CN214836787U - Ice-forming box for crankcase ventilation pipe - Google Patents

Abstract

The utility model provides a crankcase ventilation pipe icing box, it is located empty intercommunication position that filters out trachea and crankcase ventilation pipe. The crankcase ventilation pipe icing box comprises a silencing cavity and an icing cavity; the silencing cavity is arranged on the main pipe section of the air filtering air pipe and is formed by surrounding of the inner pipe wall and the outer pipe wall of the main pipe section; the icing chamber is formed at the connecting part of the air outlet pipe section and the main pipe section of the air filtering air pipe and comprises a first chamber and a second chamber which are communicated with each other; the first chamber is separated from the silencing cavity and communicated with a crankcase ventilation pipe; the second chamber is formed by the enclosure of the shell and part of the pipe wall of the air outlet pipe section and is communicated with the air filtering pipe. The utility model discloses a crankcase ventilation pipe icing box does benefit to under limited cabin space condition, and the effective volume of maximize icing box to reduce the crankcase ventilation pipe because of the freezing possibility that is blockked up of condensation.

Description

Ice-forming box for crankcase ventilation pipe

Technical Field

The utility model relates to the technical field of auto-parts, in particular to crankcase ventilation pipe icing box.

Background

In winter in cold areas, the problem of vehicle icing is frequent when the temperature often reaches about-30 ℃; among them, the problem of icing of engine crankcase ventilation ducts is the most serious. When the engine is in the operation process, hot mixed oil gas in the CRANKCASE flows to PCV (POSITIVE CRANKCASE VENTILATION) and an air intake system through the CRANKCASE, the hot mixed oil gas meets low-temperature airflow and is condensed and frozen, so that a VENTILATION pipe of the CRANKCASE is blocked, gas in the CRANKCASE of the engine cannot be discharged, the pressure of the CRANKCASE is increased due to long-time freezing, oil seal is dropped to cause oil leakage, the engine is damaged, and the vehicle cannot normally run.

At present, most vehicles on the market generally use the scheme of the external ice forming box for the icing problem of a ventilation pipe of a crankcase, and the scheme needs the whole vehicle cabin to provide larger layout space, so that the volume of the silencer on the air filtering pipe can be sacrificed, because the available space of the environment of the whole vehicle cabin is smaller, and the volume of the ice forming box is reduced by considering the space requirements of the silencer and other components. Therefore, the performance of the icing box is influenced inevitably, the icing box cannot meet the requirement of icing treatment of the crankcase ventilation pipe, and the possibility that the crankcase ventilation pipe is blocked due to icing caused by condensation is increased.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a crankcase ventilation pipe icing box to do benefit to under limited cabin space condition, the effective volume of the icing box of maximize, thereby reduce the crankcase ventilation pipe because of the condensation freezes the possibility that is blockked up.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

an icing box of a crankcase ventilation pipe is arranged at the communication part of an air filtering air pipe and the crankcase ventilation pipe, and comprises a silencing cavity and an icing cavity; wherein:

the silencing cavity is arranged on the main pipe section of the air filtering air pipe and is formed by the surrounding of the inner pipe wall and the outer pipe wall of the main pipe section;

the icing cavity is formed at the position where the air outlet pipe section of the air filtering air pipe is connected with the main pipe section, and comprises a first cavity and a second cavity which are communicated with each other;

the first chamber is separated from the silencing chamber and communicated with the crankcase ventilation pipe;

the second chamber is formed by the enclosure of the shell and part of the pipe wall of the air outlet pipe section and is communicated with the air filtering air pipe.

Furthermore, the connection part of the air outlet pipe section and the main pipe section is bent, and the icing chamber is arranged on the inner side of the bent part.

Further, the first chamber is arranged around the axis of the main pipe section, and the angle range of the first chamber is within 180 degrees.

Further, the width of the shell is consistent with the outer diameter of the air outlet pipe section.

Furthermore, a plurality of silencing partition plates are arranged in the silencing cavity; the silencing partition plates are arranged at intervals along the gas flow direction in the main pipe section; the first chamber is located downstream of the sound-deadening partition at the rear of the sound-deadening chamber.

Furthermore, silencing holes are formed in the inner pipe walls on the two sides of the silencing partition plate; the first chamber is in communication with the air filter gas duct via the muffler orifice downstream of the muffler partition.

Further, the first chamber and the second chamber are arranged in a staggered manner up and down; the bottom of the second chamber is located below the first chamber.

Furthermore, a baffle plate for separating the first chamber from the second chamber is arranged in the freezing chamber, the baffle plate comprises a first baffle plate arranged on the inner pipe wall and a second baffle plate connected between the first baffle plate and the shell, and a communicating part for communicating the first chamber and the second chamber is arranged on the second baffle plate.

Further, the air filtering air pipe is formed by buckling a first pipe body and a second pipe body; the icing chamber includes two portions disposed on the first tube and the second tube.

Furthermore, a crankcase ventilation air inlet is formed in one of the first pipe body and the second pipe body; the crankcase ventilation pipe is communicated with the air filtering air pipe through the crankcase ventilation air inlet.

Compared with the prior art, the utility model discloses following advantage has:

crankcase ventilation pipe icing box, divide into first cavity and second cavity with the icing cavity of icing box, first cavity is separated out from the amortization chamber tail end at the position that meets of pipeline section and main pipe section of giving vent to anger, the second cavity then forms with the help of the pipe wall of pipeline section of giving vent to anger and the shell enclosure that increases, two cavity intercommunications set up, jointly deal with the ice that the condensation becomes temporarily, thereby the passageway that the trachea was filtered out to crankcase ventilation pipe flow direction sky has been ensured, pipeline section and main pipe section of giving vent to anger meet the position and borrow the afterbody space in amortization chamber and the exterior space at the position that meets ingeniously, thereby under the finite space condition, the effective volume of icing box has been increased, do benefit to and reduce the probability that the crankcase ventilation pipe freezes and is blockked up because of the condensation.

In addition, the portion of meeting of giving vent to anger pipeline section and main pipe section is bent the setting, not only is fit for the installation that the pipeline section of giving vent to anger is connected with the engine and arranges the requirement, can form a space that can fully utilize in the inboard of the position of bending moreover to set up the second cavity in a manner of making a sense of force, thereby do benefit to the whole effective volume that increases the chamber that freezes.

Drawings

The accompanying drawings, which form a part of the present disclosure, are provided to provide a further understanding of the present disclosure, and the exemplary embodiments and descriptions thereof are provided to explain the present disclosure, wherein the related terms in the front, back, up, down, and the like are only used to represent relative positional relationships, and do not constitute an undue limitation of the present disclosure. In the drawings:

fig. 1 is a schematic view of an overall structure of an air filtering air pipe provided with a crankcase ventilation pipe icing box according to an embodiment of the present invention;

fig. 2 is a schematic view of an internal structure of the air filtering air pipe according to the embodiment of the present invention, after the second pipe body is removed, at a viewing angle B shown in fig. 1;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 1;

description of reference numerals:

1. air filtering out the air pipe; 10. a main pipe section; 100. an inner pipe wall; 101. an air outlet of the air filter; 102. an air outlet pipe section; 11. a sound-deadening chamber; 110. an outer tube wall; 111. a sound-deadening partition plate; 112. a silencing hole; 1a, a first pipe body; 1b, a second pipe body; 10a, a silencer;

2. a crankcase ventilation duct; 200. a crankcase ventilation air intake;

3. an icing chamber; 30. a first chamber; 31. a second chamber; 300. a housing; 301. a partition plate; 32. a baffle plate; 321. a first baffle plate; 322. a second baffle; 323. a communicating portion; 33. and a liquid discharge port.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the appearances of the terms first, second, etc. in the figures are also for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless expressly limited otherwise. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The embodiment relates to an icing box for a crankcase ventilation pipe, which is beneficial to increasing the effective volume of the icing box as much as possible under the condition of limited cabin space, thereby reducing the possibility that the crankcase ventilation pipe is blocked due to condensation and icing.

The crankcase ventilation pipe icing box is arranged at the communication part of the air filtering air pipe and the crankcase ventilation pipe and comprises a silencing cavity and an icing cavity.

The silencing cavity is arranged on the main pipe section of the air filtering air pipe and is formed by surrounding of an inner pipe wall and an outer pipe wall of the main pipe section. The icing cavity is formed at the part where the air outlet pipe section and the main pipe section of the air filtering air pipe are connected, and comprises a first cavity and a second cavity which are communicated with each other. The first chamber is separated from the silencing cavity and communicated with a crankcase ventilation pipe; the second chamber is formed by the enclosure of the shell and part of the pipe wall of the air outlet pipe section and is communicated with the air filtering pipe.

Based on the above design concept, an exemplary structure of the air filter gas pipe 1 of the present embodiment is shown in fig. 1 and 2, and the crankcase ventilation pipe icing box of the present embodiment is disposed on the air filter gas pipe 1.

It explains in advance that, in order to facilitate the processing structure of the air filtering air pipe 1, the air filtering air pipe 1 preferably adopts a split structure, and specifically includes a first pipe body 1a and a second pipe body 1b, the air filtering air pipe 1 is formed by buckling the first pipe body 1a and the second pipe body 1b, and after the two are buckled in place, the two can be fixedly connected as a whole by fasteners such as screws.

As shown in fig. 1, the air filter gas tube 1 may be bisected by a plane established by the axes of the main tube segment 10 and the outlet tube segment 102; when the bending condition exists at one end of the air filter air outlet inlet 101 of the air filtering air pipe 1, the bending treatment can be performed on the dividing plane so as to keep the integrity of the pipeline at the air filter air outlet inlet 101. The air filtering air pipe 1 is of a split buckling structure, the arrangement of the sound attenuation cavity 11 and the icing cavity 3 in the air filtering air pipe 1 is facilitated, and good conditions are provided for the disassembly and cleaning of the icing cavity 3.

Fig. 2 shows a schematic view of the internal structure of the filtered air tube 1 after the second tube 1b has been removed. The internal structure of the silencer 10a arranged on the main pipe section 10 can be seen. The silencer 10a includes a silencing chamber 11 formed by the surrounding of an inner pipe wall 100 and an outer pipe wall 110 of the main pipe section 10; the freezing chamber 3 is formed at a portion where the outlet pipe segment 102 of the air filtering air pipe 1 is connected with the main pipe segment 10, and specifically includes a first chamber 30 and a second chamber 31 which are communicated with each other. Wherein first chamber 30 is partitioned from the rear of sound-deadening chamber 11, and second chamber 31 is formed by outer shell 300 and a partial pipe wall circumference of outlet pipe segment 102.

As shown in fig. 3, the first chamber 30 communicates with the crankcase ventilation duct 2, and the second chamber 31 communicates with the air filter duct 1; specifically, second chamber 31 is disposed in communication with the interior of outlet leg 102.

Based on the split structure of the air filtering air pipe 1, the freezing chamber 3 is preferably configured in two parts, for example, the two parts of the freezing chamber 3 are symmetrically distributed on the first pipe 1a and the second pipe 1b, the second chamber 31 and the second chamber 31 are equally distributed on the first pipe 1a and the second pipe 1b, and when the first pipe 1a and the second pipe 1b are fastened in place, the second chamber 31 and the second chamber 31 form a sealed chamber and form the integral freezing chamber 3. Meanwhile, a crankcase ventilation inlet 200 is formed in one of the first pipe body 1a and the second pipe body 1b, and the crankcase ventilation pipe 2 is communicated with the air filter air pipe 1 through the crankcase ventilation inlet 200. This facilitates the arrangement of the crankcase ventilation air inlet 200 and also the attachment of the crankcase ventilation duct 2 to the filtered air duct 1. For example, in the present embodiment, the crankcase ventilation duct 2 is mounted on the second pipe body 1b, and the air and gas in the crankcase ventilation duct 2 is introduced into the first chamber 30 side through the crankcase ventilation inlet port 200.

As shown in fig. 2, the connection portion of the outlet pipe segment 102 and the main pipe segment 10 is bent, and the icing chamber 3 of this embodiment is disposed inside the bent portion. Thus, the installation and arrangement requirements of the connection of the outlet pipe section 102 and the engine are met, a fully utilized space can be formed on the inner side of the bent part, and the second chamber 31 is arranged in a manner of being guided by force, so that the whole effective volume of the icing chamber 3 is increased.

In this arrangement, the first chamber 30 is preferably arranged around the axis of the main tube segment 10, and the angular range of the first chamber 30 is controlled to be within 180 °. For example, it may be set at 180 °, i.e., on the bent side of outlet pipe segment 102 of sound-deadening chamber 11, and above outlet pipe segment 102. This kind of design, the intercommunication setting between the first cavity 30 of being convenient for and the second cavity 31 to make the inner space wholeness of freezing cavity 3 higher, do benefit to the condensation of hot-mixed oil gas in it and freeze and keep temporarily, and keep freezing cavity 3 and communicate the reliability of conducting between crankcase ventilation pipe 2 and air filtering air pipe 1.

Also, the width of shell 300 is preferably designed to conform to the outer diameter dimensions of outlet leg 102. As shown in fig. 3 in conjunction with fig. 2, second chamber 31 is located directly above the root of gas outlet pipe segment 102, having the radial dimension of gas outlet pipe segment 102 as the width dimension and extending upward to communicate with first chamber 30. Setting the width of the outer shell 300 to a size consistent with the outer diameter of the outlet pipe segment 102 makes the outer shape of the second chamber 31 regular without increasing the outer shape of the air filtering gas pipe 1 due to the setting of the second chamber 31.

In the above-described arrangement, the first chamber 30 and the second chamber 31 may be arranged in a staggered manner, i.e., the top of the second chamber 31 is lower than the bottom of the first chamber 30, and the bottom of the second chamber 31 is located below the first chamber 30. The two chambers are arranged in a staggered manner up and down, so that oil gas condensate entering from the crankcase ventilation pipe 2 can be conveniently subjected to split-flow treatment, and ice is temporarily stored in the two chambers respectively; by arranging the liquid outlet 33 on the pipe wall of the air outlet pipe section 102, the oil liquid ablated in the second chamber 31 and the first chamber 30 can conveniently flow into the air filtering air pipe 1 along with the airflow entering the crankcase ventilation pipe 2.

In order to further exploit the two chamber volumes, a baffle 32 for separating the first chamber 30 and the second chamber 31 is provided in the icing chamber 3. The baffle 32 can be arranged in a plurality of ways, in this embodiment, the baffle 32 includes a first baffle 321 disposed on the inner pipe wall 100, and a second baffle 322 connected between the first baffle 321 and the outer shell 300; the second shutter 322 is provided with a communication portion 323 that communicates the first chamber 30 and the second chamber 31, and the communication portion 323 may be a notch, a through hole, or the like. Through the setting of baffle 32, form by first baffle 321 and intercept the barrage between first cavity 30 and second cavity 31, in the intercommunication portion 323 on the second baffle 322 drainage the partial condensate in first cavity 30 to second cavity 31 to the good reposition of redundant personnel of the oil gas condensate that has got into by crankcase ventilation pipe 2 has been realized.

In the present embodiment, a plurality of silencing partition boards 111 are disposed in the silencing cavity 11, and each silencing partition board 111 is disposed at intervals along the gas flow direction in the main pipe section 10, wherein the first chamber 30 is located downstream of the silencing partition board 111 at the tail of the silencing cavity 11, and by means of the silencing partition board 111 at the tail of the silencing cavity 11, the construction of the first chamber 30 can be conveniently completed by additionally providing the necessary partition board 301 in the silencing cavity 11, and the adjacent arrangement of the second chamber 31 and the first chamber 30 is facilitated.

The muffling holes 112 are formed in the inner pipe walls 100 on both sides of the muffling partition 111, depending on the internal structure of the muffling chamber 11. Meanwhile, in addition to the liquid discharge port 33 for communicating the freezing chamber 3 and the air filtering gas pipe 1 provided in the second chamber 31, a liquid discharge port may be provided in the first chamber 30 to communicate the first chamber 30 and the air filtering gas pipe 1.

At this time, since the muffling hole 112 located on the downstream side of the muffling partition 111 at the tail is located in the first chamber 30, the function of the liquid discharge port of the first chamber 30 can be realized, that is, the first chamber 30 can communicate with the air filter gas pipe 1 through the muffling hole 112 located downstream of the muffling partition 111. Therefore, the air entering from the crankcase ventilation pipe 2 can conveniently enter the air filtering air pipe 1, and the ice in the first cavity 30 can conveniently enter the air filtering air pipe 1 along with the air after being melted.

The crankcase ventilation pipe icing box described in this embodiment divides the icing chamber 3 of the icing box into a first chamber 30 and a second chamber 31, the first chamber 30 is separated from the tail end of the silencing chamber 11 at the connection part of the air outlet pipe section 102 and the main pipe section 10, the second chamber 31 is formed by the pipe wall of the air outlet pipe section 102 and the added shell 300, the two chambers are communicated and arranged, and the ice formed by condensation is temporarily treated together, so that the passage of the crankcase ventilation pipe 2 flowing to the air filtering air pipe 1 is ensured, the tail space of the silencing chamber 11 and the external space of the connection part are skillfully used at the connection part of the air outlet pipe section 102 and the main pipe section 10, the effective volume of the icing box is increased under the condition of limited space, and the probability that the crankcase ventilation pipe is blocked due to condensation icing is favorably reduced.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An icing box for a crankcase ventilation pipe is arranged at the communication part of an air filtering air pipe (1) and a crankcase ventilation pipe (2), and is characterized by comprising a silencing cavity (11) and an icing cavity (3); wherein:

the silencing cavity (11) is arranged on a main pipe section (10) of the air filtering air pipe (1) and is formed by enclosing an inner pipe wall (100) and an outer pipe wall (110) of the main pipe section (10);

the icing chamber (3) is formed at the connecting part of the air outlet pipe section (102) of the air filtering air pipe (1) and the main pipe section (10), and the icing chamber (3) comprises a first chamber (30) and a second chamber (31) which are communicated with each other;

the first chamber (30) is isolated from the muffling chamber (11) and is communicated with the crankcase ventilation pipe (2);

the second chamber (31) is formed by the outer shell (300) and a part of the wall of the outlet pipe section (102) and is communicated with the air filtering gas pipe (1).

2. The crankcase ventilation tube icing cassette of claim 1, wherein:

the connection part of the gas outlet pipe section (102) and the main pipe section (10) is bent;

the icing chamber (3) is arranged on the inner side of the bent part.

3. The crankcase ventilation tube icing cassette of claim 1, wherein:

the first chamber (30) is arranged around the axis of the main pipe section (10) and distributed within an angle range of 180 degrees.

4. The crankcase ventilation tube icing cassette of claim 1, wherein: the width of the shell (300) is consistent with the outer diameter of the outlet pipe segment (102).

5. The crankcase ventilation tube icing cassette of claim 1, wherein:

a plurality of silencing partition plates (111) are arranged in the silencing cavity (11);

the silencing partition plates (111) are arranged at intervals along the gas flow direction in the main pipe section (10);

the first chamber (30) is located downstream of the silencing baffle (111) at the rear of the silencing chamber (11).

6. The crankcase ventilation tube icing cassette of claim 5, wherein:

silencing holes (112) are formed in the inner pipe wall (100) on two sides of the silencing partition plate (111);

the first chamber (30) communicates with the air filter gas pipe (1) via the muffling orifice (112) located downstream of the muffling baffle (111).

7. The crankcase ventilation tube icing cassette of claim 1, wherein:

the first chamber (30) and the second chamber (31) are arranged up and down in a staggered manner;

the bottom of the second chamber (31) is located below the first chamber (30).

8. The crankcase ventilation tube icing cassette of claim 1, wherein:

a baffle plate (32) for separating the first chamber (30) and the second chamber (31) is arranged in the icing chamber (3);

the baffle (32) comprises a first baffle (321) arranged on the inner pipe wall (100) and a second baffle (322) connected between the first baffle (321) and the outer shell (300);

the second baffle (322) is provided with a communicating part (323) communicating the first chamber (30) and the second chamber (31).

9. A crankcase ventilation tube icing cassette according to any one of claims 1-8, wherein:

the air filtering air pipe (1) is formed by buckling a first pipe body (1a) and a second pipe body (1 b);

the icing chamber (3) comprises two parts arranged on the first tube (1a) and the second tube (1 b).

10. The crankcase ventilation tube icing cassette of claim 9, wherein:

a crankcase ventilation air inlet (200) is formed in one of the first pipe body (1a) and the second pipe body (1 b);

the crankcase ventilation pipe (2) is communicated with the air filtering air pipe (1) through the crankcase ventilation air inlet (200).

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