CN201083434Y - Ultra/frequency conversion electromagnetic inductive boiler - Google Patents
Ultra/frequency conversion electromagnetic inductive boiler Download PDFInfo
- Publication number
- CN201083434Y CN201083434Y CNU2007201699413U CN200720169941U CN201083434Y CN 201083434 Y CN201083434 Y CN 201083434Y CN U2007201699413 U CNU2007201699413 U CN U2007201699413U CN 200720169941 U CN200720169941 U CN 200720169941U CN 201083434 Y CN201083434 Y CN 201083434Y
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- buffer tank
- steel pipe
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- boiler
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Abstract
The utility model discloses an overfrequency/variable-frequency electromagnetic induction boiler which comprises a boiler body consisting of an outer cover and a built-in water tank, wherein, the water tank consists of an upper backwater buffer tank, an intermediate magnetocaloric exchange water tank and a lower backwater buffer tank which are communicated with each other; the upper backwater buffer tank is externally communicated with atmosphere; an opening at the bottom of the lower backwater buffer tank is connected with a blow-off pipe; a water replenishing opening is communicated with the lower backwater buffer tank; an inner layer of vertical steel pipe and an outer layer of vertical steel pipe which are formed by spiral lap winding of at least one end 360 DEG are arranged inside the magnetocaloric exchange water tank; space is arranged between the inner layer of the vertical steel pipe and the outer layer of the vertical steel pipe, and one end of the inner layer of the vertical steel pipe is connected with the outer layer of the vertical steep pipe; the other ends of the inner layer of the vertical steel pipe and the outer layer of the vertical steep pipe are respectively communicated with external pipes to form communicating waterways; the outer layer of the vertical steel pipe is closely attached to the surrounding wall of the magnetocaloric exchange water tank; the surrounding wall of the magnetocaloric exchange water tank is covered by an insulating layer and sleeved with an induction coil; an upper connector and a lower connector of the induction coil are connected with output ends of an overfrequency/variable-frequency power source. The utility model can accept broad operating frequency band power sources and heating efficiency is higher.
Description
Technical field
The utility model relates to a kind of surpassing/application technology of conversion electromagnetic induction technology on boiler, relates in particular to a kind of super/conversion electromagnetic induction boiler that adopts electric energy.
Background technology
Eddy-current heating is electrically heated a kind of optimised form, and it has, and firing rate is fast, the thermal efficiency is high and do not have advantages such as air pollution, be widely used in metal smelt, metal surface heat treatment, metal welding, add fields such as hot water.What be used to add hot water mainly contains line-frequency induction heating, Frequency Induction Heating and high-frequency induction heating.As everyone knows, the line-frequency induction heating is that the power frequency supply of 220V (380V) 50Hz is directly imported induction coil, the stationary water that is opposite to wherein heats, though this method has inexpensive reliable advantage, but its frequency is low and can not adjust, thereby its power factor is little, and reactive loss is big, inefficiency and progressively being eliminated; High-frequency induction heating is that Kelvin effect is too strong, and can not make powerful induction heating equipment with regard to the existing power electronic device, thereby can not do powerful high-frequency heating water device because the depth of penetration of its high frequency electric is little; Frequency Induction Heating has greatly improved with high-frequency induction heating than the line-frequency induction heating at the aspects such as selection of power factor (96%) and frequency (0.4-8KHz), also can make powerful induction heating equipment, but the power output of its power supply is subjected to the influence of its frequency, rising along with frequency, its power output reduces gradually, this is the master control device that is subjected to as intermediate frequency power supply---the influence of IGCT (SCR) aspect production technology and device performance, in order to realize the constant increase power output of frequency, having designed various special inverter circuits meets the demands, the characteristics of these circuit are complex structures but belong to non real-time property circuit, have not only increased manufacturing cost but also impracticable.And its working frequency range is in the sound wave scope, and the intermediate frequency howling that sends during its work has a strong impact on people's rest more than 50dB, therefore has to design puigging again in the boiler room, increased investment so again.
In recent years, because the appearance of the full control device that insulated gate bipolar transistor (IGBT) etc. are novel, far be wider than IGCT (SCR) with its working band, thereby can adopt simple inverter circuit to realize super/frequency-converter power conversion, more because its circuit is simple, manufacturing is used and is keeped in repair all and makes things convenient for, thereby it has more development prospect.
The boiler of existing employing electric energy also has electrothermal tube and Electric radiant Heating Film, and they are through medium heat conduction heating, and the efficiency of heating surface is low, and power factor is below 0.9, and power can not overcome the danger of electric leakage in addition below hundreds of kilowatt.
Summary of the invention
The purpose of this utility model provides a kind of boiler of accepting wide working band power supply and higher the surpassing of the efficiency of heating surface/conversion electromagnetic induction, and it can overcome the shortcoming of existing eddy-current heating aspect, realizes more powerful surpassing/conversion electromagnetic induction heating.
For achieving the above object, the utility model is taked following design:
A kind of surpassing/the conversion electromagnetic induction boiler, comprise the body of heater of forming by outer cover and inner water-tank; Described water tank is constituted by the last backwater buffer tank that is interconnected, middle part magnetic heat exchange water tank and lower water-back buffer tank, the logical outward atmosphere of last backwater buffer tank, lower water-back buffer tank bottom opening connects blow-off pipe, and water supplement port communicates with the lower water-back buffer tank;
Establish the vertical steel pipe of making by at least one 360 ° of spiral layers lap wounds of inside and outside layer in the described magnetic heat exchange water tank, inside and outside layer vertically has spacing between steel pipe, and the upper end of the vertical steel pipe of internal layer interconnects with the outer vertically upper end of steel pipe, and each other end is communicated with the water route with the external application pipeline connection to form respectively;
Outer vertically steel pipe is close to magnetic heat exchange water tank leg, sheathed again induction coil behind the outer insulating layer coating of magnetic heat exchange water tank leg;
The upper and lower joint of described induction coil links to each other with the output of super/variable-frequency power sources.
Described inside and outside layer radially steel tube section is that square-outside and round-inside or circular welding carbon steel or stainless-steel pipe are made.
The utility model also is equipped with the checkout gear that detects magnetic heat exchange water tank water level.
For making overall structure more firm, described body of heater contour structures is presented circle square structure down, and its lower water-back buffer tank is made the square of inner hollow, outer cover water tank outer cover.Last backwater buffer tank top is the ellipse head structure, partly covers the main body outer cover at last backwater buffer tank and middle staving.
Super/conversion electromagnetic induction the boiler of the utility model structural design is good to be used for bath water heating purposes, also can be used for the heating of heating.
The utility model has the advantages that:
1, structural design of the present utility model, but super/conversion electromagnetic induction technology that its adapted is realized by simple inverter circuit made, make things convenient for so make the manufacturing of electromagnetic induction boiler use and keep in repair all.
2, this kind structure does not have the red sector heating, and the temperature of magnetic heat exchanger is at 200 ℃, and the thermal treatment zone is lower than the part fuel oil temperature, can directly heat the heat conduction wet goods; Heating process is static heating, does not have chemical product and produces; Thermal efficiency height can reach more than 98%.
3, owing to can adopt the super/conversion electromagnetic induction technology of operating frequency in the superaudio scope, solved the pollution of noise to environment.
Below in conjunction with drawings and Examples utility model is described further.
Description of drawings
Fig. 1 is that the utility model surpasses/conversion electromagnetic induction boiler one example structure schematic diagram (front view)
Fig. 1-a is a corresponding vertical view embodiment illustrated in fig. 1
Fig. 2 is induction coil one example structure schematic diagram (I portion position among corresponding diagram 1, Fig. 2)
Fig. 3 is another example structure schematic diagram of induction coil (I portion position among corresponding diagram 1, Fig. 2)
Fig. 4 is that an embodiment schematic diagram is used in super/conversion electromagnetic induction boiler erection
The specific embodiment
As shown in Figure 1, the utility model super/conversion electromagnetic induction boiler body structure is made up of outer cover 4 and built-in water tank.
Shown in Fig. 1, Fig. 1-a, described water tank is constituted by the last backwater buffer tank 11 that is interconnected, middle part magnetic heat exchange water tank 7 and lower water-back buffer tank 2, last backwater buffer tank 11 outer logical atmosphere, last backwater buffer tank 11 is logical atmosphere outside last water supplement port 12, boiler body is all communicated with atmosphere at any time, avoid causing danger.Under shed is accepted the blow-off pipe 1 of blowoff valve control break-make, and blow-off pipe can lead to the blowdown trench, but makes dirt in user's periodic cleaning boiler.Following water supplement port 26 communicates with lower water-back buffer tank 2.
Establish vertically steel pipe 25,24 of inside and outside layer in the described magnetic heat exchange water tank 7, inside and outside layer vertically steel pipe is made by at least one 360 ° of spiral layers lap wounds, spacing is arranged each other, and the upper end of the vertical steel pipe of internal layer interconnects with the outer vertically upper end of steel pipe, and each other end is communicated with to form with external application pipeline (being used for the heating of bathing water) respectively and is communicated with the water route;
Outer vertically steel pipe 24 is close to magnetic heat exchange water tank leg, and magnetic heat exchange water tank leg covers sheathed again induction coil 6 behind the insulating barrier 5 that mica or bakelite process outward.
Described induction coil 6 upper and lower joints link to each other with the output of super/variable-frequency power sources.
The utility model lower water-back buffer tank 2 is square band fillet that is become by welding Q235 (or stainless steel) assembly welding and the square that certain thickness inner hollow is arranged, last backwater buffer tank 11 can be the GB ellipse head, and intermediate magnetic heat exchange water tank 7 is weld assemblies with last backwater buffer tank 11.
Described induction coil 6 be by cross section be solid (not water flowing, as shown in Figure 2) or hollow (water flowing, rectangle as shown in Figure 3) or square electrician's copper or aluminium be the be layering coil of coiling of 360 ° of spirals vertically, is surrounded by insulating barrier outward.The output 35 of super/variable-frequency power sources of the upper and lower joint of induction coil and body of heater peripheral hardware link to each other (referring to Fig. 4).As adopt the spiral induction coil of hollow water flowing, then when connecing super/variable-frequency power sources output, top connection is communicated with last backwater buffer tank by the insulation head, lower contact is communicated with by the outlet of insulation head, valve 44, check-valves 45, forced circulation water pump 47, and pump inlet is communicated with the delivery port 18 of lower water-back buffer tank 2 by valve 41.
The number of turn of induction coil 6 is by calculating gained by following formula:
Wherein: f---feeds the frequency of the alternating current of induction coil 6, Hz;
The inductance of L---induction coil, H;
C---is super/resonant capacitor of conversion electromagnetic induction boiler, and F;
The utility model is super/and the conversion electromagnetic induction boiler also can be equipped with the checkout gear 10 that detects magnetic heat exchange water tank 7 water levels.Condensate tank of dehumidifier and the utility model be super/and free vent in the conversion electromagnetic induction boiler body structure constitutes the logical Atmosphere System of water level detecting, can be by existing techniques in realizing, also can do novel design,, not describe in detail herein to realize water level detecting and moisturizing according to the characteristics of boiler.
The gross blow hole diameter that last backwater buffer tank 11 is led to (being water supplement port 12) is that boiler by different capabilities is according to formula
Calculate gained (wherein, D
d-perforate equivalent diameter, mm; Q-normal-pressure boiler thermal power rating, MW; ), boiler is worked under safe condition all the time.
The utility model is super/and the conversion electromagnetic induction boiler is except that condensate tank of dehumidifier, other parts all are contained in the outer casing of being made by nonmetallic materials fiberglass, the certain thickness heat-insulation material of the outer cover inner surface folder one deck of fiberglass is in order to stop the thermal loss of boiler.Main body outer cover 4 in the present embodiment is to be made by the identical two parts in the nonmetallic materials fiberglass branch left and right sides with lower header outer cover 3, the one, avoided leaking outside of magnetic field, and the 2nd, make things convenient for the assembling and the maintenance of boiler, can also make the required color of user simultaneously.
Of the present utility model super/during the application of conversion electromagnetic induction technology on boiler and the magnetic heat exchanger flow and the flow velocity that carry out the water of heat exchange carry out preferably according to different capacity, to reach its higher thermal efficiency, flow velocity generally selects the 1.5---3.5 meter per second.
The utility model also is provided with the controlled water return pipeline that is connected with system when being used for the heating boiler purposes on the lower water-back buffer tank.
Above-mentioned various related each embodiment is super/the conversion electromagnetic induction boiler should dispose and its power is complementary super/frequency changing power device, and super/frequency changing power device belongs to prior art, does not give unnecessary details herein.
Fig. 4 is that the utility model surpasses/conversion electromagnetic induction boiler erection use schematic diagram, represents the boiler entity part among the figure in the frame of broken lines, and super/frequency changing power device 35 is located at outside the body of heater.When adopting Fig. 1, Fig. 1-a illustrated embodiment (being used for bathing water heating function), super/conversion electromagnetic induction boiler water route trend is: system water enters into boiler lower water-back buffer tank 2 through boiler feed water mouth 26, enter into magnetic heat exchange water tank 7 by the lower water-back buffer tank, system water mainly is used as heat carrier, wants timely moisturizing certain the time when water consumes; Be heated water and then be by outer heating system or bathing hot water storage tank and enter 24 internal layers (or 25 skins) vertically in the steel pipe in the pipeline through advancing water inlet through valve 56, circulating hot-water pump 46, check-valves 48, control valve 53, from the vertically interior pipeline outflow of steel pipe of 25 skins (or 24 internal layers), arrive outer heating system or bathing hot water storage tank again through control valve 55, valve 50.So just finished the circulation in super/conversion electromagnetic induction boiler.
The utility model is super/and the supply unit of conversion electromagnetic induction boiler adopts super/variable-frequency power sources, all covers intermediate frequency and the high frequency scope that is beyond one's reach.
As shown in Figure 4, the utility model is super/embodiment of conversion electromagnetic induction boiler in, super/variable-frequency power sources 35 needs water cooling, otherwise can burn the frequency conversion components and parts, and super/conversion electromagnetic induction boiler can't normally be moved.Cooling recirculation system can be: the cooling water of cool cycles water tank 28 flows out after cooling off to super/variable-frequency power sources 35 through valve 29, cool cycles water pump 30, check-valves 31, filter 32, valve 33, get back to cool cycles water tank 28 through valve 36 magnetic valves 37, as the needs moisturizing, according to stop magnetic valve 37, open magnetic valve 39 and carry out moisturizing, this moment is super/and the conversion electromagnetic induction boiler will heat according to stop, wait the moisturizing super/conversion electromagnetic induction boiler that finishes after the fault-free will open again and heat.
Of the present utility model super/the conversion electromagnetic induction technology is that the overclocking electric current is fed induction coil, and with the form of magnetic induction electric energy is passed to and to be positioned at the magnetic heat exchanger that induction coil is equipped with water.
The utility model is super/and the operation principle of conversion electromagnetic induction boiler is to belong to a type of ferromagnetic core transformer, induction coil is equivalent to the elementary winding of transformer, and be equivalent to Secondary winding of transformer (being the iron core load) as the wall body of magnetic heat exchanger, when passing through in the elementary winding by the overclocking electric current after super/variable-frequency power sources inversion, body of heater as iron core will be under the role and influence of electromagnetic field, produce the magnetic line of force of alternation, cause body of heater to produce induced potential, and cause that in surface induced-current is an eddy current perpendicular to the induction coil axis, eddy current is harmful in the transformer, but this boiler has utilized this point exactly.According to the mutual induction theory of transformer, the virtual value of the induced potential in body of heater is:
E
2=4.44fn
2Φ
m(volt) (1)
In the formula (1): E
2The virtual value of the induced potential of-body of heater (volt);
The frequency (hertz) of f-induction coil alternating current;
n
2The wall body of-magnetic heat exchanger.
Here n
2=1, because metal only forms a ring; Φ
mThe maximum of-alternating flux.
At this induced potential E
2Effect under, in the formed closed-loop path of body of heater, just have eddy current to pass through, that is:
In the formula (2): I
2Respond in-the body of heater vortex flow (peace);
R
2-body of heater forms the resistance (Europe) in the ring;
X
2The reactance that leakage field determined in the ring that-body of heater forms (Europe).
The size of the vortex flow that is produced in the body of heater as can be seen by formula (2), E2 is in direct ratio with induced potential, and is inversely proportional with the impedance in body of heater loop.Since this boiler design characteristics, X
2Can ignore, because of the outer wall energy of the magnetic heat exchanger of this boiler absorbs leakage field fully.Therefore after body of heater was determined, its impedance was also just decided, and then the heating of body of heater is directly proportional with induced potential, can infer E by formula (1)
2Only with f and Φ
mThis two relating to parameters.Can work as after body of heater power determines its Φ
mAlso just determined to get off, like this E
2Only be directly proportional with f.Promptly desire obtains the frequency that required induced potential E2 just must increase electric current, reaches the purpose of heating effect.Can be in order to improve the caloric value of body of heater, if unrestrictedly improve power frequency, being subjected to the restriction of power electric component first more important is that Kelvin effect is too strong, is unfavorable for that heat exchange carries out.The just right this point of having utilized of the utility model makes the magnetic heat exchanger produce heat to greatest extent, pass through the water that its inner high speed flows and takes away, and at the mobile hydrone of magnetic heat exchange high speed also cutting magnetic field, water also just has been magnetized simultaneously.Magnetization effect, electrochemical effect, surperficial tension effect etc. have taken place by high-intensity magnetic field, make the chemical composition in the water change unborn figure place, orientation, the variation that the ion of easy fouling such as the calcium in the water, magnesium has produced physical property, clash into mutually, the mineral body of irregular movement direction is mutually exclusive, can not be in conjunction with gathering, thereby do not had the opportunity of fouling.
The utility model surpasses/super (change) frequency power of conversion electromagnetic induction boiler adapted, can overcome many deficiencies of existing induction heating equipment, and its operating frequency has solved the pollution of noise to environment in the superaudio scope.Wide because of its working band, solved the problem that other power output and operating frequency can not be synchronous.
According to routine calculate the utility model super/thermal power of conversion electromagnetic induction boiler by formula calculates:
Q＝I
2Rt
Wherein: Q-caloric value (joule)
The vortex flow of responding in the I-body of heater (peace)
The R-body of heater forms the resistance (Europe) in the ring
T-conduction time (S).
Claims (8)
1. super/conversion electromagnetic induction boiler comprises the body of heater of being made up of outer cover and inner water-tank; It is characterized in that: described water tank is constituted by the last backwater buffer tank that is interconnected, middle part magnetic heat exchange water tank and lower water-back buffer tank, the logical outward atmosphere of last backwater buffer tank, lower water-back buffer tank bottom opening connects blow-off pipe, and water supplement port communicates with the lower water-back buffer tank;
Establish the vertical steel pipe of making by at least one 360 ° of spiral layers lap wounds of inside and outside layer in the described magnetic heat exchange water tank, inside and outside layer vertically has spacing between steel pipe, and the upper end of the vertical steel pipe of internal layer interconnects with the outer vertically upper end of steel pipe, and each other end is communicated with the water route with the external application pipeline connection to form respectively;
Outer vertically steel pipe is close to magnetic heat exchange water tank leg, sheathed again induction coil behind the outer insulating layer coating of magnetic heat exchange water tank leg;
The upper and lower joint of described induction coil links to each other with the output of super/variable-frequency power sources.
2. according to claim 1 surpassing/the conversion electromagnetic induction boiler, it is characterized in that: described inside and outside layer radially tube wall cross section is that square-outside and round-inside or circular welding carbon steel or stainless-steel pipe are made.
3. according to claim 1 surpassing/the conversion electromagnetic induction boiler, it is characterized in that: the induction coil that described induction coil coils for the axial screw that the electrician makes of copper or aluminum, it is surrounded by insulating barrier, and cross section is solid or hollow rectangle or square.
4. according to claim 3 surpassing/the conversion electromagnetic induction boiler, it is characterized in that: described induction coil cross section is hollow rectangle or square, its upper and lower joint is when connecing super/variable-frequency power sources output, and top connection is communicated with the lower water-back buffer tank by the insulation head; Lower contact is communicated with by the outlet of insulation head through valve, check-valves, forced circulation water pump, and pump inlet is communicated with the lower water-back buffer tank.
5. according to claim 1 surpassing/the conversion electromagnetic induction boiler, it is characterized in that: described body of heater contour structures is presented circle square structure down, its lower water-back buffer tank is made the cuboid of inner hollow, last backwater buffer tank top is the ellipse head structure, partly cover the main body outer cover at last backwater buffer tank and middle staving, the lower water-back buffer tank covers in the lower header outer cover.
6. according to claim 1 surpassing/the conversion electromagnetic induction boiler, it is characterized in that: the magnetic heat exchange water tank wall gap of described induction coil and interior cover is between 1-20mm.
7. according to claim 1 surpassing/the conversion electromagnetic induction boiler, it is characterized in that: it is equipped with the checkout gear that detects magnetic heat exchange water tank water level.
8. according to claim 1 surpassing/the conversion electromagnetic induction boiler, it is characterized in that: described main body outer cover and lower header outer cover are made by nonmetallic materials fiberglass, the outer cover inner surface of each fiberglass presss from both sides a heat-insulation material layer, and synthetic whole by two fens body portions respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201699413U CN201083434Y (en) | 2007-07-27 | 2007-07-27 | Ultra/frequency conversion electromagnetic inductive boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201699413U CN201083434Y (en) | 2007-07-27 | 2007-07-27 | Ultra/frequency conversion electromagnetic inductive boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201083434Y true CN201083434Y (en) | 2008-07-09 |
Family
ID=39625901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201699413U Expired - Fee Related CN201083434Y (en) | 2007-07-27 | 2007-07-27 | Ultra/frequency conversion electromagnetic inductive boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201083434Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896563A (en) * | 2015-06-03 | 2015-09-09 | 宁波格林美孚新材料科技有限公司 | Electromagnetic heating and warming device |
| CN107013956A (en) * | 2017-06-06 | 2017-08-04 | 浙江绍兴苏泊尔生活电器有限公司 | Work control method of induction cooker and induction cooker |
| CN107850339A (en) * | 2016-05-13 | 2018-03-27 | 正宇Enb株式会社 | Heating, supplying hot water dual-purpose electromagnetic sensing boiler |
-
2007
- 2007-07-27 CN CNU2007201699413U patent/CN201083434Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896563A (en) * | 2015-06-03 | 2015-09-09 | 宁波格林美孚新材料科技有限公司 | Electromagnetic heating and warming device |
| CN107850339A (en) * | 2016-05-13 | 2018-03-27 | 正宇Enb株式会社 | Heating, supplying hot water dual-purpose electromagnetic sensing boiler |
| CN107013956A (en) * | 2017-06-06 | 2017-08-04 | 浙江绍兴苏泊尔生活电器有限公司 | Work control method of induction cooker and induction cooker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING HUAWEI HUACHENG KITCHEN EQUIPMENT CO., LTD Free format text: FORMER OWNER: BEIJING HUAWEI BOILERS CO., LTD. Effective date: 20120323 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100024 CHAOYANG, BEIJING TO: 101113 TONGZHOU, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120323 Address after: 101113 Beijing city Tongzhou District town Zhangjiawan two Si No. 146 South Street Patentee after: Beijing Huawei Huacheng Kitchen Equipment Co. Ltd. Address before: 100024, Beijing, Gaobeidian Chaoyang District Township North Garden Industrial Zone Patentee before: Beijing Huawei Boiler Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080709 Termination date: 20130727 |