostat 400 is a valve for controlling the flow path of the cooling liquid by sensing the temperature of the cooling liquid. When the temperature of the cooling liquid is lower than a predetermined value, the cooling liquid is returned to the engine 300 by the water pump, and the cooling liquid is circulated in the inside of the cooling water path 310. When the temperature of the cooling liquid reaches the predetermined value, the thermostat 400 is opened, and at this time, the cooling liquid can enter the heating cavity 111 in sequence through the cooling water path 310 outlet pipe and the heating inlet pipe 121. Optionally, the thermostat 400 is a wax thermostat 400. When the temperature of the cooling liquid is lower than the predetermined value, the refined paraffin in the temperature sensing body of the thermostat 400 is in a solid state, and the thermostat 400 is in a closed state. When the temperature of the cooling liquid reaches the predetermined value, the paraffin begins to melt and gradually changes into a liquid, and the thermostat 400 is opened.

[0048] Further, a cooling liquid temperature detection unit 500 is arranged on the cooling water path 310 outlet pipe, and a temperature sensor is arranged upstream of the thermostat 400. The cooling liquid temperature detection unit 500 is used for detecting the temperature of the cooling liquid, and the heating assembly 130 is configured to be started or stopped according to the temperature of the cooling liquid.

[0049] The cooling liquid temperature detection unit 500 is used for detecting the temperature of the cooling liquid in the heating outlet pipe 122. When the temperature of the cooling liquid is greater than a predetermined value, it indicates that the temperature of the cooling liquid is high, the thermostat 400 is in an open state, and the cooling liquid can enter the heating cavity 111 to heat the gas. When the temperature of the cooling liquid is less than the predetermined value, the thermostat 400 is in a closed state, and the heating element 132 is heated according to the use requirement. In an embodiment, the temperature of the cooling liquid is less than the predetermined value, but the temperature of the external environment is greater than zero degrees, at this time, the gas outlet pipe 210 will not be frozen, and the heating assembly 130 does not need to be started. When the temperature of the cooling liquid is less than the predetermined value, and the temperature of the external environment is less than or equal to zero degrees, the heating assembly 130 is started, so as to prevent the temperature of the gas from being too low to cause the gas outlet pipe 210 to be frozen. Optionally, the predetermined value can be 80-85°C. Exemplarily, the predetermined value can be 80°C, 81°C, 83°C or 85°C, etc.

[0050] Further, the engine assembly in the technical solution further comprises a controller 700, and the cooling liquid temperature detection unit 500 and the relay 800 are electrically connected with the controller 700. The controller 700 is further connected with an external environment temperature detection unit. The cooling liquid temperature detection unit 500 and the external environment temperature detection unit send the measurement results to the controller 700, and the controller 700 controls the relay 800 to be connected or disconnected according to the cooling liquid temperature and the external environment temperature. Optionally, the controller 700 is an Electronic Control Unit (ECU). The operation logic of the controller 700 is mature prior art in the field, and will not be described here.

[0051] Further, the cooling water circuit 310 outflow pipe is communicated with a radiator 600, the radiator 600 is communicated with the cooling water circuit 310 through a cooling water circuit inflow pipe 312, and the water inlet end of the heating inflow pipe 121 is located between the radiator 600 and the thermostat 400.

[0052] The radiator 600 can exchange heat with the cooling liquid to reduce the temperature of the cooling liquid. In the case that the thermostat 400 is opened (the cooling liquid temperature obtained by the cooling liquid temperature detection unit 500 is greater than a predetermined value), the cooling liquid starts from the cooling water circuit 310 outflow pipe, flows through the thermostat 400, and then flows back to the cooling water circuit 310 through the heating inflow pipe 121, the heating cavity 111 and the heating outflow pipe 122 to realize the heating function of the exhaust pipe 210 through the cooling liquid; and flows back to the cooling water circuit 310 through the radiator 600 and the cooling water circuit inflow pipe 312 to realize the cooling function of the cooling liquid through the radiator 600.

[0053] Further, Figure 3 The control principle diagram of the engine assembly according to the embodiment of the utility model is schematically shown. Referring to Figure 3 The control principle of the engine assembly provided by the technical solution will be described below:

[0054] The vehicle is ignited and started, and the engine 300 normally operates;

[0055] The ECU monitors the cooling liquid temperature through the water temperature detection unit;

[0056] When the cooling liquid temperature is greater than a predetermined value, the thermostat 400 is opened, the cooling liquid flows through the thermostat 400 after flowing out of the cooling water circuit 310 outflow pipe, flows back to the cooling water circuit 310 through the heating inflow pipe 121 into the heating cavity 111 to heat the exhaust pipe 210, and then flows back to the cooling water circuit 310 from the heating outflow pipe 122; and flows back to the cooling water circuit 310 through the radiator 600 and the cooling water circuit inflow pipe 312;

[0057] When the temperature of the cooling liquid is less than a predetermined value, the ECU monitors the ambient temperature through the ambient temperature detection unit, if the ambient temperature is greater than 0℃, the heating assembly 130 does not need to work, if the ambient temperature is less than 0℃, the heating assembly 130 works to heat the air outlet pipe 210.

[0058] The above merely provides a preferred embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which 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 gas outlet heating device for an oil-gas separator, characterized in that, include: Pipe body (110), one end of which is used to connect with the gas outlet pipe (210) of the oil-gas separator (200), and the other end of which is used to connect with the external environment; A sleeve (120) is sleeved on the pipe body (110). The inner wall of the sleeve (120) and the outer wall of the pipe body (110) form a heating chamber (111). The sleeve (120) is connected to a heating water inlet pipe (121) and a heating water outlet pipe (122). The heating water inlet pipe (121) and the heating water outlet pipe (122) are used to connect the heating chamber (111) and the cooling water passage (310) inside the engine (300) to form a loop. A heating assembly (130) is connected to the tube body (110) and is used to heat the tube body (110).

2. The oil-gas separator outlet heating device according to claim 1, characterized in that, The heating assembly (130) includes a protective cover (131) and a heating element (132). The protective cover (131) is connected to the tube body (110), and the heating element (132) is located inside the protective cover (131) and connected to the tube body (110).

3. The oil-gas separator outlet heating device according to claim 2, characterized in that, The protective cover (131) includes a sleeve (131a) and a housing (131b). The housing (131b) is connected to the sleeve (131a). The sleeve (131a) is sleeved on the tube (110). The heating element (132) is located inside the housing (131b).

4. The oil-gas separator outlet heating device according to claim 2, characterized in that, The heating element (132) is connected to a power supply pin, which is used to connect to a power source.

5. An engine assembly, characterized in that, The device includes an oil-gas separator (200), an engine (300), and an oil-gas separator outlet heating device according to any one of claims 1-4. The oil-gas separator (200) includes an outlet pipe (210) and an inlet pipe (220). The pipe body (110) is connected to the outlet pipe (210), and the inlet pipe (220) is connected to the engine (300). The engine (300) has a cooling water passage (310) inside, and the heating water inlet pipe (121) and the heating water outlet pipe (122) are respectively connected to the cooling water passage (310).

6. The engine assembly according to claim 5, characterized in that, The air outlet pipe (210) is fitted with an insulation layer.

7. The engine assembly according to claim 6, characterized in that, The insulation layer is made of rubber.

8. The engine assembly according to claim 5, characterized in that, The cooling water passage (310) is connected to a cooling water outlet pipe (311), and a thermostat (400) is provided on the cooling water outlet pipe (311). The thermostat (400) is configured such that when the thermostat (400) is open, the heating water inlet pipe (121) and the cooling water outlet pipe (311) are connected.

9. The engine assembly according to claim 8, characterized in that, A coolant temperature detection unit (500) is provided on the cooling water outlet pipe (311). The coolant temperature detection unit (500) is located upstream of the thermostat (400). The coolant temperature detection unit (500) is used to detect the coolant temperature. The heating component (130) is configured to start or stop according to the coolant temperature.

10. The engine assembly according to claim 8, characterized in that, The cooling water outlet pipe (311) is connected to the radiator (600), and the radiator (600) is connected to the cooling water circuit (310) through the cooling water inlet pipe (312). The inlet end of the heating water inlet pipe (121) is located between the radiator (600) and the thermostat (400).

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