CN213345311U - Prevent dry combustion method control system and drinking bowl - Google Patents

Abstract

The utility model provides a prevent dry combustion method control system and drinking bowl belongs to water dispenser technical field. The method solves the problems of slow reaction and the like when the temperature rising rate is abnormal in the prior art. The dry-burning prevention control system comprises a control module and an electric heating module electrically connected with the control module in a wired mode, and further comprises a thermal protection module and a heating temperature detection module used for detecting the temperature of the electric heating module during heating, wherein the thermal protection module is electrically connected with the control module in the wired mode, and the heating temperature detection module is electrically connected with the control module in the wired mode. This prevent dry combustion method control system and drinking bowl's advantage lies in: the heating temperature detection module, the heating rate calculation module and the heating abnormity judgment module are arranged, so that whether the current electric heating water dispenser is in an abnormal state of dry heating can be automatically judged, and in addition, the power supply is automatically cut off by calling the abnormal heating electric control execution module when the heating is in an abnormal state, and the purpose of preventing the dry heating is achieved.

Description

Prevent dry combustion method control system and drinking bowl

Technical Field

The utility model belongs to the technical field of the water dispenser, especially, relate to a prevent dry combustion method control system and drinking bowl.

Background

As a conventional popular product, each household of drinking water electric appliance has safety performance and reliability which should be paid most attention at the present stage.

The conventional electrified heating drinking water electrical apparatus of present trade all accords with national electrical apparatus safety requirement, and conventional drinking water electrical apparatus realizes electrical apparatus protection control through temperature controller and fuse, nevertheless because the temperature controller belongs to the machine action, and sensitivity is not high, can the time delay action under the normal conditions to lead to drinking water electrical apparatus dry combustion method under the water shortage condition, the hot package secondary water supply that appears scorching and smoking because of the high temperature appears the peculiar smell probably.

SUMMERY OF THE UTILITY MODEL

A first object of the present invention is to solve at least a part of the above problems.

The second objective of the utility model is to provide a drinking bowl including above-mentioned dry combustion method control system.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the utility model discloses a prevent dry combustion method control system, including control module and the electric heating module rather than the wired electricity is connected, the system still includes the heating temperature detection module of the temperature when hot protection module and being used for detecting the electric heating module heating, and hot protection module is connected with the wired electricity of control module, and heating temperature detection module is connected with the wired electricity of control module.

In the above dry-burning prevention control system, the control module includes a heating rate calculation module and a heating abnormality determination module electrically connected to the heating rate calculation module by wire, and the heating rate calculation module is electrically connected to the heating temperature detection module by wire.

In the above dry-burning prevention control system, the system further comprises an abnormal temperature-rise electronic control execution module, the control module is electrically connected with the abnormal temperature-rise electronic control execution module in a wired manner, and the abnormal temperature-rise judgment module is called by the control module after judging that the abnormal temperature-rise electronic control execution module is abnormal.

In the above dry-burning prevention control system, the abnormal temperature-rise electronic control execution module includes at least one relay provided on a live wire.

In the above dry-heating prevention control system, the heating temperature detection module includes a thermosensitive temperature sensing probe.

In the above dry-burning prevention control system, the thermal protection module includes at least one temperature controller.

In the above dry-burning prevention control system, the number of the temperature controllers is two, and the two temperature controllers are respectively connected in series to two positive and negative level terminals on the electric heating module.

Foretell drinking bowl, including the shell body, its characterized in that: the outer shell is internally provided with an anti-dry heating control system.

Compared with the prior art, this prevent dry combustion method control system and drinking bowl's advantage lies in: the heating temperature detection module, the heating rate calculation module and the heating abnormity judgment module are arranged, so that whether the current electric heating water dispenser is in an abnormal state of dry heating can be automatically judged, and in addition, the power supply is automatically cut off by calling the abnormal heating electric control execution module when the heating is in an abnormal state, and the purpose of preventing the dry heating is achieved.

Drawings

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

Fig. 1 provides a schematic circuit diagram of an anti-dry heating control system in an embodiment of the present invention.

Fig. 2 provides a schematic diagram of the working principle of the dry burning prevention control system in the embodiment of the present invention.

In the figure, a control module 100, an MCU control chip 101, a temperature-rise rate calculation module 110, a temperature-rise abnormality determination module 120, an electric heating module 200, a thermal protection module 300, a temperature controller 301, a heating temperature detection module 400, a thermosensitive temperature sensing probe 401, an abnormal temperature-rise electric control execution module 500, a relay 501, and a power switch 600.

Detailed Description

The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.

The water fountain comprises an outer shell (not shown in the figure), wherein an anti-dry heating control system is arranged in the outer shell.

As shown in fig. 1 to 2, the dry heating prevention control system includes a control module 100 and an electric heating module 200 electrically connected to the control module by wire, and further includes a thermal protection module 300 and a heating temperature detection module 400 for detecting the temperature of the electric heating module 200 during heating, wherein the thermal protection module 300 is electrically connected to the control module 100 by wire, and the heating temperature detection module 400 is electrically connected to the control module 100 by wire.

It should be noted that the control module here is generally a control circuit board including the MCU control chip 101.

Additionally, the electrical heating module 200 herein generally includes an electrical heating tube and/or an electrical resistance wire.

Additionally, the control module 100 includes a temperature-rise rate calculation module 110 and a temperature-rise abnormality determination module 120 electrically connected to the temperature-rise rate calculation module 110 by wire, and the temperature-rise rate calculation module 110 is electrically connected to the heating temperature detection module 400 by wire.

The temperature increase rate calculation module 110 is an arithmetic operation circuit on the control circuit board, and the temperature increase abnormality determination module 120 is a comparison operation circuit on the control circuit board.

Specifically, the temperature increase rate calculation module 110 herein calculates the temperature increase rate in such a manner that the difference between the heating temperature currently detected by the heating temperature detection module 400 and the last heating temperature detected by the heating temperature detection module 400 is subtracted from the set temperature detection interval time (e.g., 10 s).

Additionally, the abnormal temperature-rise determination module 120 is obtained by comparing the current temperature-rise rate calculated by the abnormal temperature-rise determination module 120 with a normal temperature-rise rate threshold set by the system, that is, if the former is greater than or equal to the latter, the abnormal temperature-rise determination module 120 determines that the temperature-rise rate is abnormal, and it is likely that dry burning occurs.

For example, the normal water heating rate is 0.048 ℃/s, the time 1440s is required for the temperature rise of 70 ℃, the dry heating rate is 0.7 ℃/s, the time 120s is required for the temperature rise of 140 ℃, 5s is used as a temperature detection interval time, and if the two temperature differences detected before and after the latest temperature detection interval time are greater than or equal to 3.5 ℃, the temperature rise rate is judged to be abnormal.

The system further comprises an abnormal temperature rise electronic control execution module 500, wherein the control module 100 is electrically connected with the abnormal temperature rise electronic control execution module 500 in a wired mode, and the abnormal temperature rise judgment module 120 is called by the control module 100 after judging that the abnormal temperature rise electronic control execution module is abnormal.

Specifically, the abnormal temperature rise electronic control execution module 500 includes at least one relay 501 provided on a live wire.

Because the relay 501 belongs to electric control, the speed of the relay is far faster than that of a common temperature controller belonging to mechanical action, and the power supply can be cut off more quickly when the water dispenser is in an abnormal state (such as dry burning) with abnormal temperature rising rate.

Additionally, the heating temperature detection module 400 includes a temperature sensitive probe 401, which is disposed on the electric heating module 200, and several more probes can be disposed as required, so as to improve the accuracy of temperature detection, and prevent the whole system from malfunctioning due to a failure of one of the probes.

In addition to the abnormal temperature rise electronic control execution module 500, the system also retains the original thermal protection module 300, which is generally composed of the temperature controller 301.

In order to increase the energy disconnected during an abnormal condition, the number of the temperature controllers 301 is two, and the two temperature controllers are respectively connected in series to the two positive and negative terminals of the electric heating module 200, so that even if one of the temperature controllers fails, the other temperature controller can still normally operate, and the success rate of handling the abnormal condition is increased.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although terms such as the control module 100, the MCU control chip 101, the warming rate calculation module 110, the warming abnormality determination module 120, the electric heating module 200, the thermal protection module 300, the thermostat 301, the heating temperature detection module 400, the thermosensitive temperature sensing probe 401, the warming abnormality electric control execution module 500, the relay 501, the power switch 600, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (8)

1. An anti-dry heating control system, comprising a control module (100) and an electric heating module (200) in wired electric connection therewith, characterized in that: the system also comprises a thermal protection module (300) and a heating temperature detection module (400) for detecting the temperature of the electric heating module (200) during heating, wherein the thermal protection module (300) is electrically connected with the control module (100) in a wired mode, and the heating temperature detection module (400) is electrically connected with the control module (100) in a wired mode.

2. The dry burning prevention control system according to claim 1, wherein the control module (100) comprises a temperature rising rate calculating module (110) and a temperature rising abnormality determining module (120) in wired electrical connection with the temperature rising rate calculating module (110), and the temperature rising rate calculating module (110) is in wired electrical connection with the heating temperature detecting module (400).

3. The dry burning prevention control system of claim 2, further comprising an abnormal temperature rise electronic control execution module (500), wherein the control module (100) is electrically connected to the abnormal temperature rise electronic control execution module (500) by wire, and is called by the control module (100) after the abnormal temperature rise judgment module (120) judges the abnormal temperature rise.

4. The anti-dry heating control system according to claim 3, wherein the abnormal temperature rise electronic control execution module (500) comprises at least one relay (501) arranged on a live wire.

5. The dry-burning prevention control system of claim 1, wherein the heating temperature detection module (400) comprises a temperature-sensitive probe (401).

6. The anti-dry heating control system according to claim 1, wherein the thermal protection module (300) comprises at least one temperature controller (301).

7. The dry-heating prevention control system as claimed in claim 6, wherein the number of the temperature controllers (301) is two, and the two temperature controllers are respectively connected in series to the two positive and negative terminals of the electric heating module (200).

8. The utility model provides a drinking bowl, includes the shell body, its characterized in that: the outer shell is internally provided with an anti-dry heating control system as claimed in any one of claims 1 to 6.

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