Display cabinet capable of conveniently controlling start and stop through evaporation air

Abstract

The utility model relates to the technical field of display cabinets, in particular to a display cabinet convenient for evaporation wind to control start and stop, which comprises a cabinet body, an evaporation fan mounted on the upper portion of the inner side of the cabinet body, a switch support mounted on the outer side of the top of the cabinet body, and a Hall switch mounted at one end of the inside of the switch support and electrically connected with the evaporation fan through a wire. A door magnet is installed at the top of a door body of the cabinet body, and the door magnet is close to or separated from the Hall switch through rotation of the door body, so that the door magnet and the Hall switch conduct induction, and starting and stopping of the evaporation fan are controlled. According to the display cabinet capable of conveniently controlling start and stop through the evaporation air, the display cabinet serves as a carrier, the Hall switch is additionally arranged on the box body and arranged on the installation support, the door magnet vertically inducting the Hall switch is installed on the door body, and the door magnet inducts the Hall switch through rotation of the door body, so that start and stop of the draught fan are controlled; and the evaporation fan which is started and stopped is controlled by using a weak signal, so that the aim of stopping the fan when the door is opened is fulfilled.

Description

Technical Field

[0001] The utility model relates to the technical field of display cabinets, in particular to a display cabinet which is convenient for controlling the start and stop of evaporation wind. Background Art

[0002] In current display cabinet technology, as the market demand for large capacity and high cooling effect increases, the volume of display cabinets continues to increase, and the air volume of evaporator fans also increases accordingly. However, this increase brings a significant problem: noise. The noise generated by large air volume evaporator fans seriously affects the user experience, especially in commercial display occasions that require a quiet environment.

[0003] At the same time, in order to control the start and stop of the fan, the industry currently generally adopts the electronic temperature controller solution. Although this solution can achieve effective control of the fan, its cost is relatively high, which is not conducive to the wide promotion and application of the product. In addition, the traditional fan control method will generate a large current shock at the moment of power-on, which not only affects the life of the fan, but also may pose a potential threat to the entire circuit system. Utility Model Content

[0004] The purpose of the utility model is to provide a display cabinet that is convenient for controlling the start and stop of evaporative wind, so as to solve the problem that the electronic temperature controller is currently widely used in the industry as mentioned in the background technology. Although this solution can achieve effective control of the fan, its cost is relatively high, which is not conducive to the wide promotion and application of the product. In addition, the traditional fan control method will generate a large current shock at the moment of power-on, which not only affects the life of the fan, but also may pose a potential threat to the entire circuit system.

[0005] To achieve the above-mentioned purpose, the utility model provides a display cabinet which is convenient for controlling the start and stop of evaporative wind, including a cabinet body, an evaporative fan is installed on the upper inner part of the cabinet body, a switch bracket is installed on the outer top of the cabinet body, the inner side of the switch bracket is a hollow structure, a Hall switch is installed at one end of the switch bracket, the Hall switch is electrically connected to the evaporative fan through a wire, a door magnet is installed on the top of the door body of the cabinet body, the door magnet approaches or separates from the Hall switch through the rotation of the door body, and then the door magnet and the Hall switch are sensed to realize the start and stop control of the evaporative fan.

[0006] Preferably, the cabinet is a transparent box structure.

[0007] Preferably, the Hall switch has a built-in reed switch, which is disconnected in a normal state. When the Hall switch is close to a magnetic field, two contacts of the reed switch are magnetized respectively, attract each other, and become conductive.

[0008] Preferably, when the evaporator fan is in the power-on state, the operation of the evaporator fan is controlled by a switch signal, and the switch signal is directly input into the evaporator fan MCU chip. When the switch is turned on, the evaporator fan MCU outputs PWM to operate the evaporator fan; when the switch is turned off, the evaporator fan MCU does not output PWM to stop the evaporator fan.

[0009] Preferably, screw holes are provided on both sides of the switch bracket, and the switch bracket is fixed to the top of the cabinet by bolts.

[0010] Preferably, one end of the switch bracket on which the Hall switch is mounted faces the outside of the cabinet, and when the door is closed, the Hall switch and the door magnet can be close to each other.

[0011] Preferably, the wire between the Hall switch and the evaporating fan is pre-buried inside the foaming layer of the cabinet.

[0012] Preferably, the Hall switch is fixed inside the switch bracket by a buckle.

[0013] Preferably, a switch with a delay module is installed inside the evaporator fan, and when the switch of the evaporator fan is turned on, the fan starts to turn on after a delay of 30 seconds.

[0014] Preferably, the door magnet is installed on the top of the door body by bolts.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] In the display cabinet that is convenient for controlling the start and stop of the evaporation wind, the display cabinet is used as a carrier, and a Hall switch is added to the box body. The Hall switch is placed on a mounting bracket, and a door magnet that is vertically induced is installed on the door body. The door magnet senses the Hall switch through the rotation of the door body, thereby controlling the start and stop of the fan, and using a weak signal to control the start and stop of the evaporation fan, thereby achieving the purpose of stopping the fan when the door is opened. The door body rotation is used to drive the magnetic switch to open and close, thereby controlling the start and stop of the fan, reducing noise and improving user experience. The weak current signal directly participates in controlling the start and stop of the fan, reducing the instantaneous current of the fan starting, reducing the impact on the relay, reducing the failure rate of the fan, and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a side structural schematic diagram of the utility model;

[0019] Figure 3 For this utility model Figure 2 A local enlarged schematic diagram of the middle A;

[0020] Figure 4 This is a schematic diagram of the structure of the switch bracket in the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the evaporation fan in the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the door magnet in the utility model;

[0023] Figure 7 This is a schematic diagram of the principle of connecting the evaporation fan in the utility model;

[0024] Figure 8 It is a schematic diagram of the principle of disconnecting the evaporation fan in the utility model.

[0025] The meaning of each number in the figure is:

[0026] 1. Cabinet body; 11. Door body; 2. Evaporator fan; 3. Switch bracket; 31. Screw hole; 4. Hall switch; 5. Door magnet. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The utility model provides a display cabinet which is convenient for controlling the start and stop of evaporation wind. Figure 1-Figure 8 As shown, it includes a cabinet 1, an evaporator fan 2 is installed on the upper inner part of the cabinet 1, a switch bracket 3 is installed on the outer top of the cabinet 1, the inner side of the switch bracket 3 is a hollow structure, a Hall switch 4 is installed at one end of the switch bracket 3, the Hall switch 4 is electrically connected to the evaporator fan 2 through a wire, and a door magnet 5 is installed on the top of the door body 11 of the cabinet 1. The door magnet 5 approaches or separates from the Hall switch 4 through the rotation of the door body 11, so that the door magnet 5 and the Hall switch 4 are sensed to control the start and stop of the evaporator fan 2.

[0029] In this embodiment, the cabinet 1 is a transparent box structure, which is convenient for observing the items inside.

[0030] Specifically, the Hall switch 4 has a built-in reed switch, which is disconnected in a normal state. When the Hall switch 4 is close to a magnetic field, two contacts of the reed switch are magnetized respectively, attract each other, and become conductive.

[0031] Furthermore, when the evaporator fan 2 is in the power-on state, the operation of the evaporator fan 2 is controlled by a switch signal, and the switch signal is directly input into the evaporator fan MCU chip. When the switch is turned on, the evaporator fan MCU outputs PWM and the evaporator fan operates. When the switch is turned off, the evaporator fan MCU does not output PWM and the evaporator fan stops.

[0032] Furthermore, screw holes 31 are provided on both sides of the switch bracket 3 , and the switch bracket 3 is fixed to the top of the cabinet 1 by bolts to facilitate the disassembly and assembly of the switch bracket 3 .

[0033] Furthermore, one end of the switch bracket 3 on which the Hall switch 4 is mounted faces the outside of the cabinet 1 . When the door 11 is closed, the Hall switch 4 and the door magnet 5 can come close to each other, thereby connecting the circuit.

[0034] Furthermore, the wires between the Hall switch 4 and the evaporating fan 2 are pre-buried inside the foaming layer of the cabinet 1 to protect the wires and avoid damage.

[0035] Furthermore, the Hall switch 4 is fixed inside the switch bracket 3 by a buckle, so that the disassembly and assembly of the Hall switch 4 is convenient.

[0036] Furthermore, a switch with a delay module is installed inside the evaporating fan 2. When the switch of the evaporating fan 2 is turned on, the fan starts to open after a delay of 30 seconds, thereby realizing an automatic delayed switching action.

[0037] Furthermore, the door magnet 5 is installed on the top of the door body 11 by bolts, so as to be convenient to move with the door body 11 .

[0038] When the display cabinet of the utility model that is convenient for controlling the start and stop of the evaporative wind is used, first, the cabinet body 1 serves as the main structure of the entire display cabinet, providing space for storing and displaying items. The evaporative fan 2 is installed on the upper inner side of the cabinet body, responsible for generating cold air to cool the inside of the cabinet body. The Hall switch 4 has a built-in reed switch. When the magnetic field approaches, the two contacts in the reed switch will be magnetized and attracted to each other, making the circuit conductive. The door body 11 is the movable part of the cabinet body 1, used to open and close the cabinet body 1. The door magnet 5 is installed on the top of the door body 11. When the door body 11 is closed, the door magnet 5 will be close to the Hall switch 4, making the circuit conductive. When the door body 11 is closed, the door magnet 5 is close to the Hall switch 4. Due to the effect of the magnetic field, the reed switch contacts in the Hall switch 4 are magnetized and attracted to each other, and the circuit is conductive.

[0039] After the circuit is turned on, a weak current signal is sent to the evaporator fan 2. This signal is directly input into the MCU chip of the evaporator fan 2. After receiving the signal, the MCU chip outputs a PWM pulse width modulation signal to control the operation of the evaporator fan 2. At this time, the evaporator fan 2 starts working. When the door body 11 is opened, the door magnet 5 is separated from the Hall switch 4, and the circuit is disconnected. After the evaporator fan 2 receives the disconnection signal, the MCU stops outputting the PWM signal, and the evaporator fan 2 stops immediately. In addition, a switch with a delay module is installed inside the evaporator fan 2. When the switch of the evaporator fan 2 is turned on, the fan will delay for 30 seconds before starting. This design can reduce the current impact when the fan starts, extend the service life of the fan, and improve the stability of the entire system. Through the design of the above structure and working principle, the display cabinet of the utility model realizes the intelligent start and stop control of the evaporator fan, reduces noise, and improves the durability and user experience of the product.

[0040] Finally, it should be noted that the electronic components of the evaporator fan 2, Hall switch 4, etc. in this embodiment are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components are connected by wires respectively. The specific connection means should refer to the working sequence between the electrical components in the above-mentioned working principle to complete the electrical connection, which are all well-known technologies in the art.

[0041] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A display cabinet that facilitates the start and stop control of evaporative wind, comprising a cabinet body (1), characterized in that: An evaporator fan (2) is installed on the upper inner part of the cabinet (1), a switch bracket (3) is installed on the outer top of the cabinet (1), the inner side of the switch bracket (3) is a hollow structure, a Hall switch (4) is installed at one end of the switch bracket (3), the Hall switch (4) is electrically connected to the evaporator fan (2) through a wire, and a door magnet (5) is installed on the top of the door body (11) of the cabinet (1), the door magnet (5) approaches or separates from the Hall switch (4) through the rotation of the door body (11), thereby causing the door magnet (5) to sense the Hall switch (4) to control the start and stop of the evaporator fan (2).

2. The display cabinet for convenient start and stop control of evaporative wind according to claim 1, characterized in that: The cabinet (1) is a transparent box structure.

3. The display cabinet for convenient start and stop control of evaporative wind according to claim 1, characterized in that: The Hall switch (4) has a built-in reed switch, which is disconnected in a normal state. When the Hall switch (4) is close to a magnetic field, two contacts of the reed switch are magnetized respectively, attract each other, and become conductive.

4. The display cabinet for convenient start and stop control of evaporative wind according to claim 1, characterized in that: When the evaporator fan (2) is in a powered-on state, the operation of the evaporator fan (2) is controlled by a switch signal, and the switch signal is directly input into the evaporator fan MCU chip. When the switch is turned on, the evaporator fan MCU outputs PWM and the evaporator fan operates. When the switch is turned off, the evaporator fan MCU does not output PWM and the evaporator fan stops.

5. The display cabinet for convenient start and stop control of evaporative wind according to claim 1, characterized in that: Screw holes (31) are provided on both sides of the switch bracket (3), and the switch bracket (3) is fixed to the top of the cabinet (1) by means of bolts.

6. The display cabinet for convenient start and stop control of evaporative wind according to claim 1, characterized in that: One end of the switch bracket (3) on which the Hall switch (4) is mounted faces the outside of the cabinet (1); when the door (11) is closed, the Hall switch (4) and the door magnet (5) can come close to each other.

7. The display cabinet for convenient start and stop control of evaporative wind according to claim 1, characterized in that: The wire between the Hall switch (4) and the evaporating fan (2) is pre-buried inside the foaming layer of the cabinet (1).

8. The display cabinet for convenient start and stop control of evaporative wind according to claim 1, characterized in that: The Hall switch (4) is fixed inside the switch bracket (3) by means of a buckle.

9. The display cabinet for convenient start and stop control of evaporative wind according to claim 1, characterized in that: A switch with a delay module is installed inside the evaporation fan (2). When the switch of the evaporation fan (2) is turned on, the fan starts to turn on after a delay of 30 seconds.

10. The display cabinet for convenient start and stop control of evaporative wind according to claim 1, characterized in that: The door magnet (5) is mounted on the top of the door body (11) by means of bolts.

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