CN213548105U

CN213548105U - Heat exchange structure of outdoor equipment

Info

Publication number: CN213548105U
Application number: CN202022180955.3U
Authority: CN
Inventors: 胡雷雷; 陈伟; 张融森; 周俊杰; 张燕
Original assignee: TBEA Xinjiang Sunoasis Co Ltd; TBEA Xian Electric Technology Co Ltd
Current assignee: TBEA Xinjiang Sunoasis Co Ltd; TBEA Xian Electric Technology Co Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-06-25
Anticipated expiration: 2030-09-28

Abstract

The utility model discloses an outdoor equipment's heat transfer structure, heat exchanger include casing, cooling fan and heat pipe, and the heat pipe lower part is arranged in the casing, and cooling fan installs in heat pipe one end, and is arranged in the casing, the casing air intake has been seted up to the other end of casing. The utility model provides a heat exchanger separates the heat pipe for upper and lower two parts, upper portion and external intercommunication, be used for the heat dissipation, the lower part is passed through casing air intake transmission heat, the heat gets into the heat pipe lower part in the casing from the casing vent, flow through the heat pipe lower part, when preventing that cold air from getting into heat exchanger, also bring the dust into its outdoor equipment that will cool off, make inside all the other devices of dc-to-ac converter keep apart completely with the external environment and reach dirt-proof purpose, also satisfy the heat dissipation demand of the inside all the other devices of dc-to-ac converter simultaneously.

Description

Heat exchange structure of outdoor equipment

Technical Field

The utility model belongs to the technical field of outdoor dc-to-ac converter heat transfer, concretely relates to outdoor equipment's heat transfer structure.

Background

With the continuous reduction of the price of the centralized inverter, the container type inverter scheme is slowly eliminated by the market due to the higher cost price. In order to improve profit margin of the centralized inverter, all inverter manufacturers have introduced outdoor dedicated photovoltaic inverters, and the centralized outdoor photovoltaic inverter slowly occupies the leading position of the market due to the advantages of small floor space, high power density, low cost, convenient transportation and installation, and the like, and each manufacturer has introduced a corresponding centralized outdoor photovoltaic inverter by taking the currently mainstream centralized 3.125MW inverter of the market as an example.

Since the outdoor inverter is directly placed in the external environment to work, the internal components are sensitive to dust. At present, forced air cooling heat dissipation is basically adopted by photovoltaic inverters on the market, but dust prevention and heat dissipation are contradictory, namely, on the premise of meeting the dust prevention requirement, the inverters cannot dissipate heat, and on the contrary, on the premise of meeting the heat dissipation requirement of the inverters, dust can enter the inverters. Therefore, in the design of the outdoor inverter, the main air duct (including a power module radiator, a reactor and the like) is isolated by adopting a structural component, and the centrifugal fan directly blows to radiate heat, so that dust has little influence on the power module radiator and the reactor. The dust has great influence on the safety and performance of other parts in the inverter, such as copper bars, contactors, circuit breakers, fusing and the like. At present, the heat dissipation inside the outdoor inverter mainly has the following two modes.

(1) Discharging the heat of the rest parts of devices in the inverter to the outside of the inverter in a fan direct blowing mode; although the mode can meet the requirement of heat dissipation of other parts of devices in the inverter, the heat dissipation fan can bring dust into the inverter at the same time, so that the operation of the inverter is influenced, and the scheme is not recommended to be adopted for the outdoor inverter.

(2) The heat exchanger is additionally arranged in the cabinet, heat generated by other parts of devices in the cabinet is discharged to the outside of the inverter in a heat exchange mode, the heat dissipation and dust prevention requirements can be met in the mode, in the heat exchanger sold on the market, the protection level of the heat exchange fan is only IP4X, the protection level of IP6X required by the outdoor inverter cannot be reached, and therefore the heat exchange fan can be damaged.

The heat exchanger has internal circulation and external circulation, the internal circulation and the external circulation are provided with fans, the internal circulation is arranged in the cabinet, and the external circulation is arranged in the external environment.

Disclosure of Invention

The utility model provides an outdoor equipment's heat transfer structure satisfies the heat transfer demand when satisfying the dustproof and heat dissipation requirement of the inside all the other parts devices of outdoor inverter.

In order to achieve the purpose, the utility model relates to a heat exchange structure of outdoor equipment, a transverse clapboard and a main air channel are arranged in a cabinet body of the outdoor equipment, vertical clapboards are arranged on two sides of the lower end of the transverse clapboard, the cabinet body is divided into an upper cavity and a lower cavity by the transverse clapboard, the vertical clapboards are respectively fixed on two sides of the lower end of the transverse clapboard in the cabinet body, a heat exchanger is arranged on the transverse clapboard, the heat exchanger is positioned on one side of the main air channel and comprises a shell and a heat pipe, the heat pipe is divided into an upper part and a lower part by a structural part, the upper part is positioned in; the side wall of the upper cavity is provided with a main air duct outer air inlet, the upper part of the vertical partition board is provided with a first heat dissipation mesh, the lower part of the vertical partition board is provided with a second heat dissipation mesh, and the first heat dissipation mesh is communicated with a shell air inlet formed in the shell.

Furthermore, a heat radiation fan is arranged at one end of the heat pipe opposite to the air inlet of the shell, and the heat radiation fan is communicated with the air flow at the lower part of the heat pipe.

Furthermore, end plates are fixed at both ends of the upper part of the heat pipe.

Further, the cooling fan is installed in the housing through the mounting bracket.

Further, the mounting bracket is fixed in the housing by a fastener.

Further, the heat pipe is vertically arranged.

Furthermore, a sealing strip is arranged at the joint of the heat exchanger and the diaphragm plate.

Compared with the prior art, the utility model discloses following profitable technological effect has at least:

the heat exchanger is arranged on one side of an air inlet in the main air duct, the other side of the heat exchanger is positioned in an area outside the main air duct inside the inverter, a device placed inside the inverter adopts a self heat dissipation fan to realize internal circulation, heat is transferred to the lower part of the heat pipe, the heat pipe is transferred to the upper part of the heat pipe through the heat conduction effect, the upper part of the heat pipe is placed on one side of the main air duct, and the fan in the main air duct is utilized to realize external circulation, so that the fan in the cabinet is utilized to the maximum extent, the cost of the whole machine is reduced, and.

The heat pipe is divided into an upper part and a lower part, the upper part is communicated with the outside for heat dissipation, the lower part transfers heat through the air inlet of the shell, the heat enters the lower part of the heat pipe in the shell from the ventilation opening of the shell and flows out from the upper part of the heat pipe, and when cold air is prevented from entering the heat exchanger, dust is also brought into outdoor equipment to be cooled, so that other devices in the inverter are completely isolated from the external environment to achieve the dustproof purpose, meanwhile, the heat dissipation requirements of other devices in the inverter are met, and the protection grade of the outdoor inverter can reach IP 6X. And the normal operation of outdoor equipment is ensured.

The heat exchanger is arranged in the upper cavity of the inverter, the upper part and the lower part of the heat pipe are separated by the structural part, and only the upper part of the heat pipe is directly contacted with the outside air, so that the influence of the external environment on the heat exchange fan in the heat exchanger is avoided, the performance is reliable, and the protective performance is good.

Furthermore, the heat dissipation fan is installed in the shell through the installation frame, and installation and disassembly are facilitated.

Furthermore, the pipes of the heat pipes are vertically arranged, the main air duct fan is used for external circulation, the air quantity of the main air duct fan is large, and the heat dissipation efficiency is high.

Furthermore, a sealing strip is arranged at the joint of the heat exchanger and the diaphragm plate, so that dust is prevented from entering the power device in the lower cavity.

Furthermore, end plates are fixed at two ends of the upper part of the heat pipe, and the end plates play a role in backflow, so that the heat dissipation efficiency is improved.

Drawings

FIG. 1 is an overall layout of the present invention;

FIG. 2 is a schematic view of the heat exchange mode of the heat exchanger of the present invention;

FIG. 3 is a view of the heat exchanger according to the present invention;

FIG. 4 is a schematic view of a heat pipe of the heat exchanger of the present invention;

FIG. 5 is a schematic view of a heat exchanger housing according to the present invention;

fig. 6 is a diagram of the heat dissipation fan of the heat exchanger of the present invention.

In the drawings: 1. go up the cavity, 2, lower cavity, 3, cross slab, 4, heat exchanger, 41, casing, 411, casing air intake, 412, installing frame, 42, heat pipe, 43, radiator fan, 44, structure, 45, mounting bracket, 46, end plate, 51, first direct current cavity, 52, second direct current cavity, 6, exchange cavity, 7, second heat dissipation mesh, 8, the outer air intake of main air duct, 10, first perpendicular baffle, 11, the perpendicular baffle of second.

The arrows in fig. 2 are the heat flow directions.

Detailed Description

In order to make the purpose and technical scheme of the utility model clearer and more convenient to understand. The present invention will be described in further detail with reference to the following drawings and examples, wherein the specific examples are provided for the purpose of illustration only and are not intended to be limiting.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the utility model provides a simple structure, the dependable performance, the protectiveness is good, outdoor equipment's heat transfer structure that the radiating efficiency is high, outdoor dc-to-ac converter is divided into cavity 1 and cavity 2 two parts down by cross slab 3, go up the outer air intake 8 in main wind channel (containing power module radiator, reactor etc.) has all been seted up to four lateral walls of cavity, cavity 2 mainly contains first direct current cavity 51 down, second direct current cavity 52 and interchange cavity 6, first direct current cavity 51 and interchange cavity 6 are separated through first perpendicular baffle 10, second direct current cavity 52 and interchange cavity 6 are separated through second perpendicular baffle 11.

The first direct current cavity 51 and the second direct current cavity 52 are respectively arranged at two sides of the cabinet, and the alternating current cavity 6 is arranged in the middle of the cabinet; heating devices such as a load switch, a fuse and a copper bar are arranged in the first direct current cavity and the second direct current cavity, the load switch is connected with the fuse through the copper bar, and a first heat dissipation mesh communicated with the heat exchanger is arranged on the upper portion of the first vertical partition plate 10. A contactor, a circuit breaker, a copper bar and other heating devices are arranged in the alternating current cavity 6, and the contactor is connected with the circuit breaker through the copper bar; the first direct current cavity, the second direct current cavity and the alternating current cavity on the two sides of the outdoor inverter are communicated through a first vertical partition plate and a second heat dissipation mesh 7 on the lower portion of the second vertical partition plate.

Referring to fig. 2, the heat exchanger is installed on a diaphragm 3 between an upper chamber 1 and a lower chamber 2 of the outdoor inverter; the heat exchanger comprises a shell 41, a heat radiation fan 43 and a heat pipe 42, a mounting opening is formed in the diaphragm plate 3, the shell of the heat exchanger is mounted on the diaphragm plate 3, the upper end of the heat exchanger extends into the upper cavity, the lower end of the heat exchanger extends into the lower cavity, one end of the lower portion of the heat exchanger is connected with the heat radiation fan 43, and the other end of the lower portion of the heat exchanger is connected with the first heat radiation mesh through the first heat radiation mesh. When the inverter operates, the heat exchanger realizes internal circulation through the heat dissipation fan 43 and the first heat dissipation mesh holes, heat generated by devices on the direct current side and the alternating current side is transferred to the lower part of the heat pipe 42, the heat is transferred to the upper part through the lower part of the heat pipe, and cold air entering the main air duct flows through the upper part of the heat pipe to take away the heat, so that the purpose of heat dissipation is achieved. The part of the heat exchanger extending into the upper cavity realizes external circulation through the fan of the main air duct, thereby realizing the purpose of heat dissipation of heating devices in the direct current cavity and the alternating current cavity of the outdoor inverter.

Referring to fig. 3, the heat exchanger includes a housing 41, a heat dissipation fan 43, and heat pipes 42, wherein a mounting bracket 45 is fixed in an upper housing of the housing 41 and a lower housing portion right below the upper housing, the heat dissipation fan 43 is installed in the mounting bracket 45, the heat pipes 42 are vertically arranged, and lower portions of the heat pipes are located in the lower housing; the heat pipes 42 are arranged in an array. The upper end of the lower shell extends outwards to form a circle of mounting frame 412, and sealing strips are arranged on the mounting frame, so that dust is effectively prevented from entering the inverter through the heat exchanger. End plates 46 are fixed outside two opposite side surfaces of the four side surfaces of the upper part of the heat pipe, and the other two side surfaces are not provided with end plates; the entire heat pipe is divided into an upper heat pipe and a lower heat pipe by the structural member 44. The structural member 44 is a plate having a plurality of holes for passing through the heat pipes, one end of the lower portion of the heat pipe in the housing is connected to the heat dissipation fan, the other end is connected to the first heat dissipation mesh through the housing air inlet 411, and the upper portion of the heat pipe is connected to the upper chamber of the outdoor inverter. The heat pipe and the heat dissipation fan of the heat exchanger are fixed in the heat exchange shell by screws, and the whole heat exchanger is fixed on the outdoor inverter shell by screws.

Referring to fig. 4, the heat pipe is separated into an upper part and a lower part through a structural member, and is integrally installed on the heat exchanger shell, the upper part of the heat pipe is communicated with the upper cavity of the outdoor inverter, the lower part of the heat pipe is communicated with the lower cavity of the cabinet, one end of the lower part of the heat pipe is connected with a heat dissipation fan of the heat exchanger, and the other end of the lower part of the heat pipe is connected with.

Referring to fig. 5, the housing includes an upper housing and a lower housing, the upper housing is fixed right above the lower housing, the length of the upper housing is smaller than that of the lower housing, and a side wall of the upper housing on a side close to the heat pipe is an inclined surface. The lower casing and the opposite side wall of the cooling fan are provided with a casing air inlet 411.

Referring to fig. 6, the heat exchanger cooling fan is fixed in the mounting bracket 45 using screws.

The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.

Claims

1. The heat exchange structure of the outdoor equipment is characterized in that a transverse clapboard (3) and a main air channel are arranged in a cabinet body of the outdoor equipment, vertical clapboards are arranged on two sides of the lower end of the transverse clapboard (3), the cabinet body is divided into an upper cavity (1) and a lower cavity (2) by the transverse clapboard (3), the vertical clapboards are respectively fixed on two sides of the lower end of the transverse clapboard (3) in the cabinet body, a heat exchanger (4) is installed on the transverse clapboard (3), the heat exchanger (4) is located on one side of the main air channel, the heat exchanger (4) comprises a shell (41) and a heat pipe (42), the heat pipe (42) is divided into an upper part and a lower part by a structural part (44), the upper part is located in the upper cavity (1), and the lower part is located in the; the side wall of the upper cavity (1) is provided with a main air duct outer air inlet (8), the upper part of the vertical partition board is provided with a first heat dissipation mesh, the lower part of the vertical partition board is provided with a second heat dissipation mesh (7), and the first heat dissipation mesh is communicated with a shell air inlet (411) formed in the shell (41).

2. The heat exchange structure of outdoor equipment according to claim 1, wherein the heat pipe (42) and the end opposite to the air inlet (411) of the casing are provided with a heat dissipation fan (43), and the heat dissipation fan (43) is in air flow communication with the lower part of the heat pipe (42).

3. A heat exchange structure of an outdoor device according to claim 1, wherein end plates (46) are fixed to both ends of the upper portion of the heat pipe (42).

4. A heat exchanging structure of an outdoor unit according to claim 2, wherein the heat radiating fan (43) is installed in the casing (41) through a mounting bracket (45).

5. A heat exchange structure for outdoor equipment according to claim 4, characterized in that the mounting bracket (45) is fixed in the casing (41) by means of fasteners.

6. A heat exchange structure for outdoor equipment according to claim 1, characterized in that the heat pipe (42) is vertically arranged.

7. A heat exchange structure of outdoor equipment according to claim 1, characterized in that the joint of the heat exchanger (4) and the diaphragm (3) is provided with a sealing strip.