Gravity switch, gravity switching circuit and radiant electric heater

Abstract

The invention discloses a gravity switch, a gravity switching circuit and a radiant electric heater; the gravity switch comprises a first hollow tube; the first switch and the second switch are respectively arranged at the two ends of the first hollow tube; the first hollow tube is provided with a second hollow tube with two ends closed; the second hollow tube is provided with a rolling element, so that when the rolling element rolls to one end of the second hollow tube in the second hollow tube, the second hollow tube touches the first switch or the second switch; the gravity switching circuit comprises a gravity switch; the radiant electric heater comprises a radiant electric heater body; the radiant electric heater body is provided with a gravity switch and at least two ranging probes; the first switch and the second switch of the gravity switch are respectively connected to a ranging probe, so that when the position of the radiant electric heater changes, the gravity switch is connected to at least one ranging probe through the first switch or the second switch. The invention realizes power-off protection when the position of the radiant electric heater changes through the gravity switch.

Description

Technical Field

[0001] The invention relates to a radiant electric heater. Background Art

[0002] Radiant electric heater is a kind of equipment development route of electric heating. Its heating element adopts Ni-Cr80 nickel-chromium alloy heating wire, and the heating tube body adopts seamless SUS304 stainless steel heating tube combination, and is filled with high-temperature magnesium powder inside. The radiant surface temperature is high, generally above 280℃, and the height from the ground is not less than 1.8 meters. Since the radiant electric heater must be hung on the wall for use, its surface temperature is high; when the radiant electric heater is tilted, dropped or inverted, the radiant electric heater is still working, which causes safety hazards. Summary of the invention

[0003] The object of the present invention is to provide a gravity switch, a gravity switching circuit and a radiant electric heater, so as to realize power-off protection when the position of an electrical appliance changes.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] In a first aspect, an embodiment of the present invention provides a gravity switch, comprising a first hollow tube;

[0006] A first switch and a second switch are respectively provided at two ends of the first hollow tube;

[0007] A movable part is provided in the first hollow tube; when the movable part moves to one end of the first hollow tube under the action of gravity, the movable part touches or approaches the first switch or the second switch, so that the touched or approached switch performs an on-off operation.

[0008] Alternatively, the movable member comprises a second hollow tube with both ends closed;

[0009] The second hollow tube is provided with a rolling element, so that when the rolling element rolls in the second hollow tube to one end of the second hollow tube, the second hollow tube touches or approaches the first switch or the second switch, so that the touched or approached switch performs an on-off operation.

[0010] Alternatively, the first switch and the second switch are selected from a contact switch, a proximity switch or an electromagnetic micro switch.

[0011] Alternatively, a bracket for supporting the second hollow tube is disposed in the first hollow tube.

[0012] In a second aspect, an embodiment of the present invention provides a gravity switching circuit, comprising the gravity switch; the first switch is a first electromagnetic micro switch; the second switch is a second electromagnetic micro switch;

[0013] The normally open contact of the first electromagnetic micro switch is connected in series with the contactor KM1 through the normally closed contact of the second electromagnetic micro switch; the electromagnetic coil of the first electromagnetic micro switch is connected in parallel to the contactor KM1;

[0014] The normally open contact of the second electromagnetic micro switch is connected in series with the contactor KM2 through the normally closed contact of the first electromagnetic micro switch;

[0015] The contactor KM2 is connected in parallel with an electromagnetic coil of a second electromagnetic micro switch.

[0016] In a third aspect, an embodiment of the present invention provides a radiant electric heater, comprising a radiant electric heater body; the radiant electric heater body is provided with the gravity switch and at least two distance measuring probes;

[0017] The first switch and the second switch of the gravity switch are respectively connected to a distance measuring probe, so that when the position of the radiant electric heater changes, the gravity switch is connected to at least one distance measuring probe through the first switch or the second switch.

[0018] Alternatively, the at least two distance measuring probes include an upper distance measuring probe and a lower distance measuring probe; so that when the radiant electric heater is inverted, the gravity switch is connected to the upper distance measuring probe through the first switch or the second switch.

[0019] Alternatively, the at least two distance measuring probes are connected to the radiant electric heater body via the gravity switching circuit.

[0020] Alternatively, a smoke detector is provided on the radiant electric heater body.

[0021] Alternatively, a remote control module is provided on the radiant electric heater body.

[0022] Alternatively, the radiant electric heater body includes a main controller, an electric heating element and a main switch; the main controller is respectively connected to the WiFi communication module, the main switch, the electric heating element, the smoke detector, the upper ranging probe and the lower ranging probe; the main switch is connected to the electric heating element through a fuse.

[0023] The aforementioned main scheme of the present invention and its further options can be freely combined to form multiple schemes, all of which are schemes that can be adopted and claimed for protection by the present invention; and in the present invention, (non-conflicting options) options and other options can also be freely combined. After understanding the scheme of the present invention, those skilled in the art can understand that there are many combinations based on the prior art and common knowledge, all of which are technical schemes to be protected by the present invention, and they are not exhaustively listed here.

[0024] Beneficial effects of the embodiments of the present invention:

[0025] The gravity switch of the embodiment of the present invention moves toward one end of the first hollow tube through the movable part and contacts the switch at the corresponding end, thereby achieving the purpose of connecting the gravity switch to the switch at the corresponding end under different tilting states.

[0026] The gravity switching circuit of the embodiment of the present invention adopts the design of gravity switch and interlocking circuit, thereby avoiding the potential safety hazard caused by misoperation.

[0027] The radiant electric heater of the embodiment of the present invention realizes power-off protection when the position of the radiant electric heater changes through the gravity switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of embodiment 1 of the present invention.

[0029] Figure 2 It is a schematic diagram of the structure of embodiment 2 of the present invention.

[0030] Figure 3 It is a circuit schematic diagram of the radiant electric heater of embodiment 3 of the present invention.

[0031] Figure 4 It is a top view of a radiant electric heater.

[0032] Figure 5 It is a schematic diagram of the connection circuit between the main controller and the distance measuring probe.

[0033] Figure 6 This is a schematic diagram of the layout of the ranging probe and gravity switch.

[0034] In the figure, 1 is the first switch, 2 is the first hollow tube, 3 is the second hollow tube, 4 is the gravity ball, 5 is the second switch, 6 is the bracket, 7 is the main controller, 8 is the main switch, 9 is the fuse, 10 is the electric heating element, 11 is the gravity switch, 12 is the smoke detector, 13 is the left ranging probe, 14 is the right ranging probe, 15 is the upper ranging probe, and 16 is the lower ranging probe. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with specific embodiments and drawings.

[0036] Example 1

[0037] In order to achieve power-off protection when the position of an electrical appliance changes, an embodiment of the present invention provides a gravity switch. When the position of the electrical appliance changes, the center of gravity of the electrical appliance changes. The gravity switch senses the position change of the electrical appliance and turns on or off the corresponding switch, thereby achieving power-off protection for the electrical appliance.

[0038] Specifically, the gravity switch includes a first hollow tube 2; a first switch 1 and a second switch 5 are respectively provided at both ends of the first hollow tube; a movable part is provided in the first hollow tube; when the movable part moves to one end of the first hollow tube under the action of gravity, the movable part touches or approaches the first switch 1 or the second switch 5, so that the touched or approached switch performs an on-off operation.

[0039] When the position of the gravity switch changes under the action of gravity, the first hollow tube tilts, and the movable part in the first hollow tube moves toward one end of the first hollow tube until the movable part contacts or approaches the switch at one end of the first hollow tube, thereby turning the switch on or off to perform a power-off operation, thereby achieving power-off protection for the electrical appliance.

[0040] Alternatively, the movable member may be any movable component that can slide or roll in the first hollow tube, such as a slider, a ball, a roller, etc.

[0041] Alternatively, a gravity switch includes a first hollow tube; a first switch and a second switch are respectively provided at both ends of the first hollow tube; a second hollow tube with closed ends is provided in the first hollow tube; a rolling element is provided in the second hollow tube, so that when the rolling element rolls in the second hollow tube to one end of the second hollow tube, the second hollow tube touches the first switch or the second switch.

[0042] Alternatively, the rolling element is a gravity ball 4 .

[0043] like Figure 1 As shown, the gravity switch includes a first hollow tube; the upper end and the lower section of the first hollow tube are respectively provided with a first switch 1 and a second switch 5, the second hollow tube 3 is arranged inside the first hollow tube 2, and the second hollow tube can move inside the first hollow tube under the action of gravity; when the second hollow tube moves inside the first hollow tube, it touches the upper end or the lower end of the first hollow tube, thereby realizing the on and off of the first switch or the second switch.

[0044] Optionally, the first switch and the second switch are selected from contact switches, proximity switches or electromagnetic micro switches, and other components that can realize switching by sensing the proximity or touch of the second hollow tube.

[0045] Optionally, the second hollow tube is movably disposed inside the first hollow tube; the second hollow tube may also be slidably disposed inside the first hollow tube.

[0046] In order to ensure the stability of the movement of the second hollow tube 3 in the first hollow tube, as an option, a bracket 6 for supporting the second hollow tube is provided in the first hollow tube. The second hollow tube 3 is movably connected to the first hollow tube 3 through the bracket 6.

[0047] Example 2

[0048] This embodiment provides a gravity switching circuit based on Embodiment 1. Figure 2 As shown, the gravity switching circuit includes the gravity switch of Example 1; as an option, the first switch is a first electromagnetic micro switch; the second switch is a second electromagnetic micro switch. The normally open contact of the first electromagnetic micro switch is connected in series with the contactor KM1 through the normally closed contact of the second electromagnetic micro switch; the electromagnetic coil KM3 of the first electromagnetic micro switch is connected in parallel to the contactor KM1;

[0049] The normally open contact of the second electromagnetic micro switch is connected in series with the contactor KM2 through the normally closed contact of the first electromagnetic micro switch;

[0050] The contactor KM2 is connected in parallel with an electromagnetic coil KM4 of a second electromagnetic micro switch.

[0051] The working process is as follows:

[0052] When the position of the gravity switch changes, the movable part moves toward the upper end of the first hollow tube, triggering the first electromagnetic microswitch K3; at this time, the normally open contact of the first electromagnetic microswitch K3 is closed, the normally closed contact of the first electromagnetic microswitch K3 is opened, and the electromagnetic coil KM3 of the electromagnetic microswitch is turned on, generating an attractive force, firmly sucking the micromoving contact piece to prevent misoperation; conversely, when the movable part moves toward the lower end of the first hollow tube, the second electromagnetic microswitch K4 is triggered; the normally open contact of the second microswitch K4 is closed, the normally closed contact of the second microswitch K4 is opened, and the electromagnetic coil KM4 of the electromagnetic microswitch is turned on, generating an attractive force, firmly sucking the micromoving contact piece to prevent misoperation.

[0053] Example 3

[0054] This embodiment provides a radiant electric heater based on the embodiment 1 or 2. Figure 3-6 As shown, the radiant electric heater comprises a radiant electric heater body; the radiant electric heater body is provided with the gravity switch 11 and at least two distance measuring probes;

[0055] The first switch and the second switch of the gravity switch 11 are respectively connected to a distance measuring probe, so that when the position of the radiant electric heater changes, the gravity switch is connected to at least one distance measuring probe through the first switch or the second switch.

[0056] As an option, when the position of the radiant electric heater changes, the gravity switch can be connected to the ranging probe in the direction of the position change of the radiant electric heater, so as to judge whether the position of the radiant computer changes upward, downward, left or right according to the position information of the connected ranging probe; for example, when the position of the radiant electric heater changes to the left, the gravity switch is connected to the left ranging probe through the first switch or the second switch; thereby, when the position of the radiant electric heater changes, the purpose of ranging detection is achieved through the ranging probe in the corresponding direction, thereby avoiding safety hazards.

[0057] Alternatively, if Figure 6 As shown, the radiant electric heater is provided with a left distance measuring probe 13, a right distance measuring probe 14, an upper distance measuring probe 15 and a lower distance measuring probe 16 at the top, bottom, left and right sides thereof respectively.

[0058] Alternatively, the at least two distance measuring probes include an upper distance measuring probe and a lower distance measuring probe; so that when the radiant electric heater is inverted, the gravity switch is connected to the upper distance measuring probe through the first switch or the second switch.

[0059] like Figure 6 As shown, the upper ranging probe 15 and the lower ranging probe 16 are respectively arranged on the upper and lower sides of the radiant electric heater. When the radiant electric heater is inverted, the upper ranging probe 15 is located below the radiant electric heater, that is, at this time, the upper ranging probe 15 is used to detect the distance between the radiant electric heater and the bottom; at this time, the gravity switch is connected to the upper ranging probe through the first switch or the second switch, thereby realizing the detection of the distance below, thereby avoiding the safety hazard of continuing heating when the radiant electric heater is inverted.

[0060] Alternatively, the at least two distance measuring probes are connected to the radiant electric heater body via the gravity switching circuit.

[0061] To enhance safety and detect smoke, a smoke detector is optionally provided on the radiant electric heater body. Figure 4 As shown, optionally, a smoke probe 12 is provided on each diagonal of the exterior of the radiant electric heater body.

[0062] Alternatively, a remote control module is provided on the radiant electric heater body.

[0063] By adding a remote control module to the radiant electric heater body, the radiant electric heater can be turned on and off by remote operation, making it easy to eliminate safety hazards in a timely manner.

[0064] Alternatively, the radiant electric heater body includes a main controller 7, an electric heating element 10 and a main switch 8; the main controller is respectively connected to the WiFi communication module, the main switch, the electric heating element, the smoke detector, the upper ranging probe 15 and the lower ranging probe; the main switch is connected to the electric heating element through a fuse 9.

[0065] By adding a fuse to the radiant electric heater body, the radiant electric heater is made safer; by connecting the main controller with the WiFi communication module, the radiant electric heater can be controlled through a remote network.

[0066] Optionally, in order to enhance the safety of the radiant electric heater, the signals of the two smoke detectors and the four distance measuring detectors are transmitted to the main controller in real time to determine whether the conditions for closing the main switch are met. The six detector signals are ANDed, that is, if the signal of any detector is 0, the main switch is disconnected and stops working.

[0067] When there is no smoke, the two smoke detectors are 1. When the left and right distance measuring probes measure the distance to the adjacent object to be greater than 0.5 meters, the left and right distance measuring probes are 1. The upper and lower probes are in activation and standby states under the control of the gravity switch. When the electric heater is placed upright, the lower frame distance measuring probe works. When the distance measuring probe measures a distance greater than 1.8 meters, the output value is 1, otherwise the output value is 0. The upper frame distance measuring probe is on standby, and the output value is always 1 in the standby state. When the electric heater is inverted, the upper and lower distance measuring probes change their working states, the lower probe is on standby, and the upper probe is activated. This control is achieved through the gravity switch.

[0068] The aforementioned basic examples of the present invention and their further selected examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed for protection by the present invention. In the scheme of the present invention, each selected example can be arbitrarily combined with any other basic example and selected example. This is not exhaustive, and those skilled in the art will know that there are many combinations.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gravity switching circuit, It is characterized in that It includes a gravity switch; the gravity switch includes a first hollow tube; two ends of the first hollow tube are respectively provided with a first switch and a second switch; A movable part is provided in the first hollow tube; when the movable part moves to one end of the first hollow tube under the action of gravity, the movable part touches or approaches the first switch or the second switch, so that the touched or approached switch performs an on-off operation; The movable member comprises a second hollow tube with both ends closed; The second hollow tube is provided with a rolling element, so that when the rolling element rolls in the second hollow tube to one end of the second hollow tube, the second hollow tube touches or approaches the first switch or the second switch, so that the touched or approached switch performs an on-off operation; The first switch is a first electromagnetic micro switch; the second switch is a second electromagnetic micro switch; A bracket for supporting the second hollow tube is provided in the first hollow tube; The normally open contact of the first electromagnetic micro switch is connected in series with the contactor KM1 through the normally closed contact of the second electromagnetic micro switch; the electromagnetic coil of the first electromagnetic micro switch is connected in parallel to the contactor KM1; The normally open contact of the second electromagnetic micro switch is connected in series with the contactor KM2 through the normally closed contact of the first electromagnetic micro switch; The contactor KM2 is connected in parallel with an electromagnetic coil of a second electromagnetic micro switch.

2. The gravity switching circuit according to claim 1, It is characterized in that The first switch and the second switch are selected from contact switches, proximity switches or electromagnetic micro switches.

3. A radiant electric heater, It is characterized in that It comprises a radiant electric heater body; the radiant electric heater body is provided with a gravity switch and at least two distance measuring probes; The gravity switch comprises a first hollow tube; a first switch and a second switch are respectively disposed at two ends of the first hollow tube; a movable part is disposed in the first hollow tube; when the movable part moves to one end of the first hollow tube under the action of gravity, the movable part touches or approaches the first switch or the second switch, so that the touched or approached switch performs an on-off operation; The movable part comprises a second hollow tube with closed ends; a rolling part is provided in the second hollow tube, so that when the rolling part rolls in the second hollow tube to one end of the second hollow tube, the second hollow tube touches or approaches the first switch or the second switch, so that the touched or approached switch performs an on-off operation; The first switch and the second switch are selected from contact switches, proximity switches or electromagnetic micro switches; A bracket for supporting the second hollow tube is provided in the first hollow tube; The first switch and the second switch of the gravity switch are respectively connected to a distance measuring probe, so that when the position of the radiant electric heater changes, the gravity switch is connected to at least one distance measuring probe through the first switch or the second switch; The at least two distance measuring probes include an upper distance measuring probe and a lower distance measuring probe; when the radiant electric heater is inverted, the gravity switch is connected to the upper distance measuring probe through the first switch or the second switch.

4. The radiant electric heater according to claim 3, It is characterized in that The at least two distance measuring probes are connected to the radiant electric heater body through the gravity switching circuit as claimed in claim 1.

5. The radiant electric heater according to claim 3, It is characterized in that A smoke detector is arranged on the radiant electric heater body.

6. The radiant electric heater according to claim 3, It is characterized in that The radiant electric heater body includes a main controller, an electric heating element and a main switch; the main controller is respectively connected to a WiFi communication module, a main switch, an electric heating element, a smoke sensor, an upper ranging probe and a lower ranging probe; the main switch is connected to the electric heating element through a fuse.

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