Voltage transformation device, air conditioner outdoor unit and air conditioner

Abstract

The utility model discloses a voltage transformation device which comprises a voltage transformation component and a protective shell, the protective shell comprises an inner shell component and an outer shell component, an accommodating inner shell cavity is defined by the inner shell component, the inner shell component is provided with an inner ventilation area, the outer shell component is provided with an outer heat dissipation area, and the outer shell component is arranged on the outer side of the inner shell component in a sleeving mode; a gap cavity is formed between the outer shell component and the inner shell component in a spaced mode, and the inner shell component is used for blocking suspended particulate matter so that the suspended particulate matter can be retained in the gap cavity. Meanwhile, the utility model further discloses an air conditioner outdoor unit applying the voltage transformation device and an air conditioner applying the air conditioner outdoor unit, according to the technical scheme, it can be effectively avoided that a small number of rain beads fall on the voltage transformation component under the condition of strong wind and rainstorm, and the working state of the voltage transformation component is affected, and the safety of the voltage transformation device is improved.

Description

Technical Field

[0001] The present application relates to the field of voltage transformation technology, and in particular to a voltage transformation device, an air conditioner outdoor unit, and an air conditioner. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, the secondary coil, and the iron core (magnetic core). Its main functions include voltage conversion, current conversion, impedance conversion, isolation, and voltage stabilization (magnetic saturation transformer). Transformers are widely used in residential areas, commercial centers, industrial and mining enterprises, hospitals, schools and other places. To protect the transformer, it is usually placed in a transformer cabinet. Transformer cabinets are of two types: indoor and outdoor, both of which are used to install transformers and some ancillary equipment.

[0003] In the related art, since the temperature is relatively high in summer and the transformer itself generates a certain amount of heat during operation, which poses a safety hazard to the transformer due to the high temperature, heat dissipation holes / air holes are set on the existing transformer outer box / transformer cabinet where the transformer is stored to release a large amount of heat around the transformer through the heat dissipation holes / air holes and discharge it to the outside of the transformer outer box / transformer cabinet, such as the high-efficiency heat dissipation transformer box with authorization announcement number CN219123051U disclosed on June 2, 2023, and the outdoor transformer with automatic dust removal function with authorization announcement number CN217588617U disclosed on October 14, 2022, and the fireproof transformer cabinet with authorization announcement number CN219393087U disclosed on July 21, 2023.

[0004] However, transformers placed outdoors are susceptible to erosion by storms, and water droplets from storms can enter through the heat dissipation holes / air vents and touch the transformer. Water droplets touching the transformer can affect its working condition and even cause the risk of short-circuit damage. To reduce the possibility of water entering the transformer box / transformer cabinet, as in authorization announcement number CN219393087U, a semi-arc-shaped canopy is fixedly installed on the outside of the heat dissipation holes. Alternatively, as in authorization announcement number CN217588617U, a dust cover / louver is fixedly connected to the inner top wall of the air vent. However, if there are strong winds and heavy rain, especially when the wind direction and the angle of the louver are unfavorable, a small amount of rainwater may be blown into the transformer box / transformer cabinet by the wind. Alternatively, if the canopy is not large enough or the installation angle is not appropriate, rainwater may drift from the heat dissipation holes into the transformer box / transformer cabinet under the action of the wind. In this way, water droplets will still affect the working condition of the transformer. Utility Model Content

[0005] The embodiments of the present application provide a transformer device, an air-conditioning outdoor unit, and an air conditioner, which can effectively prevent a small amount of raindrops from falling onto the transformer components in the event of strong winds and rainstorms and affecting the working state of the transformer components, thereby improving the safety of the transformer device.

[0006] In a first aspect, an embodiment of the present application provides a voltage transformation device, the voltage transformation device comprising:

[0007] Transformer components;

[0008] The protective shell includes an inner shell component and an outer shell component, the inner shell component is arranged to form an inner shell cavity, the inner shell component has an inner ventilation area, and the outer shell component has an outer heat dissipation area. The outer shell component is sleeved on the outside of the inner shell component, and a gap cavity is formed between the outer shell component and the inner shell component. The inner shell component is used to block suspended particulate matter so that the suspended particulate matter is retained in the gap cavity, and the transformer component is installed and fixed inside the inner shell cavity.

[0009] In one embodiment, the protective shell further includes a shell top cover, which is disposed on the top of the inner shell component, and at least one of the inner shell component and the outer shell component is connected to the shell top cover, and the shell top cover is used to seal the accommodating inner shell cavity.

[0010] In one embodiment, the shell top cover includes a top cover sealing portion and a top cover side sealing portion, the top cover side sealing portion extends from the top cover sealing portion toward the bottom side of the inner shell component, the top cover side sealing portion is located on the outside of the outer shell component, the top cover side sealing portion is fixedly connected to the top cover sealing portion, and the inner shell component and / or the outer shell component are detachably connected to the top cover sealing portion.

[0011] In one embodiment, the top cover sealing portion is vertically connected to the top cover side sealing portion, or the top cover side sealing portion is connected to the top cover sealing portion at an angle toward a side away from the outer shell component.

[0012] In one embodiment, a spacing space is formed between the top cover side sealing portion and the outer shell component.

[0013] In one embodiment, in a direction perpendicular to the outer side surface of the outer shell component, the top cover side sealing portion at least covers a portion of the outer heat dissipation area.

[0014] In one embodiment, the external heat dissipation area and the internal ventilation area are staggered, and in the direction perpendicular to the outer side surface of the outer shell component, the internal ventilation area is located on a side close to the top cover sealing portion, and the external heat dissipation area is located on a side away from the top cover sealing portion.

[0015] In one embodiment, the protective shell further comprises a shell base, which is disposed at the bottom of the inner shell component, and at least one of the inner shell component and the outer shell component is fixedly connected to the shell base.

[0016] In one embodiment, the shell base includes a fixed seat body and at least one support beam portion, a seat inner cavity is provided in the fixed seat body portion, and at least one support beam portion is embedded and fixed inside the seat inner cavity. In a first direction, the support beam portion is located within the coverage range of the accommodating inner shell cavity, and the first direction is the positive projection direction from the side close to the shell top cover to the side close to the shell base.

[0017] In one embodiment, one of the inner shell component and the outer shell component is provided with a shell limiter, the shell limiter extends toward the first direction, the shell limiter is located outside the fixed seat body, and the shell limiter abuts against the side wall of the fixed seat body.

[0018] In one embodiment, the voltage transformation component includes a transformer element and an electric control element, and the transformer element is electrically connected to the electric control element through a conductive wire.

[0019] In a second aspect, an embodiment of the present application provides an air-conditioning outdoor unit, which includes a casing and the above-mentioned transformer device, wherein a fan cavity and an electrical cavity are provided in the casing, and the transformer device is installed and fixed in the electrical cavity.

[0020] In a third aspect, an embodiment of the present application provides an air conditioner, comprising the above-mentioned air conditioner outdoor unit.

[0021] Based on the above embodiments, the transformer device proposed in the embodiments of the present application includes a transformer component and a protective shell, the protective shell includes an inner shell component and an outer shell component, the inner shell component is arranged to form an inner shell cavity, the inner shell component has an inner ventilation area, the outer shell component has an outer heat dissipation area, the outer shell component is sleeved on the outside of the inner shell component, and a gap cavity is formed between the outer shell component and the inner shell component, the inner shell component is used to block suspended particulate matter so that the suspended particulate matter is retained in the gap cavity, and the transformer component is installed and fixed inside the inner shell cavity.

[0022] Compared with the related technology, the technical solution of the present application can achieve that a small amount of suspended particulate matter passing through the external heat dissipation area is blocked by the inner shell component and retained in the gap cavity through the cooperation between the inner shell component and the gap cavity, thereby effectively avoiding a small amount of raindrops falling on the transformer component in the case of strong winds and rainstorms and affecting the working state of the transformer component, thereby improving the safety of the transformer device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0024] Figure 1 This is a schematic diagram of the assembly of a transformer device according to one embodiment of the present invention;

[0025] Figure 2 This is a schematic top view of a transformer device according to an embodiment of the present invention;

[0026] Figure 3 for Figure 2 Schematic cross-sectional view at EE in the middle;

[0027] Figure 4 for Figure 3 A partial enlarged view of the F position in the middle;

[0028] Figure 5 This is a schematic diagram of a partial explosion of a protective housing according to an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of an overall explosion of a protective housing according to an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the overall structure of the protective housing according to one embodiment of the present invention;

[0031] Figure 8 This is a half-section assembly diagram of a protective housing according to an embodiment of the present invention;

[0032] Figure 9 This is a schematic structural diagram of the inner shell component in the present utility model;

[0033] Figure 10 This is a schematic structural diagram of the first shell wall in the present invention.

[0034] Description of Figure Numbers:

[0035] 1-protective shell, 11-inner shell component, 111-inner ventilation area, 112-first inner shell wall, 113-second inner shell wall, 114-first inner side wall, 115-second inner side wall, 116-inner extension, 117-inner ventilation port, 118-inner shell reinforcement portion, 119-first bending portion, 110-second bending portion, 12-accommodating inner shell cavity, 13-outer shell component, 131-external heat dissipation area, 132-external heat dissipation port, 133-louver baffle, 134-first outer shell wall, 135-second outer shell wall, 136- First outer wall, 137-second outer wall, 14-gap cavity, 141-first flow guide cavity, 142-second flow guide cavity, 15-shell top cover, 151-top cover sealing part, 152-top cover side sealing part, 16-spacing space, 17-shell base, 171-fixed seat body, 172-support beam part, 173-seat body cavity, 18-shell limiter, 19-inner supporting member, 191-inner force-bearing part, 192-inner supporting part, 10-outer supporting member, 101-outer force-bearing part, 102-outer supporting part, 2-voltage transformer.

[0036] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of this application clearer, the following part will further describe the embodiments of this application in detail with reference to the accompanying drawings.

[0038] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application, as detailed in the appended claims.

[0039] In the description of this application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, in the description of this application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0041] The present application provides an air conditioner, including an outdoor air conditioner, wherein the outdoor air conditioner includes a housing and a transformer, wherein a fan chamber and an electrical chamber are provided in the housing, and the transformer is fixedly installed in the electrical chamber.

[0042] In this embodiment, please refer to Figure 1 As shown, the present application proposes a transformer device comprising a protective housing 1 and a transformer component 2, wherein the transformer component 2 includes a transformer element and an electronic control element. The transformer element is electrically connected to the electronic control element via a conductive wire. The number of transformer elements can be set and adjusted according to design requirements. For example, multiple transformer elements can be connected in series and parallel and combined with electronic control elements to convert 575V to 460V, thereby achieving the purpose of converting the input voltage of 575V to the output voltage of 460V. Furthermore, the transformer component 2 is mounted and fixed within the accommodating inner shell cavity 12 of the protective housing 1.

[0043] Since the transformer components release a large amount of heat into the accommodating inner shell cavity 12 during operation, in order to prevent a large amount of heat from being retained in the accommodating inner shell cavity 12 and causing the temperature of the accommodating inner shell cavity 12 to be too high, thereby affecting the working state of the transformer components and the electronic control components, the existing solution is to use heat dissipation holes to discharge the large amount of heat in the accommodating inner shell cavity 12 to the outside of the protective shell 1, so as to ensure that the accommodating inner shell cavity 12 is within a relatively stable temperature range, thereby ensuring that the transformer components and the electronic control components are in a better working state. Typically, the transformer device is placed in an external environment, and rainwater in the external environment will fall into the protective shell 1 of the transformer device. However, some rainwater will fall into the accommodating inner shell cavity 12 through the heat dissipation holes under the drive of the flowing air. In particular, in weather conditions with strong winds or heavy rain, more rainwater will enter the accommodating inner shell cavity 12 and easily cause the transformer component 2 to short-circuit.

[0044] In view of the above problems, the inventor provides a protective shell 1. Figure 2 ,to Figure 8As shown, the protective housing 1 includes an inner housing member 11 and an outer housing member 13. The inner housing member 11 is arranged to enclose an inner housing cavity 12 and has an inner ventilation area 111. The outer housing member 13 has an outer heat dissipation area 131. The outer housing member 13 is sleeved on the outside of the inner housing member 11, and a gap cavity 14 is formed between the outer housing member 13 and the inner housing member 11. The inner housing member 11 is used to block suspended particulate matter so that the suspended particulate matter is retained in the gap cavity 14. It should be noted that the suspended particulate matter here is understood to be small water droplets, dust suspended in the air, mist formed by small water droplets in the air adhering to dust, and some fine garbage.

[0045] With this arrangement, when some suspended particulate matter passes through the inner ventilation area 111 under the action of strong air flow, it will enter the gap cavity 14 between the outer shell component 13 and the inner shell component 11. Blocked by the inner shell component 11, the suspended particulate matter, especially small water droplets, will adhere to the inner shell component 11 and drip to the bottom of the gap cavity 14 under the action of gravity and be collected and stored in the gap cavity 14. Instead of passing through the outer heat dissipation area 131 with the air flow and entering the inner shell cavity 12, the short circuit problem of the transformer component 2 in the inner shell cavity 12 is effectively avoided. The air flow then sequentially passes through the inner shell cavity 12, the inner ventilation area 111, and the outer heat dissipation area 131 and is output to the outside of the outer shell component 13. During the flow process, the air flow will also carry a large amount of heat and output it to the outside of the outer shell component 13, achieving the effect of heat dissipation. It can also ensure that the temperature inside the inner shell cavity 12 is within a relatively stable temperature range, thereby ensuring that the transformer components and electronic control components are in a better working condition.

[0046] In this embodiment, please refer to Figures 5 to 9 As shown, the inner shell component 11 has a first inner shell wall 112, a second inner shell wall 113, a first inner side wall 114 and a second inner side wall 115. The first inner shell wall 112 and the second inner shell wall 113 are distributed opposite to each other, and the first inner side wall 114 and the second inner side wall 115 are distributed opposite to each other. The two opposite sides of the first inner shell wall 112 are respectively connected to the first inner side wall 114 and the second inner side wall 115, and the two opposite sides of the second inner shell wall 113 are respectively connected to the first inner side wall 114 and the second inner side wall 115. The connection here can be optionally integrated, can also be optionally a snap-on connection, can also be optionally a butt connection, can also be a bolt connection, and can also be an welded connection.

[0047] For example, Figure 9As shown, in order to ensure the convenience and efficiency of manufacturing the inner shell component 11 and to ensure the good structural strength of the inner shell component 11, the first inner side wall 114 and the second inner shell wall 113 are bent and formed, and the second inner side wall 115 and the second inner shell wall 113 are bent and formed, and the first inner side wall 114, the second inner side wall 115 and the second inner shell wall 113 are formed into a U-shaped structure. Figure 5 、 Figure 6 and Figure 7 As shown, the first inner shell wall 112 is used to bend and form a first bending portion 119 on one side close to the first inner side wall 114, and the second inner shell wall 113 is used to bend and form a second bending portion 110 on one side close to the second inner side wall 115. Through the cooperation between the first bending portion 119 and the second bending portion 110, the first inner shell wall 112 will be able to be clamped and spliced ​​with the U-shaped structure, and the first inner shell wall 112, the second inner shell wall 113, the first inner side wall 114 and the second inner side wall 115 of the inner shell component 11 are arranged to form the above-mentioned accommodating inner shell cavity 12.

[0048] In this embodiment, please refer to Figure 5 and Figure 6 As shown, the outer shell component 13 includes a first outer shell wall 134, a second outer shell wall 135, a first outer side wall 136 and a second outer side wall 137. The first outer shell wall 134 and the second outer shell wall 135 are relatively distributed, and the first outer side wall 136 and the second outer side wall 137 are relatively distributed. The two opposite sides of the first outer shell wall 134 are respectively connected to the first outer side wall 136 and the second outer side wall 137, and the two opposite sides of the second outer shell wall 135 are respectively connected to the first outer side wall 136 and the second outer side wall 137. The connection here can be optionally one-piece molding, a snap connection, an abutment connection, a bolt connection, or a welding connection.

[0049] For example, Figure 5 and Figure 6 As shown, in order to ensure the convenience and efficiency of producing the outer shell component 13 and to ensure the good structural strength of the outer shell component 13, the first outer wall 136 and the second outer shell wall 135 are bent and formed, and the second outer wall 137 and the second outer shell wall 135 are bent and formed, and the first outer wall 136, the second outer wall 137 and the second outer shell wall 135 are formed into a U-shaped structure, and the two opposite sides of the first outer shell wall 134 respectively abut the first outer wall 136 and the second outer wall 137, so that the first outer shell wall 134 can be fixedly connected to the U-shaped structure.

[0050] During the installation process, after the transformer component 2 is placed in the accommodating inner shell cavity 12, the first inner shell wall 112 is clamped and spliced ​​to form a U-shaped structure formed by the first inner side wall 114, the second inner side wall 115 and the second inner shell wall 113. Then, the U-shaped structure formed by the first outer side wall 136, the second outer side wall 137 and the second outer shell wall 135 is sleeved on the inner shell component 11. Finally, the abutment reinforcement of the first outer shell wall 134 is completed. The reinforcement here can be optionally bolted or welded. It should be noted that the above-mentioned installation steps are only for reference, so as to facilitate the structure of the transformer device and its protective shell 1 and its connection relationship, but are not limited to the above-mentioned installation steps and can be revised and adjusted according to assembly requirements and design needs.

[0051] In some embodiments, please refer to Figures 3 to 8 As shown, a support member is provided on at least one of the inner shell member 11 and the outer shell member 13, and the support member protrudes from one of the inner shell member 11 and the outer shell member 13 toward the other and abuts against it to separate the gap cavity 14 into a first guide cavity 141 and a second guide cavity 142.

[0052] As one of the preferred methods of this embodiment, please refer to Figure 9 As shown, the support member includes an inner support member 19 disposed on the inner housing member 11. The inner support member 19 is formed to protrude from the inner housing member 11 toward the outer housing member 13, and the inner support member 19 extends along the circumference of the inner housing member 11. It can be understood that the inner support member 19 is disposed on a portion of the outer circumference of the inner housing member 11, for example, the inner support member 19 is disposed on the first inner sidewall 114, the second inner sidewall 115, and the second inner shell wall 113. Alternatively, the inner support member 19 is uniformly disposed on the outer circumference of the inner housing member 11, that is, the first inner sidewall 114, the second inner sidewall 115, the first inner shell wall 112, and the second inner shell wall 113 are all provided with the inner support member 19.

[0053] Preferred, please refer to Figure 9 As shown, inner support member 19 is a U-shaped structure, comprising an inner force-bearing portion 191 and inner support portions 192 disposed on opposite sides of inner force-bearing portion 191. The inner force-bearing portion 191 and the inner support portions 192 are fixedly connected, either by welding or by integral molding. This arrangement significantly reduces the weight of inner support member 19 and provides a simple structure for ease of manufacture. To ensure the structural strength of inner support member 19, internal reinforcement ribs are provided between inner force-bearing portion 191 and inner support portion 192.

[0054] It should be noted that the inner force-bearing portion 191 of the inner support member 19 is preferably integrally formed with the inner shell member 11, which not only ensures the comprehensive performance of the connection part between the inner shell member 11 and the inner support member 19, but also the inner support member 19 as a whole can serve as a reinforcement rib of the inner shell member 11, thereby improving the overall structural strength of the inner shell member 11 and reducing or even avoiding deformation of the inner shell member 11 during long-term use.

[0055] In addition, if Figure 4 As shown, under the action of the inner support member 19, the outer shell member 13 will automatically form a gap cavity 14 after being sleeved on the outer side of the inner shell member 11, which simplifies the assembly process, reduces the assembly difficulty, and effectively improves the assembly efficiency. Figure 8 As shown, after the inner shell component 11 and the outer shell component 13 are assembled, the outer shell component 13 abuts against the inner force-bearing portion 191 on the inner support component 19, making the assembly of the protective shell 1 more compact.

[0056] In addition to the above-mentioned preferred method of integrally forming the inner support member 19 and the inner shell member 11, the inner support portion 192 of the inner support member 19 is bolted to the inner shell member 11, or the inner support portion 192 of the inner support member 19 is welded to the inner shell member 11, or the inner support portion 192 of the inner support member 19 is snap-connected to the inner shell member 11.

[0057] As another preferred method of this embodiment, please refer to Figure 10 As shown, the support member includes an outer support member 10 disposed on the outer shell member 13. The outer support member 10 is formed to protrude from the outer shell member 13 toward the inner shell member 11, and the outer support member 10 extends along the circumference of the outer shell member 13. It is understood that the outer support member 10 is disposed on a portion of the outer circumference of the outer shell member 13, for example, the outer support member 10 is disposed on the first inner shell wall 112. Alternatively, the outer support member 10 is uniformly disposed on the inner circumference of the outer shell member 13, that is, the outer support member 10 is disposed on the first outer side wall 136, the second outer side wall 137, the first shell wall 134, and the second shell wall 135.

[0058] Preferred, please refer to Figure 10As shown, the outer support member 10 is a U-shaped structure, namely, the outer support member 10 includes an outer force-bearing portion 101 and outer support portions 102 disposed on opposite sides of the outer force-bearing portion 101. The outer force-bearing portion 101 and the outer support portions 102 are fixedly connected, and the fixed connection here is welded or integrally formed. This arrangement greatly reduces the weight of the outer support member 10, and the structure is simple, making it easy to manufacture. To ensure the structural strength of the outer support member 10, external reinforcement ribs are provided between the outer force-bearing portion 101 and the outer support portion 102.

[0059] It should be noted that the outer force-bearing portion 101 of the outer support member 10 is preferably integrally formed with the outer shell member 13, which not only ensures the comprehensive performance of the connection part between the outer shell member 13 and the outer support member 10, but also the outer support member 10 as a whole can serve as a reinforcement rib of the outer shell member 13, thereby improving the overall structural strength of the outer shell member 13 and reducing or even avoiding deformation of the outer shell member 13 during long-term use.

[0060] In addition, if Figure 4 As shown, under the action of the outer support member 10, the outer shell member 13 can also form a gap cavity 14 by itself after being sleeved on the outer side of the inner shell member 11, which simplifies the assembly process, reduces the assembly difficulty, and effectively improves the assembly efficiency. Figure 8 As shown, after the inner shell component 11 and the outer shell component 13 are assembled, the inner shell component 11 abuts against the outer force-bearing portion 101 on the outer support component 10, which also makes the assembly of the protective shell 1 more compact.

[0061] In addition to the preferred method of integrally forming the outer support member 10 and the outer shell member 13, the outer support portion 102 of the outer support member 10 is bolted to the outer shell member 13, or the outer support portion 102 of the outer support member 10 is welded to the outer shell member 13, or the outer support portion 102 of the outer support member 10 is snap-connected to the outer shell member 13.

[0062] Preferred, please combine Figures 5 to 9 As shown, the end of the inner housing member 11 that is away from the transformer component 2 is defined as the top of the inner housing member 11, and the end of the inner housing member 11 that is close to the transformer component 2 is defined as the bottom of the inner housing member 11. The protective housing 1 also includes a housing top cover 15 for sealing the inner housing cavity 12. The housing top cover 15 is provided on the top of the inner housing member 11. Small water droplets dripping on the housing top cover 15 will not fall into the interior of the inner housing cavity 12, further avoiding the risk of small water droplets entering the inner housing cavity 12 and causing a short circuit in the transformer component 2, thereby improving the safety and stability of the transformer device.

[0063] It should be noted that the inner support member 19 and the outer support member 10 can be used alone. Figures 4 to 8 As shown, the inner support member 19 and the outer support member 10 can be used in combination.

[0064] Further, please refer to Figures 5 to 9 As shown, at least one of the inner housing member 11 and the outer housing member 13 is connected to the housing top cover 15. Preferably, an inner extension portion 116 is provided at the top of the inner housing member 11. The inner extension portion 116 extends from the inner housing member 11 toward the outer housing member 13 and is used to abut and support the housing top cover 15. This configuration increases the contact area between the inner housing member 11 and the housing top cover 15 under the action of the inner extension portion 116, which not only increases the force-bearing area between the inner housing member 11 and the housing top cover 15 and reduces wear on the housing top cover 15, but also allows the housing top cover 15 to be bolted to the inner extension portion 116, thereby strengthening the connection between the housing top cover 15 and the inner housing member 11 and preventing the housing top cover 15 from being detached from the inner housing member 11.

[0065] Of course, in addition to the aforementioned arrangement of the inner extension 116 at the top of the inner housing member 11, the top of the outer housing member 13 is also provided with an outer extension. The outer extension extends from the outer housing member 13 toward the inner housing member 11 and is used to abut and support the housing top cover 15. The top of the outer housing member 13 is the end of the outer housing member 13 that is positioned close to the housing top cover 15. Thus, the outer extension increases the contact area between the outer housing member 13 and the housing top cover 15, which not only increases the force-bearing area between the outer housing member 13 and the housing top cover 15 but also reduces wear on the housing top cover 15. Furthermore, the housing top cover 15 can be bolted to the outer extension, thereby strengthening the mounting connection of the housing top cover 15.

[0066] It should be noted that the inner extension portion 116 is provided at the top of the inner shell member 11 and the outer extension portion is provided at the top of the outer shell member 13 can be used alone or in combination.

[0067] Specifically, see Figures 4 to 8 As shown, the housing top cover 15 includes a top cover sealing portion 151 and a top cover side sealing portion 152. The top cover side sealing portion 152 extends from the top cover sealing portion 151 toward the bottom side of the inner housing member 11. The top cover side sealing portion 152 is located outside the outer housing member 13. The top cover side sealing portion 152 is fixedly connected to the top cover sealing portion 151. The inner housing member 11 and / or the outer housing member 13 can be detachably connected to the top cover sealing portion 151. The fixed connection here is preferably integrally formed, and can also be a welded connection.

[0068] Preferably, please combine Figures 4 to 8 As shown, the top cover sealing portion 151 is perpendicularly connected to the top cover side sealing portion 152, which reduces the assembly gap between the housing top cover 15 and the outer shell member 13, thereby achieving a compact assembly of the protective housing 1. Of course, the top cover side sealing portion 152 can also be connected to the top cover sealing portion 151 at an angle toward the side away from the outer shell member 13, that is, the top cover side sealing portion 152 is arranged at an angle to the outer shell member 13, so that the shielding range of the housing top cover 15 is larger, thereby improving the shielding effect of the housing top cover 15.

[0069] As the preferred method of this embodiment, please refer to Figure 4 As shown, a spacing space 16 is formed between the top cover side seal portion 152 and the outer shell member 13. This further increases the shielding range of the housing top cover 15 and prevents frictional resistance generated by direct contact between the inner side of the housing top cover 15 and the outer shell member 13, ensuring ease of closing the housing top cover 15. Furthermore, external air can flow through the spacing space 16, pass through the external heat dissipation area 131, the interstitial cavity 14, and the internal ventilation area 111, and finally flow into the inner shell cavity 12, effectively dissipating heat from the transformer component 2.

[0070] Preferably, if Figure 8 As shown, the inner extension 116 can abut the top cover sealing portion 151, thereby achieving rapid positioning of the housing top cover 15 during installation on the inner housing member 11. In addition, the inner extension 116 extends beyond the outer housing member 13, so that the housing top cover 15 automatically and accurately forms the aforementioned spacing space 16 after being assembled with the inner housing member 11. Of course, the outer extension extends beyond the outer housing member 13 in a direction away from the inner housing member 11, which also automatically and accurately forms the aforementioned spacing space 16 after the housing top cover 15 is assembled with the inner housing member 11.

[0071] As a further preferred embodiment of this embodiment, please refer to Figure 8 As shown, in a direction perpendicular to the outer side surface of the outer shell member 13, the top cover side seal portion 152 covers at least a portion of the outer heat dissipation area 131, thereby preventing some suspended particles from passing through the outer heat dissipation area 131 and entering the gap cavity 14, thereby further preventing suspended particles from entering the accommodating inner shell cavity 12. Therefore, the top cover side seal portion 152 of the shell top cover 15 cooperates with the gap cavity 14 to achieve a double protection effect.

[0072] Further, please refer to Figure 8As shown, the outer heat dissipation region 131 and the inner ventilation region 111 are staggered, and in a direction perpendicular to the outer side surface of the outer shell member 13, the inner ventilation region 111 is located on a side close to the top cover sealing portion 151, and the outer heat dissipation region 131 is located on a side away from the top cover sealing portion 151. It can be understood that in a direction perpendicular to the outer side surface of the outer shell member 13, the inner ventilation region 111 preferably does not overlap with the outer heat dissipation region 131, and the inner ventilation region 111 can also partially overlap with the outer heat dissipation region 131.

[0073] This arrangement effectively ensures that suspended particulate matter entering the interstitial cavity 14 is blocked by the inner housing member 11, thereby further preventing suspended particulate matter from entering the accommodating inner housing cavity 12 and affecting the operating state and operational stability of the transformer component 2. It also avoids the risk of suspended particulate matter entering the accommodating inner housing cavity 12 and causing failure of the transformer component 2. Through multiple tests, it has been determined that the staggered arrangement of the outer heat dissipation area 131 and the inner ventilation area 111, combined with the top cover side seal portion 152 of the housing top cover 15 and the interstitial cavity 14, can effectively block suspended particulate matter from entering the accommodating inner housing cavity 12, achieving optimal protection.

[0074] As the preferred method of this embodiment, please refer to Figures 1 to 4 As shown, the protective housing 1 also includes a housing base 17, which is located at the bottom of the inner housing member 11. At least one of the inner housing member 11 and the outer housing member 13 is fixedly connected to the housing base 17. The fixed connection here can be a bolt connection, a welded connection, or a snap connection. In this way, the housing base 17, the housing top cover 15, and the inner housing member 11 cooperate to form a relatively closed space containing the inner shell cavity 12. At the same time, the transformer component 2 is mounted and fixed on the housing base 17, thereby facilitating the transportation of the transformer device.

[0075] Further, please refer to Figure 4 As shown, the housing base 17 includes a fixed seat body 171 and a support beam 172. The fixed seat body 171 is provided with a seat inner cavity 173. The support beam 172 is embedded in and fixed within the seat inner cavity 173. In a first direction, the support beam 172 is located within the coverage area of ​​the accommodating inner housing cavity 12. The first direction is the orthographic projection direction from the side close to the housing top cover 15 to the side close to the housing base 17. It should be noted that the number of support beams 172 can be one, and in the first direction, one support beam 172 is preferably located in the middle of the accommodating inner housing cavity 12. The number of support beams 172 can also be multiple.

[0076] With such a configuration, under the action of the support beam 172, the structural strength of the shell base 17 can be effectively guaranteed, thereby better ensuring that the shell base 17 of the transformer device will not be deformed during transportation, thereby avoiding the problem of poor contact caused by the misalignment of the transformer component 2 accommodated in the inner shell cavity 12, and improving the stability of the transformer device.

[0077] In order to facilitate the assembly of the protective shell 1 and improve the assembly efficiency of the protective shell 1, the inventor provides a preferred method. Figures 6 to 9 As shown, one of the inner shell component 11 and the outer shell component 13 is provided with a shell limiter 18, which extends in the first direction, is located outside the fixed seat body 171, and abuts against the side wall of the fixed seat body 171.

[0078] It should also be noted that in order to ensure that the inner shell member 11 and the outer shell member 13 can be firmly fixed on the fixed seat portion 171 of the shell base 17, please refer to the Figure 9 As shown, the inner shell member 11 is provided with an inner shell reinforcement portion 118, which is vertically connected to the inner shell member 11 and extends toward a side away from the inner shell cavity 12. Figure 5 and Figure 6 As shown, when the inner shell component 11 and the outer shell component 13 are installed and fixed on the shell base 17, the inner shell reinforcement portion 118 will abut against the fixed seat portion 171. Under the action of the inner shell reinforcement portion 118, the contact area between the inner shell component 11 and the shell base 17 is increased, thereby ensuring that the inner shell component 11 and the outer shell component 13 can be firmly installed on the shell base 17.

[0079] And / or, a shell reinforcement portion is provided on the outer shell component 13, the shell reinforcement portion is perpendicular to the outer shell component 13, and the shell reinforcement portion extends toward the side away from the inner shell cavity 12. Under the action of the shell reinforcement portion, the contact area between the outer shell component 13 and the shell base 17 is increased, and it can also be ensured that the inner shell component 11 and the outer shell component 13 can be firmly installed on the shell base 17.

[0080] The protective housing 1 described above can effectively prevent suspended particulate matter from entering the inner housing cavity 12, preventing it from affecting the operating state of the transformer component 2. Existing heat dissipation holes typically discharge heat from the inner housing cavity 12 to the exterior of the protective housing 1. That is, the relatively cool air outside the protective housing 1 enters the inner housing cavity 12 through the heat dissipation holes, while the large amount of hot air in the inner housing cavity 12 is released to the exterior of the protective housing 1 through the heat dissipation holes.

[0081] However, directly creating existing heat dissipation holes in the protective housing 1 does not easily create air flow, thus affecting the heat dissipation capacity of the air. The transformer component 2 and the air surrounding it still retain a significant amount of heat. Currently, the large amount of heat released by the transformer component 2 must be released into the inner housing cavity 12 before being dissipated through the heat dissipation holes. This heat dissipation method requires the large amount of heat released by the transformer component 2 to diffuse slowly, resulting in low heat dissipation efficiency. Failure to dissipate this large amount of heat promptly will significantly affect the operating state of the transformer component 2.

[0082] In view of the above problems, the inventors have also disclosed a preferred method, such as Figure 8 As shown, the above-mentioned gap cavity 14 includes two relatively independent first guide cavities 141 and second guide cavities 142. The first guide cavity 141 is close to the top of the inner shell member 11, and the second guide cavity 142 is close to the bottom of the inner shell member 11. The first guide cavity 141 and the second guide cavity 142 are both connected to the accommodating inner shell cavity 12 through the inner ventilation area 111, so that the flowing air is guided from the second guide cavity 142 to the first guide cavity 141. With this arrangement, the flowing air outside the protective shell 1 can enter the second guide cavity 142 from the outer heat dissipation area 131, and flow toward the top of the inner shell member 11 under the guiding effect of the second guide cavity 142 until the flowing air flows through the inner ventilation area 111 and enters the accommodating inner shell cavity 12. At this time, the flowing air will flow through the side of the changing component close to the top of the inner shell component 11, and in the process of flowing through the changing component, it will be able to carry a large amount of heat released by the changing component and flow toward the first guide cavity 141. When the flowing air flows toward the outer heat dissipation area 131 under the guiding action of the first guide cavity 141, the flowing air finally flows through the outer heat dissipation area 131 and is output to the outside of the inner shell component 11.

[0083] Based on the above, Figure 4 As shown, the flow of air is subject to less resistance from the transformer component 2, thereby ensuring and improving the smoothness of the flow of the flow of air, so that a large amount of heat released by the transformer component 2 can be quickly discharged to the outside of the protective shell 1, thereby improving the heat dissipation efficiency of the transformer component 2, thereby very effectively ensuring that the transformer component 2 is in the best use state.

[0084] It should be noted that, please refer to Figures 5 to 10 As shown, the inner ventilation area 111 is provided with a plurality of evenly arranged inner ventilation openings 117 , and the outer heat dissipation area 131 is provided with a plurality of outer heat dissipation openings 132 , which are preferably evenly arranged.

[0085] An unexpected effect is that the staggered arrangement of the outer heat dissipation area 131 and the inner ventilation area 111 will enable the above-mentioned flowing air to flow in the first guide cavity 141 and to flow in a directional manner in the second guide cavity 142. At the same time, the top cover side seal portion 152 of the shell top cover 15 covers at least a portion of the outer heat dissipation area 131 in a direction perpendicular to the outer side surface of the outer shell component 13, which will be able to block most or even all of the flowing air from entering the first guide cavity 141, thereby effectively ensuring that the flowing air inside the inner shell cavity 12 is guided from the second guide cavity 142 to the first guide cavity 141, forming effective convection, and ultimately ensuring that the flowing air carrying a large amount of heat is discharged from the first guide cavity 141, further improving the heat dissipation efficiency of the transformer component 2.

[0086] As a preferred solution of this embodiment, please refer to Figure 4 As shown, in the direction perpendicular to the outer side surface of the outer shell member 13, the inner support member 19 is preferably located in the middle of the outer shell member 13. At this time, the gap cavity 14 is separated by the inner support member 19 to form a first guide cavity 141 and a second guide cavity 142. When the flowing air flows to the inner support member 19, it will be blocked by the inner support member 19, so that the flowing air cannot flow between the first guide cavity 141 and the second guide cavity 142, thereby achieving the purpose of relatively independent settings between the first guide cavity 141 and the second guide cavity 142. At the same time, as Figure 8 As shown, it is also possible to better guide the flowing air to pass through the inner ventilation area 111 and flow into the accommodating inner shell cavity 12 , and / or better guide the flowing air to pass through the outer heat dissipation area 131 and flow into the accommodating inner shell cavity 12 .

[0087] As a preferred solution of this embodiment, please refer to Figure 4 As shown, in the direction perpendicular to the outer side surface of the outer shell member 13, the outer support member 10 is preferably located in the middle of the outer shell member 13. At this time, the gap cavity 14 is separated by the outer support member 10 to form a first guide cavity 141 and a second guide cavity 142. When the flowing air flows to the outer support member 10, it will be blocked by the outer support member 10, so that the flowing air cannot flow between the first guide cavity 141 and the second guide cavity 142. The purpose of relatively independent setting between the first guide cavity 141 and the second guide cavity 142 can also be achieved. At the same time, as Figure 8 As shown, it is also possible to better guide the flowing air to pass through the inner ventilation area 111 and flow into the accommodating inner shell cavity 12 , and / or better guide the flowing air to pass through the outer heat dissipation area 131 and flow into the accommodating inner shell cavity 12 .

[0088] It should be noted that one of the inner support member 19 and the outer support member 10 can be used to separate and form a relatively independent first guide cavity 141 and second guide cavity 142, and the inner support member 19 and the outer support member 10 can also be used to cooperate to separate and form a relatively independent first guide cavity 141 and second guide cavity 142.

[0089] As a further preferred solution of this embodiment, please refer to Figure 4 and Figure 5 As shown, at least part of the edge of the external heat dissipation vent 132 is provided with a louver baffle 133, which is provided inside the gap cavity 14, so that the flow of air outside the protective housing 1 is changed under the action of the louver baffle 133, so as to better guide the flow of air to flow along the gap cavity 14. Specifically, as Figure 10 As shown, a plurality of external heat dissipation vents 132 are arranged in an array along the first direction, and a shutter baffle 133 is arranged on the external heat dissipation vents 132 on the side close to the housing top cover 15. Figure 8 As shown, the shutter baffle 133 is extended toward one side of the shell base 17, wherein the shutter baffle 133 can be a straight plate structure or a curved plate structure.

[0090] The above is an explanation of the protective shell 1 proposed in the embodiment of the present application. Since the transformer device proposed in the embodiment of the present application adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0091] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0092] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A voltage conversion device, characterized in that: include: Transformer components; The protective shell includes an inner shell component and an outer shell component, the inner shell component is arranged to form an inner shell cavity, the inner shell component has an inner ventilation area, and the outer shell component has an outer heat dissipation area. The outer shell component is sleeved on the outside of the inner shell component, and a gap cavity is formed between the outer shell component and the inner shell component. The inner shell component is used to block suspended particulate matter so that the suspended particulate matter is retained in the gap cavity, and the transformer component is installed and fixed inside the inner shell cavity.

2. The voltage transformation device according to claim 1, wherein: The protective shell further comprises a shell top cover, which is disposed on the top of the inner shell component. At least one of the inner shell component and the outer shell component is connected to the shell top cover, and the shell top cover is used to seal the accommodating inner shell cavity.

3. The voltage transformation device according to claim 2, characterized in that: The shell top cover includes a top cover sealing portion and a top cover side sealing portion, the top cover side sealing portion extends from the top cover sealing portion toward the bottom side of the inner shell component, the top cover side sealing portion is located on the outside of the outer shell component, the top cover side sealing portion is fixedly connected to the top cover sealing portion, and the inner shell component and / or the outer shell component are detachably connected to the top cover sealing portion.

4. The voltage transformation device according to claim 3, wherein: The top cover sealing portion is vertically connected to the top cover side sealing portion, or the top cover side sealing portion is obliquely connected to the top cover sealing portion toward a side away from the outer shell component.

5. The voltage conversion device according to claim 3 or 4, characterized in that: A spacing space is formed between the top cover side sealing portion and the outer shell component.

6. The voltage conversion device according to claim 3 or 4, characterized in that: In a direction perpendicular to the outer side surface of the outer shell component, the top cover side sealing portion at least covers a portion of the outer heat dissipation area.

7. The voltage conversion device according to claim 3 or 4, characterized in that: The outer heat dissipation area and the inner ventilation area are staggered, and in the direction perpendicular to the outer side surface of the outer shell component, the inner ventilation area is located on the side close to the top cover sealing portion, and the outer heat dissipation area is located on the side away from the top cover sealing portion.

8. The voltage transformation device according to claim 2, wherein: The protective shell further includes a shell base, which is arranged at the bottom of the inner shell component, and at least one of the inner shell component and the outer shell component is fixedly connected to the shell base.

9. The voltage transformation device according to claim 8, characterized in that: The shell base includes a fixed seat body and at least one supporting beam portion, a seat inner cavity is provided in the fixed seat body portion, at least one supporting beam portion is embedded and fixed inside the seat inner cavity, and in a first direction, the supporting beam portion is located within the coverage range of the accommodating inner shell cavity, and the first direction is the positive projection direction from the side close to the shell top cover to the side close to the shell base.

10. The voltage transformation device according to claim 9, characterized in that: One of the inner shell component and the outer shell component is provided with a shell limiter, the shell limiter extends toward the first direction, the shell limiter is located outside the fixed seat body, and the shell limiter abuts against the side wall of the fixed seat body.

11. The voltage conversion device according to claim 1, 2, 3, 4, 8, 9 or 10, characterized in that: The voltage transformation component includes a transformer element and an electric control element, and the transformer element is electrically connected to the electric control element through a conductive wire.

12. An air conditioner outdoor unit, characterized in that: It comprises a casing and a transformer device according to any one of claims 1 to 11, wherein a fan chamber and an electrical chamber are provided in the casing, and the transformer device is installed and fixed in the electrical chamber.

13. An air conditioner, characterized in that: Comprising the air conditioner outdoor unit as described in claim 12.

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