Water mixing device capable of dynamically adjusting water temperature

Abstract

The utility model belongs to the technical field of heating, ventilation and air conditioning, and particularly relates to a water mixing device capable of dynamically adjusting water temperature, which comprises a thermal insulation EPP shell, one end of a first water pipe is communicated with a first inlet of a proportioning valve in the EPP shell, an outlet of the proportioning valve is communicated with an inlet of a water pump in the EPP shell, and an outlet of the water pump extends out of the EPP shell. The two ends of the second water pipe penetrate through the interior of the EPP shell and communicate with a second inlet of the proportioning valve through a branch pipe, the top end of the water pump is exposed out of the EPP shell, a flow valve is arranged at the water outlet end of the second water pipe, and the flow valve is in signal connection with the proportioning valve; the problems that a technician easily connects the direction of a proportional regulating valve in a wrong way during assembly and no heat preservation material exists outside a three-way proportional regulating valve or a pipeline, so that heat is easy to lose, and a large error exists between the regulated temperature and the temperature produced by a water mixing device are solved.

Description

Technical Field

[0001] The present application belongs to the field of heating, ventilation and air conditioning technology, and specifically relates to a water mixing device capable of dynamically adjusting water temperature. Background Art

[0002] The water mixing device is mainly used in the fan coil air conditioning system, and cooperates with the capillary radiation system to achieve cooling and heating by operating the water temperature; however, the current water mixing device simply transports water through a pump, a three-way proportional regulating valve and a pipeline, wherein the pump, the three-way proportional regulating valve and the pipeline are not integrated, and the three-way proportional regulating valve needs to pay attention to the direction, which is easy to connect incorrectly; and there is no insulation material on either the three-way proportional regulating valve or the outside of the pipeline, which makes it easy for heat to be lost, resulting in a large error between the regulated temperature and the temperature created by the water mixing device. Utility Model Content

[0003] The purpose of this application is to address the shortcomings of the prior art. The first water pipe, the second water pipe, the proportional control valve, and the water pump are integrated into an EPP shell, so that the water mixing device becomes a whole, which prevents technicians from connecting the proportional control valve in the wrong direction during assembly. It solves the problem that technicians are prone to connecting the proportional control valve in the wrong direction during assembly and that there is no insulation material outside the three-way proportional control valve or the pipeline, which makes heat easily lost, resulting in a large error between the regulated temperature and the temperature created by the water mixing device.

[0004] To achieve the above purpose, the technical solution of the utility model is:

[0005] A water mixing device capable of dynamically adjusting water temperature comprises a heat-insulating EPP shell, one end of a first water pipe is connected to a first inlet of a proportional control valve in the EPP shell, an outlet of the proportional control valve is connected to an inlet of a water pump in the EPP shell, the outlet of the water pump extends to the outside of the EPP shell, two ends of a second water pipe penetrate the interior of the EPP shell, two ends of the second water pipe are connected to a second inlet of the proportional control valve via a branch pipe, the top end of the water pump leaks out of the EPP shell, a flow valve is provided at the water outlet end of the second water pipe, and a signal of the flow valve is connected to the proportional control valve.

[0006] Preferably, the proportional control valve includes a cylindrical valve body and an incompletely cylindrical valve core, the valve body is provided with a valve cavity matched with the valve core, the first inlet, the second inlet, and the outlet of the proportional control valve are all located on the side wall of the valve cavity, the shape and size of the first inlet are completely equal to the shape and size of the second inlet, the shape and size of the outlet of the proportional control valve are completely the same as the shape and size of the first inlet, the line connecting the center of the first inlet and the central axis of the valve cavity is L1, the line connecting the second inlet and the central axis of the valve cavity is L2, the angle between the projection of L1 on the bottom surface of the valve cavity and the projection of L2 on the bottom surface of the valve cavity is a right angle, the central angle of the projection of the valve core on the bottom surface of the valve cavity is 90 degrees, the line connecting the center of the outlet of the proportional control valve and the central axis of the valve cavity is L3, L3 is the extension line of the angle bisector of L1 and L2, and the outlet of the proportional control valve is on the side of the central axis of the valve cavity facing away from the connecting line segment between the first inlet and the second inlet.

[0007] Preferably, the regulating handle of the proportional regulating valve passes through the outside of the EPP housing.

[0008] Preferably, a plurality of straight slots are provided on the inner bottom wall of the valve cavity around the central axis of the valve cavity, one end of the axis of the straight slot is toward the central axis of the valve cavity, and the other end is toward the side wall of the valve cavity, and a plurality of convex ridges cooperating with the straight slots are provided on the lower surface of the valve core, the upper surface of the valve core is connected to the inner top wall of the valve cavity by a spring, the cross-section of the straight slot is a triangle, and the base of the triangle is toward the top of the valve cavity.

[0009] Preferably, the connection head of the water pump is located outside the EPP housing.

[0010] Preferably, a mounting slot is provided on the outer surface of the EPP housing.

[0011] Preferably, the EPP shell includes an upper shell and a lower shell, the upper shell and the lower shell are fixed together by bolts, and mounting grooves for installing the first water pipe and the second water pipe are provided on a surface of the upper shell facing the lower shell and on a surface of the lower shell facing the upper shell, and the upper shell is provided with through holes corresponding to the proportional control valve and the water pump respectively.

[0012] Compared with the prior art, the beneficial effects of this application are:

[0013] 1. The present application integrates the first water pipe, the second water pipe, the proportional control valve, and the water pump into an EPP shell, so that the water mixing device becomes a whole, preventing technicians from connecting the proportional control valve in the wrong direction during assembly, and solving the problem that technicians are prone to connecting the proportional control valve in the wrong direction during assembly and that there is no insulation material outside the three-way proportional control valve or the pipeline, which makes it easy for heat to be lost, resulting in a large error between the regulated temperature and the temperature created by the water mixing device.

[0014] 2. In the present application, the ratio of hot water and cold water entering the proportional control valve is achieved by blocking the area of ​​the first inlet 7 and the second inlet through the angle at which the valve core rotates in the valve cavity. The setting of "the line connecting the center of the outlet of the proportional control valve and the central axis of the valve cavity is L3, and L3 is on the extension line of the angular bisector of L1 and L2" is to prevent the valve core from blocking the water outlet of the proportional control valve during rotation.

[0015] 3. The EPP housing in the present application includes an upper housing and a lower housing, which makes it easy to install the first water pipe, the second water pipe, the water pump, and the flow valve in the EPP housing. At the same time, it is also easy to open the EPP housing to check the components during maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of this application;

[0017] Figure 2 for Figure 1 Schematic diagram after removing the upper shell;

[0018] Figure 3 An exploded view of the proportional control valve in this application;

[0019] Figure 4 for Figure 3 Cross-section view of AA.

[0020] Among them, 1. the first water pipe; 2. the water pump; 3. the second water pipe; 4. the flow valve; 5. the valve body; 6. the valve core; 7. the first inlet; 8. the second inlet; 9. the straight slot; 10. the convex ridge; 11. the installation slot; 12. the upper shell; 13. the lower shell; 14. the installation groove; 15. the through hole. DETAILED DESCRIPTION

[0021] like Figure 1-4As shown, a water mixing device capable of dynamically adjusting water temperature comprises a thermally insulated EPP shell, one end of a first water pipe 1 is connected to a first inlet 7 of a proportional control valve in the EPP shell, an outlet of the proportional control valve is connected to an inlet of a water pump 2 in the EPP shell, and the outlet of the water pump 2 extends to the outside of the EPP shell, two ends of a second water pipe 3 pass through the interior of the EPP shell, two ends of the second water pipe 3 are connected to a second inlet 8 of the proportional control valve through a branch pipe, the top end of the water pump 2 leaks out of the EPP shell, a flow valve 4 is provided at the water outlet end of the second water pipe 3, and a signal of the flow valve 4 is connected to the proportional control valve.

[0022] In this embodiment, cold water enters the proportional regulating valve from the first inlet 7 through the first water pipe 1, and hot water enters the proportional regulating valve from the second inlet 8 through the second water pipe 3. The proportional regulating valve adjusts the ratio between the first inlet 7 and the second inlet 8 as needed to mix the cold water and the hot water, so that the temperature of the water entering the water pump 2 from the outlet of the proportional regulating valve meets the preset temperature value; wherein, the PP shell is heat-insulating, that is, it prevents the water in the proportional regulating valve from exchanging heat with the outside world and causing temperature errors, and since the top of the water pump 2 leaks out of the EPP shell, the technician can judge the water inlet and outlet according to the position of the water pump 2 on the EPP shell (the water pump 2 is far from the water inlet and close to the water outlet, because the water pump 2 and the water inlet), so it is convenient for the staff to distinguish the water inlet and the water outlet. The setting of the flow valve 4 makes it possible for the staff to distinguish the water inlet and the water outlet. When the demand for hot water is relatively small, the second inlet 8 is adjusted to a relatively small value, and the proportional control valve transmits a signal to the flow valve 4, and the valve of the flow valve 4 is opened more, and the excess water flows out from the flow valve 4 and returns to the hot water source, thereby avoiding excessive pressure at the second inlet 8; when the demand for hot water is relatively large, the proportional control valve transmits a signal to the flow valve 4, and the valve of the flow valve 4 is opened more, so that the second inlet 8 has a larger water pressure, which is convenient for hot water to enter the proportional control valve from the second inlet 8 and then enter the water pump 2, and the excess hot water also flows out from the flow valve 4 and returns to the hot water source. The first water pipe 1, the second water pipe 3, the water pump 2, and the proportional control valve are all integrated in an EPP shell, which is convenient for technicians to assemble during assembly.

[0023] As a preferred embodiment, the proportional control valve comprises a cylindrical valve body 5 and an incompletely cylindrical valve core 6, wherein a valve cavity 16 cooperating with the valve core 6 is provided in the valve body 5, the first inlet 7, the second inlet 8, and the outlet of the proportional control valve are all located on the side wall of the valve cavity 16, the shape and size of the first inlet 7 are exactly the same as the shape and size of the second inlet 8, the shape and size of the outlet of the proportional control valve are exactly the same as the shape and size of the first inlet 7, the line connecting the center of the first inlet 7 and the central axis of the valve cavity 16 is L1, the second inlet 8 The line connecting the center axis of the valve cavity 16 is L2, the angle between the projection of L1 on the bottom surface of the valve cavity 16 and the projection of L2 on the bottom surface of the valve cavity 16 is a right angle, the center angle of the projection of the valve core 6 on the bottom surface of the valve cavity 16 is 90 degrees, the line connecting the center of the outlet of the proportional control valve and the center axis of the valve cavity 16 is L3, and L3 is on the extension line of the angle bisector of L1 and L2. The outlet of the proportional control valve is on the side of the center axis of the valve cavity 16 facing away from the connecting line segment between the first inlet 7 and the second inlet 8. After such a setting, the angle of rotation of the valve core 6 in the valve cavity 16 is to achieve the area of ​​blocking the first inlet 7 and the second inlet 8 to achieve the ratio of hot water and cold water entering the proportional control valve. The setting of "the line connecting the center of the outlet of the proportional control valve and the center axis of the valve cavity 16 is L3, and L3 is on the extension line of the angle bisector of L1 and L2" is to prevent the valve core 6 from blocking the water outlet of the proportional control valve during the rotation process.

[0024] As a preferred mode, the regulating handle 17 of the proportional regulating valve is extended outside the EPP housing. After such arrangement, one advantage is that it is convenient to drive the regulating handle 17 with the output shaft of the servo motor to realize the ratio of hot water to cold water in the proportional regulating valve, and another advantage is that it is convenient for technicians to distinguish the water inlet and water outlet of the whole device, that is, the side of the EPP housing facing the regulating handle 17 is the water inlet of the whole device, and the side of the EPP housing facing the water pump is the water outlet of the whole device.

[0025] As a preferred mode, a plurality of straight slots 9 are provided on the inner bottom wall of the valve cavity 16 around the central axis of the valve cavity 16, one end of the axis of the straight slot 9 faces the central axis of the valve cavity 16, and the other end faces the side wall of the valve cavity 16, a plurality of convex ridges 10 cooperating with the straight slots 9 are provided on the lower surface of the valve core 6, the upper surface of the valve core 6 is connected to the inner top wall of the valve cavity 16 by a spring, the cross section of the straight slot 9 is a triangle, and the bottom side of the triangle faces the top of the valve cavity 16. In this way, the valve core 6 is prevented from slipping in the valve body 5 by the cooperation of the 9 convex ridges 10 of the straight slots and the spring.

[0026] As a preferred mode, the connection head of the water pump 2 is located outside the EPP housing. This arrangement facilitates the electrical connection of the water pump 2 to achieve control of the water pump 2.

[0027] As a preferred embodiment, an installation slot 11 is provided on the outer surface of the EPP housing. In actual use, a mainboard may be used to control the water pump 2 and the proportional control valve, so the installation slot 11 is provided for the convenience of installing the mainboard (controller). As a preferred embodiment, the EPP housing includes an upper shell 12 and a lower shell 13, and the upper shell 12 and the lower shell 13 are fixed together by bolts. A mounting groove 14 for installing the first water pipe 1 and the second water pipe 3 is provided on the surface of the upper shell 12 facing the lower shell 13 and on the surface of the lower shell 13 facing the upper shell 12, and the upper shell 12 is provided with through holes 15 corresponding to the proportional control valve and the water pump 2, respectively. This arrangement facilitates the installation of the first water pipe 1, the second water pipe 3, the water pump 2, and the flow valve 4 in the EPP housing. At the same time, it is also convenient to open the EPP housing to check the various components during maintenance.

Claims

1. A water mixing device capable of dynamically adjusting water temperature, characterized in that: The invention comprises an EPP shell with thermal insulation, one end of a first water pipe (1) is connected to a first inlet (7) of a proportional control valve in the EPP shell, the outlet of the proportional control valve is connected to an inlet of a water pump (2) in the EPP shell, the outlet of the water pump (2) extends outside the EPP shell, the two ends of a second water pipe (3) penetrate the interior of the EPP shell, the two ends of the second water pipe (3) are connected to a second inlet (8) of the proportional control valve through a branch pipe, the top end of the water pump (2) leaks out of the EPP shell, and a flow valve (4) is provided at the water outlet end of the second water pipe (3), the signal of the flow valve (4) is connected to the proportional control valve.

2. A water mixing device capable of dynamically adjusting water temperature according to claim 1, characterized in that: The proportional control valve comprises a cylindrical valve body (5) and an incomplete cylindrical valve core (6); a valve cavity (16) matching with the valve core (6) is arranged in the valve body (5); the first inlet (7), the second inlet (8), and the outlet of the proportional control valve are all located on the side wall of the valve cavity (16); the shape and size of the first inlet (7) are completely equal to the shape and size of the second inlet (8); the shape and size of the outlet of the proportional control valve are completely the same as the shape and size of the first inlet (7); the line connecting the center of the first inlet (7) and the central axis of the valve cavity (16) is L1; the second inlet (8) is The line connecting the center axis of the valve cavity (16) and the valve core (16) is L2, the angle between the projection of L1 on the bottom surface of the valve cavity (16) and the projection of L2 on the bottom surface of the valve cavity (16) is a right angle, the center angle of the projection of the valve core (6) on the bottom surface of the valve cavity (16) is 90 degrees, the center of the outlet of the proportional control valve and the line connecting the center axis of the valve cavity (16) is L3, and L3 is on the extension line of the angular bisector of L1 and L2, and the outlet of the proportional control valve is on the side of the center axis of the valve cavity (16) facing away from the connecting line segment between the first inlet (7) and the second inlet (8).

3. A water mixing device capable of dynamically adjusting water temperature according to claim 2, characterized in that: The regulating handle (17) of the proportional regulating valve penetrates outside the EPP housing.

4. A water mixing device capable of dynamically adjusting water temperature according to claim 2, characterized in that: A plurality of straight slots (9) are provided on the inner bottom wall of the valve cavity (16) around the central axis of the valve cavity (16), one end of the axis of the straight slot (9) faces the central axis of the valve cavity (16), and the other end faces the side wall of the valve cavity (16), and a plurality of convex ridges (10) matching the straight slots (9) are provided on the lower surface of the valve core (6), and the upper surface of the valve core (6) is connected to the inner top wall of the valve cavity (16) by a spring, and the cross-section of the straight slot (9) is a triangle, and the base of the triangle faces the top of the valve cavity (16).

5. A water mixing device capable of dynamically adjusting water temperature according to claim 1, characterized in that: The connection head of the water pump (2) is located outside the EPP housing.

6. A water mixing device capable of dynamically adjusting water temperature according to claim 1, characterized in that: An installation slot (11) is provided on the outer surface of the EPP housing.

7. A water mixing device capable of dynamically adjusting water temperature according to claim 1, characterized in that: The EPP housing comprises an upper shell (12) and a lower shell (13); the upper shell (12) and the lower shell (13) are fixed together by bolts; a surface of the upper shell (12) facing the lower shell (13) and a surface of the lower shell (13) facing the upper shell (12) are both provided with mounting grooves (14) for mounting the first water pipe (1) and the second water pipe (3); and the upper shell (12) is provided with through holes (15) corresponding to the proportional control valve and the water pump (2), respectively.

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