Distributor for air conditioner and air conditioner

Abstract

The utility model relates to the technical field of air conditioners, and discloses a distributor for an air conditioner, comprising: a housing comprising a liquid inlet and a liquid outlet formed in the housing; the number of the liquid outlets is multiple, and each liquid outlet is connected with one liquid outlet branch pipe. The plurality of throttle valves are arranged in the shell and are annularly and uniformly distributed around the central axis of the shell; the liquid outlet end of each throttling valve corresponds to one liquid outlet and is connected to one liquid outlet branch pipe so as to adjust the refrigerant flow of the corresponding liquid outlet branch pipe. According to the device, a plurality of throttling valves are arranged in a shell of a distributor, and the throttling valves are annularly and uniformly distributed around the center line of the shell, so that it is guaranteed that refrigerants are uniformly distributed to all the throttling valves in the initial state. And when the refrigerants of all the liquid outlet branches are distributed unevenly, the opening degrees of the matched throttling valves can be adjusted respectively, so that the refrigerants of all the liquid outlet branches are kept uniform. The refrigerant flow of the multiple branches can be adjusted at the same time, and the adjusting efficiency is improved. The utility model further discloses the air conditioner.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, for example, to a distributor for an air conditioner and an air conditioner. Background Art

[0002] The distributors of existing air conditioners generally only function as liquid distributors. For an air conditioner heat exchanger with multiple paths of flow splitting, during actual operation, the problem of uneven flow splitting often occurs. The uneven flow splitting of the heat exchanger will directly lead to uneven temperatures of the hairpin tubes for each path of flow splitting, causing hot and cold airflows to intersect inside the heat exchanger, and then forming condensation. In addition, it directly affects the heat transfer of the aluminum foil fins in each path of flow splitting, thereby reducing the capacity and energy efficiency of the air conditioner. It even indirectly causes waste of refrigerant, increasing costs.

[0003] A related technology discloses an electric flow distributor, including a valve housing, an input connection pipe, multiple outlets, an outlet connection pipe connected to the outlets, a driving stepping motor, and a transmission mechanism driven by the stepping motor. A valve cavity is formed inside the valve housing, and the input connection pipe is connected to the valve cavity. This electric flow distributor realizes the flow distribution among the multiple outlets by driving the transmission mechanism inside the valve cavity to rotate through the stepping motor; the stepping motor includes a coil component fixed outside the valve housing and a magnetic rotor component inside the valve housing corresponding to the magnetic poles of the coil component. During operation, by energizing the coil component, the coil component continuously switches between multiple phases, so that the magnetic rotor component inside the valve housing rotates continuously, driving the transmission mechanism inside the valve cavity to rotate, and controlling the time ratio of the conduction of the multiple outlets to the valve cavity, thereby realizing the flow distribution among the multiple outlets.

[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 technology:

[0005] Although the related technology can achieve flow distribution, when the flow distribution among multiple paths is uneven, it is necessary to adjust each outlet one by one, and the adjustment efficiency is low.

[0006] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present application, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Utility Model

[0007] To have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This 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.

[0008] Embodiments of the present disclosure provide a distributor for an air conditioner and an air conditioner, which can achieve uniform flow distribution with high adjustment efficiency in the case of uneven multi-path flow splitting.

[0009] In some embodiments, the distributor for an air conditioner includes:

[0010] A housing, a liquid inlet and a liquid outlet provided on the housing; the liquid outlet is plural, and each liquid outlet is connected to a liquid outlet branch pipe;

[0011] A plurality of throttle valves, provided in the housing and uniformly arranged in a ring shape with the central axis of the housing as the center; the liquid outlet end of each throttle valve corresponds to a liquid outlet and is connected to a liquid outlet branch pipe to adjust the refrigerant flow rate of the corresponding liquid outlet branch pipe.

[0012] Optionally, the throttle valves are all horizontally arranged in the housing, or the throttle valves are all vertically arranged in the housing.

[0013] Optionally, when the throttle valves are horizontally arranged in the housing, the liquid outlet ends of the throttle valves are arranged at the bottom of the housing, and the liquid inlet ends of the throttle valves communicate with the mixing chamber of the housing.

[0014] Optionally, when the throttle valves are horizontally arranged in the housing, the liquid outlet ends of the throttle valves are arranged on the side wall of the housing, and the liquid inlet ends of the throttle valves communicate with the mixing chamber of the housing through the liquid distribution pipe of the housing.

[0015] Optionally, the throttle valve includes:

[0016] A valve body;

[0017] A coil, arranged outside the valve body;

[0018] A rotor, arranged inside the valve body, a valve rod is provided on the rotor, and when the coil is energized, the rotor rotates along the inner wall of the valve body to drive the valve rod to move up and down;

[0019] A valve seat, which cooperates with the first end of the valve rod to form different sizes of flow cross-sections when the valve rod moves to adjust the refrigerant flow rate.

[0020] Optionally, the throttle valve further includes: a fixing column, arranged inside the valve body and in threaded cooperation with the rotor.

[0021] Optionally, the valve rod penetrates through the fixing column, and a positioning block is provided at the second end of the valve rod to limit the valve rod when the valve rod moves up and down.

[0022] Optionally, the distributor for an air conditioner further includes: a temperature sensor, used to detect the refrigerant temperature at the inlet of each liquid outlet branch pipe.

[0023] Optionally, the dispenser for the air conditioner further includes: a processor, connected to the coil of the throttle valve and the temperature sensor, and configured to control the coil based on the detected refrigerant temperature to adjust the flow cross-section of the valve seat and the valve stem.

[0024] In some embodiments, the air conditioner includes: a refrigeration system; and the dispenser as described above, installed in the refrigeration system.

[0025] The dispenser for the air conditioner and the air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0026] In the embodiments of the present disclosure, a plurality of throttle valves are provided in the housing of the dispenser, and the number of throttle valves is the same as the number of liquid outlet branch pipes of the dispenser. The plurality of throttle valves are evenly distributed in a ring shape with the center line of the housing, so as to ensure that the refrigerant is evenly distributed to each throttle valve in the initial state. And because each liquid outlet branch pipe is provided with a corresponding throttle valve, when the refrigerant distribution in each liquid outlet branch is uneven, the opening degree of the matching throttle valve can be adjusted respectively to make the refrigerant in each liquid outlet branch uniform. In this way, the refrigerant flow rate of multiple branches can be adjusted simultaneously, improving the adjustment efficiency.

[0027] The above general description and the following description are only exemplary and explanatory, and are not used to limit the present application. Description of the Drawings

[0028] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute limitations 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:

[0029] Figure 1 is an overall schematic diagram of a dispenser for an air conditioner provided by an embodiment of the present disclosure;

[0030] Figure 2 is another overall schematic diagram of a dispenser for an air conditioner provided by an embodiment of the present disclosure;

[0031] Figure 3 is a partial structural schematic diagram of a dispenser for an air conditioner provided by an embodiment of the present disclosure;

[0032] Figure 4 is a refrigerant flow direction schematic diagram of a dispenser for an air conditioner provided by an embodiment of the present disclosure;

[0033] Figure 5 is another refrigerant flow direction schematic diagram of a dispenser for an air conditioner provided by an embodiment of the present disclosure;

[0034] Figure 6 is provided by an embodiment of the present disclosure Figure 2Schematic top - down sectional structure diagram of the structure;

[0035] Figure 7 It is a schematic diagram of an air conditioner provided by an embodiment of the present disclosure.

[0036] Reference numerals:

[0037] 10: Housing; 20: Throttle valve; 30: Liquid outlet branch pipe; 40: Temperature sensor; 11: Liquid inlet; 12: Liquid outlet; 13: Mixing chamber; 14: Liquid distribution chamber; 21: Valve body; 22: Coil; 23: Rotor; 24: Valve rod; 25: Valve seat; 26: Fixed column; 27: Positioning block; 101: Compressor; 102: Four - way valve; 103: Condenser; 104: Throttling device; 105: Evaporator; 106: Distributor. Detailed implementation manners

[0038] 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 for reference and illustration only, and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, numerous details are provided to give 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 may be shown in a simplified manner to simplify the drawings.

[0039] In the embodiments of the present disclosure, terms such as "first", "second", etc. in the description and claims of the embodiments of the present disclosure and the above - mentioned drawings are used to distinguish similar objects, and do not necessarily have to be used to 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 "include" and "have" and any variations thereof are intended to cover non - exclusive inclusion.

[0040] In the embodiments of the present disclosure, the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "middle", "outer", "front", "rear", etc. 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 embodiments, 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. And, in addition to being able to represent the orientation or positional relationship, some of the above - mentioned 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.

[0041] 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 a direct connection, or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. 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.

[0042] Unless otherwise specified, the term "plurality" means two or more.

[0043] In the embodiments of the present disclosure, the character " / " indicates that the objects before and after are in an "or" relationship. For example, A / B means: A or B.

[0044] The term "and / or" is a description of the associated relationship of 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.

[0045] It should be noted that, without conflict, the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0046] Combined Figure 1 、 2 As shown, the embodiments of the present disclosure provide a dispenser for an air conditioner, which includes a housing 10, a throttle valve 20, and a liquid outlet branch pipe 30. Among them, a liquid inlet 11 and a liquid outlet 12 are provided on the housing 10; there are a plurality of liquid outlets 12, and each liquid outlet 12 is connected to a liquid outlet branch pipe 30. There are a plurality of throttle valves 20, which are arranged in the housing 10 and are evenly distributed in a ring centered on the central axis of the housing 10 (such as Figure 4 、 5 the dotted line in). The liquid outlet end of each throttle valve 20 corresponds to a liquid outlet 12 and is connected to a liquid outlet branch pipe 30 to adjust the refrigerant flow rate of the corresponding liquid outlet branch pipe 30.

[0047] Here, the housing has an inner cavity. On the one hand, the refrigerant enters the inner cavity of the housing through the liquid inlet and then flows to each diverter for diversion. On the other hand, the throttle valve is placed in the inner cavity of the housing. Specifically, the inner cavity includes a mixing cavity, which communicates with the liquid inlet on the distributor housing and also communicates with the throttle valve. In this way, the refrigerant flows into each throttle valve through the mixing cavity. Among them, the throttle valve has an outlet end and an inlet end. The inlet end communicates with the inner cavity of the housing, and the outlet end is arranged at the liquid outlet of the housing and is connected to the liquid outlet branch pipe. The inlet ends of each throttle valve can be located in the mixing cavity, that is, directly communicate with the mixing cavity. Or, the mixing cavity includes a liquid separation cavity, and the inlet ends of each throttle valve communicate with the mixing cavity through the liquid separation cavity. The connection situation between the mixing cavity and the throttle valve depends on the position of the throttle valve in the housing. The number of throttle valves matches the number of liquid outlet branch pipes. In this way, the refrigerant flow rate of a certain liquid outlet branch pipe can be adjusted individually, or the refrigerant flow rates of some liquid outlet branch pipes can be adjusted simultaneously. The multiple throttle valves are evenly distributed in a ring shape with the center line of the housing, so as to ensure that the refrigerant is evenly distributed to each throttle valve in the initial state.

[0048] Using the distributor for an air conditioner provided by the embodiment of the present disclosure, a plurality of throttle valves are arranged in the housing of the distributor, and the number of throttle valves is the same as the number of liquid outlet branch pipes of the distributor. Since each liquid outlet branch pipe is configured with a corresponding throttle valve, when the refrigerant distribution in each liquid outlet branch is uneven, the opening degrees of the matching throttle valves can be adjusted respectively to make the refrigerant in each liquid outlet branch uniform. In this way, the refrigerant flow rates of multiple branches can be adjusted simultaneously, improving the adjustment efficiency. And it can solve the problem of uneven diversion caused by uneven refrigerant flow rates in each branch of the evaporator.

[0049] Combined with Figures 3 - 5 As shown, optionally, the throttle valves 20 are all horizontally arranged in the housing 10, or the throttle valves 20 are all vertically arranged in the housing 10.

[0050] As described above, the throttle valve 20 has two ports, an inlet end a and an outlet end b. Generally, the two ports of the throttle valve are arranged at 90 degrees. In this way, the throttle valve can be installed in two different installation methods when installed. Specifically, the throttle valve can be vertically arranged in the housing, that is, the main body of the throttle valve (or the central axis of the throttle valve) is parallel to the central axis of the housing. Or, the throttle valve can be horizontally arranged in the housing, that is, the main body of the throttle valve is perpendicular to the central axis of the housing.

[0051] It can be understood that generally the longitudinal section of the throttle valve is larger than the transverse section. When the size of the throttle valve is fixed, the size of the inner cavity of the distributor can determine the installation method of the throttle valve. Specifically, when the transverse space in the inner cavity of the distributor is larger than the longitudinal space, the throttle valve is horizontally arranged in the inner cavity of the housing. When the transverse space in the inner cavity of the distributor is smaller than the longitudinal space, the throttle valve is vertically arranged in the inner cavity of the housing. In this way, it can be ensured that each throttle valve can be reasonably arranged in the distributor housing.

[0052] Combined with Figure 3 、 4 Optionally, when the throttle valve 20 is vertically arranged in the housing 10, the liquid outlet end of the throttle valve 20 is arranged at the bottom of the housing 10, and the liquid inlet end of the throttle valve 20 is communicated with the mixing chamber 13 of the housing 10.

[0053] Here, as described above, the liquid outlet end and the liquid inlet end of the throttle valve are arranged at 90°, and a plurality of throttle valves are evenly distributed in a ring shape with the central axis of the housing in the distributor. Therefore, when the throttle valve is vertically arranged in the housing, the liquid inlet ends of the respective throttle valves face the central axis of the housing, and the liquid outlet ends are arranged at the bottom of the distributor housing. At the same time, after such an arrangement, the liquid inlet ends of the respective throttle valves are directly communicated with the mixing chamber of the housing. In this way, the internal structure of the distributor is relatively simple, and this arrangement is applicable to the case where there is sufficient longitudinal space in the inner cavity of the throttle valve housing.

[0054] Optionally, when the throttle valve 20 is horizontally arranged in the housing 10, the liquid outlet end of the throttle valve 20 is arranged on the side wall of the housing 10, and the liquid inlet end of the throttle valve 20 is communicated with the mixing chamber 13 of the housing through the liquid distribution chamber 14 of the housing 10.

[0055] Here, when the throttle valve is horizontally arranged, the center line of the liquid inlet end of each throttle valve (the center line along the liquid inlet direction) is parallel to the central axis of the housing, and the center line of the liquid outlet end is perpendicular to the central axis of the housing. At this time, the liquid inlet ends of the respective throttle valves and the liquid inlet port of the distributor face the same direction. If the liquid inlet end of the throttle valve is directly communicated with the mixing chamber in the inner cavity of the distributor housing, a large amount of refrigerant will remain in the housing mixing chamber, which is not conducive to the circulation of the refrigerant. In order to ensure that the refrigerant at the liquid inlet port can be distributed to each throttle valve and not store too much refrigerant in the mixing chamber, the mixing chamber and the liquid inlet end of the throttle valve are communicated through the liquid distribution chamber. The number of liquid distribution chambers is the same as the number of throttle valves. In addition, in this arrangement, the liquid outlet ends of the respective throttle valves are located on the side wall of the housing and are evenly distributed in a ring shape. This arrangement is applicable to the case where there is sufficient lateral space in the inner cavity of the throttle valve housing.

[0056] Optionally, the throttle valve 20 includes: a valve body 21, a coil 22, a rotor 23, a valve rod 24, and a valve seat 25. Among them, the coil 22 is arranged outside the valve body 21. The rotor 23 is arranged inside the valve body 21. A valve rod 24 is provided on the rotor 23. When the coil 22 is energized, the rotor 23 rotates to drive the valve rod 24 to move up and down. The valve seat 25 cooperates with the first end of the valve rod 24 to form different sizes of flow cross-sections when the valve rod 24 moves, so as to adjust the refrigerant flow rate.

[0057] Here, a coil is provided outside the throttle valve body, and the coil can be energized. Inside the valve body and at a position corresponding to the coil, a rotor is provided, and the rotor can be in threaded engagement with the inner wall of the valve body. When the coil is energized, the rotor rotates along the inner wall of the valve body under the action of the magnetic field, thereby realizing the up and down displacement of the rotor and driving the valve stem connected to the valve to move up and down. In this way, the distance between the valve stem and the valve seat is different, forming different sizes of flow cross-sections to achieve the regulation of the refrigerant flow rate. In addition, a component in threaded engagement with the rotor can also be provided inside the valve body. This component is fixed to the throttle valve body, and the rotor can be sleeved outside this component or arranged inside this component, so as to realize the rotational movement of the rotor under the action of the coil.

[0058] Optionally, the first end of the valve stem 24 is a conical structure, and the opening end of the valve seat 25 is an external structure matching the conical structure.

[0059] In this way, when the valve stem moves to the lowest position, the first end of the valve stem and the opening end of the valve seat just match, making the flow cross-section zero. That is, at this time, the corresponding throttle valve is in the closed state and does not allow the refrigerant to flow through.

[0060] Optionally, the throttle valve 20 further includes a fixing column 26. The fixing column 26 is arranged inside the valve body 21, and a rotor 23 is sleeved on the fixing column 26, and the fixing column 26 is in threaded engagement with the rotor 23.

[0061] Here, the throttle valve further includes a fixing column, and the fixing column is fixed inside the valve body. And the rotor is sleeved on the fixing column. The outer surface of the fixing column is provided with a threaded structure, and the rotor is a hollow structure and the inner surface is provided with a threaded structure. The fixing column and the rotor cooperate, and when the rotor is controlled to rotate, it can rotate along the fixing column to generate up and down displacement. In this way, the rotor is sleeved on the outer surface of the fixing column, making the rotor more easily controlled by the coil outside the valve body.

[0062] It can be understood that if a threaded structure is provided on the inner wall of the valve body, certain requirements are imposed on the wall thickness of the valve body. On the one hand, the valve body needs to bear the gravity of the rotor, and on the other hand, it needs to bear the frictional force of the rotor rotation. Therefore, the wall of the valve body needs to have a certain thickness. However, the wall thickness of the valve body will make the control of the rotor insensitive, or a sufficiently large magnetic field needs to be generated to drive the rotor to rotate. Similarly, if the rotor is arranged inside the fixing column, the wall of the fixing column will affect the control sensitivity of the rotor and the magnitude of the required magnetic field. Based on the above problems, a fixing column is provided and the rotor is sleeved on the fixing column. In this way, the self-weight of the rotor is lighter and the barrier between the rotor and the signal generated by the coil is less, which is beneficial to control.

[0063] Optionally, the valve stem 24 penetrates through the fixing column 26, and a positioning block 27 is provided at the second end of the valve stem 24 to limit the valve stem 24 when the valve stem 24 moves up and down.

[0064] Here, the valve stem is arranged on the rotor, and the rotor is sleeved on the fixed column. Therefore, the valve stem penetrates through the fixed column, and there is a gap between the two, thereby reducing the resistance and friction when the valve stem moves up and down. In some embodiments, the hollow structure of the rotor is a hollow structure that does not penetrate both ends of the rotor, and only one end penetrates, so that the rotor is sleeved on the fixed column. At this time, the valve stem is fixed to the other end of the rotor. In another embodiment, the rotor is a hollow structure that penetrates both ends. At this time, the valve stem is installed on one end of the rotor through a fixing member; this installation structure facilitates the installation and maintenance of the throttle valve.

[0065] In addition, a positioning block is provided at the second end of the valve stem for limiting the valve stem (and also limiting the rotor). As described above, when the valve stem and the valve seat cooperate to control the refrigerant flow rate, it is necessary to ensure that the throttle valve is in the closed state when the valve stem is in the extreme position. At this time, if the valve stem continues to move, it may damage the valve seat or the rotor. Therefore, a positioning block is provided here to prevent the valve stem from continuing to move. Among them, the thickness of the positioning block and the internal space formed by the rotor and the positioning column determine the stroke size of the valve stem. When the internal space and the stroke are determined, the limit adjustment of the valve stem can be achieved by the thickness after positioning.

[0066] Optionally, the distributor further includes a temperature sensor 40, which is arranged at the inlet of each liquid outlet branch pipe 30 for detecting the refrigerant temperature at the inlet of each liquid outlet branch pipe 30.

[0067] Here, temperature sensors are arranged at the inlets of each liquid outlet branch pipe for detecting the refrigerant temperature at the inlets of each liquid outlet branch pipe. When the distributor is installed in the air conditioner, each throttle valve of the distributor is regulated based on the temperature at the inlet of each liquid outlet branch pipe and the temperature of the indoor coil. As an example, in the cooling mode, if the difference between the temperature at the inlet of the liquid outlet branch pipe and the temperature of the indoor coil is large, and the temperature at the inlet of the liquid outlet branch pipe is greater than the temperature of the indoor coil, the opening degree of the throttle valve is increased. If the difference is large, and the temperature at the inlet of the liquid outlet branch pipe is less than the temperature of the indoor coil, the opening degree of the throttle valve is decreased.

[0068] Optionally, the distributor further includes a processor, which is connected to the coil 22 of the throttle valve and the temperature sensor 40, and is configured to control the coil 22 based on the detected refrigerant temperature to regulate the flow cross-section between the valve seat 25 and the valve stem 24.

[0069] Here, the processor determines whether it is necessary to adjust the opening degree of the throttle valve based on the detection value of the temperature sensor. If necessary, it controls the coil to be energized. It controls the rotor to rotate to drive the valve stem to move up and down to regulate the size of the flow cross-section between the valve seat and the valve stem. The adjustment of the refrigerant flow rate is realized to ensure the uniformity of the refrigerant flow rate in each branch.

[0070] Combined with Figure 7As shown in the figure, an embodiment of the present disclosure provides an air conditioner, which includes a refrigeration cycle circuit and the distributor 106 described above. Among them, the refrigeration cycle circuit includes a compressor 101, a four-way valve 102, a condenser 103, a throttling device 104, and an evaporator 105 connected in sequence. Among them, the distributor 106 is arranged on the pipeline between the throttling device 104 and the evaporator 105 to adjust the uniformity of the refrigerant flow rate in each path of the evaporator 105.

[0071] During the operation of the air conditioner, the temperature sensor detects the refrigerant temperature at the inlet of each liquid outlet branch pipe and the temperature of the evaporator coil in real time (such as detecting the temperature in the middle of the coil). The processor then determines whether each throttle valve of the distributor needs to be adjusted in combination with parameters such as the operation mode of the air conditioner, the indoor fan speed, and the ambient relative humidity.

[0072] Specifically, in the case where the target mode is the cooling mode, when the indoor fan speed is less than or equal to the first wind speed, the relative humidity of the indoor environment is obtained. When the relative humidity of the indoor environment is greater than or equal to the relative humidity threshold, the correction parameter value of the throttle valve opening is determined to be the first range value. According to each temperature difference, the target correction parameter value of the throttle valve opening is determined within the first range value.

[0073] When the indoor fan speed is less than or equal to the first wind speed and the relative humidity is less than the relative humidity threshold, or when the indoor unit fan is greater than the first wind speed, the correction parameter value of the throttle valve opening is determined to be the second range value. According to each temperature difference, the target correction parameter value of the throttle valve opening is determined within the second range value.

[0074] It can be understood that when the indoor fan speed is low, if the indoor relative humidity is high, then the air circulation is slow and the contact time with the heat exchanger is long, and condensation is more likely to occur. Therefore, in the cooling mode and when the indoor fan speed is less than or equal to the first wind speed, the relative humidity of the indoor environment is obtained. If the relative humidity is high, that is, the relative humidity is greater than or equal to the relative humidity threshold, then the correction parameter value of the throttle valve opening is determined to be the first range value. Then, based on the temperature difference between the inlet temperature of each liquid outlet branch pipe and the indoor coil temperature, the target correction parameter value is determined within the first range value.

[0075] In the above scenario, the risk of condensation in the air conditioner is relatively high. Therefore, the first range value is a relatively large value compared to other scenarios. In addition, the first wind speed can be a specific wind speed value or a wind gear. In the embodiments of the present disclosure, the first wind speed is the low wind speed or the medium-low wind speed. The value range of the relative humidity threshold is 60% - 75%, and it can be, for example, 70%.

[0076] In this way, if the risk of condensation is relatively high in the cooling mode, the overall adjustment range of the throttle valve is relatively large. Specifically, when the temperature at the inlet of the liquid outlet branch is greater than the temperature of the indoor coil and the absolute value of the difference between the two is relatively large, it indicates that the refrigerant amount in the corresponding heat exchanger is small, so the opening of the corresponding throttle valve is increased. When the temperature at the inlet of the liquid outlet branch is less than the temperature of the indoor coil and the absolute value of the difference between the two is relatively large, it indicates that the refrigerant amount is relatively large, so the opening of the corresponding throttle valve is decreased. In this way, the uniformity of the refrigerant flow rate in each liquid outlet branch is strictly controlled to avoid phenomena such as uneven condensation and water blowing caused by uneven flow distribution.

[0077] When the indoor fan speed is relatively high and / or the indoor humidity is relatively low, uneven refrigerant distribution will cause hot and cold air to converge in the air duct, thereby generating condensation, but the risk of condensation is relatively low. Therefore, in this case, the correction parameter value of the throttle valve opening is the second range value. The maximum value of the second range value is less than the maximum value of the first range value, and the minimum value of the second range value is also less than the minimum value of the first range value. As an example, the correction parameter value is a correction coefficient; the first range value is [0.5, 0.9], and the second range value is [0.3, 0.7]. In this way, when the risk of condensation is relatively low in the cooling mode, the adjustment range of the throttle valve can be reduced. In the case of small adjustments, uniform distribution of the refrigerant in each branch of the evaporator can be achieved.

[0078] Through the mapping relationship between the absolute value of the difference and the correction parameter value, the target correction parameter value corresponding to the difference is determined. Specifically, the absolute value of the difference is divided into multiple intervals, and each interval corresponds to a correction parameter value. As an example, the first range value is [0.5, 0.9]. When 3°C < |ΔTi| ≤ 4°C, the target correction parameter value is determined to be 0.5. When 4°C < |ΔTi| ≤ 6°C, the target correction parameter value is determined to be 0.7. When 6°C ≤ |ΔTi|, the target correction parameter value is determined to be 0.9. The second range value is [0.3, 0.7]. When 3°C < |ΔTi| ≤ 4°C, the target correction parameter value is determined to be 0.3. When 4°C < |ΔTi| ≤ 6°C, the target correction parameter value is determined to be 0.5. When 6°C < |ΔTi|, the target correction parameter value is determined to be 0.7. In this way, the greater the absolute value of the difference, the greater the adjustment amplitude of the throttle valve opening.

[0079] In the case where the target mode is the heating mode, when the indoor fan speed is greater than or equal to the second wind speed, the correction parameter value of the corresponding throttle valve opening is determined to be the third range value; and, according to each temperature difference, the target correction parameter value of the corresponding throttle valve opening is determined within the third range value. When the indoor fan speed is less than the second wind speed, it is determined to keep each throttle valve at its current opening.

[0080] For the throttling valve regulation in the heating mode. Specifically, when the indoor fan speed is greater than or equal to the second wind speed, it indicates that the indoor heating demand is relatively large. Therefore, if the refrigerant distribution is uneven, the correction parameter value of the throttling valve opening is the third range value. Then, based on the temperature difference corresponding to each liquid outlet branch pipe, the target correction parameter is matched within the third range value. The method of matching the target correction parameter is the same as that in the above text, and the minimum value of the third range value is less than the minimum value of the second range value, and the maximum value of the third range value is less than the maximum value of the second range value. As an example, when 3°C < |ΔTi| ≤ 4°C, the target correction parameter value is determined to be 0.1. When 4°C < |ΔTi| ≤ 6°C, the target correction parameter value is determined to be 0.2. When 6°C < |ΔTi|, the target correction parameter value is determined to be 0.3.

[0081] When the indoor fan speed is less than the second wind speed, it indicates that the indoor heating demand is relatively small, and the correction parameter value of the throttling valve opening is zero, that is, the throttling valve is not adjusted. When the heating demand is low, even if the temperature differences between the inlet temperatures of each liquid outlet branch pipe and the indoor coil temperature are greater than the allowable minimum temperature difference, the throttling valve is not adjusted.

[0082] Then, the processor corrects the opening of the corresponding throttling valve according to the target correction parameter value. Specifically, it includes: the processor determines the correction amplitude based on the correction parameter value and the temperature difference. The processor corrects the opening of the corresponding throttling valve according to the correction amplitude.

[0083] Among them, the correction parameter value is the correction coefficient value. The correction amplitude is determined based on the correction coefficient value and the temperature difference. Specifically, the product of the correction coefficient value and the temperature difference can be used as the correction amplitude. Among them, when the inlet temperature of the liquid outlet branch pipe is greater than the indoor coil temperature, the temperature difference is positive. If the correction amplitude is positive, the opening of the throttling valve is increased according to the correction amplitude. When the inlet temperature of the liquid outlet branch pipe is less than the indoor coil temperature, the temperature difference is negative. If the correction amplitude is negative, the opening of the throttling valve is decreased according to the correction amplitude. In this way, the adjustment direction and adjustment amplitude of the throttling valve can be determined based on the correction amplitude.

[0084] 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 replaced by those 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 distributor for an air conditioner, characterized in that, Comprising: A housing, including a liquid inlet and a liquid outlet provided on the housing; there are a plurality of the liquid outlets, and each liquid outlet is connected to a liquid outlet branch pipe; A plurality of throttle valves, arranged in the housing and evenly distributed in a ring centered on the central axis of the housing; the liquid outlet end of each throttle valve corresponds to a liquid outlet and is connected to a liquid outlet branch pipe to adjust the refrigerant flow rate of the corresponding liquid outlet branch pipe.

2. The dispenser according to claim 1, wherein, All of the throttle valves are horizontally arranged in the housing, or all of the throttle valves are vertically arranged in the housing.

3. The distributor according to claim 2, wherein When the throttle valve is vertically arranged in the housing, the liquid outlet end of the throttle valve is arranged at the bottom of the housing, and the liquid inlet end of the throttle valve is communicated with the mixing chamber of the housing.

4. The distributor according to claim 2, wherein When the throttle valve is horizontally arranged in the housing, the liquid outlet end of the throttle valve is arranged on the side wall of the housing, and the liquid inlet end of the throttle valve is communicated with the mixing chamber of the housing through the liquid distribution chamber of the housing.

5. The dispenser according to claim 1, characterized in that, The throttle valve includes: A valve body; A coil, arranged outside the valve body; A rotor, arranged inside the valve body, and a valve rod is provided on the rotor. When the coil is energized, the rotor rotates to drive the valve rod to move up and down; A valve seat, cooperating with the first end of the valve rod to form different sizes of flow cross-sections when the valve rod moves, so as to adjust the refrigerant flow rate.

6. The dispenser according to claim 5, characterized in that, The throttle valve further includes: A fixing column, arranged inside the valve body, and the rotor is sleeved on the fixing column, and the fixing column is in threaded cooperation with the rotor.

7. The distributor according to claim 6, wherein The valve rod penetrates through the fixing column, and a positioning block is provided at the second end of the valve rod to limit the valve rod when the valve rod moves up and down.

8. The dispenser according to any one of claims 1 to 7, characterized in that, Further comprising: A temperature sensor, arranged at the inlet of each liquid outlet branch pipe, for detecting the refrigerant temperature at the inlet of each liquid outlet branch pipe.

9. The dispenser according to claim 8, wherein, Further comprising: A processor, connected to the coil of the throttle valve and the temperature sensor, and configured to control the coil based on the detected refrigerant temperature to adjust the flow cross-section of the valve seat and the valve rod.

10. An air conditioner, characterized in that, Comprising: A refrigeration system; The distributor according to any one of claims 1 to 9, installed in the refrigeration system.

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