CN209925051U

CN209925051U - Crankcase ventilation structure

Info

Publication number: CN209925051U
Application number: CN201920618640.7U
Authority: CN
Inventors: 李元伟; 李倩倩; 陈生超; 赵艳涛
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-01-10
Anticipated expiration: 2029-04-30

Abstract

The utility model relates to a crankcase ventilation structure, including compressor housing, be equipped with inlet channel on the compressor housing, be equipped with on the compressor housing and store ice-melt portion, be equipped with in the ice-melt portion and store ice-melt chamber, be equipped with on the ice-melt portion and all be linked together with ice-melt chamber air inlet and gas outlet, the air inlet is used for being linked together with the gas vent of crankcase, and the gas outlet is located inlet channel, and the gas outlet is linked together with inlet channel. The utility model has the advantages of with low costs and can reduce or even avoid the condensation ice-cube to pass through, can satisfy crankcase ventilation demand, can reduce again and avoid the compressor blade to be damaged by the ice-cube even.

Description

Crankcase ventilation structure

Technical Field

The utility model relates to an automobile engine, concretely relates to crankcase ventilation structure.

Background

At present, a crankshaft ventilation pipe is usually connected to an air inlet pipe of an engine, so that the environment pollution caused by the fact that waste gas in a crankcase is directly discharged into the atmosphere is avoided. As shown in fig. 1, in the crankcase ventilation structure in the prior art, a crankshaft ventilation outlet pipe 3 is connected to a side wall of an engine inlet pipe 1, and the engine inlet pipe 1 is connected to an air inlet of a compressor housing 2. Because the crankshaft ventilation air outlet pipe 3 is internally provided with a large amount of water vapor, the crankshaft ventilation air outlet pipe is easy to crystallize to form ice blocks after meeting cold air in the engine air inlet pipe 1 in an extremely low temperature environment, and once the ice blocks enter the compressor shell 2, the ice blocks can break blades in the compressor shell 2, so that the compressor is damaged. In order to solve the problems, the prior art mainly prevents icing, and mainly has two solutions of melting ice by electric heating and relieving icing by expanding the pipe diameter. The electric heating scheme is characterized in that an electric heater is additionally arranged in an icing easy-to-occur area to carry out local temperature rise so as to prevent icing, and the electric heating scheme has the defect of higher cost; the scheme for relieving icing by enlarging the pipe diameter is characterized in that the icing relieving effect is achieved by enlarging the inner diameter of a pipeline in an icing-prone area, however, the pipe diameter enlargement can cause more problems such as interference, icing can only be relieved by enlarging the pipe diameter, and the risk that blades of the compressor are damaged by ice blocks still exists.

Disclosure of Invention

The utility model aims at providing a crankcase ventilation structure can satisfy crankcase ventilation demand, can reduce the blade that avoids the compressor even again and be damaged by the ice-cube.

A crankcase ventilation structure, including compressor housing, be equipped with inlet channel on the compressor housing, be equipped with ice-storage ice-melt portion on the compressor housing, be equipped with ice-storage ice-melt chamber in the ice-storage ice-melt portion, ice-storage ice-melt portion be equipped with all with air inlet and gas outlet that ice-storage ice-melt chamber is linked together, the air inlet is used for being linked together with the gas vent of crankcase, the gas outlet is located in the inlet channel, just the gas outlet with inlet channel is linked together.

The crankshaft ventilation and air outlet pipe is fixedly connected to the ice storage and ice melting part, the air outlet end of the crankshaft ventilation and air outlet pipe is communicated with the air inlet, and the air inlet end of the crankshaft ventilation and air outlet pipe is communicated with the air outlet of the crankcase.

Further, a pipe joint used for connecting the crankshaft ventilation and air outlet pipe is arranged on the ice storage and melting part, and an inlet of the pipe joint is the air inlet.

Further, be equipped with the polylith baffle in the ice storage ice-melt intracavity, the polylith the baffle is followed the air inlet extremely the gas outlet direction sets gradually, the polylith all be equipped with the blow vent on the baffle, adjacent two the setting of staggering of blow vent on the baffle.

Further, the ice storage and melting part and the compressor shell are integrally cast and formed.

Further, the ice storage and melting part and the compressor shell are both made of aluminum.

The utility model has the advantages of with low costs and can reduce or even avoid the condensation ice-cube to pass through, can satisfy crankcase ventilation demand, can reduce again and avoid the compressor blade to be damaged by the ice-cube even.

Drawings

FIG. 1 is a schematic structural view of a crankcase ventilation structure shown in the embodiment;

fig. 2 is a schematic structural view of the compressor housing of fig. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a schematic view of a prior art crankcase ventilation structure described in the background.

In the figure: 1, an engine air inlet pipe; 2-compressor housing; 3-crankshaft ventilation outlet pipe; 4-ice storage and melting part; 5-an air inlet channel; 6-an air inlet; 7-ice storage and ice melting cavity; 8, an air outlet; 9-a partition board; 10-vent.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1-3, the crankcase ventilation structure includes a compressor housing 2, an air inlet passage 5 is provided on the compressor housing 2, the air inlet passage 5 is communicated with an engine air inlet pipe 1 during actual use, an ice storage and melting portion 4 is provided on the compressor housing 2, an ice storage and melting chamber 7 is provided in the ice storage and melting portion 4, an air inlet 6 and an air outlet 8 both communicated with the ice storage and melting chamber 7 are provided on the ice storage and melting portion 4, the air outlet 8 is located in the air inlet passage 5, the air outlet 8 is communicated with the air inlet passage 5, and the air inlet 6 is used for being communicated with an air outlet of the crankcase.

In this embodiment, the ice-ice melting device further comprises a crankshaft ventilation and air outlet pipe 3 fixedly connected to the ice-ice melting part 4, an air outlet end of the crankshaft ventilation and air outlet pipe 3 is communicated with an air inlet 6, and an air inlet end of the crankshaft ventilation and air outlet pipe 3 is communicated with an air outlet of the crankcase. The crankshaft ventilation air outlet pipe 3 can be a rubber pipe.

In this embodiment, the ice storage and melting part 4 is provided with a pipe joint for connecting the crankshaft ventilation and air outlet pipe 3, and the inlet of the pipe joint is the air inlet 6. The crankshaft ventilation air outlet pipe 3 can be tightly connected to the pipe joint through a rubber pipe clamp.

In this embodiment, two partition boards 9 are arranged in the ice storage and ice melting chamber 7, the two partition boards 9 are sequentially arranged along the direction from the air inlet 6 to the air outlet 8, the ice storage and ice melting chamber 7 is divided into three chambers by the two partition boards 9, vent holes 10 are arranged on the two partition boards 9, the vent holes 10 are communicated with the chambers on two sides of the partition boards 9, and the vent holes 10 on the two adjacent partition boards 9 are staggered to form a labyrinth-shaped flow passage in the ice storage and ice melting chamber 7.

In the embodiment, the ice storage and melting part 4 and the compressor shell 2 are integrally cast and formed, so that the ice storage and melting device has the advantages of low manufacturing difficulty and low cost.

In the embodiment, the ice storage and melting part 4 and the compressor housing 2 are both made of aluminum, so that the heat transfer performance is good, and the heat from the compressor housing 2 can be efficiently transferred.

By adopting the crankcase ventilation structure, the temperature in the ice storage and ice melting cavity can reach 100 ℃ by utilizing the heat generated by the compressor during operation, the continuous ice melting effect can be achieved, so that the passing of condensed ice blocks can be reduced or even avoided, the ice melting heat source is taken from the compressor shell body 2, and no heating equipment is required to be taken outside. A partition plate 9 is arranged in the ice storage and melting chamber 7, and the partition plate 9 can block condensed ice so as to achieve the ice storage effect and further reduce the possibility of the condensed ice passing through. The front of an air inlet 6 of the ice storage and melting cavity 7 is connected with a crankshaft ventilation and air outlet pipe 3, when the engine stops in a cold state, condensed ice blocks in the crankshaft ventilation and air outlet pipe 3 are intercepted by a partition plate 9 in the ice storage and melting cavity 7, and the condensed ice blocks are prevented from entering the compressor shell 2 to damage an impeller; when the engine is in hot operation, the ice storage and melting part 4 transfers the heat of the compressor shell 2, and the ice storage and melting cavity 7 is continuously in a high-temperature state, so that ice blocks stored in an earlier stage are melted, and hot air can prevent the formation of new ice blocks.

Claims

1. The utility model provides a crankcase ventilation structure which characterized in that: the compressor comprises a compressor shell, an air inlet channel is arranged on the compressor shell, an ice storage and ice melting part is arranged on the compressor shell, an ice storage and ice melting cavity is arranged in the ice storage and ice melting part, an air inlet and an air outlet which are communicated with the ice storage and ice melting cavity are arranged on the ice storage and ice melting part, the air inlet is communicated with an air outlet of a crankcase, the air outlet is located in the air inlet channel, and the air outlet is communicated with the air inlet channel.

2. The crankcase ventilation structure according to claim 1, wherein: the ice-storing and ice-melting device is characterized by further comprising a crankshaft ventilation and air-outlet pipe fixedly connected to the ice-storing and ice-melting part, wherein the air outlet end of the crankshaft ventilation and air-outlet pipe is communicated with the air inlet, and the air inlet end of the crankshaft ventilation and air-outlet pipe is communicated with an air outlet of the crankcase.

3. The crankcase ventilation structure according to claim 1, wherein: the ice storage and ice melting cavity is internally provided with a plurality of clapboards, the clapboards are arranged along the direction from the air inlet to the air outlet in sequence, the clapboards are provided with air vents, and the adjacent air vents on the clapboards are arranged in a staggered manner.

4. The crankcase ventilation structure according to claim 1, wherein: the ice storage and melting part and the compressor shell are integrally cast and formed.

5. The crankcase ventilation structure according to claim 1, wherein: the ice storage and melting part and the compressor shell are both made of aluminum.