One-way flow diversion device and variable flow diversion heat exchanger

Abstract

The present application relates to the technical field of air conditioners, and discloses a unidirectional flow splitting device including a housing, a guiding component, a blocking element and a positioning element. The housing includes a first refrigerant port provided on a first end face, a second refrigerant port and a third refrigerant port provided on a second end face, wherein the housing has a hollow inner cavity. The first end of the guiding component is fixed to the first end face. The blocking element is slidably connected to the guiding component, and there is a gap between the blocking element and the inner cavity wall surface of the housing. The positioning element is provided at the second end of the guiding component for stopping the blocking element. Wherein, when the blocking element is in the first position, the first refrigerant port is blocked, so that the refrigerant flows in from the second refrigerant port and flows out from the third refrigerant port. When the blocking element is in the second position, the first refrigerant port is conducted, so that the refrigerant flows in from the first refrigerant port and flows out from the second refrigerant port and the third refrigerant port. The present application also discloses a variable flow splitting heat exchanger.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and particularly relates to a one-way flow dividing device and a variable flow dividing heat exchanger. Background Art

[0002] An air conditioner is a device used by people to adjust the temperature and humidity in a certain environment. Existing air conditioners generally mainly include an indoor heat exchanger, an outdoor heat exchanger, and a refrigerant circulation system, and a refrigerant is filled therein for heat exchange to achieve the effect of adjusting the temperature. Therefore, the heat exchange efficiency of the refrigerant is also one of the main factors affecting the temperature adjustment of the air conditioner.

[0003] In order to improve the heat exchange efficiency of the air conditioner, existing heat exchangers will set valve body components such as a flow dividing device and a check valve, so that the refrigerant flow paths during refrigeration and heating are different.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] Setting valve body components such as a flow dividing device and a check valve in the heat exchanger often increases the solder joints of the valve body components on the heat exchanger, and in order to ensure the welding safety distance, the distance between the solder joints of two adjacent valve body components is usually greater than 30 cm, increasing the material cost and space cost of the heat exchanger. Summary of the Invention

[0006] To have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. The summary is not a general review, nor is it intended to identify key / important constituent elements or delineate the protection scope of these embodiments, but rather serves as a preface to the subsequent detailed description.

[0007] The embodiments of the present disclosure provide a one-way flow dividing device, which blocks or conducts the refrigerant ports to make the refrigerant flow unidirectionally or divide the refrigerant. Using the above one-way flow dividing device can reduce the valve body components in the heat exchanger, thereby reducing the solder joints in the heat exchanger, and further reducing the material cost and space cost of the heat exchanger.

[0008] In some embodiments, a one-way flow dividing device includes a housing, a guiding assembly, a blocking element, and a positioning element. The housing includes a first refrigerant port provided on a first end face, a second refrigerant port and a third refrigerant port provided on a second end face, wherein the housing has a hollow inner cavity. The first end of the guiding assembly is fixed to the first end face. The blocking element is slidably connected to the guiding assembly, and there is a gap between the blocking element and the inner cavity wall surface of the housing. The positioning element is provided at the second end of the guiding assembly for stopping the blocking element.

[0009] Wherein, when the blocking element is in the first position, the first refrigerant port is blocked, so that the refrigerant flows in from the second refrigerant port and flows out from the third refrigerant port. When the blocking element is in the second position, the first refrigerant port is conducted, so that the refrigerant flows in from the first refrigerant port and flows out from the second refrigerant port and the third refrigerant port.

[0010] In some embodiments, the guiding assembly includes a first guide rail group and a second guide rail group. The first guide rail group is arranged on one side of the first refrigerant port. The second guide rail group is arranged on the other side of the first refrigerant port.

[0011] In some embodiments, the inner cavity of the housing is cylindrical and the blocking element is circular.

[0012] In some embodiments, the first refrigerant port is circular, the area of the first refrigerant port is a first area S1, and the area of the blocking element is a second area S2. Wherein, the first area S1 is smaller than the second area S2.

[0013] In some embodiments, the cross-sectional area of the inner cavity of the housing is a third area S3. Wherein, the first area S1 is less than or equal to 4 / 5 of the second area S2, and the second area S2 is less than or equal to 4 / 5 of the third area S3.

[0014] In some embodiments, the thickness of the blocking element is a first thickness D1, the height of the guiding assembly is a first height H1, and the height of the inner cavity of the housing is a second height H2. Wherein, the first thickness D1 is smaller than the first height H1, and the first height H1 is smaller than the second height H2.

[0015] In some embodiments, the first thickness D1 is less than or equal to 1 / 2 times the first height H1. The first height H1 is less than or equal to 1 / 2 times the second height H2.

[0016] In some embodiments, the blocking element is configured as a solid structure or a hollow structure.

[0017] In some embodiments, a variable flow-splitting heat exchanger includes the above-mentioned one-way flow-splitting device.

[0018] In some embodiments, a variable flow-dividing heat exchanger further includes a first heat exchange path, a second heat exchange path, a third heat exchange path, a first confluence pipeline, a second confluence pipeline, and a first valve body. The first end of the first heat exchange path is connected to the first flow-dividing element, and the second end is connected to the second refrigerant port of the one-way flow-dividing device. The first end of the second heat exchange path is connected to the third refrigerant port of the one-way flow-dividing device, and the second end is connected to the second flow-dividing element. The first end of the third heat exchange path is connected to the second flow-dividing element, and the second end is connected to the third flow-dividing element. The first end of the first confluence pipeline is connected to the first flow-dividing element, and the second end is connected to the second flow-dividing element. The first end of the second confluence pipeline is connected to the first refrigerant port of the one-way flow-dividing device, and the second end is connected to the third flow-dividing element. The first valve body is disposed on the first confluence pipeline.

[0019] Some technical solutions provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] When the blocking element is in the first position, it can block the refrigerant from flowing out of the first refrigerant port to achieve the one-way flow of the refrigerant in the corresponding flow path. It can be seen that when the blocking element in the above one-way flow-dividing device slides to the first position, the effect of a one-way valve can be achieved. When the blocking element is in the second position, the refrigerant flows in from the first refrigerant port and flows out from the second refrigerant port and the third refrigerant port to divide the refrigerant flowing in from the first refrigerant port. It can be seen that when the blocking element in the above one-way flow-dividing device slides to the second position, the effect of a flow-dividing device can be achieved. In this way, the above one-way flow-dividing device slides the blocking element to the first position or the second position to respectively achieve the function of one-way flow of the refrigerant or flow division of the refrigerant, thereby reducing the number of valve bodies that need to be welded in the heat exchanger to reduce the material cost and space cost.

[0021] The above general description and the following description are only exemplary and explanatory, and are not used to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation, and among them:

[0023] Figure 1 is a schematic structural diagram of a heat exchanger in a related art provided by an embodiment of the present disclosure;

[0024] Figure 2 is a schematic structural diagram of a one-way flow-dividing device provided by an embodiment of the present disclosure;

[0025] Figure 3 is a schematic structural diagram of a guiding component provided by an embodiment of the present disclosure;

[0026] Figure 4 It is a refrigerant flow diagram with a blocking element in the first position provided by an embodiment of the present disclosure;

[0027] Figure 5 It is a refrigerant flow diagram with a blocking element in the second position provided by an embodiment of the present disclosure;

[0028] Figure 6 It is a dimensional drawing of a partial structure of a one-way flow splitting device provided by an embodiment of the present disclosure;

[0029] Figure 7 It is a schematic structural diagram of a blocking element provided by an embodiment of the present disclosure;

[0030] Figure 8 It is a schematic structural diagram of another blocking element provided by an embodiment of the present disclosure;

[0031] Figure 9 It is a refrigerant flow diagram of a variable flow splitting heat exchanger provided by an embodiment of the present disclosure;

[0032] Figure 10 It is a refrigerant flow diagram of another variable flow splitting heat exchanger provided by an embodiment of the present disclosure.

[0033] Reference numerals:

[0034] 1: housing; 101: first refrigerant port; 102: second refrigerant port; 103: third refrigerant port; 2: guiding assembly; 201: first guide rail group; 202: second guide rail group; 203: stop rod; 3: positioning element; 4: blocking element; 401: guiding groove; 402: guiding hole; 501: first heat exchange passage; 502: second heat exchange passage; 503: third heat exchange passage; 601: first confluence pipeline; 602: second confluence pipeline; 7: one-way flow splitting device; 801: first flow splitting element; 802: second flow splitting element; 803: third flow splitting element; 804: fourth flow splitting element; 901: first valve body; 902: second valve body. Detailed implementation manners

[0035] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The attached drawings are only for reference and explanation purposes and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, multiple details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be shown in a simplified manner to simplify the drawings.

[0036] In the description and claims of the embodiments of the present disclosure and the above-mentioned drawings, terms such as "first" and "second" are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to implement the embodiments of the present disclosure described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0037] In the embodiments of the present disclosure, the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "middle", "outer", "front", and "back" is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and their implementations, and are not used to limit that the indicated devices, elements, or components must have a specific orientation or be constructed and operated in a specific orientation. Moreover, in addition to being able to represent an orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0038] In addition, the terms "arranged", "connected", and "fixed" should be understood in a broad sense. For example, "connected" 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 directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0039] Unless otherwise specified, the term "plurality" means two or more.

[0040] In the embodiments of the present disclosure, the character " / " indicates that the front and rear objects have an "or" relationship. For example, A / B means: A or B.

[0041] The term "and / or" is an associative relationship describing an object, indicating that there can be three relationships. For example, A and / or B means: A or B, or, A and B these three relationships.

[0042] It should be noted that, without conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0043] The air conditioner includes an indoor unit and an outdoor unit. The indoor unit is provided with an indoor heat exchanger, an indoor fan, etc., which can be used to achieve functions such as cooperating with the refrigerant to exchange heat with the indoor environment; the outdoor unit is provided with an outdoor heat exchanger, an outdoor fan, a compressor, etc., which can be used to achieve functions such as cooperating with the refrigerant to exchange heat with the outdoor environment.

[0044] As Figure 1 shown in the heat exchanger, a fourth flow splitting element 804 and a second valve body 902 are further provided. One end of the first heat exchange passage 501 is connected to the first flow splitting element 801, and the other end is connected to the fourth flow splitting element 804. One end of the second confluence pipeline 602 is connected to the fourth flow splitting element 804, and the other end is connected to the third flow splitting element 803. The second valve body 902 is arranged on the second confluence pipeline 602. Wherein, the second valve body is configured as a one-way valve, and the conduction direction is defined as from the third flow splitting element 803 to the fourth flow splitting element 804.

[0045] As Figure 1 shown in the heat exchanger when it is used as an outdoor heat exchanger, in the state where the air conditioner operates in the cooling mode, the first valve body 901 and the second valve body 902 are in the closed state, the first heat exchange passage 501, the second heat exchange passage 502 and the third heat exchange passage 503 are in series, and the refrigerant flows through the first heat exchange passage 501, the second heat exchange passage 502 and the third heat exchange passage 503 in sequence; in the state where the air conditioner operates in the heating mode, the first valve body 901 and the second valve body 902 are in the conducting state, the first heat exchange passage 501, the second heat exchange passage 502 and the third heat exchange passage 503 are in parallel, so that the refrigerant flows through the first heat exchange passage 501, the second heat exchange passage 502 and the third heat exchange passage 503 respectively. It can be seen that the heat exchanger can not only extend the length of the flow path of the high-temperature refrigerant in the heat exchanger under the cooling condition, so that the refrigerant can fully exchange heat to increase the subcooling degree, but also avoid the pressure loss problem caused by the too long flow path of the refrigerant under the heating condition, so as to ensure the requirements of the heat exchanger under different working conditions at the same time.

[0046] However, welding the second valve body 902 to the second confluence pipeline 602 to realize different refrigerant flow paths during refrigeration and heating will increase the welding points of the second confluence pipeline 602. In order to ensure the welding safety distance, the welding point distances between the fourth flow splitting element 804, the second valve body 902 and the third flow splitting element 803 usually need to be greater than 30 cm, which increases the material cost and space cost of the heat exchanger.

[0047] The embodiment of the present disclosure provides a one-way flow splitting device 7.

[0048] As Figures 2 to 6As shown, in some embodiments, a one-way flow diversion device 7 includes a housing 1, a guiding assembly 2, a blocking element 4, and a positioning element 3. The housing 1 includes a first refrigerant port 101 provided on the first end face, a second refrigerant port 102 and a third refrigerant port 103 provided on the second end face, wherein the housing 1 has a hollow inner cavity. The first end of the guiding assembly 2 is fixed to the first end face. The blocking element 4 is slidably connected to the guiding assembly 2, and there is a gap between the blocking element 4 and the inner cavity wall surface of the housing 1. The positioning element 3 is provided at the second end of the guiding assembly 2 for stopping the blocking element 4.

[0049] Wherein, when the blocking element 4 is in the first position, it blocks the first refrigerant port 101, allowing the refrigerant to flow in from the second refrigerant port 102 and flow out from the third refrigerant port 103, as Figure 4 shown. When the blocking element 4 is in the second position, it conducts the first refrigerant port 101, allowing the refrigerant to flow in from the first refrigerant port 101 and flow out from the second refrigerant port 102 and the third refrigerant port 103, as Figure 5 shown.

[0050] It can be understood that the blocking element 4 can be pushed to slide up or down along the guiding assembly 2 by the pressure generated by the refrigerant itself during flow.

[0051] Specifically, when the refrigerant flows in from the second refrigerant port 102, the refrigerant pushes the blocking element 4 to slide down. The pressure exerted by the refrigerant causes the blocking element 4 to slide along the guiding assembly 2 to the first position to block the first refrigerant port 101, so that the refrigerant cannot flow out through the first refrigerant port 101 and can only flow out through the third refrigerant port 103, as Figure 4 shown. When the refrigerant flows in from the first refrigerant port 101, the refrigerant pushes the blocking element 4 to slide up. The pressure exerted by the refrigerant causes the blocking element 4 to slide along the guiding assembly 2 to the second position to conduct the first refrigerant port 101. After flowing in from the first refrigerant port 101, the refrigerant flows through the gap between the blocking element 4 and the inner cavity wall surface of the housing 1 to the second refrigerant port 102 and the third refrigerant port 103, and then flows out from the second refrigerant port 102 and the third refrigerant port 103, as Figure 5 shown. When the refrigerant pushes the blocking element 4 to the second position, the positioning element 3 can stop the blocking element 4 to prevent the blocking element 4 from detaching from the guiding assembly 2.

[0052] It can be seen that when the blocking element 4 is in the first position, it blocks the first refrigerant port 101, preventing the refrigerant from flowing out through the first refrigerant port 101. When the blocking element 4 is in the second position, it conducts the first refrigerant port 101, allowing the refrigerant to flow in through the first refrigerant port 101, as Figure 4 shown. In this way, the blocking element 4 enables the refrigerant in the corresponding flow path of the first refrigerant port 101 to only flow in from the first refrigerant port 101 and flow out from the second refrigerant port 102 and the third refrigerant port 103, so as to achieve the one-way flow of the refrigerant.

[0053] When the blocking element 4 is in the second position, the refrigerant can flow in from the first refrigerant port 101 and then flow out from the second refrigerant port 102 and the third refrigerant port 103. After the refrigerant in the corresponding flow path of the first refrigerant port 101 flows into the one-way flow splitting device 7, it simultaneously flows to the flow paths corresponding to the second refrigerant port 102 and the third refrigerant port 103 to achieve the splitting of the refrigerant. Therefore, the one-way flow splitting device 7 can slide the blocking element 4 to the first position or the second position to respectively achieve the effects of making the refrigerant flow unidirectionally and splitting the refrigerant.

[0054] As Figure 3 shown, in some embodiments, the guiding assembly 2 includes a first guide rail group 201 and a second guide rail group 202. The first guide rail group 201 is arranged on one side of the first refrigerant port 101. The second guide rail group 202 is arranged on the other side of the first refrigerant port 101.

[0055] Specifically, the first guide rail group 201 and the second guide rail group 202 are arranged in parallel with each other. The first guide rail group 201 is vertically arranged on the first end face of the inner cavity of the housing 1 and is arranged on one side of the first refrigerant port 101. Similarly, the second guide rail group 202 is vertically arranged on the first end face of the inner cavity of the housing 1 and is arranged on the other side of the first refrigerant port 101.

[0056] In an embodiment, the first guide rail group 201 and the second guide rail group 202 have the same structure. For example, the widths and heights of the first guide rail group 201 and the second guide rail group 202 are the same, etc., to improve the stability of the connection between the blocking element 4 and the guiding assembly 2 and the stability of the sliding of the blocking element 4 along the guiding assembly 2.

[0057] As Figure 3 shown, in some embodiments, the first guide rail group 201 is further provided with a stop rod 203, and the stop rod 203 is perpendicularly and fixedly connected to the second end of the first guide rail group 201. Similarly, the second guide rail group 202 is further provided with a stop rod 203, and the stop rod 203 is perpendicularly and fixedly connected to the second end of the second guide rail group 202.

[0058] Specifically, the second ends of both the first guide rail group 201 and the second guide rail group 202 are provided with a positioning element 3 and a stop rod 203 to stop the blocking element 4, thereby improving the stability when the blocking element 4 is in the second position.

[0059] In some embodiments, the inner cavity of the housing 1 is cylindrical and the blocking element 4 is circular.

[0060] Specifically, there is a gap between the blocking element 4 and the inner wall surface of the housing 1, and the blocking element 4 and the inner cavity of the housing 1 are concentrically arranged, so that when the refrigerant flowing in from the first refrigerant port 101 flows through the gap to the second refrigerant port 102 and the third refrigerant port 103, the flow rate and velocity are more uniform, as Figure 2 shown.

[0061] In some embodiments, the first refrigerant port 101 is circular, the area of the first refrigerant port 101 is the first area S1, and the area of the blocking element 4 is the second area S2. Among them, the first area S1 is smaller than the second area S2.

[0062] Specifically, the first area S1 is smaller than the second area S2, so that when the blocking element 4 is in the first position, the first refrigerant port 101 can be completely blocked to prevent the refrigerant from flowing out of the first refrigerant port 101.

[0063] In some embodiments, the cross-sectional area of the inner cavity of the housing 1 is the third area S3. Among them, the first area S1 is less than or equal to 4 / 5 of the second area S2, and the second area S2 is less than or equal to 4 / 5 of the third area S3.

[0064] It can be understood that if the gap between the blocking element 4 and the inner wall surface of the housing 1 is too small, it may affect the flow rate and flow of the refrigerant when flowing through the gap.

[0065] Specifically, the first area S1 is less than or equal to 4 / 5 of the second area S2 to ensure that the first refrigerant port 101 can be completely blocked when the blocking element 4 is in the first position. For example, the first area S1 is 3 / 4, 2 / 3 or 1 / 2 of the second area S2. The second area S2 is less than or equal to 4 / 5 of the third area S3, so that when the blocking element 4 is in the second position and the refrigerant flowing in from the first refrigerant port 101 flows through the gap, the flow rate and flow of the refrigerant are more uniform. For example, the second area S2 is 3 / 4, 2 / 3 or 1 / 2 of the third area S3.

[0066] As Figure 7 shown, in some embodiments, the blocking element 4 is provided with a guide groove 401. The blocking element 4 is slidably connected to the guide assembly 2 through the guide groove 401.

[0067] Specifically, the blocking element 4 is slidably connected to the guide assembly 2 through the guide groove 401, so that when the refrigerant pushes the blocking element 4 to slide along the guide assembly 2, it is more stable.

[0068] As Figure 8 shown, in some embodiments, the blocking element 4 is provided with a guide hole 402. The blocking element 4 is slidably connected to the guide assembly 2 through the guide hole 402.

[0069] Specifically, the blocking element 4 is slidably connected to the guiding assembly 2 through the guiding hole 402, so that when the refrigerant pushes the blocking element 4 to slide along the guiding assembly 2, it is more stable.

[0070] In some embodiments, the thickness of the blocking element 4 is the first thickness D1, the height of the guiding assembly 2 is the first height H1, and the height of the inner cavity of the housing 1 is the second height H2. Among them, the first thickness D1 is less than the first height H1, and the first height H1 is less than the second height H2, as Figure 6 shown.

[0071] In some embodiments, the first thickness D1 is less than or equal to 1 / 2 times the first height H1. The first height H1 is less than or equal to 1 / 2 times the second height H2.

[0072] Specifically, when the blocking element 4 is in the second position, such as the position Figure 5 shown, there is enough flow gap between the blocking element 4 and the first refrigerant port 101 to allow the refrigerant to flow smoothly into the first refrigerant port 101. At the same time, there is also enough flow gap between the blocking element 4 and the second refrigerant port 102 and the third refrigerant port 103 to allow the refrigerant to flow smoothly out of the second refrigerant port 102 and the third refrigerant port 103. For example, the first thickness D1 can be 1 / 2, 1 / 3, 1 / 4 or 1 / 5 of the first height H1. Similarly, the first height H1 can be 1 / 2, 1 / 3, 1 / 4 or 1 / 5 of the second height H2.

[0073] In some embodiments, the blocking element 4 is configured as a solid structure or a hollow structure.

[0074] It can be understood that in the case of a small refrigerant flow rate, configuring the blocking element 4 as a hollow structure can make the refrigerant push the blocking element 4 to slide along the guiding assembly 2 more stably, avoiding the situation where the refrigerant cannot push the blocking element 4 to slide.

[0075] Optionally, the second end face of the housing 1 is located above the first end face.

[0076] Specifically, the second end face of the housing 1 is located above the first end face, so that the blocking element 4 is in the first position when not squeezed by the refrigerant, that is, the initial position of the blocking element 4 is the first position. In this way, when the refrigerant flows in from the second refrigerant port 102, it will not flow out of the first refrigerant port 101 through the gap because the blocking element 4 does not slide to the first position in time.

[0077] In some embodiments, the area of the second refrigerant port 102 is equal to the area of the third refrigerant port 103.

[0078] Specifically, the area of the second refrigerant port 102 is equal to the area of the third refrigerant port 103. When the refrigerant flows in from the second refrigerant port 102 and flows out from the third refrigerant port 103, the flow rate and flow velocity of the refrigerant are more uniform.

[0079] In some embodiments, the area of the first refrigerant port 101 is larger than the areas of the second refrigerant port 102 and the third refrigerant port 103.

[0080] The embodiments of the present disclosure also provide a variable flow-dividing heat exchanger.

[0081] In some embodiments, a variable flow-dividing heat exchanger includes the above-mentioned one-way flow-dividing device 7.

[0082] Specifically, the above-mentioned one-way flow-dividing device 7 has the function of making the refrigerant flow unidirectionally in the corresponding flow path. Therefore, in the above variable flow-dividing heat exchanger, the pipeline connected to the first refrigerant port 101 of the one-way flow-dividing device 7 does not need to install a flow-dividing element and a one-way valve at the same time, and the effect of unidirectional flow division of the refrigerant can be achieved. In this way, the above-mentioned one-way flow-dividing device 7 can simultaneously realize the functions of a flow-dividing element and a one-way valve, reduce the number of valve bodies on the second converging pipeline 602, and further reduce the welding points of the valve bodies on the second converging pipeline 602, so as to reduce the material cost and space cost.

[0083] In some embodiments, a variable flow-dividing heat exchanger further includes a first heat exchange path 501, a second heat exchange path 502, a third heat exchange path 503, a first converging pipeline 601, a second converging pipeline 602, and a first valve body 901. The first end of the first heat exchange path 501 is connected to the first flow-dividing element 801, and the second end is connected to the second refrigerant port 102 of the one-way flow-dividing device 7. The first end of the second heat exchange path 502 is connected to the third refrigerant port 103 of the one-way flow-dividing device 7, and the second end is connected to the second flow-dividing element 802. The first end of the third heat exchange path 503 is connected to the second flow-dividing element 802, and the second end is connected to the third flow-dividing element 803. The first end of the first converging pipeline 601 is connected to the first flow-dividing element 801, and the second end is connected to the second flow-dividing element 802. The first end of the second converging pipeline 602 is connected to the first refrigerant port 101 of the one-way flow-dividing device 7, and the second end is connected to the third flow-dividing element 803. The first valve body 901 is disposed on the first converging pipeline 601.

[0084] Wherein, the first valve body 901 is configured as a valve body element that can make the refrigerant flow unidirectionally in the corresponding flow path, and the conduction direction is defined as from the second flow-dividing element 802 to the first flow-dividing element 801. For example, the first valve body 901 can be a one-way valve or a solenoid valve, etc.

[0085] It can be understood that since the conduction direction of the first valve body 901 is defined as from the second flow dividing element 802 to the first flow dividing element 801, the refrigerant in the first flow dividing element 801 cannot flow to the second flow dividing element 802 through the first confluence pipeline 601.

[0086] Specifically, as Figure 9 shown, when the refrigerant flow direction in the variable flow dividing heat exchanger is from the first flow dividing element 801 to the third flow dividing element 803, the refrigerant in the first flow dividing element 801 flows to the one-way flow dividing device 7 through the first heat exchange path 501. The refrigerant in the one-way flow dividing device 7 flows to the second flow dividing element 802 through the second heat exchange path 502, and then flows to the third flow dividing element 803 through the third heat exchange path 503.

[0087] As Figure 10 shown, when the refrigerant flow direction in the variable flow dividing heat exchanger is from the third flow dividing element 803 to the first flow dividing element 801, after the refrigerant in the third flow dividing element 803 is divided, it flows to the one-way flow dividing device 7 and the second flow dividing element 802 through the second confluence pipeline 602 and the third heat exchange path 503 respectively. After the refrigerant in the one-way flow dividing device 7 is divided, it flows to the first flow dividing element 801 and the second flow dividing element 802 through the first heat exchange path 501 and the second heat exchange path 502 respectively. The refrigerant in the second flow dividing element 802 flows to the first flow dividing element 801 through the first confluence pipeline 601.

[0088] Furthermore, when the above variable flow dividing heat exchanger is used as an outdoor heat exchanger under the refrigeration condition, the refrigerant flow direction is from the first flow dividing element 801 to the third flow dividing element 803. At this time, the first heat exchange path 501, the second heat exchange path 502, and the third heat exchange path 503 are in a series relationship.

[0089] It can be understood that by extending the path length and time for the high-temperature refrigerant to exchange heat with the outdoor environment, the high-temperature refrigerant can reach a lower temperature after flowing through the outdoor heat exchanger, thereby improving the refrigeration performance.

[0090] Furthermore, when the above variable flow dividing heat exchanger is used as an outdoor heat exchanger under the heating condition, the refrigerant flow direction is from the third flow dividing element 803 to the first flow dividing element 801. At this time, the first heat exchange path 501, the second heat exchange path 502, and the third heat exchange path 503 are in a parallel relationship.

[0091] It can be understood that under the heating condition, shortening the refrigerant flow path can avoid the pressure loss problem caused by the too long refrigerant flow path.

[0092] In this way, the air conditioner adopting the above variable flow dividing heat exchanger can achieve that when in different working conditions, the path length of the refrigerant flowing through is different, so as to ensure the performance requirements of the air conditioner in different working modes.

[0093] In some embodiments, the first heat exchange passage 501 is located above the second heat exchange passage 502, and the second heat exchange passage 502 is located above the third heat exchange passage 503.

[0094] It can be understood that the first heat exchange passage 501 being located above the second heat exchange passage 502 is conducive to the refrigerant flowing smoothly from the first heat exchange passage 501 to the second heat exchange passage 502. Similarly, the second heat exchange passage 502 being located above the third heat exchange passage 503 is conducive to the refrigerant flowing smoothly from the second heat exchange passage 502 to the third heat exchange passage 503.

[0095] In some embodiments, the first heat exchange passage 501, the second heat exchange passage 502, and the third heat exchange passage 503 include the same number of heat exchange tubes.

[0096] Specifically, the first heat exchange passage 501 includes at least one heat exchange tube, and the second heat exchange passage 502 and the third heat exchange passage 503 include the same number of heat exchange tubes as the first heat exchange passage 501, so that the refrigerant in the first heat exchange passage 501, the second heat exchange passage 502, and the third heat exchange passage 503 is more uniform.

[0097] In an embodiment, the heat exchange tubes included in the first heat exchange passage 501, the second heat exchange passage 502, and the third heat exchange passage 503 adopt the same structural design. For example, the diameters of the heat exchange tubes included in the first heat exchange passage 501, the second heat exchange passage 502, and the third heat exchange passage 503 are the same, the wall thicknesses are the same, the curvatures and lengths at the elbow joints are the same, etc., so that the refrigerant flows more uniformly in the variable flow splitting heat exchanger, avoiding the situation where the refrigerant pressure and flow rate are unstable due to changes in the heat exchange tube structure.

[0098] The above description and the drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural and other changes. The embodiments only represent possible variations. Unless explicitly required, the individual components and functions are optional, and the order of operations can vary. Some parts and features of some embodiments can be included in or replace parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A one-way shunt device, characterized in that, Comprising: A housing including a first refrigerant port provided on a first end face, a second refrigerant port and a third refrigerant port provided on a second end face, wherein the housing has a hollow inner cavity; A guiding assembly, with its first end fixed to the first end face; A blocking element slidably connected to the guiding assembly, and there is a gap between the blocking element and the inner cavity wall surface of the housing; and A positioning element provided at the second end of the guiding assembly for stopping the blocking element, wherein when the blocking element is in a first position, it blocks the first refrigerant port, allowing the refrigerant to flow in from the second refrigerant port and flow out from the third refrigerant port; when the blocking element is in a second position, it conducts the first refrigerant port, allowing the refrigerant to flow in from the first refrigerant port and flow out from the second refrigerant port and the third refrigerant port.

2. The unidirectional flow splitting device according to claim 1, characterized in that The guiding assembly includes: A first guide rail group provided on one side of the first refrigerant port; and A second guide rail group provided on the other side of the first refrigerant port.

3. The one-way flow splitting device according to claim 1, characterized in that the inner cavity of the housing is cylindrical; and the blocking element is circular.

4. The one-way flow splitting device according to claim 3, characterized in that the first refrigerant port is circular, and the area of the first refrigerant port is a first area S1; and the area of the blocking element is a second area S2, wherein the first area S1 is smaller than the second area S2.

5. The one-way flow splitting device according to claim 4, characterized in that the cross-sectional area of the inner cavity of the housing is a third area S3, wherein the first area S1 is less than or equal to 4 / 5 of the second area S2, and the second area S2 is less than or equal to 4 / 5 of the third area S3.

6. The one-way flow splitting device according to claim 1, characterized in that the thickness of the blocking element is a first thickness D1; the height of the guiding assembly is a first height H1; and the height of the inner cavity of the housing is a second height H2, wherein the first thickness D1 is smaller than the first height H1, and the first height H1 is smaller than the second height H2.

7. The one-way flow splitting device according to claim 6, characterized in that the first thickness D1 is less than or equal to 1 / 2 times the first height H1; and / or the first height H1 is less than or equal to 1 / 2 times the second height H2.

8. The one-way flow splitting device according to claim 1, characterized in that the blocking element is configured as a solid structure or a hollow structure.

9. A variable flow-dividing heat exchanger, characterized in that, Comprising: The one-way flow splitting device according to any one of claims 1 to 8.

10. The variable flow split heat exchanger according to claim 9, characterized in that, Further comprising: A first heat exchange passage, with its first end connected to a first flow splitting element and its second end connected to the second refrigerant port of the one-way flow splitting device; A second heat exchange passage, with its first end connected to the third refrigerant port of the one-way flow splitting device and its second end connected to a second flow splitting element; A third heat exchange passage, with its first end connected to the second flow splitting element and its second end connected to a third flow splitting element; A first confluence pipeline, with its first end connected to the first flow splitting element and its second end connected to the second flow splitting element; The second confluence pipeline, with the first end connected to the first refrigerant port of the one-way shunt device and the second end connected to the third shunt element; and, The first valve body is disposed on the first confluence pipeline.

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