Central air conditioner plate heat exchange rate control device

Abstract

The utility model relates to the technical field of plate heat exchangers, and provides a central air conditioner plate heat exchange rate control device which comprises a plate heat exchanger, one side of the plate heat exchanger is provided with a water inlet pipe used for introducing heat exchange media and a water outlet pipe used for discharging the heat exchange media, and a plurality of communicating pipes are connected between the water inlet pipe and the water outlet pipe. A flow controller is arranged on the communicating pipe, the flow controller comprises a shell, and a valve element part capable of sliding is arranged in the shell; the motor works to drive the threaded rod to rotate, under the threaded fit of the threaded rod and the threaded hole of the fixing plate and the sliding limiting of the guide strip and the guide groove on the outer side of the mounting seat, the valve element piece can be driven to slide left and right in the shell, and then the relative position of the cylindrical plug in the shell is adjusted; through the alignment degree of the through holes in the cylindrical plugs and the inner holes of the communicating pipes, synchronous adjustment of the flow of the communicating pipes is achieved, and the problem that in the prior art, flow adjusting valves are independently arranged and cannot be adjusted and controlled in a unified mode is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of plate heat exchangers, and specifically, to a control device for the heat exchange rate of a central air-conditioning plate heat exchanger. Background Art

[0002] Due to the compact structure of the plate heat exchanger and the large heat exchange area per unit volume, the floor area is small, which is particularly important for the central air-conditioning machine room with limited space. The heat exchange rate of the central air-conditioning plate heat exchanger is closely related to the flow rate of the heat exchange medium. When adjusting the flow rate of the pump or changing the valve opening, the flow rate of the fluid entering the plate heat exchanger can be controlled. Increasing the flow rate usually increases the heat exchange rate because more fluid can transfer heat faster. On the contrary, reducing the flow rate will reduce the heat exchange rate.

[0003] As disclosed in the patent with the publication number CN212300041U, a flow rate regulating mechanism for a plate heat exchanger is provided, which includes a plate heat exchanger, a shunt pipe, and a flow rate regulating valve. An inlet and an outlet are provided on the plate heat exchanger. One end of the shunt pipe is communicated with the inlet, and the other end of the shunt pipe is communicated with the outlet. The flow rate regulating valve is arranged on the shunt pipe and can control the amount of water flowing through the shunt pipe; by arranging a shunt pipe and a flow rate regulating valve between the inlet and the outlet of the plate heat exchanger, the flow rate regulating valve can adjust the flow rate of the water flowing through the shunt pipe, so as to adjust the amount of water entering the plate heat exchanger for heat exchange, and realize the function of regulating the heat exchange flow rate.

[0004] However, the above-mentioned flow rate regulating mechanism for the plate heat exchanger still has the following problems: the above-mentioned flow rate regulating mechanism for the plate heat exchanger independently arranges a flow rate regulating valve on the shunt pipe arranged between the inlet and the outlet of the plate heat exchanger, and controls the flow rate of the water flowing through the shunt pipe by controlling each flow rate regulating valve, so as to adjust the amount of water entering the plate heat exchanger for heat exchange. Due to the independent arrangement of the flow rate regulating valves, unified regulation cannot be achieved, which causes inconvenience. Summary of the Utility Model

[0005] The utility model provides a control device for the heat exchange rate of a central air-conditioning plate heat exchanger, which solves the problem that unified regulation cannot be achieved due to the independent arrangement of the flow rate regulating valves in the prior art.

[0006] The technical solution of the utility model is as follows: a control device for the heat exchange rate of a central air-conditioning plate heat exchanger includes a plate heat exchanger. An inlet pipe for the heat exchange medium to enter and an outlet pipe for the heat exchange medium to be discharged are arranged on one side of the plate heat exchanger. A plurality of connecting pipes are connected between the inlet pipe and the outlet pipe. A flow controller is arranged on the connecting pipe. The flow controller includes a housing. A sliding spool member is arranged in the housing. A plurality of cylindrical plugs for synchronously opening and closing each connecting pipe are arranged on the spool member. A driving member for adjusting the relative position of the cylindrical plugs is arranged in the housing.

[0007] Preferably, a guiding groove is formed in the outer shell, and a fixing plate is fixed in the outer shell.

[0008] Preferably, the valve core member includes a valve rod, one end of the valve rod is fixed with a mounting seat, a guiding strip slidably matched with the guiding groove is arranged on the outer side of the mounting seat, and a mounting hole is formed in the outer end face of the valve rod.

[0009] Preferably, the cylindrical plug is fixedly sleeved outside the valve rod, and a through hole is formed in the cylindrical plug and the valve rod in a penetrating manner.

[0010] Preferably, the driving member includes a motor, the motor is fixedly embedded in the mounting hole, and a threaded rod is fixed to the output end of the motor.

[0011] Preferably, a threaded hole is formed in the center of the fixing plate, and the threaded rod is in threaded fit with the threaded hole of the fixing plate.

[0012] The beneficial effects of the present utility model are as follows:

[0013] In the present utility model, the motor works to drive the threaded rod to rotate. Under the threaded fit between the threaded rod and the threaded hole of the fixing plate, and the sliding limit between the guiding strip on the outer side of the mounting seat and the guiding groove, the valve core member can be driven to slide left and right in the outer shell, so as to adjust the relative position of the cylindrical plug in the outer shell. By the alignment degree between the through holes on each cylindrical plug and the inner holes of each communicating pipe, the synchronous adjustment of the flow rates of each communicating pipe is realized, and the problem that the independent setting of the flow regulating valve in the prior art cannot be uniformly regulated is solved. Description of the Drawings

[0014] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0015] Figure 1 It is a schematic structural diagram of a central air-conditioning plate heat exchanger heat transfer rate control device proposed by the present utility model;

[0016] Figure 2 It is a schematic structural diagram of a flow controller proposed by the present utility model;

[0017] Figure 3 It is a schematic semi-sectional structure diagram of a flow controller proposed by the present utility model;

[0018] Figure 4 It is a schematic front semi-sectional view of a flow controller proposed by the present utility model;

[0019] Figure 5 It is a schematic structural diagram of a valve core member and a cylindrical plug proposed by the present utility model;

[0020] In the figure: 1, plate heat exchanger; 2, water inlet pipe; 3, water outlet pipe; 4, connecting pipe; 5, flow controller; 51, housing; 511, guide groove; 512, fixed plate; 52, valve core member; 521, valve rod; 522, mounting seat; 523, guide bar; 524, mounting hole; 53, cylindrical plug; 531, through hole; 54, driving member; 541, motor; 542, threaded rod. Specific embodiments

[0021] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0022] Please refer to Figure 1 , Figure 2 and Figure 3 , the present invention provides a technical solution: a control device for the heat exchange rate of a central air-conditioning plate heat exchanger, including a plate heat exchanger 1. On one side of the plate heat exchanger 1, there is a water inlet pipe 2 for the heat exchange medium to enter and a water outlet pipe 3 for the heat exchange medium to exit. A plurality of connecting pipes 4 are connected between the water inlet pipe 2 and the water outlet pipe 3. A flow controller 5 is arranged on the connecting pipe 4. The flow controller 5 includes a housing 51. Inside the housing 51, there is a valve core member 52 that can slide. On the valve core member 52, there are a plurality of cylindrical plugs 53 for synchronously opening and closing each connecting pipe 4. Inside the housing 51, there is a driving member 54 for adjusting the relative position of the cylindrical plugs 53.

[0023] Please refer to Figure 3 and Figure 4 , a guide groove 511 is opened inside the housing 51, and a fixed plate 512 is fixed inside the housing 51.

[0024] Please refer to Figure 5 , the valve core member 52 includes a valve rod 521. At one end of the valve rod 521, there is a mounting seat 522. On the outer side of the mounting seat 522, there is a guide bar 523 that is slidably matched with the guide groove 511. On the outer end face of the valve rod 521, there is a mounting hole 524. By the alignment degree of the through holes 531 on each cylindrical plug 53 and the inner holes of each connecting pipe 4, the synchronous adjustment of the flow rates of each connecting pipe 4 is realized.

[0025] Please refer to Figure 3 and Figure 4, the cylindrical plug 53 is fixedly sleeved outside the valve stem 521. A through hole 531 is provided on both the cylindrical plug 53 and the valve stem 521. The driving member 54 includes a motor 541 which is fixedly embedded in the mounting hole 524. A threaded rod 542 is fixed to the output end of the motor 541. A threaded hole is provided at the center of the fixing plate 512. The threaded rod 542 is in threaded cooperation with the threaded hole of the fixing plate 512. By the operation of the motor 541 to drive the threaded rod 542 to rotate, under the threaded cooperation between the threaded rod 542 and the threaded hole of the fixing plate 512, and the sliding limit between the guide strip 523 on the outer side of the mounting seat 522 and the guide groove 511, the valve core member 52 can be driven to slide left and right in the housing 51, thereby adjusting the relative position of the cylindrical plug 53 in the housing 51.

[0026] The working principle and usage process of the present utility model are as follows: By the operation of the motor 541 to drive the threaded rod 542 to rotate, under the threaded cooperation between the threaded rod 542 and the threaded hole of the fixing plate 512, and the sliding limit between the guide strip 523 on the outer side of the mounting seat 522 and the guide groove 511, the valve core member 52 can be driven to slide left and right in the housing 51, thereby adjusting the relative position of the cylindrical plug 53 in the housing 51. Through the alignment degree between the through holes 531 on each cylindrical plug 53 and the inner holes of each connecting pipe 4, the synchronous adjustment of the flow rates of each connecting pipe 4 is realized. Furthermore, in addition to entering the plate heat exchanger 1 for heat exchange, a part of the heat exchange medium injected into the water inlet pipe 2 will directly flow out from the connecting pipe 4 into the water outlet pipe 3 without participating in the heat exchange. The flow rate of the heat exchange medium flowing through each connecting pipe 4 is adjusted by the flow controller 5 to realize the adjustment of the heat exchange rate of the plate heat exchanger 1.

[0027] The above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A control device for the heat exchange rate of a central air-conditioning plate heat exchanger, comprising a plate heat exchanger (1). One side of the plate heat exchanger (1) is provided with a water inlet pipe (2) for the inflow of a heat exchange medium and a water outlet pipe (3) for the outflow of the heat exchange medium. A plurality of connecting pipes (4) are connected between the water inlet pipe (2) and the water outlet pipe (3), and it is characterized in that, A flow controller (5) is provided on the connecting pipe (4). The flow controller (5) includes a housing (51). A slidable valve core member (52) is provided inside the housing (51). A plurality of cylindrical plugs (53) for synchronously opening and closing each connecting pipe (4) are provided on the valve core member (52). A driving member (54) for adjusting the relative position of the cylindrical plugs (53) is provided inside the housing (51).

2. The heat exchange rate control device for a central air conditioner plate heat exchanger according to claim 1, wherein A guiding groove (511) is formed inside the housing (51), and a fixing plate (512) is fixed inside the housing (51).

3. The heat exchange rate control device for a central air conditioner plate heat exchanger according to claim 2, wherein, The valve core member (52) includes a valve rod (521). A mounting seat (522) is fixed at one end of the valve rod (521). A guiding strip (523) that is slidably engaged with the guiding groove (511) is provided on the outer side of the mounting seat (522). A mounting hole (524) is formed in the outer end face of the valve rod (521).

4. A central air-conditioning plate heat exchanger heat transfer rate control device according to claim 3, characterized in that, The cylindrical plug (53) is fixedly sleeved outside the valve rod (521). A through hole (531) is formed in the cylindrical plug (53) and the valve rod (521).

5. The heat exchange rate control device for a central air conditioner plate heat exchanger according to claim 3, characterized in that, The driving member (54) includes a motor (541). The motor (541) is fixedly embedded in the mounting hole (524). A threaded rod (542) is fixed to the output end of the motor (541).

6. The heat exchange rate control device of the central air-conditioning plate heat exchanger according to claim 5, characterized in that, A threaded hole is formed in the center of the fixing plate (512). The threaded rod (542) is in threaded engagement with the threaded hole of the fixing plate (512).

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