Five-constant air conditioning system

Abstract

The utility model relates to the technical field of air conditioners, and discloses a five-constancy air conditioning system which comprises a heat pump main unit, a heat pump main unit and a heat pump main unit. The fresh air module is communicated with the heat pump host through a water outlet pipeline; the fan coil communicates with the fresh air module through a first pipeline, and the radiation tail end communicates with the fan coil through a second pipeline and communicates with the heat pump main machine through a water return pipeline, so that cold water flowing out of the heat pump main machine sequentially flows through the fresh air module, the fan coil and the radiation tail end. The arrangement of a water mixing center can be canceled, the requirement of the water mixing center is reduced, and the complexity of the system is reduced. In addition, due to the fact that the water mixing link is omitted, water supply and return water of the heat pump do not need to be mixed in the system, energy waste can be avoided, and the energy utilization rate of the whole five-constant air conditioning system is increased.

Description

Technical Field

[0001] The present application relates to the technical field of five-constant air conditioning, for example, to a five-constant air conditioning system. Background Art

[0002] At present, Wuheng air conditioners mostly use radiation terminals to cool the indoor environment. However, when the radiation terminal is cooling, when the water temperature in the radiation terminal is lower than the indoor dew point temperature, it will cause condensation on the surface of the radiation terminal, reducing the service life of the radiation terminal or causing problems such as dripping from the air outlet or ceiling.

[0003] The five-constant air-conditioning system in the related technology mostly adopts a mixed water method when providing terminal radiation cooling, that is, mixing the heat pump supply water with a part of the terminal return water to make the water temperature higher than the dew point temperature of the controlled room air to avoid condensation on the radiation surface.

[0004] During the implementation of the embodiments of the present disclosure, it was found that at least the following problems exist in the related art:

[0005] The five-constant air conditioning cooling method in the related technology, on the one hand, adds a water mixing center, increases the initial investment of the system, and makes the system control more complicated; on the other hand, the mixing of return water and supply water causes waste of water supply energy, which greatly reduces the energy utilization rate of the five-constant system.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Utility Model Content

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The disclosed embodiment provides a five-constant air-conditioning system to solve the problem of complex system and low energy utilization caused by the need to use a mixing center in the existing five-constant air-conditioning system.

[0009] An embodiment of the first aspect of the present application provides a five-constant air-conditioning system, which includes: a heat pump main unit, a fresh air module, a fan coil unit and a radiation terminal. The fresh air module is connected to the heat pump main unit through a water outlet pipe; the fan coil unit is connected to the fresh air module through a first pipe, the radiation terminal is connected to the fan coil unit through a second pipe, and the radiation terminal is connected to the heat pump main unit through a return pipe, so that the cold water flowing out of the heat pump main unit flows through the fresh air module, the fan coil unit and the radiation terminal in sequence.

[0010] In some optional embodiments, the five-constant air conditioning system further includes:

[0011] The third pipeline has one end connected to the water outlet pipeline and the other end connected to the fan coil unit;

[0012] The first valve is provided in the third pipeline and is used to control the connection or disconnection of the third pipeline.

[0013] In some optional embodiments, the radiating tip includes:

[0014] a water distributor, one end of which is connected to the second pipeline;

[0015] A water collector, one end of which is connected to the other end of the water distributor, and the other end of which is connected to the return water pipeline;

[0016] The ground coil is located between the water distributor and the water collector and is connected to both the water distributor and the water collector;

[0017] The top radiation plate is arranged between the water distributor and the water collector, and is connected to both the water distributor and the water collector.

[0018] In some optional embodiments, the five-constant air conditioning system further includes:

[0019] a first bypass pipeline, one end of which is connected to the first pipeline and the other end of which is connected to the second pipeline;

[0020] The second valve is provided in the first bypass pipeline and is used to control the connection or disconnection of the first bypass pipeline.

[0021] In some optional embodiments, the five-constant air conditioning system further includes:

[0022] a fourth pipeline, one end of which is connected to the water outlet pipeline and the other end of which is connected to the radiation terminal;

[0023] The third valve is provided in the fourth pipeline and is used to control the connection or disconnection of the fourth pipeline.

[0024] In some optional embodiments, the five-constant air conditioning system further includes:

[0025] The second bypass pipeline has one end connected to the second pipeline and the other end connected to the return pipeline.

[0026] The fourth valve is provided in the second bypass pipeline and is used to control the connection or disconnection of the second bypass pipeline.

[0027] In some optional embodiments, the five-constant air-conditioning system further includes: a fifth valve, provided in the water outlet pipe, for controlling the connection or disconnection between the water outlet pipe and the fresh air module.

[0028] In some optional embodiments, the five-constant air-conditioning system further includes: a sixth valve, provided in the first pipeline, for controlling the connection or disconnection between the fresh air module and the fan coil unit.

[0029] In some optional embodiments, the five-constant air-conditioning system further includes: a seventh valve, provided in the second pipeline, for controlling the connection or disconnection between the fan coil unit and the radiation terminal.

[0030] In some optional embodiments, the five-constant air conditioning system further includes:

[0031] A detection device for detecting indoor dew point temperature;

[0032] The controller is electrically connected to the detection device, the first valve, the second valve, the third valve and the fourth valve. The controller is configured to control the opening and closing of the first valve, the second valve, the third valve and the fourth valve according to the indoor dew point temperature detected by the detection device.

[0033] The five-constant air conditioning system provided by the embodiments of the present disclosure can achieve the following technical effects:

[0034] By connecting the heat pump unit, fresh air module, fan coil unit, and radiant terminal in series, the chilled water flowing out of the heat pump unit is first directly supplied to the fresh air module. The module's dehumidification function reduces the indoor air humidity while simultaneously raising the temperature of the chilled water within the pipeline. The chilled water then flows through the fan coil unit, lowering the indoor air temperature while simultaneously raising the chilled water temperature within the pipeline, bringing it above the dew point. The chilled water then flows to the radiant terminal, preventing condensation on the radiant terminal surface. This eliminates the need for a mixing center, reducing the need for such a center and reducing system complexity. Furthermore, the elimination of the mixing step eliminates the need to mix heat pump supply and return water, thus avoiding energy waste and improving the energy efficiency of the entire five-constant air conditioning system. Furthermore, the series connection provides a more stable water flow, reducing temperature fluctuations caused by mixing, and improving the stability and reliability of the cooling system. Furthermore, the lack of a mixing center makes the five-constant air conditioning system more compact, saving installation space, particularly in space-constrained buildings, especially small apartments.

[0035] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0037] Figure 1 Schematic diagram of a five-constant air conditioning system provided by an embodiment of the present disclosure;

[0038] Figure 2is a structural diagram of another five-constant air conditioning system provided by an embodiment of the present disclosure;

[0039] Figure 3 is a structural diagram of another five-constant air conditioning system provided by an embodiment of the present disclosure;

[0040] Figure 4 It is a structural diagram of another five-constant air-conditioning system provided in an embodiment of the present disclosure.

[0041] Reference numerals:

[0042] 10: Heat pump host,

[0043] 20: Fresh air module,

[0044] 30: Fan coil unit,

[0045] 40: Radiation terminal, 41: Water distributor, 42: Water collector,

[0046] 51: Outlet pipe, 52: First pipe, 53: Second pipe, 54: Third pipe, 55: Fourth pipe, 56: Return pipe, 57: First bypass pipe, 58: Second bypass pipe,

[0047] 61: first valve, 62: second valve, 63: third valve, 64: fourth valve, 65: fifth valve, 66: sixth valve, 67: seventh valve. DETAILED DESCRIPTION

[0048] 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 is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0049] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that such terms are interchangeable where appropriate to describe the embodiments of the present disclosure. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0050] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. 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.

[0051] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0052] Unless otherwise stated, the term "plurality" means two or more.

[0053] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0054] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0055] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0056] Combine Figures 1 to 4 As shown, the arrows in the figure indicate the flow direction in the pipeline. The embodiment of the present disclosure provides a five-constant air-conditioning system, which includes: a heat pump host 10, a fresh air module 20, a fan coil 30 and a radiation terminal 40. The fresh air module 20 is connected to the heat pump host 10 through a water outlet pipeline 51; the fan coil 30 is connected to the fresh air module 20 through a first pipeline 52, the radiation terminal 40 is connected to the fan coil 30 through a second pipeline 53, and the radiation terminal 40 is connected to the heat pump host 10 through a return water pipeline 56, so that the cold water flowing out of the heat pump host 10 flows through the fresh air module 20, the fan coil 30 and the radiation terminal 40 in sequence.

[0057] The five-constant air conditioning system using the disclosed embodiment, by connecting the heat pump main unit 10, the fresh air module 20, the fan coil unit 30, and the radiation terminal 40 in series, can allow the cold water flowing out of the heat pump main unit 10 to be directly supplied to the fresh air module 20 first. The dehumidification function of the fresh air module 20 is used to reduce the humidity of the indoor air while increasing the temperature of the cold water in the pipeline. The water then flows through the fan coil unit 30 to reduce the temperature of the indoor air while increasing the temperature of the cold water in the pipeline, so that the temperature of the cold water can be higher than the dew point temperature. The water then flows to the radiation terminal 40 to avoid condensation on the surface of the radiation terminal 40. The water mixing center can be eliminated, reducing the need for the water mixing center and reducing the complexity of the system. Moreover, since the water mixing link is eliminated, the system does not need to mix the heat pump supply water and return water, which can avoid energy waste and improve the energy utilization rate of the entire five-constant air conditioning system. In addition, by connecting in series, the water flow in the system is more stable, reducing the temperature fluctuations caused by water mixing, and improving the stability and reliability of the system's cooling. And because there is no need for a water mixing center, the Wuheng air conditioning system is more compact in design, which helps save installation space, especially when building space is limited, especially for small-sized user spaces.

[0058] Optionally, the five-constant air-conditioning system also includes: a third pipeline 54 and a first valve 61, one end of the third pipeline 54 is connected to the water outlet pipeline 51, and the other end of the third pipeline 54 is connected to the fan coil 30; the first valve 61 is arranged on the third pipeline 54, and the first valve 61 is used to control the connection or disconnection of the third pipeline 54.

[0059] The five-constant air conditioning system of the disclosed embodiment is configured with a third pipe 54, one end of which is connected to the water outlet pipe 51, and the other end of which is connected to the fan coil unit 30. This allows the cold water in the water outlet pipe 51 to flow directly from the water outlet pipe 51 along the third pipe 54 into the fan coil unit 30. By providing a first valve 61 on the third pipe 54, the first valve 61 can control whether the water flows directly through the fan coil unit 30, thereby flexibly adjusting the cooling capacity according to the needs of the indoor environment. The addition of the first valve 61 enables the system to adjust the cooling path according to actual needs, enhancing the system's adjustment capability and adaptability, and better meeting the cooling needs of different rooms or different time periods.

[0060] Optionally, the first valve 61 is a stop valve.

[0061] In this way, the stop valve has the characteristics of compact structure, good sealing, and can be used to accurately control the flow, so that the first valve 61 can accurately control the flow of the third pipeline 54.

[0062] Optionally, the first valve 61 is a regulating valve.

[0063] In this way, the regulating valve can accurately adjust the flow, can accurately control the flow of the third pipeline 54, and can provide stable flow control.

[0064] Optionally, the first valve 61 is a solenoid valve.

[0065] This allows the solenoid valve to open and close quickly and be remotely controlled via electrical signals, making it easy to integrate into automated control systems for centralized or intelligent control. Furthermore, the solenoid valve's precise opening and closing action allows for precise control of water flow and reduces system misoperation.

[0066] Optionally, the five-constant air-conditioning system also includes: a first bypass line 57 and a second valve 62, one end of the first bypass line 57 is connected to the first line 52, and the other end of the first bypass line 57 is connected to the second line 53; the second valve 62 is arranged on the first bypass line 57, and the second valve 62 is used to control the connection or disconnection of the first bypass line 57.

[0067] The five-constant air conditioning system of the embodiment of the present disclosure is adopted. By setting a first bypass line 57 and connecting one end of the first bypass line 57 to the first line 52, and connecting the other end of the first bypass line 57 to the second line 53, the water flow in the first line 52 can flow directly into the second line 53 without the need for cold water to flow through the fan coil unit 30. First, when the fan coil unit 30 is not needed for cooling, by opening the second valve 62, the water flow of the system can be reduced, thereby reducing the energy consumption of the water pump and further improving the energy efficiency of the entire system. Secondly, when the full cooling capacity is not needed indoors, the second valve 62 can be opened to allow the water flow to flow directly from the first line 52 to the second line 53 through the bypass line, bypassing the fan coil unit 30, reducing the energy consumption of the water pump and the water resistance of the system, thereby saving energy. In addition, in some cases, if the cooling capacity of the fan coil unit 30 is excessive, the cooling capacity of the fan coil unit 30 can be reduced by opening the second valve 62 to open the first bypass line 57, thereby avoiding excessive cooling of the indoor temperature and maintaining a comfortable indoor environment.

[0068] Optionally, the five-constant air-conditioning system also includes: a fourth pipeline 55 and a third valve 63, one end of the fourth pipeline 55 is connected to the water outlet pipeline 51, and the other end of the fourth pipeline 55 is connected to the radiation end 40; the third valve 63 is arranged on the fourth pipeline 55, and the third valve 63 is used to control the connection or disconnection of the fourth pipeline 55.

[0069] The five-constant air conditioning system of the disclosed embodiment provides a fourth pipe 55, connecting one end of the fourth pipe 55 to the water outlet pipe 51 and the other end of the fourth pipe 55 to the radiation terminal 40. This allows cold water in the water outlet pipe 51 to flow directly into the radiation terminal 40 along the fourth pipe 55. By providing a third valve 63 in the fourth pipe 55, the third valve 63 enables direct cooling control to the radiation terminal 40. When cooling is required for the radiation terminal 40 alone, the third valve 63 can be opened to allow cold water to flow directly to the radiation terminal 40, improving the directness and efficiency of cooling. Furthermore, the provision of the third valve 63 allows the system operator to independently adjust the cold water flow to the radiation terminal 40 based on the specific needs of the room, thereby precisely controlling the cooling capacity of the radiation terminal 40 and meeting the temperature requirements of different areas. Furthermore, by controlling the water flow in the fourth pipe 55, the third valve 63 can be promptly closed when the surface temperature of the radiation terminal 40 approaches the dew point, preventing condensation on the surface of the radiation terminal 40 and thus protecting the service life of the radiation terminal 40.

[0070] Optionally, the five-constant air-conditioning system also includes: a second bypass line 58 and a fourth valve 64, one end of the second bypass line 58 is connected to the second line 53, and the other end of the second bypass line 58 is connected to the return line 56; the fourth valve 64 is arranged on the second bypass line 58, and the fourth valve 64 is used to control the connection or disconnection of the second bypass line 58.

[0071] The five-constant air conditioning system of the disclosed embodiment provides a second bypass line 58, one end of which is connected to the second line 53, and the other end of which is connected to the return line 56. The second bypass line 58 allows the cold water in the second line 53 to flow into the return line 56. When the radiation terminal 40 is not required to operate, the water can be directly returned to the return line 56 through the second bypass line 58. By providing a fourth valve 64 in the second bypass line 58, the fourth valve 64 controls the second bypass line 58, thereby achieving bypass control of the cooling or heating supply to the radiation terminal 40. First, when the radiation terminal 40 does not need to provide cooling or heating, the fourth valve 64 is opened, allowing the water to flow directly back to the return line 56 through the second bypass line 58, reducing the inefficient power consumption of the water pump and thus saving energy. Secondly, in certain situations, if the cooling or heating supply of the radiation terminal 40 is excessive, the fourth valve 64 can be opened to allow some of the water to flow back through the second bypass line 58, thereby preventing the indoor temperature from being too cold or too hot. Furthermore, if maintenance or repair of the radiation terminal 40 is required, the fourth valve 64 can be opened to allow the water to bypass the radiation terminal 40, facilitating maintenance without affecting other parts of the system.

[0072] Optionally, the five-constant air conditioning system further includes: a fifth valve 65 , provided on the water outlet pipe 51 , for controlling the connection or disconnection between the water outlet pipe 51 and the fresh air module 20 .

[0073] The five-constant air-conditioning system of the disclosed embodiment is provided with a fifth valve 65 in the water outlet pipe 51. The provision of the fifth valve 65 allows the system operator to independently control the water flow of the fresh air module 20, and can decide whether to supply cooling or heating to the fresh air module 20 according to the indoor air quality requirements or outdoor climate conditions. When the fresh air module 20 is not needed to operate, by closing the fifth valve 65, the water flow and energy consumption of the system can be reduced, thereby saving energy. Secondly, when the fresh air module 20 is to be maintained or overhauled, the fifth valve 65 can be closed to isolate the fresh air module 20 without affecting the normal operation of other parts, thereby facilitating maintenance work. In addition, the fifth valve 65 can quickly cut off the water flow to the fresh air module 20 when a fault occurs, ensuring that other parts of the system can still operate normally, thereby improving the reliability of the system.

[0074] Optionally, the five-constant air conditioning system further includes: a sixth valve 66 , provided in the first pipeline 52 , for controlling the connection or disconnection between the fresh air module 20 and the fan coil 30 .

[0075] The five-constant air conditioning system of the disclosed embodiment, by installing a sixth valve 66 in the first pipeline 52, allows the system operator to independently control the water flow between the fresh air module 20 and the fan coil unit 30. This allows the system operator to control the connection or disconnection between the fresh air module 20 and the fan coil unit 30 based on indoor and outdoor environmental conditions and needs. When the fan coil unit 30 is not needed for cooling or heating, the sixth valve 66 can be closed to reduce the water flow in the system, thereby reducing the energy consumption of the water pump and achieving energy conservation.

[0076] Optionally, the five-constant air conditioning system further includes: a seventh valve 67 , provided in the second pipeline 53 , for controlling the connection or disconnection between the fan coil 30 and the radiation terminal 40 .

[0077] The five-constant air-conditioning system of the disclosed embodiment is provided with the seventh valve 67 in the second pipeline 53. The provision of the seventh valve 67 allows the system operator to independently control the water flow between the fan coil unit 30 and the radiation terminal 40. When the radiation terminal 40 is not needed to provide cooling or heating, by closing the seventh valve 67, the water flow of the system can be reduced, the energy consumption of the water pump can be reduced, and energy can be saved. Secondly, in the event that condensation may occur at the radiation terminal 40, by closing the seventh valve 67, cold water can be prevented from flowing directly to the radiation terminal 40, thereby avoiding the occurrence of condensation. In addition, when the fan coil unit 30 or the radiation terminal 40 needs to be maintained or overhauled, the seventh valve 67 can be closed to isolate the corresponding components without affecting other parts of the system, thereby facilitating maintenance work.

[0078] Optionally, the radiation end 40 includes: a water distributor 41, a water collector 42, a ground coil and a top radiation plate, one end of the water distributor 41 is connected to the second pipe 53; one end of the water collector 42 is connected to the other end of the water distributor 41, and the other end of the water collector 42 is connected to the return pipe 56; the ground coil is arranged between the water distributor 41 and the water collector 42, and the ground coil is connected to both the water distributor 41 and the water collector 42; the top radiation plate is arranged between the water distributor 41 and the water collector 42, and the top radiation plate is connected to both the water distributor 41 and the water collector 42.

[0079] The five-constant air conditioning system of the disclosed embodiment utilizes a water distributor 41, which evenly distributes water from the second pipeline 53 to the floor coils and ceiling radiant panels, ensuring that each area receives sufficient water for effective cooling or heating. A water collector 42 collects the water used by the floor coils and ceiling radiant panels and returns it to the return line 56, effectively managing the system's water circulation. The dual configuration of floor coils and ceiling radiant panels provides a more efficient heat exchange area, enabling the radiant terminals 40 to more effectively transfer heat and cold, thereby improving the overall efficiency of the five-constant air conditioning system. Furthermore, the combination of floor coils and ceiling radiant panels provides a more uniform and comfortable indoor temperature distribution, reducing indoor temperature differences and enhancing living comfort. Furthermore, the configuration of the water distributor 41 and water collector 42 enables independent or combined control of the floor coils and ceiling radiant panels, providing personalized temperature control for different rooms or areas. For example, in the summer, the floor coils may be primarily used for cooling, while in the winter, the ceiling radiant panels may be more heavily relied upon for heating.

[0080] Optionally, the water collector 42 is connected to a municipal water supply pipeline.

[0081] In this way, a new water source can be introduced from the municipal water supply pipeline to supply water to the five-constant air-conditioning system, realizing automatic water supply and replenishment of the five-constant air-conditioning system, reducing unnecessary water storage equipment and boosting equipment in the five-constant air-conditioning system, and reducing the complexity and cost of the system.

[0082] Optionally, the five-constant air-conditioning system also includes: a detection device and a controller, the detection device is used to detect the indoor dew point temperature; the controller is electrically connected to the detection device, the first valve 61, the second valve 62, the third valve 63 and the fourth valve 64, and the controller is configured to control the opening and closing of the first valve 61, the second valve 62, the third valve 63 and the fourth valve 64 according to the indoor dew point temperature detected by the detection device.

[0083] Using the five-constant air-conditioning system of the embodiment of the present disclosure, the controller automatically adjusts the opening and closing states of the first valve 61, the second valve 62, the third valve 63 and the fourth valve 64 according to the indoor dew point temperature monitored in real time by the detection device, thereby realizing automatic control of the system.

[0084] Specifically, when the five-constant system is turned on, the indoor temperature and humidity are relatively high, and the dew point temperature is also relatively high. The required water supply temperature of the radiation terminal 40 is increased accordingly. The fresh air module 20, the fan coil 30 and the radiation terminal 40 are operated in series. The cold water is first supplied to the fresh air module 20 by the heat pump host 10 to deeply cool and dehumidify the indoor return air. The water outlet of the fresh air module 20 enters the fan coil 30. At this time, the water temperature is relatively high but still lower than the dew point temperature of the room air. The indoor return air is cooled and dehumidified again after passing through the fan coil 30. The water outlet temperature of the fan coil 30 is now higher than the dew point temperature of the controlled room air, and the cold water of this water temperature is sent to the radiation terminal 40 to cool the air.

[0085] Optionally, the five-constant air-conditioning system further includes: an eighth valve, which is arranged in the return water pipe 56 and is used to control the connection or disconnection between the return water pipe 56 and the radiation terminal 40.

[0086] In this way, the return water of the heat pump main unit 10 can be controlled independently, and the eighth valve can be closed when the heat pump main unit 10 does not need return water.

[0087] Optionally, the controller is electrically connected to the fifth valve, the sixth valve, the seventh valve and the eighth valve, and is configured to control the operation of the fifth valve, the sixth valve, the seventh valve and the eighth valve according to the indoor dew point temperature detected by the detection device.

[0088] In this way, the automatic control of the five-constant air-conditioning system can be achieved.

[0089] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A five-constant air conditioning system, characterized in that: include: Heat pump host; The fresh air module is connected to the heat pump host through the water outlet pipe; The fan coil unit is connected to the fresh air module through the first pipeline. The radiation terminal is connected to the fan coil unit through a second pipeline and is connected to the heat pump host through a return pipeline, so that the cold water flowing out of the heat pump host flows through the fresh air module, the fan coil unit and the radiation terminal in sequence.

2. The five-constant air conditioning system according to claim 1, characterized in that: Also includes: The third pipeline has one end connected to the water outlet pipeline and the other end connected to the fan coil unit; The first valve is provided in the third pipeline and is used to control the connection or disconnection of the third pipeline.

3. The five-constant air conditioning system according to claim 2, characterized in that: The radiation terminal includes: a water distributor, one end of which is connected to the second pipeline; A water collector, one end of which is connected to the other end of the water distributor, and the other end of which is connected to the return water pipeline; The ground coil is located between the water distributor and the water collector and is connected to both the water distributor and the water collector; The top radiation plate is arranged between the water distributor and the water collector, and is connected to both the water distributor and the water collector.

4. The five-constant air conditioning system according to claim 2, characterized in that: Also includes: a first bypass pipeline, one end of which is connected to the first pipeline and the other end of which is connected to the second pipeline; The second valve is provided in the first bypass pipeline and is used to control the connection or disconnection of the first bypass pipeline.

5. The five-constant air conditioning system according to claim 4, characterized in that: Also includes: a fourth pipeline, one end of which is connected to the water outlet pipeline and the other end of which is connected to the radiation terminal; The third valve is provided in the fourth pipeline and is used to control the connection or disconnection of the fourth pipeline.

6. The five-constant air conditioning system according to claim 5, characterized in that: Also includes: The second bypass pipeline has one end connected to the second pipeline and the other end connected to the return pipeline. The fourth valve is provided in the second bypass pipeline and is used to control the connection or disconnection of the second bypass pipeline.

7. The five-constant air conditioning system according to claim 6, characterized in that: Also includes: The fifth valve is provided on the water outlet pipe and is used to control the connection or disconnection between the water outlet pipe and the fresh air module.

8. The five-constant air conditioning system according to claim 7, characterized in that: Also includes: The sixth valve is provided in the first pipeline and is used to control the connection or disconnection between the fresh air module and the fan coil unit.

9. The five-constant air conditioning system according to claim 8, characterized in that: Also includes: The seventh valve is provided in the second pipeline and is used to control the connection or disconnection between the fan coil unit and the radiation terminal.

10. The five-constant air conditioning system according to claim 9, characterized in that: Also includes: A detection device for detecting indoor dew point temperature; The controller is electrically connected to the detection device, the first valve, the second valve, the third valve and the fourth valve. The controller is configured to control the opening and closing of the first valve, the second valve, the third valve and the fourth valve according to the indoor dew point temperature detected by the detection device.

Images