Cooling water detection device for central air conditioner

Abstract

The utility model relates to a central air conditioner cooling water detection device which comprises a water inlet pipe, a water return pipe, a water flow sensing switch, a detection device and a central controller. The water inlet end of the water inlet pipe is suitable for being connected with the water outlet end of the central air conditioner to extract cooling water in the central air conditioner, and the water flow sensing switch is arranged on the water inlet pipe and suitable for opening or closing the water inlet pipe; the water outlet end of the water inlet pipe is connected with the water inlet end of the water return pipe, the detection device is arranged on the water return pipe, and the detection end of the detection device extends into a cavity of the water return pipe; the water outlet end of the water return pipe is connected with the water inlet end of the central air conditioner to send cooling water back into the central air conditioner; the central controller is electrically connected with the water flow sensing switch and the detection device and is suitable for receiving on-off information of the water flow sensing switch and controlling the detection device to detect cooling water in the water return pipe.

Description

Technical Field

[0001] This application relates to the field of central air conditioning technology, and in particular to a central air conditioning cooling water detection device. Background Technology

[0002] In the operation of a central air conditioning system, the quality of the cooling water has a significant impact on the system's normal operation and efficiency. Prolonged circulation of cooling water within the pipes can generate impurities, and poor-quality cooling water can lead to scale buildup and blockages inside the pipes. Therefore, it is necessary to replace the cooling water. Existing equipment cannot directly monitor the circulating cooling water within the pipes, making it impossible for staff to know the water quality in a timely and accurate manner. Operators can only replace the cooling water at fixed intervals. However, replacing the cooling water at fixed intervals may result in unnecessary replacements when the water quality is still good, leading to water waste and increased treatment costs. Summary of the Invention

[0003] In view of this, this application proposes a central air conditioning cooling water detection device, including: an inlet pipe, a return pipe, a water flow sensing switch, a detection device, and a central controller;

[0004] The inlet end of the water inlet pipe is suitable for connecting to the outlet end of the central air conditioner to extract cooling water from the central air conditioner. A water flow sensor switch is installed on the water inlet pipe to open or close the water inlet pipe.

[0005] The outlet end of the inlet pipe is connected to the inlet end of the return pipe. The detection device is installed on the return pipe, and the detection end of the detection device is inserted into the cavity of the return pipe. The outlet end of the return pipe is connected to the inlet end of the central air conditioner to send cooling water back into the central air conditioner.

[0006] The central controller is electrically connected to the water flow sensor switch and the detection device, and is suitable for receiving the switching information of the water flow sensor switch and controlling the detection device to detect the cooling water in the return water pipe.

[0007] In one possible implementation, the water flow sensing switch includes: a housing, a stop plate, a first sensor, and a second sensor; the housing has a cavity with openings at both ends, the two ends of which are installed on the water inlet pipe; the stop plate is movably disposed inside the housing, suitable for opening or closing the water inlet pipe; the second sensor is fixedly installed on the top inside the housing and electrically connected to the central controller; the first sensor is fixedly installed on the stop plate, suitable for the first sensor and the second sensor to come into contact with each other when cooling water impacts the stop plate.

[0008] In one possible implementation, a pivot is provided inside the housing, and one side of the waterstop plate is hinged to the housing via the pivot.

[0009] In a possible implementation, the limiting part is fixedly arranged in the shell, and the limiting plate is located in the circumferential direction of the rotation shaft of the water stop plate.

[0010] In a possible implementation, the input end of the transmission device is electrically connected with the output end of the second inductor, and the output end of the transmission device is electrically connected with the input end of the central controller.

[0011] In a possible implementation, the display module is electrically connected with the central controller, and is suitable for displaying the water quality detection data received by the central controller.

[0012] In a possible implementation, the communication unit is electrically connected with the central controller, and is suitable for uploading the received water quality detection data to a server.

[0013] Advantages of the present application

[0014] By arranging the detection device on the return water pipe, the detection device can detect the water quality of the cooling water in real time, so that the staff can timely and accurately master the change of the water quality of the cooling water, and the staff can timely find the water quality problem of the cooling water and process it, avoiding the pipe blockage caused by the water quality problem, and effectively ensuring the stable and efficient operation of the central air conditioning system. Compared with the existing technology of replacing the cooling water according to the fixed time interval, the central air conditioning cooling water detection device of the present application avoids the waste of water resources caused by blindly replacing the cooling water according to the fixed time interval, saves water resources, and reduces the maintenance cost.

[0015] The central controller is electrically connected with the water flow inductive switch and the detection device, respectively. The central controller can control the opening or closing of the detection device based on the information transmitted by the water flow inductive switch. This avoids the invalid operation of the detection device when there is no water flow, saves power consumption, prolongs the service life of the detection device, and reduces the operation cost.

[0016] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and serve to explain the principles of the present application.

[0018] Figure 1 Fig. 1 shows a schematic diagram of the main structure of the central air conditioning cooling water detection device of the present application;

[0019] Figure 2 Fig. 4 shows a sectional view of the water flow inductive switch of the present application;

[0020] Figure 3 A connection diagram between the central controller of the present application and each component is shown. DETAILED DESCRIPTION

[0021] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numbers in different drawings represent the same or similar elements. Although various aspects of embodiments are illustrated in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0022] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application or simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0024] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations.

[0025] In addition, in order to better illustrate the present application, a large number of specific details are given in the specific embodiments below. Those skilled in the art should understand that the present application can also be implemented without certain specific details. In some examples, methods, means, elements and circuits well known to those skilled in the art are not described in detail, in order to highlight the main idea of the present application.

[0026] The application provides a central air conditioner cooling water detection device, which comprises a water inlet pipe 110, a water return pipe 120, a water flow sensing switch 200, a detection device 300 and a central controller 400; the water inlet end of the water inlet pipe 110 is suitable for being connected with the water outlet end of the central air conditioner to extract cooling water in the central air conditioner, the water flow sensing switch 200 is arranged on the water inlet pipe 110 and is suitable for opening or closing the water inlet pipe 110; the water outlet end of the water inlet pipe 110 is connected with the water inlet end of the water return pipe 120, the detection device 300 is arranged on the water return pipe 120, and the detection end of the detection device 300 is inserted into the cavity of the water return pipe 120; the water outlet end of the water return pipe 120 is connected with the water inlet end of the central air conditioner and is suitable for sending the cooling water back into the central air conditioner; the central controller 400 is electrically connected with the water flow sensing switch 200 and the detection device 300 respectively and is suitable for receiving the switch information of the water flow sensing switch 200 and controlling the detection device 300 to detect the cooling water in the water return pipe 120.

[0027] It should be noted that the water inlet pipe 110 can directly extract the cooling water in operation from the central air conditioner cooling circulation system, avoids sample pollution or inconsistency with the actual operation water quality in the manual sampling process, improves the accuracy and reliability of the detection data, the water outlet end of the water inlet pipe 110 is connected with the water inlet end of the water return pipe 120, the water inlet pipe 110 and the water return pipe 120 form a cooling water flow loop, the water return pipe 120 sends the cooling water in the water inlet pipe 110 back to the central air conditioner cooling circulation system, the detection end of the detection device 300 is inserted into the cavity of the water return pipe 120 to detect the cooling water flowing through the water return pipe 120 and transmit the detection data to the central controller 400, and the design of the water inlet pipe 110 and the water return pipe 120 constructs a complete cooling water detection closed loop, so that the cooling water does not affect the normal circulation of the overall system after completing the detection process.

[0028] By arranging the detection device 300 on the water return pipe 120, the detection device 300 can detect the water quality of the cooling water in real time, so that the staff can timely and accurately master the change of the water quality of the cooling water, the staff can timely find the water quality problem of the cooling water and process it, avoid the pipe blockage caused by the water quality problem, and effectively ensure the stable and efficient operation of the central air conditioner system, compared with the existing technology of replacing the cooling water according to the fixed time interval, the central air conditioner cooling water detection device 300 of the application avoids the waste of water resources caused by blindly replacing the cooling water according to the fixed time interval, saves the water resources and reduces the maintenance cost.

[0029] The central controller 400 is electrically connected with the water flow sensing switch 200 and the detection device 300 respectively, and the central controller 400 can control the opening or closing of the detection device 300 based on the information transmitted by the water flow sensing switch 200; when the central air conditioning system is running and the cooling water is flowing normally, the water flow sensing switch 200 opens the water inlet pipe 110, so that the flow passage between the water inlet pipe 110 and the water return pipe 120 is open, thereby enabling the cooling water to flow smoothly into the water return pipe 120, and at the same time the water flow sensing switch 200 transmits the opening information to the central controller 400, and the central controller 400 controls the detection device 300 to start detecting the cooling water flowing in the water return pipe 120, and the detection device 300 transmits the detection data to the central controller 400; when the central air conditioning system stops running, the water flow sensing switch 200 closes the water inlet pipe 110, so that the flow passage between the water inlet pipe 110 and the water return pipe 120 is closed, at this time the central controller 400 does not receive the information transmitted by the water flow sensing switch 200, then the central controller 400 controls the detection device 300 to stop detecting, thereby avoiding the invalid running of the detection device 300 in the absence of water flow, saving power consumption, prolonging the service life of the detection device 300, and reducing the operating cost.

[0030] Preferably, the central controller 400 adopts an existing industrial computer with a model of nFioc-2400.

[0031] In a possible implementation manner, the detection device 300 is installed on the water return pipe 120, the detection device 300 is provided with a cavity with two open ends, and the two ends of the detection device 300 are respectively provided with external threads, and correspondingly, the water return pipe 120 is provided with internal threads matched with the external threads, and the detection device 300 is threadedly connected with the water return pipe 120, so that the cavity of the detection device 300 and the cavity of the water return pipe 120 are communicated to form a cooling water flow passage, and the detection device 300 is suitable for detecting the water quality data of the cooling water flowing back to the central air conditioner through the water return pipe 120, and the design that the detection device 300 is threadedly connected with the water return pipe 120 ensures the stable connection between the detection device 300 and the water return pipe 120, and avoids the leakage of the cooling water.

[0032] Further, the detection device 300 is provided with two detection devices 300, and the two detection devices 300 are adjacently arranged on the water return pipe 120, through the arrangement of the two detection devices 300, the two detection devices 300 can simultaneously detect the cooling water at similar positions in the water return pipe 120, the accuracy of the detection results is verified through comparison of the detection data, the misjudgment caused by the possible faults, errors or inaccurate detection of a single detection device 300 is avoided, and the reliability of the water quality detection is improved.

[0033] In a possible implementation manner, the detection device 300 is a water quality detection sensor in the prior art.

[0034] In one possible implementation, the water flow sensing switch 200 comprises: a shell 210, a stop flow plate 220, a first sensor 230, and a second sensor 240; the shell 210 is provided with an open-ended box, the open ends of the shell 210 are mounted on the water inlet pipe 110, the stop flow plate is movably arranged in the shell 210 and is adapted to open or close the water inlet pipe 110; the second sensor 240 is fixedly installed at the top of the shell 210 and is electrically connected with the central controller 400, and the first sensor 230 is fixedly installed on the stop flow plate and is adapted to be in contact with the second sensor 240 when the cooling water hits the stop flow plate.

[0035] It should be noted that the shell 210 is adapted to provide installation space for the internal devices, ensure the stability of the internal structure and not be interfered by external environmental factors, the shell 210 is in communication with the cavity of the water inlet pipe 110, the stop flow plate is arranged at the water inlet of the shell 210, the stop flow plate opens or closes the water inlet pipe 110 according to the flow of the cooling water, the first sensor 230 is fixedly installed on the side of the stop flow plate 220 away from the water inlet of the shell 210, and correspondingly, the second sensor 240 is fixedly installed in the shell 210, the first sensor 230 and the second sensor 240 are used to detect the position change of the stop flow plate 220 and transmit the detected information to the central controller 400.

[0036] Specifically, when the central air conditioning system is running, the cooling water flows into the water inlet pipe 110 and pushes away the stop flow plate 220, the stop flow plate 220 moves and drives the first sensor 230 on the stop flow plate to move towards the second sensor 240, so that the first sensor 230 is in contact with the second sensor 240, so that the two reed contacts in the second sensor 240 are in contact to generate an electric signal, at this time, the water inlet pipe 110 is in a conducting state, and the second sensor 240 transmits the electric signal of the stop flow plate 220 opening the water inlet pipe 110 to the central controller 400; when the central air conditioning system stops running, the cooling water stops flowing, and the stop flow plate is blocked at the water inlet of the shell 210 under the action of its own gravity, avoiding the backflow of the cooling water in the backwater pipe 120, and at the same time, since the first sensor 230 is not in contact with the second sensor 240, the two reed contacts in the second sensor 240 are in a disconnected state, at this time, the water inlet pipe 110 is in a disconnected state, and the second sensor 240 does not generate an electric signal, if the central controller 400 does not receive the electric signal, the central controller 400 controls the detection device 300 to stop detecting.

[0037] Further, the shell 210 is provided with a rotating shaft 250, and one side of the stop flow plate is hinged to the shell 210 through the rotating shaft 250.

[0038] The rotating shaft 250 is fixedly arranged in the shell 210 and above the water inlet, the length direction of the rotating shaft 250 is perpendicular to the length direction of the water inlet pipe 110, one side of the water stop plate is hingedly connected with the rotating shaft 250, and the water stop plate rotates around the rotating shaft 250 when the cooling water pushes the water stop plate, so that the water inlet pipe 110 is opened.

[0039] Further, the shell 210 is provided with a cavity with two open ends, the shell 210 is provided with a connecting portion at the opening, the shell 210 is connected with the water inlet pipe 110 through the connecting portion, the inner side wall of the first connecting portion is provided with an internal thread, and correspondingly, the outer side wall of the water inlet pipe 110 is provided with a matching external thread, the water inlet pipe 110 is inserted into the cavity of the connecting portion and is threadedly connected with the connecting portion, so that the cavity of the shell 210 and the cavity of the water inlet pipe 110 are communicated to form a cooling liquid flow channel, and the threaded connection ensures the stability of the connection between the shell 210 and the water inlet pipe 110, and leakage of the cooling water at the connection between the shell 210 and the water inlet pipe 110 is avoided.

[0040] Preferably, the water flow sensing switch 200 adopts a switch with a model number YZ-G1-ZH-1 in the prior art.

[0041] In a possible implementation manner, the top of the shell 210 is provided with a transmission device 410, the input end of the transmission device 410 is electrically connected with the output end of the second sensor 240, and the output end of the transmission device 410 is electrically connected with the input end of the central controller 400; the transmission device 410 is suitable for transmitting the electrical signal generated by the second sensor to the central controller 400.

[0042] Preferably, the transmission device 410 adopts a data transmission line in the prior art.

[0043] In a possible implementation manner, the limiting portion 260 is further included; the limiting portion 260 is fixedly arranged in the shell 210 and located in the circumferential direction of the rotation of the water stop plate around the rotating shaft 250.

[0044] It should be noted that the main body of the limiting portion 260 is in a rectangular plate structure, the limiting portion 260 is fixedly arranged in the shell 210, and the length direction of the limiting portion 260 is parallel to the length direction of the water inlet pipe 110, the limiting portion 260 is suitable for limiting the rotation angle of the water stop plate 220 around the rotating shaft 250, preventing the water stop plate 220 from excessively rotating under the impact force of the cooling water flow and causing the first sensor 230 and the second sensor 240 to collide hard, reducing the risk of damage of the first sensor 230 and the second sensor 240, and prolonging the service life of the water flow sensing switch 200.

[0045] Preferably, the rotation angle of the water stop plate is 85°-95°.

[0046] In a possible implementation, the display module 510 is electrically connected with the central controller 400, and is adapted to display the water quality detection data received by the central controller 400. It should be noted that the central controller 400 receives the water quality data and transmits the water quality data to the display module 510, and the display module 510 displays the water quality data, so that the staff can intuitively view the water quality data of the cooling water through the display module 510, and the efficiency of information acquisition is improved.

[0047] Preferably, the display module 510 is a color liquid crystal display in the prior art.

[0048] In a possible implementation, the communication unit 520 is electrically connected with the central controller 400, and is adapted to upload the received water quality detection data to the server 530. It should be noted that the output end of the central controller 400 is electrically connected with the input end of the communication unit 520, and the central controller 400 transmits the detected water quality data to the server 530 in a timely and rapid manner through the communication unit 520, the server 530 stores the received water quality detection data, and the operating personnel can extract the historical detection data stored in the server 530, so that the historical detection record can be traced back.

[0049] Further, the communication unit 520 is a conventional wireless data transmission technology such as 5G network communication or cloud communication, so that the central controller 400 transmits the detection data to the server 530 through 5G network communication or cloud communication.

[0050] The above has described the embodiments of the present application, and the above description is exemplary, is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles, practical application or improvement of the technology in the market of the embodiments, or to enable other ordinary skilled in the art to understand the embodiments disclosed herein.

Claims

1. A central air conditioning cooling water detecting device, characterized by, The utility model relates to a central air conditioner cooling water quality detection device, including: Water inlet pipe, backwater pipe, water flow induction switch, detection device and central controller; The water inlet end of the water inlet pipe is suitable for being connected with the water outlet end of the central air conditioner to extract cooling water in the central air conditioner, and the water flow induction switch is arranged on the water inlet pipe and is suitable for opening or closing the water inlet pipe; The water outlet end of the water inlet pipe is connected with the water inlet end of the backwater pipe, the detection device is arranged on the backwater pipe, and the detection end of the detection device is inserted into the cavity of the backwater pipe; the water outlet end of the backwater pipe is connected with the water inlet end of the central air conditioner and is suitable for sending cooling water back into the central air conditioner; The central controller is electrically connected with the water flow induction switch and the detection device respectively and is suitable for receiving switch information of the water flow induction switch and controlling the detection device to detect cooling water in the backwater pipe.

2. The central air conditioning cooling water detection device according to claim 1, characterized in that, The water flow induction switch includes: a shell, a water stop plate, a first inductor and a second inductor; The shell is provided with a cavity with two open ends, the open ends of the shell are mounted on the water inlet pipe, the water stop plate is movably arranged in the shell and is suitable for opening or closing the water inlet pipe; The second inductor is fixedly installed at the top of the shell and is electrically connected with the central controller, and the first inductor is fixedly installed on the water stop plate and is suitable for being in contact with the second inductor when the cooling water impacts the water stop plate.

3. The central air conditioning cooling water detection device according to claim 2, characterized by The shell is provided with a rotating shaft, and one side of the water stop plate is hinged in the shell through the rotating shaft.

4. The central air conditioning cooling water detection device according to claim 3, characterized in that, Further comprising a limiting part; The limiting part is fixedly arranged in the shell, and the limiting part is located in the circumferential direction of the rotation of the water stop plate around the rotating shaft.

5. The central air conditioning cooling water detecting device according to claim 2, wherein The top of the shell is provided with a transmission device; The input end of the transmission device is electrically connected with the output end of the second inductor, and the output end of the transmission device is electrically connected with the input end of the central controller.

6. The central air conditioning cooling water detecting device according to claim 1, wherein Further comprising a display module, the display module is electrically connected with the central controller and is suitable for displaying water quality detection data received by the central controller.

7. The central air conditioning cooling water detecting device according to claim 1, wherein Further comprising a communication unit, the communication unit is electrically connected with the central controller and is suitable for uploading the received water quality detection data to a server.

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