CN113128135A

CN113128135A - Fluid dispenser design method, design device and electronic equipment

Info

Publication number: CN113128135A
Application number: CN202110322266.8A
Authority: CN
Inventors: 丁爽; 王飞; 张心怡; 崔文娟; 李阳; 许文明
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2021-07-16
Anticipated expiration: 2041-03-25
Also published as: CN113128135B

Abstract

The application relates to the technical field of fluid distributors, and discloses a design method of a fluid distributor, which comprises the following steps: constructing a shunt element model; obtaining the resistance coefficient of each shunt element model under the set refrigeration working condition through simulation; constructing different fluid distributor models; according to the resistance coefficient of the flow dividing element and the fluid distributor model, obtaining the unevenness index of the fluid distributor model through simulation; determining a fluid distributor model with a non-uniformity index less than or equal to a set non-uniformity index as a target fluid distributor model; and outputting the structural parameters of the flow dividing element model corresponding to the target fluid distributor model and the structural parameters of the target fluid distributor model. The fluid simulation technology is utilized to screen out the target shunt element and the fluid distributor which meet the performance requirement, so that the die opening manufacture is avoided, and the die cost loss and the design cycle time loss are avoided. The application also discloses a design device of the fluid distributor and electronic equipment.

Description

Fluid dispenser design method, design device and electronic equipment

Technical Field

The present invention relates to the field of fluid dispensers, and for example, to a method and an apparatus for designing a fluid dispenser, and an electronic device.

Background

At present, in a refrigeration system, except for the condition of small refrigeration (heat) quantity, a heat exchanger generally adopts a multi-path parallel connection mode, so that the refrigerant keeps the optimal flow rate, meanwhile, the pressure drop of the refrigerant side of the heat exchanger is limited within a certain range, and when the refrigerant with uniform gas-liquid mixture is equally distributed to each branch, the heat exchanger can be guaranteed to be efficiently utilized. When the refrigerant can not be uniformly distributed to each branch, different superheat degrees can be generated at the outlets of each branch of each heat exchanger, the branch with less liquid supply enters a superheat zone too early, the coefficient of the heat exchanger in the superheat zone is greatly reduced, and the heat exchange area can not be fully utilized, so that the heat exchange efficiency is reduced. For an air-conditioning refrigeration system, when a heat exchanger is an evaporator of an indoor unit of an air conditioner, the uneven outlet air temperature, the reduction of comfort and the like can be caused.

In view of the above situation, a liquid separator is arranged in front of the heat exchanger to ensure that the refrigerant is uniformly and equally distributed to each branch, and the existing commonly used distributor comprises a venturi-type liquid separator and a pressure drop-type liquid separator, so that the two-phase refrigerant is uniformly mixed, but the price is high; although there are some common distributors, the price is low, but the effect of mixing is not satisfactory, so it is a technical problem to be solved urgently to design a fluid distributor with low cost and good mixing effect.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art: the design of the existing fluid distributor is that the mold opening is carried out without verification and analysis, which brings certain mold opening expense loss and has the problems of long design period and large cost investment.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a design method and a design device of a fluid distributor and electronic equipment, and aims to solve the technical problems of long design period and high cost investment existing in the design of the conventional fluid distributor.

In some embodiments, the fluid distributor comprises a distributor body, a distribution element, a liquid inlet pipe and a plurality of distribution branch pipes, wherein a distribution cavity is arranged in the distributor body, the distribution element is arranged in the distribution cavity and divides the distribution cavity into a front cavity and a rear cavity, a plurality of distribution through holes are distributed in the distribution element, the liquid inlet pipe is communicated with the front cavity, and the distribution branch pipes are communicated with the rear cavity; the design method comprises the following steps:

constructing different shunting element models according to different structural parameters of the shunting element;

under the set refrigeration working condition, obtaining the resistance coefficient of each shunt element model under the set refrigeration working condition through simulation;

constructing different fluid distributor models according to the structural parameters of the flow dividing element models and the fluid distributors;

under a set refrigeration working condition, obtaining the unevenness index of the fluid distributor model through simulation according to the resistance coefficient of the flow dividing element under the set refrigeration working condition and the fluid distributor model;

determining a fluid distributor model with a non-uniformity index less than or equal to a set non-uniformity index as a target fluid distributor model;

and outputting the structural parameters of the flow dividing element model corresponding to the target fluid distributor model and the structural parameters of the target fluid distributor model.

In some embodiments, the apparatus for designing a fluid dispenser comprises a processor and a memory storing program instructions, wherein the processor is configured to execute the method for designing a fluid dispenser when executing the program instructions.

In some embodiments, the electronic device comprises the design device of the fluid dispenser.

The design method, the design device and the electronic equipment of the fluid distributor provided by the embodiment of the disclosure can realize the following technical effects:

according to the design method of the fluid distributor, the structures of the flow dividing element and the fluid distributor are modeled, and simulation calculation is performed by using a fluid simulation technology, so that the flow dividing element and the fluid distributor which meet performance requirements are screened out, die sinking manufacturing is avoided, and die cost loss and design cycle time loss are avoided.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

FIG. 1 is a schematic diagram of a method of designing a fluid dispenser provided in an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of another method of designing a fluid dispenser provided by embodiments of the present disclosure;

FIG. 3 is a schematic diagram illustrating a model of a channel unit in a method for designing a fluid dispenser according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of another orifice unit model in a method of designing a fluid distributor according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of another method of designing a fluid dispenser provided by embodiments of the present disclosure;

FIG. 6 is a schematic structural diagram of a shunt element provided in an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of another shunt element provided in accordance with an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a curved flow dividing element according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural view of another curved shunt element provided in accordance with an embodiment of the present disclosure;

FIG. 10 is a schematic structural view of another cone-shaped shunt element provided by embodiments of the present disclosure;

FIG. 11 is a schematic structural view of a cap-shaped shunt element provided by an embodiment of the present disclosure;

12-a-12-n are schematic structural views of various shunt vias of a shunt element provided by embodiments of the present disclosure;

FIG. 13 is a schematic cross-sectional view of a fluid dispenser provided in accordance with an embodiment of the present disclosure;

FIG. 14 is a cross-sectional schematic view of another fluid dispenser provided in accordance with an embodiment of the present disclosure;

FIG. 15 is a schematic cross-sectional view of another fluid dispenser provided in accordance with an embodiment of the present disclosure;

FIG. 16 is a schematic diagram of another fluid dispenser provided in accordance with embodiments of the present disclosure;

FIG. 17 is a schematic diagram of another fluid dispenser provided in accordance with embodiments of the present disclosure;

FIG. 18 is a schematic structural view of another fluid dispenser provided in accordance with embodiments of the present disclosure;

FIG. 19 is a schematic diagram illustrating a top view of another fluid dispenser provided in accordance with an embodiment of the present disclosure;

FIG. 20 is a schematic top view of another fluid dispenser provided in accordance with embodiments of the present disclosure;

FIG. 21 is a schematic top view of another fluid dispenser provided in accordance with embodiments of the present disclosure;

FIGS. 22-a and 22-b are histograms of fluid simulation results for a fluid dispenser of example 1;

FIGS. 23-a and 23-b are histograms of fluid simulation results for a fluid dispenser of example 2;

fig. 24 is a schematic diagram of a design device of a fluid dispenser provided in an embodiment of the present disclosure.

Reference numerals:

100. a shunt element; 101. an element body; 102. a shunt through hole; 103. assembling a structural member; 104. an installation end; 110. a curved shunt element; 120. a cap-shaped shunt element; 200. a fluid dispenser; 210. a distribution chamber; 211. a front cavity; 212. a rear cavity; 213. a transition chamber; 214. an inlet end; 215. an outlet end; 216. a mounting structure; 220. a liquid inlet pipe; 221. a first tube section; 222. a second tube section; 230. a distribution branch.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

The term "plurality" means two or more unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

Referring to fig. 1, an embodiment of the present disclosure provides a method for designing a fluid distributor, where, referring to fig. 6 to 21, a fluid distributor 200 includes a distributor body, a flow dividing element 100, a fluid inlet pipe 220, and a plurality of distribution branch pipes 230, a distribution chamber 210 is disposed in the distributor body, the flow dividing element 100 is disposed in the distribution chamber 210, and divides the distribution chamber 210 into a front chamber 211 and a rear chamber 212, a plurality of flow dividing through holes 102 are distributed on the flow dividing element 100, the fluid inlet pipe 220 is communicated with the front chamber 211, and the plurality of distribution branch pipes 230 are communicated with the rear chamber 212. A method of designing a fluid dispenser, comprising:

and S110, constructing different shunt element models according to different structural parameters of the shunt element.

In step S110, as shown in fig. 6 to 12, the structural parameters of the shunt element include one or more of the following items: porosity of the shunt element; the shape characteristic parameters of the shunt element and the pore channel characteristic parameters of the shunt through hole. A plurality of different models of the shunt element are constructed by different combinations of structural parameters of the shunt element.

The porosity of the shunting element is related to the channel characteristic parameters of the shunting through hole, wherein the channel characteristic parameters comprise channel shapes, channel characteristic lengths, channel arrangement modes and the like.

The duct shape of the shunt through hole comprises the cross-sectional shape of the duct and the inclination angle of the duct, wherein the cross-sectional shape of the duct comprises a regular geometric shape, an irregular geometric shape or a figure formed by a plurality of geometric shapes. Without limitation, the determination may be made according to requirements. Alternatively, the regular geometric shape includes, but is not limited to, a triangle, a square, a circle, a polygon, etc., wherein the polygon is a regular polygon or a non-regular polygon having a side length greater than or equal to 5. Alternatively, among the plurality of geometric shapes, the plurality of geometric shapes form a pattern having a predetermined pattern in a predetermined layout. Wherein the plurality of geometries may be the same (as shown in fig. 12-j and 12-k) or different. Optionally, the irregular geometry is primarily directed to a body of in situ synthesized porous media material. For example, a porous metal material, such as porous metallic nickel, porous metallic titanium, or the like. Of course irregular geometries can also be obtained by structuring or braiding the filamentary material on a solid body. A flow distribution via 102 having an irregular geometric shape in cross-section is shown in fig. 12-l.

The inclination angle of the porthole refers to the angle of the axis of the shunt hole 102 (i.e. the porthole) relative to the normal of the plane of the shunt hole. Optionally, the included angle is 0 ° to 15 °, the axes of the ducts may be parallel to the normal or may form a certain inclination angle, and the inclination angle is greater than 0 ° and equal to or less than 15 °.

Alternatively, as shown in fig. 7, when the element body 101 of the shunt element is plate-shaped, the surface of the shunt through hole 102 is the plane of the plate-shaped body, and the normal (defined as the first normal m)₁) Is a perpendicular line perpendicular to the plane of the plate-shaped body. That is, the shunt holes 102 are arranged in parallel or obliquely in the axial direction of the plate-like body. Alternatively, as shown in fig. 9, when the device body 101 is a curved shunt device 110 of a curved shunt device, the surface of the shunt hole 102 is a curved surface of the curved body, and the normal (defined as a second normal m)₂) Is a perpendicular line to the tangent plane of the curved surface where the shunt through-hole 102 is located, and the perpendicular line passes through the center of the sphere where the curved surface is located. That is, the shunt holes 102 are arranged in parallel or obliquely along a radial line passing through the center of the sphere of the curved surface. Alternatively, as shown in fig. 10, when the element body 101 of the shunt element is cone-shaped, the surface of the shunt through hole is the curved surface of the frustum-shaped body, and the normal (defined as the third normal m)₃) Is a perpendicular to the tangent plane of the curved surface on which the shunt hole 102 is located, and the perpendicular passes through the axis of the shunt element 100. Optionally, the element body of the shunt element is frustum-shapedThe line comprises a third normal m on the side of the frustum-shaped body₃And a first normal m on the upper bottom surface of the frustum body₁. Alternatively, as shown in fig. 11, the element body 101 is a cap-shaped shunt element 120 having a cap shape, and includes a side surface portion, a curved transition surface portion and a flat portion (i.e. an upper bottom surface), and then the normal includes a third normal m on the side surface portion in the plurality of shunt through holes 102 distributed on the cap-shaped body₃A first normal m on the plane part₁And a second normal m on the transition curved surface portion₂。

The characteristic length of the hole channel of the shunting through hole is a parameter capable of reflecting the shape characteristic of the hole channel, for example, when the hole channel is circular, the characteristic length of the hole channel comprises a radius r; when the pore canal is square, the characteristic length of the pore canal comprises the side length.

The channels of the shunt holes 102 are uniformly distributed on the device body 101 according to a predetermined rule. After the shape and the characteristic length of the pore passage of the shunt through hole are determined, the arrangement mode of the shunt through holes can influence the porosity of the shunt element, so that the arrangement mode of the set rule of the shunt through holes can be determined through the porosity of the shunt element. Alternatively, as shown in fig. 12-a to 12-e, the plurality of shunt holes 102 are arranged in an array. Alternatively, as shown in fig. 12-a to 12-d, the plurality of shunt holes 102 are arranged in a square array. Alternatively, the plurality of shunt holes 102 are arranged in a plurality of concentric circular arrays as shown in fig. 12-e. Alternatively, as shown in fig. 12-f to fig. 12-i, the plurality of shunt holes 102 are arranged in multiple rows, and the shunt holes 102 in adjacent rows are staggered; alternatively, the plurality of shunt holes 102 are arranged in multiple rows, and the shunt holes 102 in adjacent rows are staggered. Alternatively, the plurality of shunt holes 102 are arranged spirally on the element body 101. Alternatively, as shown in fig. 12-m and 12-n in conjunction with fig. 12-i to 12-k, adjacent ones of the plurality of flow distribution channels 102 are co-located. The plurality of shunt channels 102 are mesh openings, and the shunt element 100 forms a mesh shunt element 100. Optionally, the plurality of shunt through holes 102 are arranged in an array, and adjacent shunt through holes 102 share a common edge. Optionally, the plurality of shunt through holes 102 are staggered and adjacent shunt through holes 102 share a common edge. For example, as shown in fig. 12-m, a square shunt element 100 forming a square grid of through holes. As shown in fig. 12-n, the flow dividing through-holes 102 of the regular hexagon form a flow dividing element 100 having honeycomb-shaped through-holes. The plurality of shunt channels in the shunt element 100 may have the same or different pore sizes.

The shape characteristic parameter of the shunt element is a characteristic parameter capable of representing the shape of the body thereof, and optionally, the shape characteristic parameter of the shunt element comprises a characteristic ratio of the height a of the element body 101 to the characteristic length B of the element body 101. The characteristic ratio varies depending on the shape of the shunt element. Alternatively, the characteristic ratio is equal to or greater than 0 and less than or equal to 1.5. That is, when the characteristic ratio is 0, the height a is 0, that is, the element body 101 of the shunt element 100 has a plate shape (as shown in fig. 6). When the characteristic ratio is not 0, the height a is not 0, and the element body 101 of the shunt element 100 has a non-plate shape, and may have a curved surface shape (like a bowl shape, as shown in fig. 8), a cone shape (as shown in fig. 10), a frustum shape, or a cap shape (as shown in fig. 11).

The shape characteristic parameters of the curved shunt element 110 further include a curved radius R1 of the curved body, which reflects the degree of curvature of the curved body. R1 is 10-15. Alternatively, R1 is 12.

For the frustum-shaped flow splitting element or the cap-shaped flow splitting element 120, the shape characteristic parameters further include a projection length of the side portion on a plane perpendicular to the axis of the cap-shaped body, and the projection length may be any value within a range of [0mm, 20mm ]. When the projection length is 0mm, the side surface part is parallel to the axis of the frustum-shaped or cap-shaped shunt element; when the diameter is larger than 0mm, the side surface portion is inclined toward the axis of the frustum-shaped or cap-shaped flow dividing element.

And S120, under the set refrigeration working condition, obtaining the resistance coefficient of each shunt element model under the set refrigeration working condition through simulation according to the shunt element model.

In step S120, a refrigeration condition is set, which includes one or more of a rated refrigeration condition, a normal refrigeration condition and a high-temperature refrigeration condition; and the corresponding characteristic parameters of the refrigerant under the corresponding refrigeration working conditions. The refrigerant characteristic parameters comprise refrigerant type, refrigerant temperature, refrigerant dryness, refrigerant inlet flow parameter and the like. The refrigerant inlet flow rate parameter is not limited to a specific form, and may be a refrigerant inlet speed or a refrigerant mass flow rate. The high-temperature refrigeration working condition refers to a refrigeration working condition with high outdoor temperature, for example, the high-temperature refrigeration working condition (43) with the outdoor temperature reaching 43 ℃ and the high-temperature refrigeration working condition (53) with the outdoor temperature reaching 53 ℃.

The resistance coefficients of the flow dividing elements correspond to the set refrigeration working conditions one by one, one or more resistance systems corresponding to one set refrigeration working condition or multiple set refrigeration working conditions can be obtained according to actual needs, and then the unevenness index of the fluid distributor under the corresponding set refrigeration working condition can be obtained by utilizing fluid simulation.

The simulation process of step S120 is completed by using fluid simulation software. Optionally, the construction of the shunt element model in step S110 is also performed in the fluid simulation software used in step S120, which simplifies the steps of the design method.

In this step S120, the resistance coefficient includes a viscous resistance coefficient D and an inertial resistance coefficient C, where the viscous resistance coefficient D is obtained by the following formula (1):

D＝a₁/2d_h ² (1)

wherein, a₁A value of 129, d_hIs the hydraulic diameter, m.

The inertial resistance system C is obtained by the following formula (3):

C＝a₂·Re^a3/d_h (2)

wherein, the value of a2 is 2.91; the value of a3 is-0.103; d_hIs the hydraulic diameter, m; re is Reynolds number, and Re is rho_m·ν_m·d_h/μ_m，ρ_m、ν_m、μ_mThe density, speed and viscosity of the gas phase and the liquid phase when passing through the flow dividing element are respectively.

In combination with the structural features of the shunt element of the disclosed embodiments, in equations (1) and (2) above, and in the Reynolds number Re, d_hObtained by the following formula (3):

d_h＝p·ds/(1-p) (3)

wherein p is the porosity of the shunt element; ds is the width of the side wall between adjacent flow splitting through holes, e.g. for a wire mesh flow splitting element, ds is the diameter of the filamentary material in m.

And S130, constructing different fluid distributor models according to the flow dividing element models and the structural parameters of the fluid distributors.

In step S130, as shown in fig. 13 to 21, the structural parameters of the fluid distributor include one or more of the following items: the axial length H of the distribution chamber 210; a first ratio of the axial length C of the front cavity 211 to the axial length H of the distribution cavity 210; a second ratio of the mounting height H of the flow diversion element 100 to the axial length H of the distribution chamber 210; the insertion length E of the distribution branch 230 into the distribution chamber 210; the distribution symmetry plane q of the plurality of distribution branch pipes 230 forms an included angle beta with the plane p where the liquid inlet pipe 220 is located; and, the mounting angle γ of the fluid dispenser.

Wherein the axial length C of the front cavity 211 comprises the mounting height h of the shunt element 100 and the height a of the element body 101; the mounting height h of the shunt element 100 is the second axial distance between the mounting end 104 of the shunt element 100 to the inlet end 214 of the distribution chamber 210.

For the curved flow splitting element 110, the structural parameters of the fluid distributor further include: a third ratio of the axial distance D' between the mounting end 104 of the curved flow splitting element 110 to the outlet end 215 of the distribution chamber 210 to the axial length H of the distribution chamber 210.

For the cap-shaped flow-splitting element 120, the structural parameters of the fluid distributor further include: the distance between the side portions of the cap-shaped division body and the inner wall of the distribution chamber 210.

In this step S130, as shown in fig. 17 to 21, the distribution symmetry plane q of the plurality of distribution branch pipes 230 is a symmetry plane passing through the axis of the distribution chamber 210. When the liquid inlet pipe 220 is a straight pipe, the plane p on which the liquid inlet pipe 220 is located can be determined arbitrarily. When the liquid inlet pipe 220 is bent, only one plane p is located on which the bent liquid inlet pipe 220 is located, the bent liquid inlet pipe 220 comprises a first pipe section 221 and a second pipe section 222 which are communicated, and the axial direction of the first pipe section 221 is intersected with the axial direction of the second pipe section 222; the first pipe section 221 communicates with the front cavity 211. Alternatively, when the number of distribution branches 230 is odd, the distribution symmetry plane q of the plurality of distribution branches 230 passes at least the axis of one distribution branch 230. Such as the 0 deg. distribution pattern of 3 distribution branches 230 shown in figure 19. Alternatively, when the number of distribution branches 230 is even, the distribution symmetry plane q of the plurality of distribution branches 230 passes through the axis of 0 or an even number of distribution branches 230. Optionally, the distribution symmetry plane q of the plurality of distribution branches 230 passes through the axis of 0 distribution branches 230, i.e. not through the axis of any one distribution branch 230. As shown in fig. 20, the state where the angle between the plane p and the plane q of the distribution symmetry plane passing through the axes of 0 distribution branch pipes 230 is 0 ° is defined as a 0 ° distribution pattern.

In step S130, as shown in fig. 16, the installation angle γ of the fluid distributor is the included angle γ between the axis of the vertically installed fluid distributor 200 and the vertical direction. The vertical installation degree of the fluid distributor 200 is ensured, and the uniformity and stability of fluid distribution, especially the distribution stability under different refrigeration working conditions, are effectively ensured.

And S140, under the set refrigeration working condition, obtaining the unevenness index of the fluid distributor model through simulation according to the resistance coefficient of the flow dividing element under the set refrigeration working condition and the fluid distributor model.

The set refrigeration condition in this step S140 is a set refrigeration condition corresponding to the resistance system that acquired the flow dividing element model used to construct the fluid distributor model. Therefore, the setting of the cooling condition here can refer to the setting of the cooling condition in step S120, and is not described herein again.

That is, in step S140, the non-uniformity index of the fluid distributor under one refrigeration condition may be obtained, or a plurality of non-uniformity indexes of the fluid distributors corresponding to the plurality of refrigeration conditions may be obtained, and when the obtained non-uniformity index (S) are less than or equal to the set non-uniformity index, the corresponding fluid distributor model may be determined as the target fluid distributor model. The adaptability of the target fluid distributor model to various refrigeration working conditions is improved, and the distribution uniformity is ensured.

Optionally, according to the resistance coefficient of the flow dividing element under the set refrigeration condition and the fluid distributor model, obtaining the refrigerant distribution flow rate corresponding to each of the plurality of distribution branch pipes through simulation; the non-uniformity index epsilon of the fluid distributor model is obtained according to a plurality of refrigerant distribution flow rates. In the present embodiment, the unevenness index ∈ can be obtained by the following formula (4):

ε＝STD(Q₁、Q₂、……，Q_n) (4)

wherein Q is₁、Q₂、……，Q_nThe flow rate is distributed for a plurality of refrigerants, and n is the number of distribution branch pipes.

Optionally, when the set refrigeration condition includes a plurality of set refrigeration conditions, then obtaining a non-uniformity index of the fluid distributor model by simulation, including: under each set refrigeration working condition, obtaining a plurality of unevenness indexes of the fluid distributor model under each set refrigeration working condition through simulation according to the resistance coefficient of the flow dividing element under the corresponding set refrigeration working condition and the fluid distributor model; obtaining an average index of a plurality of non-uniformity indices of a fluid dispenser

The average index

Is determined as the non-uniformity index of the fluid dispenser model. That is, unevenness indexes of the fluid distributors corresponding to the plurality of set refrigeration conditions are obtained, and the plurality of unevenness indexes are averaged. In the present embodiment, the first and second electrodes are,

wherein epsilon₁、ε₂、……，ε_mAnd the number of the types of the set refrigeration working conditions is m.

In some embodiments, the set refrigeration condition includes a nominal refrigeration condition, a normal refrigeration condition, a high temperature refrigeration condition (43), and a high temperature refrigeration condition (53). Then the unevenness index epsilon under rated refrigeration condition can be obtained by the formula (1)₁Non-uniformity under normal refrigeration conditionsIndex ε₂And the unevenness index epsilon under the high-temperature refrigeration working condition (43)₃And the unevenness index epsilon under the high-temperature refrigeration working condition (53)₄. Thus, epsilon₁、ε₂、ε₃And ε₄Respectively, may satisfy a predetermined unevenness index or less, or ε₁、ε₂、ε₃And ε₄The average of (a) satisfies less than or equal to a set unevenness index.

And S150, determining the fluid distributor model with the unevenness index smaller than or equal to the set unevenness index as a target fluid distributor model.

In step S150, the unevenness index is set according to actual requirements. Alternatively, the unevenness index is set to be an unevenness index obtained by a simulation calculation of the existing venturi distributor under the corresponding set refrigeration condition, and can be defined as a female parent unevenness index.

And S160, outputting the structural parameters of the flow dividing element model corresponding to the target fluid distributor model and the structural parameters of the target fluid distributor model.

According to the design method of the fluid distributor, the structures of the flow dividing element and the fluid distributor are modeled, and simulation calculation is performed by using a fluid simulation technology, so that the target flow dividing element and the fluid distributor which meet performance requirements are screened out, die opening manufacturing is avoided, and die cost loss and design cycle time loss are avoided.

In the embodiment of the present disclosure, in step S110, different shunt element models are constructed according to different structural parameters of the shunt element; the method comprises the following steps: correspondingly determining a plurality of parameter values for each structural parameter of the shunt element; and traversing each parameter value of each structural parameter to construct a plurality of shunt element models. In this embodiment, for example, when the number x of terms of the structural parameters of the shunt element and the number y of parameter values taken for each structural parameter are the number y of shunt element models to be constructed^x。

Optionally, while traversing each parameter value of the current item structure parameter, the parameter values of the remaining item structure parameters are fixed. In the present embodiment, for example, when the number of terms x of the structural parameters of the shunt element and the number y of parameter values taken for each structural parameter are the number of shunt element models constructed is x · y.

Of course, the number of the plurality of parameter values determined corresponding to each structural parameter may be the same or different, and is determined according to the characteristics of each structural parameter.

Optionally, determining a plurality of parameter values corresponding to each structural parameter of the shunt element includes: determining the change step length corresponding to each structural parameter and the initial parameter value of each structural parameter; and obtaining a plurality of parameter values corresponding to each structural parameter according to the change step length and the initial parameter value. In this embodiment, the variation step is a fixed value or a variable value. When variable, it can be determined based on the relative relationship between the non-uniformity index of the previous fluid dispenser and the set non-uniformity index.

As can be seen, in step S110, the number of constructed shunting unit models is huge, and there must be shunting unit models that do not meet the requirements, resulting in a large number of invalid construction quantities and simulation calculation quantities, limiting the design efficiency.

In some embodiments, as shown in fig. 2, in step S110, a shunt element model is constructed according to the structural parameters of the shunt element; the method comprises the following steps:

s111, constructing a hole channel unit model of a flow distribution hole channel on the flow distribution element;

in step S111, the construction parameters of the tunnel unit model include: the outer contour of the pore unit, the pore shape and the characteristic length of the pore. The pore channel unit model is a small block with a flow distribution pore channel and has a certain outer contour, and the plurality of pore channel unit models can be spliced to form the flow distribution element according to the set rule arrangement. The shape and the characteristic length of the pore channel are the same as those described in the foregoing step S110, and are not described herein again.

Determining the pore volume on a pore unit model after determining the pore shape and the characteristic length of the pore; the outer contour of the pore unit can determine the unit volume of the pore unit, and the porosity of the pore unit model can be obtained by the ratio of the pore volume to the unit volume. Namely, the porosity structure parameters of the shunting unit are determined while the pore unit model is constructed. In the subsequent construction process of the shunt unit model, the shunt unit model is constructed only according to the shape characteristic parameters of the shunt element, so that the construction difficulty of the shunt element model is greatly reduced, the simulation calculation amount is reduced, and the design efficiency is improved.

Optionally, the outer contour of the duct unit is polygonal; and ensure that a complete flow distribution unit can be obtained by adjacently arranging the plurality of pore channel units. Optionally, the polygon is a regular polygon. Such as square, diamond, hexagon, etc.

Alternatively, as shown in fig. 3, when the duct shape (cross-sectional shape) of the flow dividing duct is a circle, the outer contour of the duct unit is a regular polygon. Such as regular hexagons, squares, diamonds, triangles, etc. The determination may be based on a structural parameter of the shunt unit, for example, based on a porosity of the shunt unit. When the near inscribed circle is obtained on the different pore unit outer contours, the sizes of the inscribed circles are different, the porosity of the obtained pore unit models are different, and then the shunting units with different porosities can be obtained.

Alternatively, as shown in fig. 4, the outer contour of the porthole unit is identical to the cross-sectional shape of the porthole. For example, the outer contour of the duct unit is polygonal. Specifically, the outer contour of the pore unit is square, triangular, rhombic, regular hexagonal or rectangular, and the like.

After the outer contour (including the shape and the size of the outer contour) of the pore unit is determined, pore unit models with different porosities can be constructed by changing the shape and the characteristic length of the pore.

In step S111, the modeling may be performed by modeling software, or may be performed in the fluid simulation software used in step S112.

And S112, under the set refrigeration working condition, obtaining the refrigerant pressure drop of the refrigerant after the refrigerant passes through the pore unit model through simulation.

In step S112, the cooling condition is set in the same manner as in step S120.

And S113, determining the pore unit model with the refrigerant pressure drop less than or equal to the set pressure drop as a target pore unit model. In step S113, the set pressure drop is determined according to the actual requirement. Optionally, the set pressure drop is less than or equal to 5 KPa.

S114, constructing different flow distribution element models according to the target pore passage unit models and the structural parameters of the flow distribution elements.

In step S114, the structural parameters of the shunt element include shape characteristic parameters of the shunt element and a pore channel arrangement manner of the shunt through holes. The structural parameters are the same as those described in step S110, and are not described herein again.

In the embodiment of the disclosure, when a flow distribution element model is constructed, a flow distribution element is split, firstly, a pore channel unit model of one flow distribution through hole is constructed, and fluid simulation is performed on the pore channel unit model to obtain refrigerant pressure drop, so that a target pore channel unit model meeting the pressure drop requirement is screened out; compared with a shunt element with a plurality of shunt channels, the construction and simulation calculation amount of one channel unit model is greatly reduced. When the target pore channel unit model and the structural parameters of the shunt element are used for constructing the shunt element model, the construction parameters related in the construction process only comprise the shape characteristic parameters and the pore channel arrangement mode of the shunt element, the number of terms of the structural parameters is reduced, and the number of finally constructed complete shunt element models is greatly reduced, so that the quantity of constructed models and the quantity of simulation calculation are greatly reduced, and the design efficiency is improved.

In some embodiments, as shown in fig. 5, the design method of the embodiments of the present disclosure further includes:

and S170, when the set refrigeration working conditions comprise a plurality of set refrigeration working conditions, respectively obtaining the unevenness index of the corresponding fluid distributor model under each set refrigeration working condition. Here, the unevenness index is obtained according to the step S140.

Optionally, the set refrigeration condition includes any of a rated refrigeration condition, a normal refrigeration condition, a high-temperature refrigeration condition (43), and a high-temperature refrigeration condition (53).

And S180, obtaining an instability index of the fluid distributor model according to the non-uniformity indexes of the plurality of fluid distributors.

Alternatively, the instability index α is obtained by the following formula (5):

α＝STD(ε₁、ε₂、……，ε_m) (5)

And S190, taking the fluid distributor model with the unevenness index smaller than or equal to the set unevenness index and the instability index smaller than or equal to the set instability index as a target fluid distributor model.

In step S190, the instability index is set according to the actual demand. Alternatively, the set instability index is obtained by calculating the instability index of the existing venturi distributor under various set refrigeration conditions by equation (5), and can be defined as the parent instability index.

In the embodiment of the disclosure, the instability index is introduced to further screen the fluid distributor model, so that the stability of the fluid distributor under different refrigeration working conditions is ensured, and the universality of the fluid distributor is improved.

In the design method of the embodiment of the present disclosure, in step S130, different fluid distributor models are constructed according to the flow dividing element models and the structural parameters of the fluid distributors; the method comprises the following steps:

determining a current shunt element model; determining a plurality of parameter values corresponding to each structural parameter of the fluid distributor; a plurality of fluid dispenser models are constructed by traversing each parameter value of each structural parameter.

To further reduce the amount of modeling and simulation computations, in some embodiments, the design method further comprises:

s210, using a plurality of structural parameters of the fluid distributor and a corresponding parameter value thereof as a first parameter value set, wherein the first parameter value set is used for constructing a fluid distributor model; and (3) taking a plurality of parameter values of one structural parameter as variables and fixing the parameter values of the other structural parameters to be consistent respectively as a plurality of quantitative first parameter value sets to form a first structural parameter combination. The structural parameters as variables are replaced, thereby constructing a plurality of first structural parameter combinations.

S220, combining a first structural parameter into a loop, and executing the following operations:

sorting a plurality of first parameter value sets in a first structure parameter combination of the current cycle according to a set rule in a mode that a plurality of parameter values as variables change according to the set rule;

constructing a fluid distributor model according to the first parameter value set in sequence; and each time a fluid distributor model is constructed, namely the non-uniformity index (and/or instability index) of the fluid distributor model is obtained through simulation by combining the resistance coefficient of the flow dividing element under the corresponding set refrigeration condition (namely step S140 is executed);

stopping the current cycle when the non-uniformity index (and/or, instability index) of the current fluid distributor model is greater than the set non-uniformity index (and/or, set instability index) and the non-uniformity index (and/or, instability index) of the previous fluid distributor model is less than or equal to the set non-uniformity index (and/or, set instability index); and determining a fluid distributor model having a non-uniformity index (and/or instability index) less than or equal to a set non-uniformity index (and/or set instability index) as a target fluid distributor model; and outputting the structural parameters and parameter value sets of the corresponding flow dividing element models of the target fluid distributor model.

That is, according to the variation rule of the non-uniformity index and/or instability index of the fluid distributor corresponding to the parameter value of a certain structural parameter of the fluid distributor in the variation process, whether the parameter value of the structural parameter exceeds the design range is determined, and therefore whether the current cycle is stopped, and the next cycle of the first structural parameter combination is entered. The model construction amount and the simulation calculation amount can be reduced, and the design efficiency is greatly improved.

In some embodiments, the design method further comprises: determining a first parameter value set corresponding to a target fluid distributor model with the minimum unevenness index as a first reference parameter value set; constructing a plurality of fluid distributor models according to the first reference parameter value set and different flow distribution element models; steps S140, S150 and S160 are performed again. According to the method, on the basis of fixing the structural parameters of the fluid distributor model, the structural parameters of the flow dividing elements are designed and screened, and the number of the fluid distributor models is reduced, so that the subsequent simulation calculation amount is reduced, and the design efficiency is further improved.

Optionally, in step S110 or in steps S111 to S114, constructing different shunt element models includes:

the multiple structural parameters of the shunt element and a corresponding parameter value of the multiple structural parameters are used as a second parameter value set, and the second parameter value set is used for constructing a shunt element model; taking a plurality of parameter values of one of the structural parameters as variables, fixing and unifying the other structural parameters as quantitative parameter values respectively to serve as a plurality of quantitative second parameter value sets to form a second structural parameter combination, and correspondingly constructing a group of shunt element models; thereby dividing the different shunt element models constructed into multiple sets of shunt element models.

Optionally, building a plurality of fluid distributor models from the first set of reference parameter values and different shunt element models, and subsequent steps S140, S150 and S160; the method comprises the following steps:

combining a second structural parameter into a loop, and executing the following operations:

s310, sorting a plurality of second parameter value sets in the second structural parameter combination of the current cycle according to a set rule in a mode that a plurality of parameter values serving as variables change according to the set rule; constructing a shunt element model according to the second parameter value set in sequence; and each time a shunting element model is built, namely the resistance coefficient of the shunting element model is obtained through simulation under the set refrigeration working condition, and the fluid distributor is correspondingly built by combining the first reference parameter value set; and obtaining the unevenness index (and/or instability index) of the fluid distributor model through simulation according to the resistance coefficient of the flow dividing element under the corresponding set refrigeration working condition and the correspondingly constructed fluid distributor.

S320, stopping the current cycle when the non-uniformity index (and/or the instability index) of the current fluid distributor model is less than or equal to the set non-uniformity index (and/or the set instability index), and when the non-uniformity index (and/or the instability index) of the current fluid distributor model is greater than the set non-uniformity index (and/or the set instability index). And determining a fluid distributor model having a non-uniformity index (and/or instability index) less than or equal to a set non-uniformity index (and/or set instability index) as a target fluid distributor model; and outputting the second parameter set and the first reference parameter set of the corresponding flow dividing element model of the target fluid distributor model.

In the embodiments of the present disclosure, the design method of the embodiments of the present disclosure is described with reference to the structure of the specific flow dividing element and the construction of the fluid distributor.

Example 1

A fluid dispenser 200 wherein the present flow splitting element 100 disposed therein is a cap flow splitting element 120, wherein a first combination of structural parameters comprises: taking one of the structural parameters, namely the insertion depth of the distribution branch pipe as a variable, and fixing the other structural parameters: the axial length H of the distribution chamber 210 is 30mm and the first ratio is 0.5, i.e. the axial length C (first axial distance) of the front chamber 211 is 15 mm; the second ratio is 0, i.e., the mounting height h (second axial distance) of the shunt element 100 is 0 mm. The number of the distribution branch pipes 230 is 4, and the included angle between the distribution symmetrical plane of the plurality of distribution branch pipes 230 and the plane where the liquid inlet pipe 220 is located is 0 °, and the installation angle of the fluid distributor is 0 °.

Wherein, the height a of the current cap-shaped shunt element 120 is 15mm, the characteristic length B of the port is 16.8mm, that is, the characteristic ratio of the shape characteristic parameter is 0.9; the porosity was 69%.

In a manner that the initial value of the parameter value of the insertion depth is 1mm and the set rule of the fixed variation step length is 1.5mm is varied, that is, the sequence of the parameter values of the insertion depth is 1mm, 2.5mm, 4mm, 5.5mm, 7mm, and the like, step S210 and step S220 are performed to obtain the structural histogram of the unevenness index and the instability index of the fluid simulation as shown in fig. 22-a and b. It can be seen that when the unevenness index and the instability index of the current fluid distributor constructed with the first set of parameters including an insertion depth of 7mm are obtained, they are larger than the set unevenness index and the set instability index, and the unevenness index and the instability index of the previous fluid distributor constructed with the first set of parameters including an insertion depth of 5.5mm are smaller than the set unevenness index and the set instability index; the current cycle is stopped.

Similarly, the structural parameters as variables are replaced to construct a plurality of first structural parameter combinations, and step S210 and step S220 may be performed for each structural parameter combination.

Example 2

On the basis of embodiment 1, the corresponding first parameter value set of the target fluid distributor model with the smallest non-uniformity index is determined as a first reference parameter value set, for example, the first reference parameter value set includes: the axial length H of the distribution chamber 210 is 30mm, the first ratio being 0.5, i.e. the axial length C of the front chamber 211 is 15 mm; the second ratio is 0, that is, the installation height h of the shunt element 100 is 0 mm; the insertion depth of the distribution branch pipe is 2.5 mm; the number of the distribution branch pipes 230 is 4, and the included angle between the distribution symmetrical plane of the distribution branch pipes 230 and the plane where the liquid inlet pipe 220 is located is 0 degree; the installation angle of the fluid distributor is 0 °.

For a cap-shaped shunt element, a second combination of structural parameters comprises: taking porosity as a variable, one of the structural parameters is fixed: the cross section of the pore channel of each shunting through hole is square, the inclination angle of the pore channel is 0 degree, the arrangement mode is a square array, and the adjacent shunting through holes are shared; the characteristic ratio of the shape characteristic parameters of the shunt element is 0.9, the height a of the cap-shaped shunt element 120 is 15mm, and the characteristic length B of the port is 16.8 mm.

Step S310 and step S320 are performed in such a manner that the porosity of the flow dividing element is 50% as an initial value and the set rule of 5% as a fixed step is changed, that is, the sequence of the parameter values of the porosity is 50%, 65%, 70%, 75%, 80%, and so on, to obtain the structural bar graphs of the unevenness index and the instability index of the fluid simulation as shown in fig. 23-a and b. It can be seen that after the unevenness index and the instability index of the current fluid distributor constructed with the flow dividing element constructed with the second parameter set including a porosity of 80% are obtained, they are greater than the set unevenness index and the set instability index, and the unevenness index and the instability index of the previous fluid distributor constructed with the flow dividing element constructed with the second parameter set including a porosity of 75% are less than the set unevenness index and the set instability index; the current cycle is stopped.

Similarly, the structural parameters as variables are replaced to construct a plurality of second structural parameter combinations, and step S310 and step S320 may be performed for each second structural parameter combination.

The method of constructing the cap-shaped shunt element used in embodiments 1 and 2 is not limited, and may be one of the following three molding methods: a plurality of shunt through holes 102 are formed in the solid body; alternatively, the shunt element 100 is woven from a filamentary material; alternatively, the shunt element 100 is constructed from a porous media material. Wherein, the material of the filiform material comprises metal, fiber or plastic. For example a wire mesh shunt element obtained by wire weaving. Optionally, the mesh number of the wire mesh shunt element 100 is 80 mesh, 90 mesh, 100 mesh, or the like, and the wire diameter is 0.08mm, 0.1mm, or 0.12 mm.

Specifically, the following four wire mesh shunt elements were obtained by wire weaving, and the physical parameters are shown in table 1 below:

numbering	Number of meshes	Wire diameter	Porosity of the material	Effective area
					Wire mesh I	100 mesh	0.1mm	69％	37％
Wire mesh II	100 mesh	0.08mm	75％	49％
					Wire mesh III	80 mesh	0.12mm	70％	44％
Wire mesh IV	80 mesh	0.1mm	75％	43％
					Comparative wire mesh	60 mesh	0.1mm	80％	52％

Wherein, the porosity is calculated by the following formula: 1-pi ds N/(0.0254 x 4); wherein ds is the diameter of the wire, m; n is the mesh number. Wherein ds is the width of the sidewall between adjacent shunt holes.

In summary, with the design method of the fluid distributor according to the embodiment of the present disclosure, the structural parameters of the flow dividing element and the fluid distributor are respectively designed and obtained as follows:

the porosity of the shunt element is 60-78%;

the shape characteristic parameter of the shunt element, i.e., the characteristic ratio of the height a of the element body 101 of the shunt element 100 to the characteristic length B of the element body 101, is equal to or greater than 0 and less than or equal to 1.5. Wherein, the first characteristic ratio of the height A1 of the curved body to the characteristic length B1 of the port thereof is equal to or more than 0.1 and less than or equal to 0.4, the height A1 of the curved body is equal to or more than 2mm and less than or equal to 50mm, and the radius R1 of the curved body is 10-15. The second characteristic ratio of the height A2 of the cap-shaped body to the characteristic length B2 of the port of the cap-shaped body is equal to or more than 0.7 and less than or equal to 1.5, the height A2 of the cap-shaped body is equal to or more than 5mm and less than or equal to 60mm, and the curved surface radius R2 of the transition curved surface part is 2-15.

The included angle between the axis of the shunt through hole 102 and the normal of the surface where the shunt through hole is located is 0-15 lines;

the axial length H of the fluid distributor is not less than 30 mm;

the first ratio of the axial length C of the front chamber 211 to the axial length H of the distribution chamber 210 is not lower than 0.3; the axial length C of the front cavity 211 is equal to or greater than 5mm and less than or equal to 60 mm. Wherein, the first ratio of the curved shunt element is equal to or more than 0.3 and less than or equal to 0.7; the second ratio is equal to or greater than 0.15 and less than or equal to 0.3. The installation height h of the curved shunt element 110 is equal to or greater than 5mm and less than or equal to 10 mm. A third ratio of the axial distance D' between the mounting end 104 of the curved flow splitting element 110 to the outlet end 215 of the distribution chamber 210 to the axial length H of the distribution chamber 210 is equal to or greater than 0.4 and less than or equal to 0.7.

The first ratio of the cap-shaped shunt element is equal to or greater than 0.3 and less than or equal to 0.93. The second ratio is equal to or greater than 0 and less than or equal to 0.2. The mounting height h of the cap-shaped shunt element 120 is equal to or greater than 0mm and less than or equal to 6 mm. The cap-shaped body includes side portions having a distance from the inner wall of the distribution chamber 210 equal to or greater than 1mm and less than or equal to 20 mm.

The insertion length E of the distribution branch 230 does not exceed 6 mm.

The distribution symmetry plane q of the plurality of distribution branch pipes 230 and the plane p where the liquid inlet pipe 220 is located form an included angle beta of 0-45 degrees.

The fluid distributor 200 is vertically installed, and the included angle gamma between the axis of the fluid distributor 200 and the vertical direction is 0-15 DEG

As shown in fig. 24, an embodiment of the present disclosure provides a fluid dispenser design apparatus, which includes a processor (processor)400 and a memory (memory) 401. Optionally, the apparatus may also include a Communication Interface 402 and a bus 403. The processor 400, the communication interface 402, and the memory 401 may communicate with each other through a bus 403. Communication interface 402 may be used for information transfer. The processor 400 may invoke logic instructions in the memory 401 to perform the design method of the fluid dispenser of the above-described embodiments.

In addition, the logic instructions in the memory 401 may be implemented in the form of software functional units and may be stored in a computer readable storage medium when the logic instructions are sold or used as independent products.

The memory 401 is a computer-readable storage medium and can be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 400 executes the functional application and data processing by executing the program instructions/modules stored in the memory 401, namely, the design method of the fluid dispenser in the above embodiment is realized.

The memory 401 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. Further, the memory 401 may include a high-speed random access memory, and may also include a nonvolatile memory.

The disclosed embodiments provide a product (e.g., a computer, a mobile phone, etc.) including the above-described fluid dispenser design.

Embodiments of the present disclosure provide a computer-readable storage medium storing computer-executable instructions configured to perform the method of designing a fluid dispenser described above.

Embodiments of the present disclosure provide a computer program product comprising a computer program stored on a computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the method of designing a fluid dispenser as described above.

The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.

The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.

Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Claims

1. The design method of the fluid distributor is characterized in that the fluid distributor comprises a distributor body, a distribution element, a liquid inlet pipe and a plurality of distribution branch pipes, wherein a distribution cavity is arranged in the distributor body, the distribution element is arranged in the distribution cavity and divides the distribution cavity into a front cavity and a rear cavity, a plurality of distribution through holes are distributed in the distribution element, the liquid inlet pipe is communicated with the front cavity, and the distribution branch pipes are communicated with the rear cavity; the design method comprises the following steps:

under a set refrigeration working condition, obtaining the unevenness index of the fluid distributor model through simulation according to the resistance coefficient of the flow dividing element model under the set refrigeration working condition and the fluid distributor model;

determining a fluid distributor model for which the non-uniformity index is less than or equal to a set non-uniformity index as a target fluid distributor model;

2. The design method according to claim 1, wherein a shunt element model is constructed according to structural parameters of the shunt element; the method comprises the following steps:

constructing a pore channel unit model of one shunt through hole on the shunt element;

under the set refrigeration working condition, obtaining the refrigerant pressure drop of the refrigerant after the refrigerant passes through the pore unit model through simulation;

determining the pore unit model with the refrigerant pressure drop less than or equal to the set pressure drop as a target pore unit model;

and constructing a shunting element model according to the target pore passage unit model and the structural parameters of the shunting element.

3. The design method of claim 1, wherein the non-uniformity index of the flow distributor model is obtained through simulation according to the resistance coefficient of the flow dividing element under the set refrigeration condition and the flow distributor model; the method comprises the following steps:

according to the resistance coefficient of the shunting element under the set refrigeration working condition and the fluid distributor model, the refrigerant shunting flow in each distribution branch pipe is obtained through simulation;

and obtaining the unevenness index of the flow distributor model according to a plurality of refrigerant flow division flows.

4. The design method according to claim 3, wherein the non-uniformity index of the fluid distributor model is obtained by the following formula:

ε＝STD(Q₁、Q₂、……，Q_n)

wherein Q is₁、Q₂、……，Q_nThe flow rate is divided for a plurality of refrigerants, and n is the number of distribution branch pipes.

5. The design method according to claim 3 or 4, wherein the set refrigeration condition comprises a plurality of set refrigeration conditions, and the obtaining of the unevenness index of the fluid distributor model by simulation comprises:

under each set refrigeration working condition, obtaining a plurality of unevenness indexes of the fluid distributor model under each set refrigeration working condition through simulation according to the resistance coefficient of the flow dividing element under the corresponding set refrigeration working condition and the fluid distributor model;

obtaining an average index of a plurality of non-uniformity indices for the model of the fluid distributor; determining the average index as a non-uniformity index for the model of the fluid dispenser.

6. The design method according to any one of claims 1 to 4, further comprising:

when the set refrigeration working condition comprises multiple set refrigeration working conditions, respectively obtaining the unevenness index of the fluid distributor model corresponding to each set refrigeration working condition;

obtaining an instability index of the fluid distributor model according to the non-uniformity indexes of the plurality of fluid distributors;

and taking the fluid distributor model with the unevenness index smaller than or equal to a set unevenness index and the instability index smaller than or equal to a set instability index as a target fluid distributor model.

7. The design method of claim 6, wherein the instability index of the fluid distributor model is obtained by the following formula:

α＝STD(ε₁、ε₂、……，ε_n)

wherein epsilon₁、ε₂、……，ε_nAnd the corresponding unevenness indexes are set for various refrigeration working conditions.

8. The design method according to any one of claims 1 to 4,

the structural parameters of the shunt element include one or any more of the following:

a porosity of the flow diversion element;

a shape characteristic parameter of the shunt element; and the combination of (a) and (b),

the channel characteristic parameters of the shunt through holes;

the structural parameters of the fluid distributor include one or more of the following items:

an axial length of the dispensing chamber;

a first ratio of an axial length of the front chamber to an axial length of the distribution chamber;

a second ratio of the mounting height of the flow diversion element to the axial length of the distribution chamber;

the insertion length of the distribution branch;

the distribution symmetry plane of the plurality of distribution branch pipes forms an included angle with the plane where the liquid inlet pipe is located; and the combination of (a) and (b),

the mounting angle of the fluid distributor.

9. A fluid dispenser design apparatus comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the fluid dispenser design method of any one of claims 1 to 8 when executing the program instructions.

10. An electronic apparatus comprising the fluid dispenser designing apparatus according to claim 9.