CN102677441A - Heat pump clothes dryer control method and heat pump clothes dryer - Google Patents
Heat pump clothes dryer control method and heat pump clothes dryer Download PDFInfo
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Abstract
The invention discloses a heat pump clothes dryer control method and a heat pump clothes dryer. The heat pump clothes dryer comprises a heat pump clothes drying system, the heat pump clothes drying system comprises a heat pump module, an auxiliary condenser and an auxiliary condensing fan, the heat pump module comprises a compressor, a main condenser, a throttling device and an evaporator, and the auxiliary condensing fan is used for cooling the surface of the auxiliary condenser and the compressor to adjust the load. The control method of the heat pump clothes dryer includes that different drying stages are divided according to the rotary drum inside humidity detected by a humidity sensor, and the auxiliary condensing fan is controlled to start and stop according to detected different temperature spots of the main condenser at each drying stage, so that the power of the compressor and the temperature of the evaporator are reduced at the later drying stage. According to the heat pump clothes dryer control method and the heat pump clothes dryer, the surface temperature of the main condenser is detected at different drying stages, so that the auxiliary condensing fan is controlled to start and stop, the power of the compressor and the temperature of the evaporator are reduced at the later drying stage, the dehumidification drying effect is improved, besides, the humidity removal is increased at the later drying stage, and the power consumption is reduced.
Description
Technical field
The present invention relates to a kind of clothes-drying device and drying control method, especially a kind of at oven dry later stage reduction compressor horsepower and evaporator temperature, to increase the heat pump clothes-drying machine control method and the heat pump clothes-drying machine of dehumidifying drying effect.
Background technology
Be provided with following air circulation duct in the existing heat-pump-type clothes drying device: the hot-air that adds that was carried out heating by the condenser in the heat pump circulating system is admitted in the hothouse that clothing is housed; The humid air of from clothing, having captured moisture is sent back to evaporimeter and dehumidifies; Air after the dehumidifying is heated by condenser once more, and sends in the hothouse.
Heat pump clothes-drying machine drying system, the pressure of compressor assembly tolerance are the corresponding saturation pressure of temperature between corresponding 60～70 ℃ of cold-producing medium, and in the oven dry later stage, with the rising of temperature, the condensation temperature of compressor can be near the limit value of maximum pressure.Existing drum-type heat pump clothes-drying machine is designed with auxiliary condenser and accessory fan, so that in oven dry later stage or accessory fan action in hot environment, compressor load is regulated.Since adopt the setting of single control temperature, the mid-early stage in oven dry, all promote bake out temperature as much as possible, be beneficial to the completion of oven dry in mid-early stage; But in the later stage, temperature raises in the tube, and the oven dry air humidity is reducing; The condensation point that needs is reducing; Although humidity reduces to make the load of evaporimeter to reduce, temperature also reduces, because the power load of compressor is moved in the high value; The heat that gets into cylinder does not reduce, and the decline of evaporator temperature is less than the air dew point decrease of temperature; And the use of condensation fan then makes heat more get in the environment, and the result has increased power consumption in the oven dry later stage, reduces dehumidification rate.
Application number is that 200610153406.9 Chinese patent discloses a kind of clothes drying device that can make the heat pump that is created in the drying air that circulates between hothouse and the heat pump realize stable operation.Wherein, carried out the air of heating by the heater in the heat pump and sent in the steel ladle as hothouse, got back to heat pump after the air of discharging from steel ladle passes filter unit,, formed air circulation duct by delivering to heater again after the heat dump dehumidifying.Be provided with line bits filter in the filter unit, and be provided with the pipeline that is connected with air outlet and air introducing port.
Application number is that 200410097855.7 Chinese patent discloses a kind of clothes drying device, comprising: heat pump assembly; The drying air is guided to heat dump, the radiator of heat pump assembly and the air channel of the drying chamber of clothing is housed; In said air channel, send into the air blast of drying air; And control device.In the drying operating process, compressor and air blast are operated; When the drying operation took place to interrupt, control device made compressor stop official hour.
The clothes-drying device of above-mentioned employing heat pump drying mode, higher in environment temperature, under 35～40 ℃ of environment; The oven dry incipient stage; The air themperature that is blown in laundry/drying tube rises to rapidly more than 60 ℃, the air themperature that blows out in the laundry/drying tube, and humidity is rising rapidly also.In this case, the refrigerant saturation pressure in the evaporimeter is higher, and the load of compressor assembly is big, reaches the critical operating pressure of compressor very soon.To the invariable frequency compressor system; The heat radiation scope that also can exceed auxiliary heat dissipation blower fan and auxiliary condenser, compressor can be because hypertonia and excessive discharge temperature quit work, and compressor is interrupted work in the drying course; Can impact to the compressor part performance, increase fault rate.If adopt the frequency-changeable compressor system, though compressor can be regulated the compressor operating load by the operating frequency of control system adjustment compressor, frequency-changeable compressor self also has individual lowest operating frequency scope.The high load capacity work of refrigeration system causes the compressor electric motor fault rate high, reduces service life.
In view of this special proposition the present invention.
Summary of the invention
The technical problem that the present invention will solve is to overcome the deficiency of prior art, and a kind of heat pump clothes-drying machine control method that the oven dry electricity consumption is optimized and shortens when improving drying efficiency drying time is provided.
Another object of the present invention is to improve heat pump clothes-drying machine with above-mentioned control method.
For solving the problems of the technologies described above; The present invention adopts the basic design of technical scheme to be: a kind of heat pump clothes-drying machine control method; This dryer comprises the heat pump clothes-drying system; The heat pump clothes-drying system comprise have compressor, the heat pump module of main condenser, throttling arrangement and evaporimeter; Also comprise auxiliary condenser and be used for to the cooling of auxiliary condenser and compressor surface to regulate the auxiliary condensation fan of load; The control method of this heat pump clothes-drying machine by according to humidity sensor the humidity in the detection cylinder divide different baking stages, according to detecting main condenser in the unlatching of the auxiliary condensation fan of each baking stage different temperature point control with stop, to reduce the compressor horsepower and the evaporator temperature in oven dry later stage.
At the oven dry preliminary stage, the temperature spot that the auxiliary condensation fan of control is opened is T1, and the temperature spot that shuts down is T1-Δ T1; When the signal prompt of the representative clothing electrical conductivity of humidity sensor feedback reached the oven dry later stage, compressor run down time t1 reruned; During the late stages of developmet, the temperature spot that the auxiliary condensation fan of control is opened is T2, and the temperature spot that shuts down is T2-Δ T2, and T1, T2, Δ T1, Δ T2, t1 are setting value, T1 >=T2.
At the oven dry later stage, adopt or do not adopt the step of interrupting compressor operation to dry the compressor horsepower in later stage with reduction according to the different environment temperature.
Concrete scheme is when environment temperature is higher than T, to adopt the step of interrupting compressor operation; When environment temperature is not higher than T, do not adopt the step of interrupting compressor operation, T is a setting value, T >=30 ℃.
When adopting the step of interrupting compressor operation, interrupt running t1 in the time period at compressor, cylinder and Air Blast fan still turn round, and make air circulation normally to take the steam of clothing oven dry evaporation out of.
The concrete steps of such scheme are:
A, oven dry beginning;
Whether b, detection baking stage are the later stage; If, do not change step c over to; If change steps d over to;
The temperature spot that c, the auxiliary condensation fan of control are opened is T1, and the temperature spot that shuts down is T1-Δ T1, changes step b over to;
D, compressor interrupt running;
E, judge that compressor shuts down and whether reach t1 that t1 >=3 minute are if get into step f;
F, compressor start again, get into step g;
The temperature spot that g, the auxiliary condensation fan of control are opened is T2, and the temperature spot that shuts down is T2-Δ T2;
H, whether judge drying clothes humidity,,, then change step I over to as judging drying clothes humidity＜setting value if the signal >=setting value of the representative clothing electrical conductivity of humidity sensor feedback then changes step g over to less than setting value;
I, oven dry finish.
Perhaps, when not adopting the step of interrupting compressor operation, the control method concrete steps are:
A, oven dry beginning;
Whether b, detection baking stage are the later stage; If, do not change step c over to; If change steps d over to;
The temperature spot that c, the auxiliary condensation fan of control are opened is T1, and the temperature spot that shuts down is T1-Δ T1, changes step b over to;
D, whether judge drying clothes humidity,,, then change step f over to as judging drying clothes humidity＜setting value if the signal >=setting value of the representative clothing electrical conductivity of humidity sensor feedback then changes step e over to less than setting value;
The temperature spot that e, the auxiliary condensation fan of control are opened is T2, and the temperature spot that shuts down is T2-Δ T2, changes steps d over to;
F, oven dry finish.
Baking stage of the present invention also can be divided into preceding middle back three phases through the signal that humidity sensor detects the representative clothing electrical conductivity of feedback; The temperature spot that mid-term stage is provided with the auxiliary condensation fan unlatching of control is T3; The temperature spot that shuts down is T3-Δ T3, and T1 >=T3 >=T2 is according to above-mentioned step; Through controlling auxiliary condensation fan temperature spot of opening and the temperature spot that shuts down; Get into mid-term stage by preliminary stage and get into later stage again, drying course also can be divided the more stage certainly, according to the different stages more auxiliary condensation fan is set and opens temperature spot and shut down temperature spot; Again because main purpose of the present invention is to reduce the temperature of compressor operating load and evaporimeter in the oven dry later stage; And the compressor interrupt step that increases also is in the later stage; Therefore when drying course is divided a plurality of stage; Still can be in the oven dry later stage according to environment temperature, the step of interrupting compressor operation is adopted or is not adopted in decision.
Heat pump clothes-drying machine of the present invention; Comprise the heat pump clothes-drying system; The heat pump clothes-drying system comprise have compressor, the heat pump module of main condenser, throttling arrangement and evaporimeter; Also comprise auxiliary condenser and be used for to the cooling of auxiliary condenser and compressor surface that auxiliary condenser is connected with main condenser, successively compressor, main condenser, auxiliary condenser, throttling arrangement, evaporimeter are connected to compressor again by the cold-producing medium circulating line to regulate the auxiliary condensation fan of load.
The air-flow that described auxiliary condensation fan drives acts on the heat exchange area of auxiliary condenser and compressor; Main condenser is provided with condenser temperature sensor near refrigerant outlet, the temperature spot control of this condenser temperature sensor detection main condenser is assisted the unlatching of condensation fan and stopped.
The structure and the drying mode of heat pump clothes-drying machine technical solution problem of the present invention only relate to the heat pump drying field, so said structure and drying mode also can be applied in the heat pump drying system of heat pump washing-drying integral machine.
After adopting technique scheme, the present invention compared with prior art has following beneficial effect.
Heat pump clothes-drying machine of the present invention is on the basis of existing heat pump module; Increased auxiliary condenser and be used for to the cooling of auxiliary condenser and compressor surface to regulate the auxiliary condensation fan of load; At different baking stages, different auxiliary condensation fans is set opens temperature spot and shut down temperature spot, through detecting the main condenser surface temperature; The auxiliary condensation fan of control is opened and is stopped; Reduced the compressor horsepower and the evaporator temperature in oven dry later stage, increased the dehumidifying drying effect, also improved oven dry later stage moisture removal and reduced power consumption; According to the different environment temperature, drying the later stage employing or not adopting the step of interrupting compressor operation, can regulate the oven dry control mode effectively, significantly reduce the drying time, reduced the drying energy consumption.
Be described in further detail below in conjunction with the accompanying drawing specific embodiments of the invention.
Description of drawings
Fig. 1 is a heat pump clothes-drying system schematic of the present invention;
Fig. 2 is a heat pump clothes-drying machine sketch map of the present invention;
1 compressor, 2 main condensers, 3 auxiliary condensers, 4 throttling arrangements, 5 evaporimeters, 6 Air Blast fans, 7 condenser temperature sensor, 8 auxiliary condensation fans, 9 cylinders, 10 humidity sensors
The specific embodiment
As depicted in figs. 1 and 2; Heat pump clothes-drying machine of the present invention comprises cylinder 9 and the heat pump clothes-drying system that is provided with the cylinder below; By Air Blast fan 6 hot blast that the heat pump clothes-drying system produces is imported to cylinder inner drying clothing through the drying air channel; The heat pump clothes-drying system comprise have compressor 1, the heat pump module of main condenser 2, throttling arrangement 4 and evaporimeter 5; The auxiliary condensation fan 8 that also comprises auxiliary condenser 3 and be used for loading with adjusting to auxiliary condenser 3 and compressor 1 surface cooling; Auxiliary condenser 3 and main condenser 2 series connection are connected compressor 1, main condenser 2, auxiliary condenser 3, throttling arrangement 4, evaporimeter 5 to compressor 1 by the cold-producing medium circulating line successively again.Described auxiliary condensation fan 8 is located on the side surface of auxiliary condenser 3 near compressor 1 one sides; Main condenser 2 is provided with condenser temperature sensor 7 near refrigerant outlet, the temperature spot that this condenser temperature sensor 7 detects main condenser 2 is controlled the unlatching of auxiliary condensation fan 8 and stopped.Be provided with humidity sensor 10 in the cylinder 9, the humidity that detects in the cylinder according to humidity sensor is divided into different baking stages with drying course.
At different baking stages, different auxiliary condensation fans is set opens temperature spot and shut down temperature spot, through detecting the main condenser surface temperature, the auxiliary condensation fan of control is opened and is stopped, and reduces the compressor horsepower and the evaporator temperature in oven dry later stage.
At the oven dry preliminary stage, the temperature spot that the auxiliary condensation fan of control is opened is T1, and the temperature spot that shuts down is T1-Δ T1; When the signal prompt of the representative clothing electrical conductivity of humidity sensor feedback reached the oven dry later stage, compressor run down time t1 reruned; During the late stages of developmet, the temperature spot that the auxiliary condensation fan of control is opened is T2, and the temperature spot that shuts down is T2-Δ T2, and T1, T2, Δ T1, Δ T2, t1 are setting value, T1 >=T2.
At the oven dry later stage, adopt or do not adopt the step of interrupting compressor operation to dry the compressor horsepower in later stage with reduction according to the different environment temperature.For example, when environment temperature is higher than T, adopt the step of interrupting compressor operation; When environment temperature is not higher than T, do not adopt the step of interrupting compressor operation, T is a setting value, T >=30 ℃.
Embodiment one
Present embodiment adopts the step of interrupting compressor operation, interrupts running t1 in the time period at compressor, and cylinder and Air Blast fan still turn round, and makes air circulation normally to take the steam of clothing oven dry evaporation out of.
The concrete steps of such scheme are:
A, oven dry beginning;
Whether b, detection baking stage are the later stage; If, do not change step c over to; If change steps d over to;
The temperature spot that c, the auxiliary condensation fan of control are opened is T1, and the temperature spot that shuts down is T1-Δ T1, changes step b over to;
D, compressor interrupt running;
E, judge that compressor shuts down and whether reach t1 that t1 >=3 minute are if get into step f;
F, compressor start again, get into step g;
The temperature spot that g, the auxiliary condensation fan of control are opened is T2, and the temperature spot that shuts down is T2-Δ T2;
H, whether judge drying clothes humidity,,, then change step I over to as judging drying clothes humidity＜setting value if the signal >=setting value of the representative clothing electrical conductivity of humidity sensor feedback then changes step g over to less than setting value;
I, oven dry finish.
Embodiment two
The difference of present embodiment and embodiment one is not adopt the step of interrupting compressor operation, and concrete steps are:
A, oven dry beginning;
Whether b, detection baking stage are the later stage; If, do not change step c over to; If change steps d over to;
The temperature spot that c, the auxiliary condensation fan of control are opened is T1, and the temperature spot that shuts down is T1-Δ T1, changes step b over to;
D, whether judge drying clothes humidity,,, then change step f over to as judging drying clothes humidity＜setting value if the signal >=setting value of the representative clothing electrical conductivity of humidity sensor feedback then changes step e over to less than setting value;
The temperature spot that e, the auxiliary condensation fan of control are opened is T2, and the temperature spot that shuts down is T2-Δ T2, changes steps d over to;
F, oven dry finish.
Embodiment three
Baking stage of the present invention detects the representative clothing electrical conductivity of feedback through humidity sensor signal is divided into preceding middle back three phases with drying course; The temperature spot that mid-term stage is provided with the auxiliary condensation fan unlatching of control is T3; The temperature spot that shuts down is T3-Δ T3; T1 >=T3 >=T2, at this moment, the control method concrete steps are:
A, oven dry beginning;
Whether b, detection baking stage are mid-term; If, do not change step c over to; If change steps d over to;
The temperature spot that c, the auxiliary condensation fan of control are opened is T1, and the temperature spot that shuts down is T1-Δ T1, changes step b over to;
The temperature spot that d, the auxiliary condensation fan of control are opened is T3, and the temperature spot that shuts down is T3-Δ T3, changes step e over to;
Whether e, detection baking stage are the later stage; If, do not change steps d over to; If change step f over to;
F, compressor interrupt running;
G, judge that compressor shuts down and whether reach t1 that t1 >=3 minute are if get into step h;
H, compressor start again, get into step I;
The temperature spot that i, the auxiliary condensation fan of control are opened is T2, and the temperature spot that shuts down is T2-Δ T2;
J, whether judge drying clothes humidity,,, then change step k over to as judging drying clothes humidity＜setting value if the signal >=setting value of the representative clothing electrical conductivity of humidity sensor feedback then changes step I over to less than setting value;
K, oven dry finish.
Embodiment four
The difference of present embodiment and embodiment three is not adopt the step of interrupting compressor operation, and concrete steps are:
A, oven dry beginning;
Whether b, detection baking stage are mid-term; If, do not change step c over to; If change steps d over to;
The temperature spot that c, the auxiliary condensation fan of control are opened is T1, and the temperature spot that shuts down is T1-Δ T1, changes step b over to;
The temperature spot that d, the auxiliary condensation fan of control are opened is T3, and the temperature spot that shuts down is T3-Δ T3, changes step e over to;
Whether e, detection baking stage are the later stage; If, do not change steps d over to; If change step f over to;
The temperature spot that f, the auxiliary condensation fan of control are opened is T2, and the temperature spot that shuts down is T2-Δ T2, changes step g over to;
G, whether judge drying clothes humidity,,, then change step h over to as judging drying clothes humidity＜setting value if the signal >=setting value of the representative clothing electrical conductivity of humidity sensor feedback then changes step f over to less than setting value;
H, oven dry finish.
Certainly drying course also can be divided the more stage, according to the different stages more auxiliary condensation fan is set and opens temperature spot and shut down temperature spot, divides the more stage and can control the operating efficiency of compressor more accurately; Again because main purpose of the present invention is to reduce the temperature of compressor operating load and evaporimeter in the oven dry later stage; And the compressor interrupt step that increases also is in the later stage; Therefore when drying course is divided a plurality of stage; Still can be in the oven dry later stage according to environment temperature, the step of interrupting compressor operation is adopted or is not adopted in decision.
The foregoing description only is that the preferred embodiments of the present invention are described; Be not that design of the present invention and scope are limited; Under the prerequisite that does not break away from design philosophy of the present invention; The various changes and modifications that the professional and technical personnel makes technical scheme of the present invention in this area all belong to protection scope of the present invention.
Claims (9)
1. heat pump clothes-drying machine control method; This dryer comprises the heat pump clothes-drying system; The heat pump clothes-drying system comprise have compressor, the heat pump module of main condenser, throttling arrangement and evaporimeter; Also comprise auxiliary condenser and be used for to the cooling of auxiliary condenser and compressor surface to regulate the auxiliary condensation fan of load; It is characterized in that: the control method of this heat pump clothes-drying machine by according to humidity sensor the humidity in the detection cylinder divide different baking stages, according to detecting main condenser in the unlatching of the auxiliary condensation fan of each baking stage different temperature point control with stop, to reduce the compressor horsepower and the evaporator temperature in oven dry later stage.
2. a kind of heat pump clothes-drying machine control method according to claim 1 is characterized in that: at the oven dry preliminary stage, the temperature spot that the auxiliary condensation fan of control is opened is T1, and the temperature that shuts down is T1-Δ T1; When the signal prompt of the representative clothing electrical conductivity of humidity sensor feedback reached the oven dry later stage, compressor run down time t1 reruned; During the late stages of developmet, the temperature spot that the auxiliary condensation fan of control is opened is T2, and the temperature spot that shuts down is T2-Δ T2, and T1, T2, Δ T1, Δ T2, t1 are setting value, T1 >=T2.
3. a kind of heat pump clothes-drying machine control method according to claim 2 is characterized in that: at the oven dry later stage, adopt or do not adopt the step of interrupting compressor operation to dry the compressor horsepower in later stage with reduction according to the different environment temperature.
4. a kind of heat pump clothes-drying machine control method according to claim 3; It is characterized in that: when adopting the step of interrupting compressor operation; Interrupt running t1 in the time period at compressor, cylinder and Air Blast fan still turn round, and make air circulation normally to take the steam of clothing oven dry evaporation out of.
5. a kind of heat pump clothes-drying machine control method according to claim 4, it is characterized in that: concrete steps are:
A, oven dry beginning;
Whether b, detection baking stage are the later stage; If, do not change step c over to; If change steps d over to;
The temperature spot that c, the auxiliary condensation fan of control are opened is T1, and the temperature spot that shuts down is T1-Δ T1, changes step b over to;
D, compressor interrupt running;
E, judge that compressor shuts down and whether reach t1 that t1 >=3 minute are if get into step f;
F, compressor start again, get into step g;
The temperature spot that g, the auxiliary condensation fan of control are opened is T2, and the temperature spot that shuts down is T2-Δ T2;
H, whether judge drying clothes humidity,,, then change step I over to as judging drying clothes humidity＜setting value if the signal >=setting value of the representative clothing electrical conductivity of humidity sensor feedback then changes step g over to less than setting value;
I, oven dry finish.
6. a kind of heat pump clothes-drying machine control method according to claim 3 is characterized in that: when not adopting the step of interrupting compressor operation, the control method concrete steps are:
A, oven dry beginning;
Whether b, detection baking stage are the later stage; If, do not change step c over to; If change steps d over to;
The temperature spot that c, the auxiliary condensation fan of control are opened is T1, and the temperature spot that shuts down is T1-Δ T1, changes step b over to;
D, whether judge drying clothes humidity,,, then change step f over to as judging drying clothes humidity＜setting value if the signal >=setting value of the representative clothing electrical conductivity of humidity sensor feedback then changes step e over to less than setting value;
The temperature spot that e, the auxiliary condensation fan of control are opened is T2, and the temperature spot that shuts down is T2-Δ T2, changes steps d over to;
F, oven dry finish.
7. a kind of heat pump clothes-drying machine control method according to claim 3 is characterized in that: when environment temperature is higher than T, adopt the step of interrupting compressor operation; When environment temperature is not higher than T, do not adopt the step of interrupting compressor operation, T is a setting value, T >=30 ℃.
8. heat pump clothes-drying machine that has like the arbitrary said control method of claim 1-7; Said dryer comprises the heat pump clothes-drying system; The heat pump clothes-drying system comprise have compressor, the heat pump module of main condenser, throttling arrangement and evaporimeter; It is characterized in that: also comprise auxiliary condenser and be used for to the cooling of auxiliary condenser and compressor surface to regulate the auxiliary condensation fan of load; The series connection of auxiliary condenser and main condenser is connected compressor, main condenser, auxiliary condenser, throttling arrangement, evaporimeter to compressor by the cold-producing medium circulating line successively again.
9. heat pump clothes-drying machine according to claim 8; It is characterized in that: the air-flow that described auxiliary condensation fan drives acts on the heat exchange area of auxiliary condenser and compressor; Main condenser is provided with condenser temperature sensor near refrigerant outlet, the temperature spot control of this condenser temperature sensor detection main condenser is assisted the unlatching of condensation fan and stopped.
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