CN220624470U - Evaporative condenser and unit - Google Patents

Abstract

The application relates to the technical field of refrigeration, in particular to an evaporative condenser and a unit. The evaporative condenser comprises a plurality of heat exchange pipes, each heat exchange pipe extends along a first preset direction, the plurality of heat exchange pipes are arranged at intervals along a second preset direction and are sequentially communicated to form coil pipes, the number of the coil pipes is multiple, and the plurality of coil pipes are arranged at intervals along a third preset direction to form coil pipe units. The length of the coil unit along the first preset direction is smaller than that of the coil unit along the third preset direction, and the first preset direction, the second preset direction and the third preset direction are perpendicular to each other. The application provides an evaporative condenser and unit, has solved the great problem of pressure drop of refrigerant in the heat exchange coil in the current evaporative condenser unit.

Description

Evaporative condenser and unit

Technical Field

The application relates to the technical field of refrigeration, in particular to an evaporative condenser and a unit.

Background

The evaporative condenser is a heat exchange device for condensing and cooling and mainly comprises a heat exchange coil and a spraying device, wherein spraying water of the spraying device can absorb heat of high-temperature refrigerant in the heat exchange coil, so that gaseous refrigerant in the pipe is cooled into liquid refrigerant.

At present, according to actual heat dissipation needs, evaporative condenser unit can design into multiple model, and when the model of unit is great, can set up a plurality of evaporative condensers along the length direction of unit. In addition, the existing heat exchange coils are designed according to the length of the unit, namely, the length of the heat exchange coils can be prolonged along with the increase of the number of the evaporative condensers. However, the longer length of the heat exchange coil results in increased resistance to refrigerant flow within the coil and thus increased pressure drop across the refrigerant, and the initial pressure of the refrigerant from the compressor outlet must be increased to overcome the resistance to refrigerant flow. As such, power consumption of the compressor increases, thereby reducing the cooling coefficient of the unit.

Disclosure of Invention

Based on this, it is necessary to provide an evaporative condenser and a unit to solve the above problems.

The application provides an evaporative condenser, which comprises a plurality of heat exchange tubes, wherein each heat exchange tube extends along a first preset direction, the plurality of heat exchange tubes are arranged at intervals along a second preset direction and are sequentially communicated to form coils, the number of the coils is multiple, and the plurality of coils are arranged at intervals along a third preset direction to form coil units; the length of the coil unit along the first preset direction is smaller than the length of the coil unit along the third preset direction, and the first preset direction, the second preset direction and the third preset direction are perpendicular to each other in pairs.

In one embodiment, two adjacent heat exchange tubes in each coil are staggered with each other along the third preset direction.

In one embodiment, two adjacent heat exchange tubes in one of the coils and one adjacent heat exchange tube in the adjacent coil are arranged in an equilateral triangle.

In one embodiment, the coil pipe further comprises a connecting elbow, and two ends of the connecting elbow are respectively communicated with two adjacent heat exchange tubes.

In one embodiment, the coil units have a length in the third predetermined direction ranging from 900mm to 1100mm; the length range of the coil unit along the first preset direction is 600mm-800mm; and/or the pipe diameter range of the heat exchange pipe is 9mm-10mm.

In one embodiment, the evaporative condenser further comprises a spraying unit, wherein the spraying unit is arranged on one side of the coil unit, extends along the third preset direction and is used for spraying cooling water to the coil unit.

In one embodiment, the coil unit further comprises a gas collecting tube and a liquid collecting tube, one end of the coil is communicated with the gas collecting tube, the other end of the coil is communicated with the liquid collecting tube, and the gas collecting tube is arranged at one end, close to the spraying unit, of the liquid collecting tube along the second preset direction.

In one embodiment, the evaporative condenser further comprises a fan, and the coil unit is connected to one side or both sides of the fan along the first preset direction.

In one embodiment, the heat exchange tube is a copper tube, an aluminum tube, or a steel tube.

The application also provides a unit comprising the evaporative condenser according to any one of the embodiments, wherein the number of the evaporative condensers is multiple, and the multiple evaporative condensers are spliced and arranged along the third preset direction; the refrigerant enters the coil pipe from the gas collecting pipe and is discharged from the gas collecting pipe after exchanging heat with the outside in the coil pipe.

Compared with the prior art, the evaporative condenser and the unit that this application provided are less than the coil unit along the length of the third direction of predetermineeing through setting up the length of coil unit along first direction of predetermineeing, compare in the length direction extension of heat exchange tube along evaporative condenser in current coil pipe, the heat exchange tube that this application provided extends along width direction, and its length is shorter for the length of the coil pipe of a plurality of heat exchange tube intercommunication formation is also shorter. The reduction of the coil length greatly reduces the pressure drop of the refrigerant in the coil, so that the refrigerating efficiency of the whole evaporative condenser is greatly improved, and meanwhile, when a plurality of evaporative condensers are arranged according to the unit requirement, the accumulation of the coil length is reduced, so that the pressure drop of the refrigerant in the coil is reduced.

Drawings

In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings that are required to be used in the description of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a top view of an evaporative condenser according to an embodiment of the present application;

FIG. 2 is a front view of an evaporative condenser according to an embodiment provided herein;

FIG. 3 is a side view of a coil unit according to one embodiment provided herein;

fig. 4 is a side view of an assembly according to an embodiment provided herein.

The symbols in the drawings are as follows:

100. a unit; 10. an evaporative condenser; 11. a coil unit; 111. a coiled pipe; 1111. a heat exchange tube; 1112. a connecting elbow; 112. a gas collecting tube; 113. a liquid collecting pipe; 12. a blower.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used in the description of the present application for purposes of illustration only and do not represent the only embodiment.

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. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

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

Unless defined otherwise, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. The term "and/or" as used in the specification of this application includes any and all combinations of one or more of the associated listed items.

The evaporative condenser is a heat exchange device for condensing and cooling and mainly comprises a heat exchange coil and a spraying device, wherein spraying water of the spraying device can absorb heat of high-temperature refrigerant in the heat exchange coil, so that gaseous refrigerant in the pipe is cooled into liquid refrigerant.

At present, according to actual heat dissipation needs, evaporative condenser unit can design into multiple model, and when the model of unit is great, can set up a plurality of evaporative condensers along the length direction of unit. In addition, the existing heat exchange coils are designed according to the length of the unit, namely, the length of the heat exchange coils can be prolonged along with the increase of the number of the evaporative condensers. However, the longer length of the heat exchange coil results in increased resistance to refrigerant flow within the coil and thus increased pressure drop across the refrigerant, and the initial pressure of the refrigerant from the compressor outlet must be increased to overcome the resistance to refrigerant flow. As such, power consumption of the compressor increases, thereby reducing the cooling coefficient of the unit.

Referring to fig. 1-4, in order to solve the above-mentioned problems, the present application provides an evaporative condenser 10, wherein the evaporative condenser 10 can be used alone or a plurality of evaporative condensers 10 can be spliced with each other to form a unit 100.

Referring to fig. 1 and 2, the evaporative condenser 10 provided in the present application includes a plurality of heat exchange tubes 1111, each heat exchange tube 1111 extends along a first preset direction, the plurality of heat exchange tubes 1111 are arranged at intervals along a second preset direction and are sequentially communicated to form coil units 111, the number of the coil units 111 is plural, and the plurality of coil units 111 are arranged at intervals along a third preset direction to form coil units 11. Each coil 111 can act as a flow path for the flow of refrigerant. The first preset direction, the second preset direction and the third preset direction are perpendicular to each other.

For more clearly describing the technical solution of the present application, a first preset direction (i.e. the width direction of the evaporative condenser 10, denoted by W), a second preset direction (i.e. the height direction of the evaporative condenser 10, denoted by H), and a third preset direction (i.e. the length direction of the evaporative condenser 10, denoted by L) are defined as shown in fig. 1-4.

Further, the length of the coil unit 11 along the first preset direction is smaller than the length of the coil unit 11 along the third preset direction, so, compared with the length direction of the heat exchange tube along the evaporative condenser in the existing coil, the heat exchange tube 1111 provided by the application extends along the width direction, the length of the heat exchange tube 1111 is shorter, the length of the coil 111 formed by the connection of the plurality of heat exchange tubes 1111 is also shorter, the pressure drop of the refrigerant in the coil 111 is greatly reduced due to the reduction of the length of the coil 111, the refrigerating efficiency of the whole evaporative condenser 10 is greatly improved, and meanwhile, when a plurality of evaporative condensers 10 are combined according to the unit 100, the accumulation of the length of the coil 111 is reduced, so that the pressure drop of the refrigerant in the coil 111 is reduced.

It should be noted that, the pressure drop of the refrigerant in the pipeline of the evaporative condenser 10 is related to the length of the coil 111, and is irrelevant to the number of coils 111, so when the heat exchange tubes 1111 extending along the width direction are arranged in the application, the number of coils 111 distributed along the length direction can be increased appropriately, so that the total flow path length in the coil unit 11 is greater than the total circulation length of the existing plurality of coils, thereby ensuring the circulation performance of the coil unit 11.

It should be further noted that the coil unit 11 in the present application is fixed by a bracket, and the size of the bracket is the same as that of the bracket for fixing a plurality of coils in the existing evaporative condenser. That is, the coil units 11 provided herein reduce the pressure drop of the refrigerant within the coil 111 over the same spatial range.

In an embodiment, the evaporative condenser 10 further includes a spraying unit (not shown) provided at one side of the coil unit 11, and extending in a third preset direction for spraying cooling water to the coil unit 11.

In this way, the cooling water sprayed by the spraying unit can better contact the coil unit 11, thereby greatly improving the heat exchange efficiency of the coil unit 11.

Further, in an embodiment, the evaporative condenser 10 further includes a water tank (not shown) disposed on a side of the coil unit 11 remote from the spray unit for receiving the heat exchanged cooling water.

In one embodiment, the evaporative condenser 10 further includes a fan 12, and the coil unit 11 is connected to one or both sides of the fan 12 along the first preset direction. The fan 12 plays a role in air suction, and can rapidly exhaust the hot and humid air subjected to heat exchange to the atmosphere, so that efficient heat transfer circulation is formed.

In one embodiment, as shown in fig. 3, the coil unit 11 further includes a gas header 112 and a liquid header 113, and one end of the coil 111 is connected to the gas header 112, and the other end is connected to the liquid header 113. Wherein refrigerant enters the coil 111 from the header 112 and is discharged from the header 113 after heat exchange (condensation) with the outside in the coil 111.

In this way, inflow and outflow of the refrigerant can be realized, wherein the number of the gas collecting pipes 112 and the liquid collecting pipes 113 can be reasonably set according to the actual liquid inlet or liquid outlet requirement.

In general, the gaseous high-temperature refrigerant enters the coil 111 through the gas collecting tube 112, when the gaseous refrigerant flows in the coil 111, the refrigerant can exchange heat with the cooling water sprayed by the spraying unit, during the period, the heat of the refrigerant is absorbed by the spraying water, a part of the spraying water with the increased temperature is changed into a gaseous state, and a great amount of heat is taken away by wind potential by utilizing the vaporization latent heat of the water, so that the heat exchange effect is greatly improved, and the other part falls into the water tank for recovery. At the same time, the gaseous refrigerant in the coil 111 is gradually cooled down to liquid refrigerant and finally discharged from the header 113.

Further, along the second preset direction, the gas collecting tube 112 is disposed at one end of the gas collecting tube 113 near the spraying unit. In this way, the cooling water sprayed by the spraying unit can better cool the high-temperature refrigerant just entering the coil 111, and rapid cooling is realized.

In one embodiment, as shown in fig. 3, two adjacent heat exchange tubes 1111 in each coil 111 are staggered with each other along a third predetermined direction. Thus, the heat exchange tube 1111 is conveniently arranged, and the space utilization rate is improved. Moreover, the heat exchange tubes 1111 arranged in a staggered manner can better contact with spray water, and the heat exchange efficiency of the coil 111 is further improved.

Further, in one embodiment, adjacent two heat exchange tubes 1111 in one coil 111 are disposed in an equilateral triangle with an adjacent heat exchange tube 1111 in an adjacent coil 111. In this way, the heat exchange tubes 1111 are more tightly and uniformly arranged, thereby further improving the space utilization rate.

Preferably, each coil 111 in an embodiment of the present application includes 16 heat exchange tubes 1111. Of course, in other embodiments, the number of heat exchange tubes 1111 in each coil 111 may be 12, 14 or 18, and the like, and may be reasonably set according to actual needs.

In one embodiment, as shown in fig. 3, the coil 111 further includes a connecting elbow 1112, and two ends of the connecting elbow 1112 are respectively connected to two adjacent heat exchange tubes 1111 in the coil 111, thereby forming a serpentine coil 111. In this way, the flow path of the refrigerant can be extended, and the refrigerant can be sufficiently condensed, so that the refrigerant is supercooled.

To ensure that the pressure drop across the refrigerant in the coil 111 in the evaporative condenser 10 is not excessive, typically neither the length nor the width of the coil unit 11 can be excessive, nor the tube diameter of the heat exchange tubes 1111 can be too small.

Specifically, the length of the coil unit 11 in the third preset direction, i.e., the length of the coil unit 11, ranges from 900mm to 1100mm. The length of the coil unit 11 in the first preset direction, i.e., the width of the coil unit 11 ranges from 600mm to 800mm. In this way, the pressure drop of the refrigerant within the coil 111 can be effectively controlled. Wherein the length of the coil unit 11 is preferably 1000mm and the width of the coil unit 11 is preferably 700mm.

However, the length of the coil unit 11 in the third preset direction may be 960mm, 980mm, 1020mm, 1040mm, or the like, and the length of the coil unit 11 in the first preset direction may be 660mm, 680mm, 720mm, 740mm, or the like, which are not illustrated herein.

Further, the heat exchange tube 1111 has a tube diameter ranging from 9mm to 10mm. In this way, the pressure drop of the refrigerant within the coil 111 can be effectively controlled. Among them, the pipe diameter of the heat exchange pipe 1111 is preferably 9.52mm.

In other embodiments, the heat exchange tube 1111 may have a tube diameter of 9.2mm, 9.4mm, 9.6mm, 9.8mm, or the like, which is not illustrated herein.

In one embodiment, the heat exchange tube 1111 is a copper tube, which has better heat conductivity and can improve the heat exchange efficiency of the heat exchange tube 1111.

In other embodiments, the heat exchange tube 1111 may also be an aluminum tube or a steel tube, etc., so that the material cost of the heat exchange tube 1111 can be reduced.

The present application further provides a unit 100, as shown in fig. 4, where the unit 100 includes the evaporative condensers 10 described in any one of the embodiments, the number of the evaporative condensers 10 is multiple, and the multiple evaporative condensers 10 are spliced and arranged along a third preset direction. For example, two, three or more evaporative condensers 10 may be provided in the stack 100.

It can be appreciated that by changing the arrangement direction of the heat exchange tubes 1111, the lengths of the heat exchange tubes 1111 and the coil 111 can be kept unchanged, so that each evaporative condenser 10 can form a relatively independent structure. Thus, when a plurality of evaporative condensers 10 are needed to be connected to form the large-sized unit 100, the large-sized unit 100 is simply spliced, the situation that the length of the conventional heat exchange tube 1111 is increased and increased due to the increase of the length of the random unit 100 is avoided, the pressure drop of the refrigerant in the coil 111 is greatly reduced, the power consumption of the compressor can be correspondingly reduced, and the integral refrigerating coefficient of the unit 100 is effectively improved.

When the unit 100 is provided with a plurality of evaporative condensers 10, the spraying units of the evaporative condensers 10 may be connected to each other, thereby facilitating the circulation of cooling water and reducing the arrangement of pipelines. Similarly, only one water tank may be provided to receive the cooling water after heat exchange of the whole unit 100.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of the present application is to be determined by the following claims.

Claims (10)

1. The evaporative condenser is characterized by comprising a plurality of heat exchange tubes (1111), wherein each heat exchange tube (1111) extends along a first preset direction, the plurality of heat exchange tubes (1111) are arranged at intervals along a second preset direction and are sequentially communicated to form coils (111), the number of the coils (111) is multiple, and the plurality of coils (111) are arranged at intervals along a third preset direction to form a coil unit (11);

the length of the coil unit (11) along the first preset direction is smaller than the length of the coil unit (11) along the third preset direction, and the first preset direction, the second preset direction and the third preset direction are perpendicular to each other in pairs.

2. The evaporative condenser according to claim 1, wherein adjacent two of the heat exchange tubes (1111) in each of the coils (111) are staggered with respect to each other along the third predetermined direction.

3. Evaporative condenser according to claim 2, characterized in that adjacent two of the heat exchange tubes (1111) in one of the coils (111) are arranged in an equilateral triangle with an adjacent one of the heat exchange tubes (1111) in an adjacent one of the coils (111).

4. The evaporative condenser according to claim 1, wherein the coil (111) further comprises a connecting elbow (1112), and two ends of the connecting elbow (1112) are respectively connected to two adjacent heat exchange tubes (1111).

5. Evaporative condenser according to claim 1, characterized in that the coil unit (11) has a length in the third preset direction ranging from 900mm to 1100mm;

the length of the coil unit (11) along the first preset direction ranges from 600mm to 800mm;

and/or the pipe diameter range of the heat exchange pipe (1111) is 9mm-10mm.

6. The evaporative condenser according to claim 1, further comprising a spray unit provided to one side of the coil unit (11), and extending in the third preset direction for spraying cooling water to the coil unit (11).

7. The evaporative condenser according to claim 6, wherein the coil unit (11) further includes a gas header (112) and a liquid header (113), one end of the coil (111) is connected to the gas header (112), the other end is connected to the liquid header (113), and the gas header (112) is disposed at an end of the liquid header (113) adjacent to the spray unit in the second preset direction.

8. Evaporative condenser according to claim 1, characterized in that it further comprises a fan (12), the coil unit (11) being connected to one or both sides of the fan (12) along the first preset direction.

9. Evaporative condenser according to claim 1, characterized in that the heat exchange tubes (1111) are copper, aluminium or steel tubes.

10. A unit comprising the evaporative condenser according to any one of claims 1 to 9, wherein the number of the evaporative condensers is plural, and the plurality of the evaporative condensers are spliced along the third preset direction;

wherein, the refrigerant enters the coil pipe (111) from the gas collecting pipe (112), and is discharged from the gas collecting pipe (113) after exchanging heat with the outside in the coil pipe (111).