CN110431364B

CN110431364B - Fluid distributor

Info

Publication number: CN110431364B
Application number: CN201780088711.0A
Authority: CN
Inventors: 吴在允
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-03-20
Filing date: 2017-12-28
Publication date: 2021-05-28
Anticipated expiration: 2037-12-28
Also published as: KR101824356B1; WO2018174384A1; CN110431364A

Abstract

The invention relates to a fluid distributor, which prevents welding liquid from flowing into a central hole of a distribution guider in the process of welding and combining a distribution hole of the distribution guider with a distribution pipe, thereby preventing welding material waste and central hole function from being low, and preventing the problem that fluid leakage can occur through a gap or a fine Crack (Crack) between a fluid distributor body and the distribution guider. The gist of the present invention is that an introduction channel (11) for introducing a fluid is formed on one side of a body (10), a distribution guide (1) is incorporated in the opposite side thereof, the distribution guide (1) distributes the fluid introduced from the introduction channel (11) to distribution pipes (12, 12 ') coupled to distribution holes (4, 4'), and the distribution guide (1) forms a hole (5) at the center outside a distribution portion (3), characterized by comprising a prevention member (6) for closing the center hole (5) of the distribution guide (1) outside the distribution guide (1) incorporated in the fluid distributor body (10).

Description

Fluid distributor

Technical Field

The present invention relates to a fluid dispenser, and more particularly, to a fluid dispenser which prevents a welding liquid from flowing into a center hole of a dispensing guide during welding of a dispensing hole of the dispensing guide to the dispensing pipe, thereby preventing waste of welding materials and deterioration of the function of the center hole, and preventing fluid leakage which may occur through a gap or a fine Crack (Crack) between a fluid dispenser body and the dispensing guide.

Background

In general, a refrigeration structure of an air conditioner that sucks in hot air and exchanges heat with a low-temperature refrigerant is configured by a compressor that compresses the refrigerant in a high-temperature and high-pressure gas state, a condenser that condenses into a liquid state by heat radiation, a fluid distributor that distributes the liquid or gaseous refrigerant flowing from the condenser to an evaporator via a distribution pipe, and the like.

The fluid distributor that distributes the liquid-phase and gaseous-phase refrigerant (hereinafter, referred to as fluid) distributes the fluid introduced from the introduction passage through a plurality of distribution pipes, thereby resulting in development of improving uniform and efficient distribution performance, and looking at prior art for these fluid distributors, as in the later-described reference.

Reference 1 discloses a dispenser which is provided with a dispensing part forming a conical dispensing protrusion at the center of a dispensing part receiving a fluid from an introduction part and dispensing, so that the distribution of the fluid introduced from the introduction part is more uniform.

The conical distribution protrusion at the center of the distribution channel of the head of the fluid distributor disclosed in the reference 1 is configured to uniformly distribute the fluid flowing in from the introduction channel, and the flow area of the conical distribution protrusion having a gradually increasing diameter toward the distribution part is gradually decreased, thereby inducing more uniform distribution of the fluid flowing in the mixing part at the distribution part.

However, the fluid distributor distributes the fluid introduced from the radially arranged distribution parts around the central distribution protrusion on the cylinder to induce uniform distribution, and the outer side of the mixing part (inner diameter surface of the body) of the fluid distributor has no means for guiding the fluid to flow smoothly, so that it is difficult to expect improvement of distribution performance.

That is, the fluid dispenser induces uniform distribution of fluid in the center through the distribution protrusion in the center of the distribution channel, but there is no means for inducing uniform distribution of fluid by assisting distribution of fluid in the side surface of the distribution channel (inner diameter surface of the body) (the size of the flow cross-sectional area flowing to the distribution portion is reduced more than the center having the distribution protrusion), and therefore, the introduced fluid is dispersed only in the center by the distribution protrusion in the center and cannot be guided to flow uniformly and stably to each distribution portion, and thus it is difficult to expect improvement of distribution performance.

Further, in the process that the fluid passing through the mixing channel is distributed to the distributing part through the mixing part, there is a problem that noise is generated due to a vortex generated by collision with the inner wall of the mixing part, and there is a problem that the flow velocity of the fluid flowing inside the main body is increased due to a structure that the mixing channel connecting the introducing channel of the main body and the distributing channel is distributed and discharged after the flow area is sharply reduced compared with the introducing channel.

Further, it is impossible to provide uniform distribution efficiency in the direction of the distribution portion where the chuck is formed.

That is, the slope of the distribution portion formed in the inclined direction is formed in the same manner as the slope of the distribution protrusion, and therefore uniform distribution efficiency can be expected with a stable flow of the fluid, but when the distribution portion is formed in the horizontal direction, the direction of the distribution portion cannot be correctly guided to the distribution protrusion, and the direction thereof inevitably deviates, so that there is a high possibility of collision with the inner wall forming the distribution portion during the flow of the fluid, and it is difficult to expect uniform distribution efficiency.

Also, reference 2 discloses a dispenser in which a dispensing tube having a plurality of dispensing holes formed therein is built, so that an introduced fluid is dispersed through the dispensing holes and then flows into the dispensing tube, thereby reducing pressure loss and noise dispensed by the fluid in the dispenser.

The fluid distributor of reference 2 is expected to reduce pressure loss and noise by mixing and distributing fluid through the distribution holes by arranging the distribution pipes forming the plurality of distribution holes with a gap between the introduction part and the distribution part of the fluid, but noise may be generated by resistance of the fluid colliding with the distribution pipes forming the plurality of distribution holes, and the fluid flowing through the distribution pipes becomes slow and irregular due to re-spreading of the flow cross-sectional area of the fluid passing through the distribution holes having a small flow cross-sectional area to the respective distribution pipes, and thus uniform distribution is difficult to expect.

In addition to this, reference 3 discloses a refrigerant distributor including a discharge pipe fixing portion and a refrigerant introduction pipe, and a plurality of discharge pipes for distributing refrigerant, in a body portion of a middle hole constituting an external appearance of the refrigerant distributor. Reference 4 discloses a fluid dispenser in which a fluid inflow pipe and a plurality of distribution pipes are formed in a dispenser body so that fluid passing through the inflow pipe is distributed at a uniform velocity.

Further, reference 5 discloses a distributor that uniformly mixes liquid and gaseous refrigerants received from a capillary tube and distributes the mixed refrigerant to an evaporator, and reference 6 discloses a mixed fluid distributor that is provided with an outflow plate forming a plurality of outflow holes on a distributor used for a heat exchanger or the like, and that reduces the size and weight of a two-phase fluid (gaseous, liquid) distributor and improves the equal distribution performance.

Reference 7 discloses a two-phase fluid distributor in which a porous plate and a collective plate are provided inside the distributor so as to distribute a two-phase fluid (gas/liquid) at an arbitrary ratio in a stacked arrangement of the porous plate and the collective plate.

Further, reference 8 discloses a refrigerant distributor for an air conditioner, which is configured such that a distribution pipe coupled to a distributor body is accurately coupled to a distribution hole with a correct linearity in order to uniformly supply a refrigerant, thereby achieving complete sealing by smooth and stable welding work and improving reliability with excellent robustness and product stability.

In this regard, the present applicant has invented a fluid dispenser in which a fluid introduced from an introduction passage is uniformly distributed to respective distribution holes, a distribution guide for guiding a guide hole for distributing and guiding the fluid to each distribution hole, and the distribution guide is built in a fluid dispenser to uniformly induce the flow of the fluid to thereby improve the distribution efficiency, and to prevent the occurrence of a vortex to thereby greatly reduce noise. (reference 9, reference 10)

-a reference catalogue-

(reference 1) Korean laid-open patent publication No. 10-2010-52346 (2010.05.19.)

(reference 2) Japanese patent laid-open No. 2003-75028(2003.03.12)

(reference 3) Korean laid-open patent publication No. 10-2005-072250 (2005.07.11.)

(reference 4) Korean laid-open patent publication No. 10-2000-0009340 (2000.02.15.)

(reference 5) Korean laid-open patent publication No. 10-2009-0089068 (2009.08.21.)

(reference 6) Japanese laid-open patent publication Hei 1-159043(1989.06.22.)

(reference 7) Japanese laid-open patent publication No. Hei 6-229651(1984.08.19.)

(reference 8) Korean laid-open utility model publication No. 10-2016-

(reference 9) Korean registered Utility model publication No. 20-0473576 (2014.07.09.)

(reference 10) Korean registered Utility model publication No. 20-0475023 (2014.11.04.)

Disclosure of Invention

(problem to be solved)

The fluid dispenser of the applicant disperses a fluid introduced from the center of a body 10 through a distribution guide 1 and simultaneously induces, guides and uniformly distributes the dispersed fluid toward respective guide holes 2, 2 ' through distribution tubes 12, 12 ' coupled to distribution holes 4, 4 ', as shown in fig. 1.

As described above, the distribution guide 1 is coupled to the inside of the fluid dispenser body 10, and the distribution guide 1 is coupled to the distribution tubes 12 and 12 ' at the respective distribution holes 4 and 4 ' communicating with the guide holes 2 and 2 ' radially formed around the center pointed portion 31 of the distribution portion 3, and the distribution guide 1 is formed with the hole 5 at the center to reduce the weight, which is advantageous for saving materials and the like.

The distribution guide 1 is made of the same material as the main body 10 or a different material (copper, brass, etc.), and is mainly joined by welding, and the distribution tubes 12 and 12 'are also joined by welding to the distribution holes 4 and 4' of the distribution guide 1.

However, since the solder of silver lead (AgPb) is mainly used in the process of welding the distribution holes 4 and 4 'to the distribution pipes 12 and 12', and the welding liquid flows into the central hole 5 in the process of welding the distribution pipes 12 and 12 'to the distribution holes 4 and 4', the solder is wasted, and the main function of the central hole 5, that is, the function of reducing the weight of the distribution guide 1, is reduced because the solder flowing into the central hole 5 fills the central hole 5.

It is also expected that the welding liquid flows into the center hole 5 during welding of the fluid distributor body 10, the distribution guide 1, and the like, and the above-described problem occurs.

On the other hand, a problem of leakage of the fluid occurring at the joint of the fluid dispenser body 10 and the dispensing guide 1 may be suspected.

That is, when there is a gap between the fluid dispenser body 10 and the dispensing guide 1, it is not at all excluded that the fluid in the fluid dispenser body 10 leaks therethrough.

In addition, in the dispensing portion 3 of the dispensing guide 1 located in the fluid dispenser main body 10, there is a possibility that fine cracks (Crack) may occur in a manufacturing process or the like, and it is difficult to visually recognize the fine cracks as they become smaller, and it is necessary to consider a problem of leakage of the fluid when the fine cracks exist in the dispensing portion 3.

In particular, if there is a fine crack from the distribution portion 3 inside the fluid distributor body 10 toward the center hole 5, the fluid inside the fluid distributor body 10 may directly leak to the outside through the center hole 5, which may degrade the performance of the fluid distributor.

In this regard, the present invention is intended to prevent the welding liquid from flowing into the central hole 5 of the distribution guide 1 during the process of joining the distribution holes 4, 4 'to the distribution pipes 12, 12' by welding or the like, thereby preventing the above-mentioned problems, i.e., the waste of the welding material and the reduction of the function (weight reduction or the like) of the central hole 5.

Further, the present invention provides a novel fluid dispenser which can effectively prevent fluid leakage even when a minute Crack (Crack) is present in the dispensing portion 3 of the dispensing guide 1 located in the fluid dispenser body 10, by closing the central hole 5 while blocking the gap between the fluid dispenser body 10 and the dispensing guide 1 so that no gap is generated between the fluid dispenser body 10 and the dispensing guide 1.

(means for solving the problems)

To solve the problems, the fluid dispenser of the present invention forms an introduction passage for fluid introduction at one side of a body, a combined dispensing guide which distributes the fluid introduced from the introduction path to a dispensing tube combined to the dispensing hole is built in the opposite side thereof, the dispensing guide is formed with a hole at the center of the outside of the dispensing part, characterized in that the fluid distributor has a prevention member for blocking a central hole of the distribution guide outside the distribution guide built in the body, the preventing member is inserted and combined from the diameter of the thin plate which is consistent with the inner diameter of the body to the inner side of the body, forms an assembling hole which is consistent with the distributing hole of the distributing guider and is combined with the distributing pipe, and is combined at the outer side of the central hole of the distributing guider, such that the central bore is blocked by the welding liquid during welding of the dispensing guide to the body and during welding of the dispensing tube to the dispensing bore.

And, a blocking protrusion is formed to an outside of the central hole of the dispensing guide, thereby preventing the welding liquid from flowing into the central hole during the welding of the dispensing guide to the body and the welding of the dispensing pipe to the dispensing hole.

(Effect of the invention)

In the process that the distribution holes of the distribution guide are combined with the distribution pipes in a welding mode and the like, the welding liquid cannot flow into the central holes of the distribution guide, so that the waste of welding materials and the reduction of the functions of the central holes can be effectively prevented.

The gap between the fluid distributor body and the distribution guide is blocked, thereby the fluid leakage can be sealed from the source, and the fluid leakage can be effectively prevented under the condition that the distribution part has a Crack (Crack), therefore, the fluid distributor has the advantages of providing clean appearance together with the convenience of manufacture, the saving of manufacture cost and the improved functionality, and the like.

Drawings

Fig. 1 is a sectional view showing the configuration of a conventional fluid dispenser of the present invention.

Fig. 2 is a waist separation cross-sectional view showing one embodiment of the present invention.

Fig. 3 to 5 are assembly process diagrams of a fluid dispenser to which an embodiment of the present invention is applied.

Fig. 6 is an assembled state cross-sectional view of some other embodiments of the present invention.

Fig. 7 and 8 are cross-sectional views showing some other embodiments of the present invention.

Fig. 8 is an assembled state sectional view showing another embodiment of the present invention.

Fig. 9 is a sectional view showing other embodiments of the present invention.

Fig. 10 is a sectional view showing other embodiments of the present invention.

The reference numerals are explained below.

10: a body 11: introduction channel

12. 12': distributing pipe

1: body 2, 2': guide hole

3. 3': distribution line 31: pointed top

32: convex surfaces 4, 4': dispensing hole

5: center hole 51: partition projection

6: prevention means 61, 61': assembling hole

62: assembling the projection 63: convex surface

7: filter (strator)

Best mode of carrying out the invention

One side of the body of the fluid dispenser of the present invention forms an introduction passage into which a fluid is introduced, and a dispensing guide is combined at the opposite side of the introduction passage. The distribution guide is combined inside the fluid distributor body, and the distribution guide is formed with a distribution part distributing the fluid introduced from the introduction channel; a guide hole that guides the fluid dispensed from the dispensing portion to the dispensing hole; and a distribution hole combined with the distribution pipe for discharging the distributed and guided fluid in the guide hole.

The distribution guide is formed as a circular body having a diameter (diameter) conforming to the inner diameter of the main body of the fluid distributor generally formed in a circular tube shape, and is built in the main body of the fluid distributor, and guide holes for distributing and guiding the fluid around the center pointed portion are formed in each of the distribution portions for distributing the fluid.

The guide hole is formed at a position and number corresponding to the distribution holes, at each of which a distribution tube for distributing and discharging the fluid is combined, on the circumference centering on the central peak of the distribution portion.

The guide hole communicating with the distribution hole is formed in the distribution portion, and the distribution portion is formed in a tapered shape in which a flow cross-sectional area gradually decreases from the introduction path toward the distribution hole communicating with the introduction path of the inflow fluid, so that the flow of the fluid is stably and uniformly induced and guided.

In order to reduce the weight and manufacture the fluid dispenser, a hole is formed in the body of the dispensing guide coupled to the body of the fluid dispenser from the outside of the center thereof.

The present invention has a prevention member for preventing a welding material, which is welded to the outside of the distribution guide of the fluid distributor body, from flowing into a central hole formed in the distribution guide.

The preventing member has a combining preventing cover outside the distributing hole combined with the distributing pipe or a blocking bulge outside the central hole.

The preventing member functions to prevent the welding material from flowing into the central hole formed in the dispensing guide and to prevent the fluid in the fluid dispenser body from leaking to the outside.

Detailed description of the invention

The embodiments of the present invention are illustrated by the accompanying drawings. Fig. 2 is a waist-separated sectional view showing one embodiment of the present invention, fig. 3 to 5 are assembly process views of a fluid dispenser to which one embodiment of the present invention is applied, and fig. 6 is an assembled state sectional view showing some other embodiments of the present invention.

The fluid dispenser forms an introduction passage 11 through which fluid is introduced at one side of the body 10 and is combined with a distribution guide 1 at the opposite side thereof for uniformly and efficiently distributing the fluid introduced from the introduction passage 11 to the distribution pipes 12, 12'.

The distribution guide 1 is constituted by: a distribution part 3 formed in a specification (diameter, size) conforming to the inner diameter of the body 10 of the fluid distributor and uniformly distributing the fluid; a plurality of guide holes 2, 2' for uniformly distributing and guiding the fluid with the distribution portion 3 as the center; communicating with said guide holes 2, 2 ' and associated with the dispensing holes 4, 4 ' of the dispensing ducts 12, 12 ', respectively.

Since the fluid dispenser is configured such that a plurality of dispensing tubes 12 and 12 'are circumferentially connected to the body 10 having a circular tube shape with respect to the center thereof, the dispensing guide 1 is formed in a circular shape conforming to the inner diameter (size) of the body 10 of the fluid dispenser, and the guide holes 2 and 2' are also circumferentially arranged with respect to the center of the body 10, and the dispensing holes 4 and 4 'communicating with the guide holes 2 and 2' are formed.

The dispensing guide 1 is incorporated in the body 10 on the opposite side of the introduction channel 11 of the body 10 of the fluid dispenser, is joined to the dispensing orifice 4, 4 'in a welded manner with the dispensing pipe 12, 12' and dispenses and discharges the dispensing pipe 12, 12 'by being joined to the dispensing orifice 4, 4'.

The distribution guide 1 has guide holes 2 and 2' of an introduction passage 11 formed in a fluid distributor body 10 toward a fluid distributor side, and an outer circumferential surface of the distribution guide 1 and an inner circumferential surface of the body 10 are welded to each other so as to be stably fixed in the fluid distributor body 10.

The guide holes 2, 2 'of the distribution guide 1 are formed in a tapered shape having a flow cross-sectional area gradually decreasing from the inlet passage 11 toward the distribution holes 4, 4' from the inlet of the inflow fluid.

The guide holes 2, 2 ' having a flow cross-sectional area gradually reduced toward the distribution holes 4, 4 ' guide the fluid flowing from the introduction passage 11 toward the distribution holes 4, 4 ' in the body 10, centering on the peak 31 formed in the center of the distribution portion 3 in a long and convex shape.

The filter 7 is provided on the side of the introduction passage 11 in the body 10, and a flow resistance effect is generated when the fluid contacts the filter 7, whereby the velocity distribution of the flowing fluid becomes flat from the wall surface to the center and flows to the distribution portion 3.

The dispensing guide 1 has a hole 5 formed in the center of the outer side of the dispensing portion 3 to obtain the benefits of weight reduction and material saving.

The present invention incorporates a prevention member 6 that blocks the central hole 5 of the dispensing guide 1, on the outside of the dispensing guide 1 internally disposed in the fluid dispenser body 10.

The prevention member 6 is formed of a thin plate (about 1 mm) having a diameter corresponding to the inner diameter of the body 10, and is preferably made of the same material (copper, brass, etc.) as the fluid distributor body 10 and the distribution guide 1.

In order to combine the prevention member 6, the dispensing guide 1 is inserted into the inside of the body 10 in conformity with the thickness of the prevention member 6 and combined, thereby making a space in which the prevention member 6 is inserted.

In order to fix the dispensing guide 1 built in the body 10 at a correct position (in order to position the dispensing guide 1 at the correct position without inserting the dispensing guide 1 into the body 10 by a certain depth or more), there are various methods such as providing a catch on the body 10 so that the dispensing guide 1 is not inserted by a certain depth or more.

The preventing member 6 forms assembling holes 61, 61 ' at the number and positions corresponding to the number and positions of the dispensing holes 4, 4 ', and the dispensing tubes 12, 12 ' are inserted into the dispensing holes 4, 4 ' through the assembling holes 61, 61 ' and are joined by welding.

As described above, the assembling projection 62 inserted into the central hole 5 of the distribution guide 1 is formed in the projecting manner in the preventing member 6 coupled to the outside of the distribution guide 1, and the assembling projection 62 is firmly fixed to the central hole 5, so that more stable and accurate coupling of the preventing member 6 can be expected.

Of course, as shown in fig. 6, the assembly projection 62 inserted into the central hole 5 is omitted, and the prevention member 6 is implemented.

The prevention member 6 is welded to the inner circumferential surface of the body 10 of the insertion/distribution guide 1, and when the prevention member 6 is welded, the outer circumferential surface of the distribution guide 1 inserted into the body 10 is also welded to the inner circumferential surface of the body 10.

In this manner, when the prevention member 6 is inserted into the body 10 from the outside of the distribution guide 1 and coupled, it is possible to eliminate the fear that the fluid in the body 10 leaks through the welded portion between the distribution guide 1 and the body 10, that is, the gap between the inner peripheral surface of the body 10 and the outer peripheral surface of the distribution guide 1 which are welded and coupled.

Further, when the dispensing tubes 12 and 12 ' are inserted into the dispensing holes 4 and 4 ' of the dispensing guide 1 through the assembly holes 61 and 61 ' of the preventing member 6 and welded to each other, the central hole 5 of the dispensing guide 1 is closed by the preventing member 6, and the assembly projection 62 is inserted, so that the welding liquid is prevented from flowing into the central hole 5 of the dispensing guide 1 and the dispensing tubes 12 and 12 ' are doubly fixed to the assembly holes 61 and 61 ' and the dispensing holes 4 and 4 ' in the process of welding the dispensing tubes 12 and 12 ' to each other through the assembly holes 61 and 61 ' and the dispensing holes 4 and 4 ' of the preventing member 6, thereby achieving more stable coupling and preventing leakage of the fluid due to the double coupling.

Further, as described above, when the assembly projection 61 of the prevention member 6 is inserted into the central hole 5 and the prevention member 5 covers the central hole 5 and is completely closed, even if a fine gap exists between the distribution portion 3 and the central hole 5, it is possible to completely prevent the fluid from leaking through the central hole 5 outside the distribution portion 3.

Fig. 7 and 8 show some other embodiments of the invention.

The rear face of the dispensing guide 1 incorporating said dispensing duct 12, 12' is formed as a central raised convex face 32 to induce the flow of the soldering liquid towards the edge engaging with the body 10 to prevent the flow into the central hole 5.

Also, the prevention member 6 is formed with a convex surface 63 in a shape conforming to the convex surface 32 of the distribution guide 1, so that the welding liquid is guided to flow toward the edge joined to the body 10 through the convex surface 63 of the prevention member 6 protruded at the center to prevent the loss of the welding material during the welding of the distribution pipes 12, 12', thereby performing a clean welding work.

In the above example, the same operational effects as described above can be expected even when the rear surface of the preventing member 6 is formed only as the convex surface 63 having a convex center, regardless of the shape of the rear surface of the dispensing guide 1.

Fig. 9 shows some other embodiments of the invention.

As an example, a blocking projection 51 is formed outside the central hole 5 outside the dispensing part 3 of the dispensing guide 1.

The blocking projection 51 forms a bank of a certain height outside the end of the central hole 5, so that during welding of the distribution holes 4, 4 'to the distribution pipes 12, 12', the welding liquid is blocked by the projecting sill 51 and does not flow into the central hole 5, remains outside the distribution guide 1, and is formed only outside the distribution holes 4, 4 'of the welded distribution pipes 12, 12'.

Therefore, the central hole 5 can be safely blocked by the solder, and the solder is formed thick outside the dispensing holes 4 and 4', and therefore a more stable assembly structure can be expected.

Fig. 10 shows another embodiment of the present invention, which is an example of a configuration in which a blocking projection 51 is formed outside the central hole 5 outside the dispensing part 3 of the dispensing guide 1, the preventing member 6 is configured to conform to the blocking projection 51 of the central hole 5, and the central hole 5 is closed by surrounding the blocking projection 51.

On the other hand, a blocking protrusion (not shown) may be formed at the center of the outer side of the preventing member 6 blocking the central hole 5 to block the inflow of the welding liquid into the center during the welding of the distribution pipes 12 and 12' to maintain the clean appearance.

Possibility of industrial utilization

The present invention relates to a fluid dispenser for dispensing a fluid such as a refrigerant, and can be widely used in various industrial fields such as refrigerators.

Claims

1. A fluid dispenser in which an introduction passage (11) through which a fluid is introduced is formed at one side of a body (10), a dispensing guide (1) is built in the opposite side thereof, the dispensing guide (1) distributes the fluid introduced from the introduction passage (11) to dispensing tubes (12, 12 ') combined to dispensing holes (4, 4'), and the dispensing guide (1) forms a hole (5) at the center of the outside of a dispensing part (3),

the liquid dispenser is provided with a prevention member (6) for blocking a central hole (5) of a dispensing guide (1) to the outside of the dispensing guide (1) built in a body (10) of the liquid dispenser.

2. The fluid dispenser of claim 1, wherein:

the prevention member (6) has an assembly projection (62) inserted into the central hole (5) of the dispensing guide (1).

3. A fluid dispenser in which an introduction passage (11) through which a fluid is introduced is formed at one side of a body (10), a dispensing guide (1) is built in the opposite side thereof, the dispensing guide (1) distributes the fluid introduced from the introduction passage (11) to dispensing tubes (12, 12 ') combined to dispensing holes (4, 4'), and the dispensing guide (1) forms a hole (5) at the center of the outside of a dispensing part (3),

has a prevention member (6) inserted and combined from the outside of a distribution guide (1) of a body (10) of the fluid distributor to the inside of the body (10),

the prevention member (6) is inserted and coupled from a thin plate to the inside of the body (10) at a diameter corresponding to the inner diameter of the body (10) to form an assembly hole (61, 61 ') corresponding to the dispensing hole (4, 4 ') of the dispensing guide (1) and to which the dispensing pipe (12, 12 ') is coupled, and is coupled to the outside of the central hole (5) of the dispensing guide (1), thereby preventing the welding liquid from flowing into the central hole (5) during the welding of the dispensing guide (1) to the body (10) and the welding of the dispensing pipe (12, 12 ') to the dispensing hole (4, 4 ').

4. The fluid dispenser of claim 3, wherein:

the back surface of the distribution guide (1) combined with the distribution pipe (12, 12 ') is formed into a convex surface (32) with a convex center, the preventing component (6) is also formed into a convex surface (63) which is in accordance with the shape of the convex surface (32) of the distribution guide (1), thereby configuring the distribution pipe (12, 12') to guide the welding liquid to the edge jointed with the body (10) in the welding process.