Automatic air venting and pressure relieving device of coffee machine
A technology of automatic exhaust and pressure relief device, applied in beverage preparation devices, kitchen utensils, home utensils, etc., can solve the problems of low product qualification rate and relatively high requirements for external factors, achieve a high degree of automation, improve control accuracy, structure Simple and reasonable effect
Active Publication Date: 2011-05-11
GUANGDONG XINBAO ELECTRICAL APPLIANCES HLDG CO LTD
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Problems solved by technology
However, this structure has more accurate requirements on the weight of the return valve needle itself and higher requirements on external factors, so it can only be applied to low-pressure water pump machines, and the pass rate of the product is low, making it difficult to meet the requirements of users.
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[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0018] see Figure 1-Figure 5 , The automatic exhaust and pressure relief device of the coffee machine includes a return valve body 1 connected with a heating component, the heating component is a heating pot. The outer wall of the return valve body 1 extends out a limiting boss corresponding to the position of the heating pot. A sealing ring 2 is arranged between the heating pot and the returning valve body 1. The sealing ring 2 is crimped and fixed on the limiting boss. The return valve body 1 It is sealed and connected with the heating pot through the sealing ring 2.
[0019] The backflow valve body 1 is provided with a pressure relief channel and a water inlet 1.2 and a water outlet 1.1 connected to the pressure relief channel, and the water inlet 1.2 is provided with a backflow valve plug 5 . The return valve plug 5 is socketed with the water inl...
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An automatic air venting and pressure relieving device of a coffee machine comprises a return valve body connected with a heating component, wherein a pressure relieving passage as well as a water outlet and a water inlet which are communicated with the pressure relieving passage are formed on the return valve body, and a return valve plug is arranged at the water inlet; a return valve core is arranged above the return valve plug; the return valve core is connected with the pressure relieving passage in a sliding manner; and a circulation clearance is reserved between the outer wall of the return valve core and the pressure relieving passage. A step hole communicated with the water inlet and the water outlet is formed in the pressure relieving passage, and a circular conical surface matched with the top part of the return valve core and corresponding to the shape of the step hole is arranged at the top part of the return valve core; the step hole is connected with the circular conical surface of the return valve core in a sealed manner; and the diameter of the step hole is smaller than the diameters of the water inlet and the water outlet. The automatic air venting and pressure relieving device of the coffee machine has the characteristics of simple and reasonable structure, simpleness and convenience for operation, high automation degree and long service life; and under the push of flow water and the elastic force of a spring, the return valve core is enabled to slide up and down to open and close the pressure relieving passage, so as to achieve the purposes of automatic air venting and pressure relieving finally.
Description
technical field [0001] The invention relates to a coffee machine, in particular to an automatic exhaust and pressure relief device for the coffee machine. Background technique [0002] Chinese Patent Document No. CN201053521Y disclosed an automatic pressure relief valve on April 30, 2008, which is characterized in that: the water inlet is arranged at one end of the valve chamber, and the water outlet is arranged at the other end of the valve chamber opposite to the water inlet; When the pressure water pushes up the return valve needle, the upper end of the valve core plugs the valve cavity in the valve body, thereby closing the return channel; when the water pressure drops, the return valve core falls down to open the return flow channel by using the weight of the return valve core itself. Channel, the distance from the upper end of the valve plug to the channel opening is greater than the length of the valve core. It is said that its structure is simple, low cost, suitable...
Claims
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IPC IPC(8): A47J31/44
Inventor 郭建刚林锦如
Owner GUANGDONG XINBAO ELECTRICAL APPLIANCES HLDG CO LTD