CN209544973U - A kind of energy-saving grid-connected cabinet cooling device - Google Patents

Abstract

The utility model discloses a kind of energy-saving grid-connected cabinet cooling devices, belong to grid-connected cabinet technical field, including cabinet body, electric panel room and cooling chamber, the hinged maintenance door in the outside of the electric panel room, the cooling chamber and the electric panel room inside setting up and down in the cabinet body, heat dissipation chamber is arranged in the lower section of the electric panel room, and the cooling chamber, separated by being equipped with the partition of ventilation opening between adjacent two Room of the electric panel room and heat dissipation chamber, thermovent is arranged in the side wall of the heat dissipation chamber, the inside installation fan and battery of the cooling chamber, air process room is arranged in the top of the cooling chamber, the inside installation blast pipe and refrigeration machine of the air process room.By the way that blast pipe is passed through refrigeration machine, the working principle of refrigeration machine will be freezed by air inside blast pipe similar to air-conditioning, cooperate fan that cold wind is blown into electric panel room, cabinet body is discharged along the thermovent of heat dissipation chamber in the hot-air of electric panel room, achievees the effect that rapid cooling.

Description

An energy-saving photovoltaic grid-connected cabinet cooling device

technical field

The utility model relates to the technical field of photovoltaic grid-connected cabinets, in particular to an energy-saving cooling device for photovoltaic grid-connected cabinets.

Background technique

The photovoltaic grid-connected cabinet is a power distribution device that connects the photovoltaic power station and the grid, and its main function is to serve as the boundary between the photovoltaic power station and the grid. For low-voltage grid-connected photovoltaic power plants, the photovoltaic grid-connected cabinet can also be used for home installation reference measurement and some protection functions. Photovoltaic grid-connected cabinets, as the total outlet of photovoltaic power plants, must exist in the photovoltaic system.

The traditional photovoltaic grid-connected cabinet still has certain defects when it is used. The internal electrical equipment of the traditional grid-connected cabinet will generate a large amount of temperature when it is working, so a heat sink is required to cool the inside of the cabinet. The traditional cooling device generally uses fans to dissipate heat. , the principle of fan heat dissipation is to exchange the outside air with the air inside the cabinet to achieve the purpose of cooling, but when the outside temperature is also high, the cooling effect is poor, and the efficiency is low, and it needs to work for a long time, and an additional power supply for the cooling device is required, which consumes a lot of energy. , not energy efficient.

Utility model content

The purpose of this utility model is to provide an energy-saving cooling device for photovoltaic grid-connected cabinets in order to solve the problems of low cooling efficiency of the above-mentioned cooling device in the grid-connected cabinet, high energy consumption that is difficult to maintain at low temperatures, and the need for an external power supply, which has more efficient cooling , not affected by the external high temperature, the advantages of energy saving and environmental protection.

The utility model achieves the above object through the following technical solutions. An energy-saving photovoltaic grid-connected cabinet cooling device includes a cabinet body, an electrical room and a cooling room, the outer hinged maintenance door of the electrical room, the cooling room and the cooling room The electrical room is set up and down inside the cabinet, and a heat dissipation room is arranged below the electrical room, and the cooling room, the electrical room and the heat dissipation room are all passed through partitions with vents between two adjacent rooms. Separated, the side wall of the heat dissipation chamber is provided with a heat dissipation port, a fan and a storage battery are installed inside the cooling chamber, an air processing chamber is arranged on the top of the cooling chamber, an air inlet pipe and a refrigerator are installed inside the air processing chamber, One end of the air inlet pipe passes through the air processing chamber to communicate with the outside world, and the other end communicates with the cooling chamber. An insulation layer is provided between the inner wall and the outer wall of the cabinet, and the interior of the insulation layer is filled with insulation cotton. .

Preferably, the refrigerator includes a condenser, a compressor and an evaporator, and the condenser and the compressor communicate with each other through a circulation pipe.

Preferably, the condenser and the compressor communicate with each other through a refrigeration pipe, and the interior of the refrigeration pipe is filled with refrigerant.

Preferably, the refrigeration pipe has a spiral structure and is wound around the outer wall of the air inlet pipe.

Preferably, one end of the air inlet pipe in contact with the outside is provided with an air inlet, and the air inlet has a horn-shaped structure.

Preferably, the charging terminal of the storage battery is connected to a current transformer through a wire, and the current transformer is installed at the current output terminal of the photovoltaic inverter.

Compared with the prior art, the beneficial effects of the utility model are:

1. By passing the air inlet pipe through the refrigerator, the working principle of the refrigerator is similar to that of an air conditioner. The inside of the air inlet pipe is cooled by air, and the fan blows the cold air into the electrical room, and the hot air in the electrical room dissipates heat along the cooling room. The outlet is discharged from the cabinet to achieve the effect of rapid cooling.

2. The inner wall and outer wall of the cabinet are double-layered, and the double-layer space is filled with thermal insulation cotton, so that when the temperature outside the cabinet is high, the high temperature cannot be transmitted to the inside of the cabinet, and the low temperature inside the cabinet can be continuously maintained. Loss, thereby reducing the number of times the cooling device is used and saving energy.

3. The whole cooling device is powered by the battery, and the charging section of the battery is connected with a current transformer. The current transformer has the function of taking power, and can take power directly from the power output terminal of the inverter without external power supply, which is more convenient to use.

Description of drawings

Fig. 1 is a structural schematic diagram of the overall device of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the cabinet of the present invention.

Fig. 3 is a schematic diagram of the internal structure of the cooling chamber of the present invention.

Fig. 4 is a schematic diagram of the internal structure of the refrigerator of the present invention.

In the figure: 1. Cabinet body, 2. Electrical room, 3. Inspection door, 4. Cooling room, 5. Cooling room, 6. Cooling port, 7. Thermal insulation cotton, 8. Fan, 9. Air processing room, 10. Battery, 11, current transformer, 12, air inlet pipe, 13, refrigerator, 14, condenser, 15, compressor, 16, evaporator, 17, circulation pipe, 18, refrigeration pipe, 19, air inlet.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figure 1-4, an energy-saving photovoltaic grid-connected cabinet cooling device, including a cabinet body 1, an electrical room 2 and a cooling room 4, the outer hinged inspection door 3 of the electrical room 2, the cooling room 4 and the electrical room 2 The top and bottom are arranged inside the cabinet body 1, and the cooling room 5 is set under the electrical room 2, and the adjacent two rooms of the cooling room 4, the electrical room 2 and the cooling room 5 are separated by partitions with vents, and the cooling room The side wall of 5 is provided with cooling outlet 6, fan 8 and accumulator 10 are installed inside cooling chamber 4, and air processing chamber 9 is arranged on the top of cooling chamber 4, and air inlet pipe 12 and refrigerator 13 are installed in the inside of air processing chamber 9, and air intake One end of the pipe 12 passes through the air processing chamber 9 to communicate with the outside world, and the other end communicates with the cooling chamber 4. An insulation layer is provided between the inner wall and the outer wall of the cabinet body 1, and the inside of the insulation layer is filled with insulation cotton 7, which can be Insulate the temperature inside and outside the cabinet 1. When the external temperature is high, it will not affect the temperature inside the cabinet 1. When the cooling device is working, the fan 8 blows against the electrical room 2, and the external air is drawn through the air inlet pipe 12. Into the electrical room 2, the air inlet pipe 12 passes through the refrigerator 13 for cooling, and the high temperature in the electrical room 2 is blown out along the heat dissipation port 6, thereby achieving the effect of cooling.

The refrigerator 13 includes a condenser 14, a compressor 15 and an evaporator 16, and the condenser 14 and the compressor 15 communicate with each other through a circulation pipe 17, and the condenser 14 and the compressor 15 communicate with each other through a refrigeration pipe 18, and refrigeration The inside of the pipe 18 is filled with refrigerant. The refrigeration pipe 18 is in a spiral structure and is wound on the outer wall of the air inlet pipe 12. The working principle of the refrigerator 13 is similar to air-conditioning refrigeration. The circulation pipe 17 realizes the refrigerant vapor in the condenser through the compressor 15 14 and the evaporator 16, the refrigerant evaporates and absorbs heat through the evaporator 16, so that the internal temperature of the refrigerator 13 becomes lower, and the steam enters the condenser 14 along the circulation pipe 17, and is condensed by the condenser 14 into a low-temperature liquid along the refrigeration cycle. The pipe 18 flows back into the evaporator 16 again, and the function of the refrigerator 13 to cool the outside air is realized along with the cycle of evaporation and condensation. The end of the air inlet pipe 12 in contact with the external connection is provided with an air inlet 19, and the air inlet 19 has a horn-shaped structure. The air inlet 19 of the horn-shaped structure has a better air intake effect. The charging terminal of the battery 10 is connected to the current transformer 11 through a wire. The current transformer 11 is installed at the current output terminal of the photovoltaic inverter. The current transformer is based on the principle of electromagnetic induction. An instrument that converts a large current on the primary side into a small current on the secondary side for measurement. The current transformer is composed of a closed iron core and a winding. Its primary side winding has few turns, and its secondary side winding has more turns. The secondary side winding is connected in series with the current output end of the inverter. When the inverter has When the current is output, the primary side winding senses a small current, and the small current flows into the battery 10 along the primary side winding to realize the battery 10 taking power. convenient.

The working principle of the utility model: when the fan 8 is turned on, the outside air is sucked into the cooling chamber 4 through the air inlet pipe 12 at the top, and the high-temperature air inside the cabinet body 1 is blown out of the cabinet body 1 along the heat dissipation port 6 at the bottom, and the air inlet pipe 12 The air is refrigerated when passing through the refrigerating machine 13, so that the temperature of the air entering the cooling chamber 4 is relatively low. As the heat dissipation port 6 continuously blows out hot air, the air inlet pipe 12 continuously absorbs low-temperature air to dissipate the heat inside the electrical chamber 2. The air is completely discharged, even if the external temperature is high, the thermal insulation cotton 7 in the shell of the cabinet body 1 can isolate high temperature and save energy consumption.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to be included in the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (6)

1. a kind of energy-saving grid-connected cabinet cooling device, including cabinet body (1), electric panel room (2) and cooling chamber (4), described electrical The hinged maintenance door in outside (3) of room (2), it is characterised in that: the cooling chamber (4) and the electric panel room (2) are setting up and down in institute The inside of cabinet body (1) is stated, heat dissipation chamber (5) are arranged in the lower section of the electric panel room (2), and the cooling chamber (4), the electric panel room (2) separated by being equipped with the partition of ventilation opening between adjacent two Room of heat dissipation chamber (5), the side wall setting of the heat dissipation chamber (5) Thermovent (6), inside installation fan (8) of the cooling chamber (4) and battery (10), the top setting of the cooling chamber (4) Air process room (9), inside installation blast pipe (12) of the air process room (9) and refrigeration machine (13), the blast pipe (12) one end passes through the air process room (9) and is in communication with the outside, and the other end is connected to the cooling chamber (4), the cabinet body (1) insulating layer is equipped between inner wall and outer wall, and heat-preservation cotton (7) are filled in the inside of insulating layer.

2. the energy-saving grid-connected cabinet cooling device of one kind according to claim 1, it is characterised in that: the refrigeration machine It (13) include condenser (14), compressor (15) and evaporator (16), and by following between condenser (14) and compressor (15) Endless tube (17) is interconnected.

3. the energy-saving grid-connected cabinet cooling device of one kind according to claim 2, it is characterised in that: the condenser (14) it is interconnected between compressor (15) by refrigerator pipes (18), the inside of refrigerator pipes (18) is equipped with refrigerant.

4. the energy-saving grid-connected cabinet cooling device of one kind according to claim 3, it is characterised in that: the refrigerator pipes (18) helically structure, and it is wrapped in the outer wall of blast pipe (12).

5. the energy-saving grid-connected cabinet cooling device of one kind according to claim 1, it is characterised in that: the blast pipe (12) air inlet (19) are set with one end of external contact, and air inlet (19) is in horn-type structure.

6. the energy-saving grid-connected cabinet cooling device of one kind according to claim 4, it is characterised in that: the battery (10) charging end connects current transformer (11) by electric wire, and the electric current that current transformer (11) is mounted on photovoltaic DC-to-AC converter is defeated Outlet.