Heat exchange system and refrigeration equipment

Abstract

The utility model provides a heat exchange system and refrigeration equipment, the heat exchange system comprises: a first heat exchanger provided with a connecting pipe; the capillary tube comprises an outlet end which is communicated with the connecting tube; the silencer wraps at least part of the outer side walls of the capillary tube and the connecting tube, and the connecting position of the capillary tube and the connecting tube is located in the silencer. The heat exchange system comprises a first heat exchanger, a capillary tube and a silencer, the first heat exchanger is provided with a connecting pipe, the outlet end of the capillary tube is communicated with the connecting pipe, and a refrigerant enters the connecting pipe through the capillary tube and then enters the first heat exchanger. The connecting position of the outlet end of the capillary tube and the connecting tube is located in the silencer, so that eruption sound generated when a refrigerant enters the connecting tube from the capillary tube can be absorbed by the silencer, the refrigerant noise is greatly reduced, and the structures of the capillary tube and the connecting tube do not need to be changed. And therefore, the throughput of the refrigerant and the heat exchange effect of the heat exchange system are not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a heat exchange system and a refrigeration device. Background Art

[0002] At present, when the heat exchange system is running, when the refrigerant enters the evaporator pipe through the capillary tube, it will emit a spray sound, thereby generating noise.

[0003] In the related art, most of the measures to solve the refrigerant spray sound are to change the structure after the capillary outlet, which will change the refrigerant flow rate of the original structure, affecting the service life and heat exchange effect. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0005] To this end, a first aspect of the present invention provides a heat exchange system.

[0006] The second aspect of the present invention further provides a refrigeration device.

[0007] In view of this, the first aspect of the present invention proposes a heat exchange system, including: a first heat exchanger, the first heat exchanger is provided with a connecting pipe; a capillary tube, including an outlet end, the outlet end is connected to the connecting pipe; a muffler, wrapped around at least part of the outer wall of the capillary tube and the connecting pipe, and the connection between the capillary tube and the connecting pipe is located inside the muffler.

[0008] The heat exchange system provided by the present invention includes a first heat exchanger, a capillary tube, and a muffler. The first heat exchanger is provided with a connecting tube, the outlet end of the capillary tube being connected to the connecting tube, and the refrigerant enters the connecting tube through the capillary tube, and then enters the first heat exchanger. The connection between the outlet end of the capillary tube and the connecting tube is located within the muffler, so that the spray sound emitted by the refrigerant when entering the connecting tube from the capillary tube can be absorbed by the muffler, significantly reducing the refrigerant noise. The structure of the capillary tube and the connecting tube does not need to be changed, and thus the refrigerant throughput and the heat exchange effect of the heat exchange system are not affected.

[0009] The heat exchange system provided by the present invention may also have the following additional technical features:

[0010] In some embodiments, optionally, the muffler includes: a channel, the connection between the capillary tube and the connecting tube is located in the channel, there is a first gap between the capillary tube and the inner wall surface of the channel, and there is a second gap between the connecting tube and the inner wall surface of the channel; a sound-absorbing medium is filled in the first gap and the second gap, and the sound-absorbing medium wraps the connection between the capillary tube and the connecting tube along the circumference of the channel.

[0011] In this embodiment, the muffler includes a channel and a muffler medium. The connection between the capillary tube and the connecting tube is located within the channel, and a first gap is defined between the capillary tube and the inner wall of the channel, while a second gap is defined between the connecting tube and the inner wall of the channel. The muffler medium fills the first and second gaps. When the heat exchange system is operating, the spray noise generated by the refrigerant flowing from the capillary tube to the connecting tube is transferred to the muffler medium through the tube wall. The mutual friction between the muffler mediums dissipates the vibration energy as heat energy, thereby reducing the spray noise of the refrigerant. Furthermore, the muffler wraps around the outside of the connection between the capillary tube and the connecting tube, providing support for the capillary tube and the connecting tube, further structurally preventing the transmission of noise.

[0012] In some embodiments, the sound-damping medium optionally comprises a particle medium or a foam medium.

[0013] In this embodiment, the silencing medium includes a particle medium or a foam medium, and both the particle medium and the foam medium can absorb noise, thereby reducing the operating noise of the heat exchange system.

[0014] In some embodiments, optionally, the heat exchange system further includes: a transition pipe, the outlet end of the capillary tube is connected to the connecting pipe through the transition pipe, the silencer medium is at least filled between the transition pipe and the inner wall surface of the channel, and the silencer medium is wrapped around the outside of the transition pipe along the circumference of the transition pipe, and the cross-sectional area of ​​the transition pipe gradually increases along the direction from the capillary tube to the connecting pipe.

[0015] In this embodiment, the heat exchange system also includes a transition tube, which connects the capillary tube to the connecting tube. The cross-sectional area of ​​the transition tube gradually increases along the direction from the capillary tube to the connecting tube. This not only ensures the connection between the capillary tube and the connecting tube, but also allows the refrigerant to gradually enter the connecting tube with a larger diameter, thereby reducing the noise generated by the refrigerant. A sound-absorbing medium is placed at least between the transition tube and the inner wall of the channel, bringing the sound-absorbing medium closer to the noise source and facilitating noise absorption. Furthermore, the sound-absorbing medium wraps around the outside of the transition tube along its circumference, filling the entire circumference of the transition tube and further enhancing the noise reduction effect.

[0016] In some embodiments, optionally, the ratio of the thickness of the silencer medium in the first gap to the diameter of the capillary tube is greater than or equal to 10% and less than or equal to 80%; or the ratio of the thickness of the silencer medium in the second gap to the diameter of the connecting tube is greater than or equal to 10% and less than or equal to 80%.

[0017] In this embodiment, the ratio of the thickness of the silencing medium in the first gap to the diameter of the capillary tube is set to be between 10% and 80% to ensure sufficient filling thickness of the silencing medium, thereby ensuring a good noise absorption effect. Alternatively, the ratio of the thickness of the silencing medium in the second gap to the diameter of the connecting tube is set to be greater than or equal to 10% and less than or equal to 80% to ensure sufficient filling thickness of the silencing medium, thereby ensuring a good noise absorption effect.

[0018] In some embodiments, optionally, the difference between the thickness of the first gap and the thickness of the second gap is greater than or equal to 0 mm and less than or equal to 20 mm.

[0019] In this embodiment, the difference between the thickness of the first gap and the thickness of the second gap is between 0 mm and 20 mm, so that the first gap and the second gap are almost the same, which is beneficial to the filling of the silencer medium, so that the thickness of the silencer medium on the outside of the capillary tube is basically the same as the thickness on the outside of the connecting tube.

[0020] In some embodiments, optionally, the muffler further includes: a first muffler shell, provided with a first groove; a second muffler shell, provided with a second groove, and the first muffler shell and the second muffler shell are engaged with each other so that the first groove and the second groove enclose a channel.

[0021] In this embodiment, the muffler also includes a first muffler shell and a second muffler shell. The first muffler shell and the second muffler shell are snapped onto the outside of the connecting pipe and the capillary tube, so that the first groove and the second groove enclose a channel. This method is simple and reliable, easy to install, and can also fix the connecting pipe and the capillary tube through the first muffler shell and the second muffler shell, further reducing the transmission of vibration.

[0022] In some embodiments, optionally, the heat exchange system further includes: a connecting piece, and the first muffler shell and the second muffler shell are locked by the connecting piece.

[0023] In this embodiment, the heat exchange system also includes a connector, and the first silencer shell and the second silencer shell are locked by the connector, so that the silencer is tightly connected to the outside of the connecting pipe and the capillary tube, which is beneficial to reduce the transmission of vibration caused by the refrigerant spray.

[0024] In some embodiments, optionally, the heat exchange system further includes: a second heat exchanger, the second heat exchanger is connected to the inlet end of the capillary tube; a compressor, the exhaust port of the compressor is connected to the second heat exchanger, and the first heat exchanger is connected to the air inlet of the compressor.

[0025] In this embodiment, the compressor, the first heat exchanger, the capillary tube, and the second heat exchanger constitute a heat exchange flow path, and the refrigerant flows in the heat exchange flow path to achieve heat exchange with the external air.

[0026] According to a second aspect of the present invention, a refrigeration device is further provided, comprising: a heat exchange system as provided in any of the above embodiments.

[0027] The refrigeration equipment provided in the second aspect of the present invention includes the heat exchange system proposed in any of the above technical solutions, and therefore has all the beneficial effects of the heat exchange system.

[0028] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1 One of the structural schematic diagrams of a heat exchange system according to an embodiment of the present invention is shown;

[0031] Figure 2 The second structural diagram of the heat exchange system according to one embodiment of the present invention is shown;

[0032] Figure 3 The third structural diagram of the heat exchange system according to one embodiment of the present invention is shown;

[0033] Figure 4 A fourth structural diagram of a heat exchange system according to an embodiment of the present invention is shown;

[0034] Figure 5 The fifth structural diagram of the heat exchange system according to one embodiment of the present invention is shown;

[0035] Figure 6 A sixth structural diagram of a heat exchange system according to an embodiment of the present invention is shown;

[0036] Figure 7 FIG7 shows a seventh structural diagram of a heat exchange system according to an embodiment of the present invention;

[0037] Figure 8 The microscopic connection model of the damping particles according to one embodiment of the present invention is shown.

[0038] in, Figures 1 to 8 The corresponding relationship between the reference numerals and component names is as follows:

[0039] 1 first heat exchanger, 10 connecting pipe, 2 capillary tube, 20 outlet end, 22 inlet end, 3 muffler, 30 channel, 302 first gap, 304 second gap, 32 muffler medium, 320 particle medium, 34 first muffler shell, 340 first groove, 36 second muffler shell, 360 second groove, 4 transition pipe, 5 connector, 6 second heat exchanger, 7 compressor, 70 exhaust port, 72 air inlet. DETAILED DESCRIPTION

[0040] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0041] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0042] Refer to the following Figures 1 to 8 The heat exchange system and refrigeration equipment proposed according to some embodiments of the present invention are described.

[0043] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 7 As shown, according to one embodiment of the present invention, a heat exchange system is provided, comprising: a first heat exchanger 1, a capillary tube 2, and a muffler 3. The first heat exchanger 1 is provided with a connecting pipe 10; the capillary tube 2 includes an outlet end 20, which is in communication with the connecting pipe 10; the muffler 3 is wrapped around at least a portion of the outer wall of the capillary tube 2 and the connecting pipe 10, and the connection between the capillary tube 2 and the connecting pipe 10 is located within the muffler 3.

[0044] The heat exchange system provided by the present invention includes a first heat exchanger 1, a capillary tube 2, and a muffler 3. The first heat exchanger 1 is provided with a connecting tube 10. The outlet end 20 of the capillary tube 2 is connected to the connecting tube 10. The refrigerant enters the connecting tube 10 through the capillary tube 2 and then enters the first heat exchanger 1. The connection between the outlet end 20 of the capillary tube 2 and the connecting tube 10 is located within the muffler 3. Therefore, the spray sound emitted by the refrigerant when entering the connecting tube 10 from the capillary tube 2 can be absorbed by the muffler 3, significantly reducing the refrigerant noise. Without changing the structure of the capillary tube 2 and the connecting tube 10, the refrigerant throughput and the heat exchange effect of the heat exchange system are not affected.

[0045] It can be understood that the diameter of the capillary tube 2 is smaller than the diameter of the connecting tube 10 .

[0046] like Figure 2 and Figure 6 As shown, in some embodiments, the muffler 3 optionally includes: a channel 30 and a muffler medium 32. The connection between the capillary tube 2 and the connecting tube 10 is located in the channel 30, with a first gap 302 defined between the capillary tube 2 and the inner wall of the channel 30, and a second gap 304 defined between the connecting tube 10 and the inner wall of the channel 30. The muffler medium 32 fills the first gap 302 and the second gap 304, and wraps around the connection between the capillary tube 2 and the connecting tube 10 along the circumference of the channel 30.

[0047] In this embodiment, the muffler 3 includes a channel 30 and a muffler medium 32. The connection between the capillary tube 2 and the connecting tube 10 is located within the channel 30. A first gap 302 is defined between the capillary tube 2 and the inner wall of the channel 30, and a second gap 304 is defined between the connecting tube 10 and the inner wall of the channel 30. The muffler medium 32 fills the first gap 302 and the second gap 304. When the heat exchange system is operating, the refrigerant's jet noise when flowing from the capillary tube 2 to the connecting tube 10 is transferred through the tube wall to the muffler medium 32. The mutual friction between the muffler medium 32 dissipates the vibration energy as heat energy, thereby reducing the refrigerant's jet noise. At the same time, the muffler 3 wraps around the outside of the connection between the capillary tube 2 and the connecting tube 10, providing some support for the capillary tube 2 and the connecting tube 10, further structurally preventing noise transmission.

[0048] It is understood that the sound-absorbing medium 32 is composed of a sound-absorbing material.

[0049] In some embodiments, the sound attenuation medium 32 optionally includes a particulate medium 320 or a foam medium.

[0050] In this embodiment, the silencing medium 32 includes a particle medium 320 or a foam medium. Both the particle medium 320 and the foam medium can absorb noise, thereby reducing the operating noise of the heat exchange system.

[0051] Optionally, the silencing medium 32 includes a particle medium 320 , and the muffler 3 includes a particle damping muffler.

[0052] Specifically, the particle medium 320 includes a particle damping material, and the particle medium 320 is granular. When noise is generated, it will cause friction between the particles and the wall, and between the particles, thereby consuming the vibration energy in the form of heat energy to reduce the noise generated when the refrigerant flows from the capillary tube 2 into the connecting tube 10.

[0053] In some embodiments, optionally, the heat exchange system further includes: a transition tube 4, the outlet end 20 of the capillary tube 2 is connected to the connecting tube 10 through the transition tube 4, the silencing medium 32 is at least filled between the transition tube 4 and the inner wall surface of the channel 30, and the silencing medium 32 is wrapped around the outside of the transition tube 4 along the circumference of the transition tube 4, and the cross-sectional area of ​​the transition tube 4 gradually increases along the direction from the capillary tube 2 to the connecting tube 10.

[0054] In this embodiment, the heat exchange system also includes a transition tube 4, through which the capillary tube 2 is connected to the connecting tube 10. The cross-sectional area of ​​the transition tube 4 gradually increases along the direction from the capillary tube 2 to the connecting tube 10. This not only facilitates the connection between the capillary tube 2 and the connecting tube 10, but also allows the refrigerant to gradually enter the connecting tube 10 with a larger diameter, thereby reducing the noise generated by the refrigerant. A sound-absorbing medium 32 is filled at least between the transition tube 4 and the inner wall of the channel 30, bringing the sound-absorbing medium 32 closer to the noise source and facilitating noise absorption. Furthermore, the sound-absorbing medium 32 wraps around the outside of the transition tube 4 along its circumference, filling the entire circumference of the transition tube 4 and further enhancing the noise reduction effect.

[0055] Optionally, the silencing medium 32 is wrapped between the transition pipe 4 and the inner wall surface of the channel 30 , between the connection between the transition pipe 4 and the connecting pipe 10 , and between the connection between the transition pipe 4 and the capillary tube 2 .

[0056] Optionally, the filling of the silencing medium 32 covers from one end of the channel 30 to the other end of the channel 30 , that is, the silencing medium 32 fills the channel 30 .

[0057] It can be understood that part of the capillary tube 2 is arranged in the channel 30, and the other part is arranged outside the channel 30, and part of the connecting pipe 10 is arranged in the channel 30, and the other part is arranged outside the channel 30, so as to reduce the size of the muffler 3 and reduce the space occupied by the heat exchange system.

[0058] like Figure 6 As shown, in some embodiments, optionally, the ratio of the thickness H1 of the silencing medium 32 in the first gap 302 to the diameter H2 of the capillary tube 2 is greater than or equal to 10% and less than or equal to 80%; or the ratio of the thickness H3 of the silencing medium 32 in the second gap 304 to the diameter H4 of the connecting tube 10 is greater than or equal to 10% and less than or equal to 80%.

[0059] In this embodiment, the ratio of the thickness H1 of the silencing medium 32 within the first gap 302 to the diameter H2 of the capillary tube 2 is set between 10% and 80% to ensure sufficient filling thickness of the silencing medium 32 and, thereby, to ensure effective noise absorption. Alternatively, the ratio of the thickness H3 of the silencing medium 32 within the second gap 304 to the diameter H4 of the connecting tube 10 is greater than or equal to 10% and less than or equal to 80% to ensure sufficient filling thickness of the silencing medium 32 and, thereby, to ensure effective noise absorption.

[0060] Specifically, the ratio of the thickness H1 of the silencing medium 32 in the first gap 302 to the diameter H2 of the capillary tube 2 is any value among 10%, 20%, 30%, 40%, 50%, 60%, 70%, and 80%; the ratio of the thickness H3 of the silencing medium 32 in the second gap 304 to the diameter H4 of the connecting tube 10 is any value among 10%, 20%, 30%, 40%, 50%, 60%, 70%, and 80%.

[0061] In some embodiments, optionally, the difference between the thickness H5 of the first gap 302 and the thickness H6 of the second gap 304 is greater than or equal to 0 mm and less than or equal to 20 mm.

[0062] In this embodiment, the difference between the thickness H5 of the first gap 302 and the thickness H6 of the second gap 304 is between 0 mm and 20 mm, so that the thickness of the first gap 302 and the second gap 304 are almost the same, which is conducive to the filling of the sound-absorbing medium 32, so that the thickness of the sound-absorbing medium 32 on the outside of the capillary 2 is basically the same as the thickness on the outside of the connecting tube 10.

[0063] In a specific application, after the silencing medium 32 is filled in the first gap 302 and the second gap 304 , the thickness H5 of the first gap 302 is the same as the thickness H1 of the silencing medium 32 in the first gap 302 , and the thickness H6 of the second gap 304 is the same as the thickness H3 of the silencing medium 32 in the second gap 304 .

[0064] Optionally, the difference between the thickness H5 of the first gap 302 and the thickness H6 of the second gap 304 is equal to any value among 1 mm, 5 mm, 7 mm, 8 mm, 9 mm, 10 mm, 12 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, and 20 mm.

[0065] Optionally, the channel 30 includes a first channel and a second channel with different diameters, the capillary 2 is arranged in the first channel, and the connecting tube 10 is arranged in the second channel, so that the difference between the first gap 302 and the second gap 304 is controlled between 0 mm and 20 mm.

[0066] Optionally, the channel 30 also includes a transition section, which is connected between the first channel and the second channel, and the cross-sectional area gradually increases from the first channel to the second channel. The transition pipe 4 is correspondingly installed in the transition section, and the difference between the gap between the transition pipe 4 and the transition section and any two of the first gap 302 and the second gap 304 is between 0 mm and 20 mm.

[0067] like Figure 2 and Figure 4 As shown, in some embodiments, optionally, the muffler 3 further includes: a first muffler shell 34, provided with a first groove 340; a second muffler shell 36, provided with a second groove 360, and the first muffler shell 34 and the second muffler shell 36 are engaged with each other so that the first groove 340 and the second groove 360 ​​enclose the channel 30.

[0068] In this embodiment, the muffler 3 also includes a first muffler shell 34 and a second muffler shell 36. The first muffler shell 34 and the second muffler shell 36 are snapped onto the outside of the connecting pipe 10 and the capillary tube 2, so that the first groove 340 and the second groove 360 ​​enclose the channel 30. This method is simple, reliable, and easy to install. It can also fix the connecting pipe 10 and the capillary tube 2 through the first muffler shell 34 and the second muffler shell 36, further reducing the transmission of vibration.

[0069] like Figure 2 As shown, in some embodiments, optionally, the heat exchange system further includes: a connector 5 , through which the first muffler shell 34 and the second muffler shell 36 are locked.

[0070] In this embodiment, the heat exchange system also includes a connector 5, and the first silencer shell 34 and the second silencer shell 36 are locked by the connector 5, so that the silencer 3 is tightly connected to the outside of the connecting pipe 10 and the capillary tube 2, which is beneficial to reduce the transmission of vibration caused by the refrigerant spray.

[0071] Optionally, the connecting member 5 includes a locking member, such as a bolt and a nut.

[0072] like Figure 7 As shown, in some embodiments, optionally, the heat exchange system also includes: a second heat exchanger 6, the second heat exchanger 6 is connected to the inlet end 22 of the capillary tube 2; a compressor 7, the exhaust port 70 of the compressor 7 is connected to the second heat exchanger 6, and the first heat exchanger 1 is connected to the air inlet 72 of the compressor 7.

[0073] In this embodiment, the compressor 7, the first heat exchanger 1, the capillary tube 2 and the second heat exchanger 6 constitute a heat exchange flow path, and the refrigerant flows in the heat exchange flow path to achieve heat exchange with the external air.

[0074] Optionally, the first heat exchanger 1 includes an evaporator, and the second heat exchanger 6 includes a condenser.

[0075] According to an embodiment of the present invention, a refrigeration device is provided, comprising: a heat exchange system as provided in any of the above embodiments.

[0076] The refrigeration equipment provided by the present invention includes the heat exchange system proposed in any of the above embodiments, and therefore has all the beneficial effects of the heat exchange system.

[0077] Optionally, the refrigeration equipment includes refrigerators, freezers, air conditioners, etc.

[0078] In specific applications, this application addresses the prominent problem of refrigerant ejection noise in refrigerators by installing a particle damping muffler (e.g., muffler 3) at the outlet end 20 of the capillary tube 2 of the refrigerant pipeline to reduce the ejection noise emitted when the refrigerant passes through the capillary tube 2 and enters the evaporator pipeline. This device provides dual isolation from both the air path and the structural path. The muffler material is resistant to temperatures as low as -40°C and can be designed for broadband operation. This type of muffler 3 offers significant muffler effects, does not alter the original pipeline structure, and is easy to process and install. It can significantly reduce refrigerant noise while ensuring that the refrigerant flow rate and service life remain unchanged.

[0079] Optionally, the thickness of the particle damping material (such as the particle medium 320) is filled according to 10%-80% of the pipeline diameter, and a filling mold (such as the first silencer shell and the second silencer shell) is designed in the tapered area of ​​the capillary 2. This mold and the pipeline maintain a certain distance, and the distance is used to fill the particle damping material.

[0080] Specifically, if Figure 6 and Figure 7 As shown, the refrigerant flows into the capillary tube 2 and flows out of the thick tube (such as the connecting tube 10). A particle damping silencer is set at the right-angle interface in the middle. The interior of the particle damping silencer is filled with damping granular material (such as particle damping material) and fixed with bolts at the four corners. Capillary tubes 2 of various sizes and installation methods can be silenced. Its main principle is to reduce the vibration of the tube wall caused by the refrigerant spray sound through friction between particles, thereby reducing the noise when the refrigerant flows out of the capillary tube 2. The particle damping silencer can be installed in different ways according to the specific form of the pipeline.

[0081] like Figure 8 As shown in FIG, the microscopic contact model of the damping particles is divided into two categories: one is the particles i in contact with the wall, and the other is the particles j in contact only with the particles. s1 represents the tangential elastic index of particle i, k n1 represents the normal elastic index of particle i, C s1 represents the tangential damping coefficient of particle i, C n1 represents the normal damping coefficient of particle i; k s2represents the tangential elastic index of particle j, k n2 represents the normal elastic index of particle j, C s2 represents the tangential damping coefficient of particle j, C n2 represents the normal damping coefficient of particle j. F j n represents the normal force on particle j, F i n represents the normal force on particle i, F i t represents the tangential force on particle i; F on the wall j n represents the normal force on the wall acted by particle j, F j t represents the tangential force exerted on the wall by particle j. η1 and η2 are the friction indices between particles i and j, respectively, and the damper housing (e.g., the inner wall of channel 30). Both contact types are represented by radial and tangential contact, which are equivalent to radial and tangential elastic and damping forces. When noise is generated, it causes friction between particles and the wall, and between particles, dissipating vibration energy as heat, thereby reducing the eruption noise generated when the refrigerant flows from capillary tube 2 into the thick tube.

[0082] In this utility model, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can refer to a fixed connection, a detachable connection, or an integral connection; "connected" can refer to a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0083] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0084] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A heat exchange system, characterized in that: include: a first heat exchanger, wherein the first heat exchanger is provided with a connecting pipe; a capillary tube comprising an outlet end, wherein the outlet end is in communication with the connecting tube; A muffler is wrapped around at least a portion of the outer side walls of the capillary tube and the connecting tube, and the connection point between the capillary tube and the connecting tube is located inside the muffler.

2. The heat exchange system according to claim 1, characterized in that: The muffler comprises: a channel, wherein a connection point between the capillary tube and the connecting tube is located in the channel, a first gap is defined between the capillary tube and an inner wall surface of the channel, and a second gap is defined between the connecting tube and the inner wall surface of the channel; A sound-absorbing medium is filled in the first gap and the second gap, and the sound-absorbing medium wraps the connection between the capillary tube and the connecting tube along the circumference of the channel.

3. The heat exchange system according to claim 2, characterized in that: The sound-absorbing medium includes a particle medium or a foam medium.

4. The heat exchange system according to claim 2, characterized in that: Also includes: A transition pipe, wherein the outlet end of the capillary tube is connected to the connecting pipe through the transition pipe, the silencing medium is at least filled between the transition pipe and the inner wall surface of the channel, and the silencing medium is wrapped around the outside of the transition pipe along the circumference of the transition pipe, and the cross-sectional area of ​​the transition pipe gradually increases along the direction from the capillary tube to the connecting pipe.

5. The heat exchange system according to claim 2, characterized in that: The ratio of the thickness of the silencing medium in the first gap to the diameter of the capillary tube is greater than or equal to 10% and less than or equal to 80%; or The ratio of the thickness of the silencing medium in the second gap to the diameter of the connecting pipe is greater than or equal to 10% and less than or equal to 80%.

6. The heat exchange system according to claim 2, characterized in that: A difference between a thickness of the first gap and a thickness of the second gap is greater than or equal to 0 mm and less than or equal to 20 mm.

7. The heat exchange system according to claim 2, characterized in that: The muffler further comprises: The first muffler shell is provided with a first groove; The second muffler shell is provided with a second groove, and the first muffler shell and the second muffler shell are buckled together so that the first groove and the second groove enclose the channel.

8. The heat exchange system according to claim 7, characterized in that: Also includes: A connecting piece, through which the first muffler shell and the second muffler shell are locked.

9. The heat exchange system according to any one of claims 1 to 8, characterized in that: Also includes: a second heat exchanger, the second heat exchanger being in communication with an inlet end of the capillary tube; A compressor, wherein the exhaust port of the compressor is communicated with the second heat exchanger, and the first heat exchanger is communicated with the air inlet of the compressor.

10. A refrigeration device, characterized in that: include: The heat exchange system according to any one of claims 1 to 9.

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