Method for detecting starved feeding alarming of ice cream machine

Abstract

Disclosed is a method for detecting a starved feeding alarming of an ice cream machine, which is capable of improving detecting accuracy of the starved feeding alarming and reducing false alarm rate. The method includes the following steps : (1), after starting up, detecting a rotating speed of a stirring mechanism of the ice cream machine and the temperature of an evaporating cylinder, when the detected rotating speed during starting up is in correspondence with an initial forming proportion A and the temperature is above a setting temperature value F in initial forming, recording a preforming temperature X when the ice cream reaches a preforming proportion B, and being saved in a system, and being covered when restarting and the requirements are met; (2), when the rotating speed is in correspondence with the forming proportion, forming and shutting down and no alarming; when the rotating speed can not reach the forming proportion and the temperature measuring value is maintained fora period of time T1 and below alarming threshold value X-N1, sending a starved feeding alarming signal and maintaining alarming state for a period of time T2; (3), automatically shutting down and entering into standby when the temperature value is always below the shutting down setting temperature X-N2 during the period of time T2 and the rotating speed can not reach the forming proportion after the starved feeding alarming signal is sent out.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to the technical field of refrigeration and electronic control of commercial or household ice cream machines. Background technique [0002] At present, ice cream machines usually add ice cream slurry to the material tank when they start working. During the working process, they can choose to add material according to the feeling of the output, or open the material tank cover to see if the material tank is short of material and then choose to add material. If the lack of material is not found in time, the machine will have problems such as freezing cylinder, scraping cylinder and severe noise when the machine is running under refrigeration, which will seriously damage the mixing system of the machine and shorten the service life of the machine. In addition, if the lack of material is not found in time, when the ice cream needs to be sold, the ice cream cannot be produced in...

AI Technical Summary

Problems solved by technology

The disadvantages are: 1) When the ice cream slurry is relatively viscous, the sensing device will malfunction or not operate; 2) The sensing device is added, which increases the cost of the machine; 3) Since the sensing device is set in the material tank, the machine's cleaning difficulty

The disadvantages are: 1) When the voltage changes, such as when the machine is relocated, the speed value will shift, which will affect the detection accuracy of the lack of material; 2) When using different proportions of ice cream slurry, due to the different forming resistance, The speed value will also be different when there is a lack of material, so the accuracy of the alarm for lack of material will also be affected

Chinese patent application 200910038473X discloses a method of controlling the ice cream machine to send out a lack of material signal by detecting the rotational speed, but it is found in practice that the ice cream machine that uses this method to detect material shortage and alarm the working state is unstable and the false alarm rate is high

The Taylor company in the United States has also applied for a patent for controlling the alarm of ice cream machines by detecting the rotational speed, but the products that the company actually circulates in the market all use the sensing of the liquid level in the material tank to control the alarm of lack of material, which is also based on stability. consider