Pump body for improving water spraying effect and cold drink machine

Abstract

The pump body comprises a shell, a water inlet is formed in the center of the top face of the shell, a water outlet hole is formed in the top face of the shell, the bottom face of the shell is closed, a circle of flow guide wall is arranged on the side face of the shell, an impeller cavity is formed between the flow guide wall and the top face and the bottom face, and an impeller is arranged in the impeller cavity. The flow guide wall is in an involute shape, the starting point and the ending point of the flow guide wall are located on the two sides of the water outlet hole respectively, and the extension line of the starting point of the flow guide wall is tangent to the edge, facing the center of the impeller, of the water outlet hole. According to the utility model, the energy loss is extremely small in the beverage spraying process, so that the pump body performance of the whole pump body is improved, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of snow melting machines, in particular to a pump body and a cold drink machine for improving the water spraying effect. Background Art

[0002] The structure of a conventional spray-type cold drink machine mainly includes a beverage barrel. A pump body is installed at the bottom of the beverage barrel. The function of the pump body is to push the beverage cooled by the evaporator through the rotating impeller, accelerate it in the pump body flow channel, and then spray it out through the water outlet of the pump body. There is a conduit connected to the water outlet, which guides the water flow to the barrel cover. The water flows through the barrel cover and the inner wall of the beverage barrel to form a waterfall effect.

[0003] The pump body of the existing cold drink machine allows the beverage to flow along the channel to the water outlet. A baffle is set at the water outlet to force the water flow to turn 90 degrees and spray upward. This structure has the following problems: 1. There is energy loss in the forced turning process. According to the principle of conservation of mass flow, the speed and pressure of the upward spraying water will decrease; 2. The forced turning process, because it is in the vertical direction, will cause a certain amount of backflow, reducing the subsequent water flow and pressure, and ultimately affecting the water spraying effect. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the above-mentioned prior art and to provide a pump body and a cold drink machine that can improve the water spraying effect.

[0005] The specific solution of the utility model is: a pump body for improving the water spray effect, including an outer shell, a water inlet is provided at the center of the top surface of the outer shell, a water outlet is provided on the top surface of the outer shell, the bottom surface of the outer shell is closed, and a circle of guide walls are provided on the side of the outer shell, an impeller cavity is formed between the guide wall and the top surface and the bottom surface, and an impeller is installed in the impeller cavity; the guide wall is in an involute shape, the starting point and the end point of the guide wall are respectively located on both sides of the water outlet, and the extension line of the starting point of the guide wall is tangent to the edge of the water outlet facing the center of the impeller.

[0006] Furthermore, the angle between the line connecting the center of the impeller to the starting point of the guide wall and the line connecting the center of the impeller to the center of the water outlet is β, and 10°≤β≤15°.

[0007] Furthermore, the guide wall is composed of two arc lines, and the radius of the arc at the starting section is smaller than the radius of the arc at the ending section.

[0008] Furthermore, the utility model also provides a cold drink machine, including a beverage barrel, a barrel cover is installed on the top of the beverage barrel, the above-mentioned pump body is installed on the bottom of the beverage barrel, a diversion pipe is installed inside the beverage barrel, the inlet of the diversion pipe is connected to the water outlet hole of the pump body, the outlet of the diversion pipe extends upward to the barrel cover, and a return water port is provided at the bottom of the beverage barrel, which is connected to the water inlet of the pump body.

[0009] Compared with the prior art, the utility model has the following advantages: the energy loss of the beverage during the spraying process is extremely small, thereby improving the pump performance of the entire pump body and enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional schematic diagram of the pump housing of the utility model;

[0011] Figure 2 This is a three-dimensional schematic diagram of the pump housing of the utility model from another perspective;

[0012] Figure 3 yes Figure 1 Front view of

[0013] Figure 4 yes Figure 2 Front view of

[0014] Figure 5 This is a schematic structural diagram of the utility model cold drink machine;

[0015] In the figure: 1. beverage barrel; 2. barrel cover; 3. conduit; 4. pump body; 41. outer shell; 42. water inlet; 43. water outlet; 44. guide wall. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0017] See also Figure 1-5 This embodiment is a pump body 4 for enhancing the water spray effect, comprising a housing 41. A water inlet 42 is provided at the center of the top surface of the housing 41. A water outlet 43 is provided on the top surface of the housing 41. The bottom surface of the housing 41 is closed. A circle of guide walls 44 are provided on the side of the housing 41. The guide walls 44, the top surface, and the bottom surface form an impeller cavity, which contains an impeller. The guide walls 44 are in the shape of an involute, with the starting point and end point of the guide walls 44 located on either side of the water outlet 43. The extension of the starting point of the guide walls 44 is tangent to the edge of the water outlet 43 that faces the center of the impeller. Furthermore, the angle β between the line connecting the center of the impeller to the starting point of the guide wall 44 and the line connecting the center of the impeller to the center of the water outlet 43 is 10°≤β≤15°.

[0018] Furthermore, the guide wall 44 is composed of two arc segments, and the radius of the arc at the starting segment is smaller than the radius of the arc at the ending segment.

[0019] Furthermore, this embodiment also provides a cold drink machine, including a beverage barrel 1, a barrel cover 2 is installed on the top of the beverage barrel 1, the above-mentioned pump body 4 is installed on the bottom of the beverage barrel 1, a diversion pipe is installed inside the beverage barrel 1, the inlet of the diversion pipe is connected to the water outlet hole 43 of the pump body 4, and the outlet of the diversion pipe extends upward to the barrel cover 2. A return water port is provided at the bottom of the beverage barrel 1, and the return water port is connected to the water inlet 42 of the pump body 4.

[0020] In this embodiment, the water outlet 43 is fully open without a baffle. Compared to the water outlet 43 of a conventional cold beverage dispenser pump body 4, the diameter of the water outlet 43 is increased, thereby increasing the flow area for the beverage. Furthermore, the present invention reduces flow resistance by designing the shape of the guide wall 44 and the relative positioning of its starting and ending points with respect to the water outlet 43, thereby lowering kinetic energy loss during beverage ejection. This improves the efficiency of the pump body 4, enhances the ejection effect of the conduit 3, and enhances the user experience.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pump body for improving water spraying effect, characterized by: The utility model comprises an outer shell, a water inlet is provided at the center of the top surface of the outer shell, a water outlet is provided at the top surface of the outer shell, the bottom surface of the outer shell is closed, a circle of guide walls are provided on the side surface of the outer shell, an impeller cavity is formed between the guide wall and the top surface and the bottom surface, and an impeller is installed in the impeller cavity; the guide wall is in an involute shape, the starting point and the end point of the guide wall are respectively located on both sides of the water outlet, and the extension line of the starting point of the guide wall is tangent to the edge of the water outlet facing the center of the impeller.

2. A pump body for improving water spraying effect according to claim 1, characterized in that: The angle between the line connecting the center of the impeller to the starting point of the guide wall and the line connecting the center of the impeller to the center of the water outlet is β, and 10°≤β≤15°.

3. A pump body for improving water spraying effect according to claim 1, characterized in that: The guide wall is composed of two arc lines, and the radius of the arc at the starting section is smaller than the radius of the arc at the ending section.

4. A cold drink machine, comprising a beverage barrel with a barrel cover mounted on the top of the beverage barrel, characterized in that: The bottom of the beverage barrel is equipped with a pump body according to any one of claims 1 to 3, and a diversion pipe is installed inside the beverage barrel. The inlet of the diversion pipe is connected to the water outlet of the pump body, and the outlet of the diversion pipe extends upward to the barrel cover. A return water port is provided at the bottom of the beverage barrel, and the return water port is connected to the water inlet of the pump body.

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