Evaporators and refrigerators

Abstract

The present invention provides a connecting pipe of an evaporator, an evaporator, and a refrigerator, the connecting pipe of the evaporator is arranged to be connected to a refrigerant inlet of the evaporator, and comprises a first pipe, a second pipe, and an inlet pipe connected in series, the inlet pipe is connected to the refrigerant inlet, and the inner diameter of the first pipe is larger than that of the second pipe. The connecting pipe of the evaporator comprises a first pipe, a second pipe, and an inlet pipe connected in series, the inlet pipe is connected to the refrigerant inlet, and the inner diameter of the first pipe is larger than that of the second pipe, so that noise can be effectively reduced.

Description

[Technical field]

[0001] The present invention relates to the technical field of refrigeration and freezing equipment, in particular To, This relates to evaporators and refrigerators. [Background technology]

[0002] In the refrigeration system cycle of a refrigerator, before the refrigerant enters the inlet of the evaporator, the liquid refrigerant in the pipe gradually begins to vaporize, causing a flash phenomenon, and the violent gas-liquid flow is prone to generate bubbles, and the bursting of bubbles is prone to cause fluid turbulence. Combined with the periodic compression-suction-exhaust refrigeration system, the pulsating fluid and discontinuous turbulent two-phase flow impact the refrigeration pipe, generating eddy current noise, i.e., spurt noise. The spurt noise in the evaporator of the existing refrigerator is very loud, which adversely affects the user's experience. Summary of the Invention

[0003] One object of the present invention is to provide a connecting pipe that can be connected to the inlet front end of an evaporator to reduce noise. An evaporator having The purpose of this project is to provide

[0004] A further object of the present invention is to further reduce vibration and noise during operation of the evaporator.

[0005] In particular, the present invention provides a connecting line for an evaporator, the connecting line being adapted to be connected to a refrigerant inlet of the evaporator, The refrigerant inlet pipe is connected to a refrigerant inlet, and the first pipe has an inner diameter larger than that of the second pipe.

[0006] Optionally, the length of the first pipe is between 0.02m and 1.25m.

[0007] Optionally, the length of the first pipe is between 0.02m and 0.9m.

[0008] a capillary tube is selectively connected upstream of the first conduit; The first pipe has an inner diameter of 0.5 to 10 mm and a pipe wall thickness of 0.2 to 3 mm.

[0009] Optionally, the first pipe and the second pipe are fixed by welding or integrally drawn; The second pipe and the inlet pipe are fixed by welding or are integrally drawn.

[0010] Optionally, the second line is fixed to the first line and / or the inlet line by welding; The inlet end of the second pipe is inserted into the first pipe by a length of 10 to 30 mm, The outlet end of the second pipe is inserted into the inlet pipe by a length of 10 to 30 mm.

[0011] The present invention further provides an evaporator having the above connecting pipe.

[0012] an outlet line selectively connected to a refrigerant outlet of the evaporator; The evaporator further includes an inter-pipe fixing member made of a flexible material, on which at least two fixing grooves are formed, and the inter-pipe fixing member is connected to at least two of the first pipe, the second pipe, the inlet pipe, and the outlet pipe via the at least two fixing grooves, thereby reducing noise caused by pipe resonance during operation of the evaporator.

[0013] Optionally, the outlet pipe is welded and fixed to the air return pipe of the refrigerator, and the outlet pipe passes through one fixing groove of the inter-pipe fixing member.

[0014] Optionally, the inter-pipe fixing member is provided in an area of ​​45 to 55 mm before and after the position where the pipe diameter of the first pipe and the second pipe suddenly change, and / or The inter-pipe fixing member is provided in a region 45 to 55 mm before and after the position where the pipe diameter of the second pipe and the inlet pipe suddenly changes.

[0015] The present invention further provides a refrigerator having the above evaporator.

[0016] Optionally, the refrigerator a liner defining a storage chamber; a fixing clip having a main body portion and a clamping portion, an installation opening is opened on the liner, the main body portion is inserted into the installation opening so that the clamping portion is positioned inside the liner, the clamping portion has an upper clamping zone and a lower clamping zone, each of which is formed by bending forward from the upper and lower ends of the front side of the main body portion, the upper clamping zone bends upward and the lower clamping zone bends downward, there is a gap between the front end of the upper clamping zone and the front end of the lower clamping zone, a space for accommodating the evaporator pipes is defined between the upper clamping zone and the lower clamping zone, and a flexible member is arranged on the inner surface of the upper clamping zone and / or the inner surface of the lower clamping zone.

[0017] The connecting pipeline of the evaporator of the present invention comprises a first pipeline, a second pipeline and an inlet pipeline connected in series, the inlet pipeline is connected to a refrigerant inlet, and the inner diameter of the first pipeline is larger than the inner diameter of the second pipeline, thereby effectively reducing noise.

[0018] Furthermore, the evaporator of the present invention is provided with an inter-pipe fixing member made of a flexible material, and the inter-pipe fixing member is connected to at least two of the first pipe line, the second pipe line, the inlet pipe line, and the outlet pipe line via at least two fixing grooves, thereby effectively reducing noise caused by pipe resonance during operation of the evaporator.

[0019] The above and other objects, advantages and features of the present invention will become more readily apparent to those skilled in the art from the following detailed description of specific embodiments of the present invention taken in conjunction with the accompanying drawings. [Brief description of the drawings]

[0020] Some specific embodiments of the present invention will now be described, by way of example and not limitation, with reference to the accompanying drawings, in which like reference numerals indicate the same or similar components or parts, and in which those skilled in the art will appreciate that the accompanying drawings are not necessarily drawn to scale.

[0021] [Figure 1]FIG. 2 is a structural schematic diagram of an evaporator having a connecting pipe according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a structural schematic diagram of the connecting pipes and the evaporator shown in FIG. [Diagram 3] 2 is a schematic diagram of another structure of the connecting pipes and the evaporator shown in FIG. 1. [Figure 4] 2 is yet another structural schematic diagram of the connecting pipes and the evaporator shown in FIG. 1. FIG. [Diagram 5] 2 is yet another structural schematic diagram of the connecting pipes and the evaporator shown in FIG. 1. FIG. [Figure 6] 2 is yet another structural schematic diagram of the connecting pipes and the evaporator shown in FIG. 1. FIG. [Figure 7] FIG. 13 is a diagram showing a simulated relationship between turbulence intensity and change in length of the first pipe. [Figure 8] FIG. 4 is a diagram showing the relationship between refrigerant dryness and change in length of a first pipe line. [Figure 9] FIG. 2 is a diagram comparing sound pressure levels in a refrigerator having an evaporator with a conventional duct and the evaporator shown in FIG. 1. [Figure 10] 2 is a schematic diagram showing a structure in which an inter-tube fixing member is attached to the evaporator shown in FIG. 1. FIG. [Figure 11] FIG. 11 is a schematic cross-sectional view of the evaporator shown in FIG. [Figure 12] FIG. 4 is a schematic diagram showing the structure of an inter-pipe fixing member. [Figure 13] FIG. 4 is a schematic cross-sectional view of an intertubular fixing member. [Figure 14] FIG. 2 is a structural schematic diagram of a refrigerator having the evaporator shown in FIG. [Figure 15] FIG. 15 is an enlarged schematic view of the refrigerator shown in FIG. 14 when an evaporator is not attached. [Figure 16] FIG. 15 is a partial cross-sectional schematic view of the refrigerator shown in FIG. 14 with an evaporator attached thereto. [Figure 17] FIG. 2 is a structural schematic diagram of a fixing clip. [Figure 18] FIG. 11 is another structural schematic diagram of the fixing clip; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] FIG. 1 is a structural schematic diagram of an evaporator 200 having a connecting pipe 300 according to an embodiment of the present invention. FIG. 2 is a structural schematic diagram of the connecting pipe 300 and the evaporator 200 shown in FIG. The embodiment of the present invention provides a connecting pipe 300 of the evaporator 200, which is arranged to be connected to the refrigerant inlet of the evaporator 200, and is composed of a first pipe 301, a second pipe 302 and an inlet pipe 203 connected in sequence, the inlet pipe 203 is connected to the refrigerant inlet, and the inner diameter of the first pipe 301 is larger than the inner diameter of the second pipe 302. The connecting pipe 300 of the evaporator 200 of the embodiment of the present invention is composed of a first pipe 301, a second pipe 302 and an inlet pipe 203 connected in sequence, the inlet pipe 203 is connected to the refrigerant inlet, and the inner diameter of the first pipe 301 is larger than the inner diameter of the second pipe 302, so that the noise can be effectively reduced.

[0023] Different fluid states have different noise results, and there are generally three situations. The first is a situation where the refrigerant is completely converted into gas before entering the refrigerant inlet of the evaporator 200, in which case the efficiency of the evaporator 200 is relatively low and the pipe noise is relatively large. The second is a situation where the refrigerant is a two-phase fluid before entering the refrigerant inlet of the evaporator 200, in which case the evaporation efficiency is still relatively low and the two-phase turbulent fluid leads to an increase in the spurt sound. The third is a situation where the refrigerant after being throttled enters the evaporator 200 in a pure liquid state at the end and evaporates, which is an ideal state, with the highest refrigeration efficiency and the smallest noise impact. The inventor combines theory and simulation analysis to improve the structure and length of the pipe, etc., to solve the problem of the large amount of refrigerant at the front end of the refrigerant inlet of the evaporator 200, and achieves high efficiency and low noise from the liquid phase to the gas phase.

[0024] In some embodiments, the length of the first pipeline 301 of the connecting pipeline 300 according to the embodiment of the present invention is between 0.02m and 1.25m, and preferably, the length of the first pipeline 301 is between 0.02m and 0.9m.

[0025] Based on the N-S equations, a k-ε turbulence model is used to perform the simulation, where the N-S equations are used as the control equations and a closed system of control equations is established using the standard k-ε2 equation turbulence model.

number

[0026] 7 is a diagram showing the simulated relationship between turbulence intensity and the change in length of the first pipe 301. As can be seen from the turbulence intensity of the simulation result, when the length of the first pipe 301 is less than 0.02 m, the turbulence intensity is high and the flow cannot be stabilized, resulting in large fluid noise and vibration, which is not useful for noise reduction. When the length of the first pipe 301 is longer than 0.02 m, the turbulence is aligned by the pipe and gradually calms down, becoming a stable turbulence, reducing vibration and contributing to noise reduction.

[0027] There is a certain relationship between the change in length of the first pipe 301 and the refrigerant dryness at the inlet pipe 203 of the evaporator 200. The length of the first pipe 301 affects the change in the pipe dryness value. FIG. 8 is a diagram showing the relationship between the refrigerant dryness and the change in the length of the first pipe 301. As can be seen from the simulation, within the range of the length of the first pipe 301 < 0.9 m, the refrigeration system operates at a low dryness, and when the length of the first pipe 301 is 0.9 m, the slope of the curve inflects, the slope of the dryness curve gradually increases, and the dryness value increases significantly, and when the length of the first pipe 301 is 1.25 m, the slope of the dryness curve begins to flatten. That is, beyond a certain size, the gas phase of the refrigeration system is dominated, which is not helpful in improving the system efficiency. Here, the dryness calculation formula is dryness x = (hx-hf) / (hs-hf), where h is the specific enthalpy of wet steam. where hx is the enthalpy of the wet steam, hf is the enthalpy of the saturated liquid phase, and hs is the enthalpy of the saturated steam.

[0028] Different sections of the length of the first duct 301 were tested for overall equipment sound power levels, and the results are shown in Table 1 below. [Table 1]

[0029] As can be seen from Table 1 above, when the length of the first pipe 301 is <0.02m or >1.25m, the acoustic power level is high, when the length of the first pipe 301 is within the range of 0.02 to 0.9m, the noise reduction is optimal, and when the length of the first pipe 301 is within the range of 0.9 to 1.25m, the noise is relatively small.

[0030] At the same time, the frequency change of the evaporator 200 having the existing duct is compared with that of the evaporator 200 adopting the connecting duct 300 of the embodiment of the present invention. Figure 9 is a diagram comparing the sound pressure level of the refrigerator 100 having the evaporator 200 having the existing duct with that of the evaporator 200 of Figure 1. As can be seen from Figure 9, the evaporator 200 adopting the connecting duct 300 of the embodiment of the present invention has an overall reduction in its main frequencies, and the reduction in the amplitude of the 1000Hz frequency is particularly noticeable.

[0031] In some embodiments, a capillary tube is connected upstream of the first conduit 301 of the connecting conduit 300 of the embodiment of the present invention (not shown), and the inner diameter of the first conduit 301 is 0.5-10 mm, and the thickness of the wall is 0.2-3 mm. The inner diameter of the first conduit 301 is larger than the inner diameter of the capillary tube. If the wall of the first conduit 301 is too thin, the noise reduction effect is poor, if the wall is too thick, the cost is high, and if the inner diameter of the first conduit 301 is too small, other kinds of noise problems may occur. Therefore, it is preferable to limit the inner diameter of the first conduit 301 to 0.5-10 mm and the thickness of the wall to 0.2-3 mm.

[0032] In the process of solving the spurt sound, the connecting pipe 300 of the embodiment of the present invention has a strong relationship with the noise effect in the fixing process between the first pipe 301, the second pipe 302 and the inlet pipe 203, so if the design is poor, a low-frequency abnormal sound problem will occur. In order to ensure the consistency of the process, the connecting pipe 300 of the embodiment of the present invention optimizes the connection method between each pipe. In some embodiments, the first pipe 301 and the second pipe 302 are fixed by welding or integrally drawn, and the second pipe 302 and the inlet pipe 203 are fixed by welding or integrally drawn.

[0033] FIG. 3 is another structural schematic diagram of the connecting pipe 300 and the evaporator 200 shown in FIG. 1. In FIG. 3, the second pipe 302 is welded and fixed to the first pipe 301 and the inlet pipe 203. In order 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 pipe 302 is inserted into the first pipe 301 by a length of 10-30 mm, and the outlet end of the second pipe 302 is inserted into the inlet pipe 203 by a length of 10-30 mm. In FIG. 3, the insertion part 320 is shown. FIG. 4 is yet another structural schematic diagram of the connecting pipe 300 and the evaporator 200 shown in FIG. 1. FIG. 5 is yet another structural schematic diagram of the connecting pipe 300 and the evaporator 200 shown in FIG. 1. FIG. 6 is yet another schematic structural diagram of the connecting pipe 300 and the evaporator 200 shown in FIG.

[0034] In Fig. 4, the second pipe 302 and the first pipe 301 are integrally drawn, and the second pipe 302 and the inlet pipe 203 are welded and fixed. By integrally drawing the second pipe 302 and the first pipe 301, the fluid resistance when the refrigerant moves from the thick pipe to the thin pipe in the connecting pipe 300 is reduced, and noise can be further reduced. In Fig. 5, the second pipe 302 and the first pipe 301 are welded and fixed, and the second pipe 302 and the inlet pipe 203 are integrally drawn. By integrally drawing the second pipe 302 and the inlet pipe 203, the fluid speed when the refrigerant jets from the thin pipe to the thick pipe in the pipe is reduced, and the flow state changes from abrupt to gradual, and noise can be further reduced. In Fig. 6, the second pipe 302, the first pipe 301, and the inlet pipe 203 are integrally drawn.

[0035] The embodiment of the present invention further provides an evaporator 200 having the above-mentioned connecting pipe 300. FIG. 10 is a structural schematic diagram of the evaporator 200 shown in FIG. 1 when an inter-pipe fixing member 400 is attached. FIG. 11 is a cross-sectional schematic diagram of the evaporator 200 shown in FIG. 10. In some embodiments, an outlet pipe 204 is connected to the refrigerant outlet of the evaporator 200. The evaporator 200 of the embodiment of the present invention includes an inter-pipe fixing member 400 made of a flexible material, on which at least two fixing grooves 411 are formed, and the inter-pipe fixing member 400 is connected to at least two of the first pipe 301, the second pipe 302, the inlet pipe 203, and the outlet pipe 204 through the at least two fixing grooves 411, so that the noise caused by pipe resonance during the operation of the evaporator 200 can be effectively reduced. The evaporator 200 of the embodiment of the present invention is provided with an inter-pipe fixing member 400, which is made of a flexible material and is connected to at least two of the first pipe 301, the second pipe 302, the inlet pipe 203, and the outlet pipe 204 via at least two fixing grooves 411, thereby effectively reducing noise caused by pipe resonance during operation of the evaporator 200. Since the pipes are long and winding only one pipe leads to a high modal frequency and is prone to resonance, it is believed that the inter-pipe fixing member 400 can further enhance the noise reduction effect by bundling multiple pipes in a cantilevered state.

[0036] Specifically, when the evaporator 200 is in operation, the flow of refrigerant between the tubes of the evaporator 200 generates strong vibrations in the piping of the evaporator 200, generating loud noise. If the piping collides, the noise will be aggravated and the performance of the evaporator 200 will be affected, which may pose a safety risk. The inter-pipe fixing member 400 is a clamp fixed between the associated piping of the evaporator 200. By providing the inter-pipe fixing member 400, the relative positions of the piping of the evaporator 200 can be secured so as not to come into contact with each other and collide with each other, thereby reducing noise and improving safety performance during operation of the evaporator 200. As shown in FIG. 1, the evaporator 200 of the embodiment of the present invention includes an evaporator body, a connecting piping 300, and an inter-pipe fixing member 400. The evaporator body includes a plurality of fins 201 and a coil piping 202 that is bent and provided through the plurality of fins 201. The coil piping 202 has a refrigerant inlet and a refrigerant outlet, and the connecting piping 300 is provided between the capillary tube and the refrigerant inlet.

[0037] In some embodiments, the outlet pipe 204 of the evaporator 200 of the embodiment of the present invention and the air return pipe (not shown) of the refrigerator 100 are fixed by welding, and the outlet pipe 204 passes through one fixing groove 411 of the inter-pipe fixing member 400. As shown in FIG. 10, each inter-pipe fixing member 400 modally restrains three parts of the upper, middle, and lower "S"-shaped pipe, respectively. After the outlet pipe 204 is welded to the air return pipe of the refrigerator 100, the outlet pipe 204 is considered to be fixedly restrained, and the outlet pipe 204 passes through one fixing groove 411 of the inter-pipe fixing member 400, so that the inter-pipe fixing member 400 can fix the thin first pipe 301 and second pipe 302 by the external force of the fixed outlet pipe 204, and suppress the vertical vibration of the S-shaped connecting pipe 300.

[0038] In some embodiments, the inter-pipe fixing member 400 of the embodiment of the present invention is disposed in an area of ​​45 to 55 mm before and after the position where the pipe diameter suddenly changes between the first pipe line 301 and the second pipe line 302, and / or the inter-pipe fixing member 400 is disposed in an area of ​​45 to 55 mm before and after the position where the pipe diameter suddenly changes between the second pipe line 302 and the inlet pipe line 203. In Fig. 3 and Fig. 4, the mounting position of the inter-pipe fixing member 400 is indicated by a box. The selection of the position of the inter-pipe fixing member 400 is very important, and an appropriate position can effectively suppress the pipe vibration and change the pipe modal to avoid resonance. If the inter-pipe fixing member 400 is disposed at the modal node position, it will be ineffective, and if it is disposed at some other positions, the vibration may be amplified. When the refrigerant in the pipes of the evaporator 200 flows from the first pipe 301 to the second pipe 302, a throttling effect occurs at the position where the pipe diameter suddenly changes, and the fluid vibrates strongly due to a sudden increase in resistance, and adding the inter-pipe fixing member 400 to such a position has an excellent vibration damping effect. When the refrigerant flows from the second pipe 302 to the inlet pipe 203, a gush phenomenon occurs at the position where the pipe diameter suddenly changes, and the vibration is the most rapid, and adding the inter-pipe fixing member 400 to such a position has an excellent vibration damping effect.

[0039] FIG. 12 is a structural schematic diagram of the inter-pipe fixing member 400. FIG. 13 is a cross-sectional schematic diagram of the inter-pipe fixing member 400. The inter-pipe fixing member 400 of the embodiment of the present invention is composed of a fixed part 401, a movable part 402, and an insertion part 403, which are connected in sequence. At least two fixing grooves 411 are opened on the fixed part 401 along the left-right direction, and the fixing grooves 411 are used for the passage of the pipeline. The movable part 402 is movably connected to the fixed part 401. The insertion part 403 is connected to the movable part 402, and an insertion port 412 is further opened on the fixed part 401 along the front-rear direction. 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 port 412, thereby realizing the fixation of the inter-pipe fixing member 400 and the pipeline, and reducing the noise caused by the pipeline resonance. The inter-pipe fixing member 400 itself adopts a tie-type fixing method, which is not likely to fall off after completion of the implementation, and ensures fixation and stability.

[0040] The inter-pipe fixing member 400 in the embodiment of the present invention may be an integrally molded flexible structure. The material of the inter-pipe fixing member 400 may be TPE, rubber or silicone. For example, the inter-pipe fixing member 400 is made of a TPE material and has a hardness of HS(A) 35 to 65, and each evaporator 200 is provided with two inter-pipe fixing members 400.

[0041] The fixing part 401 of the interpipe fixing member 400 of the embodiment of the present invention includes a first fixing zone 441 and a second fixing zone 442, the second fixing zone 442 is formed by extending forward from the lower rear side of the first fixing zone 441, and the fixing groove 411 is opened on the first fixing zone 441, on the second fixing zone 442, or at the intersection between the first fixing zone 441 and the second fixing zone 442. Specifically, an insertion hole 412 is opened on the upper part of the first fixing zone 441 of the interpipe fixing member 400 of the embodiment of the present invention, and the movable part 402 is connected to the front end of the second fixing zone 442, and after the pipe is inserted into the fixing groove 411, the movable part 402 is rotated upward to insert the insertion part 403 into the insertion hole 412. In addition, an insertion protrusion 430 is further provided at a position where the insertion part 403 is inserted into the insertion hole 412, ensuring reliable fixation of the interpipe fixing member 400 and the pipe.

[0042] As shown in Fig. 13, two fixing grooves 411 are provided on the front wall surface of the first fixing zone 441 at an interval along the vertical direction and open upward, a fixing groove 411 is provided on the upper wall surface of the second fixing zone 442 and opens upward toward the rear, and a fixing groove 411 is provided at the intersection of the first fixing zone 441 and the second fixing zone 442 and opens upward toward the front. By restricting the directions of the fixing grooves 411 at different positions, the fixing of the pipeline in the fixing groove 411 is guaranteed, and the pipeline does not fall out of the fixing groove 411. A docking protrusion 420 is formed on the movable part 402 at a position corresponding to the fixing groove 411 on the front wall surface of the first fixing zone 441, and when the movable part 402 is rotated upward to fit into the fixed part 401, the docking protrusion 420 fits into the fixing groove 411, making the position of the pipeline in the fixing groove 411 more reliable. At the same time, the dimensions of the fixing groove 411 satisfy the interference fit between the pipeline and the fixing groove 411. For example, by making the inner radius of the fixing groove 411 smaller than the outer radius of the pipeline by 0.1 mm, the fixation is secure and the pipeline does not move within the fixing groove 411.

[0043] Due to the innovative design as described above, in terms of structure, the inter-pipe fixing member 400 can be fixed in conjunction with each pipe line, and will not loosen or shift during transportation and use of the refrigerator 100, and can meet the requirement of robustness; in terms of material, the inter-pipe fixing member 400 is resistant to high and low temperatures, corrosion and aging, has good toughness, and is not easily broken; in terms of installation, the inter-pipe fixing member 400 is easy to install, and can save installation time and labor costs; in terms of manufacturing, the inter-pipe fixing member 400 is easy to mold, the position of the fixing groove 411 is stable, and the pipe line is not easily dropped off, so that the stability of the gap of the pipe line can be ensured. In addition, each part of the inter-pipe fixing member 400 of the embodiment of the present invention is smooth and has a flat structure without special protrusions or grooves, so that the installation is smooth and convenient. At the same time, the entire outer periphery of the inter-pipe fixing member 400 is designed as a triangular structure consisting of a number of smooth arcs, and the entire inter-pipe fixing member 400 has a rounded appearance, and is easy to install.

[0044] FIG. 14 is a structural schematic diagram of the refrigerator 100 having the evaporator 200 shown in FIG. 1. FIG. 15 is an enlarged schematic diagram of the refrigerator 100 shown in FIG. 14 without the evaporator 200. The embodiment of the present invention further provides the refrigerator 100 having the above evaporator 200. The refrigerator 100 of the embodiment of the present invention includes a cabinet, a door body (not shown) and a compression refrigeration system. Here, a storage compartment is defined in the liner 101 of the cabinet. The storage compartment is divided into a refrigeration compartment, a freezer compartment, a temperature variable compartment, etc. according to different storage temperatures. The compression refrigeration system includes a compressor, an evaporator 200, a condenser, a capillary tube, etc. The evaporator 200 is used to supply cold air to the storage compartment.

[0045] FIG. 16 is a partial cross-sectional schematic diagram of the refrigerator 100 shown in FIG. 14 when the evaporator 200 is attached thereto. FIG. 17 is a structural schematic diagram of the fastening clip 500. FIG. 18 is another structural schematic diagram of the fastening clip 500. The refrigerator 100 according to the embodiment of the present invention further includes a fastening clip 500. The fastening clip 500 includes a main body 503 and a clamping part 504. An attachment opening 113 is opened on the liner 101, and the main body 503 is inserted into the attachment opening 113 so that the clamping part 504 is located inside the liner 101. The clamping part 504 has an upper clamping zone 541 and a lower clamping zone 542, which are respectively formed by bending forward from the upper and lower ends of the front side of the main body 503, the upper clamping zone 541 bending upward, and the lower clamping zone 542 bending downward, and there is a gap between the front end of the upper clamping zone 541 and the front end of the lower clamping zone 542. A space for accommodating the pipes of the evaporator 200 is defined between the upper clamping zone 541 and the lower clamping zone 542, and a flexible member 507 is arranged on the inner surface of the upper clamping zone 541 and / or the inner surface of the lower clamping zone 542.

[0046] The existing evaporator 200 is fixed in the refrigerator 100 by a clamp made of a hard material, and has a problem that the fixing property is poor and the clamp and the piping of the evaporator 200 are not sufficiently fastened, and the refrigerator 100 is easily displaced and falls off during transportation and use. The fixing clip 500 of the evaporator 200 of the embodiment of the present invention has a flexible member 507 disposed on the inner surface of the upper clamping zone 541 and / or the inner surface of the lower clamping zone 542, and the flexible member 507 has a relatively good elasticity, and the fixing clip 500 and the piping of the evaporator 200 are fixed more firmly, and the evaporator 200 is fixed more firmly inside the refrigerator, and at the same time, the use of the fixing clip 500 can reduce vibration and noise during operation of the evaporator 200. As shown in FIG. 14, one fixing clip 500 is provided on each of the left and right sides of the upper part of the evaporator 200, and the clamping part 504 of each fixing clip 500 is fixed to the coil piping 202.

[0047] A limit tab 501 is formed on the rear side of the main body 503, and the main body 503 is inserted into the mounting hole 113 to such an extent that the limit tab 501 is attached to the outside of the liner 101. A handle 502 is further formed on the rear side of the limit tab 501. In FIG. 15 , the mounting hole 113 is opened on the rear wall 111 of the liner 101. It should be understood that when the evaporator 200 is attached to the side wall 112 of the liner 101, the mounting hole 113 may be opened on the side wall 112 of the liner 101.

[0048] 17 and 18, a plurality of engagement grooves (not indicated by reference numerals in the drawings) are formed on the inner surface of upper clamping zone 541 and the inner surface of lower clamping zone 542 of fixing clip 500 according to an embodiment of the present invention, and one flexible member 507 is disposed in each engagement groove, with the inner surface of flexible member 507 extending beyond the engagement groove. Clamping portion 504 is made of ABS material, and flexible member 507 is made of silicone material. Fixing clip 500 may be of an integrally molded structure.

[0049] The fixing clip 500 according to the embodiment of the present invention further includes a shielding portion 505 formed in front of the clamping portion 504 for shielding the pipe after the pipe is inserted into the clamping portion 504. The shielding portion 505 includes an upper shielding portion and a lower shielding portion, the upper shielding portion having a first zone 551 extending from the front end of the upper clamping zone 541 at an upward incline toward the front and a second zone 552 extending from the first zone 551 at an upward incline toward the rear, the lower shielding portion having a third zone 553 extending from the front end of the lower clamping zone 542 at an upward incline toward the front and a fourth zone 554 extending from the third zone 553 at an upward incline toward the rear, and a gap 506 is provided between the ends of the second zone 552 and the fourth zone 554. By providing the shielding portion 505, it is possible to effectively prevent the pipe of the evaporator 200 from falling off the fixing clip 500. Moreover, the overall design of the fastening clip 500 is rounded, flat and without any special protrusions or grooves, allowing for smooth and convenient installation.

[0050] Thus, although several exemplary embodiments of the present invention have been described in detail and comprehensively herein, it should be understood that those skilled in the art can still directly determine or deduce many other variations or modifications conforming to the principles of the present invention based on the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized to cover all such other variations or modifications.

Claims

1. An evaporator having a connecting pipe and an inter-pipe fixing member, the connecting pipe being arranged to be connected to a refrigerant inlet of the evaporator, and an outlet pipe being connected to a refrigerant outlet of the evaporator, the connecting pipeline includes a first pipeline, a second pipeline, and an inlet pipeline connected in series, the inlet pipeline is connected to the refrigerant inlet, and an inner diameter of the first pipeline is larger than an inner diameter of the second pipeline; the inter-pipe fixing member includes a fixed portion, a movable portion, and an insertion portion, which are connected in sequence, and at least two fixing grooves extending in one direction are provided on the fixed portion, and the inter-pipe fixing member is connected to at least two pipelines among the first pipeline, the second pipeline, the inlet pipeline, and the outlet pipeline via the at least two fixing grooves; the movable portion is movably connected to the fixed portion, the insertion portion is connected to the movable portion, and an insertion port is provided on the fixed portion, the insertion port penetrating the fixed portion in a direction perpendicular to the one direction; in a state in which the at least two pipelines are positioned within the at least two fixing grooves while passing through the at least two fixing grooves, the movable part rotates relative to the fixed part, whereby the insertion part connected to the movable part is inserted into the insertion port, thereby realizing fixation between the inter-pipe fixing member and the at least two pipelines; An evaporator, wherein an insertion protrusion that engages with the fixing portion is provided on a portion of the insertion portion that protrudes from the insertion opening.

2. The evaporator according to claim 1, wherein the length of the first pipe is 0.02 m to 1.25 m.

3. The evaporator according to claim 2, wherein the length of the first pipe is 0.02 m to 0.9 m.

4. A capillary tube is connected upstream of the first pipe, The evaporator according to any one of claims 1 to 3, wherein the first pipe has an inner diameter of 0.5 to 10 mm and a pipe wall thickness of 0.2 to 3 mm.

5. The first pipe and the second pipe are fixed by welding or integrally formed by drawing, 4. The evaporator according to claim 1, wherein the second pipe and the inlet pipe are fixed by welding or are integrally formed by drawing.

6. the second pipe and the first pipe and / or the inlet pipe are fixed by welding; The inlet end of the second pipeline is inserted into the first pipeline by a length of 10 to 30 mm, 4. The evaporator according to claim 1, wherein the outlet end of the second pipe is inserted into the inlet pipe by a length of 10 to 30 mm.

7. The inter-pipe fixing member is made of a flexible material, The evaporator according to any one of claims 1 to 3, which reduces noise caused by pipe resonance during operation of the evaporator.

8. The evaporator according to any one of claims 1 to 3, wherein the outlet pipe is welded and fixed to an air return pipe of a refrigerator, and the outlet pipe passes through one of the fixing grooves of the inter-pipe fixing member.

9. The inter-pipe fixing member is provided in a region of 45 to 55 mm before and after a position where the pipe diameters of the first pipe and the second pipe suddenly change, and / or 4. The evaporator according to claim 1, wherein the inter-pipe fixing member is provided in an area of ​​45 to 55 mm before and after a position where the pipe diameters of the second pipe line and the inlet pipe line suddenly change.

10. A refrigerator comprising the evaporator according to any one of claims 1 to 3.

11. a liner defining a storage chamber; a fixing clip having a body portion and a clamping portion, an attachment opening is opened on the liner, the body portion is inserted into the attachment opening such that the clamping portion is positioned inside the liner, the clamping portion has an upper clamping zone and a lower clamping zone, Each of the upper and lower clamping zones is bent forward from the upper and lower ends of the front side of the main body, the upper clamping zone is bent upward, and the lower clamping zone is bent downward, The refrigerator according to claim 10, wherein there is a gap between a front end of the upper clamping zone and a front end of the lower clamping zone, a space for accommodating a pipe of the evaporator is defined between the upper clamping zone and the lower clamping zone, and a flexible member is arranged on an inner surface of the upper clamping zone and / or an inner surface of the lower clamping zone.

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