Load feedback relay device and apparatus

Abstract

The application discloses a load feedback type relay device and equipment, and relates to the relay device, which comprises a relay, a controller and a feedback circuit; the control end of the relay is connected with the signal output end of the controller; the controlled end of the relay is connected with the external load; the control signal output by the controller drives the external load to run through the control of the relay; the feedback circuit is connected with the controlled end of the relay and the signal detection end of the controller; and the feedback circuit transmits the electric signal generated when the external load runs to the controller. The application optimizes the traditional relay; compared with the traditional relay, the application adds the feedback circuit, which is used for feeding back the electric signal when the load runs to the controller; therefore, the load feedback type relay can monitor and feed back the running state of the load in real time in the working state.

Description

Technical Field

[0001] This invention relates to the field of relays, and in particular to a load feedback type relay device and equipment. Background Technology

[0002] Relays are widely used in air conditioning products, for example, to control the on / off state of external loads, thus achieving the effect of low-voltage control of high-voltage. However, existing relays lack load signal feedback functionality, making it impossible to monitor and provide feedback on the operating status of the load. Summary of the Invention

[0003] In order to solve the technical problem that relays cannot provide feedback on load operating status in the prior art, the present invention proposes a load feedback type relay device and equipment.

[0004] The technical solution adopted in this invention is:

[0005] This invention proposes a load feedback type relay device and apparatus, wherein the load feedback type relay device includes:

[0006] A relay, wherein the control terminal of the relay is connected to the signal output terminal of the controller, the controlled terminal of the relay is connected to an external load, and the control signal output by the controller drives the external load to operate by controlling the relay;

[0007] A feedback circuit connects the controlled terminal of the relay to the signal detection terminal of the controller, and the feedback circuit transmits the electrical signal generated by the external load during operation to the controller.

[0008] Furthermore, the feedback circuit includes: a first coupling element and a second coupling element coupled together, the first coupling element being connected to the controlled terminal of the relay, one end of the second coupling element being connected to the signal detection terminal, and the other end of the second coupling element being grounded.

[0009] Preferably, the first coupling element and the second coupling element are connected by electromagnetic coupling.

[0010] Preferably, the relay includes an electromagnetic coil L3 and an electromagnetic switch K1 connected by electromagnetic coupling. One end of the electromagnetic coil L3 is connected to the signal output terminal, and the other end of the electromagnetic coil L3 is grounded. Both ends of the electromagnetic switch K1 are connected to the external load.

[0011] Preferably, the first coupling element is an electromagnetic coil L1, and the second coupling element is an electromagnetic coil L2.

[0012] Preferably, the first coupling element is an electromagnetic coil L1, and the second coupling element is an electromagnetic switch K2.

[0013] Furthermore, a filter is connected between the feedback circuit and the signal detection terminal.

[0014] The equipment includes the load feedback type relay device described above.

[0015] Preferably, the device includes an air conditioner.

[0016] Compared with the prior art, the present invention optimizes the traditional relay. Compared with the traditional relay, the present invention adds a feedback circuit. The feedback circuit is used to feed back the electrical signal of the load during operation to the controller. Therefore, the load feedback type relay proposed in the present invention can monitor and feed back the operating status of the load in real time during operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a load feedback relay device in one embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the load feedback relay device in another embodiment of the present invention. Detailed Implementation

[0020] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0021] Relays are widely used in air conditioning products, for example, to control the on / off state of external loads, thus achieving the effect of low-voltage control of high-voltage. However, existing relays lack load signal feedback functionality, making it impossible to monitor and provide feedback on the operating status of the load.

[0022] Therefore, in order to solve the technical problem that relays in the prior art cannot monitor and provide feedback on the operating status of the load, this invention proposes a load feedback type relay device, comprising:

[0023] The relay's control terminal is connected to the controller's signal output terminal, while the relay's controlled terminal is connected to an external load. The controller's output control signal drives the external load through the control relay.

[0024] The feedback circuit connects the controlled terminal of the relay to the signal detection terminal of the controller, transmitting the electrical signals generated by the external load during operation to the controller.

[0025] Therefore, it can be seen that the present invention optimizes the traditional relay. Compared with the traditional relay, the present invention adds a feedback circuit. The feedback circuit is used to feed back the electrical signal of the load during operation to the controller. Therefore, the load feedback type relay proposed in the present invention can monitor and feed back the operating status of the load in real time during operation.

[0026] The principles and structure of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0027] like Figure 1 and Figure 2 As shown, the present invention proposes a load feedback type relay device, comprising:

[0028] The relay's control terminal is connected to the controller's signal output terminal, and the relay's controlled terminal is connected to the external load. The controller's signal output terminal outputs a control signal to control the relay to close or open. When the controller's output control signal controls the relay to close, the external load runs; when the controller's output control signal controls the relay to open, the external load stops running.

[0029] The feedback circuit connects the controlled terminal of the relay to the signal detection terminal of the controller. The feedback circuit transmits the electrical signal generated by the external load during operation to the controller, and the controller receives and analyzes the electrical signal to obtain the operating status of the load.

[0030] Specifically, such as Figure 1 As shown, in one embodiment, the relay includes an electromagnetic coil L3 and an electromagnetic switch K1 connected by electromagnetic coupling. The electromagnetic coil L3 is located at the control terminal of the relay, and the electromagnetic switch K1 is located at the controlled terminal of the relay. One end of the electromagnetic coil L3 is connected to the signal output terminal of the controller, and the other end of the electromagnetic coil L3 is grounded. Both ends of the electromagnetic switch K1 are connected to an external load. The feedback circuit includes a first coupling element and a second coupling element connected by electromagnetic coupling. The first coupling element is the electromagnetic coil L1, and the second coupling element is the electromagnetic coil L2. The electromagnetic coil L1 is connected in series with the electromagnetic switch K1. One end of the electromagnetic coil L2 is grounded, and the other end of the electromagnetic coil L2 is connected to the signal detection terminal of the controller. A filter is connected between the electromagnetic coil L2 and the signal detection terminal of the controller.

[0031] Therefore, when the controller outputs a control signal (which can be a high-level signal), electromagnetic coil L3 is energized, electromagnetic switch K1 is closed, and the external load operates. At this time, a voltage / current signal is generated on electromagnetic coil L1. This voltage / current signal is coupled to electromagnetic coil L2. After being rectified and filtered by a filter, the voltage / current signal generated by electromagnetic coil L1 is transmitted to the controller, which analyzes it to obtain information about the external load. Simultaneously, if the power supply is AC, the voltage / current signal generated by electromagnetic coil L1 during the operation of the external load will also be constantly changing. The controller can analyze these changes to determine whether the external load is operating normally.

[0032] Specifically, such as Figure 2 As shown, in another embodiment, the relay includes an electromagnetic coil L3 and an electromagnetic switch K1 connected by electromagnetic coupling. The electromagnetic coil L3 is located at the control terminal of the relay, and the electromagnetic switch K1 is located at the controlled terminal of the relay. One end of the electromagnetic coil L3 is connected to the signal output terminal of the controller, and the other end of the electromagnetic coil L3 is grounded. Both ends of the electromagnetic switch K1 are connected to an external load. The feedback circuit includes a first coupling element and a second coupling element connected by electromagnetic coupling. The first coupling element is the electromagnetic coil L1, and the second coupling element is the electromagnetic switch K2. The electromagnetic coil L1 and the electromagnetic switch K1 are connected in series. One end of the electromagnetic switch K2 is grounded, and the other end of the electromagnetic switch K2 is connected to the signal detection terminal of the controller. A filter is connected between the electromagnetic switch K2 and the signal detection terminal of the controller.

[0033] Therefore, when the controller outputs a control signal (which can be a high-level signal), the electromagnetic coil L3 is energized, the electromagnetic switch K1 is closed, and the external load is running. At this time, when the electromagnetic switch K1 is closed, a voltage / current signal is generated. The voltage / current signal generated when the electromagnetic switch K1 is closed will be coupled to the electromagnetic coil L2. The voltage / current signal generated when the electromagnetic switch K1 is closed is rectified and filtered by the filter before being transmitted to the controller. The controller analyzes this to obtain information about the external load. The controller can determine whether the external load is in a running state or a stopped state by judging whether it receives the voltage / current signal.

[0034] This invention also proposes a device including a controller and the load feedback relay device described above. Specifically, the load feedback relay device includes: a relay, the control terminal of which is connected to the signal output terminal of the controller, the controlled terminal of which is connected to an external load, and the signal output terminal of the controller outputs a control signal to control the relay to close or open. When the control signal output by the controller controls the relay to close, the external load operates; when the control signal output by the controller controls the relay to open, the external load stops operating. A feedback circuit is connected to the controlled terminal of the relay and the signal detection terminal of the controller. The feedback circuit transmits the electrical signal generated by the external load during operation to the controller, and the controller receives and analyzes the electrical signal to obtain the operating status of the load.

[0035] It should be noted that the terminology used above is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A load feedback relay device, characterized by, include: A relay, wherein the control terminal of the relay is connected to the signal output terminal of the controller, the controlled terminal of the relay is connected to an external load, and the control signal output by the controller drives the external load to operate by controlling the relay; A feedback circuit connects the controlled terminal of the relay to the signal detection terminal of the controller, and the feedback circuit transmits the electrical signal generated by the external load during operation to the controller. The feedback circuit includes: a first coupling element and a second coupling element coupled together, wherein the first coupling element is connected to the controlled terminal of the relay, one end of the second coupling element is connected to the signal detection terminal, and the other end of the second coupling element is grounded; The relay includes an electromagnetic coil L3 and an electromagnetic switch K1 connected by electromagnetic coupling. One end of the electromagnetic coil L3 is connected to the signal output terminal, and the other end of the electromagnetic coil L3 is grounded. Both ends of the electromagnetic switch K1 are connected to the external load. The first coupling element and the second coupling element are connected by electromagnetic coupling; The first coupling element is an electromagnetic coil L1, and the second coupling element is an electromagnetic coil L2; Alternatively, the first coupling element may be an electromagnetic coil L1, and the second coupling element may be an electromagnetic switch K2.

2. The load feedback relay device according to claim 1, wherein A filter is connected between the feedback circuit and the signal detection terminal.

3. Apparatus characterized by Includes the load feedback type relay device as described in any one of claims 1-2.

4. The apparatus of claim 3, wherein, The equipment includes an air conditioner.

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