Refrigerant line communication structure, refrigeration cycle system, and refrigeration apparatus

Abstract

The utility model relates to refrigeration equipment technical field, especially refrigerant pipeline intercommunication structure, refrigeration cycle system and refrigeration plant, refrigerant pipeline intercommunication structure includes first pipe section and second pipe section, and the pipe wall of second pipe section is equipped with the intercommunication mouth, and first pipe section is connected to the intercommunication mouth, first pipe section forms first medium channel and installation chamber, and the one end of first medium channel towards intercommunication mouth forms medium outlet, and medium outlet is communicated with intercommunication mouth through installation chamber, and the installation chamber is provided with the flow resistance piece, and the clearance is formed between flow resistance piece and medium outlet, flow resistance piece is flexible material, and the sealing portion and filter portion are formed to flow resistance piece, and the sealing portion is located at the position of flow resistance piece corresponding medium outlet, and a plurality of filter holes are arranged on filter portion, through the refrigerant pipeline intercommunication structure provided by the utility model embodiment, can weaken the noise problem of the junction area of two pipelines to a certain extent, and better noise suppression effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, and in particular to a refrigerant pipeline connection structure, a refrigeration cycle system, and refrigeration equipment. Background Technology

[0002] Currently, there is a type of refrigerator on the market with a dual-cycle system. It has an evaporator in each of the two different compartments, the refrigerator compartment and the freezer compartment. Liquid refrigerant can be delivered to the evaporator in the refrigerator compartment and the evaporator in the freezer compartment through capillary tubes, and then evaporate and undergo phase change to reduce the temperature in the compartment, thereby achieving the effect of refrigeration and freezing.

[0003] However, in dual-system refrigerators, there is an intersection area between the connecting pipes of the condenser and the two evaporators. When the condenser delivers liquid refrigerant to the freezer evaporator, there is residual refrigerant gas in the pipes connected to the refrigerator evaporator. This residual gas will flow back into the pipes connecting the freezer evaporator with the refrigerant in the intersection area, causing bubbles to appear in the liquid refrigerant and resulting in noise. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the evaporator in the refrigerator compartment and the evaporator in the freezer compartment in the prior art, and to provide a refrigerant pipeline connection structure, a refrigeration cycle system and refrigeration equipment.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] In a first aspect, this utility model provides a refrigerant pipeline connection structure, which includes a first pipe section and a second pipe section. A connection port is formed on the wall of the second pipe section, and the first pipe section is connected to the connection port. A first medium channel and an installation chamber are formed inside the first pipe section. A medium outlet is formed at one end of the first medium channel facing the connection port. The medium outlet is connected to the connection port through the installation chamber. A flow-blocking plate is provided in the installation chamber, and a gap is formed between the flow-blocking plate and the medium outlet. The flow-blocking plate is made of flexible material, and a sealing part and a filtering part are formed on the flow-blocking plate. The sealing part is located at the position of the flow-blocking plate corresponding to the medium outlet, and the filtering part has a plurality of filter holes.

[0007] The refrigerant pipeline connection structure provided in this embodiment includes a first pipe section and a second pipe section. The first pipe section is connected to a connection port on the wall of the second pipe section, and the medium outlet of the first medium channel formed in the first pipe section is connected to the connection port through an installation chamber in the first pipe section. Further, a flexible flow-blocking plate is provided in the installation chamber, forming a gap between the flow-blocking plate and the medium outlet. The flow-blocking plate forms a sealing part and a filtering part, wherein the sealing part is located at the corresponding outlet position of the flow-blocking plate, and the filtering part has several filter holes. Thus, when the liquid medium in the second pipe section flows stably, the bubbles formed by the evaporation of the medium in the first pipe section, when flowing back into the second pipe section, will pass through the flow-blocking plate... The filter holes are segmented to reduce the movement speed and size of the bubbles, thereby reducing the noise from bubble flow and the noise generated by the impact with the liquid medium. Furthermore, when there are drastic fluctuations in the medium pressure in the second pipe section, the flow-blocking element will deform towards the medium outlet due to the pressure difference and eventually cover the medium outlet to a certain extent, thus preventing the medium from flowing into the first pipe section. Therefore, it further avoids the noise generated by the large impact between gas and liquid at the junction of the first and second pipe sections. Thus, the refrigerant pipeline connection structure provided by this utility model embodiment can reduce the noise problem in the junction area of ​​the two pipelines to a certain extent and achieve a good noise suppression effect.

[0008] Preferably, the mounting chamber has a top wall and a side wall, the medium outlet is located at the center of the top wall or near the center of the top wall; the outer peripheral surface of the flow-blocking plate is connected to the side wall, the filter portion surrounds the outer peripheral side of the sealing portion, and a plurality of filter holes are evenly distributed on the surface of the filter portion.

[0009] This configuration further ensures that the medium flows evenly in the circumferential direction when passing through the flow-blocking component, avoiding turbulence in the installation chamber.

[0010] Preferably, a connecting ring is provided at the outer ring of the flow-blocking plate, and the outer peripheral surface of the connecting ring is interference-fitted with the cavity sidewall; the side of the connecting ring facing the medium outlet abuts against the cavity top wall.

[0011] This design facilitates the installation and fixation of the flexible flow baffle, ensuring structural stability during use. Furthermore, the interference fit between the connecting ring and the cavity sidewall further guarantees the fixed position of the flow baffle within the installation chamber, preventing displacement due to pressure differences or excessive medium velocity between the first and second pipe sections, which could affect its performance.

[0012] Preferably, along a direction perpendicular to the flow-blocking plate, the projection of the medium outlet onto the sealing portion is located within the outer contour of the sealing portion. This arrangement ensures that the sealing portion provides good shielding effect at all circumferential points along the medium outlet, thereby further preventing the medium in the second pipe section from rushing into the first pipe section and generating significant flow noise.

[0013] Preferably, the mounting chamber has a top wall, the medium outlet is located at the center of the top wall, and the shape of the medium outlet is the same as the outer contour of the sealing part. This arrangement ensures the uniformity of the circumferential sealing of the medium outlet, thereby further guaranteeing the sealing effect. Furthermore, making the outer contour of the sealing part the same as the medium outlet allows for compatibility with the filter part, which has a uniform annular distribution around the outer circumference of the sealing part, while also ensuring the uniformity of the medium flow through the baffle.

[0014] Preferably, along the direction perpendicular to the plane where the medium outlet is located, the cross-sectional area of ​​the channel at the medium outlet is smaller than the cross-sectional area of ​​the mounting chamber; the end of the first medium channel away from the communication port forms a medium inlet, and at least a portion of the first medium channel is gradually widened along the direction from the medium outlet to the medium inlet.

[0015] This configuration allows the medium in the second pipe section to flow into the first medium channel sequentially through the connecting port and the medium outlet. Due to the increase in the cross-sectional area of ​​the channel, the flow velocity of the medium decreases, thus making the medium flow more slowly. This further avoids the flow noise caused by the medium rushing into the first medium channel.

[0016] Preferably, along the direction from the medium outlet to the medium inlet, the first medium channel includes a first channel segment and a second channel segment that are connected; the channel wall of the first channel segment is cylindrical, the outlet end of the first channel segment forms the inlet end of the second channel segment, and along the direction from the medium outlet to the medium inlet, the channel wall of the second channel segment is inverted conical.

[0017] This configuration allows the first channel section, with its suddenly decreasing inner diameter, to impede the flow of the medium, while simultaneously reducing the velocity of the medium in the second channel section, thereby further enhancing the impediment effect.

[0018] Preferably, at the connection port, the first pipe segment forms a first medium flow direction at the connection port, and the second pipe segment forms a second medium flow direction at the connection port, with an angle greater than 90° between the first and second medium flow directions. This arrangement allows for a large angle between the first and second medium flow directions, thereby making it difficult for the medium to flow backward into the first pipe segment to a certain extent.

[0019] Secondly, this utility model also provides a refrigeration cycle system, which includes the refrigerant pipeline connection structure as described above.

[0020] The refrigeration equipment provided by this utility model has the same beneficial effects as the above-mentioned refrigerant pipeline connection structure, and will not be described again here.

[0021] Preferably, the refrigeration cycle system includes a compressor, a condenser, a first evaporator, and a second evaporator; the refrigeration cycle system includes a first supply pipe and a first return pipe, the condenser, the first supply pipe, the first evaporator, the first return pipe, and the compressor are connected end-to-end to form a first circulation loop; a portion of the first supply pipe forms a second pipe segment, the end of the first pipe segment away from the communication port forms a medium inlet, the second evaporator has an inlet and an outlet that are interconnected, the inlet is connected to the condenser, and the outlet is connected to the medium inlet, so that the condenser, the second evaporator, the first evaporator, the first return pipe, and the compressor are connected to form a second circulation loop.

[0022] Secondly, this utility model also provides a refrigeration device, which includes the refrigeration cycle system described above.

[0023] The refrigeration equipment provided by this utility model has the same beneficial effects as the above-mentioned refrigerant pipeline connection structure and refrigeration cycle system, and will not be described again here.

[0024] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the refrigerant pipeline connection structure according to an embodiment of the present utility model.

[0026] Figure 2 This is a cross-sectional schematic diagram of the refrigerant pipeline connection structure according to an embodiment of the present invention.

[0027] Figure 3 This is a cross-sectional view of the internal structure of the refrigerant pipeline connection structure according to an embodiment of the present invention.

[0028] Figure 4 for Figure 3 A partial structural diagram of part A in the middle.

[0029] Figure 5 This is a schematic diagram of the internal structure of the first pipe section of the refrigerant pipeline connection structure according to an embodiment of the present utility model.

[0030] Figure 6 This is a schematic diagram of the internal structure of the first pipe section of the refrigerant pipeline connection structure according to another perspective of an embodiment of the present utility model.

[0031] Figure 7 This is a schematic diagram of the flow-blocking plate in the refrigerant pipeline connection structure of this utility model embodiment.

[0032] Figure 8 This is a schematic diagram of the refrigeration cycle system according to an embodiment of the present invention.

[0033] Figure 9 This is a schematic diagram of the first medium circulation loop formed by the refrigeration cycle system of this utility model embodiment.

[0034] Figure 10 This is a schematic diagram of the second medium circulation loop formed by the refrigeration cycle system in an embodiment of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Refrigerant piping connection structure; 1a. Gap; 1b. First medium flow direction; 1c. Second medium flow direction; 10. Medium flow direction;

[0037] 11. First pipe section; 111. First medium channel; 111a. Medium outlet; 111b. Medium inlet; 1111. First channel section; 1112. Second channel section; 112. Installation chamber; 1121. Chamber top wall; 1122. Chamber side wall; 113. Connecting channel; 12. Second pipe section; 13. Flow baffle; 131. Sealing part; 132. Filter part; 1321. Filter hole; 133. Connecting ring;

[0038] 2. Compressor; 3. Condenser; 4. First evaporator; 5. Second evaporator; 61. First supply pipe; 611. First supply pipe front section; 612. First supply pipe rear section; 62. First return pipe; 71. Second supply pipe; 72. Second return pipe; 8. Solenoid valve. Detailed Implementation

[0039] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0040] Currently, there is a type of refrigerator on the market with a dual-cycle system. It has an evaporator and a corresponding air supply device in each of the two different compartments, the refrigerator compartment and the freezer compartment. Liquid refrigerant can be delivered to the evaporator in the refrigerator compartment and the freezer compartment respectively through capillary tubes. The liquid refrigerant evaporates and undergoes a phase change in the evaporator, absorbing heat to reduce the temperature in the compartment, thereby achieving the effect of refrigeration and freezing.

[0041] For dual-system refrigerators, the connection pipes between the condenser and the two evaporators are controlled by solenoid valves to achieve the switching between the condenser and the two evaporators. In addition, there is an intersection area between the connection pipes between the condenser and the two evaporators. Specifically, a branch pipe is formed on the pipe that supplies refrigerant to the evaporator in the freezer compartment and connects to the evaporator in the refrigerator compartment. The intersection of the two pipes forms the intersection area.

[0042] However, noticeable refrigerant noise will occur at the junction area. For example, when the solenoid valve switches from being connected to the refrigerator compartment evaporator to being connected to the freezer compartment evaporator, some of the liquid refrigerant will enter the branch pipe connected to the refrigerator compartment evaporator when the liquid refrigerant passes through the junction area. This part of the liquid refrigerant will form refrigerant gas due to pressure changes. The gas will flow back into the liquid refrigerant through the junction area, causing bubble noise in the liquid refrigerant.

[0043] In view of the above situation, this utility model provides a refrigerant pipeline connection structure, a refrigeration cycle system and refrigeration equipment. By improving the refrigerant pipeline connection structure of the refrigeration cycle system with a dual circulation system, the noise problem can be reduced to a certain extent.

[0044] The above is the core idea of ​​this utility model. The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this application.

[0045] like Figures 1-7 As shown, this utility model embodiment provides a refrigerant pipeline connection structure 1, which includes a first pipe section 11 and a second pipe section 12. A connection port is provided on the pipe wall of the second pipe section 12, and the first pipe section 11 is connected to the location of the connection port.

[0046] Specifically, the first pipe section 11 is connected to the pipe wall of the second pipe section 12. That is to say, a part of the first pipe section 11 and a part of the second pipe section 12 form a branch, while the other part of the second pipe section 12 is a shared pipe section. When the medium flows through the other part of the second pipe section 12 to the position of the connection port, the flow direction will change, causing the medium to flow into a part of the second pipe section 12 or into the first pipe section 11.

[0047] Furthermore, a first medium channel 111 and an installation chamber 112 are formed in the first pipe section 11. A medium outlet 111a is formed at the end of the first medium channel 111 facing the connection port. The medium outlet 111a is connected to the connection port through the installation chamber 112.

[0048] Specifically, when the medium is in the first pipe section 11, it flows in the first medium channel 111, and the medium outlet 111a of the first medium channel 111 is connected to the connecting port through the installation chamber 112. That is, the installation chamber 112 is located at the medium outlet 111a in the first pipe section 11, so that the medium in the first medium channel 111 can flow into the second pipe section 12 through the installation chamber 112 and the connecting port.

[0049] Furthermore, a flow-blocking plate 13 is provided in the installation chamber 112, and a gap 1a is formed between the flow-blocking plate 13 and the medium outlet 111a. The flow-blocking plate 13 is made of flexible material, and a sealing part 131 and a filtering part 132 are formed on the flow-blocking plate 13. The sealing part 131 is located at the position of the corresponding medium outlet 111a of the flow-blocking plate 13, and a plurality of filter holes 1321 are opened on the filtering part 132.

[0050] In practice, since the flow-blocking plate 13 is made of flexible material and a gap 1a is formed between the flow-blocking plate 13 and the medium outlet 111a, when the medium in the first pipe section 11 flows into the second pipe section 12 through the medium outlet 111a, the mounting chamber 112 and the connecting port in sequence, the filter part 132 of the flow-blocking plate 13 has filter holes 1321, and the liquid will impact the flow-blocking plate 13 to deform to a certain extent in the direction away from the medium outlet 111a, so the medium can enter the second pipe section 12 relatively easily.

[0051] When a medium flows in the second pipe section 12, there is an evaporation space in the first pipe section 11, and the gas pressure is lower than that in the second pipe section 12. Therefore, when there is a stable liquid medium flowing in the second pipe section 12, some of the medium will flow towards the first pipe section 11 and evaporate into bubbles in the first pipe section 11 due to pressure changes. When the gaseous medium in the first pipe section 11 is full, the bubbles will flow back into the second pipe section 12 through the medium outlet 111a.

[0052] In this embodiment, by setting the flow-blocking element at the medium outlet 111a of the first pipe section 11, when the bubbles in the first pipe section 11 pass through the flow-blocking element, the movement speed and bubble size can be reduced by the division of the filter holes 1321 on the flow-blocking element, thereby further reducing the noise generated by the flow of bubbles and the impact with the liquid medium.

[0053] Meanwhile, when the medium pressure in the second pipe section 12 fluctuates violently, due to the pressure difference relative to the first pipe section 11, the pressure difference will act on the flow-blocking element, causing the flow-blocking element to deform in the direction of the medium outlet 111a. The sealing part 131 of the flow-blocking plate 13 will deform and move towards the position of the medium outlet 111a, and finally cover the medium outlet 111a, thereby achieving a certain degree of shielding of the medium outlet 111a. This can further prevent the medium from flowing into the first pipe section 11, thus further avoiding the noise generated at the junction of the first pipe section 11 and the second pipe section 12 due to the large impact between gas and liquid.

[0054] In summary, the refrigerant pipeline connection structure 1 provided in this embodiment includes a first pipe section 11 and a second pipe section 12. The first pipe section 11 is connected to the connection port on the wall of the second pipe section 12, and the medium outlet 111a of the first medium channel 111 formed in the first pipe section 11 is connected to the connection port through the installation chamber 112 in the first pipe section 11. Further, a flexible baffle 13 is provided in the installation chamber 112, and a gap 1a is formed between the baffle 13 and the medium outlet 111a. The baffle 13 forms a sealing part 131 and a filtering part 132, wherein the sealing part 131 is located at the corresponding outlet of the baffle 13, and the filtering part 132 has a plurality of filter holes 1321. In this way, when the liquid medium in the second pipe section 12 flows stably, the bubbles formed by the evaporation of the medium in the first pipe section 11 are contained within the baffle. When the refrigerant flows back into the second pipe section 12, it is divided by the filter holes 1321 on the flow-blocking element to reduce the movement speed and size of the bubbles, thereby reducing the noise of bubble flow and the noise formed by the impact with the liquid medium. Furthermore, when there are drastic fluctuations in the medium pressure in the second pipe section 12, the flow-blocking element will deform towards the medium outlet 111a due to the pressure difference and eventually cover the medium outlet 111a to a certain extent, thereby preventing the medium from flowing into the first pipe section 11. Therefore, it further avoids the noise generated at the junction of the first pipe section 11 and the second pipe section 12 due to the large impact between gas and liquid. Therefore, the refrigerant pipeline connection structure 1 provided by this utility model embodiment can reduce the noise problem in the junction area of ​​the two pipelines to a certain extent and achieve a good noise suppression effect.

[0055] In this embodiment, the refrigerant pipeline connection structure 1 can be specifically applied to a refrigeration device with a dual circulation system, such as a refrigerator structure in which the refrigerator compartment and the freezer compartment each have a set of evaporators. In this case, the medium refers to liquid refrigerant. The first pipe section 11 can be a medium return pipe connected to the evaporator in the refrigerator compartment, and the second pipe section 12 can be a medium supply pipe connected to the evaporator in the freezer compartment.

[0056] Of course, in other embodiments, the above-mentioned refrigerant pipeline connection structure 1 can also be applied to other systems. As long as the system involves medium backflow and noise generated at the branch position of the flow path, the above-mentioned refrigerant pipeline connection structure 1 provided by this utility model can be used.

[0057] For example, in the refrigerant pipeline connection structure 1 of this embodiment, both the first pipe segment 11 and the second pipe segment 12 can be set as cylindrical pipes. Since the connection port is opened on the second pipe segment 12, in order to adapt to the cylindrical shape of the first pipe segment 11, the connection port will form an arc-shaped opening along the pipe wall surface of the second pipe segment 12. Correspondingly, the edge of the first pipe segment 11 can be set to an outer contour shape that adapts to the arc-shaped opening, so as to ensure the sealing of the junction area of ​​the first pipe segment 11 and the second pipe segment 12. In a specific implementation, the first pipe segment 11 and the second pipe segment 12 can be made into an integrally formed structure, thereby ensuring the structural strength and sealing of the junction area.

[0058] As mentioned earlier, since the medium in the second pipe section 12 flows into the first pipe section 11 through the connecting port during the flow process, that is, at this time, the first pipe section 11 will form a first medium flow direction 1b at the location of the connecting port, and the second pipe section 12 will form a second medium flow direction 1c at the location of the connecting port. When there is a large angle between the first medium flow direction 1b and the second medium flow direction 1c, the medium will have difficulty flowing back into the first pipe section 11 due to the large deflection angle. Therefore, in order to further prevent the medium from flowing into the first pipe section 11, in some embodiments, an angle α can be formed between the first medium flow direction 1b and the second medium flow direction 1c, and the angle α is greater than 90°. In this way, the medium can be made to a certain extent difficult to flow back into the first pipe section 11. In a specific implementation, this angle can be set to 135°. For details, please refer to [link to relevant documentation]. Figure 2 As shown. Of course, in other embodiments, the angle can also be set to be greater than 135° or less than 135°.

[0059] In practical implementation, since both the first pipe segment 11 and the second pipe segment 12 are cylindrical pipes, the first medium flow direction 1b formed at the connection port of the first pipe segment 11 can be understood as the direction of the first pipe segment 11 along its axis away from the connection port. Correspondingly, the second medium flow direction 1c is the direction of the second pipe segment 12 along its axis away from the first pipe segment 11. For details, please refer to... Figure 2 As shown.

[0060] like Figure 5As shown, in some embodiments, the mounting chamber 112 has a top wall 1121 and a side wall 1122. The medium outlet 111a is located at the center of the top wall 1121 or is located near the center of the top wall 1121. On this basis, the outer peripheral surface of the flow baffle 13 is connected to the side wall 1122, and the filter part 132 surrounds the outer peripheral side of the sealing part 131.

[0061] For example, the mounting chamber 112 within the first pipe section 11 is cylindrical, and the sidewall 1122 of the mounting chamber 112 is cylindrical. The top wall 1121 is located at one axial end of the cylindrical shape. The other axial end of the mounting chamber 112 is unobstructed, and the connecting port is located at the other axial end of the mounting chamber 112.

[0062] Based on this, such as Figure 5 As shown, in this embodiment, the medium outlet 111a is located at the center of the top wall 1121 of the cavity, and correspondingly, the sealing part 131 is located at the center of the flow-blocking plate 13. The filter part 132 surrounds the outer periphery of the sealing part 131, which can further ensure that the flow rate of the medium is uniform in the circumferential direction when passing through the flow-blocking member, and avoid turbulence in the installation chamber 112.

[0063] Furthermore, such as Figure 7 As shown, the plurality of filter holes 1321 formed on the filter section 132 can be evenly distributed on the surface of the filter section 132. In this way, the circumferential uniformity of the medium when flowing through the baffle plate 13 can be further guaranteed. On the one hand, it can avoid the generation of turbulence noise caused by the circumferential non-uniformity of the medium when flowing through the baffle plate 13. On the other hand, it can also more fully divide the bubbles along the circumferential direction, thereby further reducing bubble noise.

[0064] like Figure 7 As shown, in some embodiments, a connecting ring 133 is also provided at the outer ring of the flow-blocking plate 13, and the outer peripheral surface of the connecting ring 133 is interference-fitted with the cavity sidewall 1122. This arrangement facilitates the installation and fixation of the flexible flow-blocking plate 13, ensuring its structural stability during use. Furthermore, the interference fit between the connecting ring 133 and the cavity sidewall 1122 further ensures that the position of the flow-blocking plate 13 is fixed in the installation chamber 112, preventing the flow-blocking plate 13 from shifting due to pressure difference or excessive flow velocity of the medium in the first pipe section 11 and the second pipe section 12, thus affecting the performance of the flow-blocking plate 13.

[0065] Furthermore, the side of the connecting ring 133 facing the medium outlet 111a abuts against the top wall 1121 of the cavity. This arrangement prevents the flow-blocking plate 13 from moving towards the medium outlet 111a and disrupting the gap 1a between the medium outlet 111a and the flow-blocking plate 13 when the medium pressure fluctuations within the second pipe section 12 are significant.

[0066] In order to further improve the sealing effect of the flow baffle 13 on the medium outlet 111a, in some embodiments, the projection of the medium outlet 111a on the sealing part 131 is located within the outer contour range of the sealing part 131 along the direction perpendicular to the flow baffle 13.

[0067] This configuration ensures that the sealing part 131 can provide good shielding effect at all circumferential locations along the medium outlet 111a, thereby further preventing the medium in the second pipe section 12 from rushing into the first pipe section 11 and generating significant flow noise.

[0068] In practice, since the flow-blocking plate 13 will deform under pressure, the deformed sealing part 131 will be larger than the original size. Therefore, when the deformed flow-blocking plate 13 is placed on the medium outlet 111a, the sealing part 131 can completely cover the medium outlet 111a along the circumference of the medium outlet 111a, thereby blocking the inflow of the medium to the greatest extent.

[0069] like Figure 5 and Figure 7 As shown, furthermore, in this embodiment, the shape of the medium outlet 111a can be the same as the outer contour shape of the sealing part 131. This ensures the uniformity of the circumferential sealing degree of the medium outlet 111a, thereby further guaranteeing the sealing effect. Furthermore, making the outer contour shape of the sealing part 131 the same as the medium outlet 111a allows for compatibility with the filter part 132, which is uniformly annularly distributed around the outer circumference of the sealing part 131, while also ensuring the uniformity of the medium flow through the flow-blocking plate 13.

[0070] like Figure 5 As shown, in some embodiments, along the direction perpendicular to the plane where the medium outlet 111a is located, the cross-sectional area of ​​the channel at the medium outlet 111a is smaller than the cross-sectional area of ​​the mounting chamber 112, and the end of the first medium channel 111 away from the communication port forms a medium inlet 111b. Along the direction from the medium outlet 111a to the medium inlet 111b, at least a portion of the first medium channel 111 is gradually widened.

[0071] This configuration allows the medium in the second pipe section 12 to flow into the first medium channel 111 sequentially through the connecting port and the medium outlet 111a. Due to the increase in the cross-sectional area of ​​the channel, the flow velocity of the medium decreases, thus making the medium flow more slowly. This further avoids the flow noise caused by the medium rushing into the first medium channel 111.

[0072] In specific implementation, when the first pipe segment 11 is a cylindrical pipe, an internal channel extending to both ends is formed within the first pipe segment 11. A portion of this internal channel forms the aforementioned first medium channel 111, and the other portion forms a connecting channel 113. Based on this, the cross-sectional area of ​​the channel corresponding to the first medium channel 111 can be varied by extending the inner wall of the pipe in the axial direction. For details, please refer to... Figure 3 As shown.

[0073] like Figure 4 and Figure 5 As shown, further, along the direction from the medium outlet 111a to the medium inlet 111b, the first medium channel 111 includes a first channel segment 1111 and a second channel segment 1112 that are connected. The channel wall of the first channel segment 1111 is cylindrical, and the outlet end of the first channel segment 1111 forms the inlet end of the second channel segment 1112. In addition, along the direction from the medium outlet 111a to the medium inlet 111b, the channel wall of the second channel segment 1112 is inverted conical.

[0074] This configuration allows the first channel section 1111, whose inner diameter suddenly decreases, to impede the flow of the medium. At the same time, it reduces the velocity of the medium in the second channel section 1112, thereby further improving the impediment effect.

[0075] In view of the above-mentioned refrigerant pipeline connection structure 1, this utility model embodiment also provides a refrigeration cycle system, which includes the above-mentioned refrigerant pipeline connection structure 1.

[0076] Furthermore, the refrigeration system includes a compressor 2, a condenser 3, a first evaporator 4, and a second evaporator 5. The compressor 2, condenser 3, and first evaporator 4 are sequentially connected to form a first medium circulation loop, as detailed in [reference needed]. Figure 9 As shown; compressor 2, condenser 3, first evaporator 4, and second evaporator 5 are sequentially connected to form a second medium circulation loop, as detailed in [reference needed]. Figure 10 As shown.

[0077] Please refer to the diagram. In practice, the refrigeration system includes a first supply pipe 61 and a first return pipe 62. The condenser 3, the first supply pipe 61, the first evaporator 4, the first return pipe 62, and the compressor 2 are connected end-to-end to form a first medium circulation loop. Specifically... Figure 9The direction of the dashed line marked 10 is the direction of medium flow 10 in the first medium circulation loop. Correspondingly, a portion of the first supply pipe 61 forms the second pipe section 12, and the portion upstream of the second pipe section 12 is the first supply pipe front section 611, and the portion downstream of the second pipe section 12 is the first supply pipe rear section 612.

[0078] Please see Figure 10 As shown, based on this, the end of the first pipe section 11 away from the connection port forms a medium inlet 111b, and the second evaporator 5 has an inlet and an outlet that are interconnected. The inlet is connected to the condenser 3, and the outlet is connected to the medium inlet 111b, so that the condenser 3, the second evaporator 5, the first evaporator 4, the first return pipe 62 and the compressor 2 are connected to form a second medium circulation loop.

[0079] For example, the refrigeration system may further include a second supply pipe 71 and a second return pipe 72, with the condenser 3, the second supply pipe 71, the second evaporator 5, the second return pipe 72, the first supply pipe downstream section 612, the first evaporator 4, the first return pipe 62, and the compressor 2 connected end-to-end to form a second medium circulation loop. Specifically, Figure 10 The direction of the dashed line marked 10 is the direction of medium flow in the first medium circulation loop. It can be seen that when the second medium circulation loop is opened, the medium will flow through the first evaporator 4 and the second evaporator 5 in sequence, and then flow into the compressor 2.

[0080] like Figures 8-10 As shown, in some embodiments, a solenoid valve is also provided downstream of the condenser 3. The solenoid valve can be connected to the first supply pipe 61 and the second supply pipe 71, and switch the connection state of the condenser 3 with the first supply pipe 61 or the second supply pipe 71, thereby switching the connection of the first circulation loop or the second circulation loop.

[0081] It should be noted that, Figures 8-10 The refrigerant pipeline connection structure 1 labeled 1 is only a simple illustration of the connection direction and location, and does not represent the actual structural shape of the refrigerant pipeline connection structure 1.

[0082] In view of the above-mentioned refrigerant pipeline connection structure 1 and refrigeration cycle system, this utility model embodiment also provides a refrigeration device, which includes the above-mentioned refrigerant pipeline connection structure 1 and refrigeration cycle system.

[0083] The refrigeration equipment provided in this embodiment of the present invention, by including the above-mentioned refrigerant pipeline connection structure 1, can have the same technical effects as the above-mentioned refrigerant pipeline connection structure 1 and refrigeration cycle system, which will not be described in detail here.

[0084] The refrigeration equipment provided in this embodiment of the present invention can be a refrigerator with dual-cycle refrigeration for both refrigeration and freezing. Of course, in other embodiments, the above-mentioned refrigerant pipeline connection structure 1 and refrigeration cycle system can also be applied to other types of refrigeration equipment, such as a refrigerator with two independent refrigeration chambers.

[0085] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A refrigerant piping connection structure, characterized in that, It includes a first pipe section and a second pipe section, wherein a connecting port is provided on the pipe wall of the second pipe section, and the first pipe section is connected to the location of the connecting port; The first pipe section has a first medium channel and an installation chamber. The end of the first medium channel facing the communication port forms a medium outlet. The medium outlet is connected to the communication port through the installation chamber. A flow-blocking plate is provided in the installation chamber, and a gap is formed between the flow-blocking plate and the medium outlet. The flow-blocking plate is made of flexible material, and a sealing part and a filtering part are formed on the flow-blocking plate. The sealing part is located at the position of the flow-blocking plate corresponding to the medium outlet, and the filtering part has a plurality of filter holes.

2. The refrigerant pipeline connection structure as described in claim 1, characterized in that, The installation chamber has a top wall and a side wall, and the medium outlet is located at the center of the top wall or near the center of the top wall. The outer peripheral surface of the flow-blocking plate is connected to the cavity sidewall, the filter section is arranged around the outer peripheral side of the sealing section, and a plurality of filter holes are evenly distributed on the surface of the filter section.

3. The refrigerant pipeline connection structure as described in claim 2, characterized in that, A connecting ring is provided at the outer ring of the flow-blocking plate, and the outer peripheral surface of the connecting ring is interference-fitted with the cavity sidewall; The side of the connecting ring facing the medium outlet abuts against the top wall of the cavity.

4. The refrigerant pipeline connection structure as described in claim 1, characterized in that, Along a direction perpendicular to the flow-blocking plate, the projection of the medium outlet onto the sealing portion lies within the outer contour range of the sealing portion; And / or, the mounting chamber has a top wall, the medium outlet is located at the center of the top wall, and the shape of the medium outlet is the same as the outer contour shape of the seal.

5. The refrigerant pipeline connection structure as described in any one of claims 1-4, characterized in that, Along the direction perpendicular to the plane where the medium outlet is located, the cross-sectional area of ​​the channel at the medium outlet is smaller than the cross-sectional area of ​​the mounting chamber; The end of the first medium channel away from the communication port forms a medium inlet, and at least a portion of the first medium channel is gradually widened along the direction from the medium outlet to the medium inlet.

6. The refrigerant pipeline connection structure as described in claim 5, characterized in that, Along the direction from the medium outlet to the medium inlet, the first medium channel includes a first channel segment and a second channel segment that are connected to each other; The channel wall of the first channel segment is cylindrical, the outlet end of the first channel segment forms the inlet end of the second channel segment, and the channel wall of the second channel segment is inverted conical in the direction from the medium outlet to the medium inlet.

7. The refrigerant pipeline connection structure as described in any one of claims 1-4, characterized in that, The first pipe segment forms a first medium flow direction at the location of the connection port, and the second pipe segment forms a second medium flow direction at the location of the connection port. An angle is formed between the first medium flow direction and the second medium flow direction, and the angle is greater than 90°.

8. A refrigeration cycle system, characterized in that, Includes the refrigerant piping connection structure as described in any one of claims 1-7.

9. The refrigeration cycle system as described in claim 8, characterized in that, The refrigeration cycle system includes a compressor, a condenser, a first evaporator, and a second evaporator; The refrigeration cycle system includes a first supply pipe and a first return pipe. The condenser, the first supply pipe, the first evaporator, the first return pipe and the compressor are connected end to end to form a first circulation loop. A portion of the first supply pipe forms the second pipe segment, and the end of the first pipe segment away from the communication port forms a medium inlet. The second evaporator has an inlet and an outlet that are interconnected. The inlet is connected to the condenser, and the outlet is connected to the medium inlet, so that the condenser, the second evaporator, the first evaporator, the first return pipe, and the compressor are connected to form a second circulation loop.

10. A refrigeration device, characterized in that, Includes the refrigeration cycle system as described in claim 8 or 9.

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