Heat exchanger and air conditioner having the same

Abstract

The present invention provides a heat exchanger and an air conditioner equipped with the same. The heat exchanger comprises: a heat exchange body mounted on the edge of a chassis; and a heat exchange side plate disposed at the end of the heat exchange body. The heat exchange side plate, on a side adjacent to the chassis edge, comprises a heat exchange edge and a run-off edge connected to each other. The heat exchange edge is configured to cooperate with the chassis and protrudes from the run-off edge. The run-off edge comprises an inlet transition section and a run-off section connected to each other, with the inlet transition section being an arc-shaped structure. The technical solution provided by the present invention can solve the prior art problem of condensed water easily flowing out of the chassis.

Description

Technical Field

[0001] The present invention relates to the technical field of window air conditioners, and in particular to a heat exchanger and an air conditioner having the same. Background Art

[0002] Window air conditioners currently hold a significant position in the air conditioning market due to their simple structure and easy installation. Consequently, their reliability is gaining increasing attention. The reliability of window air conditioners is directly impacted by the reliability of the radiator. The heat exchanger, used for refrigerant heat exchange, often produces condensation in existing radiators.

[0003] However, in the prior art, since the folded edge of the indoor heat exchanger side plate and the chassis is fixed to a continuous design, in a high humidity environment, the condensed water droplets generated on the folded edge of the side plate will flow down along the side plate, causing the condensed water droplets to flow out of the air conditioner along the outside of the chassis, thereby affecting the indoor environment. Summary of the Invention

[0004] The main purpose of the present invention is to provide a heat exchanger and an air conditioner having the same, so as to solve the technical problem in the prior art that condensed water droplets easily flow out of the chassis.

[0005] In order to achieve the above object, according to one aspect of the present invention, a heat exchanger is provided. The heat exchanger is installed in a chassis and includes:

[0006] The heat exchange body is installed at the edge of the chassis;

[0007] Heat exchange side plates, which are arranged at the ends of the heat exchange body;

[0008] Among them, one side of the edge of the heat exchange side plate close to the chassis has a heat exchange edge and an avoidance edge that are interconnected. The heat exchange edge is used to cooperate with the chassis. The heat exchange edge protrudes from the avoidance edge. The avoidance edge has an inlet transition section and an avoidance section that are interconnected. The inlet transition section is an arc structure.

[0009] Further, the first end of the inlet transition section is tangent to the heat exchange edge; and / or,

[0010] The second end of the entry transition section is tangent to the avoidance section.

[0011] Furthermore, the arc radius R of the inlet transition section h The inscribed angle α between the first end of the inlet transition section and the heat exchange edge satisfies the following relationship:

[0012]

[0013] Among them, σ lvis the tension coefficient of water, θ is the true contact angle of condensed water, θ r is the apparent contact angle, ρ is the density of water, and g is the acceleration due to gravity.

[0014] Furthermore, the heat exchange side plate is made of metal material, θ=60°, θ r =θ; the arc radius R of the inlet transition section h The inscribed angle α between the first end of the inlet transition section and the heat exchange edge satisfies the following relationship:

[0015]

[0016] Furthermore, the evaporation temperature of the heat exchanger is 10°C, σ lv =74.22×10 -3 N / m 2 ; Arc radius R of the entrance transition section h The inscribed angle α between the first end of the inlet transition section and the heat exchange edge satisfies the following relationship:

[0017]

[0018] Further, 5°≤α≤40°; and / or,

[0019] 5×10 -3 m≤R h ≤28.6×10 -3 m.

[0020] Furthermore, the heat exchange edge includes a first heat exchange edge and a second heat exchange edge, the first heat exchange edge is connected to an end of the inlet transition section away from the avoidance section, the second heat exchange edge is connected to an end of the avoidance section away from the inlet transition section, and the first heat exchange edge is located above the second heat exchange edge; the total height of the heat exchange edge and the avoidance edge is H, and the height of the first heat exchange edge is h1;

[0021] Among them, h1<0.6H.

[0022] Furthermore, the height of the second heat exchange edge is h2;

[0023] Among them, h2<0.1H.

[0024] Furthermore, the avoidance edge is located on the windward side of the heat exchange body; and / or,

[0025] The avoidance section is a vertical section.

[0026] According to another aspect of the present invention, there is provided an air conditioner, comprising:

[0027] The shell and the chassis are arranged in the shell; and the heat exchanger provided above is installed in the chassis.

[0028] By applying the technical solution of the present invention, by arranging a heat exchange edge and an avoidance edge on the heat exchange side plate, and making the avoidance edge have an arc-shaped inlet transition section, it is possible to have a certain diversion effect on water droplets, and introduce the water droplets into the chassis range, which can prevent the water droplets from flowing out of the chassis along the heat exchange side plate, thereby solving the technical problem in the prior art that condensed water easily flows out of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0030] Figure 1 It shows a schematic structural diagram of a heat exchanger provided according to the first embodiment of the present invention;

[0031] Figure 2 It shows a schematic structural diagram of a heat exchange side plate provided according to the first embodiment of the present invention;

[0032] Figure 3 A schematic diagram showing the height relationship of the heat exchange side plates provided according to the first embodiment of the present invention is shown;

[0033] Figure 4 A schematic diagram showing the angle relationship of the heat exchange side plates provided according to the first embodiment of the present invention is shown;

[0034] Figure 5 A schematic diagram showing the force relationship of the heat exchange side plate provided in the first embodiment of the present invention is shown;

[0035] Figure 6 A schematic diagram showing the effects on condensed water provided in accordance with the first embodiment of the present invention is shown.

[0036] The above drawings include the following reference numerals:

[0037] 10. Chassis;

[0038] 20. Heat exchange body;

[0039] 30. Heat exchange side plate; 31. Heat exchange edge; 311. First heat exchange edge; 312. Second heat exchange edge; 32. Avoidance edge; 321. Inlet transition section; 322. Avoidance section;

[0040] 40. Condensation water. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] Please refer to Figures 1 to 6 In a first embodiment of the present invention, a heat exchanger is provided. The heat exchanger is installed within a chassis 10 and includes a heat exchange body 20 and a heat exchange side plate 30. The heat exchange body 20 is installed at the edge of the chassis 10, and the heat exchange side plate 30 is disposed at the end of the heat exchange body 20. The heat exchange side plate 30 has a heat exchange edge 31 and a relief edge 32 connected to each other on one side of the edge of the chassis 10. The heat exchange edge 31 is configured to cooperate with the chassis 10, and the relief edge 32 is recessed relative to the heat exchange edge 31. The relief edge 32 has an inlet transition section 321 and a relief section 322 connected to each other, and the inlet transition section 321 has an arc-shaped structure.

[0043] The heat exchanger provided in this embodiment is configured such that the avoidance edge 32 is recessed relative to the heat exchange edge 31, and the avoidance edge 32 has an inlet transition section 321 and an avoidance section 322. When condensed water 40 is generated on the radiator, the condensed water 40 is guided through the heat exchange edge 31 to the avoidance edge 32, and then guided from the inlet transition section 321 of the avoidance edge 32 to the avoidance section 322. This prevents the condensed water 40 from flowing out of the chassis 10 along the overall vertical edge structure, thereby effectively solving the technical problem in the prior art that the condensed water 40 easily flows out of the chassis.

[0044] It should be noted that “the heat exchange edge 31 is used to be arranged in conjunction with the chassis 10” can mean that the heat exchange edge 31 is arranged in contact with the inner wall of the chassis 10, or the heat exchange edge 31 and the inner wall of the chassis 10 are arranged with a small gap between them.

[0045] In this embodiment, the first end of the inlet transition section 321 may be tangent to the heat exchange edge 31, or the second end of the inlet transition section 321 may be tangent to the avoidance section 322, or both the first and second ends of the inlet transition section 321 may be tangent to the heat exchange edge 31 and the avoidance section 322. This structural arrangement facilitates the drainage of the condensed water 40 into the bottom pan 10 through the inlet transition section 321, thereby ensuring that the condensed water 40 flows downward along the avoidance edge 32 and preventing the condensed water 40 from dripping out of the bottom pan 10.

[0046] In this embodiment, the arc radius R of the inlet transition section 321 is h The inscribed angle α between the first end of the inlet transition section 321 and the heat exchange edge 31 satisfies the following relationship:

[0047]

[0048] Among them, σ lv is the tension coefficient of water, θ is the true contact angle of condensed water 40, θ ris the apparent contact angle, ρ is the density of water, and g is the acceleration due to gravity. This arrangement ensures that the condensed water 40 effectively adheres to the inlet transition section 321, allowing the generated condensed water 40 to slide smoothly along the inlet transition section 321, preventing the condensed water 40 from directly falling outside the bottom plate 10 through the vertical heat exchange edge 31.

[0049] Specifically, the heat exchange side plate 30 is made of metal material, θ=60°, θ r =θ; arc radius R of the inlet transition section 321 h The inscribed angle α between the first end of the inlet transition section 321 and the heat exchange edge 31 satisfies the following relationship:

[0050]

[0051] In this embodiment, the evaporation temperature of the heat exchanger is 10°C, σ lv =74.22×10-3N / m 2 The arc radius Rh of the inlet transition section 321 and the inscribed angle α between the first end of the inlet transition section 321 and the heat exchange edge 31 satisfy the following relationship:

[0052]

[0053] In this embodiment, 5°≤α≤40°, or in other words, 5×10 -3 m≤R h ≤28.6×10 -3 With such a setting, the value of α is limited to this range, which can ensure that the condensed water 40 can be introduced into the chassis 10 along the inlet transition section 321, thereby preventing the condensed water 40 from flowing out of the chassis 10.

[0054] In this embodiment, the heat exchange edge 31 includes a first heat exchange edge 311 and a second heat exchange edge 312. The first heat exchange edge 311 is connected to the end of the inlet transition section 321 away from the avoidance section 322, and the second heat exchange edge 312 is connected to the end of the avoidance section 322 away from the inlet transition section 321. The first heat exchange edge 311 is located above the second heat exchange edge 312. The total height of the heat exchange edge 31 and the avoidance edge 32 is H, and the height of the first heat exchange edge 311 is h1. Here, h1 is less than 0.6H. This arrangement prevents excessive accumulation of condensed water 40 on the heat exchange edge 31, thereby reducing the possibility of condensed water 40 directly dripping from the first heat exchange edge 311 onto the outside of the chassis 10.

[0055] Specifically, the height of the second heat exchange edge 312 is h2, where h2 < 0.1H. This configuration minimizes the accumulation of condensed water 40 at the second heat exchange edge 312, which could cause the condensed water 40 to flow outward along the second heat exchange edge 312 to the base pan 10. This configuration minimizes the condensed water 40 from accumulating at the second heat exchange edge 312 and flowing outward from the base pan 10.

[0056] In this embodiment, the avoidance edge 32 is located on the windward side of the heat exchange body 20. This arrangement can blow the condensed water 40 at the heat exchange edge 31 into the chassis 10 under the action of the incoming wind, thereby further ensuring that the condensed water 40 will not drip out of the chassis 10.

[0057] In addition to the avoidance edge 32 being located on the windward side of the heat exchange body 20, the avoidance section 322 can also be a vertical section. This configuration allows the condensed water 40 to slide down the avoidance section 322 and fall into the bottom pan 10, further ensuring that the condensed water 40 does not drip out of the bottom pan 10.

[0058] In this embodiment, an inscribed and cut-segment design is added to the folded edge of the indoor heat exchanger side plate close to the air inlet side. The condensed water 40 formed by the folded edge of the upper vertical section of the side plate (corresponding to the heat exchange edge 31) slides down along the inscribed arc section (corresponding to the inlet transition section 321) to the cut section (corresponding to the avoidance section 322), and then slides from the cut section to the water receiving tray (i.e., the bottom plate 10), thereby avoiding the condensed water 40 directly flowing down from the heat exchange side plate 30 to the bottom plate 10 and dripping.

[0059] In order to ensure that the condensed water 40 can slide down the arc section after incision and does not directly drip on the incision entrance section and cause splashing, the inlet transition section 321 and the contraction angle (incision angle) need to be calculated and designed.

[0060] Condensate 40 at the inlet arc section of the side plate is primarily subject to downward gravity P and an upward, oblique adhesion force Wa due to liquid tension. Friction is minimal and can be ignored in this analysis. Furthermore, wind forces acting on the heat exchange side plate 30 are perpendicular to the side plate wall and contribute nothing to the calculation system, thus also being negligible. Force analysis shows that when the following conditions are met, water droplets will slide down the arc section of the heat exchange side plate 30 (corresponding to the inlet transition section 321) without falling vertically.

[0061] P·ds≤Wa·dA·cosα;

[0062] Where P is gravity, in N; ds is the sliding distance of the condensed water 40, in m; Wa is the adhesion work per unit area that needs to be overcome, in W; dA is the area of ​​the contact surface detached, in m 2 , α is the contraction angle, unit is °.

[0063] According to the condensed water 40 separation size derived from the shedding model, it can be obtained that:

[0064]

[0065] MN=2R sinβ=2R sinθ.

[0066] like Figure 6 , where R is the condensed water 40 shedding radius, in mm; σ lv is the tension coefficient of water, in N / m 2 ;θ is the true contact angle, unit is °;θ r is the apparent contact angle, in degrees; ρ is the density of water, in kg / m 3 ; g is the acceleration due to gravity, unit is m / s 2 MN is the attachment surface, which is also the linear dimension of tension, and the unit is m. If the condensed water 40 is to be able to flow downward along the arc surface after incision and not drop vertically at point E before incision, then the minimum arc length of the incision must be EF≥MN, that is, the arc segment EF must be greater than or equal to the attachment surface of the water droplet, so as to ensure the smooth attachment of the water droplet and avoid the water droplet from dripping directly. EF is the minimum arc length of the inscribed portion of the inlet transition section 321, in meters; R h is the inscribed arc radius of the inlet transition section 321, in meters.

[0067]

[0068] Specifically, the metal wall can take θ = 60°, θ r =θ, we can calculate:

[0069]

[0070] Since the evaporation temperature of the heat exchanger is about 10℃, the temperature of the heat exchange side plate 30 is also 10℃. At this time, σ lv =74.22×10-3N / m 2 .

[0071]

[0072] Through calculation and experimental observation, when 5°≤α≤40°, the condensed water 40 can flow into the water receiving tray of the bottom plate 10 along the inscribed edge of the heat exchange plate 30. Combined with the actual curvature, it can be obtained that 5×10 -3 m≤R h ≤28.6×10 -3 m.

[0073] If α=15°, R h ≥8.5×10-3 m.

[0074] In addition, if the size of h1 is too large, more condensed water 40 will accumulate on the folded edge of the heat exchange side plate 30 and cannot be discharged from the folded edge in time along the incision and cut section. If the size is too small, it will affect assembly and other problems. Therefore, h1 has an optimal design range; similarly, if the size of h2 is too large, more condensed water 40 generated at the folded edge will slide along the fixed part with the chassis. If the size is too small, it will affect assembly. Therefore, h2 also has an optimal design range.

[0075] In response to the above problems, under the condition of reasonable assembly, the following situations are designed and tested to determine the optimal design range of h1 and h2, as shown in the following table:

[0076]

[0077]

[0078] Based on the above test verification, the optimal design range of h1 should be h1<60%H, and the optimal design range of h2 should be h2<10%H.

[0079] A second embodiment of the present invention provides an air conditioner, comprising a housing, a chassis 10, and the heat exchanger provided in the first embodiment. The chassis 10 is disposed within the housing, and the heat exchanger is mounted within the chassis 10. Specifically, the heat exchanger in the first embodiment is an indoor heat exchanger. By segmenting and incising the heat exchange side plates 30 of the indoor heat exchanger, condensed water formed on the heat exchange side plates 30 is prevented from flowing outward from the connection with the chassis 10. Furthermore, after the incising, the condensed water can flow along the heat exchange side plates 30 into the water receiving pan of the chassis 10, preventing splashing caused by interrupted flow.

[0080] Specifically, the air conditioner in this embodiment is a window-type air conditioner structure, and a split and inscribed design is performed on the side of the heat exchange side plate 30 close to the air inlet.

[0081] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: by arranging a heat exchange edge 31 with a vertical structure and an avoidance edge 32 with an inlet transition section 321 with an arc structure on the heat exchange side plate 30 of the heat exchanger, the condensed water 40 can be drained to the inlet transition section 321 within the range of the chassis 10 after passing through the heat exchange edge 31, and the condensed water 40 can be prevented from flowing out of the chassis along the heat exchange side plate 30, thereby solving the technical problem in the prior art that the condensed water 40 easily flows out of the air conditioner.

[0082] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0083] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0084] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0085] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0086] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0087] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A heat exchanger, characterized in that: The heat exchanger is installed in the chassis (10), and the heat exchanger includes: A heat exchange body (20) is mounted on the edge of the chassis (10); a heat exchange side plate (30), the heat exchange side plate (30) being arranged at an end of the heat exchange body (20); The heat exchange edge plate (30) has a heat exchange edge (31) and an avoidance edge (32) connected to each other on one side of the edge of the base plate (10); the heat exchange edge (31) is used to be arranged in conjunction with the base plate (10); the heat exchange edge (31) is arranged to protrude from the avoidance edge (32); the avoidance edge (32) has an inlet transition section (321) and an avoidance section (322) connected to each other; the inlet transition section (321) is an arc-shaped structure; The arc radius R of the inlet transition section (321) h The following relationship is satisfied between the inscribed angle α between the first end of the inlet transition section (321) and the heat exchange edge (31): ； in, is the tension coefficient of water, is the true contact angle of condensed water, is the apparent contact angle, is the density of water, is the acceleration due to gravity.

2. The heat exchanger according to claim 1, characterized in that The first end of the inlet transition section (321) is tangent to the heat exchange edge (31); and / or, The second end of the inlet transition section (321) is tangent to the avoidance section (322).

3. The heat exchanger according to claim 1, characterized in that The heat exchange side plate (30) is made of metal material. , The arc radius R of the inlet transition section (321) h The following relationship is satisfied between the inscribed angle α between the first end of the inlet transition section (321) and the heat exchange edge (31): 。 4. The heat exchanger according to claim 3, characterized in that The evaporation temperature of the heat exchanger is 10°C. =74.22×10 -3 N / ㎡; the arc radius R of the inlet transition section (321) h The following relationship is satisfied between the inscribed angle α between the first end of the inlet transition section (321) and the heat exchange edge (31): 。 5. The heat exchanger according to any one of claims 1 to 4, characterized in that 5°≤α≤40°; and / or, 。 6. The heat exchanger according to any one of claims 1 to 4, characterized in that The heat exchange edge (31) comprises a first heat exchange edge (311) and a second heat exchange edge (312), the first heat exchange edge (311) being connected to an end of the inlet transition section (321) away from the avoidance section (322), the second heat exchange edge (312) being connected to an end of the avoidance section (322) away from the inlet transition section (321), the first heat exchange edge (311) being located above the second heat exchange edge (312); the total height of the heat exchange edge (31) and the avoidance edge (32) being H, and the height of the first heat exchange edge (311) being h1; Among them, h1<0.6H.

7. The heat exchanger according to claim 6, characterized in that The height of the second heat exchange edge (312) is h2; Among them, h2<0.1H.

8. The heat exchanger according to claim 1, characterized in that The avoidance edge (32) is located on the windward side of the heat exchange body (20); and / or, The avoidance section (322) is a vertical section.

9. An air conditioner, characterized in that: include: A housing and a chassis (10), wherein the chassis (10) is disposed within the housing; The heat exchanger according to any one of claims 1 to 8 is installed in the chassis (10).

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