CN207160133U - The air water fetching device that multistage runner and refrigerating plant combine - Google Patents
The air water fetching device that multistage runner and refrigerating plant combine Download PDFInfo
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- CN207160133U CN207160133U CN201721038603.6U CN201721038603U CN207160133U CN 207160133 U CN207160133 U CN 207160133U CN 201721038603 U CN201721038603 U CN 201721038603U CN 207160133 U CN207160133 U CN 207160133U
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Abstract
The utility model provides the air water fetching device that a kind of multistage runner and refrigerating plant combine, and belongs to water-saving technology field.The device includes desiccant wheel, rotary-type sensible heat exchanger, condenser, evaporator, Condensed water collection and purifier, blower fan, casing and air cleaner, air cleaner is provided with casing air intake, blower fan is provided with air outlet slit, regeneration air porch sets rotary-type sensible heat exchanger, regeneration air exit sets condenser, evaporator is set before condenser, side, desiccant wheel are arranged in casing under the vaporizers for Condensed water collection and purifier.The device can pass through solar water thermal regeneration air when in use, refrigerant system condenser thermal regeneration air can also be passed through, by solar heat collector or refrigeration system condensation heat thermal regeneration air, and the use of high evaporating temperature refrigerating plant, electricity needs can be substantially reduced.It especially in the rare area of electric power, can be combined with photovoltaic generation, realize that zero energy consumption is run.
Description
Technical field
Water-saving technology field is the utility model is related to, the air that a kind of multistage runner and refrigerating plant combine is particularly related to and takes
Water installations.
Background technology
The dry and area of serious water shortage in desert etc., water intaking is alleviation water pressure from the air containing vapor
Effective means.Because water capacity is relatively low in the air of Arid Area, if mechanical refrigeration mode is directly used, with less than air dew point temperature
The low-temperature receiver of degree condenses to water vapor in air, then because evaporating temperature is too low, can bring larger power consumption.Meanwhile
Such regional intensity of solar radiation is high, therefore, with reference to the utilization of solar energy, realizes that the water vapor in air under high evaporating temperature is high
Effect condensation water-supply method, can effectively reduce energy resource consumption.
Desiccant wheel uses solid hygroscopic material, and transfer of the vapor from dehumidified air to regeneration air can be achieved.Humidification
Regeneration air water capacity rise afterwards, its corresponding dew-point temperature rise, so as to realize that the air reclaimed water under high sink temperature is steamed
The solidifying water intaking of air cooling.Need to heat it before humidifying due to regeneration air, be dehumidified air intlet state according to different and remove
Wet level, the heat source temperature of thermal regeneration air can only use electrical heating or high-temperature steam in the range of 90 DEG C~130 DEG C, from
And it is unfavorable for low-temperature heat source, such as solar energy, the utilization of heat pump heat extraction.And multistage rotary wheel dehumidifying/regeneration flow can be reduced effectively again
Raw temperature, it is achieved thereby that the efficient and long-acting operation of solar heat collector, and using refrigerant system condenser heat extraction.
Utility model content
The technical problems to be solved in the utility model is to provide the air water-intaking that a kind of multistage runner and refrigerating plant combine
Device, regeneration air is heated using solar heater or refrigeration system condensation heat, by the regeneration air after humidification
Condensed, sink temperature can be improved, by multistage runner flow, regeneration temperature can be reduced, while can realize in air
The filtering of grain thing and pollutant.The unit can combine with photovoltaic generation, realize that zero energy consumption is run.
The device include desiccant wheel, rotary-type sensible heat exchanger, condenser, evaporator, Condensed water collection and purifier,
Blower fan, casing and air cleaner, air cleaner is provided with casing air intake, blower fan is provided with casing air outlet slit, then
Rotary-type sensible heat exchanger is set at raw air intake, regeneration air exit sets condenser, evaporator, condensate are set before condenser
Collect and purifier is square under the vaporizers, desiccant wheel is arranged in casing.
The device is by two kinds of mode of heatings, when using solar water thermal regeneration air, the device also include air-
Water- to-water heat exchanger, solar water heater, hot water pipeline, regenerative apparatus and water pump, air-water heat exchanger be arranged on desiccant wheel it
Before, air-water heat exchanger is connected by hot water pipeline with solar water heater, air-water heat exchanger and solar water heater it
Between regenerative apparatus is set, water pump is set respectively at solar water heater water outlet and at regenerative apparatus water outlet.
When using refrigerant system condenser thermal regeneration air, the device also includes compressor, expansion valve and refrigerant
Pipeline, evaporator and condenser are connected by refrigerant tubing, and expansion valve is set at evaporator, and evaporator exit is set
Compressor.
When using solar water thermal regeneration air：
(1) when it is one group to be dehumidified air, the device first order runner system includes desiccant wheel and Air-Water exchanges heat
Device, the 2nd grade to N level runner systems of structure is identical, including desiccant wheel, air-water heat exchanger, rotary-type Exchange of apparent heat
Device, blower fan and air cleaner, air is dehumidified after air cleaner filters, successively by the 1st grade~N level runner systems
After discharge, wherein, before the 2nd grade~N level runners are entered, air is dehumidified by rotary-type sensible heat exchanger, by extraneous empty
Gas cools；Regeneration air first passes around rotary-type sensible heat exchanger with after last time humidifies after air cleaner filters
Regeneration air heat exchange, then by N level runner systems air-water heat exchanger heating after enter desiccant wheel it is humidified, so
The air-water heat exchanger and desiccant wheel in the runner system of N-1 levels~1st grade are passed sequentially through afterwards；Regeneration air after humidification
Cool through rotary-type sensible heat exchanger, finally enter evaporator, cooled and dehumidified, condensate is received by Condensed water collection and purifier
Collect, the regeneration air after cool-down dehumidification enters condenser, excludes condensation heat, and casing is discharged through blower fan.
(2) it is N groups when being dehumidified air, and during N ＞ 1, desiccant wheel, Air-Water heat exchange is included per one-level runner system
Device, blower fan and air cleaner, every grade is dehumidified air after air cleaner filters, through every one-level runner system dehumidifying heel row
Go out；Regeneration air after air cleaner filters, first pass around rotary-type sensible heat exchanger with through last time humidify after again
Raw air heat-exchange, humidified into runner system after then being heated by the air-water heat exchanger of N level runner systems, Ran Houyi
Air-water heat exchanger and desiccant wheel in the secondary runner system by N-1 levels~1st grade；Regeneration air after humidification is through turning
Wheeled sensible heat exchanger is reproduced air cooling-down, finally enters evaporator, is cooled and dehumidified, and condensate is by Condensed water collection and purification
Device is collected, and the regeneration air after cool-down dehumidification enters condenser, excludes condensation heat, and casing is discharged through blower fan.
When using refrigerant system condenser thermal regeneration air：
(1) when be dehumidified air for one group when, the first order includes desiccant wheel and condenser, the 2nd grade to N level runners system
The structure of system is identical, including desiccant wheel and condenser, rotary-type sensible heat exchanger, blower fan and air cleaner, is dehumidified sky
Gas is discharged after the 1st grade~N level runner systems successively after air cleaner filters, and is turned entering the 2nd grade~N levels
Before wheel, air is dehumidified by rotary-type sensible heat exchanger, is cooled by outside air；Regeneration air filters through air cleaner
Afterwards, rotary-type sensible heat exchanger is first passed around with the regeneration air heat exchange after last time humidifies, then by N level runners system
It is humidified to enter runner system after the condenser heating of system, then passes sequentially through the condensation in the runner system of N-1 levels~1st grade
Device and desiccant wheel；Regeneration air after humidification is reproduced air cooling-down through rotary-type sensible heat exchanger, finally enters evaporator,
Cooled and dehumidified, condensate is collected by Condensed water collection and purifier, and the regeneration air after cool-down dehumidification enters condenser, is excluded
Condensation heat, casing is discharged through blower fan.
(2) it is N groups when being dehumidified air, and during N ＞ 1, includes desiccant wheel, condenser, blower fan per one-level runner system
And air cleaner, every grade is dehumidified air after air cleaner filters, and is discharged after the dehumidifying of every one-level runner system；Regeneration
Air first passes around rotary-type sensible heat exchanger and changed with the regeneration air after last time humidifies after air cleaner filters
Heat, then by N level runner systems condenser heating after enter runner system it is humidified, then pass sequentially through N-1 levels~
Condenser and desiccant wheel in 1st grade of runner system；Regeneration air after humidification is reproduced sky through rotary-type sensible heat exchanger
Gas cools, and finally enters evaporator, is cooled and dehumidified, and condensate is collected by Condensed water collection and purifier, after cool-down dehumidification
Regeneration air enters condenser, excludes condensation heat, and casing is discharged through blower fan.
Above-mentioned technical proposal of the present utility model has the beneficial effect that：
The air water fetching device, regeneration thermal source can use solar heater or refrigeration system condensation heat, sky can be achieved
The raising of gas condensation process sink temperature simultaneously reduces regeneration temperature, while can realize the mistake to particulate in air and pollutant
Filter.Carrying out dehumidification by condensation to the regeneration air after humidification realizes the raising of sink temperature, can use high evaporating temperature refrigeration dress
Put；The reduction of regeneration temperature is realized using multistage runner flow, therefore regenerate thermal source to use solar water heater or refrigeration
The condensation heat of device.The refrigerating plant energy consumption of compressor of high evaporating temperature and low condensation temperature freezes relative to low evaporating temperature to be filled
Putting effectively to reduce.Meanwhile recuperation of heat mode can be used, reduce the refrigeration of regeneration air heating amount or high temperature low-temperature receiver to air
Amount, is also beneficial to the reduction of compressor power consumption.Relatively low energy requirement, be advantageous to the application of photovoltaic generation, it is especially dilute in electric power
Scarce area, realize that zero energy consumption is run.
Brief description of the drawings
Fig. 1 is that the air water fetching device that multistage runner of the present utility model and refrigerating plant combine is added using solar water
One dehumidified air water fetching device structural representation of the N levels runner of hot recycling air；
Fig. 2 is that the air water fetching device that multistage runner of the present utility model and refrigerating plant combine is added using solar water
The N level runner N stock dehumidified air water fetching device structural representations of hot recycling air；
Fig. 3 is that the air water fetching device that multistage runner of the present utility model and refrigerating plant combine is condensed using refrigeration system
One dehumidified air water fetching device structural representation of the N levels runner of device thermal regeneration air；
Fig. 4 is that the air water fetching device that multistage runner of the present utility model and refrigerating plant combine is condensed using refrigeration system
The N level runner N stock dehumidified air water fetching device structural representations of device thermal regeneration air；
Fig. 5 is connection diagram of the utility model solar heat collector with regenerated air heater；
Fig. 6 is high evaporating temperature refrigeration system evaporator of the present utility model and condenser connection diagram, wherein, (a)
For Fig. 1 and Fig. 2 refrigeration system type of attachment, (b) is Fig. 3 and Fig. 4 refrigeration system type of attachment.
Wherein：1- desiccant wheels；The rotary-type sensible heat exchangers of 2-；3- evaporators；4- condensers；5- Condensed water collections and purification
Device；6- air-water heat exchangers；7- blower fans；8- hot water pipelines；9- casings；10- air cleaners；11- solar water heaters；
12- regenerative apparatuses；13- water pumps；14- compressors；15- expansion valves；16- refrigerant tubings.
Embodiment
To make the technical problems to be solved in the utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing
And specific embodiment is described in detail.
The utility model provides the air water fetching device that a kind of multistage runner and refrigerating plant combine.
The air water fetching device combined as Figure 1-Figure 4 for multistage solid runner and high-temperature refrigeration system.Using multistage
The air handling scheme of runner humidification, can effectively reduce regeneration temperature, realize solar heater or high-temperature refrigeration system
Condensation heat utilization；Condensate processing is carried out to the regeneration air after humidification, refrigeration system evaporating temperature can be improved, so as to reduce
Refrigeration system energy consumption.The device can use one rotary wheel dehumidifying air or N stock rotary wheel dehumidifyings air to realize and add to regeneration air
It is wet.Regeneration air side heat regenerator can reduce refrigeration system energy consumption.The system reduces to electricity needs, especially rare in electric power
Area, the system can use device of solar generating (being not drawn into figure) to drive, and realize that zero energy consumption is run.
Referring to Fig. 1~Fig. 6, the present apparatus includes：It is used to coagulate in desiccant wheel 1, rotary-type sensible heat exchanger 2, refrigeration system
Evaporator 3, refrigerant system condenser 4, Condensed water collection and the purifier 5 of water, the air-water heat exchanger 6 of thermal regeneration air,
Blower fan 7, hot water pipeline 8, casing 9, air cleaner 10, solar water heater 11, regenerative apparatus 12, water pump 13, compressor 14,
Expansion valve 15, refrigerant tubing 16.
In the utility model device, air cleaner 10 is provided with the air intake of casing 9, is provided with the air outlet slit of casing 9
Blower fan 7, regeneration air porch set rotary-type sensible heat exchanger 2, and regeneration air exit sets condenser 4, set before condenser 4
Below evaporator 3, desiccant wheel 1 is arranged in casing 9 for evaporator 3, Condensed water collection and purifier 5.
As shown in Figure 1, Figure 2 with shown in Fig. 5, air-water heat exchanger 6 is arranged on before desiccant wheel 1, and air-water heat exchanger 6 is logical
Overheat waterpipe 8 is connected with solar water heater 11, sets accumulation of heat to fill between air-water heat exchanger 6 and solar water heater 11
Put 12, water pump 13 is set respectively at the water outlet of solar water heater 11 and at the water outlet of regenerative apparatus 12.
As shown in Fig. 3, Fig. 4 and Fig. 6 (a), Fig. 6 (b), evaporator 3 is connected with condenser 4 by refrigerant tubing 16, is steamed
Send out the exit of device 3 and compressor 14 is set, the entrance of evaporator 3 sets expansion valve 15.
By upper, the multi-staged air water intaking device mainly has two kinds of forms, i.e., one dehumidified air is (not cold by rotary wheel dehumidifying
Solidifying dehumidifying) flow, as shown in Fig. 1, Fig. 3, and air (by rotary wheel dehumidifying, not dehumidification by condensation) flow of multiply dehumidifying, by scheming
2nd, shown in Fig. 4, regeneration air is after multistage humidifies, and be condensed dehumidifying, and condensed water uses after being collected purification.Thermal regeneration air
Heat can use solar heater, as shown in Fig. 1 and Fig. 2, solar water heater is the same as the heat exchanger of thermal regeneration air
Type of attachment is as shown in Figure 5.Or condenser heat extraction is used, as shown in Fig. 3 and Fig. 4.Fig. 3 and Fig. 4 is not drawn into compressor and swollen
Swollen valve and refrigerant tubing, the type of attachment of refrigeration system are as shown in Figure 6.
The device course of work is as follows：
Fig. 1 and Fig. 3 show the N level runner systems of one dehumidified air.The first order includes desiccant wheel 1 and regeneration air
Heater (Fig. 1 air-water heat exchanger 6 and Fig. 3 condenser 4), the 2nd grade to N level runner systems of structure is identical, including
Desiccant wheel 1 and regenerated air heater (Fig. 1 air-water heat exchanger 6 and Fig. 3 condenser 4), rotary-type sensible heat exchanger
2nd, blower fan 7 and air cleaner 10.
Unit principle is as follows：
1) it is dehumidified dehumidification process of the air in runner：Air (inlet condition OA-d-in) is dehumidified through air mistake
After filter 10 filters, (discharge state OA-d-out) is discharged after the 1st grade~N level runner systems successively, is entering the 2nd
Before level~N level runners, air is dehumidified by rotary-type sensible heat exchanger 2, by ambient temperature relatively low air (sky
Gaseity is changed into OA-c-out from OA-c-in) cooling；
2) humidification of the regeneration air in runner：Regeneration air (inlet condition OA-r-in) is through air cleaner
After 10 filterings, first pass around rotary-type sensible heat exchanger 2 and exchanged heat with the regeneration air after last time humidifies (on condition that OA-
R-in temperature is less than the regeneration air temperature after last time humidification), it is then laggard by the heater heating of N level runner systems
Enter that runner is humidified, then pass sequentially through heater and runner in the runner system of N-1 levels~1st grade；
3) regeneration air condensate process：Regeneration air after humidification is relatively low by relative temperature through rotary-type sensible heat exchanger 2
Regeneration air cooling, finally enter evaporator, cool and dehumidified, condensate is collected by Condensed water collection and purifier 5, cool
Regeneration air after dehumidifying excludes condensation heat (discharge state OA-r-out) through finally entering refrigerant system condenser.
By said process, because dehumidified air is after the dehumidifying of every one-level, temperature is raised, it is necessary to set an air-sky
Gas heat exchanger, it is cooled using the outside air less than dehumidified air temperature, be then sent into next stage desiccant wheel.Again
Raw air need to heat before entering per one-level runner to it, due to using multistage runner humidification, regeneration air temperature
Level reduces, and the utilization to solar energy (Fig. 1) and refrigeration system condensation heat (Fig. 3) can be achieved.Regeneration after N levels runner humidification
Air dew point temperature is raised, therefore the sink temperature of its dehumidification by condensation is raised, and the profit of high evaporating temperature refrigerating plant can be achieved
With.All (Fig. 1) or part (Fig. 3) condensation heat are excluded using the regeneration air after dehumidifying and cooling, condensation temperature, Gao Zheng can be reduced
Hair temperature and low condensation temperature are greatly improved performance of refrigerant systems, reduce refrigeration system energy consumption.It is arranged at regeneration air simultaneously
Air-air heat regenerator before import and dehumidification by condensation can reduce refrigeration system cold and energy consumption.
Fig. 2 and Fig. 4 show the N level runner systems of N stock dehumidified airs.Every 1 grade of runner system includes desiccant wheel 1, again
Raw air heater (Fig. 2 air-water heat exchanger 6 and Fig. 4 condenser 4), blower fan 7 and air cleaner 10.
Unit principle is as follows：
1) it is dehumidified dehumidification process of the air in runner：Every grade is dehumidified air (inlet condition OA-d-in) through sky
After air filter 10 filters, (discharge state OA-d-out) is discharged after the dehumidifying of every one-level runner system；
2) humidification of the regeneration air in runner：Regeneration air (inlet condition OA-r-in) is through air cleaner
After 10 filterings, first pass around rotary-type sensible heat exchanger 2 and exchanged heat with the regeneration air after last time humidifies (on condition that OA-
R-in temperature is less than the regeneration air temperature after last time humidification), it is then laggard by the heater heating of N level runner systems
Enter that runner is humidified, then pass sequentially through heater and runner in the runner system of N-1 levels~1st grade；
3) regeneration air condensate process：Regeneration air after humidification is relatively low by relative temperature through rotary-type sensible heat exchanger 2
Regeneration air cooling, finally enter evaporator, cool and dehumidified, condensate is collected by Condensed water collection and purifier 5, cool
Regeneration air after dehumidifying enters refrigerant system condenser, excludes unnecessary condensation heat (discharge state OA-r-out).
By said process, because the dehumidified air of every one-level is independent, therefore air-to-air heat exchanger need not be set, removed
Air after wet is expelled directly out unit.Regeneration air need to heat before entering per one-level runner to it, due to using multistage
Runner humidification, therefore the horizontal reduction of regeneration air temperature, can be achieved to solar energy (Fig. 2) and refrigerant system condenser heat extraction
The utilization of (Fig. 4).Regeneration air dew-point temperature rise after N levels runner humidification, therefore to the sink temperature of its dehumidification by condensation
Rise, the utilization of high evaporating temperature refrigerating plant can be achieved.All (Fig. 2) or portion are excluded using the regeneration air after dehumidifying and cooling
Divide (Fig. 4) condensation heat, condensation temperature can be reduced, high evaporating temperature and low condensation temperature are greatly improved performance of refrigerant systems, drop
Low refrigeration system energy consumption.Refrigeration system can be reduced by being arranged at the air-air heat regenerator before regeneration air import and dehumidification by condensation
System cold and energy consumption.
Fig. 5 is solar water heating system, and after solar water heater 11 collects heat, heat is stored in regenerative apparatus 12,
Another strand of hot water under the driving of water pump 13, is sent into air-water heat exchanger 6 by hot water pipeline 8 and added after regenerative apparatus heats
Hot recycling air.
Fig. 6 is refrigeration system connection diagram, and evaporator 3 is used for air condensate, whole for Fig. 1 and system shown in Figure 2
Condensation heat is discharged in condenser 4 by the regeneration air after dehumidifying, and for Fig. 3 and Fig. 4, a part of condensation heat passes through condenser
Regeneration air heating in 4 pairs of humidifications, remaining condensation heat are discharged in condenser 4 by the regeneration air after dehumidifying.
In summary, the air water fetching device that the multistage solid runner and high-temperature refrigeration system combine, using multistage runner
The air handling scheme of humidification, regeneration temperature can be effectively reduced, realized to solar heater or high-temperature refrigeration system
The utilization of condensation heat；Condensate processing is carried out to the regeneration air after humidification, refrigeration system evaporating temperature can be improved, so as to reduce system
Cooling system energy consumption.Regeneration air side heat regenerator can reduce refrigeration system energy consumption.It can realize to particulate in air and dirt simultaneously
Contaminate the filtering of thing.The utility model reduces to the demand of electric power, especially can same photovoltaic in the rare area of electric power, the utility model
Generate electricity and combine, realize that zero energy consumption is run.
Described above is preferred embodiment of the present utility model, it is noted that for the ordinary skill of the art
For personnel, on the premise of principle described in the utility model is not departed from, some improvements and modifications can also be made, these improvement
The scope of protection of the utility model is also should be regarded as with retouching.
Claims (3)
- A kind of 1. air water fetching device that multistage runner and refrigerating plant combine, it is characterised in that：Including desiccant wheel (1), turn Wheeled sensible heat exchanger (2), condenser (4), evaporator (3), Condensed water collection and purifier (5), blower fan (7), casing (9) and Air cleaner (10), air cleaner (10) is provided with casing (9) air intake, blower fan is provided with casing (9) air outlet slit (7), regeneration air porch sets rotary-type sensible heat exchanger (2), and regeneration air exit sets condenser (4), condenser (4) it Before set evaporator (3), Condensed water collection and purifier (5) below the evaporator (3), desiccant wheel (1) is arranged on casing (9) It is interior.
- 2. the air water fetching device that multistage runner according to claim 1 and refrigerating plant combine, it is characterised in that：The dress Putting also includes air-water heat exchanger (6), solar water heater (11), hot water pipeline (8), regenerative apparatus (12) and water pump (13), Air-water heat exchanger (6) is arranged on before desiccant wheel (1), and air-water heat exchanger (6) passes through hot water pipeline (8) and solar energy Water heater (11) is connected, and regenerative apparatus (12), solar energy are set between air-water heat exchanger (6) and solar water heater (11) Water pump (13) is set respectively at water heater (11) water outlet and at regenerative apparatus (12) water outlet.
- 3. the air water fetching device that multistage runner according to claim 1 and refrigerating plant combine, it is characterised in that：The dress Putting also includes compressor (14), expansion valve (15) and refrigerant tubing (16), and evaporator (3) and condenser (4) pass through refrigerant Pipeline (16) is connected, and evaporator (3) exit sets compressor (14), and evaporator (3) entrance sets expansion valve (15).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721038603.6U CN207160133U (en) | 2017-08-18 | 2017-08-18 | The air water fetching device that multistage runner and refrigerating plant combine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721038603.6U CN207160133U (en) | 2017-08-18 | 2017-08-18 | The air water fetching device that multistage runner and refrigerating plant combine |
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| CN207160133U true CN207160133U (en) | 2018-03-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107447811A (en) * | 2017-08-18 | 2017-12-08 | 北京科技大学 | The air water fetching device and method that multistage runner and refrigerating plant combine |
| CN113605494A (en) * | 2021-08-26 | 2021-11-05 | 浙江理工大学 | Solar regeneration adsorption type air water taking device and using method thereof |
-
2017
- 2017-08-18 CN CN201721038603.6U patent/CN207160133U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107447811A (en) * | 2017-08-18 | 2017-12-08 | 北京科技大学 | The air water fetching device and method that multistage runner and refrigerating plant combine |
| CN107447811B (en) * | 2017-08-18 | 2023-10-31 | 北京科技大学 | Air water taking device and method combining multistage rotating wheels and refrigerating device |
| CN113605494A (en) * | 2021-08-26 | 2021-11-05 | 浙江理工大学 | Solar regeneration adsorption type air water taking device and using method thereof |
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