Power supply module, fan-coil system and refrigeration device

Abstract

The application provides a power supply module, a fan coil system and a refrigeration device. The power supply module comprises an electronic switch, an input terminal, a purification output terminal and a motor output terminal. The input terminal and the motor output terminal are connected through a phase line. The electronic switch is electrically connected with the purification output terminal. The electronic switch is used for controlling the on-off of the input terminal and the purification output terminal according to the signal on the phase line. The power supply module, the fan coil system and the refrigeration device of the application do not need additional wiring and can save cost.

Description

Technical Field

[0001] This application relates to the field of refrigeration equipment technology, and in particular to a power supply module, a fan coil system, and a refrigeration device. Background Technology

[0002] In existing fan coil systems, when selecting purification modules (such as electrostatic purification, micro-electrostatic purification, negative ion generators, etc.), the purification modules are usually powered and linked through a wind-sensor switch, which requires additional power cables, increasing installation complexity and cost.

[0003] Therefore, it is necessary to provide an improved power supply module, an AC three-speed fan coil system, a DC speed-regulating fan coil system, and a refrigeration device for fan coil purification modules to solve the above problems. Utility Model Content

[0004] This application provides a power supply module, fan coil system, and refrigeration device that requires no additional wiring and saves costs.

[0005] This application discloses a power supply module for a fan coil unit purification module, including an electronic switch, an input terminal, a purification output terminal, and a motor output terminal. The input terminal and the motor output terminal are connected via a phase line, and the electronic switch is electrically connected to the purification output terminal. The electronic switch is used to control the on / off state of the input terminal and the purification output terminal according to the signal on the phase line.

[0006] Furthermore, the electronic switch includes a current sensing coil coupled to the phase line, the current sensing coil being used to generate an induced current when a current signal flows through the phase line.

[0007] Furthermore, the electronic switch also includes a comparison trigger circuit and a cut-off conduction circuit. The input terminal of the cut-off conduction circuit is connected to the phase line, the trigger terminal of the cut-off conduction circuit is connected to the output terminal of the comparison trigger circuit, and the output terminal of the cut-off conduction circuit is electrically connected to the purification output terminal.

[0008] Furthermore, the electronic switch also includes a voltage regulator circuit and a rectifier filter circuit. The input terminal of the voltage regulator circuit is connected to the rectifier filter circuit, the input terminal of the rectifier filter circuit is connected to the current sensing coil, and the output terminals of both the voltage regulator circuit and the rectifier filter circuit are connected to the input terminal of the comparison trigger circuit.

[0009] Furthermore, the phase lines include a high-speed phase line, a medium-speed phase line, and a low-speed phase line, and the electronic switches accordingly include a first electronic switch communicatively connected to the high-speed phase line, a second electronic switch communicatively connected to the medium-speed phase line, and a third electronic switch communicatively connected to the low-speed phase line.

[0010] Furthermore, the phase lines include a W-phase phase line, a U-phase phase line, and a V-phase phase line, and the electronic switch is communicatively connected to any one of the W-phase phase line, the U-phase phase line, and the V-phase phase line.

[0011] Furthermore, the input terminal includes a first input terminal and a second input terminal. The first input terminal is electrically connected to the motor output terminal, and the electronic switch is used to control the connection and disconnection between the second input terminal and the purification output terminal according to the signal on the phase line.

[0012] This application also discloses an AC three-speed fan coil system, including a motor module, a purification module, and a power supply module for the fan coil purification module as described above. The motor module is electrically connected to the motor output terminal, and the purification module is electrically connected to the purification output terminal.

[0013] This application also discloses a DC speed-regulating fan coil system, including a motor module, a purification module, a drive board, and a power supply module for the fan coil purification module as described above. The motor module is electrically connected to the motor output terminal, the purification module is electrically connected to the purification output terminal, and the input terminal is electrically connected to the drive board.

[0014] This application also provides a refrigeration device, including the AC three-speed fan coil system as described above or the DC speed-regulating fan coil system as described above.

[0015] The power supply module, fan coil system, and refrigeration unit of this application incorporate an electronic switch that electrically connects to the purification output terminal. The electronic switch controls the switching between the input and output terminals based on signals from the phase line, allowing the electronic switch to directly conduct power from the phase line to the purification module without additional wiring, thus reducing costs and simplifying the structure. Furthermore, the purification module can be synchronously switched on and off with the motor, eliminating the need for separate control of the purification module's switch and improving ease of use.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] Figure 1 This is a schematic diagram of the layout of a power supply module for an AC three-speed fan coil system provided in an embodiment of this application.

[0019] Figure 2This is a schematic diagram of the structure of an AC three-speed fan coil system provided in an embodiment of this application.

[0020] Figure 3 This is a schematic diagram of the layout of a power supply module for a DC speed-regulating fan coil system provided in an embodiment of this application.

[0021] Figure 4 This is a schematic diagram of the structure of a DC speed-regulating fan coil system provided in an embodiment of this application.

[0022] Figure 5 This is a schematic diagram of the installation of a power supply module for a fan coil unit purification module on a refrigeration device, according to an embodiment of this application.

[0023] Reference numerals: 100, Power supply module; 10, Electronic switch; 101, First electronic switch; 102, Second electronic switch; 103, Third electronic switch; 11, Current sensing coil; 12, Comparison trigger circuit; 13, Cut-off and conduction circuit; 14, Voltage regulator circuit; 15, Rectifier and filter circuit; 20, Input terminal; 21, First input terminal; 22, Second input terminal; 30, Purification output terminal; 40, Motor output terminal; 50, Phase wire; 51, High-speed phase wire; 52, Medium-speed phase wire; 53, Low-speed phase wire; 54, W-phase phase wire; 55, U-phase phase wire; 56, V-phase phase wire; 60, Housing; 70, Circuit board; 200, Motor module; 300, Purification module; 400, Driver board; 410, Motor terminal; 420, Power supply terminal; 500, Temperature controller. Detailed Implementation

[0024] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0025] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0026] The power supply module, fan coil system, and refrigeration device of the present application embodiments are described in detail below with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementation methods can complement or combine with each other.

[0027] like Figure 1 and Figure 2 As shown, this application embodiment provides a power supply module 100 for supplying power to the purification module of a fan coil unit. The power supply module 100 includes an electronic switch 10, an input terminal 20, a purification output terminal 30, and a motor output terminal 40. The power supply module 100 also includes a housing 60 and a circuit board 70. The electronic switch 10, the input terminal 20, the purification output terminal 30, and the motor output terminal 40 are all disposed on the circuit board 70 and located inside the housing 60.

[0028] The purification output terminal 30 is connected to the purification module 300 in the fan coil system and is used to transmit command signals to the purification module 300. The motor output terminal 40 is connected to the motor module 200 in the fan coil system and is used to transmit command signals to the motor module 200.

[0029] In the power supply module 100, the input terminal 20 and the motor output terminal 40 are connected via a phase line 50. The electronic switch 10 is electrically connected to the purification output terminal 30. The electronic switch 10 is used to control the on / off state of the input terminal 20 and the purification output terminal 30 according to the signal on the phase line 50, so as to realize the power supply control of the purification module 300.

[0030] The electronic switch 10 has an on state and an off state, switching between the on and off states depending on whether current flows in the phase line 50. When current flows in the phase line 50, the electronic switch 10 switches to the on state and is electrically connected to the purification output terminal 30. When no current flows in the phase line 50, the electronic switch 10 switches to the off state and disconnects from the purification output terminal 30.

[0031] The electronic switch 10 includes a current sensing coil 11, a comparison trigger circuit 12, a cutoff and conduction circuit 13, a voltage regulator circuit 14, and a rectifier and filter circuit 15. The current sensing coil 11 is coupled to the phase line 50 and is used to generate an induced current when a current signal flows through the phase line 50. The current sensing coil 11 is close to or wound around the phase line 50. When current flows through the phase line 50, the current sensing coil 11 will generate an induced secondary alternating current through the principle of electromagnetic induction.

[0032] In this way, the current sensing coil 11 can realize the self-powered operation of the electronic switch 10 through the principle of electromagnetic induction, providing power for the operation of other circuits in the subsequent electronic switch 10, without the need for external power supply, thus eliminating the need for the design of external power supply lines.

[0033] The input terminal of the rectifier-filter circuit 15 is connected to the current sensing coil 11, and the output terminal is connected to the input terminal of the comparator-trigger circuit 12. The input terminal of the voltage regulator circuit 14 is connected to the rectifier-filter circuit 15, and the output terminal is connected to the comparator-trigger circuit 12. The input terminal of the comparator-trigger circuit 12 is connected to both the voltage regulator circuit 14 and the rectifier-filter circuit 15. The input terminal of the cut-off circuit 13 is connected to the phase line 50, and the trigger terminal is connected to the output terminal of the comparator-trigger circuit 12. The output terminal of the cut-off circuit 13 is electrically connected to the purified output terminal 30.

[0034] Thus, the induced current generated by the current sensing coil 11 is rectified and filtered in the rectifier and filter circuit 15, and then supplied to the comparison trigger circuit 12 and the voltage regulator circuit 14, respectively. The voltage regulator circuit 14 provides a stable power supply. The comparison trigger circuit 12 compares the rectified and filtered current with the reference current, and generates a trigger level when it exceeds a preset threshold. Upon receiving this trigger level, the cut-off circuit 13 switches the electronic switch 10 to the on state, allowing current to flow through the electronic switch 10 to the purified output terminal 30.

[0035] When there is no current flowing in the phase line 50, the current sensing coil 11 will not generate an induced current, the electronic switch 10 is in the off state, and the current cannot flow to the purification output terminal 30 through the electronic switch 10.

[0036] By setting up an electronic switch 10, which is electrically connected to the purification output terminal 30, and controlling the switching between the input terminal 20 and the purification output terminal 30 based on the signal on the phase line 50, the electronic switch 10 can directly conduct power from the phase line 50 to the purification module 300 without additional wiring, reducing costs and simplifying the structure. Furthermore, the purification module 300 can achieve synchronous switching with the motor module 200, eliminating the need for separate control of the purification module 300's switch and improving ease of use.

[0037] Please refer to Figure 1 and Figure 2 The power supply module 100 can be used in an AC three-speed fan coil system. In this embodiment, the phase lines 50 include a high-speed phase line 51, a medium-speed phase line 52, and a low-speed phase line 53. The input terminals 20 include a high-speed input terminal Hi, a medium-speed input terminal Me, a low-speed input terminal Lo, and a neutral terminal N. The motor output terminals 40 include a high-speed output terminal Hi, a medium-speed output terminal Me, a low-speed output terminal Lo, and a neutral terminal N. The high-speed input terminal Hi and the high-speed output terminal Hi are connected through the high-speed phase line 51, the medium-speed input terminal Me and the medium-speed output terminal Me are connected through the medium-speed phase line 52, the low-speed input terminal Lo and the low-speed output terminal Lo are connected through the low-speed phase line 53, and the neutral terminal N of the input terminal 20 is connected to the neutral terminal N of the motor output terminal 40.

[0038] The AC three-speed fan coil system has three fan speeds: high, medium, and low. Input terminal 20 connects to the thermostat 500 in the fan coil system, inputting the command signal from the thermostat 500 to the power supply module 100. The thermostat 500 selects and switches speeds by selectively connecting to the high-speed input terminal Hi, the medium-speed input terminal Me, or the low-speed input terminal Lo.

[0039] The electronic switch 10 includes three independently configured electronic switches: a first electronic switch 101, a second electronic switch 102, and a third electronic switch 103. The first electronic switch 101 is communicatively connected to the high-speed phase line 51. The second electronic switch 102 is communicatively connected to the medium-speed phase line 52, and the third electronic switch 103 is communicatively connected to the low-speed phase line 53. To avoid the autotransformer effect of the motor windings, only the 220V phase line 50 is powered by the temperature controller 500 at any given time, while the other phase lines 50 remain in the off state.

[0040] In high-speed mode, 220V AC current flows through the high-speed phase line 51, while no current flows through the medium-speed phase line 52 and the low-speed phase line 53. The first electronic switch 101 is switched to the on state, while the second electronic switch 102 and the third electronic switch 103 are in the off state. Since the input terminal of the cut-off circuit 13 is connected to the input terminal 20 and the output terminal is connected to the purification output terminal 30, the cut-off circuit 13 allows the 220V AC current from the high-speed phase line 51 to flow into the first electronic switch 101 and be output to the purification output terminal 30, thereby providing 220V current to the purification module 300 and enabling the purification module 300 to operate at its rated voltage.

[0041] At medium speed, 220V AC current flows through the medium-speed phase line 52, while no current flows through the high-speed phase line 51 and the low-speed phase line 53. The second electronic switch 102 switches to the on state, while the first electronic switch 101 and the third electronic switch 103 are in the off state. The cut-off circuit 13 allows the 220V AC current on the medium-speed phase line 52 to be output to the purification output terminal 30, thereby providing 220V current to the purification module 300, enabling the purification module 300 to operate at its rated voltage.

[0042] At low speed, 220V AC current flows through the low-speed phase line 53, while no current flows through the high-speed phase line 51 and the medium-speed phase line 52. The third electronic switch 103 switches to the on state, while the first electronic switch 101 and the second electronic switch 102 are in the off state. The cut-off circuit 13 allows the 220V AC current on the low-speed phase line 53 to be output to the purification output terminal 30, thereby providing 220V current to the purification module 300, enabling the purification module 300 to operate at its rated voltage.

[0043] Thus, by setting three electronic switches 10 connected to the phase lines 50 of three different speed settings, when the motor module 200 is running at a certain speed setting, the corresponding electronic switch 10 senses the current and automatically turns on, allowing a stable 220V voltage output to the purification module 300. The electronic switches 10 at other speed settings are turned off to avoid interference. Regardless of the speed setting of the motor module 200, the purification module 300 can operate at its rated voltage, making its operation more reliable and stable.

[0044] Meanwhile, since the three electronic switches 10 work independently, when one or two electronic switches 10 fail, it will only affect the power supply of the purification module 300 in the corresponding gear position, further ensuring stability.

[0045] In this embodiment, the first electronic switch 101, the second electronic switch 102, and the third electronic switch 103 are all identical in design. Having fewer component specifications in the identical electronic switches 10 facilitates lower procurement costs. Furthermore, during the manufacturing process of the power supply module 100, the circuits of three electronic switches 10 can be fabricated simultaneously on a single printed circuit board, requiring only one placement machine and reflow soldering process, which helps reduce manufacturing costs.

[0046] Please refer to Figure 3 and Figure 4 The power supply module 100 can be used in a DC speed-regulating fan coil system. In this embodiment, the input terminal 20 includes a first input terminal 21 and a second input terminal 22. The first input terminal 21 is electrically connected to the motor output terminal 40. Simultaneously, the first input terminal 21 is externally connected to the motor terminal 410 of the drive board 400. When the motor starts, the drive board 400 outputs DC current to the motor module 200 through the phase line 50.

[0047] The second input terminal 22 is connected to the cut-off and conduction circuit 13 on the electronic switch 10. Simultaneously, the second input terminal 22 is externally connected to the power supply terminal 420 on the driver board 400. When the electronic switch 10 is turned on, the driver board 400 can output 220V voltage to the electronic switch 10 through the power supply terminal 420, and further supply it to the purification module 300, enabling the purification module 300 to operate at its rated voltage.

[0048] Phase lines 50 include W-phase line 54, U-phase line 55, and V-phase line 56. Electronic switch 10 is communicatively connected to any one of W-phase line 54, U-phase line 55, and V-phase line 56. When the motor starts, current flows through W-phase line 54, U-phase line 55, and V-phase line 56, inducing current in current sensing coil 11, and turning on electronic switch 10.

[0049] Electronic switch 10 controls the connection and disconnection between the second input terminal 22 and the purification output terminal 30 based on the signal on the phase line 50. When a current signal exists on the phase line 50, electronic switch 10 is turned on, electrically connecting the second input terminal 22 and the purification output terminal 30, thus supplying power to the purification output terminal 30. When there is no current signal on the phase line 50, electronic switch 10 is turned off, disconnecting the second input terminal 22 from the purification output terminal 30.

[0050] like Figure 2 As shown, this application also provides an AC three-speed fan coil system, including a motor module 200, a purification module 300, and a power supply module 100 for the fan coil purification module as described above. The motor module 200 is electrically connected to the motor output terminal 40, and the purification module 300 is electrically connected to the purification output terminal 30.

[0051] The purification module 300 can be equipped with low-power loads such as electrostatic, micro-electrostatic, and negative ion generators, with a rated voltage of 220V, a power not exceeding 10W, and a current not exceeding 0.05A. The electronic switch 10 has a switching capacity of 0.3A 220VAC. If the selected purification module 300 has a larger load, an intermediate relay can be added.

[0052] The following table illustrates the simulated operation of an embodiment of the AC three-speed fan coil system of this application. As shown in the table, the voltage is the energized voltage of the purification module 300, and the total power is the combined power of the motor module 200 and the purification module 300. Total power (on) represents the combined power of the motor module 200 and the purification module 300 when the purification module 300 is on. Total power (off) represents the combined power of the motor module 200 and the purification module 300 when the purification module 300 is off.

[0053] The data in the table shows that the voltage supplied to the purification module 300 is approximately 220V at all three speed settings (high, medium, and low). The total power at each speed differs by about 3W before and after the purification module 300 is switched on, meaning that the motor power at each speed is not affected by the switch on the purification module 300.

[0054] like Figure 4 As shown, a DC speed-regulating fan coil system is also provided, including a motor module 200, a purification module 300, a drive board 400, and a power supply module 100 for the fan coil purification module as described above. The motor module 200 is electrically connected to the motor output terminal 40, the purification module 300 is electrically connected to the purification output terminal 30, and the input terminal 20 is electrically connected to the drive board 400.

[0055] like Figure 5As shown, this application also provides a refrigeration device, including the AC three-speed fan coil system as described above or the DC speed-regulating fan coil system as described above.

[0056] During actual installation, simply connect the thermostat 500 or drive board 400, motor module 200, purification module 300, and power supply module 100 to their respective terminals one by one. The power supply module 100 can be installed in the fan coil unit junction box during manufacturing; or it can be installed as an optional extra or as a retrofitted unit, fixed near the fan coil unit junction box.

[0057] The power supply module, AC three-speed fan coil system, DC speed-regulating fan coil system, and refrigeration device of this application for the fan coil purification module utilize an electronic switch 10. This electronic switch 10 is electrically connected to the purification output terminal 30, and controls the switching between the input terminal 20 and the purification output terminal 30 based on signals on the phase line 50. This allows the electronic switch 10 to directly conduct power from the phase line 50 to the purification module 300 without additional wiring, reducing costs and simplifying the structure. Furthermore, the purification module 300 can achieve synchronous switching with the motor module 200, eliminating the need for separate control of the purification module 300's switching, thus improving ease of use.

[0058] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A power supply module for a fan coil unit purification module, characterized in that, It includes an electronic switch, an input terminal, a purification output terminal, and a motor output terminal. The input terminal and the motor output terminal are connected via a phase line. The electronic switch is electrically connected to the purification output terminal. The electronic switch is used to control the on / off state of the input terminal and the purification output terminal based on the signal on the phase line.

2. The power supply module according to claim 1, characterized in that, The electronic switch includes a current sensing coil coupled to the phase line, the current sensing coil being used to generate an induced current when a current signal flows through the phase line.

3. The power supply module according to claim 2, characterized in that, The electronic switch further includes a comparison trigger circuit and a cut-off conduction circuit. The input terminal of the cut-off conduction circuit is connected to the phase line, the trigger terminal of the cut-off conduction circuit is connected to the output terminal of the comparison trigger circuit, and the output terminal of the cut-off conduction circuit is electrically connected to the purification output terminal.

4. The power supply module according to claim 3, characterized in that, The electronic switch further includes a voltage regulator circuit and a rectifier filter circuit. The input terminal of the voltage regulator circuit is connected to the rectifier filter circuit, and the input terminal of the rectifier filter circuit is connected to the current sensing coil. The output terminals of both the voltage regulator circuit and the rectifier filter circuit are connected to the input terminal of the comparison trigger circuit.

5. The power supply module according to claim 1, characterized in that, The phase lines include a high-speed phase line, a medium-speed phase line, and a low-speed phase line. The electronic switches correspondingly include a first electronic switch that is communicatively connected to the high-speed phase line, a second electronic switch that is communicatively connected to the medium-speed phase line, and a third electronic switch that is communicatively connected to the low-speed phase line.

6. The power supply module according to claim 1, characterized in that, The phase lines include a W-phase line, a U-phase line, and a V-phase line, and the electronic switch is communicatively connected to any one of the W-phase line, the U-phase line, and the V-phase line.

7. The power supply module according to claim 6, characterized in that, The input terminal includes a first input terminal and a second input terminal. The first input terminal is electrically connected to the motor output terminal. The electronic switch is used to control the connection and disconnection between the second input terminal and the purification output terminal according to the signal on the phase line.

8. A fan coil system, configured as an AC three-speed fan coil system, characterized in that, It includes a motor module, a purification module, and a power supply module as described in any one of claims 1-5, wherein the motor module is electrically connected to the motor output terminal, and the purification module is electrically connected to the purification output terminal.

9. A fan coil system, configured as a DC speed-regulating fan coil system, characterized in that, It includes a motor module, a purification module, a drive board, and a power supply module as described in any one of claims 1-4 and 6-7. The motor module is electrically connected to the motor output terminal, the purification module is electrically connected to the purification output terminal, and the input terminal is electrically connected to the drive board.

10. A refrigeration device, characterized in that, This includes the fan coil system as described in claim 8 or the fan coil system as described in claim 9.

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