CN111397195A - Air conditioner - Google Patents

Abstract

The invention discloses an air conditioner, which comprises: the air conditioner comprises a shell, a fan and a controller, wherein the shell is provided with an air inlet and an air outlet; the heat exchanger, the heat exchanger is located just include fin and heat exchange tube in the casing, the fin includes: the heat exchange tube comprises a substrate, a heat exchange tube and a heat exchange tube, wherein the substrate is provided with a tube hole and a strip seam; the slit protrusion is arranged on the substrate and strides over the slit, and the slit protrusion is obliquely arranged relative to the substrate. The air conditioner provided by the embodiment of the invention has the advantages of large heat exchange area, high heat exchange efficiency and the like.

Description

Air conditioner

technical field

The present invention relates to the field of air-conditioning equipment, in particular to an air conditioner.

Background technique

In the air conditioner in the related art, the heat exchanger is mainly composed of a plurality of fins and a plurality of heat exchange tubes expanded and connected to the fins. When the air conditioner is working, the refrigerant flows in the copper tubes, and the heat is transferred to the fins through the copper tubes. The fins conduct heat to the flowing air. Since the flow rate of the air is very low, generally between 0.5m/s and 2m/s, the thermal resistance of the heat exchanger is mainly the heat conduction between the air and the heat exchange fins. Therefore, strengthening the heat conduction plays a crucial role in improving the efficiency of the heat exchanger.

For this reason, slits are usually set on the fins, and 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 serve to destroy the air on the fin base. The effect of the thermal boundary layer on the surface of the sheet has little disturbance to the air, and the air flow direction hardly changes. Therefore, the effect of strengthening heat transfer is limited.

SUMMARY OF THE INVENTION

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide an air conditioner, which has the advantages of large heat exchange area and high heat exchange efficiency.

In order to achieve the above purpose, an air conditioner is proposed according to an embodiment of the present invention, comprising: a casing, the casing is provided with an air inlet and an air outlet; and a heat exchanger, the heat exchanger is arranged in the casing And includes fins and heat exchange tubes, the fins include: a base plate, the base plate is provided with tube holes and slits, the heat exchange pipes are penetrated through the pipe holes; The slit protrusion is arranged on the base sheet and straddles the slit, and the slit protrusion is arranged obliquely with respect to the base sheet.

The air conditioner according to the embodiment of the present invention has the advantages of large heat exchange area and high heat exchange efficiency.

According to some specific embodiments of the present invention, the slit protrusion includes: a spoiler arm, the spoiler arm is spaced apart from the substrate and arranged obliquely with respect to the substrate; a first support leg and a second support Legs, 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, one end of the second support leg is connected to the other end of the spoiler arm and the other end connected to the substrate.

According to some specific embodiments of the present invention, there are a plurality of the slits and the slit protrusions, wherein the maximum distance between the spoiler arms of at least two of the slit protrusions and the substrate is different.

According to some specific embodiments of the present invention, there are a plurality of the tube holes and the heat exchange tubes, respectively, and the plurality of the 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, and each group of slit protrusions is located between adjacent tube holes and includes a A plurality of slit protrusions are arranged at intervals in the width direction of the substrate, and the distance between the spoiler arm of each slit protrusion and the substrate gradually changes along the width direction of the substrate.

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 widthwise center of the substrate and the windward side, the distance between the spoiler arm of each slit protrusion and the substrate is along the direction from the windward side. The direction from the side to the center of the width direction of the substrate gradually increases; for the slit protrusions located between the width direction center of the substrate and the leeward side, the width of each slit protrusion is The distance between the spoiler arm and the substrate gradually increases in a direction from the leeward side to the center in the width direction of the substrate.

According to some specific embodiments of the present invention, for the slit protrusion located between the center of the width direction of the substrate and the windward side, a plurality of spoiler arms of the slit protrusion and the substrate The maximum distance between them gradually increases in the direction from the windward side to the center of the width direction of the substrate; for the slit protrusion located between the center of the width direction of the substrate and the leeward side , the maximum distance between the plurality of turbulent arms raised by the slits and the substrate gradually increases in the direction from the leeward side to the center in the width direction of the substrate.

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

According to some specific embodiments of the present invention, for the slot projection and the slot corresponding to the position, the first support leg and the second support leg of the slot projection are respectively connected to both ends in the longitudinal direction of the slot, 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.

According to some specific embodiments of the present invention, a plurality of first support legs and a plurality of second support legs adjacent to the tube hole are disposed around the tube hole along the circumference of the tube hole.

According to some specific embodiments of the present invention, the substrate is configured with a first convex portion and a second convex portion, and the first convex portion and the second convex portion are directed toward the substrate in a thickness direction of the substrate. One side of the slit protrusion is convex, and the first convex portion and the second convex portion both extend along the length direction of the base sheet and are respectively located on both sides of the base sheet in the width direction.

Additional aspects and advantages of the present invention will be set forth, in part, from the following description, and in part will be apparent from the following description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

1 is a schematic structural diagram of a fin of an air conditioner according to an embodiment of the present invention;

Fig. 2 is a sectional view along line A-A in Fig. 1;

FIG. 3 is a schematic diagram of the gas flow in FIG. 2 .

Reference number:

Fins 100,

The substrate 120, the tube hole 121, the slit 122, the first convex part 123, the second convex part 124,

The slit protrusion 130 , the spoiler arm 131 , the first support leg 132 , and the second support leg 133 .

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "vertical", The orientation or positional relationship indicated by "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 description The present invention and simplified description do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

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

In the description of the present invention, "plurality" means two or more, and "several" means one or more.

An air conditioner according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1-3 , an air conditioner according to an embodiment of the present invention includes a casing (not shown in the drawings) and a heat exchanger.

The housing is provided with an air inlet and an air outlet. The heat exchanger is arranged in the casing and includes fins 100 and heat exchange tubes 110 .

The fin 100 includes a substrate 120 and a slot protrusion 130 . The substrate 120 is provided with tube holes 121 and slits 122 , and the heat exchange tubes 110 pass through the tube holes 121 . The slit protrusions 130 are arranged on the base sheet 120 and are arranged across the slits 122 , and the slit protrusions 130 are arranged obliquely with respect to the base sheet 120 .

Wherein, in the heat exchanger, the fins 100 can be arranged in multiples and are arranged parallel to each other and spaced apart from each other, each fin 100 is arranged with a plurality of tube holes 121, and the heat exchange tubes can be arranged in multiples, and a plurality of heat exchange tubes can be arranged. A plurality of tube holes 121 are passed through the same fin 100 , and each heat exchange tube is passed through a plurality of tube holes 121 corresponding to positions on the fins 100 in sequence.

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

According to the air conditioner of the embodiment of the present invention, by arranging the slits 122 and the slit protrusions 130 in the base sheet 120, a channel for conveying gas is formed, so as to guide the gas, and the slit protrusions 130 are relatively opposite to the base sheet 120. The sheet 120 is arranged obliquely, and the slit protrusions 130 can play a role in disturbing the flowing gas and change 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 It destroys the effect of the air on the thermal boundary layer on the surface of the substrate 120, changes the air flow direction, and strengthens the air disturbance. At the same time, the inclined slit protrusions 130 increase the contact area with the air, extending the air flow path and changing the air. Heat time, effectively enhance the heat exchange efficiency.

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.

According to some specific embodiments of the present invention, as shown in FIGS. 1 and 2 , the slit protrusion 130 includes a spoiler arm 131 , a first support leg 132 and a second support leg 133 .

The spoiler arm 131 is spaced apart from the substrate 120 and disposed obliquely with respect to the substrate 120 . One end of the first support leg 132 is connected to one end of the spoiler arm 131 and the other end is connected to the substrate 120 .

In this way, the first support leg 132 and the second support leg 133 connect the substrate 120 to the spoiler arm 131, reinforce the spoiler arm 131, ensure the structure and position of the spoiler arm 131, and thus conduct normal gas conduction. pass and spoiler.

According to some specific embodiments of the present invention, as shown in FIG. 1 , there are multiple slits 122 and multiple slit protrusions 130 , wherein, between the spoiler arms 131 of at least two slit protrusions 130 and the substrate 120 The maximum distance is different, that is, the plurality of spoiler arms 131 are not arranged at the same height relative to the substrate 120, and a height difference will be formed between the spoiler arms 131.

As a result, the heights of the spoiler arms 131 of the respective slit protrusions 130 are different, so that the disturbances received by the air during the circulation process between the slit protrusions 130 are different, and the conveying direction of the gas is changed, which further improves the performance of the air. The turbulence effect on the air further improves the heat exchange efficiency.

According to a specific embodiment of the present invention, as shown in FIG. 1 , there are a plurality of tube holes 121 and heat exchange tubes 110 respectively. Can be copper tube with good thermal conductivity. The plurality of tube holes 121 are arranged at intervals along the length direction of the substrate 120 . The gas flows between the plurality of tube holes 121 to improve the uniformity of heat exchange in the length direction of the substrate 120 .

There are multiple slits 122 and multiple slit protrusions 130 respectively. The multiple slit protrusions 130 are arranged in multiple groups on the substrate 120, and each group of slit protrusions 130 is located between adjacent tube holes 121, that is, adjacent to each other. The slit protrusions 130 between the tube holes 121 form a group, each group of slit protrusions 130 includes a plurality of slit protrusions 130 spaced along the width direction of the substrate 120, and the interference of each slit protrusion 130 is The distance between the flow arm 131 and the substrate 120 is gradual along the width direction of the substrate 120 .

The gas flowing through the fins 100 sequentially passes through the plurality of slit protrusions 130 along the width direction of the fins 100 . The turbulence effect on the air can be increased, and the turbulence of the gas through the plurality of turbulence arms 131 prolongs the air flow passage and the heat exchange time, thereby improving the heat exchange effect.

According to some specific examples of the present invention, as shown in FIGS. 2 and 3 , one side in the width direction of the substrate 120 faces the air inlet to form the windward side, and the other side in the width direction of the substrate 120 is the windward side. One side faces the air outlet to form the leeward side, and the windward side is indicated by C in the figure. Thereby, the gas is introduced from the windward side, flows in the width direction of the fins 100 , passes through the fins 100 , and is led out from the leeward side.

For the slit protrusions 130 located between the center of the width direction of the substrate 120 and the windward side, the distance between the spoiler arm 131 of each slit protrusion 130 and the substrate 120 is along the direction from the windward side to the substrate 120 The direction of the center of the width direction gradually increases, that is, the inclination angle of each spoiler arm 131 on the windward side gradually increases along the air flow direction.

For the slit protrusions 130 located between the center of the width direction of the substrate 120 and the leeward side, the distance between the spoiler arm 131 of each slit protrusion 130 and the substrate 120 is along the direction from the leeward side to the substrate 120 The direction of the center of the width direction gradually increases, that is, the inclination angle of each spoiler arm 131 on the windward side gradually decreases along the air flow direction.

Wherein, the central axis of the tube hole 121 may be located at the center in the width direction of the substrate 120 .

The inclination directions of the spoiler arms 131 on both sides of the substrate 120 in the width direction are arranged in this way, and the gas on the windward side passes through the spoiler arms 131 and gradually spreads during the flow to the center of the substrate 120 in the width direction, and the disturbed flow is gradually diffused. At the same time, the contact area between the air and the heat exchange tube can be increased, and then flows out from the leeward side after passing through the turbulence of the turbulence arm 131 on the other side, and during this process, the gas gradually gathers again. Therefore, while forming a strong turbulence, it can also ensure that the slit protrusions 130 have a small wind resistance to the airflow, thereby further improving the heat exchange efficiency. In addition, the slit protrusions 130 form a symmetrical structure in the width direction of the substrate 120, which is beneficial to simplify the production process.

According to some specific embodiments of the present invention, as shown in FIG. 2 and FIG. 3 , for the slit protrusion 130 located between the center of the width direction of the substrate 120 and the windward side, the turbulence of the plurality of slit protrusions 130 The maximum distance between the arms 131 and the substrate 120 gradually increases in the direction from the windward side to the center of the width direction of the substrate 120, that is, the heights of the plurality of spoiler arms 131 on the windward side gradually increase in the air flow direction. increase.

For the slit protrusion 130 located between the center of the width direction of the substrate 120 and the leeward side, the maximum distance between the spoiler arms 131 of the plurality of slit protrusions 130 and the substrate 120 is along the direction from the leeward side to the substrate The direction of the center of the width direction of the 120 gradually increases, that is, the heights of the plurality of spoiler arms 131 on the leeward side gradually decrease in the air flow direction.

As a result, when the air passes through the fins 100, the air flow first diffuses through the heat exchange tubes and then converges through the action of the spoiler arms 131, which improves the spoiler capability and reduces the wind resistance, thereby improving the heat exchange efficiency. In addition, the slit protrusions 130 form a symmetrical structure in the width direction of the substrate 120, which is beneficial to simplify the production process.

According to some specific embodiments of the present invention, as shown in FIG. 1 and FIG. 2 , each slit protrusion 130 extends along the length direction of the substrate 120 to better guide and disturb the gas passing through the fins 100 The flow effect, the spacing direction of the first support leg 132 and the second support leg 133 is perpendicular to the airflow direction, which reduces the resistance of the gas flow and acts as a guide, thereby ensuring the smooth flow of the gas.

In each group of the slit protrusions 130 , the outermost slit protrusions 130 in the width direction of the substrate 120 are provided as at least two spaced apart 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 preventing the slit protrusion 130 from collapsing.

According to some specific examples of the present invention, as shown in FIG. 1 , for the slot protrusion 130 and the slot 122 corresponding to the position, the first support leg 132 and the second support leg 133 of the slot protrusion 130 are respectively connected to the Both ends of the slit 122 in the length direction, 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 airflow direction forms a trapezoid with a narrow upper and a lower width, which reduces the degree of deformation of the first support leg 132 and the second support leg 133 and improves the stability of the slit protrusion 130 .

According to some specific embodiments of the present invention, as shown in FIG. 1 , a plurality of first support legs 132 and a plurality of second support legs 133 adjacent to the tube hole 121 are disposed around the tube hole 121 along the circumference of the tube hole 121 . Furthermore, the slit protrusions 130 are arranged according to the shape of the outline of the tube holes 121 , and the slit protrusions 130 make full use of the space on the substrate 120 , and have better guiding and drainage effects on the gas of the fins 100 .

According to some specific embodiments of the present invention, as shown in FIG. 1 and FIG. 2 , the substrate 120 is configured with a first convex portion 123 and a second convex portion 124 , and the first convex portion 123 and the second convex portion 124 are formed on the substrate 120 The first convex portion 123 and the second convex portion 124 both extend along the length direction of the substrate 120 and are located on both sides of the width direction of the substrate 120 respectively.

The first convex portion 123 is adjacent to the windward side of the substrate 120 , the second convex portion 124 is disposed adjacent to the leeward side of the substrate 120 on the substrate 120 , and the first convex portion 123 and the second convex portion 124 are located on the substrate 120 . are respectively located outside the plurality of slit protrusions 130 in the width direction.

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

Other structures and operations of the air conditioner according to the embodiment of the present invention are known to those of ordinary skill in the art, and will not be described in detail here.

For example, the air conditioner 1 in the present application 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 air that has been conditioned and heat-exchanged.

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.

The expansion valve expands the high-temperature and high-pressure liquid-phase refrigerant 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 the cooling effect by using the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. Throughout the cycle, the air conditioner 1 can adjust the temperature of the indoor space.

Indoor heat exchangers and outdoor heat exchangers are used as condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.

In the description of this specification, description with reference to the terms "specific embodiment," "specific example," etc. means that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example.

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

Claims (10)

1. An air conditioner, comprising:

the air conditioner comprises a shell, a fan and a controller, wherein the shell is provided with an air inlet and an air outlet;

the heat exchanger, the heat exchanger is located just include fin and heat exchange tube in the casing, the fin includes:

the heat exchange tube comprises a substrate, a heat exchange tube and a heat exchange tube, wherein the substrate is provided with a tube hole and a strip seam;

the slit protrusion is arranged on the substrate and strides over the slit, and the slit protrusion is obliquely arranged relative to the substrate.

2. The air conditioner of claim 1, wherein the slatted projection comprises:

the turbulent flow arm is spaced from the substrate and is obliquely arranged relative to the substrate;

first supporting leg and second supporting leg, the one end of first supporting leg connect in the one end and the other end of vortex arm connect in the substrate, the one end of second supporting leg connect in the other end and the other end of vortex arm connect in the substrate.

3. The air conditioner as claimed in claim 2, wherein the slit and the slit protrusion are respectively plural, and wherein a maximum distance between the spoiler arm and the base plate is different for at least two slit protrusions.

4. The air conditioner according to claim 2, wherein the tube hole and the heat exchange tube are plural, respectively, and the plural tube holes are arranged at intervals along a length direction of the substrate.

The strip seam with the strip seam arch be a plurality of respectively, and a plurality of the strip seam arch is arranged into the multiunit on the substrate, and every group strip seam arch is located between the adjacent pipe hole and includes along a plurality of strip seam archs that the width direction interval of substrate set up, every the protruding vortex arm of strip seam with the distance between the substrate is along the width direction gradual change of substrate.

5. The air conditioner according to claim 4, wherein 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 positioned between the center of the substrate in the width direction 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 of the substrate in the width direction;

for the slit protrusions located between the center of the substrate in the width direction and the leeward side, the distance between the spoiler arm of each slit protrusion and the substrate gradually increases in the direction from the leeward side to the center of the substrate in the width direction.

6. The air conditioner according to claim 5, wherein, for the louver projection located between the widthwise center of the base sheet and the windward side, the maximum distance between the spoiler arms of the plurality of louver projections and the base sheet is gradually increased in a direction from the windward side to the widthwise center of the base sheet;

for the slit protrusions located between the center of the substrate in the width direction and the leeward side, the maximum distance between the spoiler arms of the slit protrusions and the substrate gradually increases in the direction from the leeward side to the center of the substrate in the width direction.

7. The air conditioner according to claim 4, wherein each of the slit protrusions extends in a longitudinal direction of the base sheet, and at least two slit protrusions located outermost in the width direction of the base sheet in each of the slit protrusions are provided so as to be spaced apart in the longitudinal direction of the base sheet.

8. The air conditioner as claimed in claim 7, wherein for the slit protrusion and the slit, the first support leg and the second support leg of the slit protrusion are connected to both ends of the slit in a length direction thereof, respectively, and a distance between the first support leg and the second support leg is gradually decreased in a direction from the base plate to the spoiler arm.

9. The air conditioner according to claim 7, wherein a plurality of first support legs and a plurality of second support legs adjacent to the duct hole are provided around the duct hole in a circumferential direction of the duct hole.

10. The air conditioner according to any one of claims 1 to 9, wherein the base sheet is configured with a first projection and a second projection, the first projection and the second projection projecting to one side of the slit projection in a thickness direction of the base sheet, the first projection and the second projection each extending in a length direction of the base sheet and being respectively located on both sides in a width direction of the base sheet.

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