CN214223242U - Soft start linkage control switch and system for electric heating - Google Patents

Abstract

The application discloses a soft start linkage control switch for electric heating, which comprises a bottom shell, a circuit board arranged in the bottom shell, a face cover and a display screen, wherein the circuit board comprises a double-layer PCB (printed circuit board) as a main structure and a wiring unit arranged on the double-layer PCB, and the wiring unit consists of a group of wire inlet modules connected with a power supply and two groups of wire outlet modules respectively connected with a load A and a load B; the circuit board comprises a voltage transformation module, a rectification module, a filtering module and a control module, wherein the control module is respectively connected with a temperature setting module, a temperature acquisition module, a temperature control module and a timer for timing and triggering the temperature control module. The load of the electric heating device connected into the power grid is reduced, the working stability of the power grid is improved, the improvement significance to old communities is particularly high, and the cost input of a control switch, the installation labor and the input of material resources are reduced.

Description

Soft start linkage control switch and system for electric heating

Technical Field

The utility model discloses control switch technical field, concretely relates to soft start coordinated control switch and system for electric heating.

Background

The switch is the most basic and simple electrical element which people can touch almost every day in life and work. The switch commonly used for controlling simple electric appliances such as bulbs, lighting equipment, drinking water equipment and the like has a very simple structure, and mainly and exclusively has the function of controlling the on-off of the power supply of the electric appliances. However, for a high-power electrical appliance, the switch of the electrical appliance often has a more complex function, and the purpose of the switch is to better enable the high-power electrical appliance to be connected to/disconnected from a power grid with minimum impact, and simultaneously avoid damage and the like caused by abnormal power failure of the electrical appliance. Such as the existing central air conditioner, electric heating equipment and the like. However, the switches of the high-power electrical appliances in the prior art are all arranged in a one-to-one manner, and each electrical appliance can be controlled by a separate switch, which is not beneficial to reducing the energy consumption for controlling the whole power grid, and simultaneously, the load of the power grid is large.

For indoor heating equipment, because the temperature is relatively balanced, although the existing heating equipment has a mature constant temperature control function, the difference based on the ambient temperature is small, when the ambient temperature is lower than the preset temperature, the heating equipment is usually turned on in a centralized mode within relatively centralized time, and is turned on or turned off in a centralized mode after reaching the preset temperature, so that the impact of a power grid is large, particularly after the heating equipment is added to an old community, the old power grid is impacted too much, a fire disaster is easily caused, and the consequence is not assumed. In order to avoid these realistic problems, this application combines current heating installation work reality, provides a soft start coordinated control switch, can further reduce the heating installation to the impact of electric wire netting under the prerequisite that satisfies automatic thermostatic control, reduces control port simultaneously to save unnecessary control switch's installation scheduling problem.

SUMMERY OF THE UTILITY MODEL

In order to solve the concentrated start that the one-to-one control mode that current indoor electric heating equipment adopted brought, concentrate to close and strike big problem to the electric wire netting, especially old district carries out the electric heating equipment and puts into use the back, strikes big to the electric wire netting, and the big electric wire netting load that can be very big is put into to the big high-power electric wire netting that puts into of concentrating relatively for the power consumption risk increases, causes the possibility increase of conflagration, reforms transform very big unfavorable to the heating system of old district. In order to avoid the problem that the electric heating equipment with one-to-one control is intensively turned on/off to impact the power grid, the soft-start linkage control switch and the system for electric heating are provided, so that the impact of the electric heating equipment on the power grid is reduced as far as possible, the purpose of heating can be achieved, the impact on the power grid is reduced as far as possible, and the power utilization safety accidents caused by the fact that the power grid of an old community cannot bear the power grid are avoided.

Because the control switch technique belongs to very mature technique in prior art, nevertheless in order to more directly perceivedly, clear understanding the utility model discloses with the difference of prior art to and the different technological effects that bring in the practical application process, explain the explanation to current control switch's control principle at first, show the difference of this application with the contrast.

The existing control switch is typically a central air-conditioning control switch, and the setting mode is that each indoor unit is controlled by an independent control switch, generally, a set of central air-conditioning indoor units is different from several to dozens, even dozens, and the number of the indoor units is generally 5-10 aiming at the indoor space with relatively communicated air. The control principle is that after a control switch is turned on, equipment is started to operate according to preset conditions, and the equipment does not have a power grid protection function, so that after a plurality of indoor machines are turned on in a centralized mode, the equipment can be heated in the shortest time due to low indoor temperature, the maximum power is output, the power which is instantly connected into a power grid can be very high, the load impact on the power grid can be very high, and the phenomena of tripping when the air is opened, circuit heating and even firing occur in old districts which are not transformed by some power grids easily, so that the power utilization is extremely unsafe. The operation for avoiding the problem is that the opening time of different control switches is artificially separated at certain time intervals, so that the electric appliances entering the power grid are more dispersed, and the instantaneous impact is greatly reduced. However, the operation becomes complicated, the artificial burden is increased, meanwhile, after the indoor temperature reaches the preset temperature, the electric appliance can be automatically turned off or standby, and can be automatically turned on again until the next time the ambient temperature is detected to be reduced to the preset temperature rise condition, and the electric appliance is automatically turned on again, so that the electric appliance is usually turned on in a relatively centralized manner due to the fact that the electric appliance is automatically collected by the temperature sensor, and the load of the power grid is still very large. Of course, the above description is only for explaining the disadvantage of one-to-one control, and the electric heating device includes but is not limited to a central air conditioner, and may be other electric heating devices, but the principle is substantially the same.

The utility model discloses improved generation control switch has been proposed to this problem, based on a great deal of drawback of one-to-one control, the mode of a pair of two controls has been adopted in this application, mainly carries out delay control to two sets of electro-heat equipment through the time-recorder to the electric wire netting is inserted to rated power's 50%, treats that the second group electro-heat equipment is opened automatically again after first group electro-heat equipment work a period T, thereby avoids too big load to insert the electric wire netting and leads to the too big and unable problem that bears of instantaneous load.

In order to achieve the purpose, the technical scheme adopted by the application is as follows:

a soft start linkage control switch for electric heating comprises a bottom shell, a circuit board arranged in the bottom shell, a surface cover buckled on the bottom shell and used for sealing and fixing the circuit board, and a display screen which is arranged on the surface cover and electrically connected with the circuit board and used for displaying temperature control information, wherein the circuit board comprises a double-layer PCB serving as a main structure, and a wiring unit arranged on the double-layer PCB, and the wiring unit consists of a group of wire inlet modules connected with a power supply and two groups of wire outlet modules respectively connected with a load A and a load B; the circuit board comprises a voltage transformation module, a rectification module, a filtering module and a control module, wherein the control module is respectively connected with a temperature setting module, a temperature acquisition module, a temperature control module and a timer for timing and triggering the temperature control module.

As an optimal arrangement scheme, the wire inlet module comprises two binding posts, the wire outlet module comprises three binding posts and shares one low potential binding post, mounting holes which are arranged on the side wall of the bottom shell and are in one-to-one correspondence with the binding posts are formed in the position, close to the bottom, of the bottom shell, and wire inlet holes which are in one-to-one correspondence with the binding posts and are used for threading are formed in the bottom of the bottom shell.

As one of the preferable schemes, the control module adopts a single chip microcomputer with the model number of AT89C51 as a processor, and the temperature acquisition module adopts a temperature sensor with the model number of D218B 20.

The application also provides an electric heating system, which comprises the soft start linkage control switch and an electric heating device arranged on the side wall of the inner wall of the building or on the ground, wherein the soft start linkage electric connection is provided with two groups of electric heating devices.

The beneficial effects of adopting one-to-two control are that:

firstly, the load of the electric heating device connected to the power grid is reduced, the working stability of the power grid is improved, and the electric heating device is particularly significant in the improvement of old communities.

Secondly, the cost input of the control switch and the input of installation manpower and material resources are reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic diagram of the system structure of the present invention;

FIG. 2 is a flow chart of the present invention;

fig. 3 is a circuit diagram of a load, a rectifying module, a filtering module, and a control module in embodiment 1;

FIG. 4 is a circuit diagram of a display panel in embodiment 1;

FIG. 5 is a circuit diagram of a temperature acquisition module and a temperature control module according to embodiment 1;

FIG. 6 is an exploded view of the structure of example 1;

FIG. 7 is an isometric view of FIG. 6 in an assembled state;

fig. 8 is another visual schematic of fig. 7.

In the figure: 1-a voltage transformation module; 2, a rectification module; 3-a filtering module; 4-a control module; 5-a timer; 6-temperature setting module; 7-a temperature acquisition module; 8-a temperature control module; 9-load A; 10-load B;

11-a bottom shell; 12-a circuit board; 13-face cover; 14-a display screen; 15-wire inlet hole; 16-mounting holes; 17-terminal.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being 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 application can be understood in a specific case by those of ordinary skill in the art.

Example 1:

with reference to fig. 1 to 8, the soft-start coordinated control switch for electric heating includes a bottom case 11, a circuit board 12 installed in the bottom case 11, a surface cover 13 fastened to the bottom case 11 for closing and fixing the circuit board 12, and a display screen 14 installed on the surface cover 13 and electrically connected to the circuit board 12 for displaying temperature control information, wherein the circuit board 12 includes a double-layer PCB serving as a main structure, and a wiring unit disposed on the double-layer PCB, and the wiring unit includes a group of incoming line modules connected to a power supply and two groups of outgoing line modules respectively connected to a load a9 and a load B10; the circuit board 12 comprises a voltage transformation module 1, a rectification module 2, a filtering module 3 and a control module 4, wherein the control module 4 is respectively connected with a temperature setting module 6, a temperature acquisition module 7, a temperature control module 8 and a timer 5 for timing and triggering the temperature control module 8. In the embodiment, the load a9 and the load B10 are implemented by using a heating element in a profile type electric heating system, wherein the application number of the heating element is 2020213368667, and the subject name of the heating element is provided by the applicant in 2020; and application No. 2020226900981 entitled thermally conductive profile assembly for electric heating for heat conduction and dissipation.

The working principle is briefly described as follows:

after the soft start linkage control switch is turned on, the temperature acquisition module 7 respectively acquires temperature data and environment temperature data preset by the temperature setting module 6, and compares the temperature data and the environment temperature data by the temperature control module 8, if the environment temperature data is lower than the preset temperature data, a negative signal is sent to the control module 4, the control module 4 converts the received negative signal into a control signal and sends the control signal to the load A9, the load A9 is started to perform electric heating, the timer 5 is started to perform timing, when the timer 5 reaches a preset delay time, such as 10min, the control module 4 sends the control signal to the load B10 and starts the load B10, at the moment, the load A9 and the load B10 work simultaneously, and when the indoor temperature data is equal to the preset temperature data, the control module 4 sends a turn-off signals to the load A9 and the load B10 simultaneously, so that the load A9 and the load B10 are both in a standby state, and simultaneously triggering the timer 5 again to start timing until the timing duration of the timer 5 reaches a preset pause time, such as 20min, sending a start signal to the load A9 no matter whether the environmental temperature data reaches the condition of restarting the load A9 at the moment, so that the load A9 starts to work and heat up, and playing a role in preserving heat for the environment, triggering the timer 5 again to start timing simultaneously until the timer 5 calculates that the heat preservation working duration of the load A9 reaches the preset time condition, sending a stop signal to the load A9 through the control module 4, closing the load A9, and working circularly according to the preset heat preservation start/stop set time. If the indoor environment temperature data is reduced rapidly in the heat preservation period, the intermittent working load A9 is not enough to maintain the heat preservation condition, when the indoor environment temperature data is lower than the set temperature, the load A is started, the timer 5 is started to time, when the time delay duration is reached, the load B10 is started, and the working contents are repeated.

The beneficial effects of the above working logic of the embodiment are as follows:

1. two loads are controlled through one switch in a linkage mode, the preset delay time is accurately calculated through the timer 5, and the delay time can be set according to actual conditions, so that the impact on a power grid is small, and the soft start is smooth. Aiming at the indoor with small space, the temperature is quickly raised, the purposes of only starting the load A9 and stopping starting the load B10 all the time can be realized by setting longer delay time, so that the indoor heating can be met by less than 50% of power in the whole process, and the energy is saved.

2. The timer 5 is triggered to work by closing and opening the load A9 and/or the load B10 at each time, the working states of the load A9 and the load B10 can be adjusted according to the temperature change and the preset heat preservation program logic, the consumption of electric energy is considered on the premise of meeting the heat preservation, and the waste is avoided.

The flexibility is mainly embodied as follows: if the indoor heat preservation condition is good, the working time of the load A9 can be reduced by setting a longer heat preservation pause time through the temperature setting module 6, if the indoor heat preservation effect is poor, the heat preservation pause time can be shortened to improve the indoor temperature, and the problem of high-power output when the load A9 and the load B10 work simultaneously is solved.

In the embodiment, the circuit shown in fig. 3-5 is used for implementation, and the pull-in and release of the switch K are determined by the high and low levels output by the output end of the operational amplifier N2; when the temperature acquisition module 7 acquires that the environmental temperature data is lower than the preset temperature, the operational amplifier N2 outputs a low level, the V1 is in a saturated state, the switch K is closed, the corresponding load is powered on to work, and heating and temperature rising are started. On the contrary, along with the heating, when the indoor environment temperature data reaches the preset temperature data, the output end of the operational amplifier N2 outputs a high level, so that the V1 is in a cut-off state, the switch K is released, and the corresponding load is powered off and does not work. The operation mode of any load is the same, the only difference is that when the timer 5 is not triggered, the corresponding load does not have an electrical signal and is in a non-operation state, and the specific logic is as described above and will not be described in detail herein.

In this embodiment, in order to facilitate the installation work of wiring, the wire inlet module includes two terminals 17, the wire outlet module includes three terminals 17, a mounting hole 16 that is provided with near the bottom position on the lateral wall of bottom shell 11 and corresponds the setting with terminals 17 one-to-one, the bottom of bottom shell 11 is provided with the wire inlet hole 15 that is used for the threading with terminals 17 one-to-one.

In this embodiment, the control module 4 adopts an AT89C51 single chip microcomputer as a processor, and the temperature acquisition module adopts a D218B20 temperature sensor. Indeed, this embodiment is provided merely to illustrate the logic and structure of the operation of the present invention, and is not the only technical solution that can be implemented. It should be noted that the structure of the bottom shell 11 provided in this embodiment is a buried installation, and can also be implemented by a non-buried installation manner in the prior art, that is, the bottom shell 11 is installed on the inner wall of the building through a fixing connector, such as a screw, a cement nail or an expansion screw.

Example 2:

the embodiment provides an electric heating system, which comprises a soft-start linkage control switch in the embodiment 1 and electric heating devices arranged on the side wall of the inner wall of a building or on the ground, wherein the soft-start linkage is electrically connected with two groups of electric heating devices. The electric heating device is realized by adopting a heating element in a sectional type electric heating system, wherein the application number of the electric heating device is 2020213368667, and the subject name of the electric heating device is submitted in 2020; and application No. 2020226900981 entitled thermally conductive profile assembly for electric heating for heat conduction and dissipation.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (4)

1. The utility model provides a soft start coordinated control switch for electric heating, includes drain pan (11), installs circuit board (12) in drain pan (11), and the lock is used for sealing and fixing on drain pan (11) face lid (13) of circuit board (12) to and on installation face lid (13) on circuit board (12) electricity is connected display screen (14) that are used for showing temperature control information, its characterized in that: the circuit board (12) comprises a double-layer PCB as a main body structure and a wiring unit arranged on the double-layer PCB, wherein the wiring unit consists of a group of wire inlet modules connected with a power supply and two groups of wire outlet modules respectively connected with a load A (9) and a load B (10); the circuit board (12) comprises a voltage transformation module (1), a rectification module (2), a filtering module (3) and a control module (4), wherein the control module (4) is respectively connected with a temperature setting module (6), a temperature acquisition module (7), a temperature control module (8) and a timer (5) for timing and triggering the temperature control module (8).

2. The soft-start coordinated control switch for electric heating according to claim 1, characterized in that: the incoming line module comprises two binding posts (17), the outgoing line module comprises three binding posts (17), mounting holes (16) which are arranged in a one-to-one correspondence mode with the binding posts (17) are formed in the position, close to the bottom, of the side wall of the bottom shell (11), and incoming line holes (15) which are in one-to-one correspondence with the binding posts (17) and used for threading are formed in the bottom of the bottom shell (11).

3. The soft-start coordinated control switch for electric heating according to claim 1, characterized in that: the control module (4) adopts an AT89C51 single chip microcomputer as a processor, and the temperature acquisition module adopts a D218B20 temperature sensor.

4. An electric heating system, its characterized in that: the soft start linkage control switch comprises the soft start linkage control switch as claimed in any one of claims 1-3, and electric heating devices mounted on the side wall of the inner wall of a building or on the ground, wherein the soft start linkage is electrically connected with two groups of electric heating devices.

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