CN116220937A

CN116220937A - Engine and generator set

Info

Publication number: CN116220937A
Application number: CN202310288032.5A
Authority: CN
Inventors: 丁锐; 吴中涛; 向松; 唐晨峰
Original assignee: Chongqing Rato Technology Co Ltd
Current assignee: Chongqing Rato Technology Co Ltd
Priority date: 2023-03-22
Filing date: 2023-03-22
Publication date: 2023-06-06

Abstract

The invention provides an engine, which comprises a cylinder body and a cylinder head, wherein an air guide through hole and an air exhaust cavity are arranged in the cylinder body, the air guide through hole extends towards one side of a crankcase of the cylinder body, the air exhaust cavity is arranged below the air guide through hole, the air exhaust cavity is communicated with the air guide through hole, and the air exhaust cavity is arranged in an open mode. The cylinder head is penetrated with an air inlet hole communicated with the air guide through hole. According to the engine, the air guide through hole and the exhaust cavity are formed in the cylinder body, the air inlet hole communicated with the air guide through hole is formed in the cylinder head, part of cooling air flow flowing to the cylinder head can be introduced into the air guide through hole through the air inlet hole, the cooling air flow can be finally discharged from the exhaust cavity, in the process, part of heat of the cylinder barrel of the cylinder body can be taken away by the cooling air flow, so that the cooling effect on the cylinder body is improved, and the heat dissipation capacity of the cylinder body is enhanced. The invention also provides a generator set, and by using the engine, the dynamic property and economical efficiency of the whole machine operation are improved.

Description

Engine and generator set

Technical Field

The invention relates to the technical field of engines, in particular to an engine and a generator set.

Background

The generator set is mechanical equipment for converting mechanical energy into electric energy, and has wide application in industrial and agricultural production and daily life. One of the most important parts in the generator set is an engine, and the engine is internally provided with a combustion chamber, an air inlet channel, an exhaust channel and other main structures, mixed fuel gas enters the combustion chamber from the air inlet channel, and is discharged from the exhaust channel after being burnt to do work, so that the engine continuously outputs power.

The cylinder barrel of the existing engine cylinder body can only dissipate heat through the radiating fins on the outer wall, the tappet cavity and the cylinder barrel are of an integrated structure, other cooling channels are not designed between the cylinder barrel and the tappet cavity, the whole structure of the cylinder body is complex, heat dissipation is not facilitated, and therefore the heat dissipation effect of the cylinder body is not ideal. At the same time, the air flow after cooling the cylinder head is directly blown to the muffler, and therefore, the use of this part of the cooling air flow is insufficient.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an engine and a generator set so as to improve the cooling effect on a cylinder body and enhance the heat dissipation capacity of the cylinder body.

In order to achieve the above object, one of the objects of the present invention is to provide an engine, comprising a cylinder block provided with a wind-guiding through hole and a wind-exhausting cavity, wherein the wind-guiding through hole extends towards one side of a crankcase of the cylinder block, the wind-exhausting cavity is arranged below the wind-guiding through hole, the wind-exhausting cavity is communicated with the wind-guiding through hole, and the wind-exhausting cavity is arranged in an open manner; and the cylinder head is arranged at the top of the cylinder body, and an air inlet hole communicated with the air guide through hole penetrates through the cylinder head.

Preferably, the two sides of the cylinder body are respectively provided with a windward side and a leeward side, and the exhaust cavity penetrates through the cylinder body along the direction of the windward side towards the leeward side.

Preferably, a wind shielding part is arranged at the bottom of the exhaust cavity near the windward side, and the wind shielding part extends towards one side of the cylinder head.

Preferably, an air inlet side and an air outlet side are respectively formed on two sides of the cylinder head, an air guide cavity is concavely formed on the side wall of the cylinder head between the air inlet side and the air outlet side, the air guide cavity penetrates through the cylinder head along the direction from the air inlet side to the air outlet side, and the air inlet Kong Kaishe is in the air guide cavity.

Preferably, the cylinder head comprises a cylinder head body and a cylinder cover, the cylinder head body is connected with the cylinder body, an accommodating groove is concavely formed at the top of the cylinder head body, and the cylinder cover is arranged outside the accommodating groove; two abdication holes penetrate through the accommodating groove, and the abdication holes are communicated with the air guide concave cavity; the cavity bottom of the air guide concave cavity is penetrated with two first mounting holes, the cylinder body is provided with a plurality of second mounting holes, and the abdication holes, the first mounting holes and the second mounting holes are correspondingly arranged.

Preferably, a rocker arm support is arranged in the accommodating groove, and the rocker arm support seals and plugs the two abdication holes.

Preferably, two first connecting holes penetrate through the accommodating groove, and the first connecting holes are communicated with the air guide concave cavity; the cavity bottom of the air guide cavity is penetrated with two second connecting holes, and each second connecting hole corresponds to one first connecting hole; the air guide device further comprises two connecting pipes, wherein the two connecting pipes are arranged in the air guide concave cavity, and two ends of each connecting pipe are respectively connected with the corresponding first connecting hole and the corresponding second connecting hole.

Preferably, two support columns are arranged in the air guide concave cavity, and two ends of the support columns are respectively connected with the top and the bottom of the air guide concave cavity.

Preferably, the air guide cavity is internally provided with an air guide blade, a guide groove is formed between the air guide blade and the cavity bottom of the air guide cavity, the guide groove is communicated with the air inlet, and one end of the guide groove, which is close to the exhaust side, is of a closed structure.

Another object of the present invention is to provide a generator set, including the engine.

The invention has the beneficial effects that:

the invention discloses an engine, which is characterized in that an air guide through hole and an air exhaust cavity are formed in a cylinder body, an air inlet hole communicated with the air guide through hole is formed in a cylinder head, the air inlet hole can introduce part of cooling air flow flowing to the cylinder head into the air guide through hole, the cooling air flow can be finally discharged from the air exhaust cavity, and in the process, part of heat of a cylinder barrel of the cylinder body can be taken away by the cooling air flow, so that the cooling effect on the cylinder body is improved, and the heat dissipation capacity of the cylinder body is enhanced.

The invention also discloses a generator set, by using the engine, the working environment of the engine is improved, the output power of the engine in a high-temperature environment is improved, and the dynamic property and the economical efficiency of the whole machine operation are further improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is a schematic diagram of an engine according to an embodiment of the present invention;

FIG. 2 is a schematic view of section A-A of FIG. 1;

FIG. 3 is a schematic structural view of a cylinder;

FIG. 4 is a partial schematic view of an exhaust plenum;

FIG. 5 is a schematic view of the cylinder head;

FIG. 6 is a side view of the intake side of the cylinder head body;

FIG. 7 is a schematic view of the structure in the receiving tank;

FIG. 8 is a schematic view of the structure within the air guiding cavity;

FIG. 9 is a schematic view of a structure of a rocker arm support for plugging two relief holes;

FIG. 10 is a schematic view of a bolt installed in a first mounting hole;

FIG. 11 is a schematic view of a flow guide groove;

reference numerals:

100-cylinder body, 101-wind guide through hole, 102-exhaust cavity, 103-wind shielding part, 104-second mounting hole and 105-tappet cavity;

200-cylinder heads, 201-air inlet holes, 202-air guide concave cavities, 203-accommodating grooves, 204-abdication holes, 205-first mounting holes, 206-first connecting holes, 207-second connecting holes, 208-supporting columns, 209-air guide blades, 210-guide grooves, 211-third mounting holes and 212-mounting spaces;

301-windward side, 302-leeward side, 303-intake side, 304-exhaust side;

400-rocker arm support;

500-connecting pipes;

600-bolts;

700-a tappet of the type described above,

800-spark plug.

Detailed Description

Embodiments of the technical scheme of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and thus are merely examples, and are not intended to limit the scope of the present invention.

It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is two or more unless specifically defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Example 1

As shown in fig. 1 to 11, in an embodiment of the present invention, an engine is provided, which includes a cylinder block 100 and a cylinder head 200, wherein an air guiding through hole 101 and an air exhausting cavity 102 are provided in the cylinder block 100, the air guiding through hole 101 extends toward a crankcase of the cylinder block 100, the air exhausting cavity 102 is provided below the air guiding through hole 101, the air exhausting cavity 102 is communicated with the air guiding through hole 101, and the air exhausting cavity 102 is provided in an open manner. The cylinder head 200 is disposed at the top of the cylinder body 100, and an air inlet 201 communicating with the air guide through hole 101 is formed in the cylinder head 200.

The engine is mounted in a housing of the generator set, in which a generator and a muffler (both not shown in the drawings) are also mounted, the generator, the engine and the muffler being arranged in sequence. When the engine drives the generator to operate, the impeller on the generator rotates at a high speed and forms negative pressure in the shell, external air is sucked into the shell and forms cooling air flow, the cooling air flow firstly cools the generator, and then the cooling air flow is blown to the cylinder body 100 and the cylinder head 200, so that the cooling of the cylinder body 100 and the cylinder head 200 is realized.

Due to the presence of the air inlet 201, part of the cooling air flowing through the cylinder head 200 flows into the air guide through hole 101 through the air inlet 201, flows into the exhaust cavity 102 from the direction towards the engine crankcase, and finally is exhausted from the exhaust cavity 102. In the process of flowing through the air guide through hole 101 and the air exhaust cavity 102, the cooling air flow can take away part of heat of the cylinder barrel of the cylinder body 100, so that the cooling effect of the cylinder barrel of the cylinder body 100 is improved.

The air flow after cooling the cylinder head 200 and the cylinder body 100 and the air flow discharged from the exhaust chamber 102 are blown to the muffler, so that the cooling of the generator, the engine and the muffler is realized.

According to the engine disclosed by the embodiment, the air guide through hole 101 and the air exhaust cavity 102 are formed in the cylinder body 100, the air inlet 201 communicated with the air guide through hole 101 is formed in the cylinder head 200, part of cooling air flow flowing to the cylinder head 200 can be introduced into the air guide through hole 101 through the air inlet 201, the part of cooling air flow can be finally discharged from the air exhaust cavity 102, in the process, part of heat of a cylinder barrel of the cylinder body 100 can be taken away by the cooling air flow, so that the cooling effect on the cylinder body 100 is improved, the heat dissipation capability of the cylinder body 100 is enhanced, the output power of the engine in a high-temperature environment is improved, and the power performance and the economical efficiency of the whole engine are improved.

In one embodiment, both sides of the cylinder block 100 are formed with a windward side 301 and a leeward side 302, respectively, and the exhaust chamber 102 penetrates the cylinder block 100 in a direction of the windward side 301 toward the leeward side 302. The windward side 301 refers to the side of the cylinder 100 facing the generator, and the leeward side 302 refers to the side of the cylinder 100 facing the muffler. When the cooling air flow blows to the windward side 301 of the cylinder body 100, a part of the air flow will blow to the exhaust cavity 102 directly, and the air flow will take away part of the heat of the cylinder barrel of the cylinder body 100 in the flowing process and blow to the muffler directly through the exhaust cavity 102, thus realizing the cooling of the cylinder body 100 and the muffler.

In one embodiment, the exhaust chamber 102 is provided with a wind shielding portion 103 near the chamber bottom of the windward side 301, and the wind shielding portion 103 extends toward the cylinder head 200. Since the top of the wind shielding part 103 is higher than the bottom of the exhaust cavity 102, the wind pressure at the bottom of the exhaust cavity 102 (near the leeward side 302) is smaller than the wind pressure at the wind shielding part 103, so that the air flow blown out from the wind guiding through hole 101 is blown directly to the opening of the exhaust cavity 102 near the leeward side 302, and finally is discharged out of the exhaust cavity 102 and blown to the muffler, thereby realizing the cooling of the muffler. Therefore, the design of the wind shielding part 103 facilitates guiding the air flow blown out from the air guiding through hole 101, thereby reducing the loss of the air flow flowing into the air exhausting cavity 102 and improving the heat dissipation effect to the cylinder.

In one embodiment, two sides of the cylinder head 200 are respectively formed with an air inlet side 303 and an air outlet side 304, a side wall of the cylinder head 200 between the air inlet side 303 and the air outlet side 304 is concavely formed with an air guide cavity 202, the air guide cavity 202 penetrates through the cylinder head 200 along the direction of the air inlet side 303 towards the air outlet side 304, and the air inlet 201 is formed in the air guide cavity 202. The air inlet side 303 is arranged on the same side as the windward side 301, the air outlet side 304 is arranged on the same side as the leeward side 302, after the cooling air flow enters the air guide concave cavity 202, the cylinder head 200 can be cooled, and part of the air flow can take away the heat of the cylinder head 200 and blow the heat to the muffler, so that the muffler can be cooled.

Because the air guide cavity 202 penetrates the cylinder head 200 along the direction from the air inlet side 303 to the air outlet side 304, the air guide cavity 202 correspondingly reduces the blocking of the cylinder head 200 to the cooling air flow, increases the cooling space inside the cylinder head 200, has better passing property of the cooling air flow through the cylinder head 200, and has larger heat exchange area between the cylinder head 200 and the cooling air flow, so that the cooling and heat dissipation effects of the cylinder head 200 are improved.

Due to the existence of the air inlet 201, part of the cooling air flow flowing through the air guide cavity 202 flows into the air guide through hole 101 through the air inlet 201, flows into the air exhaust cavity 102 from the direction towards the crankcase, and finally is exhausted from the air exhaust cavity 102. The cooling air flow takes away part of heat of the cylinder barrel of the cylinder body 100 in the process of flowing through the air guide through hole 101 and the air exhaust cavity 102, so that cooling and heat dissipation of the cylinder barrel are realized.

In one embodiment, referring to fig. 5, the cylinder head 200 includes a cylinder head body mounted on the cylinder block 100, a top of which is concavely formed with a receiving groove 203, and a cylinder head cover disposed outside the receiving groove 203. Two relief holes 204 are penetrated in the accommodating groove 203, and the relief holes 204 are communicated with the air guide concave cavity 202. The cavity bottom of the air guide cavity 202 is penetrated with two first mounting holes 205, the cylinder body 100 is provided with five second mounting holes 104, and the abdication holes 204, the first mounting holes 205 and the second mounting holes 104 are correspondingly arranged. A rocker arm support 400 is arranged in the accommodating groove 203, and the rocker arm support 400 seals and plugs the two abdication holes 204.

A third mounting hole 211 is formed through the bottom of the air guide cavity 202, a mounting space 212 for mounting the spark plug 800 is formed on the side of the cylinder head 200 away from the air guide cavity 202, two fourth mounting holes are formed through the mounting space 212, when the cylinder head body and the cylinder body 100 are assembled, the five second mounting holes 104 are aligned with the two first mounting holes 205, the two fourth mounting holes and the third mounting hole 211 respectively, and the first mounting holes 205, the fourth mounting holes and the third mounting holes 211 are fastened and connected with the second mounting holes 104 through bolts 600.

Because the height of the air guide cavity 202 is insufficient to screw the bolt 600 into the two first mounting holes 205, by designing the two relief holes 204 in the accommodating groove 203, the bolt 600 can be screwed into the first mounting holes 205 and the second mounting holes 104 through the relief holes 204, and after the bolt 600 is screwed, the head of the bolt 600 is positioned in the air guide cavity 202.

For the two relief holes 204, after the two bolts 600 are installed, the rocker arm support 400 is installed in the accommodating groove 203, so as to realize sealing and plugging of the two relief holes 204. After other parts in the accommodating groove 203 are assembled, the cylinder cover is arranged outside the accommodating groove 203. Meanwhile, the rocker arm support 400 is utilized to seal and block the two yielding holes 204, and other blocking parts are not required to be additionally designed to block the two yielding holes 204, so that the overall structure of the cylinder head 200 is optimized. Of course, in order to ensure the sealing effect of the rocker arm stand 400 against the two relief holes 204, a gasket is provided at the bottom of the rocker arm stand 400.

The conventional cylinder head structure needs to consider the installation of the bolt 600, so that redundant cooling space cannot be formed on one side, deviating from the installation space 212, of the cylinder head body, and the design of the cylinder head 200 in the embodiment abandons the structural design thought of the conventional cylinder head, so that the installation of the bolt 600 can be met, meanwhile, the blocking of the cylinder head 200 to cooling air flow can be reduced, the cooling space inside the cylinder head 200 is increased, and the cooling and radiating effects of the cylinder head 200 are improved.

In one embodiment, two first connecting holes 206 are formed in the accommodating groove 203, and the first connecting holes 206 are communicated with the air guiding cavity 202. Two second connecting holes 207 penetrate through the cavity bottom of the air guide cavity 202, and each second connecting hole 207 corresponds to one first connecting hole 206. The air guide cavity 202 is provided with two connecting pipes 500, wherein the two connecting pipes 500 are respectively arranged in the air guide cavity 202, and two ends of each connecting pipe 500 are respectively connected with the corresponding first connecting hole 206 and the corresponding second connecting hole 207.

The two connecting pipes 500 are pressed into the air guide concave cavity 202 after the cylinder head body is formed, the connecting pipes 500 are designed to be respectively connected with the first connecting hole 206 and the second connecting hole 207, the structure formed by the first connecting hole 206, the connecting pipes 500 and the second connecting hole 207 can be used for accommodating the tappet 700, and after the cylinder body 100, the cylinder head body and the cylinder cover are assembled, the structure can be matched with the tappet cavity 105 of the cylinder body 100 to realize isolation of the two tappet 700 from the outside.

In one embodiment, in order to improve the overall structural strength of the air guide cavity 202 and the cylinder head 200, two support columns 208 are disposed in the air guide cavity 202, two ends of the support columns 208 are respectively connected to the top and bottom of the air guide cavity 202, and the support columns 208 and the cylinder head 200 are integrally formed.

In one embodiment, the cooling air flow in the air guiding cavity 202 is conveniently guided to the air inlet 201, the air guiding blade 209 is arranged in the air guiding cavity 202, the air guiding groove 210 is formed between the air guiding blade 209 and the cavity bottom of the air guiding cavity 202, the air guiding groove 210 is communicated with the air inlet 201, and one end of the air guiding groove 210 close to the air exhaust side 304 is in a closed structure.

Example two

In an embodiment of the present invention, a generator set is provided, including the engine in the first embodiment, by using the engine, the cooling effect on the cylinder 100 is improved, the heat dissipation capability of the cylinder 100 is enhanced, the working environment of the engine is improved, and the output power of the engine in a high-temperature environment is improved, so that the power performance and economy of the whole machine operation are improved.

In the description of the present invention, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.

Claims

1. An engine, comprising:

the cylinder body is provided with an air guide through hole and an air exhaust cavity, the air guide through hole extends towards one side of a crank case of the cylinder body, the air exhaust cavity is arranged below the air guide through hole, the air exhaust cavity is communicated with the air guide through hole, and the air exhaust cavity is arranged in an open mode; and

the cylinder head is arranged at the top of the cylinder body, and an air inlet hole communicated with the air guide through hole penetrates through the cylinder head.

2. The engine of claim 1, wherein the cylinder is formed with a windward side and a leeward side on both sides thereof, respectively, and the exhaust chamber penetrates the cylinder in a direction from the windward side toward the leeward side.

3. The engine according to claim 2, wherein the exhaust chamber is provided with a wind shielding portion near a chamber bottom of the windward side, the wind shielding portion extending toward the cylinder head side.

4. The engine of claim 1, wherein an intake side and an exhaust side are formed on both sides of the cylinder head, and a sidewall of the cylinder head between the intake side and the exhaust side is recessed to form an air guiding cavity, the air guiding cavity penetrating the cylinder head in a direction from the intake side toward the exhaust side, and the intake Kong Kaishe is in the air guiding cavity.

5. The engine of claim 4, wherein the cylinder head comprises a cylinder head body and a cylinder head cover, the cylinder head body is connected with the cylinder body, a containing groove is concavely formed at the top of the cylinder head body, and the cylinder head cover is arranged outside the containing groove;

two abdication holes penetrate through the accommodating groove, and the abdication holes are communicated with the air guide concave cavity; the cavity bottom of the air guide concave cavity is penetrated with two first mounting holes, the cylinder body is provided with a plurality of second mounting holes, and the abdication holes, the first mounting holes and the second mounting holes are correspondingly arranged.

6. The engine of claim 5, wherein a rocker arm support is disposed in the receiving groove, and the rocker arm support seals off the two relief holes.

7. The engine of claim 5, wherein two first connecting holes are penetrated in the accommodating groove, and the first connecting holes are communicated with the air guide concave cavity; the cavity bottom of the air guide cavity is penetrated with two second connecting holes, and each second connecting hole corresponds to one first connecting hole;

the air guide device further comprises two connecting pipes, wherein the two connecting pipes are arranged in the air guide concave cavity, and two ends of each connecting pipe are respectively connected with the corresponding first connecting hole and the corresponding second connecting hole.

8. The engine of claim 4, wherein two support columns are arranged in the air guide concave cavity, and two ends of the support columns are respectively connected with the top and the bottom of the air guide concave cavity.

9. The engine of claim 4, wherein air guide blades are arranged in the air guide concave cavities, guide grooves are formed between the air guide blades and the cavity bottoms of the air guide concave cavities, the guide grooves are communicated with the air inlet holes, and one ends of the guide grooves, which are close to the exhaust side, are of a closed structure.

10. A generator set comprising an engine as claimed in any one of claims 1 to 9.