Secondary electrothermal actuation device based on phase change material and method of use thereof

Abstract

The application provides a secondary electric heating execution device based on a phase change material, which comprises a knob, a lifting nut, a guide shell, a lifting slide, a shell base, a connecting slide and a propulsion assembly. The lifting screw of the knob is connected with the lifting nut, the boss of the lifting nut is connected with the hook of the lifting slide, the lifting slide of the lifting slide is connected with the lifting block of the guide shell, and the reset spring is located between the stop shoulder of the lifting slide and the positioning boss of the guide shell. The buckle of the guide shell is connected with the buckle hole of the shell base, the buckling claw of the connecting slide is connected with the clamping groove of the lifting slide, and the valve rod clamping piece of the connecting slide is connected with the valve rod and the valve core. The secondary propulsion assembly is located in the interior of the lifting slide, and the primary propulsion assembly is located in the mounting column hole of the shell base. The application adopts different on-off control of the propulsion assembly under different working conditions, so that the room temperature can quickly reach the predetermined temperature. The application not only can accurately reach the predetermined temperature, but also improves the service life of the execution device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of controlling water distribution integrator branch valve, in particular to a two-stage electric heating execution device based on phase change material and a use method thereof. BACKGROUND

[0002] In the current traditional heating control system, the hot water flow is controlled by opening and closing the valve of the water distribution integrator, so as to reach the predetermined temperature of the temperature controller. When the indoor temperature approaches the predetermined temperature of the temperature controller, the single-stage execution device can only reach the predetermined temperature by repeatedly opening and closing the valve. However, the stroke of the single-stage execution device is large, so the hot water flow is large, which usually makes the indoor temperature higher or lower than the predetermined temperature. This not only reduces the service life of the actuator, but also reduces the temperature accuracy of the actuator.

[0003] Based on the above problems, the present application provides a two-stage electric heating execution device with manual and automatic functions. Manual control is generally used for maintenance and water test of the heating system. When automatic control is performed, the actuator is divided into two stages, i.e. a first-stage pushing assembly and a second-stage paraffin pushing assembly. When the temperature approaches the predetermined temperature of the temperature controller, the temperature controller gives the second-stage pushing assembly a power-off state. At this time, the paraffin is in an expanded state, and under the action of the return spring, the second-stage pushing assembly slowly returns to the initial state, and the valve is in a completely closed state, so that no hot water flows into the room, and the temperature reaches the predetermined temperature. When the room temperature and the predetermined temperature are close, the opening degree of the valve is small, which can effectively control the hot water flow rate.

[0004] The current execution device repeatedly opens and closes the pushing assembly when approaching the predetermined temperature, and controls the hot water flow. Since the stroke of the single-stage pushing assembly is large, the control of the hot water flow cannot achieve the expected effect, and the indoor temperature is always higher or lower than the predetermined temperature. In addition, the repeated opening and closing of the pushing assembly can seriously reduce the service life of the actuator. Compared with the current actuator, the two-stage execution device of the present application only needs to open and close the second-stage pushing assembly once to reach the predetermined temperature. Not only can the predetermined temperature be accurately reached, but also the temperature accuracy is high, and the service life of the actuator is greatly improved. SUMMARY

[0005] In view of the problems in the prior art, the application provides a two-stage electric heating execution device based on a phase change material and a use method thereof, which has manual control and automatic control. The manual control is achieved by rotating a knob, driving a lifting nut to drive a lifting slide to move axially along a lifting slider, thereby driving a connecting slide to move axially, so that a valve core moves axially, and the opening and closing of a valve in a water distribution integrator are completed. The automatic control is achieved by controlling the on-off of a two-stage cylindrical electric heating plate and a one-stage cylindrical electric heating plate to control the expansion and solidification of paraffin in a filling cylinder, respectively, so that a one-stage sealing plug, a two-stage filling cylinder, a one-stage filling cylinder or a push rod moves axially, respectively, to control the opening size of the valve in the water distribution integrator, the room temperature reaches the predetermined temperature more quickly, the temperature precision is higher, and the service life of the execution device is improved.

[0006] The application provides a two-stage electric heating execution device based on phase change material, which comprises a protective cover, a knob, a lifting nut, a guide shell, a lifting slide, a shell base, a connecting slide, a two-stage propulsion assembly, a one-stage propulsion assembly, a nut and a valve cover. The lifting screw of the knob is connected with the middle part of the lifting nut, the first end of the positioning edge of the knob is connected with the close-in part of the protective cover, the second end of the positioning edge of the knob is connected with the positioning boss of the guide shell, the positioning card of the protective cover is connected with the annular boss of the shell base, the lifting nut is located in the interior of the lifting slide, the boss of the lifting nut is connected with the claw hook of the lifting slide, the lifting slide is located in the interior of the guide shell, the lifting slide groove of the lifting slide is connected with the lifting slide block of the guide shell, a reset spring is located on the outer wall of the lifting slide, the reset spring is located between the blocking shoulder of the lifting slide and the annular flange of the guide shell. The buckle of the guide shell is connected with the buckle hole of the shell base, the connecting slide is located in the interior of the shell base, the buckling claw of the connecting slide is connected with the through slot of the shell base and the card slot of the lifting slide, the valve rod clamping piece of the connecting slide is connected with the first end of the valve rod, the second end of the valve rod is connected with the middle part of the valve cover and the valve core, the clamping claw of the shell base is connected with the screw thread close-in part of the nut, the lower end surface of the clamping claw of the shell base is in contact with the base reference surface of the valve cover, the lower end of the valve cover is connected with the mounting end of the water distribution integrator, and the upper end of the valve cover is connected with the internal screw thread of the nut. The two-stage propulsion assembly is located in the interior of the lifting slide, the one-stage propulsion assembly is located in the mounting column hole of the shell base, and the two-stage propulsion assembly comprises a push rod, a two-stage sealing plug, a two-stage sealing ring, a two-stage cylindrical electric heating plate and a two-stage filling cylinder. The first end of the push rod is connected with the push rod blocking plate of the lifting slide, the second end of the push rod is connected with the middle part of the two-stage sealing plug, the outer wall mounting end of the two-stage sealing plug is connected with the upper end of the inner wall of the two-stage filling cylinder, the two-stage sealing ring is located on the boss of the inner wall of the two-stage filling cylinder, the lower end of the inner wall of the two-stage filling cylinder is provided with a paraffin cavity, and the two-stage cylindrical electric heating plate is located at the lower end of the outer wall of the two-stage filling cylinder. The one-stage propulsion assembly comprises a one-stage sealing plug, a one-stage sealing ring, a one-stage filling cylinder, a one-stage cylindrical electric heating plate and a booster protective shell. The mounting end of the two-stage filling cylinder is connected with the middle part of the one-stage sealing plug and the one-stage sealing ring, the outer wall mounting end of the one-stage sealing plug is connected with the upper end of the inner wall of the one-stage filling cylinder, the one-stage sealing ring is located on the boss of the inner wall of the one-stage filling cylinder, the lower end of the inner wall of the one-stage filling cylinder is provided with a paraffin cavity, paraffin is located in the interior of the paraffin cavity, the one-stage cylindrical electric heating plate is located at the lower end of the outer wall of the one-stage filling cylinder, the one-stage filling cylinder is located in the interior of the booster protective shell, and the upper end of the booster protective shell is connected with the hexagonal boss of the one-stage sealing plug.

[0007] Preferably, the upper end of the protective cover is provided with a closing portion, the lower end of the protective cover is uniformly provided with positioning clamps in the circumferential direction, the positioning clamps are distributed at intervals of 90 degrees on the lower end of the protective cover; the lower end of the knob is provided with a positioning rim on the outside, the center of the inside of the knob is provided with a lifting screw rod, the inside of the screw cap is provided with an internal thread, and the upper end of the screw cap is provided with a screw cap closing portion in the circumferential direction.

[0008] Preferably, the inner wall of the upper end of the guide shell is provided with a lifting sliding block, the outer wall of the upper end of the guide shell is provided with an annular flange, the outer wall of the lower end of the guide shell is provided with a positioning boss, the positioning boss is uniformly provided with buckles in the circumferential direction on the positioning side, and the lifting sliding block and the positioning boss are respectively distributed at intervals of 120 degrees on the circumference of the guide shell.

[0009] Preferably, the upper end of the lifting sliding seat is provided with a claw hook in the circumferential direction, the outer wall of the claw hook is provided with a lifting sliding groove, the inside of the lifting sliding seat is provided with a push rod baffle, the lower end of the lifting sliding seat is provided with a shoulder in the circumferential direction, the shoulder is uniformly provided with a clamping groove in the circumferential direction, the claw hook is distributed at intervals of 60 degrees on the circumference of the upper end of the lifting sliding seat, and the lifting sliding groove is distributed at intervals of 120 degrees on the circumference of the upper end of the lifting sliding seat.

[0010] Preferably, the upper end of the connecting plate of the shell base is uniformly provided with a vertical plate in the circumferential direction, the vertical plate is provided with a buckle hole, the middle part of the upper end of the connecting plate of the shell base is provided with a mounting column hole, the lower end of the connecting plate of the shell base is uniformly provided with a clamping claw in the circumferential direction, the connecting plate of the shell base is provided with a through groove in the circumferential direction, the outer wall of the connecting plate of the shell base is provided with an annular flange, the number of the vertical plate and the through groove is equal, and they are respectively distributed at intervals of 120 degrees in the circumferential direction of the shell base.

[0011] Preferably, the upper end of the bottom plate of the connecting sliding seat is provided with a buckling claw in the circumferential direction, and the inside of the bottom plate of the connecting sliding seat is provided with a valve rod clamping piece; the buckling claw is distributed at intervals of 120 degrees in the circumferential direction of the upper end of the connecting sliding seat.

[0012] In another aspect of the present application, a use method of a secondary electric heating execution device based on a phase change material is provided, which comprises the following steps:

[0013] According to the operation environment, the use mode of the electric heating execution device is determined.

[0014] If the water distribution integrator needs to be repaired, the manual control mode is started: rotate the knob, drive the lifting slide to move axially along the lifting slider of the guide shell through the lifting nut, thereby driving the axial movement of the connecting slide connected to the clamping groove of the lifting slide through the clamping jaw, and since the valve stem clamping piece of the connecting slide is connected to the valve stem, the valve core moves axially, completing the opening or closing of the valve in the water distribution integrator.

[0015] If indoor temperature adjustment is needed, input the predetermined temperature on the temperature controller and start the automatic control mode:

[0016] If the room temperature is higher than the predetermined temperature, the temperature controller controls the first and second cylindrical electric heating plates in the electric heating execution device to be powered off, at which time the electric heating execution device is in the initial state, the valve in the water distribution integrator is closed, and the room temperature gradually reaches the predetermined temperature on the temperature controller.

[0017] If the room temperature is lower than the predetermined temperature, the difference between the room temperature and the predetermined temperature is determined:

[0018] If the difference between the room temperature and the predetermined temperature is equal to or greater than 5 degrees Celsius, the temperature controller controls the first and second cylindrical electric heating plates in the first and second propulsion assemblies to be powered on, respectively, at which time under the pushing action of the melted paraffin, the first sealing ring pushes the second filling cylinder to move axially, the second sealing ring pushes the push rod to move axially, and finally under the joint action of the two propulsion assemblies, the push rod pushes the push rod baffle in the lifting slide to move axially, and finally the valve core is moved axially by 5 mm through the connecting slide, the valve in the water distribution integrator is in a fully open state, and hot water flows into the radiator at the maximum flow rate.

[0019] If the difference between the room temperature and the predetermined temperature is between 2 and 5 degrees Celsius, the temperature controller controls the first cylindrical electric heating plate in the first propulsion assembly to be powered on, causing the paraffin in the first filling cylinder to melt, at which time the first sealing ring pushes the second filling cylinder to move axially, thereby causing the push rod to push the push rod baffle in the lifting slide to move axially, and finally the valve core is moved axially by 3.5 mm through the connecting slide, causing the valve in the water distribution integrator to open and hot water to begin flowing into the radiator.

[0020] If the difference between the room temperature and the predetermined temperature is less than or equal to 2 degrees Celsius, the temperature controller controls the secondary cylindrical electric heating plate in the secondary propulsion assembly to be powered on, so that the paraffin in the secondary filling cylinder melts, controls the primary cylindrical electric heating plate in the primary propulsion assembly to be powered off, so that the paraffin in the primary filling cylinder solidifies, at this time, the primary propulsion assembly restores the initial state under the action of the reset spring, the paraffin in the secondary filling cylinder makes the secondary paraffin filling cylinder move axially, so that the push rod moves the push rod baffle in the lifting slide axially, and finally the valve core is axially moved by 1.5mm through the connection slide, so that the valve in the water distribution integrator is opened to a small extent, and less hot water starts to flow into the radiator. When the room temperature and the predetermined temperature are equal, the temperature controller controls the secondary cylindrical electric heating plate in the secondary propulsion assembly to be powered off, so that the paraffin in the secondary filling cylinder solidifies, at this time, the secondary propulsion assembly restores the initial state under the action of the reset spring, so that the valve in the water distribution integrator is closed.

[0021] Compared with the prior art, the present application has the following advantages:

[0022] 1. In the automatic control, the actuator is divided into two levels, the stroke of the primary propulsion assembly is 3.5mm, and the stroke of the secondary propulsion assembly is 1.5mm. Under different working conditions, different on-off control is adopted for the primary propulsion assembly and the secondary propulsion assembly, so that the room temperature reaches the predetermined temperature faster.

[0023] 2. In the present application, when the temperature controller approaches the predetermined temperature, the secondary electric heating execution device only needs to open and close the secondary propulsion assembly once to reach the predetermined temperature. Not only can the predetermined temperature be accurately reached, but also the temperature precision is high, and the service life of the execution device is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a full cross-sectional view of the two-stage electric heating execution device based on phase change material in the initial closed state of the present application;

[0025] Figure 2 It is a full cross-sectional view of the two-stage electric heating execution device based on phase change material in the manual opening state of 5mm of the present application;

[0026] Figure 3 It is a full cross-sectional view of the two-stage electric heating execution device based on phase change material in the electric heating control primary opening state of 3.5mm of the present application;

[0027] Figure 4 It is a full cross-sectional view of the two-stage electric heating execution device based on phase change material in the electric heating control secondary opening state of 1.5mm of the present application;

[0028] Figure 5The full section view of the second electric heating execution device based on phase change material in the application in the state of 5mm when the first and second electric heating control are opened simultaneously;

[0029] Figure 6 The section view of the guide shell in the second electric heating execution device based on phase change material in the application;

[0030] Figure 7 The section view of the lifting slide in the second electric heating execution device based on phase change material in the application;

[0031] Figure 8 The section view of the shell base in the second electric heating execution device based on phase change material in the application;

[0032] Figure 9 The section view of the connecting slide in the second electric heating execution device based on phase change material in the application;

[0033] Figure 10 The explosion view of the pushing assembly in the second electric heating execution device based on phase change material in the application.

[0034] Main reference signs:

[0035] Water distribution integrator 1, protective cover 2, closing 21, positioning card 22, knob 3, positioning edge 31, lifting screw 32, lifting nut 4, guide shell 5, lifting slide 51, buckle 52, annular flange 53, positioning boss 54, lifting slide 6, return spring 61, lifting slide 62, claw hook 63, shoulder 64, push rod baffle 65, clamping groove 66, shell base 7, clamping jaw 71, vertical plate 72, buckle hole 73, mounting column hole 74, through groove 75, annular boss 76, connecting plate 77, connecting slide 8, buckling jaw 81, valve rod clamping piece 82, bottom plate 83, second pushing assembly 9, push rod 91, second sealing plug 92, second sealing ring 93, second cylindrical electric heating plate 94, second filling cylinder 95, first pushing assembly 10, first sealing plug 101, first sealing ring 102, first filling cylinder 103, first cylindrical electric heating plate 104, booster protective shell 105, nut 11, internal thread 111, nut closing 112, valve cover 12, base reference surface 121, valve core 13, valve rod 14. DETAILED DESCRIPTION

[0036] For the technical content, structural features, purposes achieved and effects of the application, the following will be described in detail in combination with the drawings of the specification.

[0037] The second electric heating execution device based on phase change material, such as Figures 1 to 5As shown, including protective cover 2, knob 3, lifting nut 4, guide housing 5, lifting slide 6, housing base 7, connecting slide 8, secondary propulsion assembly 9, primary propulsion assembly 10, nut 11 and valve cover 12; preferably, lifting nut 4, lifting slide 6, connecting slide 8 and valve stem 14 constitute lifting mechanism.

[0038] The upper end of the protective cover 2 is provided with a neck 21, and the lower end of the protective cover 2 is uniformly provided with a positioning card 22 in the circumferential direction, and the positioning card 22 is distributed at an interval of 90 degrees at the lower end of the protective cover 2; Because the working environment of the electric heating execution device is relatively humid, sometimes it will also contact water, so the protective cover 2 can isolate the humid air and protect the internal structure of the electric heating execution device from being damaged by water vapor. The outer part of the lower end of the knob 3 is provided with a positioning rim 31, the center of the inner part of the knob 3 is provided with a lifting screw 32, the inner part of the nut 11 is provided with an inner thread 111, and the upper end of the nut 11 is provided with a nut neck 112 in the circumferential direction.

[0039] As shown in Figure 6 The inner wall of the upper end of the guide housing 5 is provided with a lifting block 51, the outer wall of the upper end of the guide housing 5 is provided with an annular flange 53, and the outer wall of the lower end of the guide housing 5 is provided with a positioning boss 54, the positioning boss 54 is uniformly provided with a buckle 52 in the circumferential direction of the positioning side, and the lifting block and the positioning boss are respectively distributed at an interval of 120 degrees on the circumference of the guide housing. The positioning boss 54 supports the knob 3 and the protective cover 2, ensures that the knob 3 only makes circumferential motion, and makes the lifting nut 4 always in close contact with the lifting slide 6 during manual control, thereby improving the efficiency and accuracy of manual control.

[0040] As shown in Figure 7 The upper end of the lifting slide 6 is provided with a claw hook 63 in the circumferential direction, the outer wall of the claw hook 63 is provided with a lifting chute 62, which plays a guiding role on the lifting block 51 located in the lifting chute 62, the inner part of the lifting slide 6 is provided with a push rod baffle 65, the lower end of the lifting slide 6 is provided with a shoulder 64 in the circumferential direction, the shoulder 64 is uniformly provided with a clamping groove 66 in the circumferential direction, and the claw hook 63 is distributed on the circumference of the upper end of the lifting slide 6 at an interval of 60 degrees, thereby reducing the resistance during assembly of the lifting slide 6 and the lifting nut 4, avoiding damage to the claw hook 63, and the lifting chute 62 is distributed on the circumference of the upper end of the lifting slide 6 at an interval of 120 degrees.

[0041] As shown in Figure 8As shown, the upper end of the connecting plate 77 of the shell base 7 is uniformly provided with a vertical plate 72 in the circumferential direction, the vertical plate 72 is provided with a buckle hole 73, the middle of the upper end of the connecting plate 77 of the shell base 7 is provided with a mounting column hole 74, the lower end of the connecting plate 77 of the shell base 7 is uniformly provided with a clamping jaw 71 in the circumferential direction, the connecting plate 77 of the shell base 7 is provided with a through slot 75 in the circumferential direction, the outer wall of the connecting plate 77 of the shell base 7 is provided with an annular boss 76, the number of vertical plates 72 and through slots 75 is equal, and they are respectively distributed at an interval of 120 degrees in the circumferential direction of the shell base 7.

[0042] As shown in Figure 9 , the upper end of the connecting plate 77 of the shell base 7 is uniformly provided with a vertical plate 72 in the circumferential direction, the vertical plate 72 is provided with a buckle hole 73, the middle of the upper end of the connecting plate 77 of the shell base 7 is provided with a mounting column hole 74, the lower end of the connecting plate 77 of the shell base 7 is uniformly provided with a clamping jaw 71 in the circumferential direction, the connecting plate 77 of the shell base 7 is provided with a through slot 75 in the circumferential direction, the outer wall of the connecting plate 77 of the shell base 7 is provided with an annular boss 76, the number of vertical plates 72 and through slots 75 is equal, and they are respectively distributed at an interval of 120 degrees in the circumferential direction of the shell base 7. Figure 1 As shown in , the upper end of the connecting plate 77 of the shell base 7 is uniformly provided with a vertical plate 72 in the circumferential direction, the vertical plate 72 is provided with a buckle hole 73, the middle of the upper end of the connecting plate 77 of the shell base 7 is provided with a mounting column hole 74, the lower end of the connecting plate 77 of the shell base 7 is uniformly provided with a clamping jaw 71 in the circumferential direction, the connecting plate 77 of the shell base 7 is provided with a through slot 75 in the circumferential direction, the outer wall of the connecting plate 77 of the shell base 7 is provided with an annular boss 76, the number of vertical plates 72 and through slots 75 is equal, and they are respectively distributed at an interval of 120 degrees in the circumferential direction of the shell base 7.

[0043] As shown in Figure 1 , the upper end of the connecting plate 77 of the shell base 7 is uniformly provided with a vertical plate 72 in the circumferential direction, the vertical plate 72 is provided with a buckle hole 73, the middle of the upper end of the connecting plate 77 of the shell base 7 is provided with a mounting column hole 74, the lower end of the connecting plate 77 of the shell base 7 is uniformly provided with a clamping jaw 71 in the circumferential direction, the connecting plate 77 of the shell base 7 is provided with a through slot 75 in the circumferential direction, the outer wall of the connecting plate 77 of the shell base 7 is provided with an annular boss 76, the number of vertical plates 72 and through slots 75 is equal, and they are respectively distributed at an interval of 120 degrees in the circumferential direction of the shell base 7.

[0044] As shown in Figure 2As shown, the buckle 52 of the guide shell 5 and the buckle hole 73 of the shell base 7 are connected, the connecting slide 8 is located inside the shell base 7, the buckle claw 81 of the connecting slide 8 passes through the through slot 75 of the shell base 7 and the clamping slot 66 of the lifting slide 6 to be connected, the valve rod clamping piece 82 of the connecting slide 8 is connected with the first end of the valve rod 14, the second end of the valve rod 14 passes through the middle part of the valve cover 12 and the valve core 13 to be connected, the clamping claw 71 of the shell base 7 and the screw thread closing 112 of the screw cap 11 are connected, the clamping claw 71 and the screw thread closing 112 are clamped and connected to fix the axial position between the shell base 7 and the screw cap 11, and at the same time, the rotation of the screw cap 11 around the shell base 7 is ensured to be screwed with the valve cover 12, in the cooperation process of the two, the lower end surface of the clamping claw 71 of the shell base 7 and the base reference surface 121 of the valve cover 12 are in contact, the base reference surface 121 fixes and positions the shell base 7 and the whole electric heating execution device, the lower end of the valve cover 12 is connected with the mounting end of the water distribution integrator 1, and the upper end of the valve cover 12 is connected with the inner screw thread 111 of the screw cap 11.

[0045] Specifically, the knob 3 and the lifting nut 4 constitute a manual control, as shown in Figure 1 As shown, when the knob 3 is manually rotated, the lifting nut 4 is rotated and axially moved at the same time, the lifting nut 4 and the lifting slide 6 are buckled by the claw hook 63 to make the two closely contact, the lifting nut 4 drives the lifting slide 6 to axially move, the lifting slide 6 drives the connecting slide 8 to axially move, the connecting slide 8 drives the valve rod 14 to axially move, thereby controlling the size of the opening and closing of the valve on the water distribution integrator 1.

[0046] The electric heating execution device is divided into two stages, which includes a two-stage propulsion assembly 9 and a one-stage propulsion assembly 10, as shown in Figure 3 and Figure 5 As shown, the two-stage propulsion assembly 9 is located inside the lifting slide 6, and the one-stage propulsion assembly 10 is located in the mounting column hole 74 of the shell base 7, specifically, the one-stage propulsion assembly 10 and the two-stage propulsion assembly 9 are placed between the mounting column hole 74 of the shell base 7 and the push rod baffle 65. The two-stage propulsion assembly 9, as shown in Figure 10 includes a push rod 91, a two-stage sealing plug 92, a two-stage sealing ring 93, a two-stage cylindrical electric heating plate 94 and a two-stage filling cylinder 95, wherein the outer hexagonal nut in the two-stage sealing plug 92 is convenient to disassemble; the first end of the push rod 91 is connected with the push rod baffle 65 of the lifting slide 6, so as to drive the lifting mechanism and the valve rod 14 to axially move to control the opening and closing of the valve, control the size of the opening and closing of the valve and the hot water flow, and achieve the purpose of controlling the room temperature; the second end of the push rod 91 is connected with the middle part of the two-stage sealing plug 92, the outer wall mounting end of the two-stage sealing plug 92 is connected with the upper end of the inner wall of the two-stage filling cylinder 95, the two-stage sealing ring 93 is located on the inner wall of the two-stage filling cylinder 95, the lower end of the inner wall of the two-stage filling cylinder 95 is provided with a paraffin cavity, and the two-stage cylindrical electric heating plate 94 is located at the lower end of the outer wall of the two-stage filling cylinder 95.

[0047] As Figure 4 shown, when the volume of the melted paraffin wax in the paraffin wax cavity of the secondary filling cylinder 95 changes, the secondary filling cylinder 95 is pushed to move axially, and the push rod 91 is pushed to move axially, thereby moving the lifting slide 6 and the valve rod 14. The phase change material is sealed by the secondary sealing plug 92 and the secondary sealing ring 93, the secondary sealing ring 93 and the secondary filling cylinder 95 are sealed by a V-shaped groove, which can effectively prevent the leakage of the liquid phase change material paraffin wax, the secondary sealing plug 92 and the secondary filling cylinder 95 are connected by threads, which can fix the secondary sealing ring 93. The secondary cylindrical electric heating plate 94 is connected with the temperature controller, the temperature controller judges the high and low of the room temperature and the predetermined temperature through the sensor, and controls the on-off of the heating plate: when the room temperature is higher than the predetermined temperature of the temperature controller, the secondary cylindrical electric heating plate 94 is in the off state, the valve on the water distribution integrator 1 is closed, and no hot water flows into the room, on the contrary, the valve on the water distribution integrator 1 is opened, and hot water flows into the room. By controlling whether the phase change material paraffin wax melts and expands in volume, the size of the opening and closing of the valve on the water distribution integrator 1 and the hot water flow are controlled, so as to achieve the effect of controlling the room temperature.

[0048] The primary propulsion assembly 10 includes a primary sealing plug 101, a primary sealing ring 102, a primary filling cylinder 103, a primary cylindrical electric heating plate 104, and a booster protection shell 105. The outer hexagonal nut in the primary sealing plug 101 can be conveniently assembled and disassembled. The installation end of the secondary filling cylinder 95 passes through the middle part of the primary sealing plug 101 and is connected with the primary sealing ring 102. The outer wall installation end of the primary sealing plug 101 is connected with the upper end of the inner wall of the primary filling cylinder 103. The primary sealing ring 102 is located on the boss of the inner wall of the primary filling cylinder 103. The lower end of the inner wall of the primary filling cylinder 103 is provided with a paraffin wax cavity. The paraffin wax is located inside the paraffin wax cavity. The primary cylindrical electric heating plate 104 is located at the lower end of the outer wall of the primary filling cylinder 103. The primary filling cylinder 103 is located inside the booster protection shell 105. The upper end of the booster protection shell 105 is connected with the hexagonal boss of the primary sealing plug 101.

[0049] As Figure 3 shown, when the volume of the melted paraffin wax in the paraffin wax cavity of the primary filling cylinder 103 changes, the secondary filling cylinder 95 is pushed to move axially, and the push rod 91 is pushed to move axially, thereby moving the lifting slide 6 and the valve rod 14. The phase change material is sealed by the secondary sealing plug 92 and the secondary sealing ring 93, the secondary sealing ring 93 and the secondary filling cylinder 95 are sealed by a V-shaped groove, which can effectively prevent the leakage of the liquid phase change material paraffin wax, the secondary sealing plug 92 and the secondary filling cylinder 95 are connected by threads, which can fix the secondary sealing ring 93. The secondary cylindrical electric heating plate 94 is connected with the temperature controller, the temperature controller judges the high and low of the room temperature and the predetermined temperature through the sensor, and controls the on-off of the heating plate: when the room temperature is higher than the predetermined temperature of the temperature controller, the secondary cylindrical electric heating plate 94 is in the off state, the valve on the water distribution integrator 1 is closed, and no hot water flows into the room, on the contrary, the valve on the water distribution integrator 1 is opened, and hot water flows into the room. By controlling whether the phase change material paraffin wax melts and expands in volume, the size of the opening and closing of the valve on the water distribution integrator 1 and the hot water flow are controlled, so as to achieve the effect of controlling the room temperature.

[0050] The application is further described below in combination with embodiments of a secondary electric heating execution device based on phase change material and a method for using the same.

[0051] The device can be applied to central air conditioners, plays an important role in controlling temperature in different rooms, improves temperature accuracy, and can also be used on radiators to more accurately control fluid flow and improve heat dissipation efficiency. In a preferred embodiment of the application, the first filling cylinder 103 is filled with phase change material, i.e., paraffin wax, and the volume of the paraffin wax is 1215mm 3 When the paraffin wax is heated and melted, the volume increases by about 15% of the original volume. Since the hole diameter of the first sealing plug 101 is 8mm, the expanded volume of the paraffin wax pushes the first sealing ring 102 to elastically deform. The elastic deformation occurs in the hole diameter of the first sealing plug 101 and moves along the axis direction of the hole diameter. The first sealing ring 102 pushes the second filling cylinder 95 to move axially, and in turn drives the valve stem 14 to move axially. Under the combined action of the return spring 61 and the elastic deformation of the first sealing ring 102, the valve stem 14 moves 3.5mm in the axial direction.

[0052] The second filling cylinder 95 is filled with phase change material, i.e., paraffin wax, and the volume of the paraffin wax is 538mm 3 When the paraffin wax is heated and melted, the volume increases by about 15% of the original volume. The hole diameter of the second sealing plug 92 is 8mm, and the expanded volume of the paraffin wax pushes the second sealing ring 93 to elastically deform. The elastic deformation occurs in the hole diameter of the second sealing plug 92 and moves along the axis direction of the hole diameter. The second sealing ring 93 pushes the push rod 91 to move axially, and in turn drives the valve stem 14 to move axially. Under the combined action of the return spring 61 and the elastic deformation of the second sealing ring 93, the valve stem 14 moves 1.5mm in the axial direction.

[0053] The method for using the secondary electric heating execution device based on phase change material includes manual control and automatic control, and specifically includes the following steps:

[0054] According to the operating environment, the use mode of the electric heating execution device is determined.

[0055] If the water distribution integrator 1 needs to be repaired and each room needs to be tested, the manual control mode is started: for example Figure 2As shown, rotating the knob 3 drives the lifting nut 4 to move axially along the lifting slider 51 of the guide housing 5, thereby driving the connecting slide 8 connected with the clamping groove 66 of the lifting slide 6 to move axially. Since the valve rod clamping piece 82 of the connecting slide 8 is connected with the valve rod 14, the valve core 13 moves axially, thereby opening or closing the valve in the water distribution integrator 1, controlling the opening and closing size of the valve, and controlling the hot water flow to control the room temperature.

[0056] If the indoor temperature needs to be adjusted, the preset temperature is input on the temperature controller, and the automatic control mode is started. At this time, the temperature controller measures the indoor temperature through the sensor, and then gives the corresponding feedback signal to the temperature controller. The temperature controller compares the feedback signal information with the preset temperature, and makes corresponding action conditions:

[0057] If the room temperature is higher than the preset temperature, the temperature controller controls the second-stage cylindrical electric heating plate 94 and the first-stage cylindrical electric heating plate 104 in the electric heating execution device to be powered off, respectively. At this time, the electric heating execution device is in the initial state, the valve in the water distribution integrator 1 is closed, no hot water flows into the room, and the room temperature gradually reaches the preset temperature on the temperature controller.

[0058] If the room temperature is lower than the preset temperature, the difference between the room temperature and the preset temperature is determined:

[0059] If the difference between the room temperature and the preset temperature is greater than or equal to 5 degrees Celsius, the temperature controller gives the second-stage pushing assembly 9 and the first-stage pushing assembly 10 power-on signals, respectively, controls the first-stage cylindrical electric heating plate 104 in the first-stage pushing assembly 10 and the second-stage cylindrical electric heating plate 94 in the second-stage pushing assembly 9 to be powered on, at this time, under the pushing action of the melted paraffin, the first-stage sealing ring 102 pushes the second-stage filling cylinder 95 to move axially, the second-stage sealing ring 93 pushes the push rod 91 to move axially, finally, under the joint action of the two-stage pushing assemblies, the push rod 91 pushes the push rod baffle 65 in the lifting slide 6 to move axially, finally, the valve core 13 is driven by the connecting slide 8 to move axially by 5 mm, as shown, at this time, the valve in the water distribution integrator 1 is in a fully open state, hot water flows into the radiator at the maximum flow rate, and the room temperature rises. Figure 5

[0060] If the difference between the room temperature and the preset temperature is between 2-5 degrees Celsius, the temperature controller gives the first-stage pushing assembly 10 a power-on signal, controls the first-stage cylindrical electric heating plate 104 in the first-stage pushing assembly 10 to be powered on, and melts the paraffin in the first-stage filling cylinder 103. At this time, the first-stage sealing ring 102 drives the second-stage filling cylinder 95 to move axially, thereby driving the push rod 91 to push the push rod baffle 65 in the lifting slide 6 to move axially, finally, the lifting mechanism moving the valve opening and closing is controlled, and the valve core 13 is driven by the connecting slide 8 to move axially by 3.5 mm, as shown.​Figure 3 As shown, the valve in the water distribution integrator is opened, and hot water starts to flow into the radiator.

[0061] If the difference between the room temperature and the predetermined temperature is less than or equal to 2 degrees Celsius, the temperature controller sends a power-on signal to the secondary propulsion assembly 9, a power-off signal to the primary propulsion assembly 10, controls the secondary cylindrical electric heating plate 94 in the secondary propulsion assembly 9 to be powered on, melts the paraffin in the secondary filling cylinder 95, controls the primary cylindrical electric heating plate 104 in the primary propulsion assembly 10 to be powered off, solidifies the paraffin in the primary filling cylinder 103, at this time, the primary propulsion assembly 10 returns to the initial state under the action of the return spring 61, the paraffin in the secondary filling cylinder 95 makes the secondary filling cylinder 95 move axially, thereby making the push rod 91 push the push rod baffle 65 in the lifting slide 6 to move axially, and finally drives the valve core 13 to move axially by 1.5 mm through the connecting slide 8, as shown in the figure. Figure 4 As shown, the valve in the water distribution integrator 1 is opened to a small extent, and less hot water starts to flow into the radiator. When the room temperature and the predetermined temperature are equal, the temperature controller sends a power-off signal to the secondary propulsion assembly 9, controls the secondary cylindrical electric heating plate 94 in the secondary propulsion assembly 9 to be powered off, solidifies the paraffin in the secondary filling cylinder 95, at this time, the secondary propulsion assembly 9 returns to the initial state under the action of the return spring 61, makes the valve in the water distribution integrator 1 close, and no hot water flows into the radiator, and the room temperature reaches the predetermined temperature.

[0062] The secondary electric heating execution device of the present application can effectively control the hot water flow rate when the difference between the room temperature and the predetermined temperature is small, and the valve is opened to a small extent. The existing execution device continuously opens and closes the propulsion assembly to control the hot water flow rate when approaching the predetermined temperature. Since the stroke of the single-stage propulsion assembly is large, the control of the hot water flow rate cannot achieve the expected effect, and the indoor temperature is always higher or lower than the predetermined temperature. Simultaneously, continuously opening and closing the propulsion assembly can seriously reduce the service life of the actuator. Compared with the existing execution device, the secondary electric heating execution device of the present application only needs to open and close the secondary propulsion assembly 9 to reach the predetermined temperature, which not only can accurately reach the predetermined temperature and has high temperature precision, but also greatly improves the service life of the execution device.

[0063] The above-described embodiments are only used to describe the preferred embodiments of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the protection scope determined by the claims of the present application.

Claims

1. A two-stage electrothermal actuator based on phase change materials, comprising a protective cover, a knob, a lifting nut, a guide housing, a lifting slide, a housing base, a connecting slide, a two-stage propulsion assembly, a first-stage propulsion assembly, a nut, and a valve cover, characterized in that, The middle part of the lifting screw of the knob and the lifting nut are connected; the first end of the positioning edge of the knob is connected to the constriction of the protective cover; the second end of the positioning edge of the knob is connected to the positioning boss of the guide housing; the positioning clip of the protective cover is connected to the annular boss of the housing base; the lifting nut is located inside the lifting slide; the boss of the lifting nut is connected to the claw hook of the lifting slide; the lifting slide is located inside the guide housing; the lifting slide groove of the lifting slide is connected to the lifting slider of the guide housing; the return spring is located on the outer wall of the lifting slide; the return spring is located between the shoulder of the lifting slide and the annular flange of the guide housing. The guide housing's snap fastener is connected to the snap fastener hole of the housing base. The connecting slide is located inside the housing base. The connecting slide's snap-fit ​​claw passes through the through groove of the housing base and is connected to the snap groove of the lifting slide. The connecting slide's valve stem engaging piece is connected to the first end of the valve stem. The second end of the valve stem passes through the middle of the valve cover and is connected to the valve core. The housing base's snap fastener is connected to the threaded end of the nut. The lower end face of the housing base's snap fastener contacts the base reference surface of the valve cover. The lower end of the valve cover is connected to the mounting end of the water distribution integrator. The upper end of the valve cover is connected to the internal thread of the nut. The secondary propulsion assembly is located inside the lifting slide, and the primary propulsion assembly is located in the mounting post hole of the housing base. The secondary propulsion assembly includes a push rod, a secondary sealing plug, a secondary sealing ring, a secondary cylindrical electric heating plate, and a secondary filling cylinder. The first end of the push rod is connected to the push rod baffle of the lifting slide, and the second end of the push rod is connected to the middle of the secondary sealing plug. The outer wall mounting end of the secondary sealing plug is connected to the upper end of the inner wall of the secondary filling cylinder. The secondary sealing ring is located on the protrusion of the inner wall of the secondary filling cylinder. The lower end of the inner wall of the secondary filling cylinder is provided with a paraffin cavity, and the secondary cylindrical electric heating plate is located at the lower end of the outer wall of the secondary filling cylinder. The first-stage propulsion assembly includes a first-stage sealing plug, a first-stage sealing ring, a first-stage filling cylinder, a first-stage cylindrical electric heating plate, and a booster protective shell. The mounting end of the second-stage filling cylinder passes through the middle of the first-stage sealing plug and connects to the first-stage sealing ring. The mounting end of the outer wall of the first-stage sealing plug is connected to the upper end of the inner wall of the first-stage filling cylinder. The first-stage sealing ring is located on a protrusion on the inner wall of the first-stage filling cylinder. A paraffin cavity is provided at the lower end of the inner wall of the first-stage filling cylinder, and paraffin is located inside the paraffin cavity. The first-stage cylindrical electric heating plate is located at the lower end of the outer wall of the first-stage filling cylinder. The first-stage filling cylinder is located inside the booster protective shell, and the upper end of the booster protective shell is connected to the hexagonal protrusion of the first-stage sealing plug.

2. The two-stage electrothermal actuator based on phase change material according to claim 1, characterized in that, The upper end of the protective cover is provided with a tapered opening, and the lower end of the protective cover is provided with positioning clips evenly distributed along the circumferential direction. The positioning clips are distributed at 90-degree intervals at the lower end of the protective cover. The lower end of the knob is provided with a positioning edge, and the center of the inside of the knob is provided with a lifting screw. The inside of the nut is provided with an internal thread, and the upper end of the nut is provided with a nut tapered opening along the circumferential direction.

3. The two-stage electrothermal actuator based on phase change material according to claim 1, characterized in that, The upper inner wall of the guide housing is provided with a lifting slider, the upper outer wall of the guide housing is provided with an annular flange, and the lower outer wall of the guide housing is provided with a positioning boss. The positioning boss has evenly distributed buckles on the circumferential direction on the positioning side. The lifting slider and the positioning boss are respectively distributed at 120 degrees on the circumference of the guide housing.

4. The two-stage electrothermal actuator based on phase change material according to claim 1, characterized in that, The upper end of the lifting slide is provided with a claw hook along the circumferential direction, the outer wall of the claw hook is provided with a lifting slide groove, the interior of the lifting slide is provided with a push rod baffle, the lower end of the lifting slide is provided with a shoulder along the circumferential direction, the shoulder is provided with slots evenly distributed along the circumferential direction, the claw hooks are distributed at 60 degrees on the circumference of the upper end of the lifting slide, and the lifting slide grooves are distributed at 120 degrees on the circumference of the upper end of the lifting slide.

5. The two-stage electrothermal actuator based on phase change material according to claim 1, characterized in that, The upper end of the connecting plate of the housing base has evenly distributed vertical plates along its circumference, and each vertical plate has a snap-fit ​​hole. The middle of the upper end of the connecting plate of the housing base has a mounting post hole. The lower end of the connecting plate of the housing base has evenly distributed claws along its circumference. The connecting plate of the housing base has a through groove along its circumference. The outer wall of the connecting plate of the housing base has an annular boss. The number of vertical plates and through grooves are equal, and they are distributed at 120 degrees along the circumference of the housing base.

6. The two-stage electrothermal actuator based on phase change material according to claim 1, characterized in that, The connecting slide has a snap-fit ​​claw on the upper circumferential direction of the base plate, and a valve stem engaging piece is provided inside the base plate of the connecting slide. The snap-fit ​​claws are distributed at 120 degrees on the upper circumferential direction of the connecting slide.

7. A method of using a two-stage electrothermal actuator based on a phase change material according to any one of claims 1-6, characterized in that, It includes the following steps: Determine the usage mode of the electric heating actuator based on the operating environment: If maintenance of the water distribution unit is required, activate the manual control mode: rotate the knob, and the lifting nut will drive the lifting slide to move axially along the lifting slider of the guide housing, thereby driving the connecting slide to move axially through the snap-fit ​​claw connected to the slot of the lifting slide. Since the valve stem engaging piece of the connecting slide is connected to the valve stem, the valve core moves axially, completing the opening and closing of the valve in the water distribution unit. If you need to adjust the indoor temperature, enter the preset temperature on the thermostat and start the automatic control mode: If the room temperature is higher than the preset temperature, the thermostat will de-energize the primary and secondary columnar electric heating plates in the electric heating actuator. At this time, the electric heating actuator is in the initial state, the valve in the water distribution integrator is closed, and the room temperature gradually reaches the preset temperature on the thermostat. If the room temperature is lower than the predetermined temperature, then determine the difference between the room temperature and the predetermined temperature: If the difference between the room temperature and the preset temperature is equal to or greater than 5 degrees Celsius, the thermostat controls the primary cylindrical electric heating plate in the primary propulsion assembly and the secondary cylindrical electric heating plate in the secondary propulsion assembly to be energized respectively. At this time, under the driving force of the melting paraffin, the primary sealing ring pushes the secondary filling cylinder to move axially, and the secondary sealing ring pushes the push rod to move axially. Finally, under the combined action of the two propulsion assemblies, the push rod pushes the push rod baffle in the lifting slide to move axially, and finally drives the valve core to move axially by 5mm through the connecting slide. The valve in the water distribution integrator is in a fully open state, and hot water flows into the radiator at the maximum flow rate. If the difference between the room temperature and the preset temperature is between 2 and 5 degrees Celsius, the thermostat controls the first-stage cylindrical electric heating plate in the first-stage propulsion assembly to be energized, causing the paraffin wax in the first-stage filling cylinder to melt. At this time, the first-stage sealing ring pushes the second-stage filling cylinder to move axially, thereby causing the push rod to push the push rod baffle in the lifting slide to move axially. Finally, through the connecting slide, the valve core moves axially by 3.5mm, causing the valve in the water distribution integrator to open, and hot water begins to flow into the radiator. If the difference between the room temperature and the preset temperature is less than or equal to 2 degrees Celsius, the thermostat controls the secondary cylindrical electric heating plate in the secondary propulsion assembly to be energized, melting the paraffin wax in the secondary filling cylinder. This de-energizes the primary cylindrical electric heating plate in the primary propulsion assembly, causing the paraffin wax in the primary filling cylinder to solidify. At this point, the primary propulsion assembly returns to its initial state under the action of the return spring. The paraffin wax in the secondary filling cylinder causes the secondary filling cylinder to move axially, thus pushing the push rod baffle in the lifting slide to move axially. Finally, through the connecting slide, the valve core moves axially by 1.5mm, causing the valve in the water distribution manifold to open only slightly, allowing a small amount of hot water to flow into the radiator. When the room temperature and the preset temperature are equal, the thermostat controls the secondary cylindrical electric heating plate in the secondary propulsion assembly to be de-energized, solidifying the paraffin wax in the secondary filling cylinder. At this point, the secondary propulsion assembly returns to its initial state under the action of the return spring, closing the valve in the water distribution manifold.

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