CN105651413A

CN105651413A - Water temperature alarm

Info

Publication number: CN105651413A
Application number: CN201410634328.9A
Authority: CN
Inventors: 申国平; 郝梦扬; 李雷斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-11-12
Filing date: 2014-11-12
Publication date: 2016-06-08

Abstract

The invention discloses a water temperature alarm and belongs to the technical field of electromagnetism. The water temperature alarm comprises a spring switch, an alarm, a protective resistor A, a protective resistor B, a temperature-sensitive resistor, a power supply, a switch, a permanent magnet, an electromagnet B and an electromagnet A. When the apparatus is used, the switch is manually separated from the permanent magnet, the switch in a main loop is switched on, the power supply of the main loop is turned on, as a water temperature decreases, the resistance of the temperature-sensitive resistor becomes smaller and currents in the main loop are increased, when the water temperature decreases to a specific scope, the electromagnet A in a branch II, under a certain current effect, attracts the spring switch in a first branch I down to enable the spring switch to be switched on, and the alarm sounds an alarm so as to prompt people. At the moment, people can manually disconnect the switch to enable the permanent magnet to attract a spring of the switch so as to cancel alarm. If the people do not disconnect the switch timely, when the water temperature decreases to a certain scope, the electromagnet B can attract the spring of the switch in the main loop up under a certain current effect so as to disconnect the switch and cancel the alarm accordingly.

Description

A kind of water temp. alarm

Technical field

The invention belongs to electromagnetism technical field, is specifically related to a kind of water temp. alarm.

Background technology

Water is Source of life, and a lot of situations in life make us that water temperature have certain requirement, and such as the water in vessel relevant in the water in bathing pond, the water in swimming pool, laboratory, one glass of steaming hot water have forgotten and drinks in time sometimes, it may be necessary to is outwelled.

Summary of the invention

The object of the invention is to provide a kind of a kind of device can automatically reported to the police when the water temperature in vessel drops to a certain degree.

A kind of water temp. alarm of the invention, comprising: the circuit that three branch roads in parallel, power supply, switch, thermo-sensitive resistors are connected. Wherein branch road I is in series by spring switch, warning howler; Branch road II is in series by electro-magnet A, protection resistance A; Branch road III is in series by electro-magnet B, protection resistance B. Spring switch in branch road I is open in usual above electro-magnet A, and the lower section of electro-magnet B is the switch in main line, a permanent magnet side by side on the limit of electro-magnet B. When this apparatus is used, manually being separated with permanent magnet by switch, closed main line switch, connects main line power supply, along with the decline of water temperature, the resistance of thermo-sensitive resistor diminishes, and in main line, electric current increases, when water temperature drops to specialized range, electro-magnet A in branch road II is under certain galvanic action, under being inhaled by spring switch in branch road I, spring switch being closed, warning howler just sounds to point out people. Now people can manual cut-off switch, make permanent magnet hold the shell fragment of switch, cancel report to the police. If people do not have cut-off switch timely, when water temperature drops to certain limit, electro-magnet B just can pick up the shell fragment of main line breaker in middle under certain galvanic action, is disconnected switch, eliminate warning, and now the shell fragment of switch is held by permanent magnet while picking up at electro-magnet B just now. Therefore the invention uses timely for prompting people or protects the water of certain water temperature, reduces the wasting of resources, has positive meaning.

Accompanying drawing explanation

As shown in Figure 1, it is the circuit structure diagram of a kind of water temp. alarm.

Wherein: 1-spring switch, 2-warning howler, 3-protect resistance A, 4-to protect resistance B, 5-thermo-sensitive resistor, 6-power supply, 7-switch, 8-permanent magnet, 9-electro-magnet B, 10-electro-magnet A.

Embodiment

Below in conjunction with accompanying drawing, a kind of water temp. alarm of the invention is described further.

As shown in Figure 1, a kind of water temp. alarm comprises spring switch 1, warning howler 2, protection resistance A3, protection resistance B4, thermo-sensitive resistor 5, power supply 6, switch 7, permanent magnet 8, electro-magnet B9, electro-magnet A10.

Before not using this device, switch 7 is open in usual, and the shell fragment of switch 7 is held by permanent magnet 8, and the spring switch 1 in branch road I is open in usual. When using this device, manually being separated with permanent magnet 8 by the shell fragment of switch 7, switch 7 is closed, now power supply has been connected on main line, along with the decline of water temperature, the resistance of thermo-sensitive resistor 5 diminishes, and in main line, electric current increases, when water temperature drops to specialized range, electro-magnet A in branch road II is under certain galvanic action, under being inhaled by spring switch 1 in branch road I, spring switch 1 being closed, warning howler 2 just sounds to point out people. Now people can manual cut-off switch 7, make permanent magnet 8 hold the shell fragment of switch 7, cancel report to the police. If people do not have cut-off switch 7 timely, when water temperature drops to certain limit, electro-magnet B just can pick up the shell fragment of main line breaker in middle 7 under certain galvanic action, is disconnected switch 7, eliminate warning, and now the shell fragment of switch 7 is held by permanent magnet 8 while electro-magnet B just now picks up.

Claims

1. a water temp. alarm, comprise spring switch, warning howler, electro-magnet A, protection resistance A, electro-magnet B, permanent magnet, protection resistance B, switch, power supply, thermo-sensitive resistor, it is characterized in that: three branch roads in parallel, power supply, switch, thermo-sensitive resistors are for being connected in series, and wherein branch road I is in series by spring switch, warning howler; Branch road II is in series by electro-magnet A, protection resistance A; Branch road III is in series by electro-magnet B, protection resistance B.

2. a kind of water temp. alarm according to claim 1, it is characterised in that: the spring switch in branch road I is open in usual, is arranged on the top of electro-magnet A.

3. a kind of water temp. alarm according to claim 1, it is characterised in that: the switch-linear hybrid in main line electro-magnet B and with its permanent magnet side by side below.

4. a kind of water temp. alarm according to claim 1, it is characterised in that: when this apparatus is used, being manually separated with permanent magnet by switch, closed main line switch, connects main line power supply.