Intelligent bypass device and water-cooled central air conditioning system

Abstract

The utility model discloses a kind of intelligent bypass device and water-cooled central air conditioning system, intelligent bypass device includes box, box door is covered on box, and intelligent bypass valve, communicating pipe, sensor component, controller and water replenishing component are installed in box, the both ends of communicating pipe are respectively set as bypass water inlet interface and bypass water outlet interface and extend outside box, intelligent bypass valve is connected on communicating pipe;Box is equipped with a mounting box body with mounting cavity, controller is mounted and fixed in mounting cavity.The utility model integrates intelligent bypass valve, controller and water replenishing component into box, directly pre-installed in manufacturer, form modular structure, it is easy to install when central air conditioning system construction, compact structure;Meanwhile, mounting box body is arranged in box, so that the space of controller installation and the pipeline and valve component in box can be spaced apart, safe in use, easy to maintain.

Description

Technical Field

[0001] This utility model belongs to the field of water system technology, specifically relating to an intelligent bypass device and a water-cooled central air conditioning system. Background Technology

[0002] Water-cooled central air conditioning systems, as the mainstream temperature control solution for modern buildings, achieve heat distribution through circulating water, exhibiting good thermal stability and energy efficiency. When the system uses floor radiant terminals, a differential pressure bypass valve is typically installed between the main supply and return water pipes of the main unit to maintain hydraulic balance and ensure coordinated operation of multiple terminals. When changes in terminal load cause fluctuations in the differential pressure of the pipe network, the differential pressure bypass valve maintains a constant differential pressure in the main pipe by adjusting its opening. With increasingly complex regional environmental requirements, in actual operation, when sudden changes in flow rate occur at local terminals, the differential pressure bypass valve, located in the main supply and return water pipes of the main unit, has a long signal transmission path and may not be able to respond quickly enough, leading to transient hydraulic imbalances in the system. Furthermore, a malfunction of the differential pressure bypass valve can also affect the normal operation of the entire system.

[0003] Therefore, to solve the above problems, differential pressure bypass valves are often installed in each area, along with corresponding water supply valves, sensors, and other components. This results in a large number of parts in the entire air conditioning system, which can become quite messy and inefficient for inspection and maintenance if not installed properly. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned technical problems existing in the prior art, and to provide an intelligent bypass device and a water-cooled central air conditioning system. The intelligent bypass valve, controller and water supply components are integrated into the cabinet and pre-installed directly at the factory to form a modular structure. This makes installation convenient and the structure compact during the construction of the central air conditioning system. At the same time, an installation box is set in the cabinet so that the space for installing the controller can be separated from the pipes and valve components in the cabinet, making it safe to use and easy to maintain.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An intelligent bypass device includes a housing and a door mounted on the housing. The housing contains an intelligent bypass valve, a connecting pipe, a sensor assembly, a controller, and a water supply assembly. The two ends of the connecting pipe extend out of the housing to form a bypass inlet and a bypass outlet. The intelligent bypass valve is located on the connecting pipe. The water supply assembly includes a water supply branch pipe and a water supply valve. One end of the water supply branch pipe is connected to the connecting pipe, and the other end of the water supply branch pipe extends out of the housing to form a water supply interface. The water supply valve is located on the water supply branch pipe. The housing contains a mounting box with an installation cavity, and the controller is installed and fixed in the installation cavity.

[0006] Furthermore, the enclosure includes a mounting back panel and a side panel frame. The side panel frame is a rectangular frame that runs through both ends. Connecting flanges are provided at both ends of the side panel frame. The mounting back panel abuts against the ends of the side panel frame and is attached and fixed to the connecting flanges.

[0007] Furthermore, the side wall of the side plate frame is provided with inlet holes, outlet holes, water supply through holes and side holes. One end of the connecting pipe extends out of the inlet hole to form a bypass water inlet interface, and the other end of the connecting pipe extends out of the outlet hole to form a bypass water outlet interface. One end of the water supply branch pipe extends out of the water supply through hole to form a water supply interface.

[0008] Furthermore, the side panel frame includes two side panel units arranged opposite each other. Each side panel unit includes a base plate and extensions located at both ends of the base plate. The extensions of the two side panel units are connected one-to-one.

[0009] Furthermore, the door includes a door panel and protective flanges located around the perimeter of the door panel. When the door is installed on the box body, the protective flanges surround the outside of the box body and are fixedly connected to the box body by connectors. There is a gap between the protective flanges and the outer wall of the box body to form an airflow channel.

[0010] Furthermore, the mounting back plate is provided with at least one pipe connection seat, which has a limiting cavity and a first connection part. The limiting cavity is for the connecting pipe to pass through, and the first connection part is fixedly connected to the mounting back plate.

[0011] Furthermore, the pipeline connection seat includes a connection support and a limiting frame. The connection support includes an abutment portion and support portions located at both ends of the abutment portion. The end of the support portion is provided with a first connection portion. The limiting frame is fixedly installed on the connection support, and a limiting cavity is formed between the limiting frame and the abutment portion.

[0012] Furthermore, the limiting frame includes an arched limiting part and a second connecting part integrally connected to both ends of the arched limiting part. The second connecting part is fixedly connected to the abutting part, and a limiting cavity is formed between the arched limiting part and the abutting part for the connecting tube to pass through.

[0013] Furthermore, one end of the mounting cavity is open, and the opening of the mounting cavity faces the door of the box. A terminal block is installed inside the mounting cavity. A wire passage hole communicating with the mounting cavity is provided on the side wall of the mounting box. Box flanges are provided on both the upper and lower sides of the mounting box. The box flanges abut against and limit the box body, and the box flanges are fixedly connected to the box body.

[0014] A water-cooled central air conditioning system includes a main unit, an intelligent hydraulic module, and at least one regional intelligent system. The main unit is provided with a main unit outlet and a main unit return water inlet. The intelligent hydraulic module is connected between the main unit outlet and the main unit return water inlet. The intelligent hydraulic module is provided with a first outlet and a first return water inlet. The regional intelligent system includes an intelligent bypass device as described above and several terminal modules. The bypass inlet is connected to the first outlet through a water supply pipe, and the bypass outlet is connected to the first return water inlet through a return water pipe. Each terminal module is connected to a water supply branch pipe and a return water branch pipe. Each water supply branch pipe is connected to the water supply pipe, and each return water branch pipe is connected to the return water pipe. The controller is connected to each terminal module via a signal connection.

[0015] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects: This utility model has a reasonable structural design and strong practicality. It integrates the intelligent bypass valve, controller and water supply components into the cabinet, which is pre-installed directly by the manufacturer to form a modular structure. This makes it easy to install during the construction of the central air conditioning system and the structure is compact. At the same time, the installation box is set in the cabinet, so that the space for installing the controller can be separated from the pipes and valve components in the cabinet, making it safe to use and easy to maintain. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of an intelligent bypass device according to the present invention; Figure 2 This is a schematic diagram of the structure of an intelligent bypass device of the present invention, excluding the cabinet door; Figure 3 This is an exploded view of the housing and door in an intelligent bypass device according to this utility model; Figure 4 This is a cross-sectional schematic diagram of an intelligent bypass device according to the present invention; Figure 5 for Figure 4 Enlarged schematic diagram of the local structure at point A Figure 6 This is a schematic diagram of the internal installation of the housing in an intelligent bypass device according to this utility model; Figure 7 This is a schematic diagram of the pipeline connection seat structure in an intelligent bypass device according to this utility model; Figure 8 This invention relates to a water-cooled central air conditioning system that utilizes the intelligent bypass device of this invention.

[0017] In the diagram, 1-box body; 11-mounting back panel; 12-side panel frame; 121-side panel unit; 1211-base plate; 1212-extension; 122-inlet; 123-outlet; 124-water supply through hole; 125-side hole; 13-connecting flange; 131-cantilevered horizontal plate; 132-abutting vertical plate; 2-box door; 21-door panel; 22-protective flange; 3-intelligent bypass valve; 4-connecting pipe; 41-horizontal pipe; 42-vertical pipe; 43-pipeline connector; 431-connecting support; 432-limiting frame; 4311-abutting part; 4312-supporting part; 4321-arched limiter. Part; 4322-Second connecting part; 44-Limiting cavity; 45-First connecting part; 5-Sensor assembly; 6-Controller; 7-Water replenishment assembly; 71-Water replenishment branch pipe; 72-Water replenishment valve; 8-Mounting box; 81-Wire hole; 82-Box flange; 83-Mounting cavity; 9-Terminal socket; 01-Main unit; 02-Intelligent hydraulic module; 03-Intelligent bypass device; 04-Terminal module; 041-Dehumidifying fresh air module; 042-Fan coil; 043-Floor radiant module; 031-Bypass water inlet interface; 032-Bypass water outlet interface; 033-Water replenishment interface; 05-Water supply pipe; 06-Return water pipe. Detailed Implementation

[0018] like Figures 1 to 7 As shown, this utility model discloses an intelligent bypass device, which includes a housing 1 and a door 2 covering the housing 1. The housing 1 is equipped with an intelligent bypass valve 3, a connecting pipe 4, a sensor assembly 5, a controller 6, and a water supply assembly 7. The intelligent bypass valve 3, the controller 6, and the water supply assembly 7 are integrated into the housing 1 and pre-installed at the factory, forming a modular structure. This makes installation convenient and the structure compact during the construction of the central air conditioning system.

[0019] The enclosure 1 includes a mounting back plate 11 and a side frame 12. The side frame 12 is a rectangular frame extending through both ends. Connecting flanges 13 are provided at both ends of the side frame 12, extending inwards. The mounting back plate 11 abuts against the ends of the side frame 12 and is fixedly attached to the corresponding connecting flanges 13. The connecting flanges 13 at both ends of the side frame 12 improve the structural strength of the enclosure 1 and facilitate the connection of the mounting back plate 11, eliminating the need for connecting structures on the inner sidewalls of the enclosure 1 and simplifying its structure. The mounting back plate 11 is a rectangular plate with a cross-section corresponding to that of the side frame 12. The mounting back plate 11 abuts against the ends of the side frame 12 and is fixedly connected to the side frame 12 with screws, ensuring a secure assembly. The mounting back panel 11 and the side panel frame 12 are both metal plates, either steel plates or aluminum alloy plates. In this application, steel plates are preferred. The connecting flange 13 is formed by bending sheet metal, which improves the structural strength of the side panel frame 12.

[0020] The side panel frame 12 includes two side panel units 121 arranged opposite to each other. Each side panel unit 121 includes a base plate 1211 and extensions 1212 located at both ends of the base plate 1211. Connecting flanges 13 are bent along the edges of the base plate 1211 and the extensions 1212. That is, the base plate 1211, the two extensions 1212, and the connecting flanges 13 are all formed by bending sheet metal. The two side panel units 121 are arranged vertically opposite to each other. The two extensions 1212 of the upper side panel unit 121 correspond one-to-one with the two extensions 1212 of the lower side panel unit 121 and are connected and fixed by screws. The side panel frame 12 is designed as a split unit. One side panel unit 121 can be installed and fixed to the mounting back plate 11 first, and then the pipes and equipment can be installed in the housing 1 before installing the other side panel unit 121. This makes it convenient for workers to install and reduces the difficulty of installation.

[0021] The door 2 is installed at the through-hole at one end of the side panel frame 12, opposite to the mounting back panel 11. The door 2 includes a door panel 21 and protective flanges 22 around the perimeter of the door panel 21. When the door 2 is installed on the box body 1, the protective flanges 22 face the box body 1, so that the protective flanges 22 surround the outside of the box body 1. The protective flanges 22 are fixedly connected to the box body 1 by connectors, which are bolts. The upper protective flanges 22 are bolted to the base plate 1211 of the upper side panel unit 121, and the lower protective flanges 22 are bolted to the base plate 1211 of the lower side panel unit 121. This ensures the installation of the door 2 and the box body 1 is firm. After the door 2 and the box body 1 are installed and fixed, the protective flanges 22 are not attached to the outer wall of the box body 1, so that there is a gap between the protective flanges 22 and the outer wall of the box body 1 to form an airflow channel, which allows the heat emitted by the controller 6 to be dissipated and extends the service life of the controller 6.

[0022] To improve the connection stability between the door 2 and the body 1, the upper side panel unit 121 extends towards the lower edge of the connecting flange 13 of the door 2 to form a cantilevered horizontal plate 131. The edge of the cantilevered horizontal plate 131 extends upward away from the connecting flange 13 to form an abutting vertical plate 132. When the door 2 is closed on the body 1, the abutting vertical plate 132 abuts and limits the back of the door panel 21, providing additional support and effectively preventing the door 2 from deforming. At the same time, this design also ensures that there is a certain distance between the door panel 21 and the body 1. Combined with the formation of the gap between the protective flange 22 and the outer wall of the body 1, it is more conducive to the air circulation inside the body 1, improves heat transfer, effectively reduces the internal temperature of the body 1, and improves the stability and reliability of the device.

[0023] The side wall of the side plate frame 12 is provided with an inlet hole 122, an outlet hole 123 and a water supply through hole 124. One end of the connecting pipe 4 extends out of the inlet hole 122 to form a bypass water inlet interface 031, and the other end of the connecting pipe 4 extends out of the outlet hole 123 to form a bypass water outlet interface 032. One end of the water supply branch pipe 71 extends out of the water supply through hole 124 to form a water supply interface 033. The inlet hole 122, outlet hole 123, and water supply through hole 124 are preferably disposed on the base plate 1211 of the upper side plate unit 121. The connecting pipe 4 is installed inside the housing 1. The connecting pipe 4 includes a horizontal pipe 41 and a vertical pipe 42 connecting the two ends of the horizontal pipe 41. The end of one vertical pipe 42 extends out of the outlet hole 123 to form a bypass water outlet interface 032, and the end of the other vertical pipe 42 extends out of the inlet hole 122 to form a bypass water inlet interface 031. Sensor components 5 are disposed on both vertical pipes 42. The intelligent bypass valve 3 is connected to the horizontal pipe 41 through a bypass branch pipe. The water supply component 7 includes a water supply branch pipe 71 and a water supply valve 72. One end of the water supply branch pipe 71 is connected to the connecting pipe 4, and the other end of the water supply branch pipe 71 extends out of the housing 1 to form a water supply interface 033. The water supply valve 72 is disposed on the water supply branch pipe 71.

[0024] The mounting backplate 11 is provided with at least one pipe connector 43. Preferably, two pipe connectors 43 are provided on the transverse pipe 41 of the connecting pipe 4. Each pipe connector 43 has a limiting cavity 44 and a first connecting part 45. The limiting cavity 44 allows the connecting pipe 4 to pass through, and the first connecting part 45 is fixedly connected to the mounting backplate 11. The pipe connectors 43 serve to limit and fix the connecting pipe 4 within the housing 1.

[0025] The pipe connection seat 43 includes a connecting support 431 and a limiting frame 432. The connecting support 431 includes an abutment portion 4311 and support portions 4312 located at both ends of the abutment portion 4311. A first connecting portion 45 is provided at the end of the support portion 4312. The limiting frame 432 is fixedly installed on the connecting support 431, and a limiting cavity 44 is formed between the limiting frame 432 and the abutment portion 4311. The limiting frame 432 includes an arched limiting portion 4321 and a second connecting portion 4322 integrally connected to both ends of the arched limiting portion 4321. The second connecting portion 4322 is fixedly connected to the abutment portion 4311, and a limiting cavity 44 is formed between the arched limiting portion 4321 and the abutment portion 4311 to allow the connecting pipe 4 to pass through. The connecting support 431 supports the connecting pipe 4, so that there is a certain distance between the connecting pipe 4 and the mounting back plate 11, which facilitates the installation and adjustment of the connecting pipe 4. The arched limiting part 4321 can more easily limit the connecting pipe 4 to the limiting cavity 44, and has good fixation.

[0026] Inside the enclosure 1, near the door 2, there is a mounting box 8 with a mounting cavity 83. The controller 6 is installed and fixed inside the mounting cavity 83. The mounting box 8 is rectangular to ensure the space of the mounting cavity 83. One end of the mounting cavity 83 is open, and the opening of the mounting cavity 83 faces the door 2. A terminal block 9 is installed inside the mounting cavity 83. A wire hole 81 communicating with the mounting cavity 83 is provided on the side wall of the mounting box 8. A side hole 125 is also provided on one side wall of the side plate frame 12. The power line, signal line, etc. connected to the controller 6 pass through the wire hole 81 and the side hole 125 in sequence to connect to the external equipment. The upper and lower sides of the mounting box 8 are provided with box flanges 82. The box flanges 82 abut against and limit the enclosure 1. The box flanges 82 are fixedly connected to the connecting flange 13 on the side plate frame 12 facing the door 2. Therefore, by setting a cantilevered horizontal plate 131 and an abutting vertical plate 132 at the connecting flange 13 of the upper side panel unit 121, a certain gap can be created between the opening of the mounting box 8 and the door panel 21, improving the heat dissipation effect. The opening of the mounting cavity 83 faces the door 2, which facilitates the maintenance of the controller 6 components and allows the components of the electrical control system, such as the controller 6 and the terminal block 9, to be modularized, making installation more convenient.

[0027] like Figure 8 As shown, this utility model also discloses a water-cooled central air conditioning system, including a main unit 01, an intelligent hydraulic module 02, and at least one regional intelligent system. The main unit 01 is provided with a main unit outlet and a main unit return outlet. The intelligent hydraulic module 02 is connected between the main unit outlet and the main unit return outlet, and is provided with a first outlet and a first return outlet. Preferably, two regional intelligent systems are provided, and each regional intelligent system includes an intelligent bypass device 03 as described above and several terminal modules 04. Figure 8 The example illustrates three terminal modules 04: a dehumidifying fresh air module 041, a fan coil unit 042, and a floor radiant module 043. The bypass inlet 031 of the intelligent bypass device 03 is connected to the first outlet via a water supply pipe 05, and the bypass outlet 032 is connected to the first return outlet via a return pipe 06. Each terminal module 04 is connected to a water supply branch pipe and a return branch pipe. Each water supply branch pipe is connected to the water supply pipe 05, and each return branch pipe is connected to the return pipe 06. The controller 6 establishes a signal connection with each terminal module 04. The highly integrated and modular intelligent bypass device 03 is directly connected to the water supply pipe 05, facilitating the installation of the air conditioning system. The system features regionalized intelligent control, fast response, good redundancy, and reduced exposure of parts and connectors, improving aesthetics. Furthermore, a malfunction in the intelligent bypass device 03 in one area will not affect the entire system, enhancing system safety.

[0028] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. An intelligent bypass device, characterized in that: It includes a housing and a door fitted onto the housing. The housing contains an intelligent bypass valve, a connecting pipe, a sensor assembly, a controller, and a water supply assembly. The two ends of the connecting pipe extend out of the box to form a bypass inlet and a bypass outlet, and the intelligent bypass valve is installed on the connecting pipe. The water supply component includes a water supply branch pipe and a water supply valve. One end of the water supply branch pipe is connected to the connecting pipe, and the other end of the water supply branch pipe extends out of the box to form a water supply interface. The water supply valve is located on the water supply branch pipe. The housing contains a mounting box with a mounting cavity, and the controller is installed and fixed inside the mounting cavity.

2. The intelligent bypass device according to claim 1, characterized in that: The enclosure includes a mounting back panel and a side panel frame. The side panel frame is a rectangular frame that extends through both ends. Connecting flanges are provided at both ends of the side panel frame. The mounting back panel abuts against the end of the side panel frame and is attached and fixed to the connecting flanges.

3. The intelligent bypass device according to claim 2, characterized in that: The side wall of the side plate frame is provided with an inlet hole, an outlet hole, a water supply through hole and a side hole. One end of the connecting pipe extends out of the inlet hole to form the bypass water inlet interface, and the other end of the connecting pipe extends out of the outlet hole to form the bypass water outlet interface. One end of the water supply branch pipe extends out of the water supply through hole to form the water supply interface.

4. The intelligent bypass device according to claim 2, characterized in that: The side panel frame includes two side panel units arranged opposite each other. Each side panel unit includes a base plate and extensions at both ends of the base plate. The extensions of the two side panel units are connected in a one-to-one correspondence.

5. The intelligent bypass device according to claim 1, characterized in that: The door includes a door panel and protective flanges located around the perimeter of the door panel. When the door is installed on the box body, the protective flanges surround the outside of the box body and are fixedly connected to the box body by connectors. There is a gap between the protective flanges and the outer wall of the box body to form an airflow channel.

6. The intelligent bypass device according to claim 2, characterized in that: The mounting backplate is provided with at least one pipe connection seat, the pipe connection seat is provided with a limiting cavity and a first connecting part, the limiting cavity is for the connecting pipe to pass through, and the first connecting part is fixedly connected to the mounting backplate.

7. The intelligent bypass device according to claim 6, characterized in that: The pipeline connection seat includes a connecting support and a limiting frame. The connecting support includes an abutment portion and support portions located at both ends of the abutment portion. The end of the support portion is provided with the first connecting portion. The limiting frame is fixedly installed on the connecting support, and the limiting frame and the abutment portion form the limiting cavity.

8. The intelligent bypass device according to claim 7, characterized in that: The limiting frame includes an arched limiting part and a second connecting part integrally connected to both ends of the arched limiting part. The second connecting part is fixedly connected to the abutting part, and the limiting cavity is formed between the arched limiting part and the abutting part for the connecting pipe to pass through.

9. The intelligent bypass device according to claim 1, characterized in that: One end of the mounting cavity is open, and the opening of the mounting cavity faces the box door. A terminal block is provided inside the mounting cavity. A wire passage hole communicating with the mounting cavity is provided on the side wall of the mounting box. Box flanges are provided on both the upper and lower sides of the mounting box. The box flanges abut against and limit the box body, and the box flanges are fixedly connected to the box body.

10. A water-cooled central air conditioning system, characterized in that, include: The main unit is equipped with a main unit water outlet and a main unit water return outlet; A smart hydraulic module is connected between the main unit's water outlet and the main unit's water return port, and the smart hydraulic module is provided with a first water outlet and a first water return port; At least one regional intelligent system, the regional intelligent system including an intelligent bypass device as described in any one of claims 1 to 9 and a plurality of terminal modules, wherein the bypass water inlet is connected to the first water outlet through a water supply pipe, the bypass water outlet is connected to the first water return outlet through a water return pipe, each terminal module is connected to a water supply branch pipe and a water return branch pipe, each water supply branch pipe is connected to the water supply pipe, each water return branch pipe is connected to the water return pipe, and the controller is connected to each terminal module via a signal connection.

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