CN118746204A - Spiral multi-channel cooler - Google Patents

Abstract

The invention discloses a spiral multi-flow-passage cooler, which comprises a heat exchange unit, wherein the heat exchange unit comprises an outer tube, an inner tube and a spiral tube, the outer tube is sleeved outside the inner tube, the spiral tube is arranged in a radial gap between the outer tube and the inner tube and is respectively and correspondingly attached to the inner wall surface of the inner tube and the outer wall surface of the outer tube, and the spiral tube separates the radial gap between the outer tube and the inner tube into a first spiral flow passage and a second spiral flow passage; according to the spiral multi-flow-passage cooler provided by the invention, the traditional cooling medium flow passage is changed into the first flow passage and the second flow passage which are spirally wound, so that the actual flow stroke of the cooling medium is effectively prolonged, the effective heat exchange area of the cooling medium is increased, and the cooling effect is improved; meanwhile, the whole cooler is formed by connecting a plurality of independent heat exchange units, and the structure is simpler.

Description

Spiral multi-channel cooler

Technical Field

The invention belongs to the technical field of coolers and relates to a spiral multi-channel cooler.

Background Art

A cooler is a type of heat exchange equipment, which is a device used to reduce the temperature of a fluid. It is widely used in industry, commerce and daily life. The working principle of a cooler is to use a cooling medium (such as water or air) to absorb the heat of the cooled fluid (such as oil, gas or liquid) to achieve the purpose of reducing the temperature. Common cooler forms include shell and tube coolers, plate coolers and air-cooled coolers. Among them, shell and tube coolers are commonly used in equipment in metallurgy, chemical industry, energy, food and other industries, and they play an important role. Existing shell and tube heat exchangers generally have a complex structure, and the cooling channels are mostly in a straight line. Although some will add baffles and other structures in the cooling channel to extend the flow path, the overall flow direction of the cooling medium is still in a straight line, which results in the cooling medium flow path being too short and the cooling effect being insufficient.

In order to solve the above problems, a cooler with a simpler structure but longer cooling channel is needed to improve the cooling and heat exchange effect.

Summary of the invention

In view of this, the present invention provides a spiral multi-channel cooler. The setting of the spiral tube changes the traditional cooling medium flow channel into a first flow channel and a second flow channel that are spirally intertwined with each other, effectively extending the actual flow distance of the cooling medium, and increasing the effective heat exchange area of the cooling medium, thereby improving the cooling effect; at the same time, the entire cooler is composed of multiple independent heat exchange units connected together, and the structure is simpler.

The present invention discloses a spiral multi-channel cooler, comprising a heat exchange unit, the heat exchange unit comprising an outer tube, an inner tube and a spiral tube, the outer tube is placed outside the inner tube, the spiral tube is arranged in the radial gap between the outer tube and the inner tube and respectively corresponds to the inner wall surface of the inner tube and the outer wall surface of the outer tube, the spiral tube divides the radial gap between the outer tube and the inner tube into a first flow channel and a second flow channel in a spiral shape. The spiral tube has a hollow passage, and the hollow passage of the spiral tube forms a third flow channel.

Furthermore, the helix angle of the helical tube is 45°.

Furthermore, it also includes a connecting elbow, and the heat exchange unit is provided with multiple ones, and the inner tubes corresponding to the multiple heat exchange units are connected end to end in sequence through the connecting elbow, so that the multiple inner tubes form an inner tube row with a serpentine curved structure.

Furthermore, it also includes a connecting pipe, through which the outer pipes corresponding to any adjacent heat exchange units are connected, so that a plurality of the outer pipes form a row of outer pipes that are parallel and connected to each other.

Furthermore, it also includes a head, and a head is provided at both axial ends of any of the outer tubes.

Furthermore, a first inlet is provided at the head end of the inner tube array, and a first outlet is provided at the end of the inner tube array.

Furthermore, the outer tube array is provided with a second inlet and a second outlet, the second inlet is provided close to the first outlet, and the second outlet is provided close to the first inlet.

Furthermore, it also includes a support plate, and a plurality of the support plates are arranged along the axial direction of the outer tube, and any two adjacent outer tubes are connected through the support plate.

Further, the connecting pipe is arranged at a position close to an axial end of the outer pipe.

Beneficial effects of the present invention:

The present invention discloses a spiral multi-channel cooler. The arrangement of the spiral tube changes the traditional cooling medium flow channel into a first flow channel and a second flow channel which are spirally intertwined with each other. The spiral tube is a hollow structure which constitutes a third flow channel. The three flow channels which are spirally intertwined with each other effectively extend the actual flow stroke of the cooling medium, increase the effective heat exchange area of the cooling medium, and improve the cooling effect. At the same time, the whole cooler is composed of a plurality of independent heat exchange units connected together, and the overall structure is simpler. The heat exchange units can be combined and arranged according to actual cooling needs, and the scope of application is wider.

The spiral multi-channel cooler of the present invention has a simple and reliable overall structure and excellent cooling and heat exchange effect.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is an isometric view of the present invention;

FIG2 is a schematic diagram of the main structure of the present invention;

FIG3 is a schematic structural diagram of a heat exchange unit of the present invention;

FIG. 4 is a partial enlarged view of point A in FIG. 2 .

DETAILED DESCRIPTION

It should be noted that, in the description of this specification, the terms "upper", "lower", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. The head and tail and the front and back in this embodiment are based on the order of the flow of the medium, that is, the medium that flows first is the front and the first, which can be understood by those skilled in the art and will not be elaborated here.

As shown in Figures 1-4, the present invention discloses a spiral multi-channel cooler, including a heat exchange unit 1, wherein the heat exchange unit 1 includes an outer tube 102, an inner tube 101 and a spiral tube 103, wherein the outer tube 102 is placed outside the inner tube 101, and the spiral tube 103 is arranged in the radial gap between the outer tube 102 and the inner tube 101 and respectively corresponds to the inner wall surface of the inner tube 101 and the outer wall surface of the outer tube 102, and the spiral tube 103 separates the radial gap between the outer tube 102 and the inner tube 101 into a first flow channel and a second flow channel in a spiral shape. In this embodiment, the spiral tube 103 has a hollow passage, and the hollow passage of the spiral tube 103 forms a third flow channel. As shown in the figure, in this embodiment, the inner tube 101 is a hollow tube, and the cooled fluid circulates in the inner tube 101. For example, when applied to a compressor, the compressed gas of the compressor flows in the inner tube 101. The setting of the spiral tube 103, in addition to separating the flow channels, also has the function of supporting the outer tube 102, so that the outer tube 102 and the inner tube 101 are connected. The first flow channel, the second flow channel and the third flow channel all flow in the cooling medium. The first flow channel and the second flow channel have a large contact area with the inner tube 101, and directly cool the cooled fluid. The third flow channel has a small contact area with the inner tube 101 because it separates the two flow channels, but has a large contact area with the first flow channel and the second flow channel. The cooling medium in the third flow channel is mainly used for heat exchange with the first flow channel and the second flow channel, which indirectly improves the cooling and heat exchange effect of the cooler. The present invention discloses a spiral multi-channel cooler. The spiral tube 103 changes the traditional cooling medium flow channel into a first flow channel and a second flow channel that are spirally intertwined. The spiral tube 103 is a hollow structure, which constitutes the third flow channel. The three mutually spirally intertwined flow channels effectively extend the actual flow stroke of the cooling medium, increase the effective heat exchange area of the cooling medium, and improve the cooling effect. The helical angle α of the spiral tube in this embodiment is 45°, which makes the actual stroke of the first flow channel and the second flow channel the same, and the contact area with the inner tube the same, avoiding the difference in heat exchange between the two flow channels, which leads to uneven temperature distribution, affecting the heat exchange efficiency and safe operation of the equipment. The acute angle between the tangent of the spiral line and the straight generatrix of the cylindrical surface passing through the tangent point is called the helical angle, which corresponds to the angle α in the figure. This is understandable to technicians in this field and will not be repeated here.

In this embodiment, a connecting elbow 6 is also included. The heat exchange unit 1 is provided with multiple inner tubes 101 corresponding to the multiple heat exchange units 1 are connected end to end in sequence through the connecting elbow 6, so that the multiple inner tubes 101 constitute an inner tube array with a serpentine curved structure. In this embodiment, a first inlet 2 is provided at the head end of the inner tube array, and a first outlet 3 is provided at the end of the inner tube array. As shown in the figure, the connecting elbow 6 is a semicircular tubular structure. The connecting elbow 6 connects and communicates the inner tubes 101 corresponding to each of two adjacent heat exchange units 1, forming a serpentine inner tube array. At the beginning and end of the entire tube array, two ring connection surface neck flat welding flanges with the same structural size are provided as the inlet and outlet of the fluid to be cooled, namely the first inlet and the first outlet.

In this embodiment, a connecting pipe 7 is also included, and the outer tubes 102 corresponding to any adjacent heat exchange units 1 are connected through the connecting pipe 7, so that multiple outer tubes 102 constitute a parallel and connected outer tube column. The connecting pipe 7 is arranged at a position close to the axial end of the outer tube 102. In this embodiment, a head 9 is also included, and a head 9 is arranged at both axial ends of any outer tube 102. In this embodiment, the outer tube column is provided with a second inlet 4 and a second outlet 5, the second inlet 4 is arranged near the first outlet 3, and the second outlet 5 is arranged near the first inlet 2. The setting of the head 9 makes the first flow channel and the second flow channel closed, and cooperates with the connecting pipe 7, so that the first flow channel and the second flow channel of two adjacent heat exchange units 1 can only be connected through the connecting pipe 7, and the cooling medium in the first flow channel, the second flow channel and the third flow channel is converged before the connecting pipe 7, and then flows into the next heat exchange unit 1 through the connecting pipe 7, and then is divided into three flow channels. The outer tube array in this embodiment is also connected in a serpentine shape, and the connecting pipe 7 also connects and connects the end of the outer tube 102 with the head end of the outer tube 102 of the next heat exchange unit 1. In this embodiment, the second inlet 4 is arranged close to the first outlet 3, and the second outlet 5 is arranged close to the first inlet 2, so that the flow direction of the cooling medium is opposite to the flow direction of the fluid to be cooled, so that the compressed gas and the cooling water form a counter-flow, fully perform heat exchange, and achieve a cooling effect. In this embodiment, the second inlet and the second outlet are two groups of raised face neck flat welding flanges with the same structural size. In this embodiment, in order to facilitate the flow of the cooling medium in the third flow channel, when the spiral tube is arranged, the opening direction of the spiral tube is radially outward, that is, the inlet and outlet of the spiral tube are aligned with the connecting tube, the second inlet and the second outlet in a radially corresponding manner.

In this embodiment, a support plate 8 is further included, and a plurality of the support plates 8 are arranged along the axial direction of the outer tube 102, and any two adjacent outer tubes 102 are connected by the support plate 8. As shown in the figure, the support plate 8 in this embodiment connects two adjacent outer tubes 102 to provide support. In this embodiment, the support plate 8 is arranged in the axial middle part of the outer tube 102 and the end where the connecting tube 7 is not arranged, so as to improve the structural stability of the entire cooler.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims (9)

1. A spiral multi-channel cooler, characterized in that it includes a heat exchange unit, the heat exchange unit includes an outer tube, an inner tube and a spiral tube, the outer tube is outer-mounted on the inner tube, the spiral tube is arranged in the radial gap between the outer tube and the inner tube and divides the radial gap between the outer tube and the inner tube into a first flow channel and a second flow channel in a spiral shape; the spiral tube has a hollow passage, and the hollow passage of the spiral tube forms a third flow channel. 2. The spiral multi-channel cooler according to claim 1, characterized in that the helical angle of the spiral tube is 45°. 3. The spiral multi-channel cooler according to claim 1 is characterized in that it also includes a connecting elbow, and a plurality of the heat exchange units are provided, and the inner tubes corresponding to the plurality of the heat exchange units are connected end to end in sequence through the connecting elbow, so that the plurality of the inner tubes constitute an inner tube row with a serpentine curved structure. 4. The spiral multi-channel cooler according to claim 3 is characterized in that it also includes a connecting pipe, through which the outer tubes corresponding to any adjacent heat exchange units are connected, so that a plurality of the outer tubes form a parallel and connected outer tube row. 5. The spiral multi-channel cooler according to claim 1, characterized in that it also includes a head, and both axial ends of any of the outer tubes are provided with a head. 6 . The spiral multi-channel cooler according to claim 4 , wherein a first inlet is provided at the head end of the inner tube array, and a first outlet is provided at the end end of the inner tube array. 7. The spiral multi-channel cooler according to claim 6, characterized in that the outer tube array is provided with a second inlet and a second outlet, the second inlet is provided close to the first outlet, and the second outlet is provided close to the first inlet. 8 . The spiral multi-channel cooler according to claim 1 , further comprising a support plate, wherein a plurality of the support plates are arranged along the axial direction of the outer tube, and any two adjacent outer tubes are connected via the support plate. 9 . The spiral multi-channel cooler according to claim 1 , wherein the connecting pipe is arranged at a position close to an axial end of the outer pipe.