Air compressor and plasma cutting device

Abstract

The utility model belongs to the technical field of plasma cutting, and discloses an air compressor and a plasma cutting device, the air compressor comprises a shell and a compressor main body, the shell is provided with an inner cavity for accommodating the compressor main body, the shell is provided with an air inlet and an air outlet, the air compressor further comprises a wind shield and a fan, the wind shield is arranged in the shell, and the fan is arranged in the shell. The wind shield is provided with an air inlet cavity, and the air inlet, the air inlet cavity, the inner cavity and the air outlet are sequentially communicated to form a heat dissipation channel. The fan is arranged in the shell and is configured to enable air to flow from the air inlet cavity to the inner cavity in a one-way mode after the fan is started, so that air outside the shell enters the air inlet cavity through the air inlet and then flows to the inner cavity, the compressor body is cooled, the temperature of the air making contact with the compressor body rises, and the air pressure of the inner cavity is larger than that of the outer portion of the shell. Air in the inner cavity is automatically exhausted through the air outlet due to the internal and external air pressure difference, so that the internal and external air exchange efficiency of the shell is improved, the heat dissipation efficiency is improved, and the temperature of compressed air output by the air compressor is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of plasma cutting, in particular to an air compressor and a plasma cutting device. Background Art

[0002] Air plasma cutting technology is widely used in metal cutting, which has the advantages of fast cutting speed, good cutting quality, simple operation and low cost. Since air plasma cutting requires high-pressure compressed air, an air compressor is usually used to provide high-pressure gas for an air plasma cutting machine. When the air compressor works, a large amount of heat is easily generated by the compressor main body, resulting in a relatively high temperature of the output compressed air. The high-temperature compressed air enters the cutting circuit, which will damage the components of the air plasma cutting machine, such as the cutting torch, electrode and nozzle, etc., and will also affect the cutting quality. Moreover, the air compressor is also prone to overheat and damage.

[0003] In the existing air compressor, a fan is usually arranged inside the housing of the air compressor to cool the compressor main body. However, due to the low gas circulation efficiency inside the housing, the heat dissipation effect is not good.

[0004] Therefore, it is urgent to propose an air compressor and a plasma cutting device to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an air compressor and a plasma cutting device, which can reduce the temperature of the compressor main body and the temperature of the compressed gas, and have low cost and small volume.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An air compressor includes a housing and a compressor main body. The housing has an inner cavity for accommodating the compressor main body, and an air inlet and an air outlet are formed on the housing. Wherein, the air compressor further includes:

[0008] A wind shield is arranged inside the housing. The wind shield has an air inlet cavity, and the air inlet, the air inlet cavity, the inner cavity and the air outlet are sequentially communicated to form a heat dissipation channel;

[0009] A fan is arranged inside the housing. The fan is configured to make the gas flow unidirectionally from the air inlet cavity to the inner cavity after being turned on.

[0010] Furthermore, the fan is arranged on the compressor main body.

[0011] Further, at least one of the heat dissipation fans is provided at each of the two ends of the compressor body in the length direction, at least one air inlet is formed on each of the two sides of the housing in the length direction, and at least one air outlet is formed on each of the two sides of the housing in the width direction.

[0012] Further, the air inlet includes a plurality of first strip-shaped grooves; and / or, the air outlet includes a plurality of second strip-shaped grooves.

[0013] Further, a first baffle corresponding to each of the first strip-shaped grooves is further provided on the housing, and a plurality of the first baffles are arranged in parallel on the outer surface of the housing, and each of the first baffles covers the corresponding first strip-shaped groove; and / or, a second baffle corresponding to each of the second strip-shaped grooves is further provided on the housing, and a plurality of the second baffles are arranged in parallel on the outer surface of the housing, and each of the second baffles covers the corresponding second strip-shaped groove.

[0014] Further, the first baffle is inclined away from the housing from top to bottom; and / or, the second baffle is inclined away from the housing from top to bottom.

[0015] Further, the wind shield and the housing are detachably connected.

[0016] Further, the air inlet of the compressor body is communicated with the outside of the housing.

[0017] Further, the air compressor further includes an air filter, the air filter is arranged on the housing, and the suction end of the air filter is communicated with the outside of the housing, and the air outlet end of the air filter is communicated with the air inlet of the compressor body.

[0018] A plasma cutting device includes an air plasma cutting machine and the air compressor as described above, and the air inlet of the air plasma cutting machine is communicated with the air outlet of the air compressor.

[0019] The beneficial effects of the present utility model:

[0020] The present utility model provides an air compressor, which includes a housing and a compressor main body. The housing has an inner cavity for accommodating the compressor main body, and an air inlet and an air outlet are provided on the housing. The air compressor further includes a wind shield and a fan. The wind shield is disposed inside the housing and has an air inlet cavity, and the air inlet, the air inlet cavity, the inner cavity and the air outlet are sequentially connected to form a heat dissipation channel. The fan is disposed inside the housing and is configured to make the gas flow unidirectionally from the air inlet cavity to the inner cavity after being turned on, so that the gas outside the housing enters the air inlet cavity through the air inlet and then flows into the inner cavity, thereby cooling the compressor main body. The temperature of the gas after contacting the compressor main body rises, resulting in the air pressure in the inner cavity being greater than the air pressure outside the housing. The internal and external air pressure difference causes the gas in the inner cavity to automatically discharge through the air outlet, thereby forming a self-cooling heat cycle of the compressor main body, which can accelerate the gas exchange efficiency inside and outside the housing, and further improve the heat dissipation efficiency and reduce the temperature of the compressed gas output by the air compressor. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the air compressor provided by the present utility model;

[0022] Figure 2 is a schematic internal structure diagram of the air compressor provided by the present utility model;

[0023] Figure 3 is a sectional view of the air compressor provided by the present utility model.

[0024] In the figure:

[0025] 1. Housing; 11. Air inlet; 12. Air outlet; 13. First baffle; 14. Second baffle;

[0026] 2. Compressor main body;

[0027] 3. Wind shield; 31. Air inlet cavity;

[0028] 4. Fan;

[0029] 5. Air filter. Detailed Embodiment

[0030] The following further describes the present utility model in detail with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only some parts related to the present utility model are shown in the drawings, rather than all the structures.

[0031] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0033] In the description of this embodiment, the orientation or positional relationship terms such as "above", "below", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] Such as Figures 1 to 3As shown in the figure, this embodiment provides an air compressor, which includes a housing 1 and a compressor main body 2. The housing 1 has an inner cavity for accommodating the compressor main body 2. An air inlet 11 and an air outlet 12 are formed on the housing 1. The air compressor further includes a wind shield 3 and a fan 4. The wind shield 3 is arranged inside the housing 1. The wind shield 3 has an air inlet cavity 31, and the air inlet 11, the air inlet cavity 31, the inner cavity and the air outlet 12 are sequentially connected to form a heat dissipation channel. The fan 4 is arranged inside the housing 1. The fan 4 is configured to make the gas flow unidirectionally from the air inlet cavity 31 to the inner cavity after being turned on, so that the gas outside the housing 1 enters the air inlet cavity 31 through the air inlet 11 and then flows into the inner cavity, thereby cooling the compressor main body 2. The temperature of the gas after contacting the compressor main body 2 rises, resulting in the air pressure inside the inner cavity being greater than the air pressure outside the housing 1. The internal and external air pressure difference makes the gas inside the inner cavity automatically discharge through the air outlet 12, thus forming a self-cooling heat cycle of the compressor main body 2, which can accelerate the gas exchange efficiency inside and outside the housing 1, and further improve the heat dissipation efficiency. It is easy to know that the gas needs to be compressed by the compressor main body 2 to obtain high-pressure compressed gas. Therefore, reducing the temperature of the compressor main body 2 can also reduce the temperature of the compressed gas output by the air compressor.

[0035] Among them, the flow direction of the gas outside the housing towards the inside of the housing is as Figure 3 shown by the arrow in the figure.

[0036] In some embodiments, the fan 4 is arranged on the compressor main body 2, making the structure of the housing 1 simple and convenient for installation. Putting the compressor and the fan 4 into the inner cavity together and closing the housing 1 can complete the assembly of the air compressor.

[0037] In some other embodiments, at least one fan 4 is respectively arranged at both ends of the compressor main body 2 along the length direction. At least one air inlet 11 is respectively formed on both sides of the housing 1 along the length direction. At least one air outlet 12 is respectively formed on both sides of the housing 1 along the width direction. The gas outside the housing 1 enters the air inlet cavity 31 through the air inlets 11 on both sides of the housing 1, flows towards the middle of the housing 1, and then flows out through the air outlets 12 on both sides of the housing 1 along the length direction, enabling the gas to fully exchange heat with the compressor main body 2. And at least one fan 4 is respectively arranged at both ends of the compressor main body 2 along the length direction, which can further improve the heat dissipation efficiency.

[0038] Specifically, two air outlets 12 are respectively formed on both sides of the housing 1 along the width direction, increasing the air outlet area and being beneficial to improving the flow rate of the gas inside the inner cavity flowing towards the outside of the housing 1.

[0039] Furthermore, the air inlet 11 includes a plurality of first strip-shaped grooves, which facilitates the formation of gas circulation inside and outside the housing 1 and increases the gas flow rate of the air inlet 11. Similarly, the air outlet 12 includes a plurality of second strip-shaped grooves, which facilitates the formation of gas circulation inside and outside the housing 1 and increases the gas flow rate of the air outlet 12, thereby improving the thermal circulation efficiency of the entire air compressor.

[0040] Even further, the housing 1 is also provided with first baffles 13 corresponding to the first strip-shaped grooves one by one. The plurality of first baffles 13 are arranged in parallel on the outer surface of the housing 1, and each first baffle 13 covers the corresponding first strip-shaped groove, thereby forming a shield for the first strip-shaped groove to prevent external impurities from entering the housing 1 through the air inlet 11 and being able to guide the gas flow direction of the air inlet 11, further improving the gas circulation efficiency. Similarly, the housing 1 is also provided with second baffles 14 corresponding to the second strip-shaped grooves one by one. The plurality of second baffles 14 are arranged in parallel on the outer surface of the housing 1, and each second baffle 14 covers the corresponding second strip-shaped groove, thereby forming a shield for the second strip-shaped groove to prevent external impurities from entering the housing 1 through the air outlet 12 and being able to guide the gas flow direction of the air outlet 12, further improving the gas circulation efficiency.

[0041] As Figure 3 shown, the first baffle 13 inclines downward away from the housing 1 from top to bottom, further blocking impurities such as dust or rainwater from entering the first strip-shaped groove through the first baffle 13, which is beneficial to maintaining the cleanliness inside the air compressor and extending the service life. Similarly, the second baffle 14 inclines downward away from the housing 1 from top to bottom, which can maintain the cleanliness inside the air compressor and extend the service life, and will not be elaborated here.

[0042] Since the sizes of the compressor bodies 2 of different models may be different, the windshield 3 and the housing 1 are detachably connected. The staff can replace the windshield 3 of different sizes according to the size of the compressor body 2, so that the windshield 3 isolates the compressor body 2 and the air inlet 11, and makes the outlet of the air inlet chamber 31 close to the fan 4, facilitating the fan 4 to make the gas flow unidirectionally from the air inlet chamber 31 to the inner cavity and preventing the gas with a higher temperature around the compressor body 2 from being sucked in by the fan 4. In this embodiment, the windshield 3 and the housing 1 are detachably connected, which is convenient for installing and replacing the windshield 3. Optionally, the connection manner between the windshield 3 and the housing 1 can also be snap connection, etc., which is not limited here.

[0043] Furthermore, the air inlet of the compressor body 2 is communicated with the outside of the housing 1, which can directly suck the gas with a lower temperature outside the housing 1 and avoid sucking the gas with a higher temperature around the compressor body 2, thereby further reducing the temperature of the compressed gas output by the air compressor.

[0044] In this embodiment, the air compressor further includes an air filter 5. The air filter 5 is disposed on the housing 1, and the suction end of the air filter 5 is in communication with the exterior of the housing 1, and the discharge end of the air filter 5 is in communication with the air inlet of the compressor main body 2. The gas outside the housing 1 enters the air inlet of the compressor main body 2 after being filtered by the air filter 5, and then enters the compressor main body 2 for compression, which can remove impurities such as dust in the gas and extend the service life of the compressor main body 2.

[0045] Optionally, the air compressor further includes a connecting pipe (not shown in the figure), and the discharge end of the air filter 5 is in communication with the air inlet of the compressor main body 2 through the connecting pipe.

[0046] This embodiment also provides a plasma cutting device, which includes an air plasma cutting machine and the above-mentioned air compressor. The air inlet of the air plasma cutting machine is in communication with the air outlet of the air compressor, so that the air plasma cutting machine can obtain compressed gas at a lower temperature, thereby extending the service life of the air plasma cutting machine and improving the cutting quality. Among them, the specific structure of the air plasma compressor belongs to the prior art and will not be elaborated here.

[0047] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the embodiments of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An air compressor, comprising a housing (1) and a compressor main body (2), the housing (1) having an inner cavity for accommodating the compressor main body (2), and an air inlet (11) and an air outlet (12) being formed on the housing (1), characterized in that, The air compressor further includes: A wind shield (3) disposed within the housing (1). The wind shield (3) has an air inlet cavity, and the air inlet (11), the air inlet cavity (31), the inner cavity, and the air outlet (12) are sequentially connected to form a heat dissipation channel. A fan (4) disposed within the housing (1). The fan (4) is configured to cause gas to flow unidirectionally from the air inlet cavity (31) to the inner cavity after being turned on.

2. The air compressor according to claim 1, characterized in that, The fan (4) is disposed on the compressor main body (2).

3. The air compressor according to claim 1, characterized in that, At least one fan (4) is respectively disposed at both ends of the compressor main body (2) along the length direction. At least one air inlet (11) is respectively formed on both sides of the housing (1) along the length direction. At least one air outlet (12) is respectively formed on both sides of the housing (1) along the width direction.

4. The air compressor according to claim 1, wherein The air inlet (11) includes a plurality of first strip-shaped grooves; and / or, the air outlet (12) includes a plurality of second strip-shaped grooves.

5. The air compressor according to claim 4, wherein, The housing (1) is further provided with first baffles (13) corresponding to the first strip-shaped grooves one by one. A plurality of the first baffles (13) are arranged in parallel on the outer surface of the housing (1), and each first baffle (13) covers the corresponding first strip-shaped groove; and / or, the housing (1) is further provided with second baffles (14) corresponding to the second strip-shaped grooves one by one. A plurality of the second baffles (14) are arranged in parallel on the outer surface of the housing (1), and each second baffle (14) covers the corresponding second strip-shaped groove.

6. The air compressor according to claim 5, characterized in that, The first baffle (13) is inclined away from the housing (1) from top to bottom; and / or, the second baffle (14) is inclined away from the housing (1) from top to bottom.

7. The air compressor according to any one of claims 1 to 6, characterized in that, The wind shield (3) and the housing (1) are detachably connected.

8. The air compressor according to any one of claims 1 to 6, characterized in that, The air inlet of the compressor main body (2) is communicated with the outside of the housing (1).

9. The air compressor according to any one of claims 1 to 6, characterized in that, The air compressor further includes an air filter (5). The air filter (5) is disposed on the housing (1), and the suction end of the air filter (5) is communicated with the outside of the housing (1), and the air outlet end of the air filter (5) is communicated with the air inlet of the compressor main body (2).

10. A plasma cutting device, characterized in that, An air plasma cutter and the air compressor according to any one of claims 1 to 9, wherein the air inlet of the air plasma cutter is communicated with the air outlet of the air compressor.

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