Air conditioner

Abstract

The present invention discloses an air conditioner, which comprises: a housing provided with an air inlet and an air outlet; a heat exchanger disposed in the housing and including fins and heat exchange tubes, the fins comprising: a base plate provided with tube holes and slits, the heat exchange tubes passing through the tube holes; slit protrusions disposed on the base plate and straddling the slits, the slit protrusions being inclined relative to the base plate. The air conditioner according to the embodiment of the present invention has advantages such as a large heat exchange area and high heat exchange efficiency.

Description

Technical Field

[0001] The present invention relates to the field of air conditioning equipment, and particularly to an air conditioner. Background Art

[0002] In the air conditioner in the related art, its heat exchanger is mainly composed of a plurality of fins and a plurality of heat exchange tubes expanded on the fins. When the air conditioner works, the refrigerant flows in the copper tubes, and its heat is conducted to the fins through the copper tubes, and then the fins conduct the heat to the flowing air. Since the air velocity is very low, generally between 0.5 m / s and 2 m / s, the thermal resistance of the heat exchanger is mainly the heat conduction between the air and the heat exchange fins. Therefore, strengthening this heat conduction plays a crucial role in improving the efficiency of the heat exchanger.

[0003] For this reason, slits are usually formed on the fins. The slit protrusions formed by the slits are generally arranged parallel to the substrate. When the air flows through the surface of the fins, the slit protrusions only play a role in destroying the thermal boundary layer of the air on the surface of the fin substrate, and have little disturbance to the air, and the air flow direction hardly changes. Therefore, the effect of enhancing heat transfer is limited. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, an object of the present invention is to provide an air conditioner, which has the advantages of large heat exchange area, high heat exchange efficiency, etc.

[0005] To achieve the above object, according to an embodiment of the present invention, an air conditioner is provided, including: a housing, the housing is provided with an air inlet and an air outlet; a heat exchanger, the heat exchanger is disposed in the housing and includes fins and heat exchange tubes, the fins include: a substrate, the substrate is provided with tube holes and slits, the heat exchange tubes are disposed through the tube holes; slit protrusions, the slit protrusions are disposed on the substrate and straddle the slits, and the slit protrusions are inclined with respect to the substrate.

[0006] The air conditioner according to the embodiment of the present invention has the advantages of large heat exchange area, high heat exchange efficiency, etc.

[0007] According to some specific embodiments of the present invention, the slit protrusions include: a spoiler arm, the spoiler arm is spaced from the substrate and is inclined with respect to the substrate; a first support leg and a second support leg, one end of the first support leg is connected to one end of the spoiler arm and the other end is connected to the substrate, and one end of the second support leg is connected to the other end of the spoiler arm and the other end is connected to the substrate.

[0008] According to some specific embodiments of the present invention, the slits and the slit protrusions are respectively multiple, and among them, the maximum distances between the spoiler arms of at least two of the slit protrusions and the substrate are different.

[0009] According to some specific embodiments of the present invention, the tube holes and the heat exchange tubes are respectively multiple, and the multiple tube holes are arranged at intervals along the length direction of the substrate. The slits and the slit protrusions are respectively multiple, and the multiple slit protrusions are arranged in multiple groups on the substrate. Each group of slit protrusions is located between adjacent tube holes and includes multiple slit protrusions arranged at intervals along the width direction of the substrate. The distance between the spoiler arm of each slit protrusion and the substrate gradually changes along the width direction of the substrate.

[0010] According to some specific embodiments of the present invention, one side in the width direction of the substrate faces the air inlet to form a windward side, and the other side in the width direction of the substrate faces the air outlet to form a leeward side; for the slit protrusions located between the center in the width direction of the substrate and the windward side, the distance between the spoiler arm of each slit protrusion and the substrate gradually increases along the direction from the windward side to the center in the width direction of the substrate; for the slit protrusions located between the center in the width direction of the substrate and the leeward side, the distance between the spoiler arm of each slit protrusion and the substrate gradually increases along the direction from the leeward side to the center in the width direction of the substrate.

[0011] According to some specific embodiments of the present invention, for the slit protrusions located between the center in the width direction of the substrate and the windward side, the maximum distance between the spoiler arms of the multiple slit protrusions and the substrate gradually increases along the direction from the windward side to the center in the width direction of the substrate; for the slit protrusions located between the center in the width direction of the substrate and the leeward side, the maximum distance between the spoiler arms of the multiple slit protrusions and the substrate gradually increases along the direction from the leeward side to the center in the width direction of the substrate.

[0012] According to some specific embodiments of the present invention, each slit protrusion extends along the length direction of the substrate, and at least two of the slit protrusions located on the outermost side in the width direction of the substrate in each group of slit protrusions are arranged at intervals along the length direction of the substrate.

[0013] According to some specific embodiments of the present invention, for the corresponding slit protrusion and slit, the first support leg and the second support leg of the slit protrusion are respectively connected to both ends in the length direction of the slit, and the distance between the first support leg and the second support leg gradually decreases along the direction from the substrate to the spoiler arm.

[0014] According to some specific embodiments of the present invention, multiple first support legs and multiple second support legs adjacent to the tube hole are arranged around the tube hole along the circumferential direction of the tube hole.

[0015] According to some specific embodiments of the present invention, the substrate is configured with a first convex portion and a second convex portion, the first convex portion and the second convex portion protrude toward the side where the slit protrudes in the thickness direction of the substrate, and both the first convex portion and the second convex portion extend along the length direction of the substrate and are respectively located on both sides in the width direction of the substrate.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 is a schematic structural view of a fin of an air conditioner according to an embodiment of the present invention;

[0019] Figure 2 is Figure 1 a cross-sectional view taken along line A-A in

[0020] Figure 3 is Figure 2 a schematic diagram of gas flow in

[0021] Reference Signs:

[0022] fin 100,

[0023] substrate 120, tube hole 121, slit 122, first convex portion 123, second convex portion 124,

[0024] slit protrusion 130, turbulence arm 131, first support leg 132, second support leg 133. Detailed Embodiments

[0025] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0027] In the description of the present invention, the "first feature" and "second feature" may include one or more of such features.

[0028] In the description of the present invention, the meaning of "a plurality" is two or more, and the meaning of "several" is one or more.

[0029] The air conditioner according to an embodiment of the present invention will be described below with reference to the drawings.

[0030] As Figures 1 - 3 shown, the air conditioner according to an embodiment of the present invention includes a housing (not shown in the figure) and a heat exchanger.

[0031] The housing is provided with an air inlet and an air outlet. The heat exchanger is disposed in the housing and includes fins 100 and heat exchange tubes 110.

[0032] The fin 100 includes a base plate 120 and a slit protrusion 130. The base plate 120 is provided with tube holes 121 and slits 122, and the heat exchange tube 110 is inserted through the tube holes 121. The slit protrusion 130 is disposed on the base plate 120 and straddles the slit 122, and the slit protrusion 130 is inclined with respect to the base plate 120.

[0033] Wherein, in the heat exchanger, the fins 100 can be arranged in a plurality and are parallel to and spaced from each other, a plurality of tube holes 121 are provided on each fin 100, the heat exchange tubes can be arranged in a plurality, and the plurality of heat exchange tubes are inserted through the plurality of tube holes 121 on the same fin 100, and each heat exchange tube sequentially passes through the tube holes 121 corresponding in position on the plurality of fins 100.

[0034] For example, the gas is introduced from the air inlet, passes through the heat exchanger, exchanges heat with the heat exchanger, and then is discharged from the air outlet. The fins 100 define the flow path of the air in the heat exchanger, and the gas flows between the plurality of fins 100. The base plate 120 constitutes the main structure of the fin 100, the slit protrusion 130 and the tube holes 121 are both formed on the base plate 120, the axial direction of the tube holes 121 can be perpendicular to the base plate 120, and its specific shape can be determined according to the shape of the heat exchange tube, for example, it is a circular hole, and the tube holes 121 can be configured as flanged holes to increase the contact area with the heat exchange tube, thereby improving the stability and the heat conduction area.

[0035] According to the air conditioner of the embodiment of the present invention, by providing the slits 122 and the slit protrusions 130 in the substrate 120, a channel for conveying gas is formed, thereby guiding the gas. Moreover, the slit protrusions 130 are inclined with respect to the substrate 120, and the slit protrusions 130 can play a role in disturbing the flowing gas, changing the original flow direction of the gas. Compared with the slit protrusions arranged in parallel in the related art, the slit protrusions 130 can not only destroy the effect of the air thermal boundary layer on the surface of the substrate 120, but also change the air flow direction, strengthen the air disturbance. At the same time, the inclined slit protrusions 130 increase the contact area with the air, extend the air flow path and heat exchange time, and effectively enhance the heat exchange efficiency.

[0036] Therefore, the air conditioner according to the embodiment of the present invention has the advantages of large heat exchange area and high heat exchange efficiency.

[0037] According to some specific embodiments of the present invention, such as Figure 1 and Figure 2 shown, the slit protrusion 130 includes a turbulence arm 131, a first support leg 132 and a second support leg 133.

[0038] The turbulence arm 131 is spaced from the substrate 120 and is inclined with respect to the substrate 120. One end of the first support leg 132 is connected to one end of the turbulence arm 131 and the other end is connected to the substrate 120. One end of the second support leg 133 is connected to the other end of the turbulence arm 131 and the other end is connected to the substrate 120.

[0039] In this way, the first support leg 132 and the second support leg 133 connect the substrate 120 and the turbulence arm 131, reinforce the turbulence arm 131, ensure the structure and position of the turbulence arm 131, so as to conduct and disturb the gas normally.

[0040] According to some specific embodiments of the present invention, such as Figure 1 shown, the slits 122 and the slit protrusions 130 are respectively multiple. Among them, the maximum distances between the turbulence arms 131 of at least two slit protrusions 130 and the substrate 120 are different. That is to say, the multiple turbulence arms 131 are not arranged at the same height with respect to the substrate 120, and a height difference will be formed between the turbulence arms 131.

[0041] Thus, the heights of the turbulence arms 131 of each slit protrusion 130 are different, so that the disturbances received by the air during the flow between each slit protrusion 130 are different, changing the conveying direction of the gas, further improving the turbulence effect on the air, and thus further improving the heat exchange efficiency.

[0042] According to the specific embodiment of the present invention, such as Figure 1As shown, there are multiple tube holes 121 and multiple heat exchange tubes 110. The multiple heat exchange tubes 110 are respectively inserted into the multiple tube holes 121 in a one-to-one correspondence. The heat exchange tubes can be copper tubes, which have good thermal conductivity. The multiple tube holes 121 are arranged at intervals along the length direction of the substrate 120. The gas flows between the multiple tube holes 121, improving the uniformity of heat exchange in the length direction of the substrate 120.

[0043] There are multiple slit grooves 122 and multiple slit protrusions 130. The multiple slit protrusions 130 are arranged in multiple groups on the substrate 120. Each group of slit protrusions 130 is located between adjacent tube holes 121. That is, the slit protrusions 130 between adjacent tube holes 121 form a group. Each group of slit protrusions 130 includes multiple slit protrusions 130 arranged at intervals along the width direction of the substrate 120. The distance between the flow disturbance arm 131 of each slit protrusion 130 and the substrate 120 gradually changes along the width direction of the substrate 120.

[0044] The gas flowing through the fin 100 sequentially passes through multiple slit protrusions 130 along the width direction of the fin 100. Each flow disturbance arm 131 has a flow disturbance effect on the introduced gas, and the inclination direction of the flow disturbance arm 131 can increase the flow disturbance effect on the air. The gas is disturbed by multiple flow disturbance arms 131, extending the air flow path and heat exchange time, thereby improving the heat exchange effect.

[0045] According to some specific examples of the present invention, as Figure 2 and Figure 3 shown, one side in the width direction of the substrate 120 faces the air inlet to form the windward side, which is represented by B in the figure. The other side in the width direction of the substrate 120 faces the air outlet to form the leeward side, which is represented by C in the figure. Thus, the gas is introduced from the windward side, flows along the width direction of the fin 100, and is discharged from the leeward side after passing through the fin 100.

[0046] For the slit protrusions 130 located between the center in the width direction of the substrate 120 and the windward side, the distance between the flow disturbance arm 131 of each slit protrusion 130 and the substrate 120 gradually increases along the direction from the windward side to the center in the width direction of the substrate 120. That is to say, the inclination angle of each flow disturbance arm 131 on the windward side gradually increases along the air flow direction.

[0047] For the slit protrusions 130 located between the center in the width direction of the substrate 120 and the leeward side, the distance between the flow disturbance arm 131 of each slit protrusion 130 and the substrate 120 gradually increases along the direction from the leeward side to the center in the width direction of the substrate 120. That is to say, the inclination angle of each flow disturbance arm 131 on the windward side gradually decreases along the air flow direction.

[0048] Among them, the central axis of the tube hole 121 can be located at the center in the width direction of the substrate 120.

[0049] The inclination directions of the spoiler arms 131 on both sides in the width direction of the substrate 120 are arranged in such a way that the gas on the windward side is disturbed by the spoiler arms 131 and gradually diffuses during the process of flowing toward the center in the width direction of the substrate 120. While being disturbed, the contact area between the air and the heat exchange tubes can be increased. After that, it flows out from the leeward side after being disturbed by the spoiler arms 131 on the other side, and during this process, the gas gradually converges. Thus, while forming a strong disturbance, it can ensure that the strip-shaped protrusions 130 have a relatively small wind resistance to the air flow, thereby further improving the heat exchange efficiency. In addition, the strip-shaped protrusions 130 form a symmetrical structure in the width direction of the substrate 120, which is beneficial to simplifying the production process.

[0050] According to some specific embodiments of the present invention, such as Figure 2 and Figure 3 As shown, for the strip-shaped protrusions 130 located between the center and the windward side in the width direction of the substrate 120, the maximum distance between the spoiler arms 131 of the multiple strip-shaped protrusions 130 and the substrate 120 gradually increases along the direction from the windward side to the center in the width direction of the substrate 120. That is to say, the height of the multiple spoiler arms 131 on the windward side gradually increases along the air flow direction.

[0051] For the strip-shaped protrusions 130 located between the center and the leeward side in the width direction of the substrate 120, the maximum distance between the spoiler arms 131 of the multiple strip-shaped protrusions 130 and the substrate 120 gradually increases along the direction from the leeward side to the center in the width direction of the substrate 120. That is to say, the height of the multiple spoiler arms 131 on the leeward side gradually decreases along the air flow direction.

[0052] Thus, when the air passes through the fin 100, through the action of the spoiler arms 131, the air flow first diffuses and then converges after passing through the heat exchange tubes, improving the disturbance ability while reducing the wind resistance, thereby improving the heat exchange efficiency. In addition, the strip-shaped protrusions 130 form a symmetrical structure in the width direction of the substrate 120, which is beneficial to simplifying the production process.

[0053] According to some specific embodiments of the present invention, such as Figure 1 and Figure 2 As shown, each strip-shaped protrusion 130 extends along the length direction of the substrate 120, which can play a better guiding and disturbing effect on the gas passing through the fin 100. The interval direction of the first support leg 132 and the second support leg 133 is perpendicular to the air flow direction, reducing the resistance of the gas flow and playing a guiding role, thereby ensuring the smooth flow of the gas.

[0054] Among the slit protrusions 130 in each group, at least two of the slit protrusions 130 located on the outermost side in the width direction of the substrate 120 are arranged at intervals along the length direction of the substrate 120. In this way, the length of the outermost slit protrusion 130 is reduced, thereby ensuring the structural strength of the slit protrusion 130 and avoiding the collapse of the slit protrusion 130.

[0055] According to some specific examples of the present invention, such as Figure 1 As shown, for the corresponding slit protrusion 130 and slit 122, the first support leg 132 and the second support leg 133 of the slit protrusion 130 are respectively connected to both ends in the length direction of the slit 122, and the distance between the first support leg 132 and the second support leg 133 gradually decreases along the direction from the substrate 120 to the spoiler arm 131. The cross-section of the slit protrusion 130 perpendicular to the air flow direction forms a trapezoid with a narrow upper part and a wide lower part, reducing the deformation degree of the first support leg 132 and the second support leg 133 and improving the stability of the slit protrusion 130.

[0056] According to some specific embodiments of the present invention, such as Figure 1 As shown, a plurality of first support legs 132 and a plurality of second support legs 133 adjacent to the tube hole 121 are arranged around the tube hole 121 along the circumferential direction of the tube hole 121. Furthermore, the slit protrusions 130 are arranged in a shape adapted to the contour of the tube hole 121, and the slit protrusions 130 make full use of the space on the substrate 120, achieving a better effect of guiding and diverting the gas of the fin 100.

[0057] According to some specific embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the substrate 120 is configured with a first convex portion 123 and a second convex portion 124. The first convex portion 123 and the second convex portion 124 protrude toward the side of the slit protrusion 130 in the thickness direction of the substrate 120. Both the first convex portion 123 and the second convex portion 124 extend along the length direction of the substrate 120 and are respectively located on both sides in the width direction of the substrate 120.

[0058] Among them, the first convex portion 123 is adjacent to the windward side of the substrate 120, the second convex portion 124 is adjacent to the leeward side of the substrate 120 and is arranged on the substrate 120, and the first convex portion 123 and the second convex portion 124 are respectively located outside a plurality of slit protrusions 130 in the width direction of the substrate 120.

[0059] Thereby, the contact area between the substrate 120 and the air can be increased, thereby further improving the heat exchange efficiency, strengthening the structural strength of the substrate 120, and further improving the stability of the overall structure of the fin 100.

[0060] Other components and operations of the air conditioner according to the embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0061] For example, in the present application, the air conditioner 1 performs a refrigeration cycle by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.

[0062] The compressor compresses the refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0063] The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by using the latent heat of evaporation of the refrigerant to perform heat exchange with the material to be cooled. Throughout the cycle, the air conditioner 1 can adjust the temperature of the indoor space.

[0064] The indoor heat exchanger and the outdoor heat exchanger serve as condensers or evaporators. When the indoor heat exchanger serves as a condenser, the air conditioner serves as a heater in the heating mode, and when the indoor heat exchanger serves as an evaporator, the air conditioner serves as a cooler in the cooling mode.

[0065] In the description of this specification, the description referring to terms such as "specific embodiments", "specific examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0066] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. An air conditioner, characterized in that, it includes: a housing provided with an air inlet and an air outlet; a heat exchanger disposed in the housing and including fins and heat exchange tubes, the fins including: a substrate provided with tube holes and a plurality of slits, the heat exchange tubes passing through the tube holes; a plurality of slit protrusions disposed on the substrate and straddling the slits, the slit protrusions being inclined relative to the substrate; the slit protrusions include: a flow disturbing arm spaced from the substrate and inclined relative to the substrate; a first support leg and a second support leg, one end of the first support leg being connected to one end of the flow disturbing arm and the other end being connected to the substrate, one end of the second support leg being connected to the other end of the flow disturbing arm and the other end being connected to the substrate, and the maximum distances between the flow disturbing arms of at least two of the slit protrusions and the substrate being different.

2. The air conditioner according to claim 1, characterized in that, the tube holes and the heat exchange tubes are respectively multiple, and the multiple tube holes are arranged at intervals along the length direction of the substrate; the slits and the slit protrusions are respectively multiple, and the multiple slit protrusions are arranged in multiple groups on the substrate, each group of slit protrusions being located between adjacent tube holes and including a plurality of slit protrusions arranged at intervals along the width direction of the substrate, and the distance between the flow disturbing arm of each slit protrusion and the substrate gradually changes along the width direction of the substrate.

3. The air conditioner according to claim 2, characterized in that, one side in the width direction of the substrate faces the air inlet to form a windward side, and the other side in the width direction of the substrate faces the air outlet to form a leeward side; for the slit protrusions located between the center in the width direction of the substrate and the windward side, the distance between the flow disturbing arm of each slit protrusion and the substrate gradually increases along the direction from the windward side to the center in the width direction of the substrate; for the slit protrusions located between the center in the width direction of the substrate and the leeward side, the distance between the flow disturbing arm of each slit protrusion and the substrate gradually increases along the direction from the leeward side to the center in the width direction of the substrate.

4. The air conditioner according to claim 3, characterized in that, for the slit protrusions located between the center in the width direction of the substrate and the windward side, the maximum distances between the flow disturbing arms of the multiple slit protrusions and the substrate gradually increase along the direction from the windward side to the center in the width direction of the substrate; for the slit protrusions located between the center in the width direction of the substrate and the leeward side, the maximum distances between the flow disturbing arms of the multiple slit protrusions and the substrate gradually increase along the direction from the leeward side to the center in the width direction of the substrate.

5. The air conditioner according to claim 2, characterized in that, each slit protrusion extends along the length direction of the substrate, and at least two of the slit protrusions located on the outermost side in the width direction of the substrate in each group of slit protrusions are arranged at intervals along the length direction of the substrate.

6. The air conditioner according to claim 5, characterized in that, For the slit protrusion and the slit corresponding in position, the first support leg and the second support leg of the slit protrusion are respectively connected to two ends in the length direction of the slit, and the distance between the first support leg and the second support leg gradually decreases in the direction from the substrate to the spoiler arm.

7. The air conditioner according to claim 5, wherein, A plurality of first support legs and a plurality of second support legs adjacent to the tube hole are arranged around the tube hole along the circumferential direction of the tube hole.

8. The air conditioner according to any one of claims 1-7, wherein, The substrate is configured with a first convex portion and a second convex portion. The first convex portion and the second convex portion protrude toward the side of the slit protrusion in the thickness direction of the substrate. Both the first convex portion and the second convex portion extend along the length direction of the substrate and are respectively located on both sides in the width direction of the substrate.

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