CN211509626U - Electric appliance drying device - Google Patents

Abstract

The utility model relates to the technical field of electrical appliances, in particular to an electrical appliance drying device, which comprises: a casing, which is a sealed box, and an air inlet hole and an air outlet hole are arranged on one side of the casing; and a fan, which is arranged on the In the casing, the air in the casing is sent into the electrical cabinet through the air outlet. The electric appliance drying method of the utility model has the advantages of cost and energy consumption, does not need to use any chemical desiccant, only requires very little manual maintenance, and has extremely low energy consumption.

Description

An electrical drying device

technical field

The utility model relates to the technical field of electrical appliances, in particular to an electrical appliance drying device.

Background technique

In large factories, power plants, chemical plants and other workshops, many electrical appliances are set up in the form of electrical cabinets. There are many electrical appliances in the electrical cabinets of large factories. Due to the humid climate in the southern region, the electrical components are exposed to the moist air for a long time, which may easily cause many problems such as short circuit, open circuit, and electrical damage to the electrical appliances in the electrical cabinet, which will cause great damage to the subsequent factory work. In addition, it is not easy to troubleshoot various electrical problems in a humid environment. Therefore, there is a need in the art for an appliance drying device.

Utility model content

Aiming at the technical problems existing in the prior art, the utility model discloses an electrical appliance drying device, comprising: a casing, which is a sealed box, and an air inlet hole and an air outlet hole are arranged on one side of the casing; and a fan, which is It is arranged in the casing, and the air in the casing is sent into the electrical cabinet through the air outlet.

The apparatus as above, wherein the drying apparatus further comprises: a heater configured to heat the air inside the drying apparatus.

An apparatus as above, wherein the drying apparatus is configured to be mounted on a side wall or ceiling of the electrical cabinet.

The above-mentioned device further comprises an air supply duct and/or an air intake duct, and the air supply duct and/or the air intake duct are arranged in the electrical cabinet.

The device as described above, further comprising: a humidity sensor located in the electrical cabinet.

The above device further comprises: a first relay, which controls the start and stop of the fan; the first relay is controlled by the humidity sensor.

The apparatus as above, wherein the electrical cabinet comprises: a temperature sensor located in the electrical cabinet.

The device as described above, further comprising: a second relay, which controls the start and stop of the heater; the first relay is controlled by the humidity sensor.

The device as described above, wherein the first relay controls the on-off of the circuit of the second relay.

The device as described above, further comprising: a temperature control protector and/or an overcurrent protector.

The electric appliance drying device of the utility model has the advantages of cost and energy consumption, does not need to use any chemical desiccant, only needs very little manual maintenance, and has extremely low energy consumption.

Description of drawings

1 is a schematic structural diagram of an anti-condensation system according to an embodiment of the present invention;

2 is a schematic structural diagram of a drying device according to an embodiment of the present invention;

3 is a circuit diagram of a drying device system according to an embodiment of the present invention;

4 is a schematic structural diagram of an electrical cabinet according to an embodiment of the present invention; and

FIG. 5 is a flow chart of a working method of a drying device according to an embodiment of the present invention.

Reference number:

1- electrical cabinet; 2- drying device; 11- air outlet;

12-air inlet; 13-humidity sensor; 20-air outlet

21-housing; 22-heater; 23-fan;

24-Temperature control relay; 25-Loss of current protector; 26-Power cord;

27- Fan control relay; 28- Temperature and humidity meter; 29- Air inlet hole;

31- air supply duct; 32- air inlet duct.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments described above are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the following detailed description, reference may be made to the accompanying drawings, which are considered a part of this application to illustrate specific embodiments of the application. In the figures, like reference numerals describe substantially similar components in the different figures. The specific embodiments of the present application are described in sufficient detail below to enable those of ordinary skill with relevant knowledge and technology in the art to implement the technical solutions of the present application. It should be understood that other embodiments may also be utilized or structural, logical or electrical changes may be made to the embodiments of the present application.

The technical solution of the present utility model is further described below through a specific embodiment. Those skilled in the art should understand that the following description is only for the convenience of understanding the technical solutions of the present invention, and should not be used to limit the protection scope of the present invention.

FIG. 1 is a schematic structural diagram of an anti-condensation system according to an embodiment of the present invention. As shown in the figure, the anti-condensation system of the present invention includes an electrical cabinet 1 and a drying device 2 . The drying device 2 is arranged outside the electrical cabinet 1 . The interior space of the electrical cabinet 1 includes a plurality of electrical components. The drying device 2 is connected to the inner space of the electrical cabinet 1 through an air supply duct 31 and an air intake duct 32 .

The drying device 2 and the electrical cabinet 1 may have various positional relationships. In some embodiments, the drying device 2 and the electrical cabinet 1 may be separated from each other. The drying device 2 can be placed above the electrical cabinet 1, or can be fixed on the side or below of the electrical cabinet 1, depending on the location requirements of the actual space. The drying device 2 and the electrical cabinet 1 can be separated from each other.

In some embodiments, the drying device 2 may be directly mounted on the electrical cabinet 1 . As shown in the figure, according to an embodiment of the present invention, the edge of the drying device 2 and the electrical cabinet 1 can be connected by bonding, and other existing connection methods in the field, such as clamping, welding and other connection methods can also be used The connection with the electrical cabinet 1 at the edge of the drying device 2. The air outlet 11 of the electrical cabinet 1 is connected to the air inlet hole 29 of the drying device 2 . In some embodiments, the air outlet 11 and the air inlet hole 29 may be connected by flanges, and be double-sealed to ensure the airtightness between the electrical cabinet 1 and the drying device 2 . Similarly, the air inlet 12 of the electrical cabinet 1 and the air outlet 20 of the drying device 2 are also connected in a sealed manner. The close installation of the drying device 2 and the electrical cabinet 1 is beneficial to reduce the cost and the occupied volume. Moreover, only the air inlet and the air outlet need to be opened on the electrical cabinet 1 during installation, and the installation method is simple and convenient to be applied to the existing electrical cabinet.

In some embodiments, in order to ensure the drying effect, the anti-condensation system further includes an air supply duct 31 and an air inlet duct 32, such as a soft rubber duct, a PVC duct, and the like. Other alternative materials existing in the art can also be applied to the selection of connecting materials. The air inlet duct 32 is located inside the electrical cabinet 1 , one end is fixed at the openings of the air inlet 12 and the air outlet 20 , and the other end extends to the inside of the electrical cabinet 1 . In some embodiments, the other end of the air inlet duct 32 is located below the electrical cabinet 1 . The air supply duct 31 is also located inside the electrical cabinet 1 , one end is fixed at the openings of the air outlet 11 and the air inlet hole 29 , and the other end extends to the inside of the electrical cabinet 1 . In some embodiments, the other end of the air inlet duct 32 is located above the electrical cabinet 1 .

When the drying device 2 and the electrical cabinet 1 are tightly installed, in order to increase the air circulation area in the electrical cabinet, the air supply duct 31 can be installed at the air outlet 11 and the air inlet hole 29, while the air inlet duct 32 may not be provided with a physical duct. Only through the air inlet 12 of the electrical cabinet 1 and the air outlet 20 of the drying device 2 , the humid air in the electrical cabinet 1 can be sent back to the drying device 2 .

2 is a schematic structural diagram of a drying device according to an embodiment of the present invention. As shown in the figure, the drying device 2 includes an air outlet 20, an air inlet 29, a casing 21, a heater 22, a fan 23, a temperature control relay 24, Loss of current protector 25 , power line 26 , fan control relay 27 and temperature and humidity meter 28 .

In some embodiments, the length, width and height of the housing 21 are in the range of 15-45 cm, four protective seals are used, and the rear side pipeline is sealed with double layers, so that the drying device system body forms a sealed body. In some embodiments, the sealing protection level is not lower than the IP55 standard.

The drying device does not have to completely prevent the entry of dust, and the amount of dust entering will not cause damage to the drying device of the present invention. At the same time, the drying device can also be waterproof, and water jets aimed at the drying device of the present utility model from every direction should not cause its damage. The casing 21 can effectively prevent the harm of secondary moisture caused by the entry of external humid air into the device, and can also prolong the service life of the drying device of the present invention and improve the working efficiency of the drying device.

As shown in the figure, the temperature and humidity meter 28 is used to adjust the control range of humidity and temperature. The power cord 26 and the temperature and humidity meter 28 are connected to the temperature control relay 24, the fan control relay 27, the heater 22, the fan 23, and the current loss protector 25. Electrically connected, when the temperature exceeds the preset value, the temperature control relay 24 starts to stop the heater 22 from working. When the fan 23 fails, the fan control relay 27 is activated and the temperature control relay 24 is activated at the same time to cut off the power supply of the heater 22 and stop the heater 22 from working. The current loss protector 25 constantly monitors whether there is a circuit fault in the circuit, and if the fault current is too large, the heater 22 is stopped from working.

3 is a circuit diagram of a drying device system according to an embodiment of the present invention, as shown in the figure, wherein the circuit symbols are described as follows:

FU fuse, JDF relay (control fan and JDR circuit), JDR relay (control heater), T80 two-stage temperature protector, tθ temperature and humidity meter (adjustable temperature control point), Do1&Do2 loss-of-current protector isolation switch point, HR temperature and humidity meter (adjustable humidity control point), R/HR temperature and humidity meter (for display), FH heating device (electric heating), CT current induction coil and current loss protector, M fan.

The HR temperature and humidity meter (which can be replaced by a humidity meter) controls the JDF, thereby controlling the work of the fan. The JDF further controls the JDR through a single contact, thus ensuring that the heater can be started only when the fan is turned off. The tθ temperature and humidity meter (can be replaced by a thermometer) controls the JDR, and activates the heater FH when heating is required. T80 two-stage temperature protector, Do1&Do2 current loss protector isolation switch point and CT current induction coil and current loss protector are used to prevent leakage, and FU fuse provides overcurrent protection to ensure the stable operation of the drying device.

The utility model can adopt the AC voltage of 220V, the equipment power is 300w, the air output volume is 330m ³ /h, and the maximum noise does not exceed 60fb. The relay used is composed of two parts, a coil and a contact group, so the relay also includes two parts in the circuit diagram of the utility model: a long box represents the coil; a group of contact symbols represents the contact combination. In some embodiments, the drying device does not use any processing elements such as processors, memories, arithmetic units, etc., but only uses basic electronic elements, such as sensors, relays, etc., which can greatly reduce the cost.

4 is a schematic structural diagram of an electrical cabinet according to an embodiment of the present invention. As shown in the figure, the electrical cabinet 1 includes an air outlet 11 , an air inlet 12 and a humidity sensor 13 . The drying device 2 is connected to the electrical cabinet 1 through the air outlet 11 and the air inlet 12 . The air outlet 20 of the drying device 2 is sealed and connected to the air inlet 12 of the electrical cabinet 1; the air inlet 29 of the drying device 2 is also sealed and connected to the air outlet 11 of the electrical cabinet 1.

The drying device 2 of the present invention improves the drying efficiency and reduces the drying cost by circulating the drying air. The humidity sensor 13 is located in the electrical cabinet 1 (eg, at the air inlet 12 ), and monitors the humidity value of the incoming air in real time. When the electrical cabinet 1 is already within the preset humidity range, the drying device 2 can be in a dormant state, thereby reducing energy consumption and expenditure costs. Those skilled in the art should understand that the selection of the humidity sensor 13 may be determined according to the humidity range required to be controlled by the electrical cabinet 1, and the selection of the sensor is not a limitation of the present invention.

In some embodiments, the drying device 2 can also implement one or more of sequence protection, dehumidification protection protection, temperature control protection, and overcurrent protection.

In some embodiments, in the sequential protection mode, that is, after the fan is normally started, the drying device system can obtain an instruction to start the heater. If the heater is started first, the system temperature of the drying device will be overheated, which will cause circuit problems such as disconnection of the drying device system. So as to achieve the effect of protecting the drying device system.

Referring to Figure 3, in the sequential protection mode, the JDF relay (contact fan) needs to cooperate with the M fan; the JDR relay (contact heater) needs to cooperate with the FH heating device (electric heating) to disperse the relay contacts.

In some embodiments, in the dehumidification fault protection mode, that is, when the fan fails to open circuit, short circuit and other circuit problems, resulting in the activation of the current loss protection, the heater power supply system will be terminated and heating will be stopped. In some embodiments, the dehumidification is set to start the dehumidification fan when the relative humidity in the cabinet is greater than 80%, and stop the dehumidification fan when the relative humidity in the cabinet is lower than 50%.

Referring to Figure 3, in the dehumidification fault protection mode, the JDF relay (contact fan) needs to cooperate with the HR temperature and humidity meter (adjustable humidity control point) to centralize the relay contacts. If the humidity is within the preset control range, the HR is disconnected and the JDF is also disconnected.

In some embodiments, in the temperature control protection mode, that is, after the heater is started, the temperature needs to be within a preset temperature range, and if the temperature is higher than the preset temperature, the heating is stopped immediately. Thus, the electrical cabinet 1 is protected to prevent the electrical cabinet 1 from being burned out due to excessive temperature. In some embodiments, the heating is set to start the heater when the temperature is lower than 20°C, and stop the heating when the temperature is higher than 50°C.

Referring to Figure 3, in the temperature control protection mode, the JDR relay (contact heater) needs to cooperate with the tθ temperature and humidity meter (adjustable temperature control point) to concentrate the relay contacts. If the temperature is outside the preset control range, tθ is turned off, and JDR is also turned off.

In some embodiments, when the system failure causes the current to be too large, the overcurrent protection is activated, the heater power supply system is cut off, and the heating is stopped, so as to prevent secondary damage to the drying device system due to the overheating of the heater. FU fuse is the component of overcurrent protection.

5 is a flow chart of a method of an anti-condensation system according to an embodiment of the present invention. As shown in FIG. 5 , the anti-condensation method includes the following steps:

In step 510, receive the humidity value inside the electrical cabinet;

In step 520, in response to the humidity value exceeding a predetermined value, the fan is activated;

In step 530, measure the internal temperature value of the electrical cabinet; and

In step 540, in response to the temperature value being below a predetermined value, the heater is activated.

In some embodiments, the fan is activated when the humidity inside the electrical cabinet exceeds 80%. When the temperature inside the electrical cabinet is lower than 20 degrees Celsius, start the heater. In some embodiments, if the humidity value inside the electrical cabinet is lower than 50%, the fan is stopped to save energy consumption. In some embodiments, if the temperature inside the drying device is above 50 degrees Celsius, the heater is turned off. If the fan is stopped, the heater is also stopped.

The utility model sends dry air with qualified humidity and temperature indicators into the electrical cabinet through the drying device, so that the temperature and humidity inside the electrical cabinet are controlled within a preset range, and at the same time, the recovered air is processed again, so that the drying air can be circulated in the drying process. Internal circulation between unit and electrical cabinet.

In some embodiments of the present invention, the drying problem of the electrical cabinet can be solved by the drying device. The principle of hot air circulation is adopted. After passing through the drying device of the present invention, the air inside the sealed box is heated and dried, and then returned to the box. In order to achieve a cycle process, keep the components and other items in the box in a continuous dry state, thereby greatly increasing the service life of the box and maintenance costs.

The anti-condensation system of the utility model has the advantages of cost and energy consumption, does not need to use any chemical desiccant, only requires very little manual maintenance, and has extremely low energy consumption. When the ambient humidity is greater than 100%, for an ordinary 1.0 cubic meter electrical cabinet, the energy consumption is less than 50 kWh for a month of continuous work.

The above-mentioned embodiments are only for the purpose of illustrating the present utility model, and are not intended to limit the present utility model. Those of ordinary skill in the relevant technical field can also make various changes and modifications without departing from the scope of the present utility model. Therefore, all equivalent technical solutions should also belong to the scope of the disclosure of the present invention.

Claims (10)

1. an electrical appliance drying device, is characterized in that, comprises: an outer casing, which is a sealed box, and one side of the outer casing is provided with an air inlet hole and an air outlet hole; and a fan, which is arranged in the casing, the fan extracts the air in the electrical cabinet through the air inlet hole, and the fan sends the air in the casing into the electrical cabinet through the air outlet hole; Wherein, the air inlet hole and the air outlet hole are respectively sealed and connected with the air outlet and the air inlet of the electrical cabinet. 2. The apparatus of claim 1, wherein the drying apparatus further comprises: a heater configured to heat air inside the drying apparatus. 3. The apparatus of claim 2, wherein the drying apparatus is configured to be mounted on a side wall or a ceiling of the electrical cabinet. 4 . The device according to claim 3 , further comprising an air supply duct and/or an air inlet duct, and the air supply duct and/or the air inlet duct are arranged in the electrical cabinet. 5 . 5. The apparatus of claim 4, further comprising: a humidity sensor located in the electrical cabinet. 6 . The device according to claim 5 , further comprising: a first relay, which controls the start and stop of the fan; the first relay is controlled by the humidity sensor. 7 . 7. The apparatus of claim 6, wherein the electrical cabinet comprises: a temperature sensor located in the electrical cabinet. 8 . The device according to claim 7 , further comprising: a second relay, which controls the start and stop of the heater; the first relay is controlled by the humidity sensor. 9 . 9 . The device of claim 8 , wherein the first relay controls the on-off of the circuit of the second relay. 10 . 10. The device according to claim 1, further comprising: a temperature control protector and/or an overcurrent protector.

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