Air conditioner outdoor unit and air conditioner

Abstract

The invention relates to the technical field of air conditioners, and discloses an air conditioner outdoor unit which comprises a machine shell, a heat exchanger and a heat exchanger. The fan is arranged in the machine shell, and airflow outside the machine shell is led into the machine shell from the heat exchange air inlet through operation of the fan and is output outwards from the heat exchange air outlet; the heat exchanger is arranged in the machine shell and located below the fan, and the heat exchanger is used for exchanging heat with the airflow; the heat exchanger comprises a first heat exchange part and a second heat exchange part which are arranged up and down, and the distance from the first heat exchange part to the fan is larger than that from the second heat exchange part to the fan; the first heat exchange part and the second heat exchange part respectively comprise one or more rows of heat exchange tube sets, and the row number of the heat exchange tube sets of the first heat exchange part is larger than or equal to the row number of the heat exchange tube sets of the second heat exchange part. Therefore, the problems of heat exchanger cost waste and low heat exchange efficiency of the bottom area of the heat exchanger can be solved simultaneously. The invention further discloses the air conditioner.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, for example, to an air conditioning outdoor unit and an air conditioner. Background Art

[0002] In top-out air conditioner outdoor units, one, two, or three rows of heat exchangers are typically used to meet system configuration and capacity requirements. In most cases, even with products that meet capacity requirements, the heat exchanger's footprint is too large. While two and a half rows of heat exchangers could have satisfied capacity requirements, the lack of a corresponding half-row heat exchange design and fixtures means three rows are the only options. This results in a large heat exchanger configuration and high costs, leading to cost waste. Furthermore, because the fan is located at the very top of the top-out air conditioner outdoor unit, the heat exchanger closer to the fan has high wind speed and high heat exchange efficiency. However, the heat exchanger farther from the fan has more rows and greater resistance, resulting in low wind speed through the bottom heat exchanger and low overall heat exchange efficiency.

[0003] During the implementation of the embodiments of the present disclosure, it was found that at least the following problems exist in the related art:

[0004] The existing top-outlet air-conditioning outdoor unit has the problem of wasteful heat exchanger costs and low heat exchange efficiency in the bottom area of ​​the heat exchanger.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Summary of the Invention

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not intended to be an extensive review, nor to identify key / critical elements or to delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] The embodiments of the present disclosure provide an air-conditioning outdoor unit and an air conditioner, so as to simultaneously solve the problems of wasteful heat exchanger costs and low heat exchange efficiency in the bottom area of ​​the heat exchanger.

[0008] In some embodiments, the air conditioner outdoor unit includes:

[0009] The casing is provided with a heat exchange air inlet and a heat exchange air outlet;

[0010] The fan is installed in the housing, and the operation of the fan draws the airflow outside the housing into the housing through the heat exchange air inlet and outputs it out through the heat exchange air outlet;

[0011] A heat exchanger is provided in the housing and below the fan, and is used to exchange heat with the airflow;

[0012] The heat exchanger includes a first heat exchange portion and a second heat exchange portion arranged vertically, wherein the distance from the first heat exchange portion to the fan is greater than the distance from the second heat exchange portion to the fan;

[0013] The first heat exchange part and the second heat exchange part respectively include one or more rows of heat exchange tube groups, and the number of rows of heat exchange tube groups in the first heat exchange part is greater than or equal to the number of rows of heat exchange tube groups in the second heat exchange part.

[0014] This embodiment configures the heat exchanger to consist of a first heat exchange section and a second heat exchange section arranged vertically. The number of rows of heat exchange pipes in the first heat exchange section is set to be greater than or equal to the number of rows of heat exchange pipes in the second heat exchange section. This allows the number of rows of heat exchange tube groups in the first and second heat exchange sections to be set separately based on actual heat exchange requirements and wind field conditions. The first heat exchange section has more rows of heat exchange tube groups and a larger flow rate, which can improve the heat exchange efficiency of the first heat exchange section at high wind speeds. The second heat exchange section has fewer rows of heat exchange pipes and generates less wind resistance, so that at low wind speeds, the low wind resistance of the second heat exchange section can ensure higher heat exchange efficiency. This not only avoids wasting heat exchange costs by using a heat exchanger with an area exceeding the required capacity, but also matches the wind field, improving the overall heat exchange efficiency of the heat exchanger.

[0015] In some embodiments, the first heat exchange portion comprises:

[0016] The first heat exchange unit includes one or more rows of heat exchange tube groups;

[0017] The second heat exchange unit includes one or more rows of heat exchange tube groups and is arranged side by side with the first heat exchange unit;

[0018] The fixing device is provided between the first heat exchange unit and the second heat exchange unit, and is used for connecting and fixing the first heat exchange unit and the second heat exchange unit.

[0019] In this embodiment, the first heat exchange part is split into a first heat exchange unit and a second heat exchange unit. The first heat exchange unit and the second heat exchange unit each include one or more rows of heat exchange tube groups. In this way, the number of rows of the heat exchanger is further refined, and the cost of the heat exchanger is reduced while meeting the heat exchange requirements. In addition, the wind field is matched, the wind resistance is reduced, and the heat exchange efficiency is improved.

[0020] In some embodiments, the securing device comprises:

[0021] The support plate is configured with a first ventilation portion, and a first edge of the support plate is bent and extended to form a first fixed edge;

[0022] The card frame is configured with a second ventilation portion, and the first edge of the card frame is bent and extended to form a second fixed edge;

[0023] The supporting plate is detachably connected to the bracket, and the first fixed edge and the second fixed edge are arranged opposite to each other.

[0024] The fixing device in this embodiment realizes ventilation through the first ventilation part of the support plate and the second ventilation part of the bracket, which can reduce the wind resistance of the airflow passing through the first heat exchange part and improve the heat exchange efficiency.

[0025] In some embodiments, the support plate and the card frame are partially overlapped, and the length of the overlapping area is adjustable, so that the total length of the support plate and the card frame after being connected is adjustable.

[0026] In this embodiment, the support plate and the bracket partially overlap. This improves the structural strength of the connection area between the support plate and the bracket, thereby enhancing the overall structural strength of the fixture. The length of the overlapping area between the support plate and the bracket is adjustable. By adjusting the relative fixed position of the support plate and the bracket, the total length of the connected support plate and the bracket, and therefore the total length of the fixture, can be adjusted. This allows for the assembly of heat exchange tube banks of varying heights, expanding the applicability of the fixture.

[0027] In some embodiments, the first fixed side is connected to the bottom of the first heat exchange portion, and the second fixed side is connected to the top of the first heat exchange portion;

[0028] The edge of the second fixed side is bent to form an inserting portion, and the inserting portion is inserted into the first heat exchange unit and / or the second heat exchange unit for fixation.

[0029] In this embodiment, the fixing device is assembled with the first heat exchange part, the second fixing edge is overlapped on the top of the first heat exchange unit and the second heat exchange unit, and the insertion part is inserted downward from the top of the first heat exchange unit and / or the second heat exchange unit to achieve relative fixation of the second fixing edge and the first heat exchange unit and / or the second heat exchange unit.

[0030] In some embodiments, the support plate is configured with a first folded edge at an edge in the longitudinal direction, and the first folded edge is provided with a plurality of first mounting holes at equal intervals;

[0031] The edge of the bracket in the longitudinal direction is constructed with a second folded edge, and the second folded edge is provided with a plurality of second mounting holes at equal intervals;

[0032] The first folded edge and the second folded edge are arranged correspondingly, and the fastener is fixed through the second mounting hole and the first mounting hole to connect the support plate and the bracket.

[0033] In this embodiment, the support plate and the bracket are inserted relative to each other. When the required length of the fixing device is determined, the relative positions of the support plate and the bracket are fixed, and the fasteners pass through the corresponding first mounting holes and second mounting holes to achieve the connection and fixation of the support plate and the bracket.

[0034] In some embodiments, the second edge structure of the bracket is provided with a limiting portion, and the support plate is provided with a plurality of limiting grooves in the length direction, and the limiting grooves are adapted to the limiting portion so that the limiting portion and the limiting grooves are engaged with each other to fix the support plate and the bracket.

[0035] In this embodiment, the support plate is inserted into the bracket, and the limiting portion engages and secures with the limiting groove at the appropriate position to achieve relative fixation between the support plate and the bracket. At the same time, the first and second mounting holes provided by the fasteners cooperate to fix the support plate and the bracket, so that the support plate and the bracket form a reliable fixed constraint relationship, thereby ensuring the stability and reliability of the fixing device.

[0036] In some embodiments, a water leakage hole is configured at the bottom of the first fixing side.

[0037] In this embodiment, the drain hole can promptly drain condensed water that drips onto the first fixed side of the first heat exchange portion. At the same time, in winter, the water can be quickly drained and ice can be melted, effectively preventing ice from forming due to poor drainage, which would affect the heat exchange efficiency of the heat exchanger.

[0038] In some embodiments, the width of each row of heat exchange tube groups in the first heat exchange portion is equal to the width of each row of heat exchange tube groups in the second heat exchange portion.

[0039] In this embodiment, the width of each row of heat exchange tube groups in the first heat exchange section is designed to be equal to the width of each row of heat exchange tube groups in the second heat exchange section. This not only contributes to the overall aesthetics of the heat exchanger, but also helps to ensure the overall connection stability when the tube sheet is simultaneously connected to the first heat exchange section and the second heat exchange section.

[0040] In some embodiments, the air conditioner includes: the air conditioner outdoor unit provided in the aforementioned embodiments.

[0041] The air conditioner outdoor unit and air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0042] The heat exchanger is configured as a first heat exchange section and a second heat exchange section arranged vertically. The number of rows of heat exchange tubes in the first heat exchange section is set to be greater than or equal to the number of rows of heat exchange tubes in the second heat exchange section. This allows the number of rows of heat exchange tubes in the first and second heat exchange sections to be set separately based on actual heat exchange requirements and wind farm conditions. The first heat exchange section has more rows of heat exchange tubes, resulting in a larger flow rate, which can improve the heat exchange efficiency of the first heat exchange section at high wind speeds. The second heat exchange section has fewer rows of heat exchange tubes, resulting in less wind resistance. Therefore, the low wind resistance of the second heat exchange section ensures higher heat exchange efficiency at low wind speeds. This not only avoids the waste of heat exchanger costs caused by using a heat exchanger with an area exceeding the required capacity, but also matches the wind farm, improving the overall heat exchange efficiency of the heat exchanger.

[0043] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0045] Figure 1 is a structural diagram of the air-conditioning outdoor unit provided in an embodiment of the present disclosure;

[0046] Figure 2 is a structural schematic diagram of the air-conditioning outdoor unit provided by an embodiment of the present disclosure from another perspective;

[0047] Figure 3 is a schematic diagram of matching a wind farm with a first heat exchange unit and a second heat exchange unit provided by an embodiment of the present disclosure;

[0048] Figure 4 is a structural schematic diagram of the fixing device provided in an embodiment of the present disclosure;

[0049] Figure 5 is a structural schematic diagram of the fixing device provided by an embodiment of the present disclosure from another perspective;

[0050] Figure 6 is a structural schematic diagram of the fixing device provided by an embodiment of the present disclosure from another perspective;

[0051] Figure 7 is a structural schematic diagram of the support plate provided in an embodiment of the present disclosure;

[0052] Figure 8 is a structural schematic diagram of the support plate provided by an embodiment of the present disclosure from another perspective;

[0053] Figure 9 is a structural schematic diagram of the card rack provided in an embodiment of the present disclosure;

[0054] Figure 10 is a structural schematic diagram of the card stand provided by an embodiment of the present disclosure from another perspective;

[0055] Figure 11 yes Figure 10 Enlarged schematic diagram of point A in the middle.

[0056] Reference numerals:

[0057] 10: Fan;

[0058] 20: first heat exchange part; 201: first heat exchange unit; 202: second heat exchange unit;

[0059] 30: second heat exchange part;

[0060] 40: Fixing device;

[0061] 401: supporting plate; 4011: first ventilation portion; 4012: first fixing edge; 4013: water leakage hole; 4014: first folding edge; 4015: first mounting hole; 4016: limiting groove;

[0062] 402: Card holder; 4021: Second ventilation portion; 4022: Second fixing edge; 4023: First insertion portion; 4024: Second insertion portion; 4025: Mounting edge; 4026: Threaded hole; 4027: Second folded edge; 4028: Second mounting hole; 4029: Limiting portion;

[0063] 403: Ventilation hole;

[0064] 50: first tube sheet;

[0065] 60: Second tube sheet. DETAILED DESCRIPTION

[0066] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0067] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0068] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0069] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0070] Unless otherwise stated, the term "plurality" means two or more.

[0071] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0072] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0073] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0074] Basic operating principles of air conditioners

[0075] In this application, the air conditioner performs a refrigeration cycle of the air conditioner 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 to cool or heat the indoor space.

[0076] Low-temperature, low-pressure refrigerant enters the compressor, which compresses it into high-temperature, high-pressure refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, releasing heat into the surrounding environment through the condensation process.

[0077] The expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser to a lower-pressure liquid. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves cooling by utilizing the latent heat of evaporation to exchange heat with the material being cooled. Throughout this cycle, the air conditioner regulates the temperature of the indoor space.

[0078] The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

[0079] The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger functions as a condenser, the air conditioner operates in a heating mode; when the indoor heat exchanger functions as an evaporator, the air conditioner operates in a cooling mode.

[0080] Among them, the indoor heat exchanger and the outdoor heat exchanger are converted to serve as a condenser or an evaporator, generally using a four-way valve. For specific reference, please refer to the settings of conventional air conditioners and will not be described in detail here.

[0081] The refrigeration working principle of the air conditioner is: the operation of the compressor makes the indoor heat exchanger (in the indoor unit, this is the evaporator) in an ultra-low pressure state, and the liquid refrigerant in the indoor heat exchanger evaporates rapidly to absorb heat. The air blown out by the indoor fan is cooled by the indoor heat exchanger coil and becomes cold air blown into the room. The evaporated refrigerant is pressurized by the compressor and condensed into liquid under the high-pressure environment of the outdoor heat exchanger (in the outdoor unit, this is the condenser), releasing heat. The heat is dissipated into the atmosphere through the outdoor fan, and this cycle achieves the cooling effect.

[0082] The air conditioner's heating principle works as follows: The gaseous refrigerant is pressurized by the compressor, becoming a high-temperature, high-pressure gas. It then enters the indoor heat exchanger (the condenser), where it condenses and liquefies, releasing heat and becoming a liquid. This heats the indoor air, thereby raising the indoor temperature. The liquid refrigerant is then reduced in pressure by the throttling device and enters the outdoor heat exchanger (the evaporator). It evaporates, absorbs heat, and becomes a gas, absorbing heat from the outdoor air (making the outdoor air even cooler). It then becomes a gaseous refrigerant and enters the compressor again to begin the next cycle.

[0083] Top-outlet air-conditioning outdoor unit, heat exchanger

[0084] The outdoor unit in this embodiment is a top-outlet air-conditioning outdoor unit. Figure 1 The fan is located at the top of the outdoor unit, and the heat exchanger is located below the fan and distributed around the outdoor unit. This causes the wind field of the entire outdoor unit to gradually weaken from top to bottom. The greater the air volume, the better the heat exchange efficiency of the heat exchanger, and the greater the required flow rate. This requires ensuring that the diversion flow of the top-outlet outdoor unit heat exchanger decreases from top to bottom in order to achieve the best heat exchange efficiency of the heat exchanger.

[0085] Combine Figures 1 to 11As shown, an embodiment of the present disclosure provides an air conditioner outdoor unit, comprising a housing, a fan 10, and a heat exchanger. The housing is provided with a heat exchange inlet and a heat exchange outlet, which are not specifically shown in the accompanying drawings. The heat exchange inlet is provided on the peripheral side of the housing, and the heat exchange outlet is provided on the top surface of the housing. The fan 10 is provided within the housing. Through the operation of the fan 10, the airflow outside the housing is introduced into the interior of the housing through the heat exchange inlet and discharged outward from the heat exchange outlet. The heat exchanger is provided within the housing and is located below the fan 10. The heat exchanger is used to exchange heat with the airflow. The heat exchanger is a U-shaped heat exchanger, which is arranged circumferentially along the internal installation space of the outdoor unit. The large area of ​​the heat exchanger promotes the heat exchange effect. However, due to the increase in the heat exchange area of ​​the heat exchanger, the wind resistance in the area with weaker wind field is also increased, thereby reducing the heat exchange efficiency in the corresponding area, resulting in a decrease in the overall heat exchange efficiency. This embodiment redesigns the heat exchanger, thereby not only avoiding the waste of heat exchanger costs caused by using a heat exchanger with an area exceeding the required area for the corresponding capacity, but also adapting to the wind farm and improving the overall heat exchange efficiency.

[0086] The heat exchanger includes a first heat exchange part 20 and a second heat exchange part 30 arranged above and below, and the distance from the first heat exchange part 20 to the fan 10 is greater than the distance from the second heat exchange part 30 to the fan 10; wherein, the first heat exchange part 20 and the second heat exchange part 30 respectively include one or more rows of heat exchange tube groups, and the number of rows of the heat exchange tube groups of the first heat exchange part 20 is greater than or equal to the number of rows of the heat exchange tube groups of the second heat exchange part 30.

[0087] The heat exchanger is configured as a first heat exchange section 20 and a second heat exchange section 30 arranged vertically. The number of rows of heat exchange pipes in the first heat exchange section 20 is set to be greater than or equal to the number of rows of heat exchange pipes in the second heat exchange section 30. In this way, the number of rows of heat exchange pipes in the first heat exchange section 20 and the second heat exchange section 30 can be set according to actual heat exchange conditions and matching wind field conditions. For example, when the number of rows of the heat exchange tube group of the first heat exchange part 20 is greater than the number of rows of the heat exchange tube group of the second heat exchange part 30, the first heat exchange part 20, which is closer to the fan 10, has more rows of heat exchange tube groups, and the wind speed in the area where it is located is greater than the wind speed in the area where the second heat exchange part 30 is located. Therefore, the first heat exchange part 20 has more rows of heat exchange tube groups and a larger flow rate, which can improve the heat exchange efficiency of the first heat exchange part 20 at high wind speeds; and the second heat exchange part 30 has fewer rows of heat exchange pipes and generates less wind resistance. Therefore, under low wind speed conditions, the low wind resistance of the second heat exchange part 30 can ensure higher heat exchange efficiency.

[0088] in, Figure 3 In the figure, the upper dot-dashed line frame is the area with higher wind speed, and the lower dot-dashed line frame is the area with lower wind speed.

[0089] In this embodiment, the first heat exchange portion 20 and the second heat exchange portion 30 being arranged vertically can be understood as the bottom of the first heat exchange portion 20 being arranged on the top of the second heat exchange portion 30 .

[0090] Optionally, the top of the first heat exchange portion 20 is located below the bottom of the fan 10. Optionally, the top of the first heat exchange portion 20 is located below the top of the fan 10 and above the bottom of the fan 10. Optionally, the top of the first heat exchange portion 20 is located above the top of the fan 10.

[0091] In the case where the first heat exchange portion 20 includes multiple rows of heat exchange tube groups, the heat exchange interfaces of the multiple rows of heat exchange tube groups may be connected via a flow diversion component.

[0092] Optionally, the width of a single row of heat exchange tube groups in the first heat exchange portion 20 is equal to the width of a single row of heat exchange tube groups in the second heat exchange portion 30 .

[0093] In the air conditioner indoor unit provided by the embodiment of the present disclosure, the heat exchanger is configured as a first heat exchange section 20 and a second heat exchange section 30 arranged vertically. The number of rows of heat exchange tubes in the first heat exchange section 20 is set to be greater than or equal to the number of rows of heat exchange tubes in the second heat exchange section 30. In this way, the number of rows of heat exchange tubes in the first heat exchange section 20 and the second heat exchange section 30 can be adjusted based on actual heat exchange requirements and wind field conditions. The large number of heat exchange tubes in the first heat exchange section 20 results in a large flow rate, which improves the heat exchange efficiency of the first heat exchange section 20 at high wind speeds. The small number of heat exchange tubes in the second heat exchange section 30 also reduces the wind resistance it generates. Therefore, the low wind resistance of the second heat exchange section 30 ensures high heat exchange efficiency at low wind speeds. This not only avoids the waste of heat exchanger costs caused by using a heat exchanger with an area exceeding the required capacity, but also matches the wind field, improving the overall heat exchange efficiency of the heat exchanger.

[0094] In actual applications, the number of rows of heat exchange tube groups in the first heat exchange section 20 and the second heat exchange section 30 is different, which can meet the requirements for different numbers of rows of heat exchangers. For example, when the heat exchanger requires one and a half rows, the first heat exchange section 20 and the second heat exchange section 30 each include one row of heat exchange tube groups, which is understood as one row of the heat exchanger. Another row of heat exchange tube groups is added to the first heat exchange section 20. In this way, the overall structure of the heat exchanger is designed to be one and a half rows.

[0095] This embodiment adopts a reasonable heat exchanger design scheme, and uses a freely combinable fixing device 40 to fix the upper and lower rows of heat exchange parts with unequal heights, so that the wind field distribution of the first heat exchange part 20 and the second heat exchange part 30 is more reasonable, and the heat exchanger area and system configuration are more effectively matched. At the same time, the fixing device 40 can meet the reliable fixation of heat exchange units of different sizes, give full play to the optimal heat exchanger wind field distribution and performance configuration of the air-conditioning outdoor unit, and effectively reduce the use cost of the heat exchanger of the air-conditioning outdoor unit, further improving product competitiveness.

[0096] Optionally, the first heat exchange unit 20 includes: a first heat exchange unit 201, including one or more rows of heat exchange tube groups; a second heat exchange unit 202, including one or more rows of heat exchange tube groups, and arranged side by side with the first heat exchange unit 201; a fixing device 40, provided between the first heat exchange unit 201 and the second heat exchange unit 202, for connecting and fixing the first heat exchange unit 201 and the second heat exchange unit 202. Figures 1 to 3 shown.

[0097] In this embodiment, the first heat exchange part 20 is split into a first heat exchange unit 201 and a second heat exchange unit 202. The first heat exchange unit 201 and the second heat exchange unit 202 each include one or more rows of heat exchange tube groups. In this way, the number of rows of the heat exchanger is further refined, and the cost of the heat exchanger is reduced while meeting the heat exchange requirements. In addition, the wind field is matched, the wind resistance is reduced, and the heat exchange efficiency is improved.

[0098] Fixing device 40 is located between first heat exchange unit 201 and second heat exchange unit 202, connecting and securing first heat exchange unit 201 and second heat exchange unit 202. This allows for the assembly and securing of different rows of first heat exchange units 201 and second heat exchange units 202, ensuring the reliability of the air conditioner outdoor unit during transportation and use. Fixing device 40 secures first heat exchange unit 201 and second heat exchange unit 202 to form a single, integrated assembly.

[0099] Optionally, the first heat exchange unit 201 is L-shaped, and the second heat exchange unit 202 is L-shaped. Optionally, the first heat exchange unit 201 and the second heat exchange unit 202 are symmetrically arranged. The first heat exchange portion 20 is U-shaped.

[0100] Optionally, the fixing device 40 includes: a support plate 401 having a first ventilation portion 4011, wherein the first edge of the support plate 401 is bent and extended to form a first fixed edge 4012; a bracket 402 having a second ventilation portion 4021, wherein the first edge of the bracket 402 is bent and extended to form a second fixed edge 4022; wherein the support plate 401 and the bracket 402 are detachably connected, and the first fixed edge 4012 and the second fixed edge 4022 are arranged opposite to each other. Figures 4 to 10 shown.

[0101] The fixing device 40 is ventilated through the first ventilation portion 4011 of the support plate 401 and the second ventilation portion 4021 of the bracket 402 , which can reduce the wind resistance of the airflow passing through the first heat exchange portion 20 and improve the heat exchange efficiency.

[0102] The support plate 401 is a plate-like structure, and a plurality of first ventilation portions 4011 are constructed on the support plate 401 . The plurality of first ventilation portions 4011 are arranged at intervals, so that not only the purpose of reducing wind resistance can be achieved, but also the structural strength and stability of the support plate 401 can be ensured.

[0103] Similarly, the card frame 402 is a plate-shaped structure, and is provided with a plurality of second ventilation portions 4021 , which are arranged at intervals. This not only reduces wind resistance but also ensures the structural strength and stability of the card frame 402 .

[0104] It should be noted that the ventilation areas of the plurality of first ventilation parts 4011 may be the same or different, and the ventilation areas of the plurality of second ventilation parts 4021 may be the same or different.

[0105] The first heat exchange part 20 is vertically arranged, and the supporting plate 401 and the bracket 402 are also vertically arranged, wherein the height of the supporting plate 401 and the bracket 402 after assembly is the same as that of the first heat exchange part 20 .

[0106] The first fixed edge 4012 is connected to the bottom of the first heat exchange portion 20 , and the second fixed edge 4022 is connected to the top of the first heat exchange portion 20 .

[0107] In addition, the first fixed edge 4012 and the second fixed edge 4022 have the same bending direction, and the bending dimensions of the first fixed edge 4012 and / or the second fixed edge 4022 match the first heat exchange unit 201 or the second heat exchange unit 202. This means that, when the first heat exchange unit 201 and the second heat exchange unit 202 have different numbers of heat exchange tube groups, at least one fixed edge can cover the width of the heat exchange unit with the largest number of heat exchange tube groups, thereby improving the secure connection to the heat exchange units.

[0108] In actual application, the second fixed edge 4022 is located at the top of the first heat exchange part 20. The width of the second fixed edge 4022 is designed to be greater than or equal to the width of the first fixed edge 4012. The second fixed edge 4022 covers the width of the heat exchange unit with the largest number of heat exchange tube groups, which not only improves the firmness of the connection to the heat exchange unit, but also ensures the overall aesthetics of the heat exchanger.

[0109] Optionally, ventilation holes 403 may be provided in the non-ventilated area of ​​the support plate 401 or the bracket 402 to further reduce wind resistance.

[0110] Furthermore, it should be noted that the ventilation portion and ventilation holes 403 not only ensure a ventilation path for the heat exchanger, reducing wind resistance and further improving the heat exchange efficiency of the heat exchanger, but also quickly drain water and melt ice in winter environments, such as rainy or snowy weather or when the air conditioner is heating the outdoor unit, effectively preventing ice from forming due to poor drainage, which could affect the heat exchange efficiency of the heat exchanger.

[0111] Optionally, the support plate 401 and the bracket 402 partially overlap, and the length of the overlapping area is adjustable, so that the total length of the support plate 401 and the bracket 402 after being connected is adjustable. Figures 4 to 6 shown.

[0112] Partial areas of the support plate 401 and the bracket 402 are overlapped, so that when the support plate 401 and the bracket 402 are connected, the structural strength of the connection area between the support plate 401 and the bracket 402 can be improved, that is, the overall structural strength of the fixing device 40 can be improved.

[0113] The length of the overlapping area between the support plate 401 and the bracket 402 is adjustable, which can be understood as meaning that the relative fixed position of the support plate 401 and the bracket 402 is adjustable, rather than fixed. By adjusting the relative fixed position of the support plate 401 and the bracket 402, the total length of the connected support plate 401 and the bracket 402, i.e., the total length of the fixture 40, can be adjusted. This allows the assembly requirements of heat exchange tube banks of varying heights to be met, expanding the applicability of the fixture 40.

[0114] Optionally, the first fixed edge 4012 is connected to the bottom of the first heat exchange part 20, and the second fixed edge 4022 is connected to the top of the first heat exchange part 20; wherein the edge of the second fixed edge 4022 is bent to form an inserting portion, which is inserted into the first heat exchange unit 201 and / or the second heat exchange unit 202 for fixation. Figure 4 and Figure 9 shown.

[0115] When the second fixing edge 4022 is vertically arranged, the insertion portion bends downward from the edge of the second fixing edge 4022, that is, bends toward the support plate 401. In this way, the fixing device 40 is assembled with the first heat exchange unit 20, the second fixing edge 4022 overlaps the top of the first heat exchange unit 201 and the second heat exchange unit 202, and the insertion portion is inserted downward from the top of the first heat exchange unit 201 and / or the second heat exchange unit 202, thereby achieving relative fixation between the second fixing edge 4022 and the first heat exchange unit 201 and / or the second heat exchange unit 202.

[0116] In this embodiment, the edge of the second fixed edge 4022 is formed with two insertion portions. For ease of description, the two insertion portions are defined as a first insertion portion 4023 and a second insertion portion 4024. The first insertion portion 4023 is inserted into the first heat exchange unit 201 for fixation, and the second insertion portion 4024 is inserted into the second heat exchange unit 202 for fixation. The first insertion portion 4023 and the second insertion portion 4024 are respectively located at or near the two ends of the edge of the second fixed edge 4022. A notch is defined between the first insertion portion 4023 and the second insertion portion 4024. The edge of the second fixed edge 4022 is bent at the notch in a direction opposite to the bending direction of the first insertion portion 4023 to form a mounting edge 4025. The mounting edge 4025 has a threaded hole 4026 so that it can be fixed to the rear crossbeam of the air-conditioning outdoor unit by screws. It can be understood that the first heat exchange part 20 not only realizes the connection and fixation of the first heat exchange unit 201 and the second heat exchange unit 202 through the fixing device 40, but is also connected to the rear crossbeam through the fixing device 40, further ensuring the fixation reliability of the first heat exchange part 20.

[0117] Optionally, the distance between the first inserting portion 4023 and the second inserting portion 4024 is adapted to the distance between the first heat exchange unit 201 and the second heat exchange unit 202 to constrain the relative positions of heat exchange units in different rows and achieve relative fixation.

[0118] Optionally, the support plate 401 is configured with a first folded edge 4014 on the edge in the longitudinal direction, and a plurality of first mounting holes 4015 at equal intervals are provided on the first folded edge 4014; the support plate 401 may be configured with a first folded edge 4014 on both edges in the longitudinal direction; the bracket 402 is configured with a second folded edge 4027 on the edge in the longitudinal direction, and a plurality of second mounting holes 4028 at equal intervals are provided on the second folded edge 4027; the bracket 402 may be configured with a second folded edge 4027 on both edges in the longitudinal direction; wherein the first folded edge 4014 and the second folded edge 4027 are correspondingly arranged, and fasteners are fixed through the second mounting holes 4028 and the first mounting holes 4015 to connect the support plate 401 and the bracket 402. Figures 4 to 11 shown.

[0119] When the support plate 401 is connected to the bracket 402, it can be understood that the support plate 401 and the bracket 402 are inserted relative to each other. For example, the support plate 401 and the bracket 402 are arranged parallel to each other, the bracket 402 covers the support plate 401, and the first folded edge 4014 is located inside the second folded edge 4027. After the required length of the fixing device 40 is determined, the relative position of the support plate 401 and the bracket 402 is fixed, and the fasteners pass through the corresponding first mounting holes 4015 and second mounting holes 4028 to achieve the connection and fixation of the support plate 401 and the bracket 402. The fasteners can be bolt and nut assemblies or screws.

[0120] Optionally, the support plate 401 can be formed by die stamping. The support plate 401 can be made of passivated zinc-aluminum-magnesium to improve corrosion resistance. Optionally, the bracket 402 can be formed by die stamping. The bracket 402 can be made of passivated zinc-aluminum-magnesium to improve corrosion resistance.

[0121] In this embodiment, the support plate 401 and the bracket 402 adopt a folding design, which can improve the structural strength of the entire fixing device 40, thereby effectively fixing the first heat exchange part 20 without deformation or displacement, meeting the demand for reliable fixation.

[0122] Optionally, the second edge structure of the bracket 402 has a limiting portion 4029, and the support plate 401 is provided with a plurality of limiting grooves 4016 in the length direction, and the limiting grooves 4016 are adapted to the limiting portion 4029 so that the limiting portion 4029 is engaged with the limiting grooves 4016 to fix the support plate 401 and the bracket 402. Figure 4 、 Figure 7 、 Figure 10 and Figure 11 shown.

[0123] The support plate 401 is inserted into the bracket 402, and the limiting portion 4029 is engaged and fixed with the limiting groove 4016 at the appropriate position, thereby achieving relative fixation between the support plate 401 and the bracket 402. At the same time, the first mounting hole 4015 and the second mounting hole 4028 provided by the fastener to fix the support plate 401 and the bracket 402 cooperate to form a reliable fixed constraint relationship between the support plate 401 and the bracket 402, thereby ensuring the stability and reliability of the fixing device 40.

[0124] Optionally, the limiting portion 4029 may be a claw or an axis structure.

[0125] In this embodiment, both ends of the second edge of the bracket 402 are provided with a limit portion 4029. Similarly, the position and structure of the upper limit groove 4016 on the support plate 401 match the limit portion 4029. In this way, the firmness and reliability of the connection between the support plate 401 and the bracket 402 can be further ensured.

[0126] Optionally, a water leakage hole 4013 is constructed at the bottom of the first fixed edge 4012. Multiple water leakage holes 4013 are evenly spaced on the first fixed edge 4012. The condensed water dripping from the first heat exchange part 20 to the first fixed edge 4012 can be discharged in time through the water leakage holes 4013. At the same time, in a winter environment, the water can be quickly drained and ice can be melted, effectively avoiding ice formation due to poor drainage, which affects the heat exchange efficiency of the heat exchanger. Figure 7 and Figure 8 shown.

[0127] In addition, the airflow flows from bottom to top, and the design of the water leakage hole 4013 can also reduce the wind resistance of the airflow at the first fixed edge 4012, thereby helping to improve the heat exchange efficiency of the heat exchanger.

[0128] Optionally, the width of each row of heat exchange tube groups of the first heat exchange part 20 is equal to the width of each row of heat exchange tube groups of the second heat exchange part 30 .

[0129] Designing the width of each row of heat exchange tube groups in the first heat exchange section 20 to be equal to the width of each row of heat exchange tube groups in the second heat exchange section 30 not only contributes to the overall aesthetics of the heat exchanger, but also helps to ensure the overall connection stability when the tube sheet is simultaneously connected to the first heat exchange section 20 and the second heat exchange section 30.

[0130] Combine Figures 1 to 3 As shown, in this embodiment, the air conditioner outdoor unit includes a first tube sheet 50 and a second tube sheet 60. The first tube sheet 50 can be integrally formed. The first tube sheet 50 connects the ends of the first heat exchange section 20 and the second heat exchange section 30 on the same side and can cover the heat exchange tube group of the first heat exchange section 20. The second tube sheet 60 connects the single row of heat exchange tube groups of the first heat exchange section 20 and the second heat exchange section 30. If there are multiple rows of heat exchange tube groups, a corresponding number of second tube sheets 60 are used, and adjacent second tube sheets 60 are connected by fasteners. Both the first tube sheet 50 and the second tube sheet 60 have flanged holes for hairpin tubes corresponding to the number of flow paths, which are used to secure the position of the heat exchanger and adjacent components.

[0131] Combine Figures 1 to 11 As shown, an embodiment of the present disclosure provides an air conditioner, including the air conditioner outdoor unit provided in the above embodiment. The air conditioner outdoor unit includes a casing, a fan 10 and a heat exchanger. The casing is provided with a heat exchange air inlet and a heat exchange air outlet, which are not specifically shown in the accompanying drawings. The heat exchange air inlet is provided on the peripheral side of the casing, and the heat exchange air outlet is provided on the top surface of the casing. The fan 10 is provided in the casing, and the operation of the fan 10 introduces the air flow outside the casing from the heat exchange air inlet into the inside of the casing, and outputs it to the outside from the heat exchange air outlet; the heat exchanger is provided in the casing and is located below the fan 10, and the heat exchanger is used to perform heat exchange with the air flow. The heat exchanger includes a first heat exchange part 20 and a second heat exchange part 30 arranged above and below, and the distance from the first heat exchange part 20 to the fan 10 is greater than the distance from the second heat exchange part 30 to the fan 10; wherein, the first heat exchange part 20 and the second heat exchange part 30 respectively include one or more rows of heat exchange tube groups, and the number of rows of the heat exchange tube groups of the first heat exchange part 20 is greater than or equal to the number of rows of the heat exchange tube groups of the second heat exchange part 30.

[0132] In the air conditioner provided by the embodiment of the present disclosure, the heat exchanger is configured as a first heat exchange section 20 and a second heat exchange section 30 arranged vertically. The number of rows of heat exchange tubes in the first heat exchange section 20 is set to be greater than or equal to the number of rows of heat exchange tubes in the second heat exchange section 30. In this way, the number of rows of heat exchange tubes in the first heat exchange section 20 and the second heat exchange section 30 can be adjusted based on actual heat exchange requirements and wind field conditions. The large number of heat exchange tubes in the first heat exchange section 20 results in a large flow rate, which improves the heat exchange efficiency of the first heat exchange section 20 at high wind speeds. The small number of heat exchange tubes in the second heat exchange section 30 also generates less wind resistance. Therefore, the low wind resistance of the second heat exchange section 30 ensures higher heat exchange efficiency at low wind speeds. This not only avoids the waste of heat exchanger costs caused by using a heat exchanger with an area exceeding the required capacity, but also matches the wind field, improving the overall heat exchange efficiency of the heat exchanger, thereby enhancing the performance of the air conditioner.

[0133] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An air conditioner outdoor unit, comprising: The casing is provided with a heat exchange air inlet and a heat exchange air outlet; The fan is installed in the housing, and the operation of the fan draws the airflow outside the housing into the housing through the heat exchange air inlet and outputs it out through the heat exchange air outlet; A heat exchanger is provided in the housing and below the fan, and is used to exchange heat with the airflow; The heat exchanger comprises a first heat exchange portion and a second heat exchange portion arranged vertically, and the distance from the first heat exchange portion to the fan is greater than the distance from the second heat exchange portion to the fan; The first heat exchange part and the second heat exchange part respectively include one or more rows of heat exchange tube groups, and the number of rows of heat exchange tube groups in the first heat exchange part is greater than or equal to the number of rows of heat exchange tube groups in the second heat exchange part.

2. The air conditioner outdoor unit according to claim 1, characterized in that: The first heat exchange part includes: The first heat exchange unit includes one or more rows of heat exchange tube groups; The second heat exchange unit includes one or more rows of heat exchange tube groups and is arranged side by side with the first heat exchange unit; The fixing device is provided between the first heat exchange unit and the second heat exchange unit, and is used for connecting and fixing the first heat exchange unit and the second heat exchange unit.

3. The air conditioner outdoor unit according to claim 2, characterized in that: Fixtures include: The support plate is configured with a first ventilation portion, and a first edge of the support plate is bent and extended to form a first fixed edge; The card frame is configured with a second ventilation portion, and the first edge of the card frame is bent and extended to form a second fixed edge; The supporting plate is detachably connected to the bracket, and the first fixed edge and the second fixed edge are arranged opposite to each other.

4. The air conditioner outdoor unit according to claim 3, characterized in that: Part of the area of ​​the support plate and the card frame is overlapped, and the length of the overlapping area is adjustable, so that the total length of the support plate and the card frame after being connected is adjustable.

5. The air conditioner outdoor unit according to claim 3, characterized in that: The first fixed side is connected to the bottom of the first heat exchange portion, and the second fixed side is connected to the top of the first heat exchange portion; The edge of the second fixed side is bent to form an inserting portion, and the inserting portion is inserted into the first heat exchange unit and / or the second heat exchange unit for fixation.

6. The air conditioner outdoor unit according to claim 3, characterized in that: The edge of the support plate in the longitudinal direction is constructed with a first folded edge, and the first folded edge is provided with a plurality of first mounting holes at equal intervals; The edge of the bracket in the longitudinal direction is constructed with a second folded edge, and the second folded edge is provided with a plurality of second mounting holes at equal intervals; The first folded edge and the second folded edge are arranged correspondingly, and the fastener is fixed through the second mounting hole and the first mounting hole to connect the support plate and the bracket.

7. The air conditioner outdoor unit according to claim 3, characterized in that: The second edge structure of the bracket is provided with a limiting portion, and the support plate is provided with a plurality of limiting grooves in the length direction. The limiting grooves are adapted to the limiting portion so that the limiting portion and the limiting grooves are engaged with each other to fix the support plate and the bracket.

8. The air conditioner outdoor unit according to claim 3, characterized in that: The bottom of the first fixed side is configured with a water leakage hole.

9. The air-conditioning outdoor unit according to any one of claims 1 to 8, characterized in that: The width of each row of heat exchange tube groups in the first heat exchange part is equal to the width of each row of heat exchange tube groups in the second heat exchange part.

10. An air conditioner, characterized in that: The invention comprises an air-conditioning outdoor unit according to any one of claims 1 to 9.

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