Oil-free movable air compressor

Abstract

The utility model discloses an oil-free movable air compressor which comprises a machine body, a support is installed in the machine body, and the inner space of the machine body is divided into a cold cavity and a hot cavity through the support. The main unit is mounted in the cold cavity; and the cooler group is mounted in the hot cavity. According to the oil-free movable air compressor provided by the utility model, the cooler groups needing to be cooled in the hot cavity are arranged in position, so that the cooler groups are encircled to form the positive pressure area, and the positive pressure area is arranged corresponding to the exhaust component; air flows towards the heat dissipation area in the cooler in a concentrated mode under the flow guiding effect of the side face exhaust grating and the top exhaust grating, and the temperature of a medium in the cooler is far higher than the temperature of the air input into the positive pressure area, so that a large amount of heat exchange can be rapidly carried out, and heat of the cooler is effectively driven; and a better air heat dissipation effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to an oil-free mobile air compressor. Background Art

[0002] An air compressor is a machine used to compress gas to increase gas pressure or transport gas. Air compressors have a wide range of applications, almost covering all fields such as industry, agriculture, national defense, science and technology, and civil use. There are many types of air compressors, including screw air compressors (screw air compressors are further divided into twin-screw air compressors and single-screw air compressors), piston air compressors, centrifugal air compressors, and scroll air compressors, etc. Among them, screw air compressors are currently the most widely used air compressors.

[0003] For example, a mobile oil-free screw air compressor disclosed in Chinese Patent No. 202311245810.9, which relates to the field of air compressors, includes a box body. The interior of the box body is divided into a high-temperature area and a cold-air area by a fan frame. A cooling component is arranged in the high-temperature area, and a main body system is centrally arranged in the cold-air area. A cooling fan is installed on the fan frame. One end of the box body located in the cold-air area is provided with an air intake component on three sides, and the other end of the box body is provided with an exhaust component on three sides; in the present invention, the interior of the box body is separated into cold and hot areas by the fan frame, the air duct is unidirectional and straight, and the exhaust is on three sides at the rear end to avoid backflow, with good cooling effect. The rotation speed of the cooling fan can be adjusted according to the working conditions of the best cooling effect and the best power consumption to reduce unnecessary power consumption and energy consumption; the internal pipeline installation structure is compact, the pipeline is long, and it can play a role in buffering air flow pulsation. The overall layout of the machine is compact and reasonable, and the box body specifications are symmetrical, which is convenient for transportation.

[0004] Although the above-mentioned mobile oil-free screw air compressor inputs external air to the front end for heat dissipation and then to the rear end for heat dissipation, during the process of air exhausting from the rear end, only the heat on the surface of the pipeline is driven by the flow of the air itself, which is limited, resulting in poor heat dissipation effect of the relatively scattered radiators at the rear end. Therefore, an oil-free mobile air compressor is proposed. Summary of the Utility Model

[0005] Based on this, in view of the above technical problems, it is necessary to provide an oil-free mobile air compressor, in which the cooler groups that need to dissipate heat in the hot cavity are arranged in a layout so that they enclose to form a positive pressure area and are correspondingly arranged with the exhaust component. In this way, when the air after one-time heat dissipation in the cold cavity is input into the hot cavity, the air is simultaneously guided by the side exhaust grille and the top exhaust grille and flows concentratedly towards the heat dissipation area in the cooler to form fast and effective heat dissipation.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An oil-free mobile air compressor, comprising:

[0008] A machine body, in which a bracket is installed, and the internal space of the machine body is divided into a cold chamber and a hot chamber by the bracket;

[0009] A main unit installed in the cold chamber;

[0010] a cooler assembly installed in the heat chamber;

[0011] The cooler group includes a compressor intercooler, an engine intercooler, an engine oil cooler, a compressor aftercooler, an engine water cooler and a compressor precooler installed in the hot cavity;

[0012] Wherein, the compressor intercooler, engine intercooler, engine oil cooler, compressor aftercooler, engine water cooler and compressor precooler are connected to the main unit through corresponding interfaces in the pipeline system;

[0013] It also includes: a heat dissipation structure, which is installed inside the body through the bracket. Under the action of the heat dissipation structure, external air can be input from the cold cavity into the hot cavity to take away the surface heat of the main unit group and the cooler group in turn.

[0014] Furthermore, the machine body is provided with an air intake assembly and an exhaust assembly respectively;

[0015] The air intake assembly is arranged corresponding to the cold chamber;

[0016] The exhaust assembly is arranged corresponding to the heat chamber.

[0017] Furthermore, the air intake assembly comprises a side air intake grille and a top air intake grille, and under the action of the heat dissipation structure, the side air intake grille and the top air intake grille can work together to input air into the cold chamber.

[0018] Furthermore, the exhaust assembly includes a side exhaust grille and a top exhaust grille, and the air input into the heat chamber under the action of the heat dissipation structure can be discharged to the outside through the side exhaust grille and the top exhaust grille.

[0019] Furthermore, the compressor intercooler, engine intercooler, engine oil cooler, compressor aftercooler, engine water cooler and compressor precooler together form a positive pressure zone;

[0020] The side air intake grilles and the top air intake grilles are arranged correspondingly to the compressor intercooler, engine intercooler, engine oil cooling, compressor aftercooler, engine water cooling and compressor precooler in the positive pressure zone.

[0021] Furthermore, the heat dissipation structure includes a support base fixed on the bracket, a transmission assembly installed on the support base, and a fan blade arranged on one side of the support base and transmission-connected to the transmission assembly.

[0022] Further, the transmission assembly includes an input shaft and an output shaft. A first pulley and a second pulley are coaxially and fixedly arranged on the input shaft and the output shaft respectively. Both the first pulley and the second pulley are movably connected to the support base through bearings.

[0023] Wherein, a V-belt is sleeved on the surfaces of the first pulley and the second pulley for common transmission.

[0024] Further, the fan blade is arranged in the heat chamber and is coaxially fixed to the output shaft.

[0025] The input shaft is arranged in the cold chamber and is connected to the power take-off shaft of the engine in the main unit.

[0026] Further, a movable bearing seat is fixed to the bottom wall of the machine body, and a handle is also connected to one side of the bearing seat.

[0027] Further, an electric control cabinet is installed on the front surface of the machine body.

[0028] Compared with the prior art, the utility model has the following beneficial effects:

[0029] For the oil-free mobile air compressor provided by the utility model, the cooler groups that need to dissipate heat in the heat chamber are arranged in position to surround and form a positive pressure area, which is correspondingly arranged with the exhaust assembly. In this way, when the air after the first heat dissipation in the cold chamber is input into the heat chamber, the air is simultaneously guided by the side exhaust grille and the top exhaust grille and concentrated to flow towards the heat dissipation area in the cooler. Since the temperature of the medium in the cooler is much higher than the temperature of the air input into the positive pressure area, a large amount of heat exchange can be quickly carried out, effectively driving the heat of the cooler and achieving a better air heat dissipation effect.

[0030] At the same time, by adopting the belt drive method to drive the heat dissipation structure, power can be taken from the engine main shaft bracket, realizing a substantial increase in the use power and torque. Description of the Drawings

[0031] Figure 1 is a schematic structural diagram of the oil-free mobile air compressor provided by the utility model;

[0032] Figure 2 is a schematic rear view structural diagram of the oil-free mobile air compressor provided by the utility model;

[0033] Figure 3 is a schematic internal structural diagram of the oil-free mobile air compressor provided by the utility model;

[0034] Figure 4 is a schematic side view structural diagram of the oil-free mobile air compressor provided by the utility model;

[0035] Figure 5Schematic structural diagram of the heat dissipation structure of the oil-free mobile air compressor provided by the present utility model;

[0036] Figure 6 Partial structural schematic diagram of the heat dissipation structure of the oil-free mobile air compressor provided by the present utility model.

[0037] The markings in the figure are explained as follows:

[0038] Machine body 1, intake assembly 11, exhaust assembly 12, hot cavity 13, positive pressure area 14, engine power take-off shaft 15, mobile carrier seat 16, electric control cabinet 17, bracket 18, cold cavity 19;

[0039] Side intake grille 110, top intake grille 111;

[0040] Side exhaust grille 120, top exhaust grille 121;

[0041] Main unit 2;

[0042] Cooler group 3, compressor intercooler 31, engine intercooler 32, engine oil cooler 33, compressor aftercooler 34, engine water cooler 35, compressor pre-cooler 36;

[0043] Heat dissipation structure 4, support seat 41, transmission assembly 42, fan blade 43,

[0044] Input shaft 420, output shaft 421, pulley one 422, pulley two 423, V-belt 424,

[0045] Pipeline system 5. Detailed implementation manners

[0046] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0047] As described in the background art, although the above-mentioned mobile oil-free screw air compressor inputs external air to the front end for heat dissipation and then inputs it to the rear end for heat dissipation, since only the flow of air itself drives the heat on the pipeline surface limitedly during the process of air discharging from the rear end, the heat dissipation effect of the multiple relatively scattered radiators at the rear end is poor. Therefore, an oil-free mobile air compressor is proposed.

[0048] To solve this technical problem, the present utility model provides an oil-free mobile air compressor, which is applied to through-type solid-phase extraction.

[0049] Specifically, please refer to Figures 1-6 , the oil-free mobile air compressor specifically includes:

[0050] A body 1, in which a bracket 18 is installed, and the internal space of the body 1 is divided into a cold chamber 19 and a hot chamber 13 by the bracket 18;

[0051] A main unit group 2, which is installed in the cold chamber 19;

[0052] A cooler group 3, which is installed in the hot chamber 13;

[0053] The cooler group 3 includes a compressor intercooler 31, an engine intercooler 32, an engine oil cooler 33, a compressor aftercooler 34, an engine water cooler 35 and a compressor pre-cooler 36 installed in the hot chamber 13;

[0054] Among them, the compressor intercooler 31, the engine intercooler 32, the engine oil cooler 33, the compressor aftercooler 34, the engine water cooler 35 and the compressor pre-cooler 36 are correspondingly connected to the main unit group 2 through corresponding interfaces in the pipeline system 5;

[0055] It also includes: a heat dissipation structure 4, which is installed inside the body 1 through the bracket 18, and under the action of the heat dissipation structure 4, external air can be input from the cold chamber 19 into the hot chamber 13 to take away the heat on the surfaces of the main unit group 2 and the cooler group 3 in turn.

[0056] For the oil-free mobile air compressor provided by the present utility model, the cooler group 3 that needs to dissipate heat in the hot chamber 13 is arranged in position so as to enclose and form a positive pressure area 14 and is correspondingly arranged with the exhaust assembly 12. In this way, when the air after one-time heat dissipation in the cold chamber 19 is input into the hot chamber 13, the air is simultaneously guided by the side exhaust grille 120 and the top exhaust grille 121 and concentratedly flows towards the heat dissipation area in the cooler group 3. Since the temperature of the medium in the cooler group 3 is much higher than the temperature of the air input into the positive pressure area, a large amount of heat exchange can be quickly carried out, effectively driving the heat of the cooler group 3 and achieving a better air heat dissipation effect.

[0057] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

[0058] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments can be combined with each other.

[0059] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0060] Please refer to Figures 1-6 As shown, an oil-free mobile air compressor, with a body 1. Inside the body 1, a bracket 18 is installed, and the internal space of the body 1 is divided into a cold chamber 19 and a hot chamber 13 by the bracket 18; a main unit group 2, which is installed in the cold chamber 19;

[0061] a cooler group 3, which is installed in the hot chamber 13; the cooler group 3 includes a compressor intercooler 31, an engine intercooler 32, an engine oil cooler 33, a compressor aftercooler 34, an engine water cooler 35 and a compressor pre-cooler 36 installed in the hot chamber 13. Among them, the compressor intercooler 31, the engine intercooler 32, the engine oil cooler 33, the compressor aftercooler 34, the engine water cooler 35 and the compressor pre-cooler 36 are correspondingly connected to the main unit group 2 through corresponding interfaces in the pipeline system 5. An electric control cabinet 17 is installed on the front of the body 1;

[0062] It further includes: a heat dissipation structure 4, which is installed inside the body 1 through the bracket 18. Under the action of the heat dissipation structure 4, external air can be input from the cold chamber 19 into the hot chamber 13 to sequentially take away the heat on the surfaces of the main unit group 2 and the cooler group 3;

[0063] As Figure 1 、 Figure 2 and Figure 3 shown, the body 1 is respectively provided with an air intake assembly 11 and an exhaust assembly 12. The air intake assembly 11 is correspondingly arranged with the cold chamber 19, and the exhaust assembly 12 is correspondingly arranged with the hot chamber 13;

[0064] The air intake assembly 11 includes a side air intake grille 110 and a top air intake grille 111. Under the action of the heat dissipation structure 4, the side air intake grille 110 and the top air intake grille 111 can jointly act on the air input into the cold chamber 19;

[0065] The exhaust assembly 12 includes a side exhaust grille 120 and a top exhaust grille 121. Under the action of the heat dissipation structure 4, the air input into the hot chamber 13 can be jointly discharged to the outside through the side exhaust grille 120 and the top exhaust grille 121;

[0066] When the heat dissipation structure 4 is working, external air will be input into the cold chamber 19 inside the body 1 through the side air intake grille 110 and the top air intake grille 111 in the air intake assembly 11. Then, after the further transportation of the heat dissipation structure 4, the air in the cold chamber 19 will finally be input into the hot chamber 13 and discharged to the outside through the exhaust assembly 12;

[0067] The compressor intercooler 31, the engine intercooler 32, the engine oil cooler 33, the compressor aftercooler 34, the engine water cooler 35 and the compressor pre-cooler 36 jointly enclose a positive pressure area 14, the said;

[0068] The side air intake grille 110 and the top air intake grille 111 are arranged correspondingly to the compressor intercooler 31, the engine intercooler 32, the engine oil cooler 33, the compressor aftercooler 34, the engine water cooler 35 and the compressor precooler 36 in the positive pressure area 14;

[0069] Specifically, when the air compressor is cooled:

[0070] The heat dissipation structure 4 works to generate a negative pressure state in the heat chamber 13. The outside of the body 1 is at normal atmospheric pressure. Under the action of the pressure difference, air at the external ambient temperature enters the inside of the body 1 through the side air intake grille 110 and the top air intake grille 111. Figure 3 The device passes through the entire cold chamber 19 from the leftmost side of the machine body 1, and then enters the hot chamber 13 through the heat dissipation structure 4;

[0071] In the above process, the air encounters the components working under high temperature in the cold chamber 19, which initially cools down the components and dissipates heat with the components. In this process, the temperature rise of the cooling air is controlled within 3 degrees, which has little effect on the heat dissipation of the cooler group 3 at the rear end (hot chamber 13), which has been taken into consideration when designing the cooler.

[0072] Afterwards, the air is accelerated through the heat dissipation structure 4, and finally a positive pressure zone 14 is formed in the encirclement of the cooler group 3 on the right side of the unit. In this enclosed space, the air in the positive pressure zone 14 will be discharged to the outside through the heat exchange channel in the cooler group 3 corresponding to the side exhaust grille 120 and the top exhaust grille 121. In this process, the inside of the cooler group 3 is a high-temperature medium and the outside is normal temperature air. In the case of a temperature difference, a large amount of heat is exchanged to the air, the air temperature rises, and is discharged to the outside of the body 1, thus taking away the heat, thereby achieving centralized and effective heat dissipation of the air compressor cooler group 3.

[0073] The oil-free mobile air compressor provided in Example 1 is further optimized, specifically, as follows Figure 4 , Figure 5 and Figure 6 As shown, the heat dissipation structure 4 includes a support base 41 fixed on the bracket 18, a transmission assembly 42 installed on the support base 41, and a fan blade 43 provided on one side of the support base 41 and transmission-connected to the transmission assembly 42;

[0074] The transmission assembly 42 includes an input shaft 420 and an output shaft 421, on which a pulley 1 422 and a pulley 2 423 are coaxially fixed, respectively, and the pulley 1 422 and the pulley 2 423 are movably connected to the support seat 41 through a bearing, wherein a V-belt 424 is provided on the surfaces of the pulley 1 422 and the pulley 2 423;

[0075] The fan blade 43 is arranged inside the hot cavity 13 and is coaxially fixed to the output shaft 421. The input shaft 420 is arranged inside the cold cavity 19 and is connected to the engine power take-off shaft 15 inside the main unit 2.

[0076] Specifically, the engine power take-off shaft 15 drives the input shaft 420 and the pulley one 422 thereon to rotate. The pulley one 422 drives the pulley two 423 and the rotation of the output shaft 421 thereon synchronously under the action of the V-belt 424, thereby driving the fan blade 43 to rotate.

[0077] Since the fan blade 43 is arranged inside the said hot cavity 13, in the working state, the fan blade 43 will draw in the external air through the intake assembly 11 into the body 1 and finally output it to the outside through the exhaust assembly 12 to form effective heat dissipation for the internal structure of the body 1.

[0078] Since the above-mentioned fan blade 43 is installed on the independent engine power take-off shaft 15, and the engine power take-off shaft 15 is driven by a belt, and the pulley one 422 and the pulley two 423 are driven by the V-belt 424, the rotation speed of the fan blade 43 can be adjusted by selecting different diameters of the pulley one 422 and the pulley two 423 to match the requirements of different models and working conditions.

[0079] The belt drive system has a simple structure, few components, smooth operation, good stability and reliability. The V-belt is a standard product with good part versatility and convenient later maintenance.

[0080] Further optimize the oil-free mobile air compressor provided in Embodiment 1 or 2, such as Figure 1 and Figure 2 As shown, a mobile bearing seat 16 is fixed to the bottom wall of the body 1, and a handle is also connected to one side of the bearing seat 16.

[0081] Through the setting of the mobile bearing seat 16, it is convenient to move the oil-free mobile air compressor in the actual use state.

[0082] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0083] Obviously, the embodiments described above are only a part of the embodiments of the present utility model, rather than all of them. The preferred embodiments of the present utility model are shown in the accompanying drawings, but do not limit the patent scope of the present utility model. The present utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure made by using the content of the specification and drawings of the present utility model, directly or indirectly applied in other related technical fields, is equally within the scope of the patent protection of the present utility model.

Claims

1. An oil-free mobile air compressor, characterized in that: It includes: A machine body (1), wherein a bracket (18) is installed in the machine body (1), and the internal space of the machine body (1) is divided into a cold chamber (19) and a hot chamber (13) by the bracket (18); A main unit (2) installed in the cold chamber (19); A cooler group (3) installed in the hot chamber (13); The cooler group (3) comprises a compressor intercooler (31), an engine intercooler (32), an engine oil cooler (33), a compressor aftercooler (34), an engine water cooler (35) and a compressor precooler (36) installed in the hot chamber (13); The compressor intercooler (31), the engine intercooler (32), the engine oil cooler (33), the compressor aftercooler (34), the engine water cooler (35) and the compressor precooler (36) are connected to the main unit (2) via corresponding interfaces in the pipeline system (5); It also includes a heat dissipation structure (4) which is installed inside the machine body (1) via the bracket (18). The heat dissipation structure (4) allows external air to be input from the cold cavity (19) into the hot cavity (13) to sequentially remove surface heat from the main unit group (2) and the cooler group (3).

2. The oil-free mobile air compressor according to claim 1, characterized in that: The machine body (1) is provided with an air intake assembly (11) and an exhaust assembly (12); The air intake assembly (11) and the cold chamber (19) are arranged correspondingly; The exhaust assembly (12) is arranged corresponding to the hot chamber (13).

3. The oil-free mobile air compressor according to claim 2, characterized in that: The air intake assembly (11) comprises a side air intake grille (110) and a top air intake grille (111); under the action of the heat dissipation structure (4), the side air intake grille (110) and the top air intake grille (111) can work together to input air into the cold chamber (19).

4. The oil-free mobile air compressor according to claim 2, characterized in that: The exhaust assembly (12) comprises a side exhaust grille (120) and a top exhaust grille (121), and air input into the heat chamber (13) under the action of the heat dissipation structure (4) can be discharged to the outside through the side exhaust grille (120) and the top exhaust grille (121).

5. The oil-free mobile air compressor according to claim 2, characterized in that: The compressor intercooler (31), the engine intercooler (32), the engine oil cooler (33), the compressor aftercooler (34), the engine water cooler (35) and the compressor precooler (36) together form a positive pressure zone (14); The side air intake grille (110) and the top air intake grille (111) are arranged correspondingly to the compressor intercooler (31), the engine intercooler (32), the engine oil cooler (33), the compressor aftercooler (34), the engine water cooler (35) and the compressor precooler (36) in the positive pressure zone (14).

6. The oil-free mobile air compressor according to claim 1, characterized in that: The heat dissipation structure (4) comprises a support base (41) fixed on the bracket (18), a transmission assembly (42) mounted on the support base (41), and a fan blade (43) provided on one side of the support base (41) and transmission-connected to the transmission assembly (42).

7. The oil-free mobile air compressor according to claim 6, characterized in that: The transmission assembly (42) comprises an input shaft (420) and an output shaft (421), and a pulley 1 (422) and a pulley 2 (423) are coaxially fixed to the input shaft (420) and the output shaft (421), respectively, and the pulley 1 (422) and the pulley 2 (423) are both movably connected to the support seat (41) via bearings; Wherein, a V-belt (424) is provided on the common transmission sleeve on the surfaces of the belt pulley 1 (422) and the belt pulley 2 (423).

8. The oil-free mobile air compressor according to claim 7, characterized in that: The fan blade (43) is disposed in the heat chamber (13) and is coaxially fixed with the output shaft (421); The input shaft (420) is disposed in the cold chamber (19) and is connected to the engine power take-off shaft (15) in the main engine group (2).

9. The oil-free mobile air compressor according to claim 1, characterized in that: A movable bearing seat (16) is fixed to the bottom wall of the machine body (1), and a handle is connected to one side of the movable bearing seat (16).

10. The oil-free mobile air compressor according to claim 1, characterized in that: An electric control cabinet (17) is installed on the front side of the machine body (1).

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