Piping assembly, method of constructing the same, heat exchange system, and heat exchange device

Abstract

The application relates to the technical field of heat exchange, and discloses a piping assembly, which comprises a first pipe body for containing low-temperature refrigerant and a second pipe body for containing high-temperature refrigerant, the first pipe body and the second pipe body being in communication; wherein the first pipe body and the second pipe body are spaced apart, and the distance value L of the spacing satisfies the following relationship: Q L ≤ n%Q0, wherein Q L is the heat exchange amount between the first pipe body and the second pipe body corresponding to the distance value L, and Q0 is the heat exchange amount between the first pipe body and the second pipe body when the spacing between the first pipe body and the second pipe body satisfies a preset condition. The application further discloses a construction method of the piping assembly, a heat exchange system and a heat exchange device.

Description

Technical Field

[0001] This application relates to the field of heat exchange technology, such as a piping assembly and its construction method, a heat exchange system, and a heat exchange device. Background Technology

[0002] Currently, most heat exchange devices use piping and refrigerant as core functional components. For example, in an air-cooled refrigerator or freezer, the refrigeration components include at least a compressor, evaporator, return gas pipe assembly, anti-condensation pipe, and condenser. The return gas pipe assembly consists of a return gas pipe and a capillary tube, which are interconnected and welded together. Its main function is to increase the superheat of the low-temperature gaseous refrigerant at the evaporator outlet and increase the subcooling of the high-temperature liquid refrigerant in the capillary tube. The return gas pipe contains low-temperature gaseous refrigerant, while the capillary tube contains high-temperature liquid refrigerant. The anti-condensation pipe connects to the condenser outlet and its main function is to prevent condensation at the refrigerator or freezer opening. The anti-condensation pipe contains high-temperature liquid refrigerant.

[0003] To reduce overall size and optimize layout, the return gas pipe assembly and the anti-condensation pipe are positioned adjacent to each other in related technologies. This solves the pipe layout problem, saves length, and reduces manufacturing costs.

[0004] However, in the process of implementing the embodiments of this disclosure, at least the following problems have been found in the related art:

[0005] In an adjacent arrangement of the return gas pipe assembly and the anti-condensation pipe, since the return gas pipe contains low-temperature gaseous refrigerant and the anti-condensation pipe contains high-temperature liquid refrigerant, if they are too close together, there will be significant heat transfer between them, resulting in the return gas pipe losing cooling capacity and the anti-condensation pipe losing heat. This negatively impacts the efficiency of both the return gas pipe assembly and the anti-condensation pipe. Conversely, if they are too far apart, connecting the pipes becomes inconvenient, increasing pipe length and wasting overall product space, which is detrimental to cost reduction and miniaturization. Summary of the Invention

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0007] This disclosure provides a piping assembly and its construction method, a heat exchange system, and a heat exchange device, which provide optimized structural design and pipeline layout based on heat exchange considerations. This can improve space utilization, reduce costs, and reduce the adverse effects of heat exchange on the refrigerant.

[0008] This disclosure provides a piping assembly, including: a first pipe body for containing a low-temperature refrigerant; and a second pipe body for containing a high-temperature refrigerant, wherein the first pipe body and the second pipe body are connected in communication; wherein there is a gap between the first pipe body and the second pipe body, and the distance L of the gap satisfies the following relationship: , where Q L Q0 represents the heat exchange between the first and second tubes corresponding to the distance value L, and Q0 represents the heat exchange between the first and second tubes when the interval between the first and second tubes meets the preset conditions. n is a positive number less than or equal to 10.

[0009] This disclosure also provides a heat exchange system, including: a compressor, which includes an exhaust port and a return port; a condenser, the inlet end of which is connected to the exhaust port of the compressor; an evaporator, one end of which is connected to the outlet end of the condenser; and the aforementioned piping assembly; wherein, a first pipe body includes a return pipe, a second pipe body includes an anti-condensation pipe, the other end of the evaporator is connected to the return port through the return pipe, and the compressor is connected to the outlet end of the condenser or the exhaust port of the compressor through the anti-condensation pipe.

[0010] This disclosure also provides a heat exchange device, including the aforementioned piping assembly or the aforementioned heat exchange system.

[0011] This disclosure also provides a method for constructing a piping assembly, the method comprising:

[0012] When the interval between the first tube and the second tube meets the preset conditions, the heat exchange between the first tube and the second tube is determined to be Q0.

[0013] Based on the distance L, determine the heat exchange Q between the first and second tubes. L ;

[0014] According to the relation Construct a piping assembly, where n is a positive number less than or equal to 10.

[0015] The piping components and their construction methods, as well as the heat exchange devices provided in this disclosure, can achieve the following technical effects:

[0016] Based on the first tube for containing the low-temperature refrigerant and the second tube for containing the high-temperature refrigerant, according to the heat exchange Q between the two... L The relationship between the distance value L and the spacing is used to construct the layout of the piping assembly. The embodiments of this disclosure can reduce heat exchange losses between the two components, improve their respective working efficiency, facilitate pipe connections, avoid excessive consumption of pipes or intermediate materials, and effectively utilize the overall space of the product.

[0017] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0018] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0019] Figure 1 This is a schematic diagram of the structure of a piping assembly according to an embodiment of the present disclosure;

[0020] Figure 2 This is a cross-sectional schematic diagram of a piping assembly according to another embodiment of the present disclosure;

[0021] Figure 3 This is the corresponding information provided in this public disclosure. Figure 2 A top cross-sectional schematic diagram of the piping assembly in an embodiment;

[0022] Figure 4 This is a top cross-sectional schematic diagram of a piping assembly according to another embodiment of the present disclosure;

[0023] Figure 5 The above correspondence provided in this disclosure Figure 4 A cross-sectional schematic diagram of the piping assembly in an embodiment;

[0024] Figure 6 This is a flowchart of a method for constructing a piping assembly according to an embodiment of the present disclosure;

[0025] Figure 7 It is a fitting curve of the construction method of the above embodiments provided in this disclosure;

[0026] Figure 8 This is an overall schematic diagram of a heat exchange device according to one embodiment of the present disclosure.

[0027] Figure Labels

[0028] 10: Piping assembly; 11: First pipe body; 12: Second pipe body; 13: Limiting element; 14: Foaming layer; 15: Capillary tube; 20: Heat exchange device; 30: Spacing; 100: Heat exchange system; 131: First limiting part; 132: Second limiting part; 133: Connecting bridge; 1301: First mounting groove; 1302: Second mounting groove. Detailed Implementation

[0029] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0030] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0031] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0032] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0033] Unless otherwise stated, the term "multiple" means two or more.

[0034] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0035] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0037] like Figure 1 As shown, this embodiment of the present disclosure provides a piping assembly 10, including a first pipe body 11 and a second pipe body 12. A gap 30 is present between the first pipe body 11 and the second pipe body 12. The first pipe body 11 is used to contain a low-temperature refrigerant, and the second pipe body 12 is used to contain a high-temperature refrigerant. The first pipe body 11 and the second pipe body 12 are directly or indirectly connected to allow the refrigerant to circulate and operate.

[0038] The distance L between the first tube 11 and the second tube 12, 30, satisfies the following relationship:

[0039]

[0040] Q L The heat exchange between the first tube 11 and the second tube 12 corresponds to the distance value L. Q0 is the heat exchange between the first tube 11 and the second tube 12 when the interval 30 between the first tube 11 and the second tube 12 meets the preset conditions. n is a positive number less than or equal to 10. That is to say, the spacing between the first tube 11 and the second tube 12 is set based on the heat exchange, so that the spacing setting not only avoids the distance being too close, avoiding excessive heat exchange loss, but also avoids the distance being too far, preventing the overall size from being too large.

[0041] Specifically, the first pipe body 11 includes a return pipe, and the second pipe body 12 includes a condensation prevention pipe.

[0042] like Figure 1 As shown, the piping assembly 10 further includes a foam layer 14, which fills the space between the first pipe body 11 and the second pipe body 12. Optionally, after foaming material is injected between the first pipe body 11 and the second pipe body 12, the foaming material reacts and solidifies to form the foam layer 14, thereby surrounding and isolating the first pipe body 11 and the second pipe body 12. The foaming material is, for example, cycloisopentane. It can be understood that the distance L between the first pipe body 11 and the second pipe body 12 (30) is also the thickness of the foam layer 14 between the first pipe body 11 and the second pipe body 12. The amount or injection method of the foaming material can be determined based on the distance L, thereby constructing the piping assembly 10 more efficiently.

[0043] In other words, although there is a gap between the first tube 11 and the second tube 12, it is filled by the foam layer 14. In the heat exchange relationship, there is no additional medium or a tiny, inconsequential medium between the first tube 11 and the foam layer 14, and between the foam layer 14 and the second tube 12.

[0044] Furthermore, although there may be a first pipe 11 and a second pipe 12 with curved or inclined directions, this disclosure embodiment only illustrates adjacent and unidirectional first pipe 11 and second pipe 12. For example... Figure 1 As shown, the first pipe body 11 and the second pipe body 12, which are in the same direction and of equal length, are used as calculation units. The refrigerant temperature distribution within the calculation unit is uniform, with no or minimal heat exchange in the axial direction. Heat transfer only occurs between the refrigerants in the first pipe body 11 and the second pipe body 12 in the radial direction. Therefore, those skilled in the art can add conditions and make deductions based on this.

[0045] In this embodiment of the disclosure, the heat exchange Q between the first tube 11 and the second tube 12 corresponding to the distance value L is... L The following formula can be used to calculate:

[0046]

[0047] A1 is the heat transfer area of ​​the first tube 11, T2 is the inner surface temperature of the second tube 12, T1 is the inner surface temperature of the first tube 11, h1 is the convective heat transfer coefficient of the inner surface of the first tube 11, δ1 is the wall thickness of the first tube 11, λ1 is the thermal conductivity of the first tube 11, λ0 is the thermal conductivity of the foam layer 14, δ2 is the wall thickness of the second tube 12, λ2 is the thermal conductivity of the second tube 12, and h2 is the convective heat transfer coefficient of the inner surface of the second tube 12.

[0048] The above parameters are set according to the specific configuration of the first tube 11 and the second tube 12. For example, the first tube 11 is a return gas tube, and its parameters include: T1: inner surface temperature of the return gas tube, unit: ℃; δ1: wall thickness of the return gas tube, unit: mm; λ1: thermal conductivity of the return gas tube, unit: W / (m·K); h1: convective heat transfer coefficient of the inner surface of the return gas tube, unit: W / (m²·K). 2 ·K); A1: Heat exchange area of ​​the return gas pipe calculation unit, unit: m² 2 .

[0049] For example, the second tube 12 is an anti-condensation tube, and its parameters include: T2: inner surface temperature of the anti-condensation tube, unit: ℃; δ2: wall thickness of the anti-condensation tube, unit: mm; λ2: thermal conductivity of the anti-condensation tube, unit: W / (m·K); h2: convective heat transfer coefficient of the inner surface of the anti-condensation tube, unit: W / (m²·K). 2 ·K).

[0050] For those skilled in the art, the parameters and their units described above can be replaced with other equivalent parameters and their units without affecting the implementation of this embodiment.

[0051] Furthermore, preset conditions can be set for interval 30, such as setting interval 30 to meet installation conditions. For example, the distance value L0 of interval 30 can be set to 0 or the minimum design thickness of the foam layer 14. Then, the corresponding heat exchange rate Q0 can be calculated using the formula:

[0052]

[0053] The heat exchange Q0 between the first tube 11 and the second tube 12 is obtained when the interval 30 between the first tube 11 and the second tube 12 meets the preset conditions.

[0054] like Figures 2 to 3 As shown, in another embodiment of the present disclosure, the piping assembly 10 further includes a limiting member 13 disposed between the first pipe body 11 and the second pipe body 12. By first installing the limiting member 13 between the first pipe body 11 and the second pipe body 12 to limit the distance between the first pipe body 11 and the second pipe body 12, and then filling the space between the first pipe body 11 and the second pipe body 12 with a foam layer 14, the positional relationship between the first pipe body 11 and the second pipe body 12 is ensured, and the filling of the foam layer 14 may cause positional changes in the first pipe body 11 or the second pipe body 12. Furthermore, the foam layer 14 wraps around and fixes the limiting member 13, thus ensuring that the relative position of the piping assembly 10 can be stably set.

[0055] Optionally, the limiting member 13 is made of plastic, which has very poor thermal conductivity, and its heat exchange Q between the first tube 11 and the second tube 12 can be ignored. L The impact.

[0056] In this embodiment, the limiting member 13 adopts a sheet-like structure to radially position the first tube 11 and the second tube 12, thereby ensuring that the interval 30 between the first tube 11 and the second tube 12 satisfies the above-mentioned relationship.

[0057] More, such as Figure 3 As shown, the limiting member 13 includes: a first limiting part 131 for accommodating the first tube 11; a second limiting part 132 for accommodating the second tube 12; and a connecting bridge 133 disposed between the first limiting part 131 and the second limiting part 132. The first limiting part 131 and the first tube 11, and the second limiting part 132 and the second tube 12 are in close contact with each other.

[0058] Optionally, the connecting bridge 133 is integrally formed between the first limiting portion 131 and the second limiting portion 132. The length of the connecting bridge 133 is less than or equal to the distance value L. For example, when the distance value L is 20 mm, the length of the connecting bridge 133 of the limiting member 13 is 19 mm. By limiting the radial direction of the connecting bridge 133, the distance value L of the gap 30 between the first tube body 11 and the second tube body 12 can be guaranteed, preventing the gap 30 from being expanded or compressed during the assembly or filling of the foam layer 14.

[0059] The first limiting part 131 and the second limiting part 132 may have the same structure or different structures. Based on the different pipe diameters and pipeline routes of the first pipe body 11 and the second pipe body 12, the first limiting part 131 and the second limiting part 132 may be in the form of receiving holes, receiving grooves, snap-fit ​​structures, etc.

[0060] like Figure 4 and Figure 5 As shown, in another embodiment provided in this disclosure, the piping assembly 10 further includes a capillary tube 15 for containing high-temperature refrigerant.

[0061] Optionally, the first tube 11 contains a low-temperature gaseous refrigerant, the capillary tube 15 contains a high-temperature liquid refrigerant, and the second tube 12 contains a high-temperature liquid refrigerant.

[0062] In this embodiment, the first pipe 11 is a return pipe, and the second pipe 12 is an anti-condensation pipe. The first pipe 11 and the capillary tube 15 can form a return pipe assembly. The refrigerant flows sequentially through the second pipe 12, the dryer filter, the capillary tube 15, the evaporator, and the first pipe 11. The refrigerant in the capillary tube 15 and the refrigerant in the second pipe 12 have approximately the same temperature, and there is little or no heat exchange between them. Therefore, in the piping assembly 10, the main heat exchange is between the first pipe 11 and the second pipe 12. While maintaining a distance L of 30 mm, the heat exchange between the first pipe 11 and the second pipe 12 can also be ignored, ensuring the refrigerant's operating efficiency.

[0063] Furthermore, the first limiting part 131 includes a first mounting groove 1301 for mounting the first tube 11. The second limiting part 132 includes a second mounting groove 1302 for mounting the second tube 12. The first mounting groove 1301 and the second mounting groove 1302 respectively surround the first tube 11 and the second tube 12, and provide radial openings to facilitate the installation of the first tube 11 and the second tube 12 into the first mounting groove 1301 and the second mounting groove 1302 through the openings.

[0064] In this embodiment, with Figure 3The difference lies in the fact that there are gaps between the first limiting part 131 and the first tube 11, and between the second limiting part 132 and the second tube 12, which are subsequently filled with the foam layer 14. For example, the first limiting part 131 has a plurality of radially inward protrusions that contact the first tube 11 to surround and mount the first tube 11, and there are gaps between adjacent protrusions to accommodate the foam layer 14.

[0065] Optionally, the first limiting part 131 includes a plurality of first mounting slots 1301. The plurality of first mounting slots 1301 are respectively used to mount the first tube body 11 and the capillary tube 15. The first tube body 11 and the capillary tube 15 are positioned relative to each other by the first limiting part 131. For example, during the assembly process, the capillary tube 15 is first placed into the first mounting slot 1301 between two adjacent protrusions, and then the first tube body 11 is placed into the first mounting slot 1301 surrounded by the plurality of protrusions, or the first tube body 11 is placed into the first mounting slot 1301 between another two adjacent protrusions.

[0066] It is worth mentioning that the connecting bridge 133 not only ensures the relative distance between the first tube 11 and the second tube 12, but also ensures the relative distance between the capillary tube 15 and the second tube 12. The length of the connecting bridge 133 is less than or equal to the distance value L.

[0067] This disclosure also provides a method for constructing a piping assembly 10, such as... Figure 6 As shown, the method for constructing the piping assembly 10 includes:

[0068] S01, when the interval 30 between the first tube 11 and the second tube 12 meets the preset conditions, the heat exchange between the first tube 11 and the second tube 12 is determined to be Q0.

[0069] S02, Based on the distance value L, determine the heat exchange Q between the first tube 11 and the second tube 12. L ;

[0070] S03, according to the relation Construct a piping assembly, where n is a positive number less than or equal to 10.

[0071] Optionally, n can be 3, 5, 6, 7, 8, or 9, or it can be selected from values ​​such as 1.1, 3.5, 5.2, 7.8, 8.6, or 9.9. For example, when n is 5, the relationship is: .

[0072] like Figure 6 and Figure 7 As shown, in the construction method of this embodiment, S01 includes: determining the heat exchange between the first tube 11 and the second tube 12 as Q0 based on a preset curve. For example, based on... Figure 7According to the preset curve shown, when the distance L0 between the first tube 11 and the second tube 12 is ≤1mm, the heat exchange between the first tube 11 and the second tube 12 is determined to be Q0.

[0073] In another feasible implementation, S01 includes: when the distance value of the interval 30 is a preset threshold L0, calculating the heat exchange Q0 according to a preset formula, the preset formula being as follows:

[0074]

[0075] A1 is the heat transfer area of ​​the first tube 11, T2 is the inner surface temperature of the second tube 12, T1 is the inner surface temperature of the first tube 11, h1 is the convective heat transfer coefficient of the inner surface of the first tube 11, δ1 is the wall thickness of the first tube 11, λ1 is the thermal conductivity of the first tube 11, λ0 is the thermal conductivity of the foam layer 14, δ2 is the wall thickness of the second tube 12, λ2 is the thermal conductivity of the second tube 12, and h2 is the convective heat transfer coefficient of the inner surface of the second tube 12.

[0076] In other words, the preset condition is that the distance value at intervals of 30 is the preset threshold L0, which can be equal to 0 or close to 0. For example, the preset threshold L0 can be 0.1mm, 0.5mm, 1mm, 1.2mm, or 1.5mm.

[0077] Depending on different design requirements, preset conditions in step S01 can be set, such as setting the interval 30 to meet installation conditions. For example, the distance value L0 of interval 30 can be set to zero or the minimum design thickness of the foam layer 14. Then, the corresponding heat exchange Q0 can be calculated using a preset formula.

[0078] In the construction method of this embodiment, step S02 includes: calculating the heat exchange rate Q according to a preset formula. L The preset formula is as follows:

[0079]

[0080] A1 is the heat transfer area of ​​the first tube 11, T2 is the inner surface temperature of the second tube 12, T1 is the inner surface temperature of the first tube 11, h1 is the convective heat transfer coefficient of the inner surface of the first tube 11, δ1 is the wall thickness of the first tube 11, λ1 is the thermal conductivity of the first tube 11, λ0 is the thermal conductivity of the foam layer 14, δ2 is the wall thickness of the second tube 12, λ2 is the thermal conductivity of the second tube 12, and h2 is the convective heat transfer coefficient of the inner surface of the second tube 12.

[0081] In the construction method of this embodiment, step S03 includes: determining n based on the stable trend of a preset curve, and then according to the relational formula. Construct piping assembly 10. Optionally, based on, as shown below... Figure 6 The preset curve shown indicates that the heat transfer rate Q starts to decrease more slowly with increasing distance. The heat transfer rate Q at this point is then determined. L And determine that the numerical relationship with Q0 is n%. For example, the heat transfer Q at which the curve begins to stabilize can be determined based on the change in the slope and / or gradient of the curve, i.e., the rate of decrease in the heat transfer Q. L And determine the value of n.

[0082] For example, such as Figure 6 As shown, when the distance L0 between the first tube 11 and the second tube 12 is 1 mm, the heat exchange Q0 is 100 W; when the distance L0 between the first tube 11 and the second tube 12 is 20 mm, the heat exchange Q0 is 100 W. L If the value is 5W, then the piping assembly 10 is constructed based on L≥20mm. This allows us to determine the specific value or range of distance L. For example, the distance between the return pipe and the anti-condensation pipe can range from 15mm to 25mm. Those skilled in the art will understand that the specific values ​​are merely examples and do not represent the actual parameters of the product, nor do they constitute a specific numerical limitation for this embodiment.

[0083] Therefore, the heat exchange between refrigerants within the piping assembly 10 constructed in this way is extremely small, and its impact on the refrigerant can be ignored, thus ensuring the working efficiency of refrigerant flow. Furthermore, increasing the distance will not significantly reduce the heat exchange, avoiding unnecessary increases in product size and preventing waste of piping and foaming materials.

[0084] In this embodiment of the disclosure, the preset curve in step S03 can be pre-set. For different first tubes 11 and second tubes 12, a preset curve is established to determine the heat exchange Q corresponding to when the curve begins to stabilize. L That is, to determine the relation. .

[0085] In another feasible embodiment, the preset curve is obtained through induction or fitting. Based on the parameters of the first tube 11 and the second tube 12, the heat exchange between the first tube 11 and the second tube 12 is calculated by controlling the distance value as a variable. The preset curve is fitted using the relationship between discrete distance values ​​and heat exchange, thereby determining the heat exchange Q corresponding to when the curve begins to stabilize. L That is, to determine the relation. .

[0086] The piping assembly 10 obtained by the above construction method can not only reduce the heat exchange loss between high-temperature refrigerant and low-temperature refrigerant and improve the working efficiency of refrigerant, but also facilitate pipeline connection, avoid consuming too much pipe material or intermediate foaming material, and effectively utilize the overall space of the product.

[0087] like Figure 8 As shown, this disclosure provides a heat exchange system 100. The heat exchange system 100 provides cooling or heating functions and is suitable for a heat exchange device 20. The heat exchange device 20 includes a piping assembly 10 or the heat exchange system 100.

[0088] like Figure 8 As shown in the illustration, the heat exchange device 20 is used as a freezer as an example in this embodiment. However, the heat exchange device 20 is not limited to this and can also be used as a refrigerator, ice maker, air conditioner, water heater and other electrical appliances.

[0089] In this embodiment, the heat exchange system 100 includes a compressor, a condenser, an evaporator, and the piping assembly 10. The compressor includes an exhaust port and a return port. The inlet end of the condenser is connected to the exhaust port of the compressor. One end of the evaporator is connected to the outlet end of the condenser, and the other end of the evaporator is connected to the return port via the first pipe body 11 of the piping assembly 10. The compressor is connected to either the outlet end of the condenser or the exhaust port of the compressor via the second pipe body 12 of the piping assembly 10. Optionally, the first pipe body 11 is used to contain low-temperature gaseous refrigerant, and the second pipe body 12 is used to contain high-temperature liquid refrigerant.

[0090] For simplicity, this disclosure primarily uses piping assembly 10 as an example. Those skilled in the art can adapt piping assembly 10 to other feasible heat exchange systems and connect it to other components within the heat exchange system. Specifically, a first pipe body 11 is used to contain the low-temperature refrigerant, and a second pipe body 12 is used to contain the high-temperature refrigerant. Here, "low-temperature" and "high-temperature" refer to the relative temperatures of the refrigerants inside the first pipe body 11 and the second pipe body 12, without any specific numerical limitation on the refrigerant.

[0091] For example, in heat exchange devices 20 such as air-cooled refrigerators and freezers, the distance L between the return gas pipe assembly (first pipe body 11 and capillary tube 15) and the anti-condensation pipe (second pipe body 12) is ≥20mm, and the impact of their heat exchange on the cooling effect is negligible. This reduces the cooling capacity of the return gas pipe assembly and the heat loss of the anti-condensation pipe, saving costs and reducing energy consumption. Based on this, the distance between the return gas pipe assembly and the anti-condensation pipe can be appropriately increased according to design requirements.

[0092] For other types of heat exchange systems or heat exchange devices, optimal distance values ​​can be derived based on the construction method and piping assembly structure of the embodiments of this disclosure (which can be calculated based on the principle of heat transfer similarity and dimensional analysis), all of which fall within the scope of this disclosure.

[0093] Furthermore, the piping components and their construction methods are not only applicable to refrigerators and freezers, but also to other similar dual-pipe limiting structures or installation arrangements.

[0094] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A piping assembly for heat exchange, characterized in that, include: The first tube is used to contain the low-temperature refrigerant; as well as The second tube is used to contain high-temperature refrigerant, and the first tube is connected to the second tube. Wherein, there is a gap between the first tube and the second tube, and the distance L of the gap satisfies the following relationship: ， Among them, Q L The heat exchange between the first tube and the second tube corresponding to the distance value L is Q0, which is the heat exchange between the first tube and the second tube when the interval between the first tube and the second tube meets the preset condition, and n is a positive number less than or equal to 10; the preset condition is that the distance value of the set interval is zero.

2. The piping assembly according to claim 1, characterized in that, Also includes: A foam layer is filled between the first tube and the second tube; the preset condition is that the distance value of the set interval is zero or the minimum design thickness of the foam layer; in, , A1 is the heat transfer area of ​​the first tube calculation unit, T2 is the inner surface temperature of the second tube, T1 is the inner surface temperature of the first tube, h1 is the convective heat transfer coefficient of the inner surface of the first tube, δ1 is the wall thickness of the first tube, λ1 is the thermal conductivity of the first tube, λ0 is the thermal conductivity of the foam layer, δ2 is the wall thickness of the second tube, λ2 is the thermal conductivity of the second tube, and h2 is the convective heat transfer coefficient of the inner surface of the second tube.

3. The piping assembly according to claim 1 or 2, characterized in that, Also includes: A limiting element is disposed between the first tube body and the second tube body.

4. The piping assembly according to claim 3, characterized in that, The limiting component includes: The first limiting part accommodates the first tube body; The second limiting portion accommodates the second tube body; and A connecting bridge is disposed between the first limiting part and the second limiting part, wherein the length of the connecting bridge is less than or equal to the distance value L.

5. The piping assembly according to claim 4, characterized in that, in, The first limiting part includes: a first mounting groove for mounting the first tube body; and The second limiting part includes: a second mounting groove for mounting the second tube body.

6. The piping assembly according to claim 4, characterized in that, Also includes: Capillary tubes are used to contain high-temperature refrigerants; The first limiting part includes a plurality of first mounting slots, which are respectively used to install the first tube body and the capillary tube.

7. A heat exchange system, characterized in that, include: The compressor includes an exhaust port and an exhaust port; A condenser, the inlet end of which is connected to the exhaust port of the compressor; An evaporator, one end of which is connected to the outlet end of the condenser; and Piping assembly as claimed in any one of claims 1 to 6; The first pipe body includes a return pipe, the second pipe body includes an anti-condensation pipe, the other end of the evaporator is connected to the return port through the return pipe, and the compressor is connected to the outlet end of the condenser or the exhaust port of the compressor through the anti-condensation pipe.

8. A heat exchange device, characterized in that, include: Piping assembly as claimed in any one of claims 1 to 6; or The heat exchange system as described in claim 7.

9. A method for constructing a piping assembly, used to construct a piping assembly as described in any one of claims 1 to 6, characterized in that, The method includes: When the interval between the first tube and the second tube meets a preset condition, the heat exchange between the first tube and the second tube is determined to be Q0; the preset condition is that the distance of the set interval is zero. The heat exchange rate Q between the first tube and the second tube is determined based on the distance L between them. L ; According to the relation Construct the piping assembly, where n is a positive number less than or equal to 10.

10. The method according to claim 9, characterized in that, The first pipe body includes a return pipe, the second pipe body includes an anti-condensation pipe, and the piping assembly further includes a foam layer, which fills the space between the return pipe and the anti-condensation pipe; the preset condition is that the distance value of the set interval is zero or the minimum design thickness of the foam layer. The heat exchange rate Q between the first tube and the second tube is determined based on the distance L between them. L The steps include: The heat exchange Q between the return pipe and the anti-condensation pipe is calculated according to the preset formula. L The preset formula is as follows: ， Where A1 is the heat transfer area of ​​the return pipe calculation unit, T2 is the inner surface temperature of the anti-condensation pipe, T1 is the inner surface temperature of the return pipe, h1 is the convective heat transfer coefficient of the inner surface of the return pipe, δ1 is the wall thickness of the return pipe, λ1 is the thermal conductivity of the return pipe, λ0 is the thermal conductivity of the foaming layer, δ2 is the wall thickness of the anti-condensation pipe, λ2 is the thermal conductivity of the anti-condensation pipe, and h2 is the convective heat transfer coefficient of the inner surface of the anti-condensation pipe.

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