Pipeline structure, heat exchanger and air conditioner

Abstract

The application provides a pipeline structure, a heat exchanger and an air conditioner, relates to the technical field of air conditioners, and solves the technical problem that the heat exchanger in the prior art cannot realize different flow paths for cooling and heating modes, resulting in an unsatisfactory system performance. The pipeline valve has a pipeline chamber, a first outlet, a second outlet and a third outlet which are communicated with the pipeline chamber; a valve core, a sliding channel and a connecting channel are arranged in the pipeline chamber, the connecting channel is used for connecting the first outlet and the second outlet, and the sliding channel is used for connecting the first outlet and the third outlet; the valve core is matched with the sliding channel, and the valve core reciprocally moves in the sliding channel to close the first outlet or the third outlet; when the valve core closes the first outlet, the sliding channel connects the second outlet and the third outlet; and when the valve core closes the third outlet, the connecting channel connects the first outlet and the second outlet. The application is used for providing a pipeline valve capable of improving the system performance of a heat exchanger.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, in particular to a pipeline structure, a heat exchanger and an air conditioner. BACKGROUND

[0002] When designing a heat exchanger, an air conditioning system designer often needs to optimize the number of branches. The number of branches of the heat exchanger affects the mass flow rate of the refrigerant, and the mass flow rate is related to the heat exchange coefficient and pressure loss of the refrigerant. If the number of branches is small, the refrigerant flow rate is large, the heat exchange coefficient is large, and the pressure loss increases; if the number of branches is large, the refrigerant flow rate is small, the heat exchange coefficient is small, and the pressure loss decreases. To achieve better heat exchange effect, it is necessary to increase the heat exchange coefficient of the refrigerant as much as possible and reduce its pressure loss, which requires the designer to consider the influence of both aspects when designing the number of branches. However, the optimal number of branches for cooling mode and heating mode is often inconsistent. Because the working state of the heat exchanger is different in cooling and heating, more branches are often beneficial to the performance of the refrigeration system, but not conducive to the heating performance. SUMMARY

[0003] The purpose of the present application is to provide a pipeline structure, a heat exchanger and an air conditioner to solve the technical problem that the heat exchanger in the prior art cannot realize different flow paths for cooling and heating modes, resulting in unsatisfactory system performance. The preferred technical solutions in the many technical solutions provided by the present application can produce many technical effects, which are described in detail below.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0005] The pipeline valve provided by the present application has a pipeline chamber, a first outlet, a second outlet and a third outlet connected to the pipeline chamber;

[0006] The valve core, the sliding channel and the connecting channel are arranged in the pipeline chamber, the connecting channel is used to connect the first outlet and the second outlet, and the sliding channel is used to connect the first outlet and the third outlet;

[0007] The valve core is adapted to the sliding channel, and the valve core reciprocally moves in the sliding channel to close the first outlet or to close the third outlet;

[0008] When the valve core closes the first outlet, the sliding channel guides the second outlet and the third outlet;

[0009] When the valve core closes the third outlet, the connecting channel and the sliding channel guide the first outlet and the second outlet.

[0010] Preferably, the first outlet and the second outlet are on the same axis, the third outlet is arranged between the first outlet and the second outlet, and is arranged perpendicularly to the first outlet.

[0011] Preferably, the connecting channel is enclosed in the periphery of the sliding channel and communicates with the sliding channel.

[0012] Preferably, the valve core is a spherical structure, and the sliding channel is a circular tubular channel matched with the valve core.

[0013] A pipeline structure comprising the pipeline valve as described above.

[0014] Preferably, the pipeline structure comprises a first connecting pipeline, the first connecting pipeline comprises four groups of the pipeline valves, the four groups of the pipeline valves are connected in sequence, and in two adjacent pipeline valves, the third outlet of the first pipeline valve is connected to the first outlet of the second pipeline valve through a pipeline.

[0015] Preferably, the pipeline structure further comprises a second connecting pipeline, the second connecting pipeline comprises four groups of the pipeline valves, the four groups of the pipeline valves are connected in sequence, and in two adjacent pipeline valves, the first outlet of the first pipeline valve is connected to the third outlet of the second pipeline valve through a pipeline.

[0016] A heat exchanger comprising the pipeline structure as described above.

[0017] Preferably, the heat exchanger comprises a double-row finned tube heat exchanger main body, at least one first connecting pipeline, at least one second connecting pipeline, and a plurality of U-shaped tubes, wherein:

[0018] The first connecting pipeline comprises four groups of the pipeline valves, the four groups of the pipeline valves are connected in sequence, and in two adjacent pipeline valves, the third outlet of the first pipeline valve is connected to the first outlet of the second pipeline valve through a pipeline.

[0019] The second connecting pipeline comprises four groups of the pipeline valves, the four groups of the pipeline valves are connected in sequence, and in two adjacent pipeline valves, the first outlet of the first pipeline valve is connected to the third outlet of the second pipeline valve through a pipeline.

[0020] The four pipelines connected to the four second outlets of the at least one first connecting pipeline are respectively connected to two rows of interfaces of the heat exchanger main body, the pipeline connected to the first outlet is connected to a refrigerant inlet pipe, and the pipeline connected to the third outlet is connected to a refrigerant outlet pipe.

[0021] At least one second connecting pipeline is connected between at least two first connecting pipelines, and four pipelines connected to four second outlets are respectively connected to adjacent two rows of interfaces of the heat exchanger main body, the pipeline connected to the first outlet is connected to the refrigerant outlet pipeline, and the pipeline connected to the third outlet is connected to the refrigerant inlet pipeline.

[0022] Other interfaces on the double-row finned tube heat exchanger main body are connected through U-shaped tubes.

[0023] An air conditioner comprises the heat exchanger.

[0024] The pipeline structure, the heat exchanger and the air conditioner have the following beneficial effects: the pipeline valve comprises a valve body, a valve core, a sliding channel and a connecting channel, the connecting channel is used to connect the first outlet and the second outlet, the sliding channel is used to connect the first outlet and the third outlet, the valve core is arranged in the sliding channel and can reciprocate in the sliding channel, so that the first outlet or the third outlet can be closed, when the valve core closes the first outlet, the second outlet and the third outlet are communicated through the connecting channel and the sliding channel, and the refrigerant can be discharged from the third outlet when entering the second outlet; when the valve core closes the third outlet, the first outlet and the second outlet can be communicated through the connecting channel, and the refrigerant can be discharged from the second outlet when entering the first outlet, so that the pipeline valve can change the entering position of the refrigerant, change the flow direction of the refrigerant, complete the switching of the refrigerant flow path, and improve the performance of the heat exchanger system. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0026] Figure 1 is a structure diagram of the pipeline valve of the present application;

[0027] Figure 2 is a structure diagram of the first connecting pipeline of the present application (one);

[0028] Figure 3 is a structure diagram of the first connecting pipeline of the present application (two);

[0029] Figure 4 is a structure diagram of the second connecting pipeline of the present application;

[0030] Figure 5 is a structural schematic diagram of a heat exchanger main body of the present application;

[0031] Figure 6 is a structural schematic diagram of a heat exchanger of the present application;

[0032] Figure 7 is a flow path schematic diagram of a refrigeration mode of the heat exchanger of the present application;

[0033] Figure 8 is a flow path schematic diagram of a heating mode of the heat exchanger of the present application;

[0034] Figure 9 is a flow path schematic diagram of a refrigeration mode and a heating mode of the heat exchanger of the present application.

[0035] In the drawings:

[0036] 100, pipe valve; 200, first connecting pipe; 300, second connecting pipe; 400, heat exchanger main body;

[0037] 110, pipe cavity; 120, first outlet; 130, second outlet; 140, third outlet; 150, valve core; 160, sliding channel; 170, connecting channel;

[0038] 410, refrigeration inlet pipe (heating outlet pipe); 420, heating inlet pipe (refrigeration outlet pipe); 430, U-shaped pipe;

[0039] a, b, c, d, e, f, connecting port. DETAILED DESCRIPTION

[0040] The following can be described with reference to the accompanying drawings Figures 1-9and the text content to understand the content of the present application and the difference between the present application and the prior art. The technical solutions of the present application (including the preferred technical solutions) are further described in detail below by means of the accompanying drawings and by listing some optional embodiments of the present application. It should be noted that any technical feature or any technical solution in the present embodiment is one or several of multiple optional technical features or optional technical solutions. In order to describe simply, all the alternative technical features and alternative technical solutions of the present application cannot be listed in the present document, and it is not convenient to emphasize that the implementation mode of each technical feature is one of the optional multiple implementation modes. Therefore, the person skilled in the art should know that any technical means provided by the present application can be replaced, or any two or more technical means or technical features provided by the present application can be combined to obtain a new technical solution. Any technical feature and any technical solution in the present embodiment do not limit the protection scope of the present application, and the protection scope of the present application should include any alternative technical solution that can be thought of by the person skilled in the art without creative labor and the new technical solution obtained by the person skilled in the art by combining any two or more technical means or technical features provided by the present application.

[0041] In the description of the present application, it should be noted that, unless otherwise specified, the meaning of "multiple" is two or more than two; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for description purposes and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present application, it should also be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] The present application provides a pipe structure, a heat exchanger and an air conditioner capable of changing the flow direction of refrigerant by changing the entering position of refrigerant, completing the switching of refrigerant flow path, and improving the performance of the heat exchanger system.

[0044] The following will be described in combination with Figures 1-9The technical solutions provided by the present application are described in more detail.

[0045] The present application provides a pipeline valve 100, as shown in the drawings, the pipeline valve 100 has a pipeline chamber 110 and a first outlet 120, a second outlet 130 and a third outlet 140 connected to the pipeline chamber 110. Figure 1

[0046] The pipeline chamber 110 is provided with a valve core 150, a sliding channel 160 and a connecting channel 170, the connecting channel 170 is used to connect the first outlet 120 and the second outlet 130, and the sliding channel 160 is used to connect the second outlet 130 and the third outlet 140.

[0047] The valve core 150 is matched with the sliding channel 160, and the valve core 150 reciprocally moves in the sliding channel 160 to close the first outlet 120 or to close the third outlet 140.

[0048] When the valve core 150 closes the first outlet 120, the sliding channel 160 guides the second outlet 130 and the third outlet 140.

[0049] When the valve core 150 closes the third outlet 140, the connecting channel 170 guides the first outlet 120 and the second outlet 130.

[0050] The pipeline valve 100 provided by the present application has a pipeline chamber 110, a first outlet 120, a second outlet 130 and a third outlet 140, the pipeline chamber 110 is provided with a valve core 150, a sliding channel 160 and a connecting channel 170, the connecting channel 170 is used to connect the first outlet 120 and the second outlet 130, and the sliding channel 160 is used to connect the first outlet 120 and the third outlet 140, the valve core 150 is arranged in the sliding channel 160 and can reciprocally move in the sliding channel 160, thereby being able to close the first outlet 120 or the third outlet 140, when the valve core 150 closes the first outlet 120, the second outlet 130 and the third outlet 140 are guided through the connecting channel 170 and the sliding channel 160, and when the valve core 150 closes the third outlet 140, the first outlet 120 and the second outlet 130 can be guided through the connecting channel 170, so that the pipeline valve 100 provided by the present application can change the flow direction of the refrigerant by changing the entering position of the refrigerant, complete the switching of the refrigerant flow path, and improve the performance of the heat exchanger system.

[0051] ​It should be noted that by adopting the plurality of pipeline valves 100 and by pipeline connection, more flow paths of the refrigerant flow path can be switched, so that different branch paths can be realized when the refrigeration and heating modes are used, and the refrigeration and heating modes do not restrict each other, the performance of the heat exchanger can be maximized, and the energy efficiency of the air conditioning system can be effectively improved.

[0052] In some embodiments of the present application, the first outlet 120 and the second outlet 130 are on the same axis, and the third outlet 140 is arranged between the first outlet 120 and the second outlet 130, and the third outlet 140 is arranged perpendicularly to the first outlet 120.

[0053] In some embodiments of the present application, the first outlet 120 and the second outlet 130 are on the same axis, and the third outlet 140 is arranged perpendicularly to the first outlet 120. Since the sliding channel 160 is connected between the first outlet 120 and the third outlet 140, when the refrigerant flows from the first outlet 120, the refrigerant can drive the valve core 150 to move to the third outlet 140 and block the third outlet 140, so that the refrigerant can flow from the first outlet 120 and flow out from the second outlet 130; when the refrigerant flows from the second outlet 130, the refrigerant can drive the valve core 150 to move to the first outlet 120 and block the first outlet 120, so that the refrigerant can flow from the second outlet 130 and flow out from the third outlet 140.

[0054] In specific applications, the first outlet 120 is connected with the refrigerant inlet pipe, the second outlet 130 and the third outlet 140 are respectively connected with the heat exchanger body 400, the refrigerant entering the first outlet 120 enters the heat exchanger body 400 through the second outlet 130, forming a flow path; and the refrigerant entering through the second outlet 130 can enter the heat exchanger body 400 from the third outlet 140, so that the flow path of the heat exchanger can be reasonably arranged according to the needs, and different combinations and switching of the flow path can be realized.

[0055] In some embodiments of the present application, the connecting channel 170 is enclosed around the periphery of the sliding channel 160 and communicates with the sliding channel 160.

[0056] In some embodiments of the present application, the connecting channel 170 is enclosed in the periphery of the sliding channel 160. When the refrigerant flows from the first outlet 120, the refrigerant can drive the valve core 150 to move towards the third outlet 140, and at the same time, the refrigerant directly flows to the second outlet 130 along the connecting channel 170, ensuring that the refrigerant can pass in time and effectively guaranteeing the smooth flow of the refrigerant. When the refrigerant flows from the second outlet 130, the refrigerant drives the valve core 150 to move towards the first outlet 120, and at this time, the refrigerant entering the second outlet 130 directly flows out from the third outlet 140, and the refrigerant flows smoothly, effectively guaranteeing the use effect of the heat exchanger.

[0057] In some embodiments of the present application, the valve core 150 is a spherical structure, and the sliding channel 160 is a circular tubular channel matched with the valve core 150. The valve core 150 is a spherical structure, and the sliding channel 160 is a circular tubular channel matched with the valve core 150, and the valve core 150 can more smoothly reciprocate in the sliding channel 160, thereby effectively guaranteeing the smooth switching of the refrigerant flow path.

[0058] The present application also provides a pipeline structure comprising the pipeline valve 100 as described above.

[0059] In some embodiments of the present application, as shown in Figures 2-3 The pipeline structure comprises a first connecting pipeline 200, and the first connecting pipeline 200 comprises four groups of the pipeline valve 100, and the four groups of the pipeline valve 100 are connected in sequence, and in the two adjacent pipeline valves 100, the third outlet 140 of the first pipeline valve 100 is connected with the first outlet 120 of the second pipeline valve 100 through a pipeline.

[0060] In some embodiments of the present application, the pipeline structure comprises a first connecting pipeline 200, and the first connecting pipeline 200 comprises four groups of the pipeline valve 100, and the four groups of the pipeline valve 100 are connected in sequence, and in the two adjacent pipeline valves 100, the third outlet 140 of the first pipeline valve 100 is connected with the first outlet 120 of the second pipeline valve 100 through a pipeline. After the four groups of the pipeline valve 100 are connected, six liquid inlet pipelines are formed, which are four pipelines connected to the four second outlets 130, a pipeline connected to the first outlet 120 of the first group of the pipeline valve 100, and a pipeline connected to the third outlet 140 of the fourth group of the pipeline valve 100.

[0061] In some embodiments of the present application, as shown in Figure 4As shown, the pipeline structure further comprises a second connecting pipeline 300, the second connecting pipeline 300 comprising four groups of the pipeline valves 100, the four groups of the pipeline valves 100 being connected in sequence, in the two adjacent pipeline valves 100, the first outlet 120 of the first pipeline valve 100 being connected with the third outlet 140 of the second pipeline valve 100 through a pipeline.

[0062] In some embodiments of the present application, the second connecting pipeline 300 comprises four groups of the pipeline valves 100, the four groups of the pipeline valves 100 being connected in sequence, in the two adjacent pipeline valves 100, the first outlet 120 of the first pipeline valve 100 being connected with the third outlet 140 of the second pipeline valve 100 through a pipeline, and after the four groups of the pipeline valves 100 are connected, six liquid inlet pipelines are formed, which are four pipelines connected with the four second outlets 130, a pipeline connected with the first outlet 120 and a pipeline connected with the third outlet 140.

[0063] For the convenience of understanding, the connection ports of the four pipelines connected with the four second outlets 130 of the four pipeline valves 100 on the first connecting pipeline 200 and the second connecting pipeline 300, the pipeline connected with the first outlet 120 of the first group of pipeline valves 100 and the pipeline connected with the third outlet 140 of the fourth group of pipeline valves 100 are marked as a, b, c, d, e and f respectively. The six connection ports are connected through a plurality of pipelines to form two communication modes.

[0064] For the first connecting pipeline 200, the refrigerant enters the first connecting pipeline 200 from b, d and e and flows out from a, c, f; the refrigerant flows into from a, c and flows out from b, d, and e, f does not flow the refrigerant.

[0065] For the second connecting pipeline 300, the refrigerant enters the second connecting pipeline 300 from b, d and flows out from a, c, and e, f does not flow the refrigerant; the refrigerant flows into from a, c, f and flows out from e, b, d.

[0066] The present application further provides a heat exchanger comprising the pipeline structure as described above.

[0067] In the heat pump system, the refrigerant has two flow directions of refrigeration and heating, and the first connecting pipeline 200 can switch the communication mode of the internal pipe according to the flow direction of the refrigerant of the system: in the refrigeration mode, the refrigerant enters the device from b, d and e and flows out from a, c, f; in the heating mode, the refrigerant flows into from a, c and flows out from b, d, and e, f does not flow the refrigerant.

[0068] The second connecting pipeline 300 can switch the connection mode of the internal pipe according to the refrigerant flow direction of the system: in the cooling mode, the refrigerant flows into the device from b and d, and flows out from a and c, and e and f do not flow the refrigerant; in the heating mode, the refrigerant flows into from a, c and f, and flows out from e, b and d.

[0069] The heat exchanger provided by the application comprises a double-row finned tube heat exchanger body 400 and the pipeline structure as described above.

[0070] Specifically, the double-row finned tube heat exchanger body 400, at least two first connecting pipelines 200, at least one second connecting pipeline 300 and a plurality of U-shaped pipes 430 are included.

[0071] The first connecting pipeline 200 comprises four groups of pipeline valves 100, and the four groups of pipeline valves 100 are connected in sequence.

[0072] The second connecting pipeline 300 comprises four groups of pipeline valves 100, and the four groups of pipeline valves 100 are connected in sequence.

[0073] At least one first connecting pipeline 200 is connected to four pipelines on the four second outlets 130, and the four pipelines are respectively connected to two rows of interfaces of the heat exchanger body 400.

[0074] At least one second connecting pipeline 300 is connected between at least two first connecting pipelines 200, and at least one second connecting pipeline 300 is connected to four pipelines on the four second outlets 130, and the four pipelines are respectively connected to two adjacent rows of interfaces of the heat exchanger body 400.

[0075] Other interfaces on the double-row finned tube heat exchanger body 400 are connected through the U-shaped pipes 430.

[0076] The heat exchanger provided by the application can reasonably set the flow path according to the quantity requirement of different branches in the heating mode and the refrigeration mode, and can automatically realize the switching of the refrigeration mode and the heating mode according to the flow direction of the refrigerant, thereby saving additional control valves and reducing the use cost; the refrigeration mode and the heating mode can be set according to the optimal flow path without mutual restriction, and the versatility is high, and the design is more flexible.

[0077] For the convenience of understanding, a, b, c and d of the first connecting pipeline 200 are connected with four interfaces on the double-row heat exchanger body 400 respectively, e is connected with the refrigerant inlet pipe, and f is connected with the refrigerant outlet pipe.

[0078] In the refrigeration mode, the refrigerant enters the pipeline valve 100 from the first outlet 120 of the first pipeline valve 100 through the e port of the first connecting pipeline 200, the valve core 150 moves to the third outlet 140 direction to close the third outlet 140, the refrigerant flows out from the second outlet 130, then flows to a, enters the double-row heat exchanger body 400 after circulating, and then flows out through d, d is connected with the second outlet 130 of the fourth pipeline valve 100, that is, enters the second outlet 130 of the fourth pipeline valve 100, the valve core 150 moves to the first outlet 120 direction to close the first outlet 120, the refrigerant flows out from the third outlet 140, then flows to f, enters the refrigerant outlet pipe, and completes the first section of the refrigerant flow path.

[0079] The refrigerant on the double-row heat exchanger body 400 enters the heat exchanger body 400 from the refrigeration inlet pipe, flows into the pipeline valve 100 through b, b is connected with the second outlet 130 of the second pipeline valve 100, the refrigerant flows into the second pipeline valve 100 from the second outlet 130, flows out from the third outlet 140, and the third outlet 140 of the second pipeline valve 100 is connected with the first outlet 120 of the third pipeline valve 100, so that the refrigerant enters the third pipeline valve 100 through the first outlet 120 of the third pipeline valve 100, then flows out from the second outlet 130 of the third pipeline valve 100, that is, flows to c, continues to flow to the double-row heat exchanger body 400 through c, and is discharged from the interface on the double-row heat exchanger body 400, to complete the second section of the refrigerant flow path.

[0080] Exemplarily, Figure 5 A perspective view of a 2-row 24-hole finned tube heat exchanger is shown, which is composed of Figure 5 As can be seen, the heat exchanger body 400 has two rows of interfaces, each row has 24 interfaces, and every two interfaces at one end are connected by a U-shaped tube 430, that is, each row has 12 U-shaped tubes 430. Figure 5 The right side of the heat exchanger body 400 is in a state that the U-shaped tubes 430 are not connected with each other.

[0081] For the convenience of description, the following is named from left to right and from top to bottom according to the hole position of the heat exchanger main body 400, such as the left uppermost hole is 1-1, and the right lowermost hole is 2-24.

[0082] As shown in the figure, the heat exchanger uses the first connecting pipeline 200 in three places and the second connecting pipeline 300 in two places. Figure 6

[0083] The first connecting pipeline 200 is installed as follows: the hole 1-6 (1-12, 1-18) is connected to the a port, 1-7 (1-13, 1-19) is connected to the b port, 2-6 (2-12, 2-18) is connected to the d port, 2-7 (2-13, 2-19) is connected to the c port, the e port is connected to the inlet pipe in the refrigeration mode, and the f port is connected to the outlet pipe in the refrigeration mode.

[0084] The second connecting pipeline 300 is installed in the same way: the hole 1-8 (1-16) is connected to the a port, 1-9 (1-17) is connected to the b port, 2-8 (2-16) is connected to the d port, 2-9 (2-17) is connected to the c port, the e port is connected to the outlet pipe in the heating mode, and the f port is connected to the inlet pipe in the heating mode. In addition, the hole 1-24 is connected to the refrigeration inlet pipe (heating outlet pipe) 410, and the hole 2-24 is connected to the heating inlet pipe (refrigeration outlet pipe) 420.

[0085] The remaining part is connected by small elbow pipes. After installation in the above-mentioned manner, the flow path state of the heat exchanger in the refrigeration and heating modes is as shown in the figure. Figures 7-9 Figure 9

[0086] In this example, the a, b, c, and d of the first group of first connecting pipelines 200 are respectively connected to the four interfaces on the double-row heat exchanger main body 400, e is connected to the refrigerant inlet pipe, and f is connected to the refrigerant outlet pipe.

[0087] In the refrigeration mode, the refrigerant enters the pipeline valve 100 from the e port, that is, from the first outlet 120 of the first pipeline valve 100, the valve core 150 moves to the third outlet 140 direction to close the third outlet 140, the refrigerant flows out from the second outlet 130, then flows to a, enters the double-row heat exchanger main body 400 after circulating, and then flows out through d, which is connected to the second outlet 130 of the fourth pipeline valve 100, that is, from the second outlet 130 of the fourth pipeline valve 100, the valve core 150 moves to the first outlet 120 direction to close the first outlet 120, the refrigerant flows out from the third outlet 140, then flows to f, enters the refrigerant outlet pipe, and completes the first section of the refrigerant flow path.

[0088] ​​​And the refrigerant from the e port of the first connecting pipe 200 of the second group enters the pipe valve 100, from the first outlet 120 of the first pipe valve 100, the valve core 150 moves to the third outlet 140 direction to close the third outlet 140, the refrigerant flows out from the second outlet 130, and then flows to a, from a into the double-row heat exchanger body 400 for circulation, and then enters the second connecting pipe 300 through b of the first group, and then flows to a; after circulating in the double-row heat exchanger body 400, it enters b of the first group of the first connecting pipe 200 and flows to c of the first group of the first connecting pipe 200, and then flows to d of the first group of the second connecting pipe 300, from d of the second connecting pipe 300 to c, and then after circulating in the double-row heat exchanger body 400, it returns to f of the second group of the first connecting pipe 200 and is discharged to the refrigerant outlet pipe, completing the second refrigerant flow path.

[0089] Similarly, the refrigerant in the third group of the first connecting pipe 200 enters from e, and then is discharged from f of the third group of the first connecting pipe 200 to the refrigerant outlet pipe, completing the third refrigerant flow path.

[0090] And the refrigerant on the double-row heat exchanger body 400 enters the heat exchanger body 400 from the refrigerant inlet pipe, flows into the pipe valve 100 through b, b is connected with the second outlet 130 of the second pipe valve 100, the refrigerant flows into the second pipe valve 100 from the second outlet 130, and then flows out from the third outlet 140 of the second pipe valve 100, and the third outlet 140 of the second pipe valve 100 is connected with the first outlet 120 of the third pipe valve 100, so that the refrigerant enters the third pipe valve 100 through the first outlet 120 of the third pipe valve 100, and then flows out from the second outlet 130 of the third pipe valve 100, that is, flows to c, continues to flow to the double-row heat exchanger body 400 through c, and is discharged from the interface on the double-row heat exchanger body 400, completing the fourth refrigerant flow path.

[0091] In the heating mode, the refrigerant enters from f of the first group of the second connecting pipe 300, flows to d, and then flows to c of the first group of the first connecting pipe 200, c of the first group of the first connecting pipe 200 flows to d, and then flows to a of the first group of the first connecting pipe 200 through the double-row heat exchanger body 400, a of the first group of the first connecting pipe 200 flows to b of the first group of the first connecting pipe 200, and then flows to a of the first group of the second connecting pipe 300 through the double-row heat exchanger body 400, and is discharged through e of the first group of the second connecting pipe 300, completing the first refrigerant flow path.

[0092] Similarly, the refrigerant enters the second group of the second connecting pipe 300 from f, flows to d, then flows to the second group of the first connecting pipe 200 from c, flows to d of the second group of the first connecting pipe 200, then flows to the first group of the second connecting pipe 300 from c via the double-row heat exchanger body 400, flows to b of the first group of the second connecting pipe 300, then flows to a of the second group of the first connecting pipe 200 via the double-row heat exchanger body 400, flows to a of the second group of the second connecting pipe 300 from b, and completes the second refrigerant flow path.

[0093] Further, the refrigerant on the double-row heat exchanger body 400 enters the heat exchanger body 400 from the heating inlet pipe, flows to c of the third group of the first connecting pipe 200, flows to d of the third group of the first connecting pipe 200 from c, flows to c of the second group of the second connecting pipe 300 from d, then flows to b of the second group of the second connecting pipe 300 from c, flows to a of the third group of the first connecting pipe 200, flows to b from a, and is discharged from the heating outlet pipe on the double-row heat exchanger body 400, completing the third refrigerant flow path.

[0094] It can be seen that the heat exchanger has 4 sub-paths in the refrigeration mode and automatically changes to 3 sub-paths in the heating mode. Figures 7-9 It can be seen that the refrigerant of each flow path enters the heat exchanger body 400, flows upward through the U-shaped pipe 430 and the elbow pipe, turns back to the second row at the top of the flow path, and then flows downward to the outlet of the flow path. The first connecting pipe 200 is installed at each inlet and outlet position of the refrigeration flow path, and the second connecting pipe 300 is installed at each inlet and outlet position of the heating flow path.

[0095] Because the interfaces 1-24 and 2-24 at the bottom are shared by refrigeration and heating, the number of the first connecting pipe 200 used = the number of refrigeration flow paths required - 1, and the number of the second connecting pipe 300 used = the number of heating flow paths required - 1. Designers can design the flow paths by using the first connecting pipe 200 and the second connecting pipe 300. When refrigeration and heating use different sub-paths, there will be no mutual restriction problem, which provides more possibilities for designers to design flow paths and maximizes the performance of the heat exchanger, so that the energy efficiency of the air conditioning system is effectively improved.

[0096] In the description of the specification, reference to terms such as "the example", "an embodiment", or "some embodiments" or the like is meant to refer to specific features, structures, materials, or characteristics that are included in at least one embodiment of the present application. Descriptions of the above terms are illustrative and are not necessarily meant to refer to the same embodiment or example. Also, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0097] Of course, the present application is not limited to the embodiments described above, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A pipeline structure, characterized in that, It includes a first connecting pipeline, which includes four sets of pipeline valves; The pipeline valve has a pipeline chamber and a first outlet, a second outlet, and a third outlet communicating with the pipeline chamber; The pipeline chamber is provided with a valve core, a sliding channel and a connecting channel. The connecting channel is used to connect the first outlet and the second outlet, and the sliding channel is used to connect the first outlet and the third outlet. The valve core is adapted to the sliding channel, and the valve core reciprocates within the sliding channel to close the first outlet or to close the third outlet; When the valve core closes the first outlet, the sliding channel opens the second outlet and the third outlet; When the valve core closes the third outlet, the connecting channel and the sliding channel connect the first outlet and the second outlet; The four sets of pipeline valves are connected in sequence. In two adjacent pipeline valves, the third outlet of the first pipeline valve is connected to the first outlet of the second pipeline valve through a pipeline.

2. The pipeline structure according to claim 1, characterized in that, The pipeline structure also includes a second connecting pipeline, which includes four sets of pipeline valves connected in sequence. In two adjacent pipeline valves, the first outlet of the first pipeline valve is connected to the third outlet of the second pipeline valve through a pipeline.

3. The pipeline structure according to claim 2, characterized in that, The first outlet and the second outlet on the pipeline valve are on the same axis, and the third outlet is located between the first outlet and the second outlet and is perpendicular to the first outlet.

4. The pipeline structure according to claim 3, characterized in that, The connecting channel surrounds the sliding channel and is connected to the sliding channel.

5. The pipeline structure according to claim 2, characterized in that, The valve core has a spherical structure, and the sliding channel is a circular tubular channel that cooperates with the valve core.

6. A heat exchanger, characterized in that, Includes the piping structure as described in any one of claims 2-5.

7. The heat exchanger according to claim 6, characterized in that, It includes a double-row finned tube heat exchanger body, at least two first connecting pipes, at least one second connecting pipe, and several U-shaped tubes, wherein: The first connecting pipeline includes four sets of pipeline valves, which are connected in sequence. In two adjacent pipeline valves, the third outlet of the first pipeline valve is connected to the first outlet of the second pipeline valve through a pipeline. The second connecting pipeline includes four sets of pipeline valves, which are connected in sequence. In two adjacent pipeline valves, the first outlet of the first pipeline valve is connected to the third outlet of the second pipeline valve through a pipeline. At least one of the first connecting pipes is connected to four of the four second outlets, and the four pipes are respectively connected to two rows of interfaces on the heat exchanger body. The pipe connected to the first outlet is connected to the refrigerant inlet pipe, and the pipe connected to the third outlet is connected to the refrigerant outlet pipe. At least one second connecting pipe is connected between at least two first connecting pipes, and at least one second connecting pipe is connected to four pipes on four second outlets, which are respectively connected to two adjacent rows of interfaces on the heat exchanger body. The pipe connected to the first outlet is connected to the refrigerant outlet pipe, and the pipe connected to the third outlet is connected to the refrigerant inlet pipe. Other interfaces on the main body of the double-row finned tube heat exchanger are connected via U-shaped tubes.

8. An air conditioner, characterized in that, Includes the heat exchanger as described in claim 6 or 7.

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