Cooling device of environment-friendly oil-free fan

Abstract

The cooling device of the environment-friendly oil-free fan comprises a fan body, an annular cooling groove is formed in the outer side wall of the middle of the fan body, an outer annular sleeve body is fixed to the outer side wall of the middle of the fan body and covers the annular cooling groove, and a cooling cavity is formed by the outer annular sleeve body and the annular cooling groove. A spiral protruding guide part is formed on the inner side wall of the outer annular sleeve body, a water inlet connector extending upwards is formed on the outer side wall of the upper portion of the left end of the outer annular sleeve body, a water outlet connector extending downwards is formed on the outer side wall of the lower portion of the right end of the outer annular sleeve body, and the water outlet connector and the water inlet connector are communicated with the cooling cavity. By means of the spiral protruding guide part formed on the inner side wall of the outer annular sleeve body and the annular protruding parts which extend in the radial direction and are formed on the inner side wall of the annular cooling groove, flowing of water in the cooling cavity is subjected to resistance, turbulent flow is generated, the flowing time of the water in the cooling cavity is prolonged, and the heat exchange effect is improved.

Description

Technical field:

[0001] The utility model relates to the technical field of fan processing equipment, and more specifically to a cooling device for an environmentally friendly oil-free fan. Background technology:

[0002] Existing oil-free fans generally include magnetic levitation fans or air levitation fans, and the biggest problem with such fans when they are in operation is the high temperature generated during operation. The existing method is to form a large-area annular groove on the outer wall of the fan body, and then weld and fix an outer casing on the outer wall. The outer casing is connected to a liquid inlet head and a liquid outlet head, and then water is passed through to fill the annular groove with water for heat exchange. There is no other structure inside, so that after the water enters, it will be immediately discharged from the liquid outlet head, which makes the heat exchange efficiency of the water low and the heat exchange effect is not ideal. Utility model content:

[0003] The purpose of the utility model is to address the deficiencies of the prior art and to provide an environmentally friendly oil-free fan cooling device, which, through the spiral protrusion guide formed on the inner wall of the outer annular sleeve and the multiple radially extending annular protrusions formed on the inner wall of the annular cooling groove, makes the flow of water in the cooling chamber encounter resistance and generate turbulence, thereby increasing the flow time of water in the cooling chamber and improving the heat exchange effect.

[0004] The technical solutions of the utility model are as follows:

[0005] A cooling device for an environmentally friendly oil-free fan comprises a fan body, an annular cooling groove is formed on the middle outer wall of the fan body, an outer annular sleeve is fixed on the middle outer wall of the fan body, the outer annular sleeve covers the annular cooling groove, the outer annular sleeve and the annular cooling groove form a cooling cavity, a spiral protrusion guide is formed on the inner wall of the outer annular sleeve, an upwardly extending water inlet connector is formed on the upper outer wall of the left end of the outer annular sleeve, and a downwardly extending water outlet connector is formed on the lower outer wall of the right end of the outer annular sleeve, the water outlet connector and the water inlet connector are communicated with the cooling cavity.

[0006] A plurality of radially extending annular protrusions are formed on the inner side wall of the annular cooling groove, and the outer side wall of the annular protrusion is close to the inner side wall of the spiral protrusion guide.

[0007] Annular grooves are formed on the outer wall of the fan body at the left and right ends of the annular cooling groove, radial extension parts are formed on the inner walls of the left and right ends of the outer annular sleeve, and a first annular groove is formed on the inner wall of the radial extension part. The sealing ring is nested in the corresponding annular groove and the first annular groove, and the outer annular sleeve is fixedly connected to the outer wall of the fan body by bolts.

[0008] The beneficial effects of the utility model are:

[0009] By means of a spiral raised guide formed on the inner wall of the outer annular sleeve and a plurality of radially extending annular raised portions formed on the inner wall of the annular cooling groove, the flow of water in the cooling cavity is resisted and turbulence is generated, thereby increasing the flow time of water in the cooling cavity and improving the heat exchange effect. Description of the drawings:

[0010] Figure 1 It is a partial structural schematic diagram of the utility model;

[0011] Figure 2 Another partial structural schematic diagram of the utility model;

[0012] Figure 3 for Figure 2 A partial enlarged view of

[0013] Figure 4 It is a schematic diagram of the local structure between the fan body and the lower fixing seat;

[0014] Figure 5 It is a schematic diagram of the end face of the heat-conducting sleeve. Specific implementation method:

[0015] Example 1, see Figure 1 As shown, a cooling device for an environmentally friendly oil-free fan comprises a fan body 10, a volute is fixed on the left end face of the fan body 10, and the output shaft of the fan body 10 extends into the volute and is fixed with an impeller. An annular cooling groove 11 is formed on the middle outer wall of the fan body 10, an outer annular sleeve 20 is fixed on the middle outer wall of the fan body 10, the outer annular sleeve 20 covers the annular cooling groove 11, and the outer annular sleeve 20 and the annular cooling groove 11 form a cooling cavity, a spiral protruding guide portion 21 is formed on the inner wall of the outer annular sleeve 20, an upwardly extending water inlet connector 22 is formed on the upper outer wall of the left end of the outer annular sleeve 20, and a downwardly extending water outlet connector 23 is formed on the lower outer wall of the right end of the outer annular sleeve 20, and the water outlet connector 23 and the water inlet connector 22 are connected to the cooling cavity. A plurality of radially extending annular protrusions 111 are formed on the inner side wall of the annular cooling groove 11 , and the outer side wall of the annular protrusion 111 is close to the inner side wall of the spiral protrusion guide portion 21 .

[0016] Annular grooves are formed on the outer wall of the fan body 10 at the left and right ends of the annular cooling groove 11, radial extension parts 24 are formed on the inner walls at the left and right ends of the outer annular sleeve 20, and a first annular groove is formed on the inner wall of the radial extension part 24. The sealing ring 1 is nested in the corresponding annular groove and the first annular groove, and the outer annular sleeve 20 is fixedly connected to the outer wall of the fan body 10 by bolts.

[0017] The bottom surface of the right end of the fan body 10 is formed with two protrusions 12, and the protrusions 12 are fixedly connected to the lower support rod 40 by bolts. The bottom of the lower support rod 40 is fixed with a lower fixing seat 41, and the top surface of the left part of the lower fixing seat 41 is fixed with two vertical rods 42, and the upper parts of the two vertical rods 42 are fixedly connected to the front and rear side walls of the left part of the fan body 10 by bolts. The lower fixing seat 41 is fixed to the fan body 10 at three points through the lower support rod 40 and the two vertical rods 42, and the fixing is firm and stable, and the installation is convenient.

[0018] Example 2, see Figures 2 to 5 As shown, a cylindrical heat-conducting sleeve 30 composed of two semicircular heat-conducting sheets is pressed against the inner side wall of the annular cooling groove 11, and a sealing groove is formed between the side walls of the upper and lower ends of the two semicircular heat-conducting sheets, and the sealing strip is nested in the corresponding two sealing grooves. At the same time, arc-shaped sealing strips are nested in the arc grooves formed on the left and right end surfaces of the two semicircular heat-conducting sheets. When installing, firstly, a heat-conducting glue is applied on the inner side wall of the annular cooling groove 11 (general heat-conducting glue has a sealing effect and a high temperature resistance effect, which can generally reach 200 ℃), then, first install a semicircular heat conducting sheet, then embed the sealing strips in the sealing grooves at both end edges thereof, and then install another semicircular heat conducting sheet, wherein the ends of the two sealing strips will be tightly attached to one end of the corresponding arc-shaped sealing strip, and the inner side wall of the heat conducting sheet will be pressed against the thermal conductive glue on the inner side wall of the annular cooling groove 11 for adhesion. At the same time, during installation, excess thermal conductive glue will be squeezed to the left and right ends of the annular cooling groove 11, which can fill the ends of the two sealing strips with the corresponding end of the arc-shaped sealing strip to achieve sealing.

[0019] A plurality of radially extending annular protrusions 111 are formed on the outer wall of the heat-conducting sleeve 30 (a plurality of arc-shaped protrusions are formed on the outer wall of each heat-conducting plate, and the two protrusions corresponding to the two heat-conducting plates constitute the annular protrusion 111), and the outer wall of the annular protrusion 111 is close to the inner wall of the spiral protrusion guide portion 21.

[0020] The rest is the same as in Example 1.

[0021] In the above embodiments, the water entering from the water inlet connector 22 is blocked by the annular protrusion 111 and the spiral protrusion guide 21, so that turbulence is achieved, thereby increasing the time the water is in the cooling chamber and improving the heat exchange effect. Then, the water is discharged from the water outlet connector 23, wherein the water inlet connector 22 is connected to the water inlet pipe, and the water outlet connector 23 is connected to the water outlet pipe. The water inlet pipe and the water outlet pipe are connected to an external water tank, and the other end of the water inlet pipe is connected to the water outlet end of the water pump installed on the water tank. The water inlet end of the water pump extends into the water in the water tank. Through the operation of the water pump, the circulation of the water can be achieved to achieve heat exchange. A temperature sensor is also installed in the water tank to detect the temperature in the water tank at all times. When the water temperature is higher than the set value, it is necessary to change the water, or install a refrigeration device to refrigerate the water in the water tank. The evaporation pipe of the refrigeration device can be extended into the water tank for direct heat exchange. The structure of the refrigeration device can adopt the existing conventional structure, and its principle is the same as that of the existing conventional air-conditioning refrigeration or refrigerator refrigeration, which will not be described in detail here.

[0022] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A cooling device for an environmentally friendly oil-free fan, comprising a fan body (10), characterized in that: An annular cooling groove (11) is formed on the middle outer wall of the fan body (10), an outer annular sleeve (20) is fixed on the middle outer wall of the fan body (10), the outer annular sleeve (20) covers the annular cooling groove (11), the outer annular sleeve (20) and the annular cooling groove (11) form a cooling cavity, a spiral protruding guide portion (21) is formed on the inner wall of the outer annular sleeve (20), an upwardly extending water inlet connector (22) is formed on the upper outer wall of the left end of the outer annular sleeve (20), and a downwardly extending water outlet connector (23) is formed on the lower outer wall of the right end of the outer annular sleeve (20), and the water outlet connector (23) and the water inlet connector (22) are in communication with the cooling cavity.

2. The cooling device of an environmentally friendly oil-free fan according to claim 1 is characterized in that: A plurality of radially extending annular protrusions (111) are formed on the inner side wall of the annular cooling groove (11), and the outer side wall of the annular protrusion (111) is close to the inner side wall of the spiral protrusion guide (21).

3. The cooling device of an environmentally friendly oil-free fan according to claim 1 is characterized in that: A cylindrical heat-conducting sleeve (30) composed of two semicircular heat-conducting sheets is pressed against the inner wall of the annular cooling groove (11); the inner wall of the heat-conducting sleeve (30) is tightly attached to the inner wall of the annular cooling groove (11); a plurality of radially extending annular protrusions (111) are formed on the outer wall of the heat-conducting sleeve (30); the outer wall of the annular protrusion (111) is close to the inner wall of the spiral protrusion guide (21).

4. The cooling device of an environmentally friendly oil-free fan according to claim 1 is characterized in that: Annular grooves are formed on the outer wall of the fan body (10) at the left and right ends of the annular cooling groove (11), radial extension parts (24) are formed on the inner walls at the left and right ends of the outer annular sleeve (20), and a first annular groove is formed on the inner wall of the radial extension part (24). The sealing ring (1) is nested in the corresponding annular groove and the first annular groove, and the outer annular sleeve (20) is fixedly connected to the outer wall of the fan body (10) by bolts.

5. The cooling device of an environmentally friendly oil-free fan according to claim 1 is characterized in that: A protrusion (12) is formed on the bottom surface of the right end of the fan body (10), and the protrusion (12) is fixedly connected to a lower support rod (40) by bolts. A lower fixing seat (41) is fixed to the bottom of the lower support rod (40), and two vertical rods (42) are fixed to the top surface of the left part of the lower fixing seat (41), and the upper parts of the two vertical rods (42) are fixedly connected to the front and rear side walls of the left part of the fan body (10) by bolts.

6. The cooling device of an environmentally friendly oil-free fan according to claim 1 is characterized in that: A volute is fixed to the left end surface of the fan body (10), and an output shaft of the fan body (10) extends into the volute and is fixed with an impeller.

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