CN115682469A

CN115682469A - Connecting pipeline of evaporator, evaporator and refrigerator

Info

Publication number: CN115682469A
Application number: CN202110843945.XA
Authority: CN
Inventors: 万彦斌; 陈建全; 王海娟; 薛文超; 刘阳; 朱小兵
Original assignee: HEFEI HAIER REFRIGERATOR CO Ltd; Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: HEFEI HAIER REFRIGERATOR CO Ltd; Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2023-02-03
Also published as: AU2022317931A1; WO2023005652A1

Abstract

The invention provides a connecting pipeline of an evaporator, the evaporator and a refrigerator, wherein the connecting pipeline of the evaporator is connected with a refrigerant inlet of the evaporator, and comprises: the refrigerant inlet comprises a first pipeline, a second pipeline and an inlet pipeline which are sequentially connected, wherein the inlet pipeline is connected with the refrigerant inlet, and the inner diameter of the first pipeline is larger than that of the second pipeline. The connecting pipeline of the evaporator comprises the first pipeline, the second pipeline and the inlet pipeline which are sequentially connected, the inlet pipeline is connected with the refrigerant inlet, and the inner diameter of the first pipeline is larger than that of the second pipeline, so that the noise can be effectively reduced.

Description

Connecting pipeline of evaporator, evaporator and refrigerator

Technical Field

The invention relates to the technical field of refrigeration and freezing devices, in particular to a connecting pipeline of an evaporator, the evaporator and a refrigerator.

Background

In the refrigeration system circulation of the refrigerator, before the refrigerant enters an inlet of an evaporator, the liquid-phase refrigerant in the pipeline gradually begins to vaporize and has a flash phenomenon, violent gas-liquid flow is easy to generate bubbles, and the bubbles are broken to cause fluid turbulence. The spraying noise at the evaporator of the existing refrigerator is large, and the using experience of a user is influenced.

Disclosure of Invention

An object of the present invention is to provide a connection pipe that can be inserted into the front end of an inlet of an evaporator to reduce noise.

A further object of the present invention is to further reduce vibration noise during operation of the evaporator.

In particular, the present invention provides a connection pipe of an evaporator, the connection pipe being provided to be connected to a refrigerant inlet of the evaporator, comprising:

the refrigerant inlet device comprises a first pipeline, a second pipeline and an inlet pipeline which are sequentially connected, wherein the inlet pipeline is connected with a refrigerant inlet, and the inner diameter of the first pipeline is larger than that of the second pipeline.

Optionally, the first conduit has a length of 0.02m to 1.25m.

Optionally, the length of the first conduit is 0.02m-0.9m.

Optionally, a capillary tube is connected upstream of the first pipeline;

the inner diameter of the first pipeline is 0.5-10mm, and the thickness of the pipe wall is 0.2-3mm.

Optionally, the first pipeline and the second pipeline are welded and fixed or integrally formed by drawing;

the second pipeline and the inlet pipeline are welded and fixed or integrally formed in a drawing mode.

Optionally, the second line is welded to the first line and/or the inlet line, wherein

The length of the inlet end of the second pipeline inserted into the first pipeline is 10-30mm;

the length of the outlet end of the second pipeline inserted into the inlet pipeline is 10-30mm.

The invention also provides an evaporator which is provided with the connecting pipeline.

Optionally, the refrigerant outlet of the evaporator is connected with an outlet pipeline;

the evaporator further comprises: the intertube fixing piece is made of flexible materials, at least two fixing grooves are formed in the intertube fixing piece, and the intertube fixing piece is connected with at least two of the first pipeline, the second pipeline, the inlet pipeline and the outlet pipeline through the at least two fixing grooves so as to reduce noise caused by resonance of the pipelines when the evaporator operates.

Optionally, the outlet pipeline is welded and fixed with an air return pipe of the refrigerator, and the outlet pipeline penetrates through a fixing groove of the fixing piece between the pipes.

Optionally, the inter-pipe fixing piece is arranged in the front and rear 45-55mm areas of the pipe diameter mutation positions of the first pipeline and the second pipeline; and/or

The inter-pipe fixing piece is arranged in the front and back 45-55mm areas of the pipe diameter mutation positions of the second pipeline and the inlet pipeline.

The invention also provides a refrigerator which is provided with the evaporator.

Optionally, the refrigerator further comprises:

the inner container is internally provided with a storage chamber; and

the fixing clamp is provided with a body part and a clamping part, the inner container is provided with an installation opening, and the body part is inserted into the installation opening to ensure that the clamping part is positioned at the inner side of the inner container; the clamping part is provided with an upper clamping section and a lower clamping section which are formed by bending forwards from the upper end and the lower end of the front side of the body part respectively, wherein the upper clamping section is bent upwards, the lower clamping section is bent downwards, a gap is formed between the front end of the upper clamping section and the front end of the lower clamping section, so that a space for accommodating a pipeline of the evaporator is limited between the upper clamping section and the lower clamping section, and the inner side surface of the upper clamping section and/or the inner side surface of the lower clamping section are/is provided with flexible pieces.

The connecting pipeline of the evaporator comprises a first pipeline, a second pipeline and an inlet pipeline which are sequentially connected, the inlet pipeline is connected with the refrigerant inlet, and the inner diameter of the first pipeline is larger than that of the second pipeline, so that the noise can be effectively reduced.

Furthermore, the evaporator is provided with the inter-pipe fixing piece which is made of flexible materials, and the inter-pipe fixing piece is connected with at least two of the first pipeline, the second pipeline, the inlet pipeline and the outlet pipeline through at least two fixing grooves, so that the noise caused by the resonance of the pipelines during the operation of the evaporator can be effectively reduced.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic view of the structure of an evaporator having a connection pipe according to an embodiment of the present invention.

Fig. 2 is a schematic view of the connection piping and the evaporator shown in fig. 1.

Fig. 3 is another structural schematic view of the connecting line and the evaporator shown in fig. 1.

Fig. 4 is a further schematic view of the connecting line and evaporator shown in fig. 1.

Fig. 5 is a further schematic view of the connecting lines and evaporator of fig. 1.

Fig. 6 is a further schematic view of the connecting line and evaporator shown in fig. 1.

FIG. 7 is a graph of simulated relationship of turbulence intensity as a function of length of a first tube.

Fig. 8 is a graph of refrigerant quality as a function of length of the first tube run.

Fig. 9 is a graph comparing sound pressure levels of a refrigerator having an evaporator of the related art and the evaporator of fig. 1.

Fig. 10 is a schematic view showing the evaporator shown in fig. 1 with the inter-tube fixing member mounted thereon.

Fig. 11 is a schematic cross-sectional view of the evaporator shown in fig. 10.

Fig. 12 is a schematic view of the structure of the inter-pipe fixing member.

Figure 13 is a cross-sectional schematic view of an inter-tube mount.

Fig. 14 is a schematic structural view of a refrigerator having the evaporator shown in fig. 1.

Fig. 15 is an enlarged schematic view of the refrigerator shown in fig. 14 without the evaporator installed.

Fig. 16 is a partially sectional schematic view of the refrigerator shown in fig. 14 when the evaporator is installed.

Fig. 17 is a schematic view of the structure of the fixing clip.

Fig. 18 is another structural schematic of the retaining clip.

Detailed Description

Fig. 1 is a schematic structural view of an evaporator 200 having a connection pipe 300 according to an embodiment of the present invention. Fig. 2 is a schematic structural view of the connection pipe 300 and the evaporator 200 shown in fig. 1. An embodiment of the present invention provides a connection pipeline 300 of an evaporator 200, where the connection pipeline 300 is connected to a refrigerant inlet of the evaporator 200, and the connection pipeline 300 includes: a first pipe line 301, a second pipe line 302 and an inlet pipe line 203 connected in sequence, wherein the inlet pipe line 203 is connected with a refrigerant inlet, and the inner diameter of the first pipe line 301 is larger than that of the second pipe line 302. The connection pipe 300 of the evaporator 200 according to the embodiment of the present invention is configured to include the first pipe 301, the second pipe 302, and the inlet pipe 203 connected in sequence, and connects the inlet pipe 203 with the refrigerant inlet, and makes the inner diameter of the first pipe 301 larger than the inner diameter of the second pipe 302, thereby effectively reducing noise.

Different fluid conditions can lead to different noise results, and there are three general cases: the first is that the refrigerant has completely changed into gas before entering the refrigerant inlet of the evaporator 200, at this time, the evaporator 200 has relatively low efficiency and the pipe noise is relatively large; the second is that the refrigerant is a two-phase fluid before the refrigerant inlet of the evaporator 200, at this time, the evaporation efficiency is still relatively low, and the two-phase turbulent fluid causes the increase of the burst sound; the third is that the refrigerant enters the evaporator 200 in pure liquid state after throttling and is evaporated, which is an ideal state, and the refrigeration efficiency is the highest and the noise influence is the least. The inventor reasonably talks about simulation analysis, improves the structure, the length and the like of a pipeline, solves the problem of large eruption at the front end of a refrigerant inlet of the evaporator 200, and realizes high efficiency and low noise from a liquid phase to a gas phase.

In some embodiments, the length of the first tube 301 of the connecting tube 300 of embodiments of the present invention is between 0.02m and 1.25m, and preferably the length of the first tube 301 is between 0.02m and 0.9m.

And (4) simulating by adopting a k-epsilon turbulence model according to an N-S equation. The method comprises the following steps of (1) establishing a closed control equation set by using an N-S equation as a control equation and adopting a standard k-epsilon two-equation turbulence model:

in the formula: i and j are coordinate directions; k is a gas phase or a liquid phase; alpha is alpha _k ，ρ _k ，u _k K-phase volume fraction, density and velocity, respectively;

is any physical quantity of the k phase;

and

respectively, the diffusion coefficient and the source of the k-phase.

Fig. 7 is a graph of simulated relationship of turbulence intensity as a function of length of the first conduit 301. From the simulation result turbulence intensity, when the length of the first pipeline 301 is less than 0.02m, the turbulence intensity is high, and the effect of stabilizing the flow cannot be achieved, so that the generation of large fluid noise and vibration can be brought, and the noise reduction is not facilitated. After the length of the first pipeline 301 is larger than 0.02m, the turbulent flow is gradually flattened after being integrated by the pipelines, and becomes stable turbulent flow, so that the vibration is reduced, and the noise is favorably reduced.

The change in length of the first line 301 is linked to the dryness of the refrigerant at the inlet line 203 of the evaporator 200. The change of the dryness fraction value of the first pipeline 301 is influenced by the length of the first pipeline 301, and fig. 8 is a graph of the change of the dryness fraction of the refrigerant along with the length of the first pipeline 301, which is obtained by simulation: the length of the first pipeline 301 is less than 0.9m, and the refrigerating system runs at low dryness; the length of the first pipeline 301 is 0.9m, the slope of the curve has an inflection point, the slope of the dryness curve starts to gradually rise, and the dryness value starts to greatly increase; the length of the first pipeline 301 is 1.25m, the slope of the dryness curve begins to become gentle, namely after a certain size is exceeded, the gas phase of the refrigeration system is dominant, and the efficiency of the system is not improved. Wherein, the dryness calculation formula is as follows: let the specific enthalpy of the wet steam be h, and the dryness thereof be x = (hx-hf)/(hs-hf), hx being the enthalpy of the wet steam, hf being the enthalpy of the saturated liquid phase, and hs being the enthalpy of the saturated steam.

The overall sound power level of the first pipeline 301 at different intervals is tested, and the results are shown in the following table.

As can be seen from the above table, the sound power level is larger when the length of the first pipeline 301 is less than 0.02m or more than 1.25m, the noise reduction is optimal when the length of the first pipeline 301 is in the range of 0.02-0.9m, and the noise is relatively smaller when the length of the first pipeline 301 is in the range of 0.9-1.25 m.

Meanwhile, comparing the frequency changes of the evaporator 200 having the conventional pipe and the evaporator 200 using the connecting pipe 300 according to the embodiment of the present invention, fig. 9 is a comparison graph of the sound pressure level of the refrigerator 100 having the evaporator 200 having the conventional pipe and the evaporator 200 of fig. 1, and it can be seen from fig. 9 that the evaporator 200 using the connecting pipe 300 according to the embodiment of the present invention has an overall reduced main frequency, and particularly, an amplitude of the 1000Hz frequency is significantly reduced.

In some embodiments, a capillary tube (not shown) is connected upstream of the first tube 301 of the connecting tube 300 of embodiments of the present invention; the inner diameter of the first pipeline 301 is 0.5-10mm, and the thickness of the pipe wall is 0.2-3mm. The inner diameter of the first tube 301 is larger than the inner diameter of the capillary tube. If the pipe wall of the first pipeline 301 is too thin, the noise reduction effect is poor, and if the pipe wall is too thick, the cost is high; if the inner diameter of the first pipe 301 is too small, other types of noise problems may occur. Therefore, it is preferable to define the inner diameter of the first pipeline 301 to be 0.5 to 10mm and the thickness of the pipe wall to be 0.2 to 3mm.

In the process of solving the sound ejection problem, the fixing process among the first pipeline 301, the second pipeline 302 and the inlet pipeline 203 of the connecting pipeline 300 in the embodiment of the invention is strongly correlated to the noise effect, if the design is not good, the problem of low-frequency abnormal sound occurs, and meanwhile, in order to ensure the process consistency problem, the connecting pipeline 300 in the embodiment of the invention optimizes the connecting mode among the pipelines. In some embodiments, first conduit 301 and second conduit 302 are welded or integrally drawn; the second pipe 302 is welded to the inlet pipe 203 or integrally drawn.

Fig. 3 is another structural schematic view of the connection pipe 300 and the evaporator 200 shown in fig. 1. In fig. 3, the second pipe 302 is welded to the first pipe 301 and the inlet pipe 203. To ensure a certain weld end strength, the inlet end of the second pipe 302 is inserted into the first pipe 301, and the outlet end of the second pipe 302 is inserted into the inlet pipe 203. In some embodiments, the inlet end of the second tube 302 is inserted into the first tube 301 by a length of 10-30mm; the outlet end of the second pipe 302 is inserted into the inlet pipe 203 by a length of 10-30mm. The insertion portion 320 is labeled in fig. 3. Fig. 4 is a further structural schematic view of the connecting line 300 and the evaporator 200 shown in fig. 1. Fig. 5 is a further structural schematic view of the connecting line 300 and the evaporator 200 shown in fig. 1. Fig. 6 is a further structural schematic view of the connecting line 300 and the evaporator 200 shown in fig. 1. In fig. 4, the second pipe 302 and the first pipe 301 are integrally drawn and fixed to each other by welding, and the second pipe 302 and the inlet pipe 203 are fixed to each other by welding. The integral drawing of the second pipe 302 and the first pipe 301 can reduce the fluid resistance of the refrigerant in the connecting pipe 300 from thick to thin, thereby reducing noise. In fig. 5, the second pipe 302 is fixed to the first pipe 301 by welding, and the second pipe 302 is integrally drawn with the inlet pipe 203. The integral drawing of the second pipe 302 and the inlet pipe 203 can reduce the fluid velocity of the refrigerant in the pipe from thin to thick, and the flow state is changed from abrupt change to gradual change, thereby reducing the noise. In fig. 6, the second pipe 302, the first pipe 301 and the inlet pipe 203 are integrally formed by drawing.

The embodiment of the present invention further provides an evaporator 200 having the aforementioned connecting pipeline 300. Fig. 10 is a schematic view of the evaporator 200 of fig. 1 with an inter-tube fixing member 400 mounted thereon. Fig. 11 is a schematic cross-sectional view of the evaporator 200 shown in fig. 10. In some embodiments, an outlet line 204 is connected to the refrigerant outlet of the evaporator 200; the evaporator 200 of the embodiment of the present invention further includes: the inter-tube fixing member 400 is made of a flexible material, and at least two fixing grooves 411 are formed on the inter-tube fixing member 400, wherein the inter-tube fixing member 400 is connected to at least two of the first pipeline 301, the second pipeline 302, the inlet pipeline 203, and the outlet pipeline 204 through the at least two fixing grooves 411, so as to reduce noise caused by resonance of the pipelines when the evaporator 200 operates. In the evaporator 200 of the embodiment of the present invention, the inter-tube fixing member 400 is provided, the inter-tube fixing member 400 is made of a flexible material, and the inter-tube fixing member 400 is connected to at least two of the first pipeline 301, the second pipeline 302, the inlet pipeline 203, and the outlet pipeline 204 through at least two fixing grooves 411, so that noise caused by pipeline resonance during operation of the evaporator 200 can be effectively reduced. Because the pipeline is longer, and it is higher to only wrap up a pipeline modal frequency, easily produces resonance, consequently, consider to set up intertube mounting 400 and all retrain a plurality of pipelines of cantilever state to make the noise reduction effect better. Specifically, the evaporator 200 operates by causing the evaporator 200 tubes to vibrate strongly due to the refrigerant flowing between the evaporator 200 tubes, thereby generating a loud noise, which is aggravated if the tubes collide, and also affecting the performance of the evaporator 200 and causing a safety hazard. The inter-tube fixing member 400 is a clip fixed between the related pipes of the evaporator 200. The relative positions of the pipes of the evaporator 200 can be ensured by providing the inter-pipe fixing member 400 so that they do not contact and collide, thereby reducing noise during the operation of the evaporator 200 and improving safety. As shown in fig. 1, an evaporator 200 according to an embodiment of the present invention includes an evaporator body, a connecting pipe 300, and an inter-pipe fixing member 400. The evaporator body comprises a plurality of fins 201 and a coil pipe 202 bent and arranged on the plurality of fins 201, and the coil pipe 202 is provided with a refrigerant inlet and a refrigerant outlet; a connecting line 300 is provided between the capillary tube and the refrigerant inlet.

In some embodiments, the outlet pipe 204 of the evaporator 200 according to the embodiments of the present invention is welded and fixed to a return air pipe (not shown) of the refrigerator 100, and the outlet pipe 204 is inserted into a fixing groove 411 of the inter-pipe fixing member 400. As shown in fig. 10, each inter-pipe fixture 400 is divided into three-part constraints, which are modal constraints for the upper, middle, and lower portions of the "S" shaped pipe. After the outlet pipeline 204 is welded to the air return pipe of the refrigerator 100, the outlet pipeline 204 may be regarded as a fixed constraint, and the outlet pipeline 204 is disposed through one fixing groove 411 of the inter-pipe fixing member 400, so that the inter-pipe fixing member 400 may fix the first and second

thin pipelines

301 and 302 by an external force of the fixed outlet pipeline 204, and suppress the vibration of the S-shaped connecting pipeline 300 in the vertical direction.

In some embodiments, the inter-pipe fixing member 400 according to the embodiments of the present invention is disposed in the front and rear 45-55mm regions of the pipe diameter abrupt change positions of the first pipeline 301 and the second pipeline 302; and/or the inter-pipe fixing piece 400 is arranged at the front and back 45-55mm area of the pipe diameter mutation position of the second pipeline 302 and the inlet pipeline 203. The locations where the inter-pipe fixing member 400 can be installed are shown in blocks in fig. 3 and 4. The different position choices of the inter-pipe fixing piece 400 are critical, and the proper position section can effectively inhibit the vibration of the pipeline, change the mode of the pipeline and avoid resonance. Whereas there is no effect if the inter-tube mount 400 is disposed at a modal node location, vibrations may be amplified at other locations. When the refrigerant in the evaporator 200 flows from the first pipeline 301 to the second pipeline 302, throttling occurs at the position where the pipe diameter changes suddenly, and the resistance increases excessively, so that the fluid vibrates violently, and the inter-pipe fixing piece 400 is added at the position to achieve good damping effect. When the refrigerant flows from the second pipeline 302 to the inlet pipeline 203, the eruption phenomenon occurs at the position where the pipe diameter is suddenly changed, the vibration is most intense, and the section where the inter-pipe fixing member 400 is added has a good vibration reduction effect.

Fig. 12 is a schematic view of the structure of the inter-tube fixing member 400. Fig. 13 is a schematic sectional view of the inter-tube fixing member 400. The inter-pipe fixing member 400 according to the embodiment of the present invention includes: a fixed part 401, a movable part 402 and an insertion part 403 which are connected in sequence; wherein, the fixing portion 401 is provided with at least two fixing slots 411 along the left-right direction, and the fixing slots 411 are used for the pipeline to penetrate. The movable portion 402 is movably connected to the fixed portion 401. The insertion part 403 is connected to the movable part 402, and the fixing part 401 is further provided with an insertion opening 412 along the front-back direction, so that after the pipeline is inserted into the fixing groove 411, the movable part 402 is rotated to insert the insertion part 403 into the insertion opening 412 to fix the inter-pipe fixing member 400 and the pipeline, thereby reducing noise caused by resonance of the pipeline. Intertube mounting 400 self adopts similar ribbon formula fastening mode, is difficult for droing after the installation is accomplished taut, guarantees fastening nature and stability.

The inter-tube fixing member 400 according to the embodiment of the present invention may be a flexible structure formed integrally. The material of the inter-tube fixing member 400 may be TPE, rubber or silicone. For example, the inter-tube mounts 400 are made of TPE material, having a hardness HS (A) of 35-65, and each evaporator 200 is fitted with two inter-tube mounts 400.

The fixing portion 401 of the inter-tube fixing member 400 according to the embodiment of the present invention includes a first fixing section 441 and a second fixing section 442; the second fixing section 442 is formed extending forward from the lower rear side of the first fixing section 441; the fixing groove 411 is opened on the first fixing section 441, the second fixing section 442, or an intersection between the first fixing section 441 and the second fixing section 442. Specifically, the upper portion of the first fixing section 441 of the inter-tube fixing member 400 according to the embodiment of the present invention is provided with an insertion port 412; the movable portion 402 is coupled to a front end of the second fixing section 442 such that the insertion portion 403 is inserted into the insertion opening 412 by rotating the movable portion 402 upward after the pipe is inserted into the fixing groove 411. In addition, the position of the insertion part 403 extending out of the insertion opening 412 is further provided with an insertion protrusion 430, so as to further ensure the stable fixation of the inter-pipe fixing member 400 and the pipeline.

As shown in fig. 13, the front wall surface of the first fixing section 441 is provided with two fixing slots 411 which are opened forward and upward at intervals in the up-down direction; a fixing groove 411 opened backward and upward is formed on an upper wall surface of the second fixing section 442; the intersection of the first fixing section 441 and the second fixing section 442 is opened with a fixing groove 411 opened forward and upward. The fixing of the pipeline in the fixing groove 411 is further ensured by differently limiting the orientation of the fixing groove 411 at different positions, so that the pipeline does not fall off from the fixing groove 411. A docking protrusion 420 is formed on the movable portion 402 at a position corresponding to the fixing groove 411 of the front wall surface of the first fixing section 441, so that when the movable portion 402 rotates upward to be attached to the fixing portion 401, the docking protrusion 420 is fitted into the fixing groove 411 to further secure the position of the pipeline in the fixing groove 411. Meanwhile, the size of the fixing groove 411 satisfies: the pipeline is in interference fit with the fixing groove 411. For example, the inner diameter of the fixing groove 411 is 0.1mm smaller than the outer diameter of the pipeline, so that the fixing is firm and the pipeline does not move in the fixing groove 411.

Through the innovative design, the inter-pipe fixing piece 400 can be matched and fastened with each pipeline in the structure, so that the refrigerator 100 cannot be loosened or displaced in the carrying and using processes, and the requirement on stability is met; in terms of material, the inter-pipe fixing member 400 is resistant to high temperature, low temperature, corrosion and aging, has good toughness and is not easy to break; in installation, the inter-pipe fixing member 400 is easy to install, and installation time and labor cost are saved; in manufacturing, the inter-pipe fixing member 400 is easily molded and processed and the fixing groove 411 is stably positioned, and the pipe is not easily dropped, thereby ensuring stability of a pipe gap. In addition, each part of the inter-pipe fixing member 400 of the embodiment of the present invention is smooth and flat, and has no special protrusion or groove structure, so as to ensure smooth and convenient installation. Meanwhile, the entire outer contour of the inter-pipe fixing member 400 may be designed to be a triangular structure consisting of a plurality of smooth arcs, so that the entire inter-pipe fixing member 400 has a smooth appearance and is convenient to install.

Fig. 14 is a schematic structural view of the refrigerator 100 having the evaporator 200 shown in fig. 1. Fig. 15 is an enlarged schematic view of the refrigerator 100 shown in fig. 14 when the evaporator 200 is not installed. The embodiment of the present invention further provides a refrigerator 100 having the evaporator 200. The refrigerator 100 of the embodiment of the present invention includes: a cabinet, a door (not shown), and a compression refrigeration system. Wherein, a storage compartment is defined in the inner container 101 of the box body. The storage chamber can be divided into a refrigeration chamber, a freezing chamber, a temperature-changing chamber and the like according to different preservation temperatures. The compression refrigeration system includes a compressor, an evaporator 200, a condenser, a capillary tube, and the like. The evaporator 200 is used to provide cooling energy to the storage compartment.

Fig. 16 is a partially sectional schematic view of the refrigerator 100 shown in fig. 14 when the evaporator 200 is installed. Fig. 17 is a schematic view of the structure of the fixing clip 500. Fig. 18 is another structural schematic view of the retaining clip 500. The refrigerator 100 of the embodiment of the present invention further includes a fixing clip 500. The fixing clip 500 is provided with a body part 503 and a clamping part 504, the inner container 101 is provided with an installation opening 113, the body part 503 is inserted into the installation opening 113 to ensure that the clamping part 504 is positioned at the inner side of the inner container 101; the clamping portion 504 has an upper clamping section 541 and a lower clamping section 542 which are formed by bending forward from the upper and lower ends of the front side of the body portion 503, respectively, wherein the upper clamping section 541 is bent upward, the lower clamping section 542 is bent downward, a gap is provided between the front end of the upper clamping section 541 and the front end of the lower clamping section 542, so that a space for accommodating the pipe of the evaporator 200 is defined between the upper clamping section 541 and the lower clamping section 542, and the inner side surface of the upper clamping section 541 and/or the inner side surface of the lower clamping section 542 are provided with a flexible member 507.

The existing evaporator 200 is fixed by adopting a clamp made of hard materials in the refrigerator 100, the problem that the refrigerator 100 is transported and is easy to shift and fall off in the using process due to poor fastening performance and insufficient fastening of the clamp and the pipeline of the evaporator 200. According to the fixing clamp 500 of the evaporator 200 provided by the embodiment of the invention, the flexible piece 507 is arranged on the inner side surface of the upper clamping section 541 and/or the inner side surface of the lower clamping section 542, and the elasticity of the flexible piece 507 is relatively better, so that the fixing between the fixing clamp 500 and the pipeline of the evaporator 200 is tighter, the evaporator 200 is more stably fixed in the box body, and meanwhile, the use of the fixing clamp 500 can also reduce vibration and noise during the operation of the evaporator 200. As shown in fig. 14, the evaporator 200 is provided with a fixing clip 500 at each of left and right sides of an upper portion thereof, and a clamping portion 504 of each fixing clip 500 is fixed to the coil pipe 202.

The rear side of the body part 503 is also formed with a limiting piece 501, and the body part 503 is inserted into the mounting opening 113 until the limiting piece 501 abuts against the outer side of the inner container 101. In addition, a handle 502 is formed on the rear side of the stopper piece 501. In fig. 15, a mounting opening 113 is opened in a rear wall 111 of the inner container 101. It can be understood that when the evaporator 200 is installed on the sidewall 112 of the inner container 101, the installation opening 113 may be opened on the sidewall 112 of the inner container 101.

As shown in fig. 17 and 18, a plurality of engaging grooves (not numbered) are respectively formed on an inner side surface of the upper clamping section 541 and an inner side surface of the lower clamping section 542 of the fixing clip 500 according to the embodiment of the present invention, a flexible member 507 is disposed at each engaging groove, and an inner side surface of the flexible member 507 exceeds the engaging groove. The clamping portion 504 is made of ABS material; the flexible part 507 is made of silica gel. The retaining clip 500 may be a one-piece structure.

The fixing clip 500 of the embodiment of the present invention further includes: and a shielding part 505 formed at a front portion of the clamping part 504 for shielding the pipeline after the pipeline is inserted into the clamping part 504. The shielding portion 505 includes an upper shielding portion and a lower shielding portion; wherein the upper shield portion includes a first section 551 extending obliquely upward forward from a front end of the upper holding section 541 and a second section 552 extending obliquely downward rearward from the first section 551; the lower shielding portion includes a third section 553 extending forward and downward obliquely from the front end of the lower clamping section 542 and a fourth section 554 extending rearward and upward obliquely from the third section 553; a gap 506 is provided between the ends of the second section 552 and the fourth section 554. By providing the shielding portion 505, the pipeline of the evaporator 200 can be effectively prevented from falling off from the fixing clip 500. In addition, the whole design of the fixing clip 500 is smooth and flat without special protrusions and grooves, so as to ensure smooth and convenient installation.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. A connecting line of an evaporator, wherein the connecting line is provided in connection with a refrigerant inlet of the evaporator, comprising:

the refrigerant inlet comprises a first pipeline, a second pipeline and an inlet pipeline which are sequentially connected, wherein the inlet pipeline is connected with the refrigerant inlet, and the inner diameter of the first pipeline is larger than that of the second pipeline.

2. The connecting line according to claim 1,

the length of the first pipeline is 0.02m-1.25m.

3. The connecting line according to claim 2,

the length of the first pipeline is 0.02m-0.9m.

4. The connecting line according to claim 1,

the upstream of the first pipeline is connected with a capillary;

5. The connecting line according to claim 1,

the first pipeline and the second pipeline are welded and fixed or integrally formed in a drawing mode;

6. Connecting line according to claim 1,

the second pipeline is welded to the first pipeline and/or the inlet pipeline, wherein

7. An evaporator, characterized by a connecting line according to any one of claims 1 to 6.

8. An evaporator according to claim 7,

the refrigerant outlet of the evaporator is connected with an outlet pipeline;

the evaporator further comprises: the inter-pipe fixing piece is made of flexible materials, at least two fixing grooves are formed in the inter-pipe fixing piece, the inter-pipe fixing piece is connected with at least two of the first pipeline, the second pipeline, the inlet pipeline and the outlet pipeline through the at least two fixing grooves, and therefore noise caused by pipeline resonance when the evaporator operates is reduced.

9. An evaporator according to claim 8,

the outlet pipeline is welded and fixed with an air return pipe of the refrigerator, and the outlet pipeline penetrates through one fixing groove of the inter-pipe fixing piece.

10. An evaporator according to claim 8,

the inter-pipe fixing piece is arranged in the front and rear 45-55mm areas of the pipe diameter mutation positions of the first pipeline and the second pipeline; and/or

The inter-pipe fixing piece is arranged in the front and back 45-55mm area of the pipe diameter mutation position of the second pipeline and the inlet pipeline.

11. A refrigerator characterized by having an evaporator according to any one of claims 7 to 10.

12. The refrigerator according to claim 11, further comprising:

the inner container is internally provided with a storage chamber; and

the fixing clamp is provided with a body part and a clamping part, the inner container is provided with an installation opening, and the body part is inserted into the installation opening to enable the clamping part to be positioned on the inner side of the inner container; the clamping part is provided with an upper clamping section and a lower clamping section which are formed by bending forwards from the upper end and the lower end of the front side of the body part respectively, wherein the upper clamping section is bent upwards, the lower clamping section is bent downwards, a gap is formed between the front end of the upper clamping section and the front end of the lower clamping section, so that a space for accommodating a pipeline of the evaporator is defined between the upper clamping section and the lower clamping section, and the inner side surface of the upper clamping section and/or the inner side surface of the lower clamping section are/is provided with a flexible piece.