CN110402355A

CN110402355A - Thermostat device and humidity control system

Info

Publication number: CN110402355A
Application number: CN201680091970.4A
Authority: CN
Inventors: 黎俊德; 陈佑宗; 杨纯彰; 谢松辉; 钟树鸿
Original assignee: Wonder Instruments Ltd; City University of Hong Kong CityU
Current assignee: City University of Hong Kong CityU
Priority date: 2016-11-07
Filing date: 2016-11-07
Publication date: 2019-11-01
Anticipated expiration: 2036-11-07
Also published as: WO2018082103A1; CN110402355B

Abstract

A kind of system of thermostat apparatus (200), it is used to be used together with humidity control system (100) or use as part of it, the humidity control system (100) includes at least the multiple-speed motor (152) for being couple to fan (154), wherein the thermostat apparatus (200) includes: motor driver (220), it is conductively coupled to the multiple-speed motor (152), motor driver (220), it is conductively coupled to power supply (210) and is configured to receive power supply signal from the power supply (210), speed control (230), itself and the motor driver (220) electronic communication, the speed control (230) is configured as providing reference signal to the motor driver (220), the reference signal is based on described more Difference between the reference velocity and measuring speed of electric motor with speed (152), the reference velocity is based on the difference between measurement temperature and reference temperature, and the reference temperature is set by the user, and wherein, the motor driver (220) is configured as generating the driving signal based on the received reference signal, and wherein the motor driver (220) is additionally configured to the driving signal generated being supplied to the multiple-speed motor (152).It is used together the present invention also provides one kind with humidity control system (100) or the method for thermostat apparatus (200) that a part as the humidity control system (100) uses.

Description

Thermostat device and humidity control system

Technical field

This disclosure relates to a kind of thermostat apparatus, and particularly, this disclosure relates to which one kind is together with humidity control system The thermostat apparatus for using or being used as part of it.

Background technique

Humidity control system is commonly used in adjusting the temperature, such as room, office, house etc. in space.Heating, ventilation and Cooling (HVAC) system is as the common system of humidity control system.Thermostat apparatus for sensing space hot situation and to Air-conditioning unit as HVAC system a part provides necessary signal.The one or more components of thermostat and HVAC system or Humidity control system interaction.

Thermostat be typically connected to and control the fan in humidity control system (such as HVAC system) or heating element or The operation of heater or valve.In general, the temperature in thermostats sense space, and the one or more components of HVAC system are controlled to incite somebody to action The temperature in space is kept as close possible to reference temperature.Reference temperature is temperature set-point, can be received from user, can also be by Building operator remotely controls.Thermostat includes various sensors, generally includes bimetal strip or thermistor.Typically Thermostat is binary type controller, is configured as control various assemblies, such as fan or heating element, at ON and OFF Switch between setting.This thermostat provides limited opereating specification for the control of the component in humidity control system.

Line voltage is another example of common thermostat in humidity control system.In on-Line Voltage thermostat, this is System power is directly switched by thermostat.Line voltage thermostat can be used for controlling the electronic of in humidity control system driving fan Machine.In humidity control system, fan is selectively opened or is closed by thermostat according to the space temperature relative to reference temperature It closes.The speed of the fan is controlled with switching.

In prior art systems, fan speed is controlled with inductive divider or capacitive divider device.

Inductive divider is widely used in change fan speed, in particular for the multiple-speed motor of driving fan.By changing Become the connection with thermostat to change the voltage and current for being applied to driving winding.Thermostat including inductive divider includes more A input head and the switch that may be coupled to one of multiple input heads.Every head is connected to inductor.For example, having three heads Thermostat in, power supply is connected to two inductors and motor by a head, and power supply is connected to an inductance by the second head Power supply is directly connected to motor by device and motor, third head.Fan speed is controlled by connecting one of head.Electricity Sensor reduces the received voltage of motor by being used as the impedance from the received AC voltage of power supply.

Inductive divider has the shortcomings that many.Inductive divider can only adjust fan speed in a discrete pattern, and by speed Selectional restriction is discrete velocity relevant to head quantity.In three head examples, fan speed can only be it is low, in or it is high.Due to Inductive divider device is integrated in motor field frame, therefore the size for the motor being used together with inductive divider is big and stupid Weight.In addition, the arrangement of inductive divider has parasitic antenna, power quality is caused to decline.Parasitic antenna will lead to motor temperature Degree increases, and conduction and core loss is led to, so as to shorten the service life of motor.Finally, this arrangement causes additional damage Consume and can increase the cost of motor designs.

Capacitive divider can be used in the thermostat of the prior art to control the multiple-speed motor of driving fan to control Fan speed processed.Change fan speed by connecting power supply between a series of capacitor of predetermined values, this is effectively limited It is supplied to the electrical power of motor.Capacitor is placed in motor case body or can be placed in thermostat.Including capacitor The thermostat of divider includes multiple input heads, and one including may be coupled in multiple input heads switch.Each Head is connected to capacitor or is connected by capacitor.For example, power supply is connected to by a head in the thermostat with three heads Power supply is connected to a capacitor by two capacitors, the second head, and power supply is directly connected to motor by third head.Pass through One of head is connected to control fan speed.Capacitor passes through electronic to reduce as the impedance from the received AC voltage of power supply The received voltage of machine.

Capacitive divider also has the shortcomings that many.One the disadvantage is that capacitance must be with the impedance of motor carefully Match, to allow the effective operation and control of motor.Actually this is a challenge, because the manufacturer of fan or motor is very Impedance information is provided less, therefore becomes difficult capacitor matching and usually infeasible.In addition, may have can for capacitor It can lead to the parasitic antenna of loss.Capacitive divider is also based only upon selected head configuration and carries out discrete velocity adjusting to fan.

One purpose of the disclosure is to provide a kind of thermostat apparatus and/or humidity control system, will substantially improve At least some defects.

It should be understood that such reference, which is not constituted, recognizes that the information forms this if any prior art information is mentioned above A part of field common knowledge.

Summary of the invention

According in a first aspect, the present invention provides a kind of thermostat apparatus, being used together with humidity control system or conduct A part of humidity control system uses, which includes at least the multiple-speed motor coupled with fan, wherein permanent Warm device device includes:

Motor driver, is conductively coupled to the multiple-speed motor, and the motor driver is conductively coupled to power supply simultaneously It is configured to receive power supply signal from the power supply,

Speed control, with the motor driver electronic communication, the speed control is configured to described Motor driver provide reference signal, reference velocity and measuring speed of the reference signal based on the multiple-speed motor it Between difference,

The reference velocity is set by the user based on the difference between measurement temperature and reference temperature, the reference temperature, with And；

Wherein, the motor driver is configured to generate driving signal based on the received reference signal, and Wherein the motor driver is further configured to the driving signal generated being supplied to the multiple-speed motor.

In one embodiment, the driving signal for being supplied to the multiple-speed motor includes driving voltage and driving frequency Rate, the reference signal includes reference voltage and reference frequency, and wherein the driving voltage and/or driving frequency are based on institute State reference signal adjusting.

In one embodiment, the driving signal is by the motor driver by being modulated based on the reference signal Received power supply signal and generate, and wherein the motor driver is configured as modulating the voltage of the power supply signal And/or frequency.

In one embodiment, the driving voltage is adjusted based on the reference voltage, and the driving frequency is based on The reference frequency is adjusted.

In one embodiment, the motor driver is configured as providing driving signal with one of following modes:

A, the variation voltage with constant frequency,

B, with the change frequency of constant voltage,

C, the variation voltage with change frequency.

In one embodiment, the driving signal is based on the driving voltage and the driving frequency controls the multi-speed The speed of motor, wherein the speed of the multiple-speed motor is related to the driving voltage and/or the driving frequency.

In one embodiment, the speed control includes comparator, and the comparator is configured to determine speed mistake Difference, wherein the velocity error is the difference between the reference velocity and the measuring speed, and the wherein speed control Device is configured as generating reference signal based on the velocity error.

In one embodiment, the speed control includes reference signal generator, the reference signal generator quilt It is configured to generate reference voltage or reference frequency or both reference voltage and reference frequency.

In one embodiment, the thermostat apparatus includes the velocity pick-up with the speed control electronic communication Device, the velocity sensor are configured to determine measuring speed and are transmitted to the speed control, and wherein described Measuring speed corresponds to electromotor velocity.

In one embodiment, the velocity sensor is tachometer, is configured as measurement instantaneous motor speed.

In one embodiment, the velocity sensor is configured as being based on when no electric power or not being supplied to described more The counter electromotive force (EMF) generated when electric motor with speed driving signal by the multiple-speed motor determines the measuring speed, and its Described in time cycle of measuring speed and the counter electromotive force be inversely proportional.

In one embodiment, the thermostat apparatus further includes temperature controller, and the temperature is configured as generating institute State reference velocity and be transmitted to the speed control, wherein the reference velocity be based on reference temperature and measurement temperature it Between difference generate.

In one embodiment, the temperature controller is suitable for receiving reference temperature, the temperature control from user interface Device is further adapted for receiving measurement temperature from temperature sensor, and the measurement temperature is related to the temperature in space,

Wherein the temperature controller is configured to increase the big of reference velocity if measurement temperature is greater than reference temperature It is small；And

Wherein the temperature controller is configured to reduce the big of reference velocity if measurement temperature is less than reference temperature It is small.

In one embodiment, the temperature controller is additionally configured to generate actuating signal and is transmitted to valve, institute Valve control heat exchanger supply heat exchange material is stated, the actuating signal includes state letter relevant to the state of the valve Breath, the status information includes ON state and OFF state, and the ON state makes the valve be moved to open position, the OFF shape State moves the valve to closed position；

If the measurement temperature is greater than upper threshold, the temperature controller is suitable for generating the actuating including ON state Signal, and if the measurement temperature is less than bottom threshold, the temperature controller is suitable for generating the cause including OFF state Dynamic signal, and；

Wherein, the upper threshold is related to the predetermined upper limit value in temperature lag band, and it is stagnant that the bottom threshold is related to temperature Predetermined lower bound value in band afterwards.

According to second aspect, the present invention provides a kind of humidity control system, for adjusting the temperature in space, wherein temperature tune Section system includes:

Fan component comprising fan and multiple-speed motor, the multiple-speed motor are connected to the fan and are configured The fan is driven at certain speed,

Thermostat apparatus, and the multispeed motor electrical communication, and it is configured to control the multiple-speed motor,

Thermostat apparatus further include:

In one embodiment, humidity control system further include:

Reservoir is suitable for accommodating heat exchange material,

Heat exchanger is connected to the reservoir fluid, wherein the heat exchanger is suitable for receiving from the reservoir The heat exchange material,

Valve, between the heat exchanger and the reservoir, the valve is optionally in open position and pass It is moved between closed position, wherein the valve allows heat exchange material to lead to the heat from the reservoir in the open position Exchanger and in the closed position, the valve prevent the heat exchange material from leading to the heat exchange from the reservoir Device,

Temperature sensor, be located at the space in and be configured as measure space temperature to generate measurement temperature, The temperature sensor is electrically connected so that the measurement temperature is transferred to the thermostat apparatus with the thermostat apparatus,

User interface is suitable for communicating with user, and wherein the user interface is further adapted for receiving from user with reference to temperature Degree.

In one embodiment, the driving signal for being supplied to the multiple-speed motor includes driving voltage and driving frequency Rate, the reference signal include that reference voltage and reference frequency and the driving voltage and/or driving frequency are based on the ginseng Signal adjustment is examined, and；

Wherein, the driving signal is received described by being modulated based on the reference signal by the motor driver Power supply signal generates, and wherein the motor driver is configured to modulate the voltage and/or frequency of the power supply signal.

A, the variation voltage with constant frequency,

B, with the change frequency of constant voltage,

C, the variation voltage with change frequency.

In one embodiment, the speed control includes comparator, and the comparator is configured to determine speed mistake Difference, wherein the velocity error is the difference between the reference velocity and the measuring speed, and the wherein speed control Device is configured to generate reference signal based on the velocity error.

In one embodiment, the thermostat apparatus includes temperature controller, and the temperature is configured as generating reference Speed is simultaneously transmitted to the speed control, wherein the reference velocity is based on the difference between reference temperature and measurement temperature It generates.

In one embodiment, user interface can be arranged to by any user's operation, including room user, long-range use Family or in the case where building, building manager or operator.User interface can also be autonomous by computing system Ground controls the ordinary temperature for reaching room or building.

In one embodiment, the temperature controller is additionally configured to generate actuating signal and be transmitted to described Valve,

Wherein, the actuating signal includes status information related with the state of the valve, and the status information includes ON State and OFF state, the ON state make the valve be moved to open position, and the OFF state makes the valve be moved to closing Position；

Wherein, the upper threshold value is related to the predetermined upper limit value in temperature lag band, and the lower threshold value is related to temperature lag band In predetermined lower bound value.

According to the third aspect, the present invention provides a kind of method using humidity control system conditioned space temperature, medium temperature Degree regulating system includes the thermostat apparatus with multiple-speed motor electronic communication, wherein method includes the following steps:

Measurement temperature is received from temperature sensor,

Receive reference temperature

Determine the difference between the reference temperature and the measurement temperature,

Reference velocity is determined based on the difference between the reference temperature and the measurement temperature,

The measuring speed of the multiple-speed motor is determined from velocity sensor,

Determine the difference between the reference velocity and the measuring speed,

Reference signal is generated based on the difference between the reference velocity and the measuring speed,

Driving signal is generated based on the reference signal, and；

The driving signal is transferred to the multiple-speed motor to drive the multiple-speed motor.

In one embodiment, driving signal is generated with one of following modes:

A, the variation voltage with constant frequency,

B, with the change frequency of constant voltage,

C, the variation voltage with change frequency.

According to fourth aspect, present disclose provides one kind to be used together with humidity control system or as humidity control system The thermostat apparatus that uses of a part, wherein humidity control system is configured as adjusting the temperature in space, humidity control system Including at least multi-speed rotary machine, which includes:

One or more active electronic components are conductively coupled to power supply, and one or more of active electronic components It is configured as receiving supply voltage,

One or more of active electronic components are conductively coupled to the multi-speed rotary machine, wherein one or more of Active electronic component is conductively coupled to one or more terminals of the machine,

One or more of active electronic components are configured as modulating received supply voltage to generate driving signal, and The driving signal is passed into the multi-speed rotary machine,

The driving signal includes voltage and frequency；

Wherein, one or more of active electronic components are configurable to generate the driving signal including following one:

A, the variation voltage with constant frequency,

B, with the change frequency of constant voltage,

C, the variation voltage with change frequency.

Term speed used herein is related to rotation speed.Term speed and revolving speed will be used alternatingly in following description. Here the revolving speed defined is related to the revolving speed of the rotor as motor a part.Term electromotor velocity is for indicating rotor speed Degree, the i.e. revolving speed of the drive shaft of rotor and motor.This is equally likely to the revolving speed of fan.Term electromotor velocity and spinner velocity It is used interchangeably in the following description, and is meant to be identical.

Detailed description of the invention

The embodiment of the present invention is illustrated by way of example with reference to the drawings, in which:

Fig. 1 shows the humidity control system including thermostat apparatus.

Fig. 2A shows the electrical schematics of thermostat apparatus, which can be used together with humidity control system Or a part as humidity control system uses.

Fig. 2 B is to show the internal logic of the embodiment for cooling and heating valve of the humidity control system for control figure 1 Exemplary logic diagram.

Fig. 3 shows the electrical schematics to form the motor driver of a part of thermostat apparatus.

Fig. 4 shows the electrical signal of the speed control when speed control is to change voltage constant frequency mode operation Figure.

Fig. 5 shows the electrical signal of the speed control when speed control is with constant voltage change frequency mode operation Figure.

Fig. 6 shows the electrical signal of the speed control when speed control is to change the operation of voltage change frequency mode Figure.

Fig. 7 shows the electrical schematics to form the temperature controller of a part of thermostat apparatus.

Fig. 8 shows the curve graph of the measurement temperature in example hysteresis band and hysteresis band.

Fig. 9 shows the schematic diagram of the connection between motor driver and motor, and wherein motor driver includes Frequency converter or coloinverter.

Figure 10 shows the connection of the alternate embodiment between motor driver and motor, wherein motor driver packet Include power factor (PF) calibrator.

Figure 11 show by motor generate counter electromotive force and back-emf signal each zero crossing generate The curve graph of square pulse.

Figure 12 shows the embodiment of the method for calibration speed sensor.

Figure 13 shows the embodiment of the method using humidity control system conditioned space temperature, and the humidity control system is also Including thermostat apparatus.

Figure 14 shows another embodiment of the method using humidity control system conditioned space temperature, which is adjusted System further includes thermostat apparatus.

Specific embodiment

This disclosure relates to a kind of thermostat apparatus, is used as a part of humidity control system, such as heating, ventilation and sky Adjusting system (HVAC system).Thermostat apparatus is used as a part of HVAC system, and is configured to control one of HVAC system Or multiple components are to adjust the temperature in space.For example, thermostat apparatus be used as HVAC system a part, with adjust room, House, factory, making space, laboratory, medical clinic, hospital ward, office, building floor, shop or any other The temperature of this space-like.

It is used together with humidity control system or the perseverance of a part as humidity control system present disclosure also relates to a kind of Warm device device, wherein humidity control system is configured as adjusting the temperature in space, which revolves including at least multi-speed Favourable turn device, thermostat apparatus includes: one or more active electronic components, is conductively coupled to power supply, and one or more has Source electronic building brick is configured as receiving supply voltage, and one or more active electronic components are conductively coupled to multi-speed rotary machine, Middle one or more active electron component is conductively coupled to one or more terminals of machine, one or more active electron component quilts It is configured to modulate received supply voltage to generate driving signal, and driving signal is passed into multi-speed rotary machine, driving letter Number include voltage and frequency, and, wherein one or more active electronic components be configured as generate driving signal, the driving Signal includes following one: the variation voltage with constant frequency, or the constant voltage with change frequency, or has variation frequency The variation voltage of rate.

With reference to Fig. 1, it illustrates humidity control system 100, which is used to adjust the temperature in space 102. System 100 includes the inlet duct 110 and outlet conduit 112 being in fluid communication with each other.Return air 114 is inhaled by inlet duct 110 Enter, and supplies 116 and conveyed via outlet conduit.Air in space 102 can cycle through humidity control system 100, with The temperature in space 102 is maintained at selected or scheduled reference temperature.

Humidity control system 100 further includes channel 120, and channel 120 is between inlet duct 110 and outlet conduit 112. Channel 120 includes that the entrance opening 122 being in fluid communication with inlet duct 110 and the outlet being in fluid communication with outlet conduit 120 are opened Mouth 124.Channel 120 may include inlet manifold (not shown), which is located at entrance opening, which can To be connected to multiple inlet ducts.Channel 120 may also include outlet manifold (not shown), be located at exit opening 124, out Mouth opening 124 may be connected to multiple outlet conduits.

Referring again to FIGS. 1, humidity control system 100 further includes heat exchanger 130, it is configured to keep heat exchange material Reservoir 140 and fan component 150.As shown in Figure 1, heat exchanger 130 and fan component 150 are located in channel 120, so that Air from entrance opening 122 passes through and passes through heat exchanger 130 and enters fan component 150.Heat exchanger 130 is configured To promote the thermal energy exchange between air and heat exchanger.In the embodiment shown in fig. 1, heat exchanger 130 is configured to cold But the air duct of heat exchanger 130 is passed through.Fan component 150, which is configured to for driving pressure being applied to, is arrived fan component On air in 150.Fan component 150 is configured to release outlet conduit 112 for cooling air as gas supply 116.

As shown in Figure 1, humidity control system 100 includes filter 160, filter 160 is arranged under inlet duct 110 The downstream of trip and entrance opening 122.Filter 160 is located at the upstream of heat exchanger 130 and fan component 150.Filter 160 is Dust filter, such as HEPA filter.Filter 160 is configured to filter out from the air by channel 120 such as grey Dirt, airborne particle, hair and other particulate matters particulate matter.Filter 160 prevents or reduces particulate matter Amount, so that fan component 150 will not be blocked or stop in operation.

Heat exchanger 130 will be described in further detail now.As shown in Figure 1, heat exchanger 130 is shell-and-tube exchanger. Heat exchanger 130 includes the hollow shell 132 for accommodating coil pipe 134.Coil pipe 134 is as shown in Figure 1 including multiple return bends Single pipe.In the shown embodiment, pipe 134 includes seven return bends but it is alternatively possible to include any appropriate number of U Shape elbow, this depends on the size of required heat exchanger and required heat exchange amount.Coil pipe 134, the especially packet of coil pipe 134 The part for including return bend defines heat transfer region 139.In refrigerating mode, the air by channel 120 is passing through heat transfer region It is cooled when 139, i.e., when air passes through the return bend in coil pipe 134.In heating mode, if heat exchange is more than air Heat is then heated by the air in channel 120.

Heat exchanger 130 further includes inlet leg portion 136 and outlet leg portions 138.Inlet leg portion 136 connects at one end It is in fluid communication to coil pipe 134 and with coil pipe 134, and enters shell 132 from side.Outlet leg portions 138 with inlet leg portion 136 opposite one end are connected to coil pipe 134 and are in fluid communication with it.Outlet leg portions 138 are from the entrance of inlet leg portion 136 Leave shell 132 in opposite side.As shown in Figure 1, inlet leg portion 136 and outlet leg portions 138 can be whole with coil portions 134 It is formed.Alternatively, inlet leg portion 136 and outlet leg portions 138 can be connected to the independent pipe of coil pipe 134.

Heat exchanger 130 and reservoir 140 are in fluid communication.Inlet leg portion 136 and outlet leg portions 138 are connected to storage Device.Fluid channel is formed between reservoir 140 and coil pipe 134 by inlet leg portion 136 and outlet leg portions 138.Storage Device is suitable for receiving and keeping heat exchange material.In the embodiment shown in fig. 1, heat exchange material is cold water.Cold water is sent to In heat exchanger 130 and cooling passes through the air of heat exchanger 130.Cold water is introduced into coil pipe 134 simultaneously via inlet leg portion 136 Reservoir 140 is returned to via outlet leg portions 138.Cold water flows through inlet leg portion 136, coil pipe 134, outlet leg portions 138 And return to reservoir 140.

System 100 includes at least one valve 170 on inlet leg portion 136.In order to describe preferred reality of the invention Example is applied, unless in addition especially referred to as cooling valve 170c or heating valve 170h, otherwise term valve 170 will include cooling valve 170c or add Thermal valve 170h includes valve 170c, 170h simultaneously, because some systems 100 will be implemented to provide cooling, heating or both.Base In sheet, it may include cooling or heating valve 170c, 170h valve 170 operates in a similar way, to lead to according to the needs of users It crosses controller and the different function being heated or cooled is provided.

In the exemplary embodiment as shown in Figure 1, there are two valves for system tool, wherein cooling valve 170c and heating valve 172h is between heat exchanger 130 and reservoir 140.In general, two valves 170 respectively optionally can in open position and It is moved between closed position.When valve 170 is in an open position, valve 170 allows heat exchange material to lead to heat friendship from reservoir 140 Parallel operation 130.In closed position, valve 170 prevents heat exchange material from leading to heat exchanger 130 from reservoir 140.The example shown in In, valve 170 is electronic control valve, such as solenoid valve.Valve 170 receives the actuating signal including status information, the status information packet ON state and OFF state are included, ON state moves the valve to open position, and OFF state moves the valve to closed position.In open position It sets, solenoid valve allows cold water to flow to heat exchanger 130 from reservoir 140, and in closed position, valve 170 prevents cold water from storage Storage 140 flows to heat exchanger 130.In turn, reservoir 140, when heat exchange material is transported to coil pipe by reservoir 140, Or it is also referred to as the equipment that can convey heat exchange material.Heat exchange material can effectively serve as coolant or heating agent.Such as Summarized in the example system 100, two control valves 170, i.e., cooling valve 170c and heating valve 170h, be present in system with Control which kind of heat exchange material passes through coil pipe.Final result is that, if cooling valve 170c is opened, heat exchange material flows through disk Pipe, thus the cooling air by heat exchanger.If heating valve 170h is opened, it is heated by the air of heat exchanger.

In one example, system 100 includes more than one valve 170, such as system 100 shown in Fig. 1, wherein existing Two valves 170 are constituted by cooling down valve 170c and heating valve 170h, and two valves 170 can be according to logic chart as shown in Figure 2 B It controls, wherein can be by user or program setting switch (S_valve) and cooling/heating selection, these signals are by logic device Reason, so that control valve 170 is to provide required be heated or cooled.

Fan component 150 will be more fully described with reference to Fig. 1.Fan component 150 includes motor 152 and fan 154.Electricity Motivation 152 is electrically connected to fan 154 and is mechanically coupled to fan 154 by drive shaft.Motor 152 is configured to certain Speed driving fan 154.Motor 152 is multiple-speed motor, and motor 152 is configured to selected revolving speed rotary fan. Multiple-speed motor 154 is the electric rotating motivation for generating rotation or rotary motion.Speed defined in this specification refers to revolving speed.Wind Fan 154 includes multiple fins.Fan 154 may include any appropriate number of fin to generate driving pressure to release out air Mouth pipeline 112.

Humidity control system 100 includes thermostat apparatus 200, and the thermostat apparatus 200 and 152 electronics of multiple-speed motor are logical Believe and is configured as control multiple-speed motor 152.Thermostat apparatus 200 and 152 electronic communication of multiple-speed motor and constant temperature Device device 200 is configured to control the operation of multiple-speed motor 152 and valve 170, to attempt and keep the reference temperature in space 102 Degree.

With reference to Fig. 1, thermostat apparatus 200 includes user interface 202.User interface 202 is located in space 102 and can be by User or personal visit.In one example, thermostat apparatus 200 can be set on wall in space or any other is suitable Structure on so that the accessible thermostat apparatus 200 of user.The reference temperature in the permission of user interface 202 user setting space 102 Degree.Reference temperature is temperature needed for space 102.User interface 202 is configured as one or more with thermostat apparatus 200 A component electronic communication.

Referring to figs. 2 to 11, thermostat apparatus 200 will be described in further detail.Fig. 2 shows the electrical of thermostat apparatus 200 Schematic diagram.Thermostat apparatus 200 is configured as being used together with humidity control system 100 or use as part of it.Constant temperature Device device 200 is conductively coupled to power supply 210, is AC power supplies.In the shown embodiment, power supply 210 is main power source, generates exchange Electric current and alternating voltage.Voltage is generated with assigned frequency.

Thermostat apparatus 200 is line voltage thermostat.Thermostat apparatus 200 is directly connected to main power source.Thermostat apparatus 200 are configured as generating driving signal by modulating from the received power supply signal of power supply 210.Thermostat apparatus be configured as with One of following modes generate driving signal:

A, the variation voltage with constant frequency,

B, with the change frequency of constant voltage,

C, the variation voltage with change frequency.

With reference to Fig. 2, thermostat apparatus 200 further includes motor driver 220, and motor driver 220 is conductively coupled to simultaneously It is configured to control multiple-speed motor 152.Motor driver 220 generates driving signal and provides drive to multiple-speed motor 152 Dynamic signal.Thermostat apparatus 200 includes the speed control 230 with 220 electronic communication of motor driver, and is driven to motor Dynamic device 220 provides reference signal.Difference between reference velocity and measuring speed of the reference signal based on motor.Based on from speed The reference signal for spending controller 230 generates driving signal.Thermostat apparatus further includes the speed with speed control electronic communication Sensor 240.Velocity sensor 240 determines the speed of motor and the feedback of electromotor velocity (being labeled as ω) is supplied to speed Spend controller 230.Temperature controller 250 and speed control 230 carry out electronic communication.Temperature controller 250 is provided with reference to speed Degree (is labeled as ω_ref) arrive speed control 230.Temperature controller 250 provides actuating signal and (is labeled as S_valve) with operation valve 170, and in there is heating and cooling system, it is then depending on desired temperature, temperature controller is in addition to activating signal Except can also provide signal is heated or cooled, to operate cooling valve 170c or heating valve 170h.Driving signal for changing The speed (i.e. revolving speed) of multiple-speed motor 152.The component of the thermostat apparatus 200 is arranged in shell 260.Shell 260 can be Metal or plastic housing.It is described in more detail below the details of thermostat apparatus 200.

As described above, motor driver 220 provides driving signal to multiple-speed motor 152.Driving signal includes driving Voltage and driving frequency.It include reference voltage (labeled as V by the reference signal that speed control 230 generates_ref) and reference frequency (it is labeled as f_ref).Driving voltage or driving frequency or both are adjusted based on reference signal.Specifically, based on received with reference to electricity Press V_refDriving voltage is adjusted, and is based on reference frequency f_refAdjust driving frequency.Specifically, motor driver is configured To provide driving signal with one of following modes:

A, the variation voltage with constant frequency (VVCF mode),

B, the change frequency with constant voltage (CVVF mode),

C, the variation voltage with change frequency (VVVF mode).

The speed of multiple-speed motor is based on received driving voltage and driving frequency.Motor driver 220 is based on reference The received power supply of signal modulation is to generate driving signal, and specifically, motor driver 220 is configured as modulation power source signal Voltage or frequency or both.

Motor driver 220 is also conductively coupled to power supply 210 and is configured as receiving power supply signal from power supply 210.Electricity Motivation driver 220 is directly connected to multiple-speed motor, so that all voltages of driving signal are all transported to multiple-speed motor 152.As shown in Fig. 2, can have built-in partial pressure device assembly in thermostat apparatus 200 or motor 152.Divider is bypass And it is not used.

Motor driver 220 may include frequency converter, coloinverter or power flow controller.Motor driver 220 include the component depending on hard-wired cost, rated power, heat dissipation, amplitude or noise and dimension constraint.

Fig. 3 shows the embodiment of motor driver 220.Fig. 3 shows the schematic diagram of motor driver 220.Electricity Motivation driver 220 includes switching network 221 comprising such as triode ac switch, diode, the function of power MOSFET etc. Rate electronic device.These components are organized in together to form electric switch network 221.Switching network effectively serves as actuator To carry out shaping to motor voltage and its corresponding frequency.Based on the gate signal generated by driver feedback controller 224 come Operation switch network 22.Gate signal limits the switching mode of switching network 221, so that switching network output includes driving voltage Appropriate driving signal and driving frequency.

Motor driver 220 further includes passive network comprising the passive element of such as capacitor and/or inductor. Passive network is connected to switching network.Passive network to eliminate pulsating volage and electric current, and improves EMI as low-pass filter Performance.Passive network also reduces the due to voltage spikes that may cause due to the coil in motor 152.

Motor driver 220 includes command signal generator 222.Command signal generator 222 includes circuit appropriate, For generating the command signal for being supplied to voltage comparator 223 (labeled as V_cmd(t)).Command signal is based on received with reference to letter Number generate, specifically, be based on received reference voltage V_refWith reference frequency f_refIt generates.Reference signal is by speed control 230 It is generated and provided to command signal generator 222.The command signal V of generation_cmdIt (t) is different for each driving signal mode 's.Table 1 below illustrates the relationships between driving signal mode and command signal.

Table 1

f_NIt is the nominal frequency of the motor as unit of Hz, V_NIt is the nominal RMS electricity of the motor as unit of volt Pressure.

In VVCF mode, Motor Control engine only changes motor voltage V_Motor, and the frequency f of motor_Motor Keep the nominal frequency f with motor_NIt is identical.Under CVVF mode, Motor Control engine only changes motor frequency f_Motor, and motor voltage V_MotorKeep the nominal RMS voltage V with motor_NIt is identical.Under VVVF mode, Motor Control Engine changes motor voltage and frequency.In general, motor voltage V_MotorWith frequency f_MotorBetween ratio keep with it is electronic Machine nominal voltage V_NWith nominal frequency f_NBetween ratio it is identical, to realize constant flux operation, i.e.,

As shown in figure 3, motor driver 220 further includes motor driver comparator 223.Motor driver compares Device 223 generates error signal_v, it is provided to driver feedback controller 224.Error signal is instruction voltage signal V_cmd (t) and sampling motor voltage V_motorBetween difference.Driver feedback controller 224 includes circuit appropriate, and driver Feedback controller 224 is configured as error signal being suppressed to zero.Driver feedback controller 224 exports switching molding appropriate Formula is output to the gate signal of switching network 221.Driver feedback controller 224 can be PID controller or any other conjunction Suitable controller.

As shown in Fig. 2, thermostat apparatus 200 further includes the speed control with 220 electronic communication of motor driver 230.Speed control 230 is additionally configured to provide reference signal to motor driver 220.Reference signal is based on multi-speed electricity Difference between the reference velocity and measuring speed of motivation 152.Reference velocity be based on measurement temperature and reference temperature between difference, Wherein reference temperature is arranged by user by user interface 202.

Speed control 230 is configured as reference velocity (that is, with reference to electromotor velocity) being mapped to reference signal.Especially Ground, speed control 230 are configured as reference velocity ω_refIt is mapped to reference voltage V_refWith reference frequency f_ref.According to electronic The type of machine driver 220, speed control 230 can produce reference voltage appropriate and reference frequency appropriate.Speed control Device 230 processed includes speed control comparator 231 and reference feedback controller 232.Comparator is described with reference to Fig. 4, Fig. 5 and Fig. 6 231 and reference feedback controller 232 operation.

Fig. 4 shows the speed control when motor driver 220 is with VVCF (variation voltage constant frequency) mode operation The arrangement of device 230.Fig. 4 is the schematic diagram of the internal module of speed control 230.As shown in figure 4, comparator 231 receives reference Speed and measuring speed.Speed control 230 receives reference velocity from temperature controller 250 and receives from velocity sensor 240 Measuring speed.Comparator 231 generates speed error signal ε_ω.Reference feedback controller 232 receives speed error signal and generates Reference voltage signal V appropriate_ref.Reference feedback controller is configured as by changing motor voltage set point, i.e., by changing Become reference voltage and carrys out compensation speed error.Reference frequency f_refWith the frequency constant of motor therefore.Reference frequency setting For nominal frequency f_N.Nominal frequency in the embodiment of Fig. 4 can be main electric frequency, for example, 50Hz or any other is suitable Frequency.

Fig. 5 shows the speed control when motor driver 220 is with CVVF (constant voltage change frequency) mode operation The arrangement of device 230.Fig. 5 is the schematic diagram of the internal module of speed control 230.As shown in figure 5, comparator 231 receives reference Speed and measuring speed.In this mode, comparator generates error based on the difference between received reference velocity and measuring speed Signal.Reference feedback controller 232 generates reference frequency f appropriate_ref.Reference feedback controller is by changing reference frequency f_ref Carry out compensation speed error signal.Reference voltage V_refIt keeps constant, is nominal motor voltage V_N。

Fig. 6 shows the speed control when motor driver 220 is with VVVF (variation voltage change frequency) mode operation The arrangement of device 230.Fig. 6 is the schematic diagram of the internal module of speed control 230.With reference to Fig. 6, comparator 231 generates error letter Number, the difference between reference velocity and measuring speed is related.Reference feedback controller 232 is by changing motor set point electricity Press (i.e. reference voltage V_ref) and setting dot frequency (i.e. reference frequency f_ref) carry out compensation speed error.Reference voltage and reference frequency Between ratio keep constant, can be with motor nominal voltage V_NWith nominal frequency f_NBetween ratio it is identical, to realize perseverance Fixed flux operation.

As discussed previously with reference to Fig. 2, thermostat apparatus 200 includes velocity sensor 240.240 quilt of velocity sensor It is configured to provide motor speed omega (i.e. fan speed) signal to speed control 230.In one embodiment, velocity pick-up Device 240 includes tachometer.Tachometer can be positioned in fan component 150.Tachometer can be positioned in motor 152 or wind It fans on 154 or is located in and motor is connected in the drive shaft of fan.Tachometer is configured as measurement motor (or wind Fan) speed, and with revolutions per minute return measurement velocity amplitude.The actual speed of tachometer measurement motor.Preferably, speed Sensor 240 includes tachometer.Alternatively, if back-EMF determination can be used without tachometer.Back-EMF determination process will It is described in the description of alternative embodiment below.Direct velocity sensor, such as tachometer or accelerometer is preferably used.

Temperature controller 250 is electrically connected with temperature sensor 180.Temperature sensor 180 is located in space 102.Temperature passes Sensor 180 can be located in thermostat apparatus shell 260.Temperature sensor 180 is any suitable type of temperature sensor, such as heat Quick resistance or thermometer or thermoelectricity occasionally temperature sensing IC.

With reference to Fig. 7, it illustrates the embodiments of the component or module of temperature controller 250 and temperature controller 250.Fig. 7 Show the exemplary architecture of temperature controller 250.Temperature controller 250 is configurable to generate reference velocity ω_ref, it is based on Difference between reference temperature and measurement temperature.Temperature controller 250 includes temperature comparator 252.Temperature controller 250 is from user Interface 202 receives reference temperature T_ref.Temperature controller receives measurement temperature T from temperature sensor 180_room.Temperature comparator Size between 252 comparison reference temperature and measurement temperature.Specifically, temperature comparator 252 determines reference temperature T_refAnd measurement Temperature T_roomBetween difference.Temperature comparator 252 generates temperature error signals.Temperature controller 250 further includes temperature feedback control Device 254 and hysteresis controller 256 processed.Temperature feedback controller 254 generates reference velocity ω by minimizing error signal_ref.Such as Fruit reference temperature is higher than the measurement temperature in room, then temperature controller 250 (and temperature feedback controller 254) is reduced with reference to speed Degree.On the contrary, temperature controller 250 increases reference velocity if reference temperature is less than measurement temperature.

Temperature controller 250 is additionally configured to generate actuating signal S_valveAnd signal S will be activated_valveIt is transferred to valve 170. Activate signal S_valveIncluding status information related with the state of valve 170.Status information includes ON state and OFF state.Such as Fig. 7 Shown, temperature controller 250 further includes hysteresis controller 256.Hysteresis controller 256 is based on temperature error signals (i.e. with reference to temperature Difference between degree and measurement temperature) output actuating signal S_valve.Under ON state, valve 170 is opened to allow cold water to enter hot friendship Parallel operation 130.In the off condition, valve 170 closes and prevents cold water from flowing to heat exchanger 130.

It is arranged in temperature controller 250 and is operated together with the system with both cooling valve 170c and heating valve 170h In order to provide in cooling or heating function example, temperature controller is also arranged to be embodied as valve management as shown in Figure 2 B to patrol Device 280 is collected, or is connect with valve management logic device 280 as shown in Figure 2 B, in addition to activating signal S_valveExcept also mention For the additional input of instruction is heated or cooled.It as shown in Figure 2 B and as previously mentioned, can be by logic gates, hardware, software Or combinations thereof realize logic device be arranged to processing input signal so that when input actuating signal S_valveWhen cooling valve or add When thermal valve is activated.

Hysteresis controller 256 is suitable in measurement temperature T_roomON state is generated when greater than upper threshold, and in measurement temperature Spend T_roomOFF state is generated less than bottom threshold.Upper threshold is related to the predetermined upper limit value in temperature lag band, and bottom threshold relates to And the predetermined lower bound value in temperature lag band.Fig. 8 shows exemplary hysteresis band 258.As shown in figure 8, hysteresis band is around reference Temperature T_refConstruction.Hysteresis band includes upper threshold T_HWith bottom threshold T_L.The predetermined threshold upper limit and bottom threshold are to realize expectation Hysteresis band.Requirement selection upper threshold and bottom threshold based on humidity control system 100.

Fig. 8 shows the exemplary operations of hysteresis controller 256.Fig. 8 show whithin a period of time measurement temperature relative to The curve graph of hysteresis band 258.When temperature is more than upper threshold T_HWhen, generate the actuating signal S including ON state_valve.Work as temperature Drop below bottom threshold T_LWhen, generate the actuating signal S including OFF state_valve.Hysteresis controller 256 reduces valve 170 Mistake switches and reduces the trembling in valve since any fast temperature changes.In addition, the reduction of the mistake switching of valve 170 is also The service life of valve will be maximized, because the frequent switching of valve will reduce the service life of valve.

Referring again to FIGS. 2, thermostat apparatus 200 further includes 272 (I of AC load current sensor_AC).The sensor measurement by The electric current that motor driver 220 is drawn.If the electric current drawn is lower than first threshold, or preferably, when the electric current drawn When greater than second threshold, AC load current sensor 272 also can produce alarm or disabling motor driver 220.This is that have Benefit, because if the electric current drawn is more than that then motor will be protected and reduce the wind for damaging motor some threshold value Danger.AC load current sensor is the current sensor of any suitable type, such as resistive current sensor, Hall effect IC electricity Flow sensor or current transformer.

Thermostat apparatus 200 further includes AC grid voltage sensor 274.AC grid voltage sensor 274 measures power grid electricity Press V_ACAnd network voltage is supplied to motor driver 220.If power factor (PF) calibrator is used for motor driver, AC electricity Net voltage sensor 274 is useful.Based on sampled voltage, RMS (root mean square) network voltage and mains frequency are determined.AC power grid Voltage sensor 274 is any suitable voltage sensor, such as the non-isolated resistive divider network with difference amplifier. Alternatively, partition method realization can be used in AC grid voltage sensor 274, such as optoisolated sigma delta modulator is based on voltage Sensor or the voltage transformer of linear light coupler or any other suitable sensor.

Thermostat apparatus 200 further includes AC motor voltage sensor 276.AC motor voltage sensor 276 is configured To measure motor voltage V_motor.Motor voltage value or signal are supplied to motor driver 220 and velocity sensor by it. Voltage signal based on sampling, determination will be supplied to the RMS motor voltage and frequency of motor.AC motor voltage sensor 276 can be implemented as any suitable voltage sensor.For example, AC motor voltage sensor 276 may include in structure and It is functionally similar to the sensor of AC grid voltage sensor 274.

As shown in Fig. 2, thermostat apparatus 200 includes AC load current sensor 278.AC load current sensor 278 is surveyed Measure the motor current I drawn by motor 152_motor.If motor current I_motorRated value is more than its rated power, electricity The operation of motivation driver 220 will be disabled, to protect motor driver 220.

Multiple-speed motor 152 is described below.In VVCF mode, the voltage V from motor driver 220_sIt (supplies Answer voltage) it is adjustable to adjust the speed (i.e. revolving speed) of motor 152 and therefore adjusts the revolving speed of fan 154.In VVCF mode In, motor driver 220 changes voltage and the frequency that keeps constant.The voltage of motor 152 is supplied to by increase to increase Add electromotor velocity, and the voltage of motor 152 is supplied to reduce electromotor velocity by reduction.It is applied to motor 152 torque and the supply voltage V for being supplied to motor 152_sIt is proportional.

In CVVF mode, by adjusting supplied frequency f_STo control the speed of motor 152.By reducing supplied frequency To increase the torque of motor generation.However, the synchronizing speed of motor reduces, the speed of motor 152 is caused to reduce, thus Reduce the speed of fan 154.However, only changing supplied frequency may have with the speed for controlling motor 152 due to reactance The electric current for increasing and motor being caused to draw increases generated highly conductive loss problem.It is also led in addition, only increasing frequency Magnetic flux increases, and causes magnetic saturation to increase, so as to cause high current.If load current is more than rated current, increased electricity Stream may cause overheat.

In order to reduce the speed of motor or rotor with supplied frequency, low supply voltage should also drop to prevent magnetic full With.Due to magnetic saturation problem, CVVF mode is rarely employed.Therefore, if it is desirable to change frequency, then VVVF mode ratio CVVF mode It is more highly preferred to control motor.The mode that motor driver 220 uses depends on the class of used multiple-speed motor 152 Type.In VVVF mode, voltage V is supplied_SWith supplied frequency f_SBetween ratio keep constant, therefore magnetic flux near constant.In Under VVVF mode, the speed of motor or rotor can be controlled by adjusting supplied frequency or adjusting supply voltage or both.

Active circuitry thermostat apparatus 200 changes the electric condition of motor in the case where not using divider.It is electronic Machine driver 220 is directly connected to the stator winding of motor 152, to eliminate loss relevant to divider network.This Outside, described thermostat apparatus 200 is configured as allowing the electricity based on motor 152 is supplied to by motor driver 220 Pressure and frequency carry out speed control in broader velocity interval.Thermostat apparatus 200 as described herein is better than the prior art Speed control unit because the thermostat apparatus of the application is not limited to discrete velocity and adjusts and allow the speed of wide scope. The sole limitation that speed can be achieved is the mechanical factor of motor, such as frictional force, weight.

For current thermostat apparatus 200 shown in figure, motor driver 220 includes that frequency converter or two-way ion become Frequency device.Fig. 9 shows the schematic diagram of the connection between motor driver 220 and motor 152, wherein motor driver packet Include frequency converter or coloinverter.Motor driver 220 receives the supply voltage of supplied frequency from power supply 210.Such as Fig. 9 Voltage V that is shown, being provided by motor driver 220_x(i.e. the voltages at 220 both ends of motor driver) are equal in motor Received stator voltage V at 152_S.As shown in figure 9, the supply voltage from motor driver 220 is equal to stator voltage.Base In the received reference voltage of institute and reference frequency, supplied voltage is directly adjusted by motor driver 220 in a continuous manner V_xAnd/or its frequency.Electromotor velocity is continuously adjusted by motor driver 220.This makes described thermostat apparatus 200 Better than prior art systems, because it provides the continuous control to motor 152.Since thermostat continuously adjusts cold air Level, motor driver 220 are that space 102 provides improved temperature control to the continuous velocity control of motor.

Further advantage is that due to the structure of thermostat apparatus 200, and especially because motor driver 220 are directly connected to motor 152, and voltage and current direct supplies to motor, and motor 152 can be with driven speed Degree range is extended.The velocity interval of motor 152 in thermostat apparatus 200 depends on the defeated of motor driver 220 Out, i.e. V_x.Velocity interval depends on the supply voltage of the motor driver comprising frequency converter or coloinverter, determines Justice is as follows:

Driven at low speed: V_x< V_AC-I_{s_low}(Z_low+Z_mid)

High-speed driving: V_x> V_AC

As shown in figure 9, since the output of motor driver 220 is directly connected to the stator of motor 152, so not using Z_lowAnd Z_mid.Including two impedance Zs_lowAnd Z_midTwo divider be merely displayed in dotted line frame.Stator voltage is independently of electric current I_S And impedance Z_lowAnd Z_mid.Divider network as shown in Figure 9 shows two impedance value Z_lowAnd Z_midMotor can be built in In 152.However, in the present embodiment, the power supply from motor driver 220 is directly connected to motor winding and around excessive Depressor network.Driven at low speed voltage is the minimum voltage that can be provided and related with minimum speed.High-speed driving voltage is can With the maximum voltage of offer, and it is related with the maximum speed of motor.If motor driver 220 includes frequency converter or double To ion converter, then this voltage is possible.Figure 10 shows the alternate embodiment of motor driver, and makees later It is described for alternate embodiment.

As previously mentioned, velocity sensor 240 includes tachometer or any other suitable sensor, motor is determined The revolving speed of (i.e. rotor or fan).Velocity sensor 240 includes look-up table, and the look-up table is by motor speed omega and supplies voltage (V) and supplied frequency (f) is associated.The supply voltage and supplied frequency are provided by motor driver 220.What is created looks into Table is looked for can store in speed control 230 or in motor driver 220.Look-up table can be alternatively stored in and speed In controller 230 or the memory cell of any communication of motor driver 220.Look-up table is in the velocity sensor calibration process phase Between create.

Figure 12 shows the embodiment of calibration method.Calibration method 300 shown in Figure 12 is to be related to tachometer speed biography The calibration method of sensor.This method is executed by velocity sensor 240.

With reference to Figure 12, this method starts from step 302, and alignment is initialised.User can pass through user interface 202 Start calibration method.Optionally, some other suitable in speed control or motor driver or thermostat apparatus 200 Component is configured as the initial calibration process during starting.

In step 304, the set point of motor driver 220 is set as maximum value.In step 304, speed control 230 are configured to supply the reference signal including maximum value reference voltage and maximum value reference frequency.Therefore, motor driver 220 generate the driving signal including maximum value voltage and maximum frequency.

In step 306, velocity sensor 240 (being in this example tachometer) is configured as reading motor (i.e. rotor Or fan) rotation speed.In step 308, look-up table is created by speed control or motor driver.It, will in step 308 Driving voltage value relevant to measurement revolving speed, driving current value and the storage of driving frequency value are in the table.Driving voltage, driving electricity Stream and driving frequency store in such a way that they are related to measurement revolving speed and associated with measurement revolving speed.

In step 310, reference signal (i.e. reference voltage and reference frequency) is successively decreased.This leads to driving signal (i.e. driving electricity Pressure and/or driving frequency) accordingly successively decrease.Mode of the parameter successively decreased based on motor driver 220.In step 312, execute Whether set point is greater than the inspection of minimum threshold.Inspection can be executed by speed control 230 or motor driver 220.Such as Shown in step 314, calibration process is completed if reference signal value and/or drive signal value are less than minimum threshold.Thermostat dress Set 200 recoveries normal operation.If reference signal value and/or drive signal value are greater than minimum threshold, method proceeds to step 316, wherein driving signal is transferred to motor 152 and this method is waited until motor 152 reaches stable state.Once Reach stable state, this method just proceeds to repetition step 306 to 312, until calibration method is completed.For motor driver Each pattern, minimum threshold is different.Following table illustrates the ratio of maximum (Max) driving voltage and frequency, minimum threshold (Min) and the example of decrement step size (Step-size).These values are expressed as nominal voltage V_NWith frequency f_NRatio.It see the table below 2:

Table 2

As it will appreciated by a person of ordinary skill, these values in table 2 are example values.There may be other to depend on Mr. Yu for this The value of a little external factors, the specification of such as motor or the required resolution ratio of table.For example, motor can be lower than V_N50% Or it is lower than f_N50% frequency carry out driven at low speed.If it is preferred that higher resolution ratio, step-length can be reduced, such as subtract It is small to 1%.

As shown in Figure 1, humidity control system 100 is configured to be compared by that will measure temperature with reference temperature, so Operation valve 170 and/or fan 154 are afterwards with the heat of the air in cooling supply space, to maintain the temperature in space 202.Thermostat Device 200 is suitable for a part of humidity control system 100 and the temperature for maintaining space 202.Thermostat apparatus 200 Suitable for the operation by controlling fan based on the feedback drive motor of measurement fan speed.Thermostat apparatus 200 is also direct Power supply is connected to motor, and continuously controls the operation of motor in broader velocity interval.

Figure 13 shows the embodiment of the method 400 using humidity control system conditioned space temperature, and wherein temperature is adjusted System includes the thermostat apparatus with multiple-speed motor electronic communication.Method 400 includes the steps that initialization system 100 402.In Step 404, it is sampled using temperature of the temperature sensor to space.In step 406, activationary temperature controller 250.Temperature control Device 250 processed works as previously described to generate reference velocity ω_refAnd reference velocity is transmitted to speed control 230.Temperature control Device 250 processed alternatively or with the reference velocity of generation combines, and temperature controller 250 also generates actuating signal S_valveWith open or Close valve 170.In step 408, velocity sensor determines measurement electromotor velocity and measurement motor speed omega is supplied to speed Spend controller 230.Reference signal and offer including reference voltage and reference frequency are generated in step 410 speed control 230 Reference signal is to motor driver 220.In step 412, adjusting motor driver is to generate driving signal appropriate, the drive Dynamic signal includes driving voltage and driving frequency to control motor 152.Step 404 is repeated to step 412.

Figure 14 shows another embodiment of the method 500 using humidity control system conditioned space temperature, the temperature tune Section system includes the thermostat apparatus with multiple-speed motor electronic communication, wherein method includes the following steps: in step 502, Measurement temperature is received from temperature sensor, receives reference temperature from the user in step 504.Step 506 includes determining reference Difference between temperature and measurement temperature.Step 508 includes determining reference velocity based on the difference between reference temperature and measurement temperature. Step 510 includes the measuring speed that multiple-speed motor is determined from velocity sensor 240.Step 512 include determine reference velocity and Difference between measuring speed.Step 514 includes being produced by speed control 230 based on the difference between reference velocity and measuring speed Raw reference signal.Step 516 includes generating driving signal based on reference signal.Finally, step 518 includes transmitting driving signal To multiple-speed motor to drive multiple-speed motor.Method described in Figure 14 is preferably real by thermostat apparatus 200 and its component It is existing.Method 500 causes the adjusting of space temperature.Method 500 also continuously controls motor and continuously adjusts driving signal (i.e. Driving voltage and/or driving frequency) motor is arrived, to provide improved or better Motor Control and improved temperature control System.This method 500 can be repeated by thermostat apparatus 200.

In alternative embodiments, heat exchanger 130 includes heat-exchangers of the plate type comprising what is positioned adjacent to each other is multiple Plate.In another alternative solution, heat exchanger can be shell-and-plate heat exchanger or phase change type heat exchanger or micro channel heat is handed over Parallel operation or direct heat exchanger or transfer-type heat exchanger or any other suitable can be are led to for cooling pass through The heat exchanger of the air in road 120.

In alternative embodiments, heat exchange material is coolant, such as hydraulic fluid.Heat exchange material may include fluid or Gas or liquid coolant.Heat exchange material is preferably the fluid colder than the operating temperature range in room.Heat exchange material quilt It is configured to the cooling air for flowing through heat exchanger.In another alternate embodiment, heat exchange material can be hot fluid or hot gas Body is configured as the air that heat exchanger is flowed through in heating.

In alternative embodiments, valve 170 is proportioning valve.Proportioning valve includes movable member, can be in open position and pass It is moved between closed position.Movable member can also move between any middle position between the open and closed positions, make Obtaining movable member can partially open.Proportioning valve allows any suitable or predetermined volume heat exchange material to be transported to hot friendship Parallel operation.It include the location information of movable member by the actuating signal that temperature controller generates.Actuating signal moves movable link It moves to the predetermined position between fully open position and fully closed position.The location information of valve member and reference temperature and measurement Temperature difference between temperature is related.The location information of valve member can be predefined and stored it in look-up table.Temperature control Device processed is configured as generating the actuating with valve member location information appropriate based on the difference between reference temperature and measurement temperature Signal.Temperature controller is configured to select valve member location information from look-up table and is encoded to actuating signal.

In another alternate embodiment, valve 170 can be any other suitable electronic activation valve, such as electromechanical check-valves Or the electronic activation or controlled valve of electromechanical butterfly valve or any other type.In alternative embodiments, humidity control system 100 can wrap Include multiple valves between reservoir and heat exchanger.

In alternative embodiments, fan component includes fan, linear motor and crank assemblies.Linear motor passes through song Handle component is connected to fan, with rotation or rotary motion driving fan.Linear motor can be used instead of standard rotary electric Machine, because linear motor can be smaller or be easier to control.In this alternative embodiment, fan component may also include by electricity The piston of motivation driving or linear " fan " of plunger shape.Linear piston or plunger pressure is applied in air stream with will be cold Air releases outlet conduit 112.

In another alternate embodiment, motor driver 220 may include power factor (PF) calibrator.Power factor (PF) calibrator Can be implemented as include multiple electric circuitry packages hardware module.Electric circuitry packages can be analog or digital electronics group Part.Alternatively, power factor (PF) calibrator can be implemented as the software module in motor driver 220.Power factor (PF) calibrator is used In calibration power factor (PF), since power supply is alternating current (i.e. alternating current and voltage), replace in specific frequency.

Figure 10 shows the schematic diagram of the alternate embodiment of motor driver 220.In this alternative embodiment, motor Driver includes power factor (PF) calibrator as described above.Figure 10 shows the electricity between motor and motor driver 220 Pressure and electric current.In this alternative embodiment, the voltage V at stator both ends_sEqual to supply voltage V_AC(i.e. motor drives with supply voltage Dynamic voltage) V_xBetween difference.In this embodiment, the speed of motor supplies voltage V still through change_xAnd/or its frequency is come Control.In this embodiment, the size of stator voltage and supply electric current and impedance Z_lowAnd Z_midIt is unrelated.As described above and as schemed Shown in 10, motor driver output is directly connected to motor (motor winding), around including Z_lowAnd Z_midDivider Network.By the voltage V for controlling motor driver 220_xTo adjust stator voltage V_s.Velocity interval can be in the following manner Definition:

Driven at low speed: V_x> I_{s_low}(Z_low+Z_mid)

High-speed driving: | V_AC-V_x| > | V_AC|

In alternative embodiments, velocity sensor 240 is configured as based on the counter electromotive force generated by multiple-speed motor 152 To determine or predict measuring speed (i.e. electromotor velocity).Due to the machinery inertial in motor 152 and fan 154, motor Rotor continue to rotate several circulations and generate the counter electromotive force that can detecte.

Figure 11 shows the curve graph of the counter electromotive force (i.e. counter voltage) generated by motor 152.Velocity sensor 240 wraps Zero-crossing detector is included, is configured to detect the zero crossing of back-emf signal.As shown in figure 11, square-wave pulse is in the zero crossing phase Between generate.The period of counter electromotive force is equal to two duration between signal continuously risen.Following formula can be used Estimate rotation speed:

ω_m≈ω

ω_mIt is the mechanical separator speed of rotor, unit is rad s^-1,

t_bIt is the measurement period for the counter electromotive force that unit is s,

P is the quantity of motor extremely pair.

Velocity sensor 240 is configured with above-mentioned formula and generates measuring speed.It includes referring to that velocity sensor 240, which generates, Show the signal of the information of electromotor velocity.It is the rotation speed of motor 152 using the speed that back-emf method is estimated.For The method calibration similar with method described in Figure 12 can be used in counter electromotive force velocity measuring, velocity sensor 240.Calibration side Reference signal (reference voltage and reference frequency) is adjusted to maximum value the following steps are included: initialization of calibration by method.Herein it Afterwards, any power supply of motor is closed, so that motor is as the dynamotor for generating counter electromotive force.It is estimated using above-mentioned formula The revolving speed of motor, the formula are associated with the period of counter electromotive force by speed.Look-up table is created, by driving voltage, driving Electric current and driving frequency are associated with rotation speed.Reference voltage and reference frequency press increments, thus make driving voltage and Driving frequency is also successively decreased.Calibration method checks whether reference voltage and/or reference frequency are less than minimum threshold.If not, so Once certain amount of decrement occurs, calibration process just terminates.If it is, providing driving signal, and system to motor Waiting returns to stable state until motor, then repeats the process.It is also contemplated that other calibration methods.

In the foregoing specification, any subgroup of the component of thermostat apparatus and comparator, generator, controller etc. Part can be with the simulation electronic component of resistor, inductor, capacitor, operational amplifier, MOSFET, transistor etc. come real It is existing.Alternatively, any sub-component of thermostat apparatus and comparator, generator, controller etc. can use such as logic gate Digital Electronic Module is realized.In another alternative solution, some or all of these components can be implemented as software module, Storage is in a memory cell and the hardware processor by residing in thermostat apparatus shell executes.Thermostat apparatus may include non- Temporary computer-readable medium, such as memory cell comprising the computer-readable instruction that can be executed by processor.

Term used herein is used only for the purpose of describing specific embodiments, it is not intended to the limitation present invention.Such as institute here It uses, singular " one ", "one" and "the" are also intended to including plural form, unless the context is clearly stated.It will It further understands, when used in this manual, term " includes " or "comprising" specify the feature, entirety, step, behaviour The presence of work, element, component and/or group or combinations thereof, but do not preclude the presence or addition of other one or more features, entirety, Step, operation, element, component and/or group or combinations thereof.

As used herein, term "and/or" includes any and all possible combinations or one or more related institute lists Mesh, and the combination lacked when being explained in alternative solution ("or").

Unless otherwise defined, otherwise all terms (including technical and scientific term) used herein have and institute of the present invention The identical meaning of the normally understood meaning of the those of ordinary skill in category field.It will be further understood that, it is fixed such as in common dictionary Those of justice term should be interpreted as having and its consistent meaning of meaning in the context of description and claims, and And it is not necessarily to be construed as idealization or meaning too formal.Unless explicitly defining herein.For brevity and/or clarity, may be used Well-known function or construction can be not described in detail.

It should be appreciated that when element is referred to as " on it ", " attachment ", " connection ", " coupling ", " contact " etc. another When element, it can be attached directly over, connect, couple and/or contact other elements, and there may also be insertion elements.Phase Instead, when an element be referred to as example " directly over ", " directly attachment ", " being directly connected to ", " directly coupling " or " directly connect When another element of touching ", exist without intermediary element.It will further be appreciated by those of ordinary skill in the art that being set to another feature " adjacent " The reference of the structure or feature set can have part Chong Die with adjacent feature or under adjacent feature.

It will be understood by those skilled in the art that in the case where not departing from broadly described the spirit or scope of the present invention, it can To carry out a variety of variations and/or modification to the present invention shown in specific embodiment.Therefore, the embodiment of the present invention is all Aspect is considered to be illustrative and be not restrictive.

Claims

1. a kind of thermostat apparatus, the thermostat is used together with humidity control system or as the humidity control system A part use, the humidity control system includes at least the multiple-speed motor that couple with fan, wherein thermostat dress It sets and includes:

Motor driver, is conductively coupled to the multiple-speed motor, and the motor driver is conductively coupled to power supply and is matched It is set to from the power supply and receives power supply signal,

Speed control, with the motor driver electronic communication, the speed control is configured to described electronic Machine driver provides reference signal, between reference velocity and measuring speed of the reference signal based on the multiple-speed motor Difference,

The reference velocity is set by the user based on the difference between measurement temperature and reference temperature, the reference temperature, and；

2. thermostat apparatus according to claim 1, wherein being supplied to the driving signal packet of the multiple-speed motor Include driving voltage and driving frequency, the reference signal includes reference voltage and reference frequency, and the wherein driving voltage And/or the driving frequency is adjusted based on the reference signal.

3. thermostat apparatus according to claim 1, wherein the driving signal passes through base by the motor driver The received power supply signal is modulated in the reference signal and is generated, and wherein the motor driver is configured as adjusting Make the power supply signal the voltage and/or the frequency.

4. thermostat apparatus according to claim 2, wherein the driving voltage is adjusted based on the reference voltage, and The driving frequency is adjusted based on the reference frequency.

5. thermostat apparatus according to claim 1, wherein the motor driver be configured as with following modes it One provides driving signal:

A, the variation voltage with constant frequency,

B, with the change frequency of constant voltage,

C, the variation voltage with change frequency.

6. thermostat apparatus according to claim 2, wherein the driving signal is based on the driving voltage and the drive Dynamic frequency controls the speed of the multiple-speed motor, wherein the speed of the multiple-speed motor and the driving voltage and/or institute State driving frequency correlation.

7. thermostat apparatus according to claim 1, wherein the speed control includes comparator, the comparator quilt It is configured to determine velocity error, wherein the velocity error is the difference between the reference velocity and the measuring speed, and Wherein the speed control is configured as generating reference signal based on the velocity error.

8. thermostat apparatus according to claim 7, wherein the speed control includes reference signal generator, it is described Reference signal generator is configurable to generate reference voltage or reference frequency or both reference voltage and reference frequency.

9. thermostat apparatus according to claim 1, wherein the thermostat apparatus includes and the speed control electricity The velocity sensor of son communication, the velocity sensor are configured to determine measuring speed and are transmitted to the speed control Device, and wherein the measuring speed corresponds to electromotor velocity.

10. thermostat apparatus according to claim 9 is configured as surveying wherein the velocity sensor is tachometer Measure instantaneous motor speed.

11. thermostat apparatus according to claim 9, wherein the velocity sensor is configured as based on when no electric power Or the counter electromotive force (EMF) generated when not being supplied to the multiple-speed motor driving signal by the multiple-speed motor determines institute Measuring speed is stated, and wherein the time cycle of the measuring speed and the counter electromotive force is inversely proportional.

12. thermostat apparatus according to claim 1, wherein the thermostat apparatus further includes temperature controller, it is described Temperature is configured as generating the reference velocity and is transmitted to the speed control, wherein the reference velocity is based on ginseng The difference examining temperature and measuring between temperature generates.

13. thermostat apparatus according to claim 12 is joined wherein the temperature controller is suitable for receiving from user interface Temperature is examined, the temperature controller is further adapted for receiving measurement temperature from temperature sensor, the temperature of the measurement temperature and space Correlation,

Wherein the temperature controller is configured to increase the reference if the measurement temperature is greater than the reference temperature The size of speed；And

Wherein the temperature controller is configured to reduce the reference if the measurement temperature is less than the reference temperature The size of speed.

14. thermostat apparatus according to claim 12, wherein the temperature controller is additionally configured to generate actuating letter Number and be transmitted to valve, the valve control heat exchanger supplies heat exchange material, and the actuating signal includes and the valve The relevant status information of state, the status information includes ON state and OFF state, and the ON state is moved to the valve Open position, the OFF state make the valve be moved to closed position；

If the measurement temperature is greater than upper threshold, it includes the described of the ON state that the temperature controller, which is suitable for generating, Signal is activated, and if the measurement temperature is less than bottom threshold, it includes the OFF that the temperature controller, which is suitable for generating, The actuating signal of state, and；

Wherein, the upper threshold is related to the predetermined upper limit value in temperature lag band, and it is stagnant that the bottom threshold is related to the temperature Predetermined lower bound value in band afterwards.

15. a kind of humidity control system, is used for conditioned space temperature, wherein the humidity control system includes:

Fan component comprising fan and multiple-speed motor, the multiple-speed motor be connected to the fan and be configured to Certain speed drives the fan,

The thermostat apparatus further include:

16. humidity control system according to claim 15, wherein the humidity control system further include:

Reservoir is suitable for accommodating heat exchange material,

Heat exchanger is connected to the reservoir fluid, wherein the heat exchanger is suitable for from described in reservoir reception Heat exchange material,

Valve, between the heat exchanger and the reservoir, the valve is optionally in open position and close stance It is moved between setting, wherein the valve allows the heat exchange material to lead to the heat from the reservoir in the open position Exchanger, and in the closed position, the valve prevents the heat exchange material from leading to the heat exchange from the reservoir Device,

Temperature sensor is located in the space and is configured as measuring the temperature in the space to generate measurement temperature Degree, the temperature sensor are electrically connected so that the measurement temperature is transferred to the thermostat apparatus with the thermostat apparatus,

User interface is suitable for communicating with user, and wherein the user interface is further adapted for receiving from the user with reference to temperature Degree.

17. humidity control system according to claim 15, wherein being supplied to the driving letter of the multiple-speed motor Number include driving voltage and driving frequency, the reference signal includes reference voltage and reference frequency and the driving voltage And/or the driving frequency is adjusted based on the reference signal, and；

Wherein, the driving signal is by the motor driver by modulating the received power supply based on the reference signal Signal generates, and wherein the motor driver is configured to modulate the voltage of the power supply signal and/or described Frequency.

18. humidity control system according to claim 17, wherein the driving voltage is adjusted based on the reference voltage, And the driving frequency is adjusted based on the reference frequency.

19. humidity control system according to claim 15, wherein the motor driver is configured as with following mould One of formula provides driving signal:

A, the variation voltage with constant frequency,

B, with the change frequency of constant voltage,

C, the variation voltage with change frequency.

20. humidity control system according to claim 15, wherein the speed control includes comparator, the comparison Device is configured to determine velocity error, wherein the velocity error is the difference between the reference velocity and the measuring speed, And wherein the speed control is configured to generate reference signal based on the velocity error.

21. humidity control system according to claim 21, wherein the speed control includes reference signal generator, The reference signal generator is configured to generate reference voltage or reference frequency or both reference voltage and reference frequency.

22. humidity control system according to claim 15, wherein the thermostat apparatus includes and the speed control The velocity sensor of device electronic communication, the velocity sensor are configured to determine measuring speed and are transmitted to the speed Controller, and wherein the measuring speed corresponds to electromotor velocity.

23. humidity control system according to claim 22, wherein the velocity sensor is configured as being based on working as not having Electric power or the counter electromotive force (EMF) generated when not being supplied to the multiple-speed motor driving signal by the multiple-speed motor are true The fixed measuring speed, and wherein the time cycle of the measuring speed and the counter electromotive force is inversely proportional.

24. humidity control system according to claim 15, wherein the thermostat apparatus includes temperature controller, it is described Temperature is configured as generating the reference velocity and is transmitted to the speed control, wherein the reference velocity is based on ginseng The difference examining temperature and measuring between temperature generates.

25. humidity control system according to claim 12, wherein the temperature controller is suitable for from the user interface Receive the reference temperature, the temperature controller is further adapted for receiving measurement temperature from temperature sensor, the measurement temperature and The temperature in space is related,

26. humidity control system according to claim 12, wherein the temperature controller is additionally configured to generate actuating Signal is simultaneously transmitted to the valve,

Wherein, the actuating signal includes status information related with the state of the valve, and the status information includes ON state And OFF state, the ON state make the valve be moved to open position, the OFF state makes the valve be moved to closed position；

27. a kind of method using humidity control system conditioned space temperature, wherein the humidity control system includes and multi-speed The thermostat apparatus of electric motor electron communication, wherein method includes the following steps:

Measurement temperature is received from temperature sensor,

Receive reference temperature

Driving signal is generated based on the reference signal, and；

28. the method according to claim 27 using humidity control system conditioned space temperature, wherein with following modes One of generate the driving signal:

A, the variation voltage with constant frequency,

B, with the change frequency of constant voltage,

C, the variation voltage with change frequency.