Pressure type liquid speed heater

Abstract

A pressure type liquid quick heater comprises a water feeding tube, a water draining tube and a heating tube, wherein the heating tube is a coating type electric heating glass tube, and is arranged in a shell of a heating element; electrode clamps at two ends of the heating tube extend out from electrode grooves of inner end caps; the water feeding tube is communicated with a preheating tube through a silica gel sealing ring; the outer wall of the preheating tube is in contact with the shell of the heating element; the preheating tube is communicated with the heating tube via the silica gel sealing ring and the lower end cap; and the top of the heating tube is communicated with the water draining tube via an upper end cap. By using the pressure type liquid quick heater, a heating element subassembly can work under the pressure condition that the water pressure is 7-15 kilogram force, can bear the test of pressure of 40 kilogram force, can be quickly assembled or disassembled, and is convenient to mount and replace. Double temperature controllers are arranged on the shell of the heating element, abnormal temperature rising of the heating tube can be rapidly detected, the power supply can be automatically cut off, and abnormal dry burning of the heating tube is prevented.

Description

technical field [0001] The invention relates to a heating device, in particular to a pressure type liquid rapid heater. Background technique [0002] The heating element assembly of the coffee machine is one of the key components of the coffee machine. In order to improve the taste of coffee, maintain the activity of the water body, and make the coffee powder fully dissolve in hot water, the most suitable water temperature for brewing coffee is 83-88 degrees. air, and maintain a pressure of 7-17 kgf. [0003] There are usually two types of heating components for existing fast-heating coffee machines: one uses a spiral heating tube structure, as described in Patent No. CN201320153818.8 "Heating Unit for Coffee Machines", which includes a spiral heating tube And a water pipe that coils outside the heating pipe and spirals up with the heating pipe. Both the water pipe and the heating pipe are die-cast in the aluminum shell. There is a blind hole on the surface of the aluminum...

AI Technical Summary

Problems solved by technology

[0005] Existing heating element components of coffee machines all use ordinary aluminum heating tubes, which are bulky and costly

Hot water is in contact with aluminum pipes, which is prone to scale, and long-term drinking of water precipitated by aluminum ions is not good for health

The above-mentioned coffee machine adopts a heating element with slow heating speed, long preheating time and thermal inertia, and the temperature sensing drift of the temperature sensor is large. Aging of internal components

[0006] The heating components of the above-mentioned coffee machines all work under normal pressure, and the water outlet is hot water under normal pressure. When brewing coffee, the coffee powder is not fully dissolved, and the taste of the coffee is not good.

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