Control valve device

Abstract

The utility model relates to a control valve device which is applied to an air conditioning system, and the control valve device comprises a control valve which comprises a connecting rod, a heating medium valve element and a refrigerant valve element, and the heating medium valve element and the refrigerant valve element are both connected with the connecting rod; the heating medium mechanism comprises a heating medium shell, the connecting rod is arranged in the heating medium shell in a sliding and penetrating mode, and the heating medium valve element is arranged in the heating medium shell in a sliding mode so that a heat supply channel with the adjustable volume can be defined by the heating medium valve element and the heating medium shell; the refrigerant mechanism comprises a refrigerant shell, the connecting rod is arranged in the refrigerant shell in a sliding and penetrating mode, the refrigerant valve element is arranged in the refrigerant shell in a sliding mode so as to define a first cold supply channel and a second cold supply channel with the refrigerant shell, and the volume of the first cold supply channel and the volume of the second cold supply channel can be adjusted. And the change rules of the volumes of the first cold supply channel and the second cold supply channel are opposite. Therefore, the energy consumption of the air-conditioning system can be reduced.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to a control valve device. Background Technology

[0002] A constant temperature and humidity air conditioning system can absorb some fresh outdoor air and some return air from the workplace. The fresh and return air mix to form a mixed air system, which is then processed for temperature and humidity control within the system enclosure before being re-delivered to the workplace. In hot and humid outdoor conditions, the humidity of the mixed air will be too high. It is necessary to lower the temperature of the mixed air to or below its dew point and dehumidify it. After lowering it to the dew point, the mixed air temperature is relatively low. If this low-temperature mixed air is directly delivered to the workplace, it may cause the workplace temperature to be too low. This can lead to condensation at and near the low-temperature air outlets, causing quality issues and discomfort to personnel. Currently, the main method to increase the temperature of the mixed air is to use a steam heater for reheating; however, this method has the drawback of high energy consumption. Utility Model Content

[0003] One of the technical problems addressed by this application is how to reduce the energy consumption of air conditioning systems.

[0004] A control valve device is used in an air conditioning system, the control valve device comprising:

[0005] A control valve includes a connecting rod, a heat medium valve core, and a refrigerant valve core, wherein the heat medium valve core and the refrigerant valve core are both connected to the connecting rod;

[0006] A heat transfer mechanism includes a heat transfer housing, a connecting rod that slides through the heat transfer housing, and a heat transfer valve core that slides within the heat transfer housing to form a heating channel with an adjustable volume.

[0007] The refrigerant mechanism includes a refrigerant housing, a connecting rod that slides through the refrigerant housing, and a refrigerant valve core that slides within the refrigerant housing to form an adjustable first and second cooling channel.

[0008] When the volume of the heating channel can change, the volume changes of the first cooling channel and the second cooling channel follow opposite patterns.

[0009] In one embodiment, the heat medium shell includes a shell body and a support member. The shell body forms a heat medium cavity. The support member protrudes from the bottom wall of the heat medium cavity and is spaced apart from the top wall of the heat medium cavity. The heat medium valve core abuts against the side wall of the heat medium cavity and can be supported on the support member. A heating regulating cavity is formed between the heat medium valve core, the shell body, and the support member. When the distance between the heat medium valve core and the support member changes, the opening size of the heating regulating cavity between the heat medium valve core and the support member changes. A heating hole communicating with the heating regulating cavity and the outside is provided on the side wall of the heat medium cavity. The heating channel includes the heating regulating cavity and the heating hole.

[0010] In one embodiment, the refrigerant housing forms a refrigerant cavity, and the two ends of the refrigerant valve core abut against two sidewalls of the refrigerant cavity, so that the refrigerant valve core divides the refrigerant cavity into a first cooling regulating cavity and a second cooling regulating cavity that are independent of each other. The refrigerant housing has a first cooling hole and a second cooling hole. The first cooling channel includes the first cooling hole and the first cooling regulating cavity that are interconnected. The second cooling channel includes the second cooling hole and the second cooling regulating cavity that are interconnected.

[0011] In one embodiment, a plurality of input holes are formed on one side wall of the refrigerant chamber. The plurality of input holes are spaced apart along the sliding direction of the refrigerant valve core and communicate with each other in the refrigerant chamber. When the refrigerant valve core slides, the number of input holes connected to the first cooling regulating chamber and the second cooling regulating chamber changes in opposite ways.

[0012] In one embodiment, the refrigerant mechanism further includes a buffer shell that forms a buffer cavity that communicates with all of the input ports.

[0013] In one embodiment, a fresh air valve is also included. The fresh air valve has an independent thermal connection chamber, a first cold connection chamber, and a second cold connection chamber. The thermal connection chamber is connected to the heating channel, the first cold connection chamber is connected to the first cooling channel, and the second cold connection chamber is connected to the second cooling channel. When the liquid pressure in the thermal connection chamber, the first cold connection chamber, and the second cold connection chamber is all less than a set value, the fresh air valve is opened to allow fresh air from the outside.

[0014] In one embodiment, the fresh air valve includes a valve plate and an elastic element, the elastic element abutting against the valve plate, the hot connection cavity, the first cold connection cavity, and the second cold connection cavity, and the elastic element are located on opposite sides of the valve plate, when the liquid pressure in the hot connection cavity, the first cold connection cavity, and the second cold connection cavity is all less than a set value, the elastic element pushes the valve plate to move to open the fresh air valve.

[0015] In one embodiment, the volumes of the thermal communication cavity, the first cold communication cavity, and the second cold communication cavity are equal.

[0016] In one embodiment, the heat transfer valve core is slidably connected to the connecting rod, and the refrigerant valve core is fixedly connected to the connecting rod.

[0017] In one embodiment, a PLC controller is also included, which controls the movement of the linkage and is also used to control the set values ​​of temperature and humidity of the air conditioning system.

[0018] One technical effect of an embodiment of this application is that, given that the control valve device is applied to an air conditioning system, allowing refrigerant to be input into the cooling surface cooling unit via the first cooling channel and into the dehumidifying surface cooling unit via the second cooling channel, the flow rate of the refrigerant input into the cooling and dehumidifying surface cooling units can be changed by adjusting the volumes of the first and second cooling channels. For example, when the volume of the first cooling channel decreases, the refrigerant flow rate input into the cooling surface cooling unit decreases, and the cooling capacity of the cooling surface cooling unit decreases reasonably. Compared to the temperature of the air after cooling and dehumidification by a conventional surface cooler, the temperature of the air passing through the cooling surface cooling unit increases significantly. Simultaneously, although the refrigerant flow rate input into the cooling surface cooling unit increases, the temperature decrease of the air passing through the dehumidifying surface cooling unit is relatively small due to the limitation of the chilled water temperature and the large latent heat of air dehumidification, resulting in a high consumption of cooling capacity. In summary, this can increase the temperature of the air after cooling and dehumidification, reduce or even eliminate the reheating of the air by the heating unit through the heat medium, thereby reducing or eliminating the consumption of the heat medium, that is, reducing the energy consumption of the heating unit, and ultimately reducing the energy consumption of the entire air conditioning system. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the planar structure of an air conditioning system provided in one embodiment.

[0020] Figure 2 for Figure 1 The diagram shows a planar structural schematic of the control valve device in the air conditioning system.

[0021] Figure 3 for Figure 1 The diagram shows the temperature curves during the temperature control process of the air conditioning system.

[0022] Reference numerals: Air conditioning system 10, control valve device 20, heating unit 31, cooling surface cooling unit 32, dehumidifying surface cooling unit 33, heat medium supply main pipe 34, refrigerant supply main pipe 35, heat medium conveying pipe 36, first refrigerant conveying pipe 37, second refrigerant conveying pipe 38, control valve 100, connecting rod 130, heat medium valve core 110, refrigerant valve core 120, heat medium mechanism 200, heat medium shell 210, shell body 211, heat medium cavity 2111, heating hole 2112, support member 212, heating regulating cavity 2 13. Heating channel 201, refrigerant mechanism 300, refrigerant shell 310, refrigerant chamber 311, first cooling regulating chamber 312, second cooling regulating chamber 313, first cooling hole 314, second cooling hole 315, input hole 316, buffer shell 320, buffer chamber 321, first cooling channel 301, second cooling channel 302, fresh air valve 400, hot connection chamber 410, first cold connection chamber 420, second cold connection chamber 430, valve plate 440, elastic element 450, PLC controller 500. Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0024] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0025] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0028] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0029] See Figure 1 and Figure 2In one embodiment of this application, a control valve device 20 is provided for use in an air conditioning system 10. The air conditioning system 10 includes the control valve device 20, a cooling surface cooling unit 32, a dehumidifying surface cooling unit 33, a heat medium supply main pipe 34, a refrigerant supply main pipe 35, a heat medium delivery pipe 36, a first refrigerant delivery pipe 37, and a second refrigerant delivery pipe 38. Both the heat medium supply main pipe 34 and the heat medium delivery pipe 36 are connected to the control valve device 20. The heat medium supply main pipe 34 supplies heat medium to the control valve device 20, and then the heat medium supply main pipe 34 delivers the heat medium to the heating unit 31 through the heat medium delivery pipe 36. The heating unit 31 can heat the air, preventing the air temperature input to the workplace from being too low. The refrigerant supply main pipe 35, the first refrigerant delivery pipe 37, and the second refrigerant delivery pipe 38 are all connected to the control valve device 20. The refrigerant supply main pipe 35 supplies refrigerant to the control valve device 20. Then, the control valve device 20 supplies a portion of the refrigerant through the first refrigerant delivery pipe 37 to the cooling surface cooling unit 32, and another portion through the second refrigerant delivery pipe 38 to the dehumidifying surface cooling unit 33. When air passes over the surface of the cooling surface cooling unit 32, heat exchange occurs between the air and the refrigerant, causing the refrigerant to absorb heat from the air, thus cooling the air. When air passes over the surface of the dehumidifying surface cooling unit 33, heat exchange occurs between the air and the refrigerant, causing the refrigerant to absorb heat from the air, liquefying water vapor in the air and reducing the moisture content of the air, thus dehumidifying the air. It is understandable that both the cooling surface cooling unit 32 and the dehumidifying surface cooling unit 33 have the functions of cooling and dehumidifying. However, the main function of the cooling surface cooling unit 32 is cooling, while the main function of the dehumidifying surface cooling unit 33 is dehumidifying.

[0030] Therefore, after the air passes through the dehumidification surface cooling unit 33 and the cooling surface cooling unit 32, the air temperature and humidity decrease. When the air temperature is lower than the set value, the heating unit 31 can reheat the air. That is, the heat medium in the heating unit 31 exchanges heat with the air, so that the air absorbs the heat of the heat medium and rises in temperature, so that the temperature and humidity of the air input to the workplace meet the set requirements.

[0031] See Figure 1 and Figure 2 In some embodiments, the control valve device 20 includes a control valve 100, a heat transfer medium mechanism 200, and a refrigerant mechanism 300. The control valve 100 includes a heat transfer medium valve core 110, a refrigerant valve core 120, and a connecting rod 130, wherein both the heat transfer medium valve core 110 and the refrigerant valve core 120 are connected to the connecting rod 130.

[0032] The heating medium mechanism 200 includes a heating medium shell 210, a connecting rod 130 slidably passing through the heating medium shell 210, and a heating medium valve core 110 slidably disposed within the heating medium shell 210. The heating medium valve core 110 and the heating medium shell 210 can form a heating channel 201. When the connecting rod 130 slides relative to the heating medium shell 210 along its own axial direction, the connecting rod 130 will drive the heating medium valve core 110 to slide within the heating medium shell 210, thereby changing the volume of the heating channel 201, i.e., the volume of the heating channel 201 can be adjusted. The refrigerant mechanism 300 includes a refrigerant shell 310, a connecting rod 130 slidably passing through the refrigerant shell 310, and a refrigerant valve core 120 slidably disposed within the refrigerant shell 310. The refrigerant valve core 120 and the refrigerant shell 310 can form a first cooling channel 301 and a second cooling channel 302. When the connecting rod 130 slides relative to the refrigerant housing 310 along its own axis, the connecting rod 130 will drive the refrigerant valve core 120 to slide in the refrigerant housing 310, thereby changing the volume of the first cooling channel 301 and the second cooling channel 302, that is, the volume of the first cooling channel 301 and the second cooling channel 302 can be adjusted.

[0033] See Figure 1 and Figure 2 When the volume of the heating channel 201 changes, the volume changes of the first cooling channel 301 and the second cooling channel 302 follow opposite patterns. For example, when the volume of the first cooling channel 301 increases, the volume of the second cooling channel 302 decreases; conversely, when the volume of the first cooling channel 301 decreases, the volume of the second cooling channel 302 increases. The lumen of the heat transfer pipe 36 is connected to the heating channel 201, allowing the heat transfer medium in the heating channel 201 to be input to the heating unit 31 through the heat transfer pipe 36. The lumen of the first refrigerant transfer pipe 37 is connected to the first cooling channel 301, allowing the refrigerant in the first cooling channel 301 to be input to the cooling surface cooling unit 32 through the first refrigerant transfer pipe 37. The lumen of the second refrigerant transfer pipe 38 is connected to the second cooling channel 302, allowing the refrigerant in the second cooling channel 302 to be input to the dehumidifying surface cooling unit 33 through the second refrigerant transfer pipe 38. Therefore, when the volume of the first cooling channel 301 and the second cooling channel 302 changes, the flow rate of the refrigerant input to the cooling surface cooling unit 32 and the dehumidifying surface cooling unit 33 can be changed, so that the flow rates of the refrigerant in the cooling surface cooling unit 32 and the dehumidifying surface cooling unit 33 are not equal.

[0034] If the refrigerant flow rate in the cooling surface cooling unit 32 and the dehumidifying surface cooling unit 33 is not adjustable, the air temperature will be relatively low after the air passes through the cooling surface cooling unit 32 and the dehumidifying surface cooling unit 33 for cooling and dehumidification. In this case, the heating unit 31 needs to heat the air significantly to make the air temperature meet the set requirements. This will cause the heating unit 31 to consume more heat transfer medium, thereby increasing the energy consumption of the heating unit 31 and ultimately increasing the energy consumption of the entire air conditioning system 10.

[0035] See Figure 1 and Figure 2 Regarding the air conditioning system 10 in the above embodiments, given that the air conditioning system 10 employs a control valve device 20, the flow rate of refrigerant input to the cooling surface cooling unit 32 and the dehumidifying surface cooling unit 33 can be changed by adjusting the volume of the first cooling channel 301 and the second cooling channel 302. For example, when the volume of the first cooling channel 301 decreases, the flow rate of refrigerant input to the cooling surface cooling unit 32 decreases, and the cooling capacity of the cooling surface cooling unit 32 is reasonably reduced, resulting in a relatively high temperature of the air passing through the cooling surface cooling unit 32. Consequently, the air temperature becomes equal to or slightly lower than the set temperature, thus reducing or even eliminating the reheating of the air by the heating unit 31, thereby reducing or eliminating the consumption of heat transfer medium, i.e., reducing the energy consumption of the heating unit 31, and ultimately reducing the energy consumption of the entire air conditioning system 10.

[0036] It is understandable that when the volume of the first cooling channel 301 decreases, the volume of the second cooling channel 302 increases. Therefore, the refrigerant flow rate to the cooling surface cooling unit 32 decreases, while the refrigerant flow rate to the dehumidifying surface cooling unit 33 increases. Consequently, the dehumidification effect of the cooling surface cooling unit 32 decreases, but the increased refrigerant flow rate of the dehumidifying surface cooling unit 33 enhances its dehumidification effect. Thus, the dehumidifying surface cooling unit 33 can reasonably compensate for the weakened dehumidification capacity of the cooling surface cooling unit 32, ultimately ensuring that the air humidity meets the set requirements. Simultaneously, although the refrigerant flow rate to the cooling surface cooling unit 33 increases, the temperature reduction of the air passing through the dehumidifying surface cooling unit 33 is relatively small due to the limitation of the chilled water temperature and the high latent heat of air dehumidification, resulting in greater cooling energy consumption. In summary, this can increase the air temperature after cooling and dehumidification, reduce or even eliminate the reheating of the air by the heating unit 31 through the heat medium, thereby reducing or eliminating the consumption of the heat medium, that is, reducing the energy consumption of the heating unit 31, and ultimately reducing the energy consumption of the entire air conditioning system 10.

[0037] See Figure 1 and Figure 2In some embodiments, the heat transfer medium shell 210 includes a shell body 211 and a support member 212. The shell body 211 surrounds a heat transfer medium cavity 2111. The support member 212 protrudes from the bottom wall of the heat transfer medium cavity 2111, such that the support member 212 protrudes a certain height relative to the bottom wall. However, the top of the support member 212 is spaced apart from the top wall of the heat transfer medium cavity 2111, so that the support member 212 does not extend to the top wall of the heat transfer medium cavity 2111. The heat transfer medium valve core 110 abuts against the side wall of the heat transfer medium cavity 2111, and the heat transfer medium valve core 110 can be supported on the top of the support member 212. A heating regulating cavity 213 is formed between the heat transfer medium valve core 110, the shell body 211, and the support member 212. It can be understood that the heating regulating cavity 213 is part of the heat transfer medium cavity 2111. When the distance between the heat transfer valve core 110 and the support member 212 changes, the size of the opening of the heating regulating chamber 213 between the heat transfer valve core 110 and the support member 212 changes, thus changing the volume of the heating regulating chamber 213. For example, when the heat transfer valve core 110 is in contact with the support member 212, the distance between them is zero. At this time, the volume of the heating regulating chamber 213 is at its minimum, and the width of the opening between the heat transfer valve core 110 and the support member 212 is zero. When the heat transfer valve core 110 moves away from the support member 212, the distance between them increases. At this time, the volume of the heating regulating chamber 213 increases, and the width of the opening between the heat transfer valve core 110 and the support member 212 also increases. Obviously, when the heat medium valve core 110 moves close to the support member 212, the distance between the heat medium valve core 110 and the support member 212 decreases. At this time, the volume of the heating regulating cavity 213 decreases, and the width of the opening of the heating regulating cavity 213 between the heat medium valve core 110 and the support member 212 decreases.

[0038] See Figure 1 and Figure 2 A heating hole 2112 is provided on the side wall of the heat medium cavity 2111, penetrating the shell body 211 and connecting it to the outside and the heating regulating cavity 213. The heating channel 201 includes the heating regulating cavity 213 and the heating hole 2112. A heat medium conveying pipe 36 is disposed at the heating hole 2112, making the heating hole 2112 and the lumen of the heat medium conveying pipe 36 interconnected. Therefore, when the volume of the heating regulating cavity 213 increases, the volume of the heating channel 201 increases, and the flow rate of the heat medium delivered to the heating unit 31 through the heat medium conveying pipe 36 increases; when the volume of the heating regulating cavity 213 decreases, the volume of the heating channel 201 decreases, and the flow rate of the heat medium delivered to the heating unit 31 through the heat medium conveying pipe 36 decreases.

[0039] The heat medium supply main pipe 34 is connected to the shell body 211, so that the heat medium in the heat medium supply main pipe 34 enters the heat medium cavity 2111, then enters the heating regulation cavity 213, and finally is transported from the heating hole 2112 to the heating unit 31 through the heat medium delivery pipe 36.

[0040] See Figure 1 and Figure 2 In some embodiments, the refrigerant housing 310 forms a refrigerant cavity 311. The two ends of the refrigerant valve core 120 abut against two opposite sidewalls of the refrigerant cavity 311, thus dividing the refrigerant cavity 311 into two independent chambers, designated as a first cooling regulating chamber 312 and a second cooling regulating chamber 313. The first cooling regulating chamber 312 and the second cooling regulating chamber 313 are arranged along the sliding direction of the refrigerant valve core 120. The refrigerant housing 310 also has a first cooling hole 314 and a second cooling hole 315, which penetrate the refrigerant housing 310. The first cooling hole 314 connects the first cooling regulating chamber 312 to the outside, and the second cooling hole 315 connects the second cooling regulating chamber 313 to the outside. The first cooling channel 301 includes a first cooling hole 314 and a first cooling regulating chamber 312, and the second cooling channel 302 includes a second cooling hole 315 and a second cooling regulating chamber 313. A first refrigerant delivery pipe 37 is disposed at the first cooling hole 314, such that the lumen of the first refrigerant delivery pipe 37 is interconnected with the first cooling hole 314, thereby allowing the first cooling channel 301 to supply refrigerant to the cooling surface cooling unit 32 through the first refrigerant delivery pipe 37. A second refrigerant delivery pipe 38 is disposed at the second cooling hole 315, such that the lumen of the second refrigerant delivery pipe 38 is interconnected with the second cooling hole 315, thereby allowing the second cooling channel 302 to supply refrigerant to the dehumidifying surface cooling unit 33 through the second refrigerant delivery pipe 38.

[0041] Since the refrigerant valve core 120 divides the refrigerant chamber 311 into a first cooling regulating chamber 312 and a second cooling regulating chamber 313, when the volume of the first cooling regulating chamber 312 increases, the volume of the second cooling regulating chamber 313 decreases. This results in an increase in the flow rate of refrigerant supplied from the first cooling channel 301 to the cooling surface cooling unit 32, while the flow rate of refrigerant supplied from the second cooling channel 302 to the dehumidifying surface cooling unit 33 decreases. Conversely, when the volume of the first cooling regulating chamber 312 decreases, the volume of the second cooling regulating chamber 313 increases. This again results in a decrease in the flow rate of refrigerant supplied from the first cooling channel 301 to the cooling surface cooling unit 32, while the flow rate of refrigerant supplied from the second cooling channel 302 to the dehumidifying surface cooling unit 33 increases.

[0042] See Figure 1 and Figure 2During operation, when the connecting rod 130 moves upward, the heat transfer valve core 110 moves away from the support member 212, increasing the volume of the heating regulating chamber 213 and the entire heating channel 201. This increases the heat transfer flow rate of the heating unit 31, thereby improving heating performance. Simultaneously, the upward-moving connecting rod 130 drives the refrigerant valve core 120 upward, reducing the volume of the first cooling regulating chamber 312 and the entire first cooling channel 301. This reduces the refrigerant flow rate input to the cooling surface cooling unit 32, thus lowering the cooling energy of the cooling surface cooling unit 32. Consequently, the air temperature flowing through the cooling surface cooling unit 32 is higher, which can reduce or even eliminate the heating of the air by the heating unit 31, thereby reducing energy consumption.

[0043] See Figure 1 and Figure 2 In some embodiments, the heat transfer valve core 110 is slidably connected to the connecting rod 130, and the refrigerant valve core 120 is fixedly connected to the connecting rod 130. When the connecting rod 130 slides upward, reducing the cooling energy of the cooling surface cooling unit 32, the air temperature output from the cooling surface cooling unit 32 increases. At this time, the connecting rod 130 can remain stationary, allowing the heat transfer valve core 110 to gradually slide downward relative to the connecting rod 130, thereby reducing the amount of heat transfer fluid supplied by the heating channel 201 to the heating unit 31, thus reducing energy consumption. Alternatively, the heat transfer valve core 110 can be directly made to contact the support member 212, so that the width of the opening between the heat transfer valve core 110 and the support member 212 in the heating regulating chamber 213 is zero, thus stopping the heat transfer fluid supply from the heating channel 201 to the heating unit 31, thereby further reducing energy consumption.

[0044] See Figure 1 and Figure 2 In some embodiments, a plurality of input holes 316 are formed on one side wall of the refrigerant chamber 311. These input holes 316 are spaced apart along the sliding direction of the refrigerant valve core 120 and are interconnected with the refrigerant chamber 311. This also allows the first cooling regulating chamber 312 to communicate with some of the input holes 316, and the second cooling regulating chamber 313 to communicate with the remaining input holes 316. When the refrigerant valve core 120 slides, the number of input holes 316 connected to the first cooling regulating chamber 312 and the second cooling regulating chamber 313 changes in opposite patterns. For example, when the refrigerant valve core 120 slides upward and the volume of the first cooling regulating chamber 312 decreases, the number of input holes 316 connected to the first cooling regulating chamber 312 decreases, while the number of input holes 316 connected to the second cooling regulating chamber 313 increases; conversely, when the refrigerant valve core 120 slides downward and the volume of the first cooling regulating chamber 312 increases, the number of input holes 316 connected to the first cooling regulating chamber 312 increases, while the number of input holes 316 connected to the second cooling regulating chamber 313 decreases.

[0045] In some embodiments, the refrigerant mechanism 300 further includes a buffer shell 320 connected to the refrigerant shell 310, forming a buffer cavity 321. The buffer cavity 321 is connected to all the inlet ports 316. The refrigerant supply manifold 35 is connected to the buffer shell 320, allowing the refrigerant in the refrigerant supply manifold 35 to enter the buffer cavity 321, and then enter the first cooling regulating cavity 312 and the second cooling regulating cavity 313 through different inlet ports 316. This facilitates the smooth entry of refrigerant into the first cooling regulating cavity 312 and the second cooling regulating cavity 313.

[0046] See Figure 1 and Figure 2 In some embodiments, the control valve device 20 further includes a fresh air valve 400, which has a hot connection chamber 410, a first cold connection chamber 420, and a second cold connection chamber 430. The hot connection chamber 410, the first cold connection chamber 420, and the second cold connection chamber 430 are independent of each other. The volumes of the hot connection chamber 410, the first cold connection chamber 420, and the second cold connection chamber 430 can be equal. The hot connection chamber 410 is connected to the heating port 2112 of the heating channel 201, the first cold connection chamber 420 is connected to the first cooling port 314 of the first cooling channel 301, and the second cold connection chamber 430 is connected to the second cooling port 315 of the second cooling channel 302. When the liquid pressure in the hot connection chamber 410, the first cold connection chamber 420, and the second cold connection chamber 430 is all less than a set value, the fresh air valve 400 opens to allow fresh air from the outside. This allows fresh air to be introduced into the workplace through the heating unit 31, the dehumidifying cooling unit 33, and the cooling cooling unit 32, thereby improving the air quality in the workplace.

[0047] See Figure 1 and Figure 2 In some embodiments, the fresh air valve 400 includes a valve plate 440 and an elastic element 450. The elastic element 450 abuts against the valve plate 440. The hot connection cavity 410, the first cold connection cavity 420, and the second cold connection cavity 430, along with the elastic element 450, are located on opposite sides of the valve plate 440. When the liquid pressure in the hot connection cavity 410, the first cold connection cavity 420, and the second cold connection cavity 430 is less than a set value, the elastic element 450 pushes the valve plate 440 to open the fresh air valve 400. In fact, the fresh air valve 400 is normally closed under the action of liquid pressure. When the liquid pressure in the hot connection cavity 410, the first cold connection cavity 420, and the second cold connection cavity 430 is less than the set value, the elastic element 450 will overcome the liquid pressure and push the valve plate 440 to open, thereby realizing the opening of the fresh air valve 400.

[0048] It is understandable that a higher pressure in the first cold connection cavity 420 indicates a larger refrigerant flow rate from the first cooling channel 301 to the cooling surface cooling unit 32, resulting in higher energy consumption. Conversely, a lower pressure in the first cold connection cavity 420 indicates lower energy consumption. Similarly, a higher pressure in the second cold connection cavity 430 indicates a larger refrigerant flow rate from the second cooling channel 302 to the dehumidifying surface cooling unit 33, resulting in higher energy consumption. Conversely, a lower pressure in the second cold connection cavity 430 indicates lower energy consumption. Therefore, when energy consumption is high, the temperature and humidity setpoints of the air conditioning system 10 can be increased to reduce the energy consumption of the air conditioning system 10.

[0049] In some embodiments, the control valve device 20 further includes a PLC controller 500, which controls the movement of the linkage 130 to control the flow rates of the heat medium and the refrigerant. The PLC controller 500 can also be used to control the setpoints of the temperature and humidity of the air conditioning system 10.

[0050] See Figure 3 It can be understood that the process requirement for air conditioning system 10 is a temperature of 24±2℃, and the air conditioner's temperature setpoint is 24℃, allowing a temperature deviation of ±2℃. Therefore, the allowable temperature range is 22℃-26℃. The process requirement for air conditioning system 10 is a humidity of 60±10%, meaning the air conditioner allows a humidity deviation of ±10%, and the allowable humidity range is 50%-70%. Since the actual control precision of air conditioners is usually high, for example, a temperature control precision of ±1℃ and a humidity control precision of ±7%, within the allowable temperature range of 22℃-26℃, the air conditioner's temperature setpoint can be 23℃-25℃. Within the allowable humidity range of 50%-70%, the air conditioner's humidity setpoint can be 53%-67%. Based on this, a rectangular coordinate system of enthalpy-humidity diagram can be established, with point A (26℃, 50%), point B (26℃, 70%), point C (22℃, 70%), and point D (22℃, 50%). The area between A and B is a straight line, the area between B and C is a 70% humidity curve, the area between C and D is a straight line, and the area between D and A is a 50% humidity curve. This area represents the permissible temperature and humidity range for the air conditioning system. Subtracting the air conditioning's precision settings, the permissible temperature and humidity setpoints are: a straight line at 25°C between A and B, a 67% humidity curve between B and C, a straight line at 23°C between C and D, and a 53% humidity curve between D and A. The area formed by these four lines represents the permissible temperature and humidity range for the air conditioning system. By collecting the temperature and humidity values ​​at points on B, C, and D, and inputting them into the PLC controller 500, the PLC controller 500 can automatically and dynamically adjust the temperature and humidity values ​​of the air conditioning system 10.

[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A control valve device, applied in an air conditioning system, characterized in that, The control valve device includes: A control valve includes a connecting rod, a heat medium valve core, and a refrigerant valve core, wherein the heat medium valve core and the refrigerant valve core are both connected to the connecting rod; A heat transfer mechanism includes a heat transfer housing, a connecting rod that slides through the heat transfer housing, and a heat transfer valve core that slides within the heat transfer housing to form a heating channel with an adjustable volume. The refrigerant mechanism includes a refrigerant housing, a connecting rod that slides through the refrigerant housing, and a refrigerant valve core that slides within the refrigerant housing to form an adjustable first and second cooling channel. When the volume of the heating channel can change, the volume changes of the first cooling channel and the second cooling channel follow opposite patterns.

2. The control valve device according to claim 1, characterized in that, The heat transfer medium shell includes a shell body and a support member. The shell body forms a heat transfer medium cavity. The support member protrudes from the bottom wall of the heat transfer medium cavity and is spaced apart from the top wall of the heat transfer medium cavity. The heat transfer medium valve core abuts against the side wall of the heat transfer medium cavity and can be supported on the support member. A heating regulating cavity is formed between the heat transfer medium valve core, the shell body, and the support member. When the distance between the heat transfer medium valve core and the support member changes, the size of the opening of the heating regulating cavity between the heat transfer medium valve core and the support member changes. A heating hole communicating with the heating regulating cavity and the outside is opened on the side wall of the heat transfer medium cavity. The heating channel includes the heating regulating cavity and the heating hole.

3. The control valve device according to claim 1, characterized in that, The refrigerant housing forms a refrigerant cavity, and the two ends of the refrigerant valve core abut against two opposite side walls of the refrigerant cavity, so that the refrigerant valve core divides the refrigerant cavity into a first cooling regulating cavity and a second cooling regulating cavity that are independent of each other. The refrigerant housing has a first cooling hole and a second cooling hole. The first cooling channel includes the first cooling hole and the first cooling regulating cavity that are interconnected. The second cooling channel includes the second cooling hole and the second cooling regulating cavity that are interconnected.

4. The control valve device according to claim 3, characterized in that, Multiple input holes are formed on one side wall of the refrigerant chamber. The multiple input holes are spaced apart along the sliding direction of the refrigerant valve core and are interconnected with the refrigerant chamber. When the refrigerant valve core slides, the number of input holes connected to the first and second cooling regulating chambers changes in opposite ways.

5. The control valve device according to claim 4, characterized in that, The refrigerant mechanism also includes a buffer shell, which forms a buffer cavity, and the buffer cavity is in communication with all the input ports.

6. The control valve device according to claim 1, characterized in that, It also includes a fresh air valve, which has an independent hot connection chamber, a first cold connection chamber and a second cold connection chamber. The hot connection chamber is connected to the heating channel, the first cold connection chamber is connected to the first cooling channel, and the second cold connection chamber is connected to the second cooling channel. When the liquid pressure in the hot connection chamber, the first cold connection chamber and the second cold connection chamber is less than a set value, the fresh air valve opens to allow fresh air from the outside.

7. The control valve device according to claim 6, characterized in that, The fresh air valve includes a valve plate and an elastic element. The elastic element abuts against the valve plate. The hot connection cavity, the first cold connection cavity, and the second cold connection cavity, along with the elastic element, are located on opposite sides of the valve plate. When the liquid pressure in the hot connection cavity, the first cold connection cavity, and the second cold connection cavity is all less than a set value, the elastic element pushes the valve plate to open the fresh air valve.

8. The control valve device according to claim 6, characterized in that, The hot communication cavity, the first cold communication cavity, and the second cold communication cavity have the same volume.

9. The control valve device according to claim 1, characterized in that, The heat transfer valve core is slidably connected to the connecting rod, and the refrigerant valve core is fixedly connected to the connecting rod.

10. The control valve device according to claim 1, characterized in that, It also includes a PLC controller, which controls the movement of the linkage and is also used to control the set values ​​of temperature and humidity of the air conditioning system.

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