Control device of air curtain machine and air curtain system

Abstract

The utility model provides a control device of an air curtain machine and an air curtain system. The control device comprises a first sub-circuit, a second sub-circuit and a switch assembly. The second sub-circuit is electrically connected with the first sub-circuit and the switch assembly. The switch assembly is connected between the air curtain machine and the power supply. The first sub-circuit collects door opening and closing signals, and the second sub-circuit controls opening or closing of the switch assembly according to the door opening and closing signals collected by the first sub-circuit, so that on one hand, the air curtain machine can be controlled to discharge air normally, block outside mosquitoes and control different temperatures when it is detected that a person opens a door, and on the other hand, the air curtain machine can be controlled to discharge air normally when it is detected that no person enters and exits. The air curtain machine can be controlled to stop running in a standby mode, energy can be effectively saved, and waste is reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of electrical control technology, and in particular to a control device for an air curtain machine and an air curtain system. Background Art

[0002] As summer approaches, the temperature gradually becomes hotter and the number of flying insects in the environment will increase. In order to cope with this situation, some indoor spaces, such as factory workshops and shopping malls, will install air curtains at the entrances and exits. The airflow formed by the air curtains forms a barrier between the inside and outside of the space, and opening the air curtains for a long time will inevitably cause energy waste. Summary of the invention

[0003] In order to solve the problem in the prior art that opening the air curtain for a long time will cause energy waste, the present invention provides a control device for an air curtain machine and an air curtain system.

[0004] In a first aspect, an embodiment of the present disclosure provides a control device for an air curtain machine, the control device comprising: a first subcircuit, a second subcircuit and a switch assembly;

[0005] The second subcircuit is electrically connected to the first subcircuit and the switch assembly respectively, and the switch assembly is connected between the air curtain machine and the power supply;

[0006] The first sub-circuit collects a switch gate signal, and the second sub-circuit controls the opening or closing of the switch component according to the switch gate signal collected by the first sub-circuit.

[0007] In an optional embodiment, the first subcircuit is formed by connecting the photoelectric switch and the coil of the intermediate relay in series, the second subcircuit is formed by connecting the first contact of the intermediate relay and the coil of the contactor in series, and the first subcircuit and the second subcircuit are connected in parallel with each other;

[0008] The switch assembly includes: a second contact of the contactor.

[0009] In an optional embodiment, the first contact and the second contact are normally open contacts.

[0010] In an optional embodiment, the photoelectric switch includes a receiving end and a transmitting end, and the receiving end and the transmitting end are arranged in the direction of opening the door and are respectively arranged at two ends of the door.

[0011] In an optional embodiment, the control device further includes: a third subcircuit, the third subcircuit being formed by connecting the third contact of the intermediate relay and the coil of the time relay in series;

[0012] In the second sub-circuit, a fourth contact of a time relay is connected in series between the first contact of the intermediate relay and the coil of the contactor, and the first contact of the intermediate relay is also connected in parallel with the fifth contact of the contactor.

[0013] In an optional embodiment, the third contact and the fourth contact are normally closed contacts, and the fifth contact is a normally open contact.

[0014] In an optional embodiment, the time relay controls the fourth contact to be disconnected after a preset time period after being powered on.

[0015] In a second aspect, the present disclosure provides an air curtain system, the air curtain system comprising: an air curtain machine and a control device for the air curtain machine according to the first aspect;

[0016] The air curtain machine is installed above the door, the air outlet of the air curtain machine faces the direction of the door, and the air curtain machine is electrically connected to the control device of the air curtain machine.

[0017] In an optional embodiment, the air curtain system further comprises a first switch, the first switch being arranged between the control device of the air curtain machine and the power supply;

[0018] And / or, the air curtain system further includes a second switch, and the second switch is arranged between the air curtain machine and the power supply.

[0019] In an optional embodiment, the air curtain system further includes a temperature sensor and a controller;

[0020] The controller is electrically connected to the temperature sensor and the air curtain machine respectively, and the controller controls the air volume of the air curtain machine according to the temperature information collected by the temperature sensor.

[0021] The device, electronic device and storage medium provided by the embodiments of the present disclosure have the following technical effects:

[0022] The door opening and closing signals are collected through the first sub-circuit, and the operation and stop of the air curtain machine are controlled through the cooperation between the second sub-circuit and the switch component. On the one hand, when it is detected that someone opens the door, the air curtain machine can be controlled to output air normally to block external mosquitoes and control different temperatures. On the other hand, when it is detected that no one enters or exits, the air curtain machine is controlled to standby and stop running, which can effectively save energy and reduce waste.

[0023] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions and advantages of the embodiments of the present disclosure or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1is a structural schematic diagram of a control device for an air curtain machine provided by an exemplary embodiment of the present disclosure;

[0026] Figure 2 is a schematic diagram of a first circuit connection relationship of a control device of an air curtain machine provided by an exemplary embodiment of the present disclosure;

[0027] Figure 3 is a schematic diagram of a second circuit connection relationship of a control device for an air curtain machine provided by an exemplary embodiment of the present disclosure;

[0028] Figure 4 It is a structural schematic diagram of an air curtain system provided by an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0031] An exemplary embodiment of the present disclosure provides a control device for an air curtain machine, see Figure 1 The control device comprises: a first sub-circuit 10, a second sub-circuit 20 and a switch component 30,

[0032] The second subcircuit 20 is electrically connected to the first subcircuit 10 and the switch assembly 30, respectively, and the switch assembly 30 is connected between the air curtain machine 40 and the power supply 50. The first subcircuit 10 collects the switch gate signal, and the second subcircuit 20 controls the opening or closing of the switch assembly 30 according to the switch gate signal collected by the first subcircuit 10.

[0033] The first sub-circuit 10 can collect the switch gate signal through a sensor, or can be linked with the door to collect the switch gate signal by turning the circuit on and off. This embodiment does not specifically limit the circuit form of the first sub-circuit 10. The above is only an example and can be selected according to actual conditions.

[0034] The second sub-circuit 20 is similar, and it can be implemented by a general switching circuit, or by a circuit connected to a controller (such as a central processing unit, a microprocessor, etc.), or by a logic circuit connected to a transistor, etc. This embodiment does not specifically limit the circuit form of the second sub-circuit 20. The above is only used as an example and can be selected according to actual conditions.

[0035] The air curtain 40 is generally arranged above the door, and a high-speed motor drives a strong airflow generated by a crossflow or centrifugal wind wheel to form an "invisible door curtain" air purification device, which divides the indoor and outdoor into two independent temperature zones to create a comfortable indoor environment, maintain the effect of indoor air conditioning and purifying indoor air, save electricity, and circulate the air, which can effectively isolate dust, smoke, odor, insects and microorganisms. Preventing the outflow of cold (warm) air can save electricity and effectively prevent the leakage of cold (warm) air, divide the indoor and outdoor into two independent temperature zones, and when the air conditioner is running for a long time, the auxiliary circulation adjusts the temperature to achieve the purpose of saving energy and improving the environment, and the effect of dust and insect prevention.

[0036] The on / off control between the air curtain machine 40 and the power supply 50 is achieved by controlling the switch assembly 30. For example, when someone opens the door, the first sub-circuit 10 collects the door opening and closing signal indicating the door opening, and the second sub-circuit 30 controls the switch assembly to close according to the door opening and closing signal. At this time, the air curtain machine 40 and the power supply 50 are connected, and the air curtain starts to run. On the contrary, when the door is closed, the first sub-circuit 10 collects the door opening and closing signal indicating the door closing, and the second sub-circuit 30 controls the switch assembly to disconnect according to the door opening and closing signal. At this time, the air curtain machine 40 and the power supply 50 are closed, and the air curtain stops running.

[0037] In this way, the door opening and closing signals are collected by the first sub-circuit 10, and the operation and stop of the air curtain machine 40 are controlled by the cooperation between the second sub-circuit 20 and the switch component 30. On the one hand, when it is detected that someone opens the door, the air curtain machine 40 can be controlled to discharge air normally to block external mosquitoes and control different temperatures. On the other hand, when it is detected that no one enters or exits, the air curtain machine 40 is controlled to standby and stop running, which can effectively save energy and reduce waste.

[0038] In addition, the air curtain machine 40 and the control device of the air curtain machine 40 in this embodiment can be applied to factories, shopping malls, office buildings and other places, preferably to factory workshops, so as to reduce the interference of mosquitoes in the factory workshops and improve the safety of factory operations. For the door installed with the air curtain machine 40, it is generally set to a normally closed state. When the first switch circuit 10 collects the door opening and closing signal representing the door closing, that is, only when someone enters or exits, will the door opening and closing signal representing the door opening be generated to control the operation of the air curtain machine 40.

[0039] A specific implementation is provided below to further illustrate the circuit structure of the control device of the air curtain machine. Figure 2 The circuit state shown is when the door opening and closing signal is collected to indicate that the door is closed (the circuit state when the door is open is the opposite), see Figure 2 :

[0040] The first sub-circuit 10 is formed by connecting the photoelectric switch S1 and the coil KA of the intermediate relay in series.

[0041] The second subcircuit is formed by the first contact KA1 of the intermediate relay and the coil KM of the contactor in series, and the switch assembly includes: the second contact KM1 of the contactor. As can be seen from the figure, the first subcircuit 10 and the second subcircuit 20 are connected in parallel.

[0042] It should be noted that the power supply 50 is electrically connected to the air curtain 40 via the live wire 51 and the neutral wire 52. The second contact KM1 is the main control switch of the air curtain 40, which is set on the live wire 51 and the neutral wire 52. It is not particularly limited here and can be selected according to actual conditions.

[0043] Among them, photoelectric switch S1 is the abbreviation of photoelectric proximity switch, which uses the blocking or reflection of the light beam by the detected object to connect the circuit by the synchronous circuit, thereby detecting the presence or absence of the object. Objects are not limited to metals, and all objects that can reflect light (or block light) can be detected; intermediate relays are usually used to transmit signals and control multiple circuits at the same time, and can also be used to directly control small-capacity motors or other electrical actuators; contactors are widely used switching electrical appliances, using electromagnetic, pneumatic or hydraulic principles to realize the on and off of the main circuit through the control circuit.

[0044] When the intermediate relay and contactor are powered on, the coil current will generate a magnetic field. The generated magnetic field causes the static iron core to generate electromagnetic attraction to attract the moving iron core and drive the corresponding contacts to move. Under normal circumstances, the normally closed contact corresponding to the coil is disconnected and the normally open contact is closed. The first contact KA1 and the second contact KM1 are normally open contacts. The normally open contact will only be closed when the coil of the corresponding relay is powered on. Otherwise, the corresponding normally open contact will always be in the disconnected state, and the normally closed contact is the opposite.

[0045] Therefore, when the photoelectric switch S1 detects the door opening signal indicating that the door is open, the photoelectric switch S1 is closed, the coil KA of the intermediate relay is energized, driving the first contact KA1 of the intermediate relay to close. After the first contact KA1 is closed, the coil KM of the contactor is energized, driving the second contact KM1 of the contactor to close. At this time, the air curtain machine 40 starts to power on and run.

[0046] When the photoelectric switch S1 detects that the door opening and closing signal represents closing the door, the photoelectric switch S1 is disconnected, the coil KA of the intermediate relay is de-energized, and the first contact KA1 of the intermediate relay is disconnected. After the first contact KA1 is disconnected, the coil KM of the contactor is de-energized, and the second contact KM1 of the contactor is disconnected. At this time, the air curtain machine 40 starts to stop running.

[0047] In this way, the air curtain machine 40 is controlled to be powered on when the door is opened to generate airflow and isolate external high-temperature (low-temperature) airflow or mosquitoes; the air curtain machine is controlled to stop running when the door is closed, saving resources and reducing waste.

[0048] In addition, the photoelectric switch S1 includes a receiving end and a transmitting end, which are arranged in the direction of the door opening and at both ends of the door. The photoelectric switch S1 converts the input current into a light signal at the transmitting end and then detects the target object according to the intensity or presence of the received light. When the door is detected to be open, the photoelectric switch S1 is closed; when the door is detected to be closed, the photoelectric switch S1 is opened.

[0049] Another specific implementation is provided below to further illustrate the circuit structure of the control device of the air curtain machine. This implementation can be implemented on the basis of the above implementation, wherein the functions and principles of the same components can refer to each other and will not be repeated here. Figure 3 The circuit state shown is when the door opening and closing signal is collected to indicate that the door is closed (the circuit state when the door is open is the opposite), see Figure 3 :

[0050] In some usage scenarios, people may frequently enter and exit. After the door is closed, if the air curtain machine 40 is immediately controlled to stop running, and someone happens to enter and exit at this time, the various components of the control device, such as the coil, may not have time to respond, causing the air curtain machine 40 to remain in a stopped state when the door is open, causing mosquitoes to fly in, or high temperature (low temperature) air from the outside to enter.

[0051] On this basis, the control device also includes: a third subcircuit, which is mainly used to control the air curtain machine 40 to delay for a preset period of time before closing when the door opening and closing signal is collected to indicate that the door is closed.

[0052] The third sub-circuit is formed by connecting the third contact KA2 of the intermediate relay and the coil KT of the time relay in series. Meanwhile, based on the above implementation, the second sub-circuit is further connected in series with the fourth contact KT1 of the time relay between the first contact KA1 of the intermediate relay and the coil KM of the contactor, and the first contact of the intermediate relay is also connected in parallel with the fifth contact KM2 of the contactor.

[0053] Among them, after the time relay KT is powered on, it takes a preset time for the jump change to occur, the normally closed contact is disconnected, and the normally open contact is closed. The preset time can be selected according to the actual situation, and is preferably 20 seconds in this embodiment. The fourth contact KT1 is set to a normally closed contact, so that the fourth contact KT1 will only be disconnected after the coil KT of the time relay is powered on for a preset time.

[0054] At the same time, the third contact KA2 is a normally closed contact, and the fifth contact KM2 is a normally open contact.

[0055] Therefore, when the photoelectric switch S1 detects that the door opening signal indicates that the door is open, the photoelectric switch S1 is closed, the coil KA of the intermediate relay is powered on, driving the first contact KA1 of the intermediate relay to close, and the third contact KA2 to disconnect. Since the coil KT of the time relay is not powered on, the fourth contact KT1 of the time relay is a normally closed contact, and the coil KM of the contactor is powered on, driving the second contact KM1 and the fifth contact KM2 of the contactor to close, and the air curtain machine 40 starts to power on and run. In addition, the fifth contact KM2 of the contactor is closed and self-locked after the coil KM of the contactor is powered on, and the fifth contact KM2 will only disconnect when the contactor is powered off.

[0056] When the photoelectric switch S1 detects that the door opening and closing signal represents closing the door, the photoelectric switch S1 is disconnected, the coil KA of the intermediate relay is de-energized, the first contact KA1 of the intermediate relay is disconnected, the third contact KA2 is closed, the coil KT of the time relay is energized, the fourth contact KT1 of the time relay is disconnected after a preset period of time, the coil KM of the contactor is de-energized, the second contact KM1 and the fifth contact KM2 of the contactor are disconnected, and the air curtain machine 40 starts to stop running.

[0057] In this embodiment, the third sub-circuit including the time relay is used to control the air curtain machine to continue to work for a preset time after the door is closed, thereby effectively avoiding a series of problems caused by the sudden cessation of operation of the air curtain machine 40, ensuring the ambient temperature and environmental hygiene of the installation site, and improving the user experience.

[0058] An exemplary embodiment of the present disclosure further provides an air curtain system, the air curtain system comprising: an air curtain machine 40 and a control device for the air curtain machine according to the first aspect. Figure 4The air curtain machine 40 is installed above the door 60, the air outlet of the air curtain machine faces the direction of the door 60, and the air curtain machine 40 is electrically connected to the control device of the air curtain machine.

[0059] In one embodiment, Figure 2 and Figure 3 As shown, the air curtain system further includes a first switch S2, which is arranged between the control device of the air curtain machine and the power supply 50. The power supply 50 is electrically connected to the control device of the air curtain machine through a live wire 51 and a neutral wire 52. The first switch S2 is the main control switch of the control device of the air curtain machine, and is generally arranged on the live wire 51 of the loop where the control device of the air curtain machine is located.

[0060] In one embodiment, Figure 2 and Figure 3 As shown, the air curtain system further includes a second switch S3, which is arranged between the air curtain machine 40 and the power supply. The power supply 50 is electrically connected to the air curtain machine 40 through the live wire 51 and the neutral wire 52. The second switch S3 is the main control switch of the main circuit of the air curtain system, which is arranged on the live wire 51 and the neutral wire 52.

[0061] In one embodiment, the air curtain system further includes a temperature sensor and a controller. The controller is electrically connected to the temperature sensor and the air curtain machine 40 respectively. The controller controls the air volume of the air curtain machine according to the temperature information collected by the temperature sensor.

[0062] Specifically, when the ambient temperature is high, the air volume of the air curtain is controlled to increase, and when the ambient temperature is low, the air volume of the air curtain is controlled to decrease. This can achieve intelligent and automatic control according to the environment and improve user experience.

[0063] It should be noted that the above-mentioned sequence of the embodiments of the present disclosure is for description only and does not represent the advantages and disadvantages of the embodiments. The above-mentioned specific embodiments of this specification are described. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0064] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0065] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. A control device for an air curtain machine, characterized in that: The control device comprises: a first subcircuit, a second subcircuit and a switch component; The second subcircuit is electrically connected to the first subcircuit and the switch assembly respectively, and the switch assembly is connected between the air curtain machine and a power source; The first sub-circuit collects a switch gate signal, and the second sub-circuit controls the opening or closing of the switch component according to the switch gate signal collected by the first sub-circuit.

2. The control device according to claim 1, characterized in that The first sub-circuit is formed by connecting the photoelectric switch and the coil of the intermediate relay in series, the second sub-circuit is formed by connecting the first contact of the intermediate relay and the coil of the contactor in series, and the first sub-circuit and the second sub-circuit are connected in parallel with each other; The switch assembly includes: a second contact of the contactor.

3. The control device according to claim 2, characterized in that The first contact and the second contact are normally open contacts.

4. The control device according to claim 2, characterized in that: The photoelectric switch comprises a receiving end and a transmitting end, wherein the receiving end and the transmitting end are arranged in the direction of opening the door and are respectively arranged at two ends of the door.

5. The control device according to claim 2, characterized in that: The control device further comprises: a third sub-circuit, wherein the third sub-circuit is formed by connecting the third contact of the intermediate relay and the coil of the time relay in series; The second sub-circuit is further connected in series with the fourth contact of the time relay between the first contact of the intermediate relay and the coil of the contactor, and the first contact of the intermediate relay is further connected in parallel with the fifth contact of the contactor.

6. The control device according to claim 5, characterized in that The third contact and the fourth contact are normally closed contacts, and the fifth contact is a normally open contact.

7. The control device according to claim 5, characterized in that The time relay controls the fourth contact to be disconnected after being powered on for a preset time period.

8. An air curtain system, characterized in that: The air curtain system comprises: an air curtain machine and a control device for the air curtain machine according to any one of claims 1 to 7; The air curtain machine is installed above the door, the air outlet of the air curtain machine faces the direction of the door, and the air curtain machine is electrically connected to the control device of the air curtain machine.

9. The air curtain system according to claim 8, characterized in that: The air curtain system further comprises a first switch, which is arranged between the control device of the air curtain machine and a power source; And / or, the air curtain system further includes a second switch, and the second switch is arranged between the air curtain machine and a power source.

10. The air curtain system according to claim 8, characterized in that: The air curtain system also includes a temperature sensor and a controller; The controller is electrically connected to the temperature sensor and the air curtain machine respectively, and the controller controls the air volume of the air curtain machine according to the temperature information collected by the temperature sensor.

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