Heat exchanger and air conditioning system with same

Abstract

The utility model provides a heat exchanger and an air-conditioning system with the heat exchanger, the heat exchanger comprises at least two heat exchange parts, each heat exchange part is provided with a plurality of heat exchange tubes and heat exchange fins, the heat exchange parts extend along the extending direction of the heat exchange tubes, the two adjacent heat exchange parts are arranged at intervals along the extending direction of the heat exchange parts, and the heat exchange fins are arranged at intervals along the extending direction of the heat exchange parts. Heat exchange fins are arranged on the outer walls of the heat exchange tubes; wherein the at least two heat exchange parts are communicated in sequence, and the projection of the heat exchange fins of at least one heat exchange part and the projection of the heat exchange fins of the other heat exchange parts in the extending direction of the heat exchange parts do not coincide. According to the technical scheme, the problems that in the prior art, a heat exchanger is poor in drainage effect, and heat exchange is affected can be solved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and more specifically, to a heat exchanger and an air conditioning system having the same. Background Technology

[0002] Currently, evaporators and condensers are important components of air conditioning systems as heat exchangers. A heat exchanger consists of multiple heat exchange tubes, which are used to handle the two-phase switching of the refrigerant and thus achieve heat exchange. Multiple fins are usually installed on the outer wall of the heat exchange tubes to improve the heat exchange effect.

[0003] As heat is exchanged in the heat exchanger, condensate will accumulate on the surface of the fins and heat exchange tubes. Especially when the heat exchanger is used as an evaporator, the condensate flows down the fins and heat exchange tubes from top to bottom. However, this condensate flow is relatively long, and the condensate flows to the lower half of the heat exchanger. This limits the drainage capacity of the heat exchange tubes and fins in the lower half of the heat exchanger. If drainage is not timely, water will easily accumulate, which will affect the contact area between the heat exchanger fins and the air, and thus seriously affect the heat exchange performance of the heat exchanger. Utility Model Content

[0004] This utility model provides a heat exchanger and an air conditioning system thereon to solve the problem in the prior art where the heat exchange fins of the heat exchanger have poor drainage effect, which affects the heat exchange of the heat exchanger.

[0005] According to one aspect of the present invention, a heat exchanger is provided, comprising: at least two heat exchange sections, each heat exchange section having a plurality of heat exchange tubes and heat exchange fins, the heat exchange sections extending along an extension direction perpendicular to the extension direction of the heat exchange tubes, two adjacent heat exchange sections being spaced apart along the extension direction of the heat exchange sections, and heat exchange fins being provided on the outer wall of the heat exchange tubes; wherein, at least two heat exchange sections are sequentially connected, and at least one heat exchange section does not overlap with the projection of the other heat exchange sections in the extension direction of the heat exchange sections.

[0006] By applying the technical solution of this utility model, when refrigerant flows through the heat exchange tube for heat exchange, the condensate formed on the surface of the heat exchange fins and heat exchange tube can be discharged under the action of gravity. Since the heat exchanger provided in this application has multiple heat exchange sections, the projections of the heat exchange fins of one heat exchange section and the others do not coincide in the extension direction of the heat exchange section. This allows the heat exchanger of the conventional solution to be divided into multiple heat exchange sections. Multiple sections shorten the flow path of the condensate, and the condensate in each heat exchange section will not flow onto the heat exchange fins of other heat exchange sections. This prevents condensate from accumulating on the bottom heat exchange fins without changing the structure of the heat exchange tubes and fins, ensuring the contact area between the heat exchange fins and the air, thereby guaranteeing the overall heat exchange performance of the heat exchanger. Furthermore, condensate flow channels are provided on the heat exchange fins, and the extension direction of the condensate flow channels is the same as the extension direction of the heat exchange section.

[0007] Furthermore, the heat exchange fins are provided with multiple drain holes, which cooperate to form a condensate flow channel, and the projections of the heat exchange fins of the multiple heat exchange sections on the condensate flow path do not overlap.

[0008] Furthermore, the heat exchanger also includes a manifold, and there are two manifolds. The two manifolds are respectively located at both ends of the heat exchange tube. The manifold has a collecting section and a connecting section. The collecting section is set one-to-one with the heat exchange part. Multiple heat exchange tubes in the same heat exchange part are connected to the collecting section. The multiple heat exchange tubes are set at intervals along the extension direction of the collecting section. Two adjacent collecting sections are connected through the connecting section.

[0009] Furthermore, the connecting section has a straight flow section, with a flow collection section connected to both ends of the straight flow section, and the axis of the straight flow section is perpendicular to the axis of the flow collection section.

[0010] Furthermore, the axis of the connecting section and the axis of the collecting section have an included angle α, where 0° < α < 90°.

[0011] Furthermore, the distance between the axes of two adjacent collector sections is d, and the width of the heat exchange tube along the extension direction perpendicular to the collector section is D, where 0.9D≤d≤1.5D.

[0012] Furthermore, the total number of heat exchange tubes is N, and the number of heat exchange tubes in each heat exchange section is n, where N / 6≤n≤N / 2, and both N and n are positive integers.

[0013] Furthermore, when the number of heat exchangers is greater than or equal to three, the multiple heat exchangers are arranged sequentially at intervals along the same direction.

[0014] Furthermore, at least one manifold is provided with multiple baffles, which are spaced apart along the extension direction of the heat exchange tube, and the manifolds on both sides of the baffles are connected to the heat exchange tube.

[0015] According to another aspect of the present invention, an air conditioning system is provided, which includes the heat exchanger described above.

[0016] By applying the above-mentioned heat exchanger to the air conditioning system, it can be ensured that condensate will not accumulate at the bottom of the heat exchanger and condenser in the air conditioning system, thus ensuring the overall heat exchange efficiency of the air conditioning system. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of the heat exchanger provided by this utility model is shown;

[0019] Figure 2 A schematic diagram of the manifold structure provided in the first embodiment of this utility model is shown;

[0020] Figure 3 A schematic diagram of the manifold structure provided in the second embodiment of this utility model is shown.

[0021] The above figures include the following reference numerals:

[0022] 100. Heat exchange section; 110. Heat exchange tube;

[0023] 200. Manifold; 210. Manifold section; 220. Connecting section; 230. Baffle. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] like Figure 1 As shown, this embodiment of the present invention provides a heat exchanger, which includes at least two heat exchange sections 100. Each heat exchange section 100 has a plurality of heat exchange tubes 110 and heat exchange fins. The heat exchange sections 100 extend along a direction perpendicular to the extension of the heat exchange tubes 110. Two adjacent heat exchange sections 100 are spaced apart along the extension direction of the heat exchange section 100. The outer wall of the heat exchange tubes 110 is provided with heat exchange fins. The at least two heat exchange sections 100 are sequentially connected, and the projections of the heat exchange fins of at least one heat exchange section 100 and the other heat exchange sections 100 in the extension direction of the heat exchange section 100 do not coincide.

[0026] When the refrigerant flows through the heat exchange tube 110 for heat exchange, the condensate formed on the surface of the heat exchange fins and the heat exchange tube 110 can be discharged under the action of gravity. Since the heat exchanger provided in this application has multiple heat exchange sections 100, the projections of the heat exchange fins of one heat exchange section 100 and the other heat exchange sections in the extension direction of the heat exchange section 100 do not coincide. In this way, the heat exchanger of the conventional technical solution can be divided into multiple heat exchange sections 100. The multiple heat exchanger sections can shorten the flow path of the condensate, and the condensate in each heat exchange section 100 will not flow to the heat exchange fins of other heat exchange sections 100. In this way, without changing the structure of the heat exchange tube and the heat exchange fins, the accumulation of condensate on the bottom heat exchange fins can be prevented, the contact area between the heat exchange fins and the air can be guaranteed, and thus the overall heat exchange performance of the heat exchanger can be guaranteed.

[0027] Specifically, the heat exchanger provided in this application can be a tubular heat exchanger, in which the heat exchange tube 110 is a round tube and the round tube is arranged through heat exchange fins; or it can be a microchannel heat exchanger, in which the heat exchange tube 110 is a flat tube and heat exchange fins are arranged between the flat tubes or the flat tube is arranged through heat exchange fins.

[0028] Specifically, the heat exchanger provided in this application can be installed vertically or at an angle, as long as it allows condensate to flow from top to bottom along the condensate channel.

[0029] In this application, a condensate flow channel is provided on the heat exchange fins, and the extension direction of the condensate flow channel is the same as the extension direction of the heat exchange section 100, so that the condensate can be discharged from the heat exchange fins.

[0030] In some feasible embodiments of this application, the heat exchange fins are provided with multiple drain holes, which cooperate to form a condensate flow channel. The projections of the heat exchange fins of the multiple heat exchange sections 100 on the condensate flow path do not overlap. With this configuration, the heat exchange fins of the multiple heat exchange sections 100 will not overlap on the condensate flow path, which can increase the spacing between the condensate flow channel and the heat exchange fins of the other heat exchange sections 100, ensuring that the condensate flow does not interfere with the flow and preventing condensate from flowing from one heat exchange section 100 to other heat exchange sections 100.

[0031] Specifically, the drainage hole can be a structure such as a window hole or a round hole for drainage.

[0032] Furthermore, the heat exchanger also includes two manifolds 200, which are respectively located at both ends of the heat exchange tubes 110. Each manifold 200 has a collecting section 210 and a connecting section 220. The collecting section 210 corresponds one-to-one with the heat exchange unit 100. Multiple heat exchange tubes 110 in the same heat exchange unit 100 are connected to the collecting section 210. The multiple heat exchange tubes 110 are spaced apart along the extension direction of the collecting section 210, and adjacent collecting sections 210 are connected by the connecting section 220. Through the above arrangement, the two manifolds 200 can connect multiple heat exchange tubes 110, and the connecting section 220 can connect and support the collecting section 210, allowing multiple heat exchange tubes 110 to be connected to the air conditioning system for heat exchange.

[0033] Reference Figure 2 As shown, in the first embodiment of this application, the connecting section 220 has a straight flow section, and both ends of the straight flow section are respectively connected to the collecting section 210. The axis of the straight flow section is perpendicular to the axis of the collecting section 210. This arrangement can ensure that the condensate flow channels between the two heat exchange sections 100 do not interfere with each other, and minimize the overall height and thickness of the heat exchanger, thereby reducing the space occupied by the heat exchanger.

[0034] Furthermore, the straight flow section is provided with turning flow sections at both ends. The turning flow section is a 90° bend and is used to connect with the collection section 210.

[0035] Reference Figure 3 As shown, in the second embodiment of this application, the axis of the connecting section 220 and the axis of the collecting section 210 have an angle α. This arrangement, compared to the first embodiment, reduces the turning radius of the fluid flowing through the connecting section 220, lowers the flow resistance, and ensures efficient fluid flow. Specifically, 0° < α < 90°, and α can be set to 20°, 45°, or 60°, etc.

[0036] Furthermore, in the second embodiment of this application, the connecting segment 220 can be formed by directly connecting two bend flow sections, wherein the bend flow section is an elbow with a bending angle greater than 90°.

[0037] Specifically, in this application, the distance between the axes of two adjacent flow collection sections 210 is d, and the width of the heat exchange tube 110 along the extension direction perpendicular to the flow collection section 210 is D, where 0.9D ≤ d ≤ 1.5D. When d is less than 0.9D, the distance between the axes of two adjacent flow collection sections 210 is too small, and the condensate flow channel of one heat exchange section 100 may interfere with the heat exchange fins of another heat exchange section 100; when d is greater than 1.5D, the distance between the axes of two adjacent flow collection sections 210 is too large, which will affect the overall space occupied by the radiator. By setting 0.9D ≤ d ≤ 1.5D, this application can prevent interference between the condensate flow channels of multiple heat exchange sections 100 while ensuring the overall space occupied by the radiator. Specifically, the distance d between the axes of two adjacent flow collection sections 210 can be set to 0.9D, 1.2D, or 1.5D.

[0038] Furthermore, when each heat exchange section 100 has the same number of heat exchange tubes 110, the total number of heat exchange tubes 110 is N, and the number of heat exchange tubes 110 in each heat exchange section 100 is n, where N / 6 ≤ n ≤ N / 2, and both N and n are positive integers. This arrangement ensures that the number of heat exchange tubes 110 in each heat exchange section 100 is neither too many nor too few. When n < N / 6, a large number of heat exchange sections 100 are required, making processing cumbersome and excessively increasing the space occupied by the heat exchanger. When n > N / 2, the heat exchanger is not segmented, and the condensate flow channel cannot be separated. Specifically, in this application, n can be set to N / 6, N / 5, N / 4, N / 3, or N / 2.

[0039] It is understandable that each heat exchange section 100 may be equipped with a different number of heat exchange tubes 110.

[0040] Specifically, when the number of heat exchange sections 100 is greater than or equal to three, the multiple heat exchange sections 100 are arranged sequentially at intervals along the same direction. With the above arrangement, the condensate flow channel of each heat exchange section 100 will not interfere with the heat exchange fins of the other heat exchange sections 100, and there will be no condensate flow between the spaced-apart heat exchange sections 100, so as to ensure the heat exchange effect of the heat exchanger.

[0041] In this application, at least one manifold 200 is provided with multiple baffles 230, which are spaced apart along the extension direction of the heat exchange tube 110. The manifolds 200 on both sides of the baffles 230 are connected to the heat exchange tube 110. With the above arrangement, when the refrigerant fluid flows from one manifold 200 to another manifold 200 in one direction, the fluid will be stopped by the baffles 230 and flow to the other manifold 200, thus realizing the reversal of the fluid between the inlet and outlet of the manifold.

[0042] This application also provides an air conditioning system including the aforementioned heat exchanger. By applying the aforementioned heat exchanger to the air conditioning system, it can be ensured that condensate will not accumulate at the bottom of the heat exchanger and condenser in the air conditioning system, thus ensuring the overall heat exchange efficiency of the air conditioning system.

[0043] Specifically, the air conditioning system also includes a fan and a fan coil unit. The fan coil unit is connected to the manifold 200 of the heat exchanger to drive the air circulation around the heat exchanger to generate convection for heat exchange. The fan coil unit can be equipped with a filter structure, such as a filter screen, to reduce the dirt blockage of the heat exchange tube 110 and ensure the heat exchange effect of the heat exchanger.

[0044] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0045] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0046] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0047] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0048] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A heat exchanger, characterized in that, The heat exchanger includes: At least two heat exchange sections (100), each heat exchange section (100) having a plurality of heat exchange tubes (110) and heat exchange fins, the heat exchange section (100) extending in a direction perpendicular to the extension of the heat exchange tubes (110), two adjacent heat exchange sections (100) being spaced apart in the extension direction of the heat exchange section (100), and the heat exchange fins being provided on the outer wall of the heat exchange tubes (110); At least two of the heat exchange sections (100) are connected in sequence, and at least one of the heat exchange sections (100) does not overlap with the projection of the other heat exchange sections (100) in the extension direction of the heat exchange section (100).

2. The heat exchanger according to claim 1, characterized in that, The heat exchange fins are provided with condensate channels, and the extension direction of the condensate channels is the same as the extension direction of the heat exchange section (100).

3. The heat exchanger according to claim 2, characterized in that, The heat exchange fins are provided with multiple drain holes, which cooperate to form the condensate flow channel. The projections of the heat exchange fins of the multiple heat exchange units (100) on the condensate flow path do not overlap.

4. The heat exchanger according to claim 1, characterized in that, The heat exchanger also includes two manifolds (200), which are respectively located at both ends of the heat exchange tube (110). Each manifold (200) has a collecting section (210) and a connecting section (220). The collecting section (210) is arranged in a one-to-one correspondence with the heat exchange part (100). Multiple heat exchange tubes (110) of the same heat exchange part (100) are connected to the collecting section (210). Multiple heat exchange tubes (110) are spaced apart along the extension direction of the collecting section (210). Two adjacent collecting sections (210) are connected through the connecting section (220).

5. The heat exchanger according to claim 4, characterized in that, The connecting section (220) has a straight flow section, and the two ends of the straight flow section are respectively connected to the collecting section (210). The axis of the straight flow section is perpendicular to the axis of the collecting section (210).

6. The heat exchanger according to claim 4, characterized in that, The axis of the connecting section (220) and the axis of the collecting section (210) have an angle α, where 0° < α < 90°.

7. The heat exchanger according to claim 4, characterized in that, The distance between the axes of two adjacent collection sections (210) is d, and the width of the heat exchange tube (110) along the extension direction perpendicular to the collection section (210) is D, where 0.9D≤d≤1.5D.

8. The heat exchanger according to claim 1, characterized in that, The total number of heat exchange tubes (110) is N, and the number of heat exchange tubes (110) in each heat exchange section (100) is n, where N / 6≤n≤N / 2, and N and n are both positive integers.

9. The heat exchanger according to claim 1, characterized in that, When the number of heat exchange units (100) is greater than or equal to 3, the multiple heat exchange units (100) are arranged sequentially at intervals along the same direction.

10. The heat exchanger according to claim 4, characterized in that, At least one of the manifolds (200) is provided with a plurality of baffles (230), which are spaced apart along the extension direction of the heat exchange tube (110). The manifolds (200) on both sides of the baffles (230) are connected to the heat exchange tube (110).

11. An air conditioning system, characterized in that, The air conditioning system includes the heat exchanger according to any one of claims 1 to 10.

Images