Flow divider with one-way flow dividing function, heat exchanger and air conditioner

Abstract

The utility model provides a flow divider with a one-way flow dividing function, a heat exchanger and an air conditioner, relates to the technical field of air conditioners, and solves the technical problems that a heat exchanger is complex in branching structure, large in number of parts and high in cost. The flow divider with the one-way flow dividing function is a fork-shaped flow divider and comprises a first end and a second end which are arranged in sequence; a first runner and a second runner which are arranged side by side are arranged in the first end; the second end is internally provided with a total flow channel communicated with the first flow channel and the second flow channel; a one-way valve element is arranged in the first flow channel or the second flow channel. The one-way valve integrates the functions of the one-way valve and the fork-shaped pipe, can achieve selective flow direction branching of a flow path, and has the advantages of being simple in structure and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to a flow divider with a one-way flow dividing function, a heat exchanger and an air conditioner. Background Art

[0002] Heat exchangers in air conditioning products are often designed with multiple branch paths to improve heat exchange efficiency. The refrigerant in the air conditioning system switches between evaporation and condensation to achieve heat transfer, such as Fig. 9 As shown, the process requirements of the evaporation flow path and the condensation flow path are different, and it is often necessary to add a one-way valve assembly 100 and a three-way splitter 9 to reasonably split the evaporation flow path and the condensation flow path to improve the heat exchange efficiency.

[0003] The applicant has discovered that the prior art has at least the following technical problems: adding a one-way valve assembly 100 and a three-way splitter 9 will increase the number of components, complicate the structure, and increase the cost. Utility Model Content

[0004] The purpose of the utility model is to provide a diverter, a heat exchanger and an air conditioner with a one-way diversion function which are simple in structure, low in cost and suitable for large-scale application, so as to solve the technical problems existing in the prior art of complex diversion structure, many parts and high cost of the heat exchanger.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a flow divider with a unidirectional flow dividing function, which is a fork-shaped flow divider, comprising a first end and a second end arranged in sequence; wherein:

[0007] The first end has a first flow channel and a second flow channel arranged side by side;

[0008] The second end has a main flow channel in communication with both the first flow channel and the second flow channel;

[0009] A one-way valve core is arranged in the first flow channel or the second flow channel.

[0010] As a further improvement of the present invention, the specifications of the first flow channel and the second flow channel are the same or different.

[0011] As a further improvement of the present invention, the width of the second end is smaller than the width of the first end, so as to form a transition structure at the junction of the two ends.

[0012] As a further improvement of the present invention, the thickness of the second end is equal to the thickness of the first end.

[0013] As a further improvement of the present invention, both the first flow channel and the second flow channel are circular channels.

[0014] As a further improvement of the present invention, the one-way valve core includes a valve seat and a gravity valve cap that can move closer to or farther away from the valve seat.

[0015] As a further improvement of the present invention, the diameter of the first flow channel or the second flow channel ranges from 7 mm to 12 mm.

[0016] The utility model provides a heat exchanger, which comprises a heat exchanger body and the flow divider installed at the inlet and outlet ends of the heat exchanger body.

[0017] The utility model provides an air conditioner, comprising the heat exchanger.

[0018] As a further improvement of the utility model, it also includes a liquid distributor, a branch pipe, and a three-way branch; wherein:

[0019] The number of the heat exchangers is four groups, namely a first heat exchanger, a second heat exchanger, a third heat exchanger, and a fourth heat exchanger;

[0020] There are two flow dividers, wherein the first flow channel of one of the flow dividers is connected to the first ports of the first heat exchanger and the second heat exchanger respectively through the branch pipe; the second ports of the first heat exchanger and the second heat exchanger are both connected to one end of the flow divider; the second flow channel of one of the flow dividers is connected to the first ports of the third heat exchanger and the fourth heat exchanger respectively through the three-way branch pipe; the second port of the third heat exchanger is connected to one end of the flow divider; the second port of the fourth heat exchanger is connected to the first flow channel of another flow divider; and the second flow channel of the other flow divider is connected to the other end of the flow divider.

[0021] The flow divider with a one-way flow dividing function provided by the utility model integrates the one-way valve function and the fork tube function, can realize the selective flow direction branching of the flow path, and has the characteristics of simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a partial cross-sectional view of the main view of the flow divider with a one-way flow dividing function of the utility model;

[0024] Figure 2 It is a side cross-sectional view of the flow divider with a one-way flow dividing function of the utility model;

[0025] Figure 3 It is a cross-sectional view of a one-way valve core in a flow divider with a one-way flow dividing function of the utility model;

[0026] Figure 4 It is a front cross-sectional view of an embodiment of a gravity valve cap in a one-way valve core in a flow divider with a one-way flow dividing function of the utility model;

[0027] Figure 5 It is a top view of an embodiment of a gravity valve cap in a one-way valve core in a flow divider with a one-way flow dividing function of the utility model;

[0028] Figure 6 It is a front cross-sectional view of a second embodiment of a gravity valve cap in a one-way valve core in a flow divider with a one-way flow dividing function of the utility model;

[0029] Figure 7 It is a top view of a second embodiment of a gravity valve cap in a one-way valve core in a flow divider with a one-way flow dividing function of the utility model;

[0030] Figure 8 It is a top view of a one-way valve core in a flow divider with a one-way flow dividing function of the utility model;

[0031] Fig. 9 It is a system composition diagram of a heat exchanger in an air conditioner in the prior art;

[0032] Fig.10 This is a system composition diagram of the heat exchanger in the air conditioner of the utility model;

[0033] Fig.11 This is a schematic diagram of the refrigerant flow when the air conditioner of the utility model is in a cooling condition;

[0034] Fig.12 It is a schematic diagram of the flow of refrigerant when the air conditioner of the utility model is in a heating condition.

[0035] In the figure, 1, diverter; 11, first end; 111, first flow channel; 112, second flow channel; 12, second end; 121, main flow channel; 2, one-way valve core; 21, valve seat; 22, gravity valve bonnet; 3, first heat exchanger; 4, second heat exchanger; 5, third heat exchanger; 6, fourth heat exchanger; 7, liquid distributor; 8, branch pipe; 9, three-way diverter; 100, one-way valve assembly. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0037] Embodiment 1:

[0038] like Figure 1-Figure 2 As shown, the utility model provides a flow splitter with a unidirectional flow splitting function, which is a fork-shaped flow splitter. The flow splitter is suitable for a system with directional selection of the flow path to achieve a selective blocking or connecting effect on the flow path direction.

[0039] Specifically, in this embodiment, the flow divider 1 is actually composed of a fork-shaped tube and a one-way valve core 2. The flow divider 1 is made of a copper tube, which can be assembled and formed by extruding the corresponding copper tube, or by machining the copper material and then assembling and forming. Of course, the flow divider can also be made of aluminum, stainless steel and other materials. The fork-shaped tube includes a first end 11 and a second end 12 arranged in sequence; wherein:

[0040] The first end 11 has a first flow channel 111 and a second flow channel 112 arranged side by side;

[0041] The second end 12 has a main flow channel 121 in communication with the first flow channel 111 and the second flow channel 112;

[0042] A one-way valve core 2 is disposed in the first flow channel 111 or the second flow channel 112, so that the flow channel has a one-way valve function, and the other flow channel remains straight. When the fluid flows through the one-way valve core 2 in the restricted direction, the fluid encounters resistance and can only be concentrated in the other straight flow path; when the fluid is not in the restricted direction of the one-way valve core 2, all flow paths can flow. The diverter has the advantages of simple structure, simple manufacturing process and low cost.

[0043] It should be noted here that the one-way valve core 2 can prevent backflow, so that the refrigerant can only flow into the main flow channel 121 through the corresponding flow channel, while the refrigerant in the main flow channel 121 cannot flow out through the flow channel where the one-way valve core 2 is set.

[0044] The flow divider 1 with a one-way flow dividing function provided by the utility model integrates the one-way valve function and the fork tube function, can realize the selective flow direction branching of the flow path, and has the characteristics of simple structure and low cost.

[0045] Embodiment 2:

[0046] The only difference between Embodiment 2 and Embodiment 1 is that, in this embodiment, the specifications of the two parallel flow channels of the flow divider are specifically limited.

[0047] like Figure 8 As shown, in this embodiment, the first flow channel 111, the second flow channel 112, and the total flow channel 121 are all circular channels, and the specifications of the first flow channel 111 and the second flow channel 112 can be the same, that is, the diameters of the first flow channel 111 and the second flow channel 112 adopt the same diameter structure, and the diameter range can be 7mm-12mm.

[0048] Of course, the specifications of the first flow channel 111 and the second flow channel 112 can also be different, that is, the diameters of the first flow channel 111 and the second flow channel 112 adopt different diameter structures, and the adapted diameter can be set according to the flow rate required by the system refrigerant and the requirements of the one-way valve core 2. Through this structural setting, the gas and liquid flow paths of the system are reasonably distributed, so that the flow paths are evenly distributed.

[0049] Since two flow paths are provided in the first end 11 , in this embodiment, the width of the second end 12 is smaller than that of the first end 11 , and the thickness of the second end 12 is equal to that of the first end 11 , thereby forming a transition structure at the junction of the two ends.

[0050] By adopting a novel fork-shaped flow divider 1 with a one-way flow dividing function, the effects of simple structure and reduced cost are achieved.

[0051] Embodiment 3:

[0052] The only difference between the present embodiment 3 and the embodiment 1 or the embodiment 2 is that, in the present embodiment, the structure of the one-way valve core 2 is specifically limited.

[0053] like Figure 3-Figure 7 As shown, the one-way valve core 2 includes a valve seat 21 and a gravity valve cap 22 which can move closer to or farther from the valve seat 21 .

[0054] The gravity valve bonnet 22 blocks the flow channel by its own gravity and when there is high-pressure refrigerant above. When the high-pressure refrigerant in the system impacts upward from the bottom, the gravity valve bonnet 22 is pushed open under the pressure to achieve one-way conduction. The size of the valve seat 21 and the gravity valve bonnet 22 matches the diameter of the second flow channel 112 and is assembled. The weight design of the gravity valve bonnet 22 can be configured according to the refrigerant pressure requirements of different systems.

[0055] Through the above structural setting, the problems of complex one-way valve diversion structure and large number of parts required, as well as the high cost of the current one-way valve structure are solved. By adopting a new fork diverter 1 with one-way diversion function, the effect of simple structure and reduced cost is achieved.

[0056] Embodiment 4:

[0057] In this embodiment, Figure 10-12 As shown, the utility model provides a heat exchanger, which includes a heat exchanger body and a splitter 1 installed at the inlet and outlet ends of the heat exchanger body.

[0058] The inlet and outlet of the heat exchanger of the utility model are provided with a flow divider with a one-way flow dividing function, and the flow divider adopts a fork-shaped tube integrated with a one-way valve function, and is composed of a fork-shaped tube and a one-way valve core with a guiding function, thereby realizing the selective flow direction branching of the flow path. In the existing structure, the selective flow direction branching of the flow path needs to be formed by welding a three-way flow divider 9 and a one-way valve assembly 100, which increases the material and process costs.

[0059] In the prior art, the common path unidirectional flow splitting function is realized in the heat exchanger structure in the following two ways:

[0060] 1. One is to use a diverter pipe and a one-way valve to connect to realize the directional diversion function of the fluid; when operating under different conditions of cooling and heating, the high-temperature gaseous and low-temperature gaseous fluids are diverted into the heat exchanger through the diverter pipe and directional diversion flows at the one-way valve;

[0061] 2. Another method is to use Fig. 9 This kind of flow diversion structure should adopt a structure with a common path one-way flow diversion function formed by a three-way splitter 9 and a one-way valve assembly 100, so as to realize the directional flow diversion function of the refrigerant when operating in different working conditions of cooling and heating.

[0062] Both structures have the problems of many parts, high cost and complex structure.

[0063] The heat exchanger provided in this embodiment is provided with a fork-shaped flow divider 1 with a one-way flow dividing function at the inlet and outlet of the heat exchanger. Figure 1 and Fig.10 As shown, under different operating conditions, the fluid realizes directional diversion at the diverter 1 with unidirectional diversion, replacing the current traditional diversion method, such as Fig.11 and Fig.12 As shown, the function of common path unidirectional flow diversion is realized. Compared with the existing flow diversion structure, the diverter structure of the utility model has the advantages of simple and compact structure, few required parts and relatively low cost.

[0064] Embodiment 5:

[0065] like Fig. 9As shown, it is a condenser one-way valve diversion structure in the prior art. Under refrigeration conditions, the gaseous refrigerant enters through the high-temperature and high-pressure end, and after being guided by the three-way splitter 9 and blocked by the one-way valve assembly 100, the refrigerant enters the branch pipe 8, and then enters the two condensers through two branch pipes for condensation. The condensed refrigerant is collected in the liquid separator 7, and under the blocking effect of the one-way valve assembly 100 at the other end of the liquid separator 7, the refrigerant enters the third condenser through the pipeline at one end of the liquid separator 7 to continue condensing. The condensed and liquefied refrigerant finally flows out through the low-temperature and low-pressure end, completing the condensation heat exchange process to obtain a low-temperature liquid refrigerant. Under the air conditioning heating condition, the liquid refrigerant enters through the low temperature and low pressure end, is split by the three-way splitter 9, one path directly enters the condenser for heat exchange and evaporation, and then flows out through the liquid separator, and the other path flows through the one-way valve assembly 100 and the liquid separator 7, and is divided into three paths at the other end of the liquid separator 7 to enter three groups of condensers for evaporation, and the evaporated gaseous refrigerant finally flows out through the branch pipe 8 to complete the evaporation heat exchange process and obtain the gaseous refrigerant. In the prior art, the branching of the refrigerant flow direction is achieved by the combination of the three-way splitter 9 and the one-way valve assembly 100 to meet the function that some systems need the fluid to transfer to the specified flow path at the liquid separator 7. This implementation form has a complex structure, and the entire system includes multiple three-way splitters 9 and multiple one-way valve assemblies 100, with many parts and high cost.

[0066] In order to solve this problem, in this embodiment, Figure 10-12 As shown, the utility model provides an air conditioner, including a heat exchanger.

[0067] There are four groups of heat exchangers, namely, a first heat exchanger 3, a second heat exchanger 4, a third heat exchanger 5, and a fourth heat exchanger 6;

[0068] Specifically, the air conditioner further includes a liquid distributor 7, a branch pipe 8, and a three-way branching device 9;

[0069] It should be noted here that the refrigerant circulating in the heat exchanger in the air conditioner can be a refrigerant medium such as R22 / R32 / R410a / R134a / water / oil.

[0070] There are two splitters 1, among which the first flow channel 111 of one splitter 1 is connected to the first end 11 of the first heat exchanger 3 and the second heat exchanger 4 respectively through the splitter pipe 8; the second end 12 of the first heat exchanger 3 and the second heat exchanger 4 are both connected to one end of the liquid separator 7: the second flow channel 112 of one splitter 1 is connected to the first end 11 of the third heat exchanger 5 and the fourth heat exchanger 6 respectively through the three-way splitter 9; the second end 12 of the third heat exchanger 5 is connected to one end of the liquid separator 7; the second end 12 of the fourth heat exchanger 6 is connected to the first flow channel 111 of another splitter 1; the second flow channel 112 of the other splitter 1 is connected to the other end of the splitter 1.

[0071] Directions:

[0072] In refrigeration conditions, Fig.11 As shown, the gaseous refrigerant enters through the diverter 1, passes through the fork-shaped diverter 1 with a one-way valve function, and then passes through the two branches of the branch pipe 8 to enter the two groups of heat exchangers (the first heat exchanger 3 and the second heat exchanger 4) for condensation. The condensed refrigerant is collected in the liquid separator 7. Under the flow blocking effect of the fork-shaped diverter 1 with a one-way valve function, it enters the third heat exchanger 5 through the third pipe of the liquid separator 7 to continue condensing. The condensed and liquefied refrigerant finally flows through the fourth heat exchanger 6 and then enters the diverter 1 and then flows out, completing the condensation heat exchange process to obtain liquid refrigerant.

[0073] In the air conditioning heating condition, Fig.12 As shown, the liquid refrigerant enters through the lower diverter, and is divided into two flows through the fork-shaped diverter 1 with a one-way valve function. One path directly enters the fourth heat exchanger 6 for heat exchange and evaporation, and then flows out through the upper diverter 1; the other path flows through the fork-shaped diverter 1 and the liquid separator 7, and then is divided into three paths and enters the third heat exchanger 5, the second heat exchanger 4 and the first heat exchanger 3 for evaporation respectively. The evaporated gaseous refrigerant converges through the branch pipe 8 and flows out through the upper diverter 1, completing the evaporation heat exchange process to obtain the gaseous refrigerant.

[0074] From the above, it can be seen that the improved air-conditioning system can complete the selective blocking and connection of the flow direction in the whole system by relying on only two diverters, and the diverter is only composed of a fork tube and a one-way valve core.

[0075] First of all, it should be explained here that “inward” refers to the direction toward the center of the accommodating space, and “outward” refers to the direction away from the center of the accommodating space.

[0076] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0077] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0078] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0079] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0080] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0081] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A flow divider with a one-way flow dividing function, characterized in that: It is a fork-shaped flow divider, comprising a first end and a second end arranged in sequence; wherein: The first end has a first flow channel and a second flow channel arranged side by side; The second end has a main flow channel in communication with both the first flow channel and the second flow channel; A one-way valve core is arranged in the first flow channel or the second flow channel.

2. The flow divider with one-way flow dividing function according to claim 1, characterized in that: The specifications of the first flow channel and the second flow channel are the same or different.

3. The flow divider with one-way flow dividing function according to claim 1, characterized in that: The width of the second end is smaller than the width of the first end, so as to form a transition structure at the junction of the two ends.

4. The flow divider with one-way flow dividing function according to claim 3, characterized in that: The second end thickness is equal to the first end thickness.

5. The flow divider with one-way flow dividing function according to claim 1, characterized in that: The first flow channel and the second flow channel are both circular channels.

6. The flow divider with one-way flow dividing function according to claim 1, characterized in that: The one-way valve core comprises a valve seat and a gravity valve cap which can be moved closer to or farther from the valve seat.

7. The flow divider with one-way flow dividing function according to claim 1, characterized in that: The diameter of the first flow channel or the second flow channel ranges from 7 mm to 12 mm.

8. A heat exchanger, characterized in that: The invention comprises a heat exchanger body and a flow divider as claimed in any one of claims 1 to 7 installed at the inlet and outlet ends of the heat exchanger body.

9. An air conditioner, characterized in that: Comprising the heat exchanger as claimed in claim 8.

10. The air conditioner according to claim 9, characterized in that: It also includes a liquid distributor, a branch pipe, and a three-way distributor; wherein: The number of the heat exchangers is four groups, namely a first heat exchanger, a second heat exchanger, a third heat exchanger, and a fourth heat exchanger; There are two flow dividers, wherein the first flow channel of one of the flow dividers is connected to the first ports of the first heat exchanger and the second heat exchanger respectively through the branch pipe; the second ports of the first heat exchanger and the second heat exchanger are both connected to one end of the flow divider; the second flow channel of one of the flow dividers is connected to the first ports of the third heat exchanger and the fourth heat exchanger respectively through the three-way branch pipe; the second port of the third heat exchanger is connected to one end of the flow divider; the second port of the fourth heat exchanger is connected to the first flow channel of another flow divider; and the second flow channel of the other flow divider is connected to the other end of the flow divider.

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