Finned heat exchanger and air conditioner

Abstract

The utility model discloses a finned heat exchanger and an air conditioner, and relates to the technical field of heat exchangers, the finned heat exchanger comprises a heat exchange assembly, a water inlet collecting pipe and a water outlet collecting pipe, the heat exchange assembly comprises fins and a plurality of heat exchange pipes inserted in the fins in a penetrating mode, the heat exchange pipes are arranged at intervals in the vertical direction of the fins, the water inlet collecting pipe is arranged on the air outlet face of the fins, the water outlet collecting pipe is arranged on the windward face of the fins, a water inlet of each heat exchange pipe is communicated with the water inlet collecting pipe, and a water outlet of each heat exchange pipe is communicated with the water outlet collecting pipe. And a water outlet of each heat exchange pipe is communicated with the water outlet collecting pipe. According to the finned radiator, the arrangement mode of the heat exchange pipes is changed, and heat exchange media flow to the windward side from the air outlet side, so that convective heat exchange is achieved, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a fin type heat exchanger and an air conditioner. Background Art

[0002] The finned heat exchanger includes fins and heat exchange tubes inserted in the fins. Heat exchange medium flows in the heat exchange tubes. The heat of the heat exchange medium is transferred to the air flowing through the fins through the fins, thereby heating or cooling the air. At present, the arrangement of heat exchange tubes in finned heat exchangers is generally bottom-in and top-out or top-in and bottom-out, that is, the flow direction of air and the flow direction of heat exchange medium are perpendicular to each other, the heat exchange coefficient is low, and the heat exchange performance needs to be improved. Utility Model Content

[0003] The main purpose of the utility model is to provide a finned heat exchanger and an air conditioner, aiming to change the arrangement of heat exchange tubes in the heat exchanger, realize convection heat exchange, and increase heat exchange efficiency.

[0004] To achieve the above-mentioned purpose, the fin-type heat exchanger proposed in the utility model includes a heat exchange component, a water inlet header and a water outlet header. The heat exchange component includes fins and a plurality of heat exchange tubes inserted in the fins. The plurality of heat exchange tubes are arranged at intervals in the upper and lower directions of the fins. The water inlet header is arranged on the windward surface of the fin, and the water outlet header is arranged on the windward surface of the fin. The water inlet of each heat exchange tube is connected to the water inlet header, and the water outlet of each heat exchange tube is connected to the water outlet header.

[0005] In one embodiment, each of the heat exchange tubes includes a plurality of straight sections and a plurality of curved sections, the plurality of straight sections are vertically inserted in the fins, and each curved section is disposed at the ends of two adjacent straight sections to connect the two adjacent straight sections.

[0006] In one embodiment, the fin heat exchanger includes a first heat exchange component and a second heat exchange component arranged back to back, the water inlets of the heat exchange tubes in the first heat exchange component and the second heat exchange component are connected to the water inlet header, and the water outlets of the heat exchange tubes in the first heat exchange component and the second heat exchange component are connected to the water outlet header.

[0007] In one embodiment, the water inlet header and the water outlet header are disposed between the first heat exchange component and the second heat exchange component.

[0008] In one embodiment, a wind shield is provided at one end of the first heat exchange component and / or the second heat exchange component facing the other heat exchange component, and the wind shield is arranged parallel to the fin.

[0009] In one embodiment, an exhaust valve is provided at the upper end of the water inlet manifold.

[0010] In one embodiment, a filter is disposed in the water inlet manifold.

[0011] In one embodiment, the filter is detachably connected to the water inlet manifold.

[0012] In one embodiment, a drain valve is provided at the lower end of the water outlet manifold.

[0013] The utility model also provides an air conditioner, which includes the fin type heat exchanger provided above.

[0014] Unlike the traditional finned radiator, the finned radiator of the utility model changes the arrangement direction of the heat exchange tubes from top to bottom or bottom to top, by setting a water inlet header on the windward side of the fins, setting a water outlet header on the windward side of the fins, and then connecting the water inlet of the heat exchange tubes with the water inlet header, and connecting the water outlet of the heat exchange tubes with the water outlet header, so as to achieve left-in and right-out or right-in and left-out of the heat exchange medium. As a result, the heat exchange medium flows from the water inlet to the water outlet, and from the windward side to the windward side. The flow direction of the heat exchange medium and the flow direction of the air form convection, so as to achieve convection heat exchange, and convection heat exchange can prolong the contact time between the air and the heat exchange tubes, increase the heat exchange coefficient, and thus improve the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 A three-dimensional structural schematic diagram of an embodiment of a finned heat exchanger provided by the utility model;

[0017] Figure 2 A top view of an embodiment of a finned heat exchanger provided by the utility model;

[0018] Figure 3 A top view of another embodiment of the fin heat exchanger provided by the utility model.

[0019] Description of Figure Numbers:

[0020] 1. heat exchange component; 11. fin; 12. heat exchange tube; 121. straight section; 122. curved section; 2. first heat exchange component; 3. second heat exchange component; 4. water inlet header; 5. water outlet header; 6. wind shield.

[0021] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0024] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0025] The utility model provides a fin type heat exchanger.

[0026] See also Figure 1 and Figure 2 The embodiment of the fin-type heat exchanger includes a heat exchange component 1, a water inlet header 4 and a water outlet header 5. The heat exchange component 1 includes a fin 11 and a plurality of heat exchange tubes 12 inserted in the fin 11. The plurality of heat exchange tubes 12 are arranged at intervals in the upper and lower directions of the fin 11. The water inlet header 4 is arranged on the windward side of the fin 11, and the water outlet header 5 is arranged on the windward side of the fin 11. The water inlet of each heat exchange tube 12 is connected to the water inlet header 4, and the water outlet of each heat exchange tube 12 is connected to the water outlet header 5.

[0027] We know that the airflow in a finned heat exchanger often passes through the gaps between the fins 11, and the arrangement of the heat exchange tubes 12 in a traditional finned heat exchanger is generally bottom-in and top-out or top-in and bottom-out, and the airflow direction is either left-in and right-out or right-in and left-out. The flow direction of the heat exchange medium (water or ethylene glycol aqueous solution, etc.) is perpendicular to the flow direction of the airflow, which is a cross-flow heat exchange. When the air flows through the fins 11, the contact time with the heat exchange tubes 12 is short, and the heat exchange efficiency is low.

[0028] Different from the traditional finned heat exchanger, the finned heat exchanger of the utility model changes the arrangement direction of the heat exchange tubes 12 from top to bottom or from bottom to top, by setting the water inlet manifold 4 on the windward side of the fin 11, setting the water outlet manifold 5 on the windward side of the fin 11, and then connecting the water inlet of the heat exchange tube 12 with the water inlet manifold 4, and connecting the water outlet of the heat exchange tube 12 with the water outlet manifold 5, so as to realize the left-in and right-out or right-in and left-out of the heat exchange medium. Specifically, each group of heat exchange components 1 includes a plurality of heat exchange tubes 12 arranged parallel to each other and spaced apart, the water inlet manifold 4 is provided with a plurality of water through holes in the vertical direction, the water outlet manifold 5 is provided with a plurality of water through holes in the vertical direction, and the number of the water through holes and the water through holes is consistent with the number of the heat exchange tubes 12, the water inlet end of the heat exchange tube 12 is inserted into the water through hole and connected with the water inlet manifold 4, and the water outlet end is inserted into the water outlet and connected with the water outlet manifold 5. Thus, the heat exchange medium flows from the water inlet end to the water outlet end, and from the wind outlet surface to the windward surface. The flow direction of the heat exchange medium and the flow direction of the air form convection, thereby realizing convective heat exchange. Moreover, convective heat exchange can prolong the contact time between the air and the heat exchange tube 12, increase the heat exchange coefficient, and thus improve the heat exchange efficiency.

[0029] Reference Figure 2 In the present fin-type heat exchanger, each heat exchange tube 12 includes a plurality of straight sections 121 and a plurality of curved sections 122. The plurality of straight sections 121 are vertically inserted in the fin 11, and each curved section 122 is arranged at the ends of two adjacent straight sections 121 to connect the two adjacent straight sections 121. As a result, the heat exchange medium gradually flows from the wind outlet surface to the windward surface in an "S" shape, thereby ensuring that the airflow has a larger contact area and a longer contact time with the heat exchange tube 12, further ensuring the heat exchange efficiency. It should be noted that the present technical solution does not limit the number of straight sections 121 and curved sections 122 of the heat exchange tube 12. In actual application, the length of the heat exchange tube 12 can be increased or decreased according to actual needs. The longer the length of the heat exchange tube 12, the greater the contact area between the heat exchange tube 12 and the fin 11, and the higher the heat exchange efficiency.

[0030] At the same time, the more straight sections 121 and curved sections 122 of the heat exchange tube 12, the greater the flow resistance encountered by the heat exchange medium when it flows (the curved section 122 will force the heat exchange medium to change the flow direction and generate eddy currents, which will cause the heat exchange medium to slow down, thereby increasing local resistance; the longer the heat exchange tube 12, the greater the friction encountered by the heat exchange medium when it flows in the heat exchange tube 12), which not only causes the flow rate of the heat exchange medium to slow down, thereby requiring a greater pressure to maintain the flow rate of the heat exchange medium, but also causes a large temperature difference between the water inlet and the water outlet, thereby resulting in a weaker heat exchange efficiency at the water outlet.

[0031] To this end, an embodiment of the finned heat exchanger includes a first heat exchange component 2 and a second heat exchange component 3 disposed in back-to-back directions. Figure 3 As shown, the water inlets of the heat exchange tubes 12 in the first heat exchange assembly 2 and the second heat exchange assembly 3 are connected to the water inlet header 4, and the water outlets of the heat exchange tubes 12 in the first heat exchange assembly 2 and the second heat exchange assembly 3 are connected to the water outlet header 5.

[0032] Specifically, the first heat exchange component 2 and the second heat exchange component 3 are symmetrically arranged, the first heat exchange component 2 includes a first fin and a first heat exchange tube inserted in the first fin, and the first heat exchange tube is arranged at intervals in the up and down direction of the first fin; similarly, the second heat exchange component 3 includes a second fin and a second heat exchange tube inserted in the second fin, and the second heat exchange tube is arranged at intervals in the up and down direction of the second fin. Among them, the first fin and the second fin are arranged in parallel, and the first heat exchange tube and the second heat exchange tube are arranged back to back, that is, symmetrically arranged. The water inlet of the first heat exchange tube and the second heat exchange tube are connected to the water inlet header 4, and the water outlet is connected to the water outlet header 5. In this embodiment, the heat exchange component 1 is arranged into two groups, which can shorten the length of the heat exchange tube 12 in each group of heat exchange components 1 while ensuring the heat exchange area, thereby reducing the flow resistance of the heat exchange medium.

[0033] Furthermore, the water inlet header 4 and the water outlet header 5 are arranged in the middle of the first heat exchange assembly 2 and the second heat exchange assembly 3. The water inlet header 4 and the water outlet header 5 are arranged in the same plane and are located on the central axis of the first heat exchange assembly 2 and the second heat exchange assembly 3. At this time, the lengths of the first heat exchange tube and the second heat exchange tube can be ensured to be equal, so that the heat exchange efficiency of the first heat exchange assembly 2 and the second heat exchange assembly 3 is equivalent, thereby achieving uniform heat exchange of the two groups of heat exchange assemblies 1.

[0034] At the same time, a windshield 6 is provided at one end of the first heat exchange component 2 and / or the second heat exchange component 3 facing the other heat exchange component 1, and the windshield 6 is provided in parallel with the fins 11. The material of the windshield 6 and the material of the fins 11 can be the same or different, and the function is to prevent the air volume from being lost from the header connection and ensure that the airflow shuttles between the fins 11.

[0035] In the present finned heat exchanger, an exhaust valve (not marked) is provided at the upper end of the water inlet manifold 4, and a drain valve (not marked) is provided at the lower end of the water outlet manifold 5. The exhaust valve is provided at a high position of the water inlet manifold 4, and is used to timely discharge the gas in the water inlet manifold 4, especially when the heat exchanger is heating, the flowing heat exchange medium is a heat medium, which will produce a large amount of water vapor. At this time, it is necessary to open the exhaust valve in time to exhaust the gas, so as to avoid pressure blockage in the water inlet manifold 4. The drain valve is provided at a low position of the water outlet manifold 5, and is used to regularly discharge the heat exchange medium or sediment in the pipeline to ensure the cleanliness of the heat exchange tube 12.

[0036] In addition, in one embodiment of the present invention, a filter (not shown) is disposed in the water inlet manifold 4 .

[0037] The water inlet pipe in the traditional fin heat exchanger is relatively small, and the installation of the filter is often difficult and complicated. The technical solution connects all the heat exchange tubes 12 with the water inlet manifold 4, and the diameter of the water inlet manifold 4 is much larger than the diameter of the heat exchange tubes 12, which is convenient for installing a filter in the water inlet manifold 4 to filter the heat exchange medium. The filter and the water inlet manifold 4 are detachably connected, such as the filter can be plugged in the water inlet manifold 4, or the filter can be screwed in the water inlet manifold 4, so that the filter can be easily removed for cleaning.

[0038] The utility model also proposes an air conditioner, which includes a fin heat exchanger. The specific structure of the fin heat exchanger refers to the above-mentioned embodiment. Since the air conditioner adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0039] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A finned heat exchanger, characterized in that: include: A heat exchange component, the heat exchange component comprising fins and a plurality of heat exchange tubes inserted in the fins, wherein the plurality of heat exchange tubes are arranged at intervals in the vertical direction of the fins; A water inlet manifold, the water inlet manifold being arranged on the air outlet surface of the fin; A water outlet header, the water outlet header is arranged on the windward surface of the fin; Wherein, the water inlet of each heat exchange tube is connected to the water inlet header, and the water outlet of each heat exchange tube is connected to the water outlet header.

2. The finned heat exchanger according to claim 1, characterized in that: Each of the heat exchange tubes includes a plurality of straight sections and a plurality of curved sections. The plurality of straight sections are vertically inserted in the fins, and each curved section is arranged at the ends of two adjacent straight sections to connect the two adjacent straight sections.

3. The finned heat exchanger according to claim 1, characterized in that: The fin heat exchanger includes a first heat exchange component and a second heat exchange component arranged back to back, the water inlets of the heat exchange tubes in the first heat exchange component and the second heat exchange component are connected to the water inlet header, and the water outlets of the heat exchange tubes in the first heat exchange component and the second heat exchange component are connected to the water outlet header.

4. The finned heat exchanger according to claim 3, characterized in that: The water inlet header and the water outlet header are arranged between the first heat exchange component and the second heat exchange component.

5. The finned heat exchanger according to claim 3, characterized in that: A wind shield is provided at one end of the first heat exchange component and / or the second heat exchange component facing the other heat exchange component, and the wind shield is arranged parallel to the fins.

6. The finned heat exchanger according to claim 1, characterized in that: An exhaust valve is arranged at the upper end of the water inlet manifold.

7. The finned heat exchanger according to claim 1, characterized in that: A filter is arranged in the water inlet manifold.

8. The finned heat exchanger according to claim 7, characterized in that: The filter is detachably connected to the water inlet manifold.

9. The finned heat exchanger according to claim 1, characterized in that: A drain valve is arranged at the lower end of the water outlet manifold.

10. An air conditioner, characterized in that: It comprises the fin heat exchanger as claimed in any one of claims 1 to 9.

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