Target structure, flow switch and heat pump water system

Abstract

This invention provides a target plate structure, a flow switch, and a heat pump water system, relating to the field of flow switch technology. It solves the technical problem in existing technologies where different flow switches are required for water systems with different pipe diameters and cooling capacities, resulting in low applicability of the flow switches. The target plate structure is installed inside the heat exchange circulation pipe connecting the hot water unit and the water tank at the outlet of the hot water unit. It includes a first target plate, a second target plate, and a target plate adjustment assembly. The first target plate and / or the second target plate are connected to the target plate adjustment assembly, which allows the first target plate and / or the second target plate to move in a direction perpendicular to the axis of the heat exchange circulation pipe, thereby changing their installation position within the heat exchange circulation pipe. This invention is applicable to heat exchange circulation pipes of different diameters, improving the applicability of the flow switch.

Description

Technical Field

[0001] This invention relates to the field of water flow switch technology, and in particular to a target structure, a water flow switch, and a heat pump water system. Background Technology

[0002] Currently, multi-functional water heaters generally have heating, hot water, and cooling functions. User-side equipment includes domestic hot water tanks, fan coil units, and underfloor heating coils. The switching between heating, cooling, and hot water production is achieved via an electric three-way valve. During the heating season, when switching from heating to hot water production, the multi-functional water heater circulates hot water from the heating system to the tank coils. At this time, the user-side heating terminal equipment (fan coil units, underfloor heating coils) stops heat exchange circulation. The electric three-way valve will only activate and switch back to heating circulation once the water temperature in the domestic hot water tank reaches the set target temperature.

[0003] The large-capacity multi-functional water heater is the first water heater product launched on the market to date; previously, most were small-capacity multi-functional water heaters. The difference between the two lies in the fact that the small-capacity multi-functional water heater, due to its smaller cooling capacity, can be flexibly configured for various European homes and villas, essentially a single unit for a single purpose, with a relatively independent water system and flexible configuration options; while the large-capacity model must consider multiple uses, making the water system relatively more complex. Different flow switches are required for water pipes of different diameters and water systems with different cooling capacities, resulting in poor applicability of the flow switches and increased piping costs. Summary of the Invention

[0004] The purpose of this invention is to provide a target structure, a flow switch, and a heat pump water system to solve the technical problem in the prior art that different flow switches need to be selected for water systems with different pipe diameters and different cooling capacities, resulting in low applicability of the flow switches. The various technical effects of the preferred technical solutions provided by this invention are described in detail below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] According to a first aspect of the present invention, a target plate structure is provided, disposed inside a heat exchange circulation pipeline connecting the hot water unit and a water tank at the outlet of a hot water unit. The target plate structure includes a first target plate, a second target plate, and a target plate adjustment assembly, wherein:

[0007] The first target plate and / or the second target plate are connected to the target plate adjustment assembly. The target plate adjustment assembly can drive the first target plate and / or the second target plate to move in a direction perpendicular to the axis of the heat exchange circulation pipeline to change the installation position of the first target plate and / or the second target plate in the heat exchange circulation pipeline.

[0008] Furthermore, the target adjustment assembly is disposed between the first target and the second target, and the target adjustment assembly can drive the first target or the second target to move.

[0009] Furthermore, the target adjustment assembly includes a driving part and a transmission connection part. The driving part is fixed between the first target and the second target, and the output shaft of the driving part is connected to the first target or the second target through the transmission connection part.

[0010] Furthermore, the transmission connection includes a gear shaft, which is fixedly connected to the output shaft of the drive unit. The first target plate or the second target plate has a meshing part that cooperates with the gear shaft. The rotation of the output shaft of the drive unit can drive the first target plate or the second target plate to move through the gear shaft to change the relative position of the two target plates.

[0011] Furthermore, the target plate adjustment assembly is connected to the eccentric position of the first target plate or the second target plate and can drive the first target plate or the second target plate to move in a direction perpendicular to the axis of the heat exchange circulation pipeline to change the relative position of the two target plates.

[0012] Furthermore, a first target plate and a second target plate are sequentially arranged along the water flow direction in the heat exchange circulation pipeline, and a pressure detection unit is provided on at least the first target plate.

[0013] According to a second aspect of the present invention, a flow switch is provided, comprising the target structure described in any of the preceding claims.

[0014] Furthermore, the flow switch also includes a switch body and an assembly height adjustment assembly. The target structure is mounted on the switch body via the assembly height adjustment assembly. The assembly height adjustment assembly drives the target structure to move to change the relative position of the target structure with respect to the switch body in the vertical direction.

[0015] Furthermore, the assembly height adjustment component includes a power unit and an elastic adjustment unit. The power unit is disposed above the target plate adjustment component, and the output end of the power unit is connected to the elastic adjustment unit. The end of the elastic adjustment unit away from the power unit is disposed in the water flow switch cavity inside the switch body.

[0016] Furthermore, the elastic adjustment part includes a first target rod part, an elastic part, and a second target rod part. The elastic part is disposed between the first target rod part and the second target rod part. The first target rod part is connected to the power part, and the second target rod part is disposed inside the switch body.

[0017] Furthermore, the power unit is an electric push rod or a hydraulic push rod, and the push rod shaft of the electric push rod or the hydraulic push rod is connected to the elastic adjustment unit.

[0018] Furthermore, the switch body includes a main body portion and a pipeline connection portion. The main body portion is fixedly connected to the pipeline connection portion, and the pipeline connection portion is located below the main body portion. The water flow switch is detachably installed on the heat exchange circulation pipeline through the pipeline connection portion.

[0019] According to a third aspect of the present invention, a heat pump water heater system is provided, including a hot water unit, a water tank, and a flow switch, wherein the flow switch is disposed on a heat exchange circulation pipeline between the hot water unit and the water tank.

[0020] Furthermore, a water pump and a first three-way valve are also provided on the heat exchange circulation pipeline. The water flow switch is located at the outlet of the hot water unit, and the water pump is connected between the water flow switch and the first three-way valve. The first outlet of the first three-way valve is connected to the building user group through the heat exchange circulation pipeline, and the second outlet of the first three-way valve is connected to the heat exchange coil in the water tank.

[0021] Furthermore, the water tank includes a water tank body and a heat exchange coil. The heat exchange coil is disposed inside the water tank body. The inlet of the heat exchange coil is connected to the second outlet of the first three-way valve, and the outlet of the heat exchange coil is connected to the second three-way valve. The other two ports of the second three-way valve are respectively connected to the hot water unit and the building user group.

[0022] The target plate structure provided by this invention is installed inside the heat exchange circulation pipeline connecting the hot water unit and the water tank at the outlet of the hot water unit. Compared with the prior art, this target plate structure is provided with two target plates. The target plate adjustment component can drive the first target plate and / or the second target plate to move in a direction perpendicular to the axis of the heat exchange circulation pipeline, thereby changing the installation position of the first target plate and / or the second target plate in the heat exchange circulation pipeline. It can be used for heat exchange circulation pipelines with different pipe diameters, improving the applicability of the flow switch. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is the first structural schematic diagram of the water flow switch provided in the embodiment of the present invention;

[0025] Figure 2 yes Figure 1 Enlarged view of section A;

[0026] Figure 3 This is the second structural schematic diagram of the water flow switch provided in an embodiment of the present invention;

[0027] Figure 4 yes Figure 3 Enlarged view of section B;

[0028] Figure 5 This is a partial structural schematic diagram of the water flow switch provided in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the heat pump water system provided in an embodiment of the present invention.

[0030] Reference numerals: 1. Flow switch; 11. Switch body; 111. Main body; 112. Pipe connection; 2. Heat exchange circulation pipeline; 3. Hot water unit; 4. Water tank; 41. Water tank body; 42. Heat exchange coil; 5. Target structure; 51. First target; 52. Second target; 53. Drive unit; 54. Transmission connection unit; 541. Gear shaft; 542. Meshing part; 6. Water pump; 7. First three-way valve; 8. Second three-way valve; 9. Building user group; 10. Assembly height adjustment component; 101. Elastic adjustment part; 102. First target rod. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0032] In the description of this invention, it should be understood that the terms "center," "length," "width," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "side," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0033] Example 1

[0034] See Figures 1 to 4 This embodiment provides a target structure 5, which is disposed inside the heat exchange circulation pipe 2 at the outlet of the hot water unit 3 for connecting the hot water unit 3 and the water tank 4.

[0035] The target structure 5 provided in this embodiment includes a first target 51, a second target 52, and a target adjustment assembly. The first target 51 and / or the second target 52 are connected to the target adjustment assembly. The target adjustment assembly can drive the first target 51 and / or the second target 52 to move in a direction perpendicular to the axis of the heat exchange circulation pipeline 2 to change the installation position of the first target 51 and / or the second target 52 in the heat exchange circulation pipeline 2.

[0036] As an optional implementation of this embodiment, the target adjustment assembly is disposed between the first target 51 and the second target 52, and the target adjustment assembly can drive the first target 51 or the second target 52 to move.

[0037] In a specific implementation of an embodiment of the present invention, the target adjustment assembly includes a drive unit 53 and a transmission connection unit 54. The drive unit 53 is fixed between the first target 51 and the second target 52, and the output shaft of the drive unit 53 is connected to the first target 51 or the second target 52 through the transmission connection unit 54.

[0038] like Figure 4 As shown, the transmission connection part 54 in this embodiment includes a gear shaft 541, which is fixedly connected to the output shaft of the drive part 53. The first target piece 51 or the second target piece 52 has a meshing part 542 that cooperates with the gear shaft 541. The rotation of the output shaft of the drive part 53 can drive the first target piece 51 or the second target piece 52 to move through the gear shaft 541 to change the relative position of the two target pieces.

[0039] In this illustrative embodiment, the first target piece 51 is a movable target piece, and the second target piece 52 is a fixed target piece. The drive unit 53 uses a motor with a high waterproof rating. The motor is positioned between the first target piece 51 and the second target piece 52. The second target piece 52 is fixedly connected to the motor housing. The output shaft of the motor is connected to the first target piece 51 via a gear shaft 541. When the output shaft of the motor rotates, it drives the gear shaft 541 to rotate. The gear shaft 541 can mesh with the meshing part 542 on the first target piece 51, thereby causing the first target piece 51 to move relative to the second target piece 52. It should be noted that in this embodiment, the meshing part 542 is located at an eccentric position on the first target piece 51. The first target piece 51 and the second target piece 52 are circular, meaning that the meshing part 542 is located on the first target piece 51 at a position away from its center. Figure 3The meshing part 542 shown is located on the first target plate 51 near its edge. When the output shaft of the motor rotates, it can drive the first target plate 51 to move in a direction perpendicular to the axis of the heat exchange circulation pipeline 2. In other words, the first target plate 51 can move relative to the second target plate 52, thereby changing the relative position of the first target plate 51 and the second target plate 52.

[0040] Furthermore, the first target plate 51 and the second target plate 52 are arranged sequentially along the water flow direction within the heat exchange circulation pipeline 2. In this embodiment, at least the first target plate 51 is provided with a pressure detection unit, which is a pressure sensor. When the water flow switch 1 is installed in the heat exchange circulation pipeline 2, the target plate structure 5 is located within the heat exchange circulation pipeline 2, and the force exerted by the water flow on the target plate can be detected by the pressure sensor.

[0041] When the water flow rate in the pipe is too high, the pressure on the first target plate 51 is high, while the central water pressure is low, indicating that the water system is low. Water is replenished by adjusting the water pump 6. When the water flow rate in the pipe is too low, the pressure on the first target plate 51 is low, while the central water pressure is high, indicating that the water capacity in the inner pipe is large. The safety valve (not shown in the figure) located on the water pump outlet side is adjusted to output redundant water.

[0042] Example 2

[0043] This embodiment provides a flow switch 1, including the target structure 5 described above. When the flow switch 1 is installed in a hot circulation pipeline, the target structure 5 is located inside the hot circulation pipeline.

[0044] like Figure 1 As shown, the flow switch 1 also includes a switch body 11, which has a cavity structure inside, serving as the flow switch 1 cavity. Considering that when replacing heat exchange pipelines with different diameters, especially those with significant diameter differences, there may be height issues when installing the flow switch 1, a height adjustment assembly 10 is also provided in the flow switch 1 in this embodiment to better facilitate its application on heat exchange circulation pipelines 2 with different diameters. The target structure 5 is mounted on the switch body 11 via the height adjustment assembly 10. The height adjustment assembly 10 moves the target structure 5 to change its relative position to the switch body 11 in the vertical direction. Through the cooperation of the height adjustment assembly 10 and the target adjustment assembly, it can adapt to more heat exchange circulation pipelines 2 with different diameters, providing a wider control range.

[0045] As a preferred or optional embodiment, the assembly height adjustment component 10 includes a power unit and an elastic adjustment unit 101. The power unit is disposed above the target adjustment component, and the output end of the power unit is connected to the elastic adjustment unit 101. The end of the elastic adjustment unit 101 away from the power unit is disposed in the water flow switch 1 cavity inside the switch body 11.

[0046] For details, see Figure 5 In this embodiment, the elastic adjustment unit 101 includes a first target rod portion 102, an elastic portion, and a second target rod portion. The elastic portion is disposed between the first target rod portion 102 and the second target rod portion. The first target rod portion 102 is connected to the power unit, and the second target rod portion is disposed within the switch body 11. The power unit can be an electric actuator or a hydraulic actuator, and the actuator shaft of the electric actuator or hydraulic actuator is connected to the elastic adjustment unit 101. In this embodiment, the power unit can be fixed to the housing of the drive unit 53 in the target structure 5, and the elastic adjustment unit 101 uses a spring element.

[0047] like Figure 3 As shown, the switch body 11 includes a main body portion 111 and a pipe connection portion 112. The main body portion 111 and the pipe connection portion 112 are fixedly connected, and the pipe connection portion 112 is located below the main body portion 111. The flow switch 1 is detachably mounted on the heat exchange circulation pipe 2 through the pipe connection portion 112. In actual use, there will be a mounting portion on the heat exchange circulation pipe 2 that cooperates with the flow switch 1. The flow switch 1 is connected to the mounting portion through the pipe connection portion 112. Optionally, the pipe connection portion 112 and the mounting portion are connected by threads, which is convenient for disassembly and assembly.

[0048] Example 3

[0049] This embodiment provides a heat pump water system, including a hot water unit 3, a water tank 4, and a flow switch 1 as described in the above embodiment. The flow switch 1 is installed on the heat exchange circulation pipeline 2 between the hot water unit 3 and the water tank 4.

[0050] See Figure 6 The heat exchange circulation pipeline 2 is also equipped with a water pump 6 and a first three-way valve 7. A flow switch 1 is located at the outlet of the hot water unit 3, and the water pump 6 is connected between the flow switch 1 and the first three-way valve 7. Of course, in this embodiment, the flow switch 1 can also be located between the water pump 6 and the first three-way valve 7; this is not a limitation. The first outlet of the first three-way valve 7 is connected to the building user group 9 through the heat exchange circulation pipeline 2, and the second outlet of the first three-way valve 7 is connected to the heat exchange coil 42 in the water tank 4. The flow switch 1 provided by this invention, in conjunction with the water pump 6 for control, unit mode operation, and switching, can achieve stable operation of the entire water system process, realize multi-range regulation, and improve the applicability of the flow switch 1.

[0051] In addition, the water tank 4 includes a water tank body 41 and a heat exchange coil 42. The heat exchange coil 42 is located inside the water tank body 41. The inlet of the heat exchange coil 42 is connected to the second outlet of the first three-way valve 7, and the outlet of the heat exchange coil 42 is connected to the second three-way valve 8. The other two ports of the second three-way valve 8 are connected to the hot water unit 3 and the building user group 9, respectively. Figure 6The hot water unit 3 has two hot water units. The number of hot water units is not limited and can be determined based on actual conditions. Multiple hot water units are connected to a water tank 4. A water coil 42 is built into the water tank 4 as a heat exchange coil. Water flow is supplied to the water tank 4, and a flow switch 1 is installed at the outlet of the hot water unit 3. A three-way valve is used to switch the mode and the usage mode of the water tank 4. Additionally, the main line is connected to the building's user group 9. Figure 6 The unit consists of a compressor, a four-way valve, an evaporator, a condenser, etc., and has the same structure as existing water heaters, so it will not be described in detail here.

[0052] The specific features, structures, or characteristics described in this specification may be combined in any suitable manner in one or more embodiments or examples.

[0053] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A target structure, characterized in that, The target plate structure, located inside the heat exchange circulation pipe connecting the hot water unit and the water tank at the outlet of the hot water unit, includes a first target plate, a second target plate, and a target plate adjustment assembly, wherein: The first target plate and / or the second target plate are connected to the target plate adjustment assembly. The target plate adjustment assembly can drive the first target plate and / or the second target plate to move in a direction perpendicular to the axis of the heat exchange circulation pipeline to change the installation position of the first target plate and / or the second target plate in the heat exchange circulation pipeline. The target adjustment assembly includes a drive unit and a transmission connection unit. The drive unit is fixed between the first target and the second target, and the output shaft of the drive unit is connected to the first target or the second target through the transmission connection unit. The transmission connection includes a gear shaft, which is fixedly connected to the output shaft of the drive unit. The first target plate or the second target plate has a meshing part that cooperates with the gear shaft. The rotation of the output shaft of the drive unit can drive the first target plate or the second target plate to move through the gear shaft to change the relative position of the two target plates.

2. The target structure according to claim 1, characterized in that, The target adjustment assembly is disposed between the first target and the second target, and the target adjustment assembly can drive the first target or the second target to move.

3. The target structure according to claim 1, characterized in that, The target adjustment assembly is connected to the eccentric position of the first target or the second target and can drive the first target or the second target to move in a direction perpendicular to the axis of the heat exchange circulation pipeline to change the relative position of the two target pieces.

4. The target structure according to claim 1, characterized in that, A first target plate and a second target plate are sequentially arranged along the water flow direction in the heat exchange circulation pipeline, and a pressure detection unit is provided on at least the first target plate.

5. A flow switch, characterized in that, Includes the target structure as described in any one of claims 1 to 4.

6. The flow switch according to claim 5, characterized in that, The water flow switch also includes a switch body and an assembly height adjustment component. The target structure is mounted on the switch body via the assembly height adjustment component. The assembly height adjustment component drives the target structure to move to change the relative position of the target structure with respect to the switch body in the vertical direction.

7. The flow switch according to claim 6, characterized in that, The assembly height adjustment component includes a power unit and an elastic adjustment unit. The power unit is located above the target plate adjustment component, and the output end of the power unit is connected to the elastic adjustment unit. The end of the elastic adjustment unit away from the power unit is located in the water flow switch cavity inside the switch body.

8. The flow switch according to claim 7, characterized in that, The elastic adjustment part includes a first target rod part, an elastic part, and a second target rod part. The elastic part is disposed between the first target rod part and the second target rod part. The first target rod part is connected to the power part, and the second target rod part is disposed inside the switch body.

9. The flow switch according to claim 7, characterized in that, The power unit is an electric push rod or a hydraulic push rod, and the push rod shaft of the electric push rod or the hydraulic push rod is connected to the elastic adjustment unit.

10. The flow switch according to claim 6, characterized in that, The switch body includes a main body and a pipeline connection part. The main body and the pipeline connection part are fixedly connected, and the pipeline connection part is located below the main body. The water flow switch is detachably installed on the heat exchange circulation pipeline through the pipeline connection part.

11. A heat pump water system, characterized in that, It includes a hot water unit, a water tank, and a flow switch as described in any one of claims 5 to 10, wherein the flow switch is disposed on the heat exchange circulation pipeline between the hot water unit and the water tank.

12. The heat pump water system according to claim 11, characterized in that, The heat exchange circulation pipeline is also equipped with a water pump and a first three-way valve. The water pump is located at the outlet of the hot water unit and the flow switch is connected between the water pump and the first three-way valve. The first outlet of the first three-way valve is connected to the building user group through the heat exchange circulation pipeline, and the second outlet of the first three-way valve is connected to the heat exchange coil in the water tank.

13. The heat pump water system according to claim 12, characterized in that, The water tank includes a tank body and a heat exchange coil. The heat exchange coil is located inside the tank body. The inlet of the heat exchange coil is connected to the second outlet of the first three-way valve, and the outlet of the heat exchange coil is connected to the second three-way valve. The other two ports of the second three-way valve are respectively connected to the hot water unit and the building user group.

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