KR20230119699A - liquid dispenser - Google Patents

Abstract

The present invention provides a liquid dispenser. The liquid distributor includes a liquid distribution pipe and an impeller. The liquid distribution pipe has a liquid inlet, a liquid distribution cavity and a plurality of liquid outlets. Both the liquid inlet and the plurality of liquid outlets communicate with the liquid distribution cavity. The liquid inlet is located at one end of the liquid distribution pipe. A plurality of liquid outlets are located at the other end of the liquid distribution pipe. An impeller is installed within the liquid distribution cavity. The impeller includes a wheel hub and blades installed on the wheel hub. The blade has an elliptical cross-sectional shape perpendicular to the blade extension direction. The technical solution provided in this application can solve the problem of high impeller cost in the prior art.

Description

liquid dispenser

This application claims priority to a patent application filed with the State Intellectual Property Office of China on February 20, 2021, with the application number 202110192112.1 and the title of the invention "Liquid Dispenser".

This application relates to the field of liquid distributor technology, and more particularly to liquid distributors.

A liquid distributor is used to uniformly distribute fluid in a comprehensive piping to a plurality of piping. This is mainly applied to air conditioning piping, and after sufficiently mixing the gas-liquid two-phase refrigerant, the same amount of liquid is uniformly supplied to the evaporator. However, the conventional liquid distributor does not have a good liquid distribution effect and the flow rate in each sub-piping is uneven, which affects the normal use of the air conditioning system.

In the prior art, in order to solve this liquid distribution problem, an impeller is installed in the liquid distributor. The liquid distribution effect is improved by redistributing the liquid introduced into the liquid distributor through the impeller. However, the blades on the conventional impeller have a complicated structure and relatively high design and manufacturing costs.

The present invention provides a liquid distributor to solve the problem of high impeller cost in the prior art.

The present invention provides a liquid dispenser. The liquid distributor includes a liquid distribution pipe and an impeller. The liquid distribution pipe has a liquid inlet, a liquid distribution cavity and a plurality of liquid outlets. Both the liquid inlet and the plurality of liquid outlets communicate with the liquid distribution cavity. The liquid inlet is located at one end of the liquid distribution pipe. A plurality of liquid outlets are located at the other end of the liquid distribution pipe. An impeller is installed within the liquid distribution cavity. The impeller includes a wheel hub and blades installed on the wheel hub. The blade has an elliptical cross-sectional shape perpendicular to the blade extension direction.

In addition, the length ratio of the major axis and the minor axis of the elliptical cross section of the blade is 4:1 to 10:1.

Also, the included angle of the axis of the blade and the wheel hub is 30° to 60°.

Also, the blade and wheel hub are integrally molded structures.

Also, the impeller is made of plastic.

In addition, the blade and the wheel hub are installed separately, and a mounting groove is provided on a side wall of the wheel hub. One end of the blade is bonded or welded into the mounting groove.

Also, the liquid distributor has a plurality of impellers. A plurality of impellers are stacked within the liquid distribution cavity.

In addition, the arrangement direction of the blades of at least one impeller is different from the arrangement direction of the blades of the other impellers.

Also, two adjacent impellers are bonded, welded or threaded.

In addition, the wheel hub has opposed first and second ends. The first stage is installed facing the liquid inlet. The size of the first end gradually increases from the first end to the second end. The second end is bonded, welded or threaded to the liquid distribution pipe.

In applying the technical solution of the present invention, the liquid distributor includes a liquid distribution pipe and an impeller. The impeller includes a wheel hub and blades installed on the wheel hub. By installing the blade in an elliptical cross section, the structure of the blade can be simplified, and design and manufacturing are easy. In this way, by distributing the liquid in the fluid in the liquid distribution pipe through the impeller, the liquid distribution effect can be ensured. It can also lower the cost of designing and manufacturing the blade.

The accompanying drawings, which constitute a part of the present invention, are intended to facilitate a further understanding of the present invention. The illustrative embodiments of the present invention and the description thereof are intended to interpret the present invention, but not to limit the present invention. A description of the accompanying drawings is as follows.
1 is a structural diagram of a liquid distributor according to Embodiment 1 of the present invention.
Figure 2 is a structural diagram of the impeller in Figure 1;
Figure 3 is a cross-sectional view of AA in Figure 2;
Figure 4 is a perspective view of the impeller in Figure 1;
5 is a structural diagram of a liquid distributor according to Embodiment 2 of the present invention.
6 is a structural diagram of a liquid distributor according to Embodiment 3 of the present invention.
Here, the accompanying drawings include the following reference numerals.

The following clearly and completely describes the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. The described embodiments are only some rather than all embodiments of the present invention. One or more illustrative embodiments below are for illustrative purposes only and do not limit the invention and its application or use. All other embodiments obtained by a person skilled in the art without creative work on the basis of the embodiments of the present invention shall fall within the protection scope of the present invention.

As shown in Figs. 1 to 4, Embodiment 1 of the present application provides a liquid distributor. The liquid distributor includes a liquid distribution pipe (10) and an impeller (20). Here, the liquid distribution pipe 10 has a liquid inlet 11 , a liquid distribution cavity 12 and a plurality of liquid outlets 13 . The liquid inlet 11 and the plurality of liquid outlets 13 all communicate with the liquid distribution cavity 12 . The liquid inlet 11 is located at one end of the liquid distribution pipe 10 . A plurality of liquid outlets 13 are located at the other end of the liquid distribution pipe 10 . Impeller 20 is installed within liquid distribution cavity 12 . The impeller 20 includes a wheel hub 21 and blades 22 installed on the wheel hub 21 . The blade 22 has an elliptical cross-sectional shape perpendicular to the extending direction of the blade 22 .

If the cross section of the blade 22 is installed in an elliptical shape through the technical solution provided in this application, the structure of the blade 22 can be simplified and design and manufacturing can be facilitated. By distributing the liquid in the fluid in the liquid distribution pipe 10 through the impeller 20 in this way, the liquid distribution effect can be guaranteed. In addition, the cost of designing and manufacturing the blade 22 can be reduced.

Here, the impeller 20 may be fixed within the liquid distribution pipe 10 or may be rotatably installed within the liquid distribution pipe 10 . In this application, the impeller 20 is fixed within the liquid distribution pipe 10 .

Specifically, the ratio of the major axis length to the minor axis length of the elliptical cross section of the blade 22 is set to 4:1 to 10:1. This ensures liquid distribution uniformity while reducing pressure drop. Specifically, the ratio of the length of the major axis to the length of the minor axis may be set to 6:1 or 8:1.

Here, the blade 22 is installed obliquely on the wheel hub 21 . An included angle exists between the blade 22 and the axis of the wheel hub 21 . If the included angle is too large, the pressure drop becomes large, and if the included angle is too small, the liquid distribution effect is relatively poor. In this application, the included angle between the blade 22 and the axis of the wheel hub 21 is set to 30° to 60°. This not only guarantees the effect of liquid distribution, but also minimizes the pressure drop as much as possible. In this embodiment, the included angle between the blade 22 and the axis of the wheel hub 21 is 45°.

In this embodiment, a plurality of blades 22 are installed on the impeller 20 . The number of blades 22 is three or more. In this application, the number of blades 22 on the impeller 20 is 6 or more.

Here, the blade 22 and the wheel hub 21 may be installed separately or integrally formed. The blade 22 and the wheel hub 21 are installed in an integrally molded structure, so installation is convenient.

Specifically, the impeller 20 is made of plastic. Since the impeller 20 is made of a plastic material, the manufacturing cost is relatively low and the weight of the entire device can be reduced. Specifically, the impeller 20 may be made of polyphenylene sulfide, polyphenylene ether, polyamide, polycarbonate, thermoplastic resin or polyoxymethylene material.

In this embodiment, the blade 22 and the wheel hub 21 are installed separately. Since it is separately manufactured, the structure is simple, and the manufacturing cost of the mold can be lowered. In addition, a mounting groove 211 is provided on the side wall of the wheel hub 21 . One end of the blade 22 is bonded or welded into the mounting groove 211 . The connection between the blade 22 and the wheel hub 21 can be strengthened through the mounting groove 211 . Specifically, the shape of the mounting groove 211 matches the shape of the end of the blade 22 and each other. The blade 22 and the wheel hub 21 are connected by bonding or welding. It is easy to process and at the same time can ensure the strength of the connection between the two.

Here, the wheel hub 21 has a first end and a second end installed oppositely. The first stage is installed facing the liquid inlet (11). The size of the first end gradually increases from the first end to the second end. Accordingly, the impact of the fluid on the wheel hub 21 can be reduced and the fluid can be evenly distributed around the wheel hub 21 . The second end of the wheel hub 21 is bonded, welded or threaded to the liquid distribution pipe 10 . The wheel hub 21 is connected to the liquid distribution pipe 10 in the above manner. This can facilitate a connection between the two. It is also installed to rotate in the liquid distribution pipe relative to the impeller. This application has a simple structure and low cost.

As shown in FIG. 5 , embodiment 2 of the present application provides a liquid distributor. The difference between the liquid distributor and the first embodiment is that the liquid distributor includes a plurality of impellers 20 . A plurality of impellers 20 are stacked within the liquid distribution cavity 12 . Through the above structure, the liquid distribution effect of the liquid distributor can be improved, and the liquid can be evenly distributed to each liquid discharge port 13 .

Here, the arrangement direction of the blades 22 of the plurality of impellers 20 may be the same or different. The arrangement direction of the blades 22 of at least one impeller 20 is different from the arrangement direction of the blades 22 of the other impellers 20 . Accordingly, the liquid distribution uniformity of the device can be further improved. In this embodiment, two impellers 20 are installed in the liquid distributor. The blades 22 of one of the impellers 20 are arranged in a clockwise direction, and the blades 22 of the other impeller 20 are arranged in a counterclockwise direction.

Here, the two adjacent impellers 20 may be connected by bonding, welding or threaded connection. In this embodiment, two adjacent impellers 20 are connected by an adhesive method.

As shown in FIG. 6 , embodiment 3 of the present application provides a liquid distributor. The difference between the liquid distributor and Embodiment 2 is that, in this application, two adjacent impellers 20 are connected by a screw thread connection method. The end of the wheel hub of the first impeller 20 passes through the wheel hub of the second impeller 20 and is threadedly connected to the wheel hub of the second impeller 20 . This structure makes the connection strong and reliable, and improves the strength of the connection between the two impellers 20.

The liquid distributor provided in this application installs a blade with an elliptical cross section. This can simplify the structure and reduce the manufacturing cost while ensuring the liquid distribution effect. Since the impeller material is used as an engineering plastic and the impeller can be manufactured by an injection molding process, the difficulty of molding and the processing cost can be reduced, and the weight of the impeller member can be reduced. In addition, due to the high mechanical lightness and chemical stability of engineering plastics, they have higher reliability and application range in refrigerant systems.

Note that the terminology used herein is only for describing specific embodiments and is not intended to limit the exemplary embodiments of the present application. As used herein, singular expressions are to be understood to include plural expressions, unless the context dictates otherwise. Note also that as used herein, the terms "comprising" and/or "comprising" mean that features, steps, operations, devices, components, and/or combinations thereof are present.

Unless otherwise specified, the relative arrangements of elements and steps, numerical expressions and values described in these embodiments do not limit the scope of the present invention. Also, for convenience of description, it should be noted that the size of each part shown in the accompanying drawings is not drawn to scale. Techniques, methods and devices known to those skilled in the art to which the present invention pertains may not be discussed in detail. However, in appropriate circumstances, the techniques, methods and devices should be considered part of the canonical specification. In all examples shown and discussed herein, any specific value is to be interpreted as illustrative rather than limiting. Thus, different instances of an exemplary embodiment may have different values. Like reference numbers and letters indicate like items in the following accompanying drawings. Therefore, if one item is defined in one accompanying drawing, it should be noted that there is no need to discuss it additionally in the accompanying drawing.

In the description of the present invention, orientations or positional relationships indicated by terms indicating directions such as "front, back, up, down, left, right", "lateral, longitudinal, vertical, horizontal" and "top, bottom" are conventional It is based on the orientation or positional relationship shown in the accompanying drawings. This is only for the purpose of briefly describing the present invention. Therefore, unless stated to the contrary, such directional terms do not indicate or imply that the pointing device or element necessarily has a specific orientation, or is constructed and operated in a specific orientation, and thus can be construed as limiting the protection scope of the present invention. does not exist. The directional terms "inner, outer" mean the inside and outside of the contour relative to each member itself.

For convenience of description, relative terms of space used herein, such as "above", "above", "top surface of", "top surface of", etc., refer to one device or feature shown in the drawings. It can be used to describe the spatial positional relationship of one device or feature to another. Spatial relative terms should be understood to include different orientations of the device during use or operation other than the orientations illustrated in the figures. For example, when a device in the accompanying drawings is inverted, it is described as "above another device or structure" or "above another device or structure" and then "under another device or structure" or "below another device or structure" is defined as Therefore, the exemplary term “above of” may include two orientations of “above of” and “below of”. The device may also be positioned in other ways (rotated 90 degrees or placed in other orientations) and an interpretation corresponding to the relative description of space used herein.

In addition, limiting components using terms such as "first" and "second" is merely to easily distinguish corresponding components. Unless otherwise specified, the above terms have no special meaning and cannot be construed as limiting the protection scope of the present invention.

The above information is only a preferred embodiment of the present invention and therefore does not limit the present invention. Those skilled in the art can modify and change the present invention in various ways. All modifications, equivalent replacements, improvements, etc. made within the scope of the spirit and principles of the present invention shall fall within the protection scope of the present invention.

10 - liquid distribution pipe, 11 - liquid inlet, 12 - liquid distribution cavity, 13 - liquid outlet.
20-impeller, 21-wheel hub, 211-mounting groove, 22-blade.

Claims (10)

In the liquid dispenser,
It includes a liquid distribution pipe 10 and an impeller 20,
The liquid distribution pipe 10 has a liquid inlet 11, a liquid distribution cavity 12 and a plurality of liquid outlets 13, and the liquid inlet 11 and the plurality of liquid outlets 13 are all communicates with the liquid distribution cavity 12, the liquid inlet 11 is located at one end of the liquid distribution pipe 10, and a plurality of liquid outlets 13 are located at the other end of the liquid distribution pipe 10;
The impeller 20 is installed in the liquid distribution cavity 12, the impeller 20 includes a wheel hub 21 and blades 22 installed on the wheel hub 21, and the blades ( 22) is a liquid distributor characterized in that the cross-sectional shape perpendicular to the extension direction of the blade (22) is an ellipse. According to claim 1,
Liquid distributor, characterized in that the length ratio of the major axis and the minor axis of the elliptical cross section of the blade (22) is 4: 1 to 10: 1. According to claim 1,
Liquid distributor, characterized in that the included angle of the axis of the blade (22) and the wheel hub (21) is 30 ° to 60 °. According to claim 1,
The liquid distributor, characterized in that the blade (22) and the wheel hub (21) are integrally molded structure. According to claim 1,
Liquid distributor, characterized in that the impeller (20) is made of plastic. According to claim 5,
The blade 22 and the wheel hub 21 are installed separately, a mounting groove 211 is provided on a sidewall of the wheel hub 21, and one end of the blade 22 is inside the mounting groove 211. A liquid dispenser characterized in that it is bonded or welded. According to claim 1,
The liquid distributor has a plurality of the impellers 20,
A liquid distributor, characterized in that a plurality of said impellers (20) are stacked within said liquid distribution cavity (12). According to claim 7,
Liquid distributor, characterized in that the arrangement direction of the blades (22) of at least one impeller (20) is different from the arrangement direction of the blades (22) of the other impeller (20). According to claim 7,
Liquid distributor, characterized in that two adjacent said impellers (20) are bonded, welded or threaded. According to claim 1,
The wheel hub 21 has a first end and a second end installed oppositely,
The first end is installed facing the liquid inlet 11, and the size of the first end gradually increases from the first end to the second end,
The liquid distributor, characterized in that the second end is connected to the liquid distribution pipe (10) by adhesion, welding or threading.