WO2014173074A1 - 可调射流阀 - Google Patents

可调射流阀 Download PDF

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Publication number
WO2014173074A1
WO2014173074A1 PCT/CN2013/084286 CN2013084286W WO2014173074A1 WO 2014173074 A1 WO2014173074 A1 WO 2014173074A1 CN 2013084286 W CN2013084286 W CN 2013084286W WO 2014173074 A1 WO2014173074 A1 WO 2014173074A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
cold water
needle
adjustable
valve according
Prior art date
Application number
PCT/CN2013/084286
Other languages
English (en)
French (fr)
Inventor
袁训平
汤志强
Original Assignee
广州海鸥卫浴用品股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广州海鸥卫浴用品股份有限公司 filed Critical 广州海鸥卫浴用品股份有限公司
Priority to BR112015002200-6A priority Critical patent/BR112015002200B1/pt
Priority to IN301MUN2014 priority patent/IN2014MN00301A/en
Priority to MX2015001569A priority patent/MX357549B/es
Priority to US14/419,188 priority patent/US9863128B2/en
Publication of WO2014173074A1 publication Critical patent/WO2014173074A1/zh
Priority to ZA2015/00516A priority patent/ZA201500516B/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/08—Jet regulators or jet guides, e.g. anti-splash devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F16K11/048—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with valve seats positioned between movable valve members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/06—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in annular, tubular or hollow conical form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/32—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages in which a valve member forms part of the outlet opening
    • B05B1/326—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages in which a valve member forms part of the outlet opening the valve being a gate valve, a sliding valve or a cock
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
    • B05B7/28—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid
    • B05B7/30—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid the first liquid or other fluent material being fed by gravity, or sucked into the carrying fluid
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/04—Water-basin installations specially adapted to wash-basins or baths
    • E03C1/0408—Water installations especially for showers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/02—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid
    • F04F5/10—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing liquids, e.g. containing solids, or liquids and elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46—Arrangements of nozzles
    • F04F5/463—Arrangements of nozzles with provisions for mixing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack

Definitions

  • the present invention relates to the field of fluidic devices for water supply equipment, and in particular to an adjustable jet valve for mixing hot and cold water of a solar water heater. Background technique
  • jet devices commonly used in solar water heaters are suitable for high pressure systems, and usually provide pressure in two ways:
  • Chinese Patent Document CN 102767210 A discloses a multi-water source adjustable jet device, which comprises a jet.
  • Main body, fluid working chamber, needle, throat, diffuser, jet inlet (cold water inlet), sucked liquid inlet (hot water inlet), fluid working chamber is disposed in the body of the fluid, in the working chamber of the fluid
  • the front end is provided with a nozzle, and the needle is disposed on an extension line of the nozzle center line in the fluid working chamber.
  • the high pressure cold water enters the jet from the jet inlet.
  • the prior art Passing through the fluid working chamber to the nozzle, and injecting into the throat at a high speed along the needle tip, forming a negative pressure in the throat by the entrainment action, and having a suction effect on the hot water inlet connected to the throat, the prior art
  • the principle of high-speed jet entrainment is used to solve the problem of insufficient hot water supply pressure of the non-pressure-type hot water supply device, realizing the high-speed jet to increase the energy of the low-speed sucked liquid, and increasing the overall pressure energy of the device, but in use
  • the prior art found the following problems in the process:
  • the spacing between the nozzle and the throat is fixed to form an opening into the throat of the hot water, that is, in any case, the effluent of the throat is always mixed with a certain proportion of hot water therein.
  • the outlet water temperature of the throat cannot reach the temperature equivalent to cold water, especially when it is used in summer, the water temperature is hot and cannot be adjusted.
  • the Chinese patent document CN 1 02086941 B discloses a water mixing valve comprising a valve body, a valve body hot water inlet, a valve body water outlet, and a nozzle communicating with the valve body cold water inlet.
  • the nozzle is provided with a nozzle cold water inlet and a nozzle cold water outlet;
  • the valve body is provided with a hot water regulating chamber connected to the valve body hot water inlet, and a water mixing chamber connected to the valve body water outlet.
  • the mixing water chamber and the hot water regulating chamber are connected through a valve body hot water outlet located at one end of the hot water regulating chamber, and the mixing chamber is also connected to the nozzle through the nozzle cold water outlet; when the hot water flow needs to be adjusted, Screw in or out the nozzle to reduce or increase the cross-sectional area of the hot water outlet to reduce the hot water flow. When the cold water flow needs to be adjusted, simply screw in or out the needle valve to adjust the nozzle.
  • the cross section of the nozzle can be.
  • the nozzle is adjusted in the axial direction of the adjustable jet valve
  • the cold water pressure at the nozzle cold water inlet on the nozzle is always consistent with the cold water pressure at the cold water port on the spool housing.
  • the needle valve moves together with the nozzle.
  • the nozzle and the needle valve do not move relatively, so that the cross-sectional area of the cold water outlet remains unchanged, so that when the cold water inlet is
  • the cross-sectional area is smaller than the cross-sectional area of the cold water outlet, the water pressure of the cold water in the nozzle will be small, it is difficult to achieve a better injection effect, and even the injection effect cannot be produced, and in order to ensure a better injection effect, the needle valve needs to be adjusted at the same time. Therefore, the cross-sectional area of the cold water outlet is reduced, and the needle valve and the nozzle are simultaneously adjusted, which increases the difficulty of use, and if the needle valve and the nozzle are not adjusted at the same time, it is difficult to ensure a good water discharge effect and high use.
  • the technical problem to be solved by the present invention is to overcome the problem that the jet flow of the adjustable jet valve in the prior art is general, and the operation of adjusting the temperature of the hot and cold mixed water is complicated and error-prone, thereby providing a good jet effect and being difficult to use.
  • Adjustable adjustable flow valve Further provided is an adjustable jet that is capable of stable operation at different pressures and flow rates of the fluid Valve.
  • the present invention is an adjustable jet valve comprising a valve body, the valve body being provided with a cold water port, a hot water port and a water mixing port for mixing water output; a nozzle disposed at the valve a nozzle cold water inlet and a nozzle cold water outlet through which the cold water port can communicate with the cold water passage of the valve; a needle can be assembled inside the nozzle to form a cold water inflow space with the inner cavity of the nozzle a nozzle cold water outlet forming a cold water jet outlet; a throat connected to the water mixing port of the valve body for guiding the mixed water into the mixed water use device; the needle being in the adjustable jet valve
  • the position in the axial direction is fixed, the position of the nozzle in the axial direction of the adjustable jet valve is adjustable, and the cold water inflow space, the hot water port and the Adjustment of the cold water jet outlet.
  • the rotating member seal is rotatably disposed in the valve body, and is coupled to the spray needle to drive the spray needle to rotate simultaneously; the nozzle is adjusted by axial movement to adjust the structure and the The rotating member cooperates with the axial movement; the valve body cooperates with the nozzle by the limiting rotating structure, so that the nozzle does not rotate relative to the valve body when the rotating member drives the needle to rotate, but It is movable relative to the valve body in the axial direction of the needle under the action of the movement adjustment structure.
  • the axial movement adjustment structure includes an internal thread formed on the nozzle and an external thread formed on the rotating member and matched with the internal thread, and the threaded stroke of the internal thread and the external thread is not a distance from the nozzle cold water outlet of the nozzle to the throat.
  • the restricting rotation structure is a polygonal end surface formed on the nozzle, and an inner wall shape of the valve body is matched with the polygonal end surface.
  • the restricting rotation structure is a flange circumferentially disposed at an end of the nozzle, and a guide groove provided on the inner wall of the valve body in the axial direction and slidably engaged with the flange.
  • the restricting rotation structure is a flange provided on an inner wall of the valve body and a guide groove provided on an end portion of the nozzle in an axial direction and slidably engaged with the flange.
  • a pair of radially outwardly extending circumferential flanges are formed between the nozzle cold water inlet of the nozzle and the nozzle cold water outlet, and a sealing member may be disposed between the circumferential flanges, the nozzle being located at the circumferential convex
  • the hot water section between the rim and the nozzle cold water outlet may be in communication with the hot water passage of the valve.
  • the throat is assembled in the valve body, and the valve body is formed with a hot water port communicating with the hot water passage and the throat, and the throat has a diameter pipe section and a expansion pipe section.
  • the diameter of the inner diameter of the diameter pipe section is 5 mm to 14 mm, the length of the diameter pipe section is 5-8 times of the diameter of the inner hole, and the expansion angle of the expansion pipe section is 5 to -15 degrees.
  • the nozzle cold water outlet of the nozzle has a diameter of 3 mm to 10 mm.
  • the needle includes a needle body and a crotch portion disposed at an end of the needle body and cooperating with a nozzle cold water outlet of the nozzle, the needle body being circumferentially provided with a support body, When the needle is assembled in the nozzle, the outer surface of the support cooperates with the inner cavity of the nozzle to position the needle body to form a fluid passage between the supports.
  • the support body includes a plurality of ribs uniformly distributed circumferentially around the needle main body and extending in an axial direction thereof, and the plurality of ribs form the fluid passage therebetween.
  • the rib includes a first rib portion and a second rib portion, the first rib portion has a radial dimension smaller than a radial dimension of the second rib portion, and the first rib portion and the rib portion The length value of the second rib portion is such that the outer surface of the second rib portion is engaged with the inner cavity of the nozzle.
  • the ribs are three or four or five or six, and the cross section of the fluid passage formed between the plurality of ribs is larger than the cross section of the nozzle cold water outlet of the nozzle
  • a pressurized mixed water section is provided between the support body of the needle main body and the stirrup portion, and the pressurized mixed water section has a cylindrical shape.
  • the diameter of the pressurized mixed water section is greater than, equal to, or slightly smaller than the diameter of the nozzle opening of the nozzle; the diameter of the stirrup portion is reduced from its root to the front end portion, and its length is less than or equal to the nozzle Move the trip.
  • the diameter of the beak of the needle linearly decreases from its root to the front end.
  • the position of the needle in the axial direction of the adjustable jet valve is fixed, and the position of the nozzle in the axial direction of the adjustable jet valve is adjustable through the axial direction. Adjusting the nozzle can simultaneously adjust the cold water inflow space, the hot water port and the cold water jet outlet, and the arrangement overcomes the prior art adjustable jet valve, which needs to adjust the nozzle and the needle separately to achieve the heat.
  • the water inflow and the cold water inflow are adjusted to solve the problem of complicated and error-prone operation in the prior art, and the adjustment of the hot water inflow and the cold water inflow can be realized only by adjusting the axial displacement of the nozzle, and the operation is simple and difficult. An error occurred.
  • the needle is disposed in the nozzle, and a cold water inflow space and a cold water jet outlet are formed between the nozzle and the needle, and the nozzle cold water inlet and the cold water port respectively
  • the cold water inflow space is connected, and in use, the adjustment of the cold water inflow space, the hot water port and the cold water jet outlet can be realized by adjusting the nozzle to move along the axis direction of the adjustable jet valve, specifically: when the nozzle moves When the cold water jet outlet is made smaller, the hot water port becomes larger, so that the adjustment of the water mixing temperature can be realized with a relatively simple operation, and more importantly, in the present invention, the cold water port is always with the cold water jet outlet. The pressure is equal.
  • the rotating member is rotatably disposed in the valve body, and is coupled to the needle to drive the needle to rotate at the same time, the rotating member can be selected Made of a relatively inexpensive material compared to the needle, this configuration reduces the production cost of the adjustable jet valve of the present invention.
  • the axial movement adjustment structure is an internal thread formed on the nozzle and An external thread formed on the rotating member and engaged with the internal thread, because the rotating member cannot move in the axial direction of the adjustable jet valve, and the nozzle is restricted by the limited rotating structure
  • the valve body rotates, so that when the rotating member rotates, the external thread cooperates with the internal thread on the nozzle to move the nozzle along the axis direction of the adjustable jet valve, and the arrangement is simple and simple. Easy to install and easy to process.
  • the restricting rotating structure is a polygonal end surface formed on the nozzle, and an inner wall shape of the valve body is matched with the polygonal end surface.
  • the setting structure is simple, easy to process and reliable.
  • the throat has a diameter pipe section and a expansion pipe section, and the cold water injected at a high speed forms a negative pressure in the diameter pipe section to form a suction action, and the hot water is sucked through the hot water port.
  • the flow rate of the mixed water is still high, and the kinetic energy is large, and the setting of the expansion pipe section converts a part of the kinetic energy of the high-speed jet mixed water into pressure energy, and increases the injection of the mixed water.
  • the pressure is conducive to the injection of mixed water into the mixed water use equipment.
  • the needle includes a needle body and a beak portion disposed at an end of the needle body and cooperating with a nozzle cold water outlet of the nozzle, the needle body being circumferentially disposed a support body, wherein when the needle is assembled in the nozzle, an outer surface of the support body cooperates with an inner cavity of the nozzle to limit the needle body, and a fluid passage is formed between the support body
  • the arrangement of the support body overcomes the problem that the needle of the prior art is deviated from the nozzle of the nozzle or will be radially oscillated in the case where the fluid pressure is large or the fluid flow rate is unstable, and the support body is The outer surface is in contact with the inner cavity wall of the nozzle to achieve a limit on the needle body, which enhances the jet effect.
  • Figure 2 is a cross-sectional structural view of the adjustable jet valve of the present invention
  • Figure 3 is a schematic view showing the structure of the nozzle of the present invention and the needle
  • Figure 4 is a schematic perspective view of the nozzle of the present invention
  • Figure 5 is a schematic perspective view of the needle of the present invention
  • Figure 7 is a cross-sectional view of the three-dimensional structure of the nozzle of the present invention
  • Figure 7 is a structural form of the diffuser pipe section of the throat of the present invention
  • Figure 8 is a view of the diffuser pipe section of the throat pipe of the present invention Another form of structure.
  • the reference numerals in the figure are: 1-needle body, la-pressurized mixing section, 2- ⁇ -shaped part, 2a-root part, 2b-front end part, 3-fluidic channel, 4-ribbed rib, 41- One rib, 42-second rib, 9-nozzle, 91-nozzle cold water inlet, 92-nozzle cold water outlet, 93-polygon end face, 94-circumferential flange, 95-hot water section, 96-nozzle ⁇ , 11-throat, 11a-diameter, l ib-expanded, 12-valve, 12a-hot water, 12b-cold, 13-rotary, 15-cold water inflow, 16- Cold water jet outlet, ⁇ -expansion angle.
  • the adjustable jet valve provided in this embodiment is suitable for being installed in a valve, and includes a valve body 12, the valve body is provided with a cold water port, and the cold water port 12 b is used for a cold water passage of the valve is connected, a hot water port 12a for communicating with the hot water passage hot water port of the valve, and a water mixing port for mixing the hot and cold water, and a nozzle 9 disposed in the valve body and having a passage a nozzle cold water inlet and a nozzle cold water outlet connected to the cold water passage of the valve; a needle, which is fit inside the nozzle, forms a cold water inflow space 15 with the inner cavity of the nozzle, and a cold water outlet of the nozzle Forming a cold water jet outlet 16; a throat pipe connected to the water mixing port of the valve body for guiding the mixed water out.
  • the position of the needle in the axial direction of the adjustable jet valve is fixed,
  • the position of the nozzle in the axial direction of the adjustable jet valve is adjustable, and the adjustment of the cold water inflow space 15, the hot water outlet and the cold water injection outlet 16 can be simultaneously achieved by axially adjusting the nozzle.
  • the specific working principle is as follows: the distance between the needle and the throat 11 is fixed, and the nozzle 9 moves axially between the needle and the throat 1 1
  • the flow rate of the cold water inlet water is decreased, the flow rate of the hot water inlet water is increased, and the temperature of the mixed water outlet water is increased;
  • the nozzle 9 is moved toward one end of the throat tube 11, the cold water
  • the flow rate of the inflow water increases, the flow rate of the hot water into the water decreases, and the temperature of the mixed water outlet water decreases.
  • the adjustable jet valve provided in the embodiment can adjust the cold water inflow space 15, the hot water port 12a and the cold water jet outlet 16 only by axially adjusting the movement of the nozzle 9.
  • the adjustable jet valve In order to overcome the suitable mixed water temperature in the prior art, the adjustable jet valve must adjust the needle and the nozzle at the same time, and the technical problem is difficult and error-prone.
  • the cold water pressure at the nozzle cold water inlet 91 thereon is always the same as the valve
  • the cold water pressure at the cold water port 12b on the core casing 12 is kept uniform. This can be achieved in two ways:
  • Manner 1 The length of the opening of the nozzle cold water inlet 91 along the axial direction of the needle is greater than or equal to the sum of the axial opening length of the cold water port 12b and the moving stroke of the nozzle 9, so that the nozzle 9 is in the adjusted position, the cold water port 12b It is always within the opening length of the nozzle cold water inlet 91, so that the cold water injection pressure inside the nozzle can be maintained at all times.
  • the opening length of the chiller port 12b along the axial direction of the needle is greater than or equal to the sum of the opening length of the nozzle cold water inlet 91 along the axial direction of the needle and the moving stroke of the nozzle 9, and the nozzle can also be made.
  • the nozzle cold water inlet 91 is always within the opening length of the cold water port 12b, so that the cold water injection pressure inside the nozzle can be maintained at all times.
  • the above two arrangements ensure that the pressure of the chiller 12b is equal to the pressure of the cold water jet outlet 16, preventing the nozzle 9 from appearing in the axial movement during the axial movement as in the prior art.
  • the pressure is less than the pressure of the cold water injection outlet 16, but the prior art In the case where the cold water inlet pressure of the nozzle is smaller than the pressure of the cold water injection outlet 16, due to its own structural limitation, the cold water injection outlet can only be made by adjusting the axial displacement of the needle again.
  • the pressure of 16 is greater than or equal to the cold water inlet pressure of the nozzle 9 to cause the cold water jet to be normally injected.
  • the jet valve core of the embodiment of the present invention further includes a rotating member 13 for assisting the nozzle 9 to adjust its axial position.
  • the rotating member 13 is rotatably disposed on the valve body 12 by a seal such as an O-ring, and is axially moved and engaged with the nozzle 9 by an axial movement adjusting structure (described in detail below). The rotational motion of the rotating member 13 is converted into the axial movement of the nozzle 9.
  • the axial movement adjustment structure may be a rack and a gear that are coupled to each other, that is, the rack 9 is provided with the rack, and the rotating member 13 is coupled with the gear to drive the nozzle 9 to move axially.
  • the rotating member 13 is coupled to the needle to drive the needle to rotate at the same time.
  • the rotating member 13 and The end of the needle connection is formed with an internally threaded hole, and the end of the needle is formed with an externally threaded portion, which can be connected by a threaded fit; of course, the rotating member 13 and the needle can also be integrally formed;
  • valve body 12 is engaged with the nozzle 9 by a limiting rotation portion (described in detail below) to move the nozzle 9 relative to the valve body 12 when the rotating member 13 drives the needle to rotate. Not rotating, but under the action of the axial movement adjustment structure, it is movable relative to the valve body 12 in the axial direction of the needle.
  • the axial movement adjusting structure may also be other structures, such as a matching structure of the helical gear and the rack, which can convert the rotating motion of the helical gear into a rack.
  • the movement that is, the rack 9 is provided with a rack, and the rotating member 13 is provided with a helical gear, so that the nozzle 9 is moved by the rotary rotating member 13 in the axial direction of the needle.
  • the nozzle 9 does not rotate but can be along the needle with respect to the valve body 12 under the action of the axial movement adjusting structure 7.
  • the technical effect of the axial direction movement is set in the embodiment.
  • the valve body 12 is coupled to the nozzle by a limiting rotation structure to rotate the needle when the rotating member drives the nozzle.
  • the valve body is not rotated, but it is movable relative to the valve body in the axial direction of the needle under the action of the axial movement adjustment structure.
  • the restricting rotation structure is a polygonal end surface formed on the nozzle, and correspondingly, an inner wall shape of the valve body is shaped to match the polygonal end surface.
  • the restricting rotation structure may further be a flange provided on an inner wall of the valve body and disposed along an axial direction on the side wall of the nozzle and the convex portion
  • the guide groove of the edge sliding fit may also be a guiding groove formed on the inner wall of the valve body and formed on the side wall of the nozzle 9 and arranged along the axial direction. a guide groove that slidably engages the flange.
  • the adjustable jet valve of the present invention is provided.
  • a good jet effect can be achieved.
  • a pair of radially outwardly extending circumferential flanges are formed between the nozzle cold water inlet and the nozzle cold water outlet of the nozzle.
  • the hot water section of the nozzle between the circumferential flange and the nozzle cold water outlet may be in communication with a hot water passage of the valve.
  • the chiller opening 12b is completely separated from the hot water port 12a, and the outer surface of the circumferential flange is closely attached to the inner surface of the nozzle 9 during assembly.
  • a sealing member such as a sealing ring, is fitted between a pair of the circumferential flanges 94 to further improve the sealing effect.
  • the throat pipe 11 is assembled in the valve body 12, and the valve body is formed with a hot water port communicating with the hot water passage and the throat pipe.
  • the function of the throat 11 is mainly for the thorough mixing of hot and cold water and the exchange of energy, and the throat 11 has a diameter pipe section 11a and a expansion pipe section l ib.
  • the diameter of the inner diameter of the diameter pipe section 11a is 5mm-14mm, preferably 6 ⁇ -10 ⁇ , but the range is not the protection range defined by the present invention, and according to different work requirements, the pass
  • the inner diameter of the diameter section 11a can be selected to a larger range, which is selected to be 8 ⁇ in this embodiment.
  • the length of the diameter pipe section is 5-8 times, preferably 6 times, the diameter of the inner hole.
  • the function of the expanding pipe section l ib is to change a part of the kinetic energy of the mixed water at the outlet of the throat 11 into pressure energy, and there is a diffusion loss in the process of energy conversion.
  • the amount of diffusion loss is related to the distribution of the flow velocity of the dilation tube segment ib, the magnitude of the dilation angle, and the ratio of the diameter of the diffusion section.
  • the expansion angle selection range a is 5. -15°, but not limited to 5° -15°, preferably 12°.
  • the expansion tube segment ib is preferably a linear continuous expansion, but may also be a stepwise continuous expansion, and the specific form of the expansion is not limited.
  • the expansion tube segment ib is gradually expanded from its small end to the large end.
  • the diameter of the nozzle cold water outlet of the nozzle 9 is 3 ⁇ -10mm, preferably 4mm-6mm, but the protection range of the present invention is not limited to this range, in this embodiment
  • the middle is chosen to be 5mm.
  • the needle of the present invention can be prevented from being affected by fluid pressure, thereby achieving a good jetting effect.
  • the needle comprises a needle body 1 and a dome disposed at an end of the needle body 1 and cooperating with a nozzle cold water outlet of the nozzle.
  • a needle body 1 is circumferentially provided with a support body, such that when the needle is assembled in the nozzle, an outer surface of the support body cooperates with an inner cavity of the nozzle to the needle body 1 Limiting, forming a fluid passage between the supports.
  • the pressure of the fluid passing through the nozzle 9 is large or large and the flow velocity is unstable, that is, along the length direction of the needle, the radial pressure of the different portions of the needle is even different. Large, it is also possible to effectively prevent the needle from deviating from the nozzle of the nozzle 9 or causing radial shaking or swinging due to the uneven radial pressure in the radial direction without affecting the smooth flow of the fluid. The effect of the ejection of the nozzle opening 10 of the nozzle 9 is avoided.
  • the support body can have a plurality of different structural forms, and several structures of the support body will be described in detail below with reference to the accompanying drawings, but it is to be understood that The support is not limited to the structure described below, and various modifications, substitutions or modifications can be made by those skilled in the art.
  • the first structure of the support is the first structure of the support:
  • the support body includes a plurality of ribs 4 which are distributed around the outer surface of the needle main body 11 in the circumferential direction and extend in the axial direction of the needle.
  • a plurality of ribs 4 form the fluid passage 3 between each other.
  • the rib 4 may be formed by a machining method such as a cutting method, or may be formed at a time with the needle main body 11 by casting or injection molding, and an appropriate molding method may be selected according to actual conditions.
  • the rib 4 includes a first rib 41 and a first a second rib portion 42 , wherein the first rib portion 41 is opposite to the nozzle cold water inlet 91 of the nozzle 9 and has a radial dimension smaller than a radial dimension of the second rib portion 42 to be in contact with the nozzle 9
  • the inner cavity wall forms the fluid passage, and the outer surface of the second rib portion 42 engages with the inner cavity of the nozzle 9. Therefore, by the structural improvement of the rib 4, the ejection effect of the nozzle 9 can be improved while ensuring the support body to limit the needle.
  • the needle can be reciprocated along the axial direction of the nozzle or rotated in the nozzle under the restriction of the support.
  • the inner cavity wall of the nozzle 9 may be formed with a slot corresponding to the second rib portion 42, the slot extending along the axial direction of the nozzle 9, and the second rib portion 42 may be Fitted in the slot and slid along the axial direction of the nozzle.
  • the slit has a guiding action and an anti-rotation effect on the needle at the same time, that is, the needle can only reciprocate in the axial direction of the nozzle and cannot rotate in the nozzle.
  • the number of the ribs 4 is three, four, five, six, wherein four ribs 4 are preferred, and the number of the ribs 4 is not particularly limited as long as The technical effect of the present invention can be achieved; the cross section of the fluid passage 3 formed between the plurality of ribs 4 is larger than the cross section of the nozzle cold water outlet 92 of the nozzle 9, and the arrangement manner It is ensured that the water pressure at the nozzle cold water outlet 92 is large, and the good jetting effect of the cold water jet outlet 16 is further ensured.
  • the support body is an annular support plate 5 disposed on the needle main body 11, and a plurality of plates are formed on the plate surface of the annular support plate 5 to serve as the fluid passage.
  • the annular support plate 5 can have a suitable thickness according to actual needs.
  • the shape of the flow guiding hole 6 is not limited to the circular hole shape shown in FIG. 4, and may also be a fan-shaped hole. Meanwhile, the flow guiding hole 6 should be set to pass through. The flow rate of the fluid does not have an effect or has a slight influence.
  • the junction of the guide hole 6 and the plate surface of the annular support plate 5 forms a circular arc which is favorable for fluid flow.
  • the support body is a ring 7, which is connected to the needle main body 11 by a plurality of ribs 8, which form the fluid between each other. Channel 3.
  • the ring 7 and the ribs 8 are shaped to facilitate smooth flow of fluid to have a slight or no effect on fluid flow.
  • the support body of the needle main body 1 and the crotch portion 2 have a pressurized mixed water section 1 a , and the pressurized mixed water section 1 a
  • the shape is a cylindrical shape, so that after the needle is assembled with the nozzle, as shown in FIG. 2, the pressurized mixed water section 1a of the needle can form a cold water inflow space 15 between the inner wall of the nozzle, which can ensure the passage.
  • the fluid introduced by the fluid passage is mixed and hooked in front of the injection jaw formed by the inlet portion 2 and the nozzle opening 10, and the supercharging effect is achieved, and the supercharging effect can be achieved, thereby ensuring the final good injection effect of the nozzle opening 10 of the nozzle 9.
  • the pressurized mixed water section la is selected to be 7 mm.
  • the diameter of the pressurized mixed water section la is greater than, equal to, or slightly smaller than the diameter of the nozzle opening 10 of the nozzle; More than or equal to "and” is slightly smaller than "interpretation”: when the diameter of the root portion of the beak portion of the needle is larger than the diameter of the nozzle cold water outlet 92 of the nozzle 9, the nozzle 9 moves in the axial direction, When the hot water port 12a has the largest opening and the cold water jet outlet 16 is closed, the outlet edge of the nozzle cold water outlet 92 of the nozzle 9 is in contact with the edge of the beak of the needle, and the closed a cold water jet outlet 16; when the diameter of the root of the beak of the needle is slightly smaller than the diameter of the nozzle cold water outlet 92 of the nozzle 9, the nozzle 9 moves in the axial direction, when the hot water port When the opening of the 12a is maximum, the ridge of the needle passes through The nozzle cold water outlet 92 of the nozzle 9 closes most of the cold water spray outlet 16,
  • the length of the pressurized mixed water section la may not be too short, otherwise the nozzle water outlet fork may be caused, that is, the length of the pressurized mixed water section la and the cross section of the fluid passage, the cross section of the nozzle outlet, and The thickness of the support is related, but the effect will not be large.
  • the diameter of the beak portion 2 is reduced from the crotch portion 2a to the front end portion 2b, and the twist is 20° - 90°, and the twist includes 20° and 90°.
  • the angle of the crotch portion 2 can be less than or equal to the movable stroke of the nozzle 9 after the needle is assembled with the nozzle 9, so that the nozzle cold water outlet 92 and the crotch portion 1 can be appropriately formed.
  • the cold water ejection outlet 16 of the nozzle has a twist greater than or equal to the twist of the beak portion 2 of the needle.
  • the corner of the beak of the nozzle may be 30. -100.
  • the range change is selected to be 60° in this embodiment.
  • the diameter of the beak portion 2 is linearly continuously reduced from the root portion 2a to the front end portion 2b, i.e., the crotch portion 2 is a dome-shaped structure.
  • the crotch portion 2 and the nozzle cold water outlet 92 of the nozzle 9 may be linearly fitted.
  • the beak 2 can also be fluid-linearly non-linear or in the form of an object parabolic surface to automatically make some appropriate adjustments depending on the flow rate of the fluid.
  • the adjustable jet valve of the present invention has an important influence on the effect of the cold water jet of the adjustable jet valve on the effect of the hot water pumping of the adjustable jet valve.
  • the test proves that the overall structure of the adjustable jet valve of the present embodiment is combined with specific parameters. It has a very good negative pressure adsorption effect when the cold water volume is small.
  • Table 1 shows that when the temperature is adjusted to the intermediate state, the overall structure of the adjustable jet valve in this embodiment is combined.
  • the specific parameters also have a very good negative pressure adsorption effect when used.

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Abstract

一种可调射流阀，包括阀体（12），阀体上设有冷水口（12b），热水口（12a）和用于混合水输出的混水口；喷嘴（9），设置在阀体内，具有通过冷水口（12b）可与阀门的冷水通道相连通的喷嘴冷水进口（91）以及喷嘴冷水出口（92）；喷针，可装配在喷嘴（9）内部，与喷嘴（9）的内腔形成冷水入流空间（15），与喷嘴冷水出口（92）形成冷水喷射出口（16）；喉管（11），连接于阀体（12）的混水口处，用于将混合水导流至混合水使用设备中；喷针在可调射流阀的轴线方向上的位置固定不动，喷嘴（9）在可调射流阀的轴线方向上的位置可调，通过轴向调节喷嘴（9），可以同时实现调节冷水入流空间、热水口（12a）和冷水喷射出口（16）。该可调射流阀的射流效果好，使用便捷，不容易出错。

Description

可调射流阀 技术领域
本发明涉及用于供水设备的射流装置领域， 具体地， 涉及一种用于太阳 能热水器冷热水混合的可调射流阀。 背景技术
目前， 太阳能热水器中常用的射流装置适用于高压系统， 通常釆用两 种方式提供压力：
一种是将热水器置于房顶依靠重力落差为热水提供压力， 但是在该种 设置方式下一旦出现重力落差较小， 就会出现压力供给不足， 热水出水量较 少的问题， 导致人在洗浴时水温较低， 体感不舒服， 另外， 该种设置方式下 冷热水压力相差过大， 容易产生逆流的问题； 另外一种是通过在热水器中设置压力装置为热水供给提供压力， 该种 设置方式一定程度上解决了热水压力供给不足的问题，但是由于添加了压力 装置以及热水器必须为承压装置，该种设置方式在上述基础上大大提高了生 产成本， 不利于大批量生产。 为了解决现有技术中射流装置热水压力供给不足以及设置压力装置成 本过高的问题， 中国专利文献 CN 102767210 A公开了一种多水源可调射流 装置， 该多水源可调射流装置包括射流器主体， 流体工作腔， 喷针、 喉管、 扩散管、 射流器入水口 （冷水进口）、 被吸液体入水口 （热水进口）， 流体工 作腔设置在射流器主体内， 在流体工作腔的前端设置有喷嘴， 喷针设置在流 体工作腔内喷嘴中心线的延长线上。 高压冷水由射流器入水口进入射流器 , 经过流体工作腔到达喷嘴， 沿喷针针尖高速射入喉管中， 利用卷吸作用在喉 管中形成负压， 对与喉管相连通的热水进水口有抽吸作用， 该现有技术利用 高速射流卷吸作用的原理解决了非承压式热水供给装置的热水供给压力不 足的问题， 实现了高速射流提升低速被吸液体的能量， 增加了装置的整体压 能， 但是在使用过程中发现该现有技术存在以下问题：
在该现有技术中， 喷嘴和喉管之间间距固定， 形成热水进入喉管中的开 口， 即不管在何种情况下， 喉管的出水中总是混合一定比例的热水在其中， 在该种情况下， 喉管的出水温度是无法达到等同于冷水的温度的， 尤其是在 夏天使用时会感觉水温较烫且无法调下来。
鉴于上述情况， 中国专利文献 CN 1 02086941 B公开了一种混水阀门， 其 包括阀体， 阀体热水进口、 阀体出水口， 还包括一个与所述阀体冷水进口相 连通的喷嘴， 所述喷嘴上设有喷嘴冷水进口和喷嘴冷水出口； 所述阀体内设 有与所述阀体热水进口相连的热水调节腔， 以及与所述阀体出水口相连的混 水腔， 所述混水腔与所述热水调节腔通过位于热水调节腔一端的阀体热水出 口相连， 并且混水腔还与所述喷嘴通过喷嘴冷水出口相连； 当需要调整热水 流量时， 可以向阀体内旋进或旋出喷嘴， 减小或增大热水出口的截面积， 从 而减小热水流量； 需要调整冷水流量时， 则只需旋进或旋出针阀以调整喷嘴 的出水口截面积即可。 该现有技术解决了中国专利文献 CN 1 0276721 0 A中喉 管的出水中总是混合一定比例的热水的问题， 提高了用户在夏天使用的体感 舒适度， 但是在使用中发现该现有技术还是存在一些问题：
1、 在该现有技术中， 用户为了得到较适宜温度的冷热混合水， 需要分别 调控喷嘴和针阀来对热水进水量和冷水进水量进行调节， 而用户在洗浴时往 往较难同时调控两个阀门来对混合水的温度进行调节， 而该种调控方式复杂 易出错， 甚至， 当用户感觉混合水温较高， 体感较烫时， 需将冷水进水阀门 调大， 但是如果误将热水进水阀门调大时可能会出现烫伤的情况。
2、 在该现有技术中， 所述喷嘴在所述可调射流阀的轴线方向上调节位置 时， 其上的所述喷嘴冷水进口处的冷水压力始终与所述阀芯壳体上的所述冷 水口处的冷水压力保持一致。 而现有技术中， 在旋转喷嘴时， 针阀与喷嘴一 同运动， 在此过程中， 喷嘴和针阀不发生相对运动， 从而使得冷水出口的截 面积一直保持不变， 这样， 当冷水进口的截面积小于冷水出口的截面积时， 喷嘴内冷水的水压将很小， 难以实现较好的喷射效果， 甚至不能产生喷射效 果， 而为了保证较好的喷射效果， 就需要同时调整针阀， 从而将冷水出口的 截面积减小， 进而要求对针阀和喷嘴进行同时调节， 增大了使用难度， 而若 不同时调整针阀和喷嘴则将难以保证较好的出水效果以及较高的使用舒适 度， 而本发明中， 由于所述喷嘴冷水进口处的冷水压力始终与所述阀芯壳体 上的所述冷水口处的冷水压力保持一致， 因此不会出现上述喷射效果不好或 者不能发生喷射效果的问题。
3、 在该现有技术中， 与上述中国专利文献 CN 102767210 A共同存在的 问题： 在该现有技术与中国专利文献 CN 102767210 A所公开的一种多水源可 调射流装置中所釆用的喷针皆为长细结构， 其头部为针状， 该种设置方式成 本较低， 在通过喷嘴的流体压力较小的情况下， 该种细长形状的喷针在其径 向方向上承受的压力较小， 其能够满足工作要求， 但是当通过喷嘴的流体压 力较大或者 4艮大， 并且流体流速不稳定的情况下， 喷针在其径向方向上将承 受^ ί艮大的不均匀的径向压力， 即沿着喷针的长度方向， 不同部位承受的径向 压力将不同， 从而导致该喷针与喷嘴的喷口偏离或者喷针将发生径向摆动， 影响到喷嘴的喷射效果。 发明内容
为此，本发明所要解决的技术问题在于克服现有技术中可调射流阀射流 效果一般， 并对冷热混合水温调节操作复杂易出错的问题，从而提供一种射 流效果良好， 并使用便捷不易出错的可调射流阀。 进一步提供一种在流体的不同压力和流速下能够稳定运行的可调射流 阀。
为解决上述技术问题， 本发明是一种可调射流阀，包括阀体， 所述阀体上 设有冷水口、 热水口和用于混合水输出的混水口； 喷嘴，设置在所述阀体内， 具有通过所述冷水口可与阀门的冷水通道相连通的喷嘴冷水进口以及喷嘴冷 水出口； 喷针， 可装配在所述喷嘴内部， 与所述喷嘴的内腔形成冷水入流空 间， 与所述喷嘴冷水出口形成冷水喷射出口； 喉管， 连接于所述阀体的所述 混水口处， 用于将混合水导流至混合水使用设备中； 所述喷针在所述可调射 流阀的轴线方向上的位置固定不动， 所述喷嘴在所述可调射流阀的轴线方向 上的位置可调， 通过轴向调节所述喷嘴可以同时实现对所述冷水入流空间、 热水口和冷水喷射出口的调节。
还包括转动件， 其中， 所述转动件密封可转动地设置在所述阀体中， 并 与所述喷针连接以带动所述喷针同时转动； 所述喷嘴通过轴向移动调节结构 与所述转动件相对轴向移动配合； 所述阀体通过限制转动结构与所述喷嘴配 合， 以在所述转动件带动所述喷针转动时， 所述喷嘴相对于所述阀体不转动， 但其在所述移动调节结构的作用下， 能够相对于所述阀体沿着所述喷针的轴 向方向移动。
所述轴向移动调节结构包括成型在所述喷嘴上的内螺纹以及成型在所述 转动件上并与所述内螺纹配合的外螺纹， 所述内螺纹与所述外螺纹的螺纹配 合行程不小于所述喷嘴的所述喷嘴冷水出口到所述喉管的距离。
所述限制转动结构为成形在所述喷嘴上的多边形端面， 所述阀体的内壁 形状与所述多边形端面相配合。
所述限制转动结构为在所述喷嘴的端部周向设置的凸缘以及在所述阀体 的内壁上沿着轴向方向设置并与所述凸缘滑动配合的导向槽。
所述限制转动结构为在所述阀体的内壁上设置的凸缘以及在所述喷嘴的 端部上沿着轴向方向设置并与所述凸缘滑动配合的导向槽。 所述喷嘴的喷嘴冷水进口和喷嘴冷水出口之间成形一对径向向外延伸的 周向凸缘， 所述周向凸缘之间可装配有密封件， 所述喷嘴位于所述周向凸缘 和所述喷嘴冷水出口之间的热水段可与阀门的热水通道相连通。 所述喉管装配在所述阀体中， 所述阀体上成形有与热水通道以及所述喉 管相通的热水口， 所述喉管具有通径管段和扩张管段。
所述通径管段的内孔直径为 5mm-14mm, 所述通径管段的长度为其内孔直 径的 5-8倍， 所述扩张管段的扩张角度为 5° -15° 。 所述喷嘴的喷嘴冷水出口的直径为 3mm-10mm。 所述喷针包括喷针主体和设置在所述喷针主体端部并与所述喷嘴的喷嘴 冷水出口相配合的雉形部， 所述喷针主体周向设置有支撑体， 以在所述喷针 装配在喷嘴中时， 所述支撑体的外表面与所述喷嘴的内腔配合以对所述喷针 主体限位， 在所述支撑体之间形成流体通道。 所述支撑体包括围绕所述喷针主体周向均布并沿其轴向方向延伸设置的 多个凸肋， 所述多个凸肋相互之间形成所述流体通道。 所述凸肋包括第一凸肋部和第二凸肋部， 所述第一凸肋部的径向尺寸小 于所述第二凸肋部的径向尺寸， 所述第一凸肋部与所述第二凸肋部的长度值 为， 所述第二凸肋部的外表面与所述喷嘴的内腔配合。 所述凸肋为三个或四个或五个或六个， 所述多个凸肋相互之间形成的所 述流体通道的过水截面大于所述喷嘴的所述喷嘴冷水出口的截面 所述喷针主体的所述支撑体和所述雉形部之间具有的增压混水段 , 该增 压混水段的形状为圓柱形状。 所述增压混水段的直径大于、 等于或者略小于所述喷嘴的喷嘴口的直径； 所述雉形部的直径从其根部到前端部缩小， 并且其长度小于或等于所述 喷嘴的可移动行程。 所述喷针的所述雉形部的直径从其根部到前端部线性连续缩小。 所述喷嘴在所述射流阀的轴线方向上调节位置时， 其上的所述喷嘴冷水 进口始终与所述阀体上的所述冷水口相对应。 本发明的上述技术方案相比现有技术具有以下优点：
1、 在本发明中， 所述喷针在所述可调射流阀的轴线方向上的位置固定 不动， 所述喷嘴在所述可调射流阀的轴线方向上的位置可调， 通过轴向调节 所述喷嘴可以同时实现对所述冷水入流空间、热水口和冷水喷射出口的调节， 该种设置方式克服了现有技术中的可调射流阀需要分别调节喷嘴和喷针才 能实现对热水进水量和冷水进水量进行调节 ,解决了现有技术操作复杂易出 错的问题，实现了只通过调节喷嘴轴向位移即可实现对热水进水量和冷水进 水量的调节， 且操作简单不易出错。
2、 在本发明中， 所述喷针设置在所述喷嘴内， 在所述喷嘴和所述喷针之 间形成冷水入流空间和冷水喷射出口， 所述喷嘴冷水进口分别与所述冷水口 和冷水入流空间连通， 在使用时， 只要调整喷嘴使其沿着所述可调射流阀的 轴线方向移动即可实现对冷水入流空间、 热水口和冷水喷射出口的调节， 具 体为： 当喷嘴移动使得冷水喷射出口变小时， 热水口变大， 从而以较为简单 的操作实现对混水温度的调整， 更为重要的是， 在本发明中， 所述冷水口始 终与所述冷水喷射出口的压力相等， 该种设置方式保证了冷水口流进的冷水 较小时， 冷水入流空间以及冷水喷射口依然能保持较高的水压， 从而具有较 好的喷射效果。 因此， 本发明的技术方案以较为简单的操作方式实现了较好 的喷射效果。
3、 在本发明中， 还包括转动件， 所述转动件密封可转动地设置在所述阀 体中， 并与所述喷针连接以带动所述喷针同时转动， 所述转动件可以选择与 所述喷针相比较为廉价的材料制成， 该种结构降低了本发明可调射流阀的生 产成本。
4、 在本发明中， 所述轴向移动调节结构为成型在所述喷嘴上的内螺纹和 成型在所述转动件上并与所述内螺纹配合的外螺纹， 由于所述转动件不能沿 所述可调射流阀的轴线方向移动， 同时所述喷嘴受到限制转动结构的限制不 能相对于所述阀体转动， 因此， 所述转动件转动时， 其外螺纹与所述喷嘴上 的内螺纹配合以使所述喷嘴沿所述可调射流阀的轴线方向移动， 该种设置方 式结构简单、 安装方便且容易加工。
5、 在本发明中， 所述限制转动结构为成形在所述喷嘴上的多边形端面， 所述阀体的内壁形状与所述多边形端面相配合， 该种设置结构简单， 容易加 工且工作可靠。
6、 在本发明中， 所述喉管具有通径管段和扩张管段， 高速射出的冷水在 所述通径管段形成负压， 形成卷吸作用， 热水通过所述热水口被抽吸入通径 管道中与冷水进行混合与能量传递， 混合水的流速依然很高， 动能很大， 而 扩张管段的设置使得高速喷射的混合水的一部分动能转化为压能， 增大了混 合水的喷射压力， 有利于混合水喷射至混合水使用设备中。
7、 在本发明中， 所述喷针包括喷针主体和设置在所述喷针主体端部并与 所述喷嘴的喷嘴冷水出口相配合的雉形部， 所述喷针主体周向设置有支撑体， 以在所述喷针装配在喷嘴中时， 所述支撑体的外表面与所述喷嘴的内腔配合 以对所述喷针主体限位， 在所述支撑体之间形成流体通道， 所述支撑体的设 置克服了现有技术中喷针在流体压力较大， 或者流体流速不稳定的情况下， 其与喷嘴的喷口偏离或者将发生径向摆动的问题， 所述支撑体的外表面与所 述喷嘴的内腔壁接触以实现对所述喷针主体的限位， 提高了射流效果。 附图说明 为了使本发明的内容更容易被清楚的理解，下面根据本发明的具体实施 例并结合附图， 对本发明作进一步详细的说明， 其中 图 1是本发明的可调射流阀的立体结构示意图；
图 2是本发明的可调射流阀的剖视结构示意图； 图 3是本发明的所述喷嘴与所述喷针的配合结构示意图； 图 4是本发明的所述喷嘴的立体结构示意图； 图 5是本发明的所述喷针的立体结构示意图； 图 6是本发明的所述喷嘴的立体结构的剖视图； 图 7是本发明的所述喉管的所述扩散管段的一种结构形式； 图 8是本发明的所述喉管的所述扩散管段的另一种结构形式。
图中附图标记表示为： 1-喷针主体， la-增压混水段， 2-雉形部， 2a-根部， 2b-前端部， 3-流体通道， 4-凸肋， 41-第一凸肋部， 42-第二凸肋部， 9-喷嘴， 91-喷嘴冷水进口， 92-喷嘴冷水出口， 93-多边形端面， 94-周向凸缘， 95-热 水段， 96-喷嘴雉形部， 11-喉管， 11a-通径管段， l ib-扩张管段， 12-阀体， 12a-热水口， 12b-冷水口， 13-转动件， 15-冷水入流空间， 16-冷水喷射出口， β -扩张角。
具体实施方式 以下结合附图对本发明的具体实施方式进行详细说明。 应当理解的是， 此处所描述的具体实施方式仅用于说明和解释本发明，并不用于限制本发明。
结合图 1、 图 2所示， 本实施例提供的可调射流阀， 适于安装在阀门中， 包括阀体 12 , 所述阀体上设有冷水口， 所述冷水口 12 b用于与阀门的冷水通 道连通， 用于与阀门的热水通道热水口连通的热水口 12a 和用于将冷热水混 合后输出的混水口； 喷嘴 9 , 设置在所述阀体内， 具有通过所述冷水口可与阀 门的冷水通道相连通的喷嘴冷水进口以及喷嘴冷水出口； 喷针， 可装配在所 述喷嘴内部， 与所述喷嘴的内腔形成冷水入流空间 15 , 与所述喷嘴冷水出口 形成冷水喷射出口 16 ; 喉管， 连接于所述阀体的所述混水口处， 用于将混合 水导流出。
其中， 所述喷针在所述可调射流阀的轴线方向上的位置固定不动， 所述 喷嘴在所述可调射流阀的轴线方向上的位置可调， 通过轴向调节所述喷嘴可 以同时实现对所述冷水入流空间 15、 热水口和冷水喷射出口 16的调节。 其具 体工作原理为： 所述喷针与所述喉管 11之间的距离是固定不变的， 所述喷嘴 9在所述喷针与所述喉管 1 1之间轴向移动， 当所述喷嘴 9移向所述喷针针端 时， 冷水入水流量减小， 热水入水流量增大， 混合水出水温度升高； 当所述 喷嘴 9移向所述喉管 11一端端时， 冷水入水流量增大， 热水入水流量减少， 混合水出水温度降低。
因此， 本实施例提供的可调射流阀在实际使用过程中， 只需轴向调节所 述喷嘴 9移动即可实现对所述冷水入流空间 15、 热水口 12a和冷水喷射出口 16 的调节， 克服了现有技术中可调射流阀为了达到较适宜的混合水温度， 必 须同时对喷针和喷嘴进行调节， 使用难度较大且容易出错的技术问题。
此外， 在本实施例中， 如图 2所示， 所述喷嘴 9在所述射流阀芯的轴线 方向上调节位置时， 其上的所述喷嘴冷水进口 91处的冷水压力始终与所述阀 芯壳体 12上的所述冷水口 12b处的冷水压力保持一致。 该目的可通过以下两 种方式来实现：
方式一： 所述喷嘴冷水进口 91沿着喷针轴向方向的开口长度大于或等于 冷水口 12b的轴向开口长度与喷嘴 9的移动行程之和， 使得喷嘴 9在调节位 置时， 冷水口 12b始终处于喷嘴冷水进口 91的开口长度范围内， 从而能够始 终保持喷嘴内部的冷水喷射压力。
方式二： 所述冷水口 12b 沿着喷针轴向方向的开口长度大于或等于所述 喷嘴冷水进口 91沿着喷针轴向方向的开口长度与喷嘴 9的移动行程之和， 同 样能够使喷嘴 9在调节位置时， 喷嘴冷水进口 91始终处于冷水口 12b的开口 长度范围内， 从而能够始终保持喷嘴内部的冷水喷射压力。
以上两种设置方式保证了所述冷水口 12b的压力与所述冷水喷射出口 16 的压力相等， 防止了如现有技术中的所述喷嘴 9在轴向移动过程中出现所述 喷嘴的冷水入口压力小于所述冷水喷射出口 16压力的情况发生， 而现有技术 中发生所述喷嘴的冷水入口压力小于所述冷水喷射出口 16压力的情况的情况 时， 由于其自身结构的限制， 只能通过再次调节所述喷针轴向位移的方式使 得所述冷水喷射出口 16压力大于或者等于所述喷嘴 9的冷水入口压力， 以使 所述冷水射流正常喷射。
为了便捷地调节所述喷嘴 9沿所述阀体 12的轴线方向上位置， 进一步， 本发明实施方式的所述射流阀芯还包括用于辅助喷嘴 9调节其轴向位置的转 动件 1 3 , 所述转动件 1 3通过 0型圈等密封件密封可转动地设置在所述阀体 12上， 并通过轴向移动调节结构 (以下详细说明 )与所述喷嘴 9相对轴向移 动配合， 以将所述转动件 1 3的旋转运动转变为所述喷嘴 9的轴向移动。
具体地， 例如， 所述轴向移动调节结构可以为相互传动配合的齿条和齿 轮， 即喷嘴 9上设置有所述齿条， 转动件 1 3与齿轮联动以带动喷嘴 9轴向移 动。
在一种优选的实施方式中， 如图 1和 2所示， 所述转动件 1 3与所述喷针 连接以带动所述喷针同时转动， 具体地， 为了加工方便， 转动件 1 3与喷针连 接的端部形成有内螺纹孔， 而喷针的端部形成有外螺纹部， 两者可通过螺纹 配合连接； 当然， 转动件 1 3与喷针也可以一体成型；
同时， 所述阀体 12通过限制转动部 (以下详细说明）与所述喷嘴 9配合， 以在所述转动件 1 3带动所述喷针转动时， 所述喷嘴 9相对于所述阀体 12不 转动， 但其在所述轴向移动调节结构的作用下， 能够相对于所述阀体 12沿着 所述喷针的轴向方向移动。 转动件 1 3相配合的端部上的内螺纹以及形成在所述转动件 1 3上并与所述内 螺纹配合的外螺纹， 其中， 所述内螺纹与所述外螺纹的螺纹配合行程大于或 等于所述喷嘴的可移动行程， 即喷嘴 9处于图 2所示的冷水流通关闭位置时， 喷嘴冷水出口 92到阀门喉管 11的距离， 这样， 如图 1和 1所示， 通过旋转 转动件 1 3带动喷针在喷嘴 9内腔中转动， 而所述限制转动结构将阻挡喷嘴 9 相对于阀体 12转动， 同时， 由于喷嘴 9和转动件 1 3之间为螺纹配合， 这将 使得喷嘴 9 的螺纹配合的作用下沿着喷针的轴向方向往复移动， 从而实现对 所述冷水入流空间 15、 热水口 12a (图 2显示）和冷水喷射出口 16的流体流 量的同时调节， 使用便捷。
另外， 在转动件 1 3带动喷针一起转动的结构中， 所述轴向移动调节结构 也可以为其他结构， 例如斜齿轮和齿条的配合结构， 可将斜齿轮的转动运动 转变为齿条的移动， 即在喷嘴 9上设置有齿条， 而在转动件 1 3上设置有斜齿 轮， 从而将通过旋转转动件 1 3带动喷嘴 9沿着喷针的轴向移动。
为了实现所述转动件 1 3带动所述喷针一同转动时， 所述喷嘴 9不转动但 是可以在所述轴向移动调节结构 7的作用下， 相对于所述阀体 12沿所述喷针 的轴向方向移动的技术效果， 本实施例中设置限制转动结构， 所述阀体 12通 过限制转动结构与所述喷嘴配合， 以在所述转动件带动所述喷针转动时， 所 述喷嘴相对于所述阀体不转动， 但其在所述轴向移动调节结构的作用下， 能 够相对于所述阀体沿着所述喷针的轴向方向移动。 作为本实施方式的优选实 施例， 如图 4 所示， 所述限制转动结构为成形在所述喷嘴上的多边形端面， 相应的， 所述阀体的内壁形状成型为与所述多边形端面相配合的结构， 这样 所述转动件 1 3的外螺纹与所述喷嘴 9上的内螺纹配合作用时， 所述喷嘴 9由 于所述限制转动结构的限制， 不能转动， 但是会沿着所述喷针的轴线方向移 动。
作为上述实施方式的一种替换形式， 所述限制转动结构还可以为在所述 阀体的内壁上设置的凸缘以及在所述喷嘴的侧壁上沿着轴向方向设置并与所 述凸缘滑动配合的导向槽。 当然该种结构并不是该替换形式唯一的实现形式， 所述限制结构也可以为成型在所述阀体内壁上的导向槽以及成型在所述喷嘴 9的侧壁、 沿着轴向方向设置并与所述凸缘滑动配合的导向槽。 为了实现喷嘴冷水进口 91 以及与所述喷嘴冷水进口 91连通的所述阀体 12上的冷水口 12b两者与所述热水口 12a隔离开， 以使本发明的可调射流阀 能够达到好的射流效果， 在本实施例中， 如图 3、 图 4所示， 在所述喷嘴的喷 嘴冷水进口和喷嘴冷水出口之间成型有一对径向向外延伸的周向凸缘， 所述 喷嘴位于所述周向凸缘和所述喷嘴冷水出口之间的热水段可与阀门的热水通 道相连通。 为了达到较好的密封作用使得所述冷水口 12b 与所述热水口 12a 完全隔开， 在装配过程中， 使得所述周向凸缘的外表面与所述喷嘴 9 的内表 面紧紧贴合， 在一对所述周向凸缘 94之间装配密封件， 如密封圈， 进一步提 高了密封效果。
在本实施例中， 如图 1、 图 2所示， 所述喉管 11装配在所述阀体 12中， 所述阀体上成形有与热水通道以及所述喉管相通的热水口， 所述喉管 11的作 用主要是用于冷热水充分混合以及能量交换， 所述喉管 11具有通径管段 11a 和扩张管段 l ib。在本实施例中， 所述通径管段 11a的内孔直径为 5mm-14mm, 优选为 6匪 -10匪， 但是此范围并非本发明所限定的保护范围， 根据不同的工 作需要， 所述通径管段 11a 的内孔直径可以选择更大的范围， 在本实施例中 选为 8匪。 所述通径管段的长度为其内孔直径的 5-8倍， 优选为 6倍。
在本实施例中， 如图 7所示， 所述扩张管段 l ib的作用是把喉管 11出口 处的混合水的一部分动能变为压能， 所述能量转化的过程中， 存在扩散损失， 而扩散损失的多少与扩张管段 l ib入口流速的分布、 扩张角大小以及扩散断 面直径比有关， 作为本实施方式的优选实施例， 所述扩张角选择范围 a 为 5 。 -15° , 但不限于 5° -15° , 优选为 12° 。 在本实施例中， 所述扩张管段 l ib优选为线性连续扩张， 但是也可以为阶梯形连续扩张， 其扩张的具体形式 不作限制。 进一步地， 在本实施例中， 所述扩张管段 l ib为由其小口端至大 口端逐步扩张。 所述扩张管段 l ib优选为三段式扩张， 如图 8所示， 其中扩 张角优选为 β =2。 、 4。 、 13° , 所述扩张角 β还可以选择 、 3° 、 12° , 当然根据工作不同的需要也可以釆用其他的多个角度配合使用。
在本实施例中， 如图 3 所示， 所述喷嘴 9 的喷嘴冷水出口的直径为 3匪 -10mm, 优选为 4mm-6mm, 但本发明的保护范围不限于此范围， 在本实施例 中选为 5mm。 为了实现在通过所述喷嘴冷水进口 91的流体压力较大甚至艮大并且流速 不稳定的情况下， 本发明中的所述喷针能够不受流体压力的影响， 实现好的 喷射效果， 在本实施例中， 如图 1、 图 2和图 5所示， 所述喷针包括喷针主体 1 和设置在所述喷针主体 1 端部并与所述喷嘴的喷嘴冷水出口相配合的雉形 部， 所述喷针主体 1 周向设置有支撑体， 以在所述喷针装配在喷嘴中时， 所 述支撑体的外表面与所述喷嘴的内腔配合以对所述喷针主体 1 限位， 在所述 支撑体之间形成流体通道。 这样结构的喷针在实际使用中， 通过喷嘴 9 的流体的压力即使较大或很 大并且流速不稳定， 即沿着喷针的长度方向， 喷针的不同部位承受的径向压 力即使相差很大， 也能够在不影响流体顺畅流动的前提下， 有效地防止喷针 由于其径向方向上承受艮大并不均匀的径向压力而与喷嘴 9 的喷口偏离或者 发生径向抖动或摆动， 避免影响到喷嘴 9的喷嘴口 10的喷射效果。
根据上述所描述的支撑体的作用和功能， 在实际结构中， 该支撑体可以 具有多种不同的结构形式， 以下将结合附图详细说明所述支撑体的几种结构， 但需要理解的是， 所述支撑体并不限于以下所描述的结构， 本领域技术人员 可对其作出各种变形、 替换或者修改。
所述支撑体的第一种结构：
在该结构中， 如图 1所示， 所述支撑体包括围绕所述喷针主体 11的外表 面沿着周向方向均布并沿喷针的轴向方向延伸设置的多个凸肋 4 , 多个凸肋 4 相互之间形成所述流体通道 3。 这样， 当喷针与喷嘴装配后， 凸肋 4可与喷嘴 的内腔接触配合， 以对喷针主体 1进行限位。
在实际加工中， 凸肋 4 可通过机械加工方式例如切削方式来形成， 也可 以通过铸造或注塑等方式与喷针主体 11一次性成型， 可根据实际来选用适当 的成型方法。
进一步， 为了增强喷嘴的喷射效果， 所述凸肋 4包括第一凸肋部 41和第 二凸肋部 42 , 其中， 所述第一凸肋部 41与喷嘴 9的喷嘴冷水进口 91相对， 并且其径向尺寸小于所述第二凸肋部 42的径向尺寸， 以与喷嘴 9的内腔壁形 成所述流体通道， 所述第二凸肋部 42的外表面与所述喷嘴 9的内腔配合。 从 而通过凸肋 4 结构上的改进， 可以在保证支撑体对喷针限位的同时， 能够提 高喷嘴 9的喷射效果。
此时， 喷针在支撑体的限位作用下， 既可以沿着喷嘴的轴向方向往复移 动， 也可以在喷嘴中转动。
当然， 在实际使用中， 喷嘴 9的内腔壁上可成形有与第二凸肋部 42相对 应的开槽， 该开槽沿着喷嘴 9的轴向方向延伸， 第二凸肋部 42可配合在所述 开槽中并沿着所述喷嘴的轴向方向滑动。 在这种结构中， 所述开槽对喷针同 时具有导向作用和防旋转作用， 即喷针只能沿着喷嘴的轴向方向往复移动， 而不能在喷嘴中转动。
为了制造方便， 优选地， 凸肋 4 的数量为三个、 四个、 五个、 六个， 其 中， 四个凸肋 4为优选方案， 在此， 对凸肋 4的数量不作具体限制， 只要能 实现本发明的技术效果即可；所述多个凸肋 4相互之间形成的所述流体通道 3 的过水截面大于所述喷嘴 9的所述喷嘴冷水出口 92的截面， 该种设置方式保 证所述喷嘴冷水出口 92处的水压较大， 进一步保证所述冷水喷射出口 16好 的喷射效果。
所述支撑体的第二种结构：
在该结构中， 如图 4所示， 所述支撑体为设置在所述喷针主体 11上的环 形支撑板 5 ,该环形支撑板 5的板面上成型有多个用作所述流体通道的导流孔 6。
环形支撑板 5可根据实际需要具有适当的厚度， 另外， 导流孔 6的形状 并不限于图 4所示的圓孔形状， 也可以为扇形孔， 同时， 导流孔 6应当设置 为对通过其的流体的流速不产生影响或者产生轻微的影响， 例如， 导流孔 6 与环形支撑板 5板面的相接处形成有利于流体流动的圓弧。 所述支撑体的第三种结构：
在该结构中， 如图 3所示， 所述支撑体为圓环 7，该圓环 7通过多个肋条 8与所述喷针主体 1 1连接， 所述肋条 8相互之间形成所述流体通道 3。
圓环 7以及肋条 8的形状设置为利于流体的顺畅流动， 以对流体流动产 生轻微影响或者不产生影响。
以上仅是描述了支撑体的三种结构形式， 但其并不限于此。
此外， 如图 1、 图 2所示， 所述喷针主体 1 1的所述支撑体和所述雉形部 2之间具有增压混水段 1 a , 该增压混水段 1 a的形状为圓柱形状， 以在该喷针 与喷嘴装配后， 具体如图 2所示， 喷针的增压混水段 l a可与喷嘴的内腔壁之 间形成一冷水入流空间 15 , 可以保证通过流体通道引入的流体在进入雉形部 2与喷嘴口 10形成的喷射雉面前混合均勾并实现增压效果， 并能够实现增压 效果， 从而保证喷嘴 9的喷嘴口 1 0最终良好的喷射效果。 在本实施例中， 所 述增压混水段 la选为 7mm。
如图 2所示， 当喷针沿着喷嘴 9的轴向方向朝向喷嘴口 10移动时， 喷针 的雉形部 2将逐渐与喷嘴口 10配合， 因此， 为了防止当雉形部 2与喷嘴口 10 完全配合后， 还有冷水从喷嘴口 10喷出， 优选地， 所述增压混水段 la的直 径大于、 等于或者略小于所述喷嘴的喷嘴口 10的直径； 此处， 对于 "大于或 等于" 和 "略小于" 进行解释： 所述喷针的雉形部的根部的直径大于所述喷 嘴 9的所述喷嘴冷水出口 92的直径时， 所述喷嘴 9沿轴向方向移动， 当所述 热水口 12a开口最大， 所述冷水喷射出口 16封闭时， 所述喷嘴 9的所述喷嘴 冷水出口 92的出口边缘与所述喷针的雉形部的边缘相接触， 封闭所述冷水喷 射出口 16 ; 所述喷针的雉形部的根部的直径略小于所述喷嘴 9的所述喷嘴冷 水出口 92的直径时， 所述喷嘴 9沿轴向方向移动， 当所述热水口 12a开口最 大时， 所述喷针的雉形部穿过所述喷嘴 9的所述喷嘴冷水出口 92 , 对大部分 的所述冷水喷射出口 16进行封闭，所述喷针的雉形部与所述喷嘴冷水出口 92 之间会留有极小的间隙而使冷水从中流过， 而此时， 所述热水口 12a 完全打 开， 因此， 从中流过的冷水量可以忽略不计。。
在本实施例中， 所述增压混水段 la的长度不能太短， 否则将有可能造成 喷嘴出水分叉， 即增压混水段 la的长度与流体通道的截面、 喷嘴出口的截面 以及支撑体的厚度有关， 但是影响将不会很大。
另夕卜， 如图 5所示， 所述雉形部 2的直径从其^ ^艮部 2a到前端部 2b缩小， 其雉度为 20° -90° ，该雉度包括 20° 和 90° , 优选为 30° , 喷针与喷嘴 9 装配后， 所述雉形部 2的长度可小于或等于所述喷嘴 9的可移动行程， 这样， 可以实现喷嘴冷水出口 92与雉形部 1的适当配合。
相应地， 所述喷嘴的冷水喷射出口 16的雉度大于等于所述喷针的雉形部 2 的雉度。 以此， 在本实施例中， 所述喷嘴的雉形部的雉角可以在 30。 -100 。 范围变化， 在本实施例中选为 60° 。
此外， 所述雉形部 2的直径从其根部 2a到前端部 2b线性连续缩小， 即 雉形部 2为圓雉体结构。 为了流体流通的畅通， 如图 2所示， 雉形部 2与喷 嘴 9的喷嘴冷水出口 92可为线性配合。 当然， 雉形部 2也可以为符合流体力 学的非线性或者为物体抛物线面形式， 以根据流体不同的流速而自动地做出 一些适当性调整。 本发明的可调射流阀， 其各个部件的参数选择对于可调射流阀的冷水射 流抽吸热水的效果具有重要的影响， 试验证明， 本实施例的可调射流阀的总 体结构结合具体参数使其在冷水量较小时仍具有非常好的负压吸附效果， 详 细测试效果见表 1的数据； 表 2则显示， 调温到中间状态时， 本实施例中可 调射流阀的总体结构结合具体参数在使用时也具有非常好的负压吸附效果。
表 1
测试条件 调温到冷水最小
冷水进口压力 （Mpa) 热水抽吸负压（米水柱）
0. 05 -0. 29
0. 1 -0. 48
0. 15 -0. 8
0. 2 -1 表 2
Figure imgf000019_0001
显然， 上述实施例仅仅是为清楚地说明所作的举例， 而并非对实施方式 的限定。对于所属领域的普通技术人员来说， 在上述说明的基础上还可以做 出其它不同形式的变化或变动。 这里无需也无法对所有的实施方式予以穷 举。而由此所引伸出的显而易见的变化或变动仍处于本发明创造的保护范围 之中。

Claims

权 利 要 求 书
1. 一种可调射流阀，包括
阀体（ 12 ), 所述阀体（ 12 )上设有冷水口 （ 12b )、 热水口 （ 12a )和用 于混合水输出的混水口 （12c );
喷嘴（9 )，设置在所述阀体（U ) 内， 具有通过所述冷水口 （Ub)可与 阀门的冷水通道相连通的喷嘴冷水进口 （91 ) 以及喷嘴冷水出口 （92 );
喷针， 可装配在所述喷嘴（9 ) 内部， 与所述喷嘴（9 ) 的内腔形成冷水 入流空间 （15 ), 与所述喷嘴冷水出口 （92 )形成冷水喷射出口 （16 );
喉管 （11 ), 连接于所述阀体（12 ) 的所述混水口 （12c )处， 用于将混 合水导出；
其特征在于： 所述喷针在所述可调射流阀的轴线方向上的位置固定不动， 所述喷嘴（9 )在所述可调射流阀的轴线方向上的位置可调， 通过轴向调节所 述喷嘴（ 9 ) 可以同时实现对所述冷水入流空间 （ 15 )、 热水口 （ 12a )和冷水 喷射出口 （16 ) 的调节。
2. 根据权利要求 1所述的可调射流阀， 其特征在于：还包括转动件（ 13 ), 所述转动件（ 13 ) 密封可转动地设置在所述阀体（ 12 ) 中， 并通过轴向移动 调节结构 （7 ) 与所述喷嘴（9 )相对轴向移动配合， 以使所述转动件 （13 ) 的旋转运动转变为所述喷嘴（9 ) 沿所述喷针的轴向方向的移动。
3.根据权利要求 1 所述的可调射流阀， 其特征在于： 所述转动件（13 ) 与所述喷针连接以带动所述喷针同时转动；
所述阀体 ( 12 )通过限制转动结构与所述喷嘴 ( 9 )配合， 以在所述转动 件（ 13 )带动所述喷针转动时， 所述喷嘴 ( 9 )相对于所述阀体 ( 12 )不转动。
4. 根据权利要求 3所述的可调射流阀， 其特征在于： 所述轴向移动调节 结构 （7 ) 包括成型在所述喷嘴（9 )上的内螺纹以及成型在所述转动件（13 ) 上并与所述内螺纹配合的外螺纹， 所述内螺纹与所述外螺纹的螺纹配合行程 不小于所述喷嘴的工作行程。
5. 根据权利要求 3所述的可调射流阀， 其特征在于： 所述限制转动结构 为成形在所述喷嘴（9 )上的多边形端面 （93), 所述阀体（U ) 的内壁形状 与所述多边形端面 （93)相配合。
6. 根据权利要求 3所述的可调射流阀， 其特征在于： 所述限制转动结构 为在所述喷嘴（9 ) 的外壁周向设置的凸缘和 /或导向槽以及与之配合的所述 阀体（12 ) 内壁上沿着轴向方向设置的导向槽和 /或凸缘。
7. 根据权利要求 6 所述的可调射流阀， 其特征在于： 所述喷嘴（9) 的 喷嘴冷水进口 （91 )和喷嘴冷水出口 （ 92 )之间成形一对径向向外延伸的周 向凸缘（94 ), 所述周向凸缘（94 )之间可装配有密封件， 所述喷嘴（9 )位 于所述周向凸缘（ 94 )和所述喷嘴冷水出口 （ 92 )之间的热水段（ 95 )可与 阀门的热水通道相连通。
8. 根据权利要求 1所述的可调射流阀， 其特征在于： 所述喉管 （11 )装 配在所述阀体（12 ) 中， 所述阀体（12 )上成形有与热水通道以及所述喉管
( 11 )相通的热水口 ( Ua ), 所述喉管 ( 11 )具有通径管段 ( 11a )和扩张管 段（llb)。
9.根据权利要求 8所述的可调射流阀，其特征在于： 所述通径管段（ 11a ) 的内孔直径为 5mm-14mm,所述通径管段（ 11a )的长度为其内孔直径的 5-8倍。
10. 根据权利要求 8或 9所述的可调射流阀， 其特征在于： 所述扩张管 段（lib) 的扩张角度（ β )为 5。 -15。 。
11.根据权利要求 10所述的可调射流阀 ,其特征在于：所述扩张管段（ lib ) 为由其小口端至大口端逐步扩张。
12.根据权利要求 11所述的可调射流阀 ,其特征在于：所述扩张管段（ lib ) 为三段式扩张。
13. 根据权利要求 1-12中任一项所述的射流阀， 其特征在于， 所述喷嘴 ( 9 ) 的喷嘴冷水出口 （92 ) 的直径为 3mm-10mm。
14. 根据权利要求 1-13中任一项所述的可调射流阀， 其特征在于： 所述 喷针包括喷针主体（ 1 )和设置在所述喷针主体（ 1 )端部并与所述喷嘴（ 9 ) 的喷嘴冷水出口 （ 92 )相配合的雉形部 （ 1 ), 所述喷针主体（ 1 )周向设置有 支撑体， 以在所述喷针装配在喷嘴（9 ) 中时， 所述支撑体的外表面与所述喷 嘴的内腔配合以对所述喷针主体（1 )限位， 在所述支撑体之间形成流体通道
( 3)。
15. 根据权利要求 14所述的可调射流阀， 其特征在于： 所述支撑体包括 围绕所述喷针主体（1 )周向均布并沿其轴向方向延伸设置的多个凸肋（4 ), 所述多个凸肋 ( 4 )相互之间形成所述流体通道 ( 3 )。
16. 根据权利要求 15 所述的可调射流阀， 其特征在于： 所述凸肋（4 ) 包括第一凸肋部（41 )和第二凸肋部（42), 所述第一凸肋部（41 )与喷嘴的 喷嘴冷水进口 （91 )相对， 并且其径向尺寸小于所述第二凸肋部 （42 ) 的径 向尺寸， 以与喷嘴的内腔壁形成所述流体通道（3 ), 所述第二凸肋部 （42 ) 的外表面与所述喷嘴的内腔配合。
17. 根据权利要求 12-16 中任一项所述的可调射流阀， 其特征在于： 所 述凸肋（4 )为三个或四个或五个或六个；
所述多个凸肋 （4 )相互之间形成的所述流体通道（3 ) 的过水截面大于 所述喷嘴（9 ) 的所述喷嘴冷水出口 （92 ) 的截面。
18. 根据权利要求 14所述的可调射流阀，其特征在于：所述喷针主体（ 1 ) 的所述支撑体和所述雉形部 （2 )之间具有增压混水段（la ), 该增压混水段
( la ) 的形状为圓柱形状。
19. 根据权利要求 18所述的可调射流阀， 其特征在于： 所述增压混水段 ( la ) 的直径大于、 等于或者略小于所述喷嘴的喷嘴口 （10) 的直径。
20. 根据权利要求 19所述的可调射流阀， 其特征在于： 所述雉形部 （2) 的直径从其根部 a)到前端部 （2b)缩小， 其雉度为 10° -150° , 所述雉 形部 （2) 的长度小于或等于所述喷嘴的可移动行程。
21.根据权利要求 1或 2所述的可调射流阀， 其特征在于： 所述喷嘴 ( 9 ) 在所述可调射流阀的轴线方向上调节位置时， 其上的所述喷嘴冷水进口 （91 ) 处的冷水压力始终与所述阀芯壳体（12 )上的所述冷水口 （12b)处的冷水压 力保持一致。
PCT/CN2013/084286 2013-04-27 2013-09-26 可调射流阀 WO2014173074A1 (zh)

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