CN213332532U - Four-way reversing valve - Google Patents

Abstract

The utility model discloses a four-way reversing valve, which comprises a valve body, a motor, a waterproof motor frame, a protective shell, a motor gear transmission mechanism, a magnetic coupling rotating device, a planetary reduction gear, a reversing valve disc device and a reversing action feedback device, wherein the motor is arranged in a motor box on the waterproof motor frame; the motor drives the magnetic coupling rotating device through the motor gear transmission mechanism, and an inner driving disc in the magnetic coupling rotating device drives the planetary speed reducing mechanism so as to drive the reversing valve disc device; the reversing action feedback device is characterized in that a Hall sensor acquires a position signal of the reversing valve disc device through magnetic induction intensity. The four-way reversing valve provided by the invention is not only electrically safe, but also safe in equipment, and even reduces the cost and saves resources.

Description

Four-way reversing valve

Technical Field

The utility model relates to a four-way reversing valve.

Background

At present, a four-way reversing valve adopted at home and abroad generally adopts an electromagnetic reversing structure, namely when the four-way reversing valve is not electrified, a piston does not move under the action of a spring, and the piston and a sliding block are in original positions; when the power is on, the piston overcomes the elastic force of the spring under the action of electromagnetic induction, and the piston and the slide block move towards the other direction. However, the four-way reversing valve with the structure is not well designed and provided with the reversing action feedback device, if the four-way reversing valve is not provided with the action reversing feedback device, the four-way reversing valve cannot be conveniently controlled automatically, and whether the four-way reversing valve works normally or not cannot be judged, so that hidden dangers are brought to the safety of equipment such as an air conditioner.

Secondly, the waterproof structure of the electromagnetic coil is not completely sealed, and particularly when the electromagnetic coil is installed on refrigeration equipment such as an air conditioner and the like, moisture can exist in the electromagnetic coil in a humid environment for a long time, and particularly on an exposed lead, the electromagnetic coil can cause a short circuit phenomenon, so that the electrical safety problem is formed. In addition, the electromagnetic coil has high manufacturing cost and is not beneficial to saving resources.

SUMMERY OF THE UTILITY MODEL

The utility model aims to reach provides a four-way reversing valve.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a four-way reversing valve, includes valve body, motor, waterproof motor frame, protecting crust, motor gear drive, magnetic coupling rotary device, planetary reduction mechanism, switching-over valve disk device and switching-over action feedback device, its characterized in that: the motor is arranged in a motor box on a waterproof motor frame, the waterproof motor frame is sleeved on the valve body, and the protective shell is arranged on the waterproof motor frame;

the magnetic coupling rotating device comprises an inner driving disk, an outer driving disk, inner magnetic steel and outer magnetic steel; the inner magnetic steel is embedded in a first clamping groove on the inner driving disc, and the outer magnetic steel is embedded in a second clamping groove on the outer driving disc; the inner driving disc is coaxial with the outer driving disc, and the positions of the inner magnetic steel and the outer magnetic steel are consistent in height;

the motor drives the outer driving disk through the motor gear transmission mechanism, and the inner driving disk rotates along with the outer driving disk through the magnetic coupling relation between the inner magnetic steel and the outer magnetic steel; the inner driving disc drives the reversing valve disc device to rotate through the planetary speed reducing mechanism;

the reversing action feedback device comprises a Hall sensor and a magnet, the magnet is embedded in the reversing valve disc device, and the Hall sensor acquires a position signal of the reversing valve disc device through magnetic induction intensity.

As a pair of the utility model provides a preferred embodiment of four-way reversing valve, switching-over action feedback device still includes the mount, hall sensor installs on the mount, the disk seat at the valve body is fixed to the mount, hall sensor's magnetic induction district's position height with the produced magnetic field position highly uniform of magnet, just the one side of the produced magnetic induction intensity of hall sensor circular telegram with the valve body outer wall is tangent, magnet is fixed in the magnetic channel on the initiative rotary valve dish on the reversing valve dish device.

As a preferred embodiment of the four-way reversing valve provided by the present invention, the number of the magnets is 1 or 2, and the number of the hall sensors is 1 or 2; if only one magnet and one Hall sensor are arranged, the Hall sensor is arranged at the position corresponding to the D tube, or the C tube, or the E tube; if only one magnet and two Hall sensors are arranged, the two Hall sensors are arranged at the positions corresponding to the C tube and the E tube, or at the positions corresponding to the D tube and the C tube; if two magnets and one Hall sensor are arranged, the Hall sensor is arranged at the position corresponding to the D tube, or the C tube, or the E tube; if two magnets and two Hall sensors are arranged, the two Hall sensors are arranged at the positions corresponding to the C tube and the E tube.

As a preferred embodiment of the four-way reversing valve provided by the utility model, the waterproof motor frame comprises the motor box, a fixed sleeve frame, an external driving disk supporting platform and a gear groove which are matched with the motor shell; the gear groove is formed above the motor box, the fixed sleeve frame is fixed on the outer wall of the valve body, the external driving disk supporting platform matched with the external driving disk is formed above the fixed sleeve frame, and the external driving disk supporting platform and the fixed sleeve frame are connected with the gear groove.

As a preferred embodiment of the four-way reversing valve provided by the present invention, the motor gear transmission mechanism includes a primary gear and a duplicate gear that are matched with the motor output shaft, the duplicate gear includes a pinion and a gearwheel, the gearwheel is matched with the primary gear, and the pinion is matched with the external driving disc; the primary gear and the duplicate gear are arranged in a gear groove on the waterproof motor frame.

As a preferred embodiment of a pair of four-way reversing valve, the reversing valve disc device is including initiative rotary valve disc and slave rotary valve disc, the embedding of slave rotary valve disc initiative rotary valve disc, slave rotary valve disc follows initiative rotary valve disc is rotatory in turn.

As a pair of the utility model provides a preferred embodiment of four-way reversing valve, driven rotary valve disc is equipped with the first locating hole that matches with four-way reversing valve's center pin, the outside location cylinder that forms in first locating hole, the side of location cylinder forms a sealed inside groove, form below the sealed inside groove and contact and anastomotic seal face with the disk seat up end.

As a preferred embodiment of the four-way reversing valve provided in the present invention, the active rotary valve disc is provided with a first slot and a second slot, and the first slot and the second slot are opposite; a second positioning hole matched with the central shaft is formed in the right center of the driving rotary valve disc, a positioning cylindrical groove is formed below the second positioning hole, and the side face of the positioning cylindrical groove is separated from the first open groove and communicated with the second open groove; and gear positioning columns matched with the planetary gears are formed on the upper end surfaces of the first open groove and the second open groove.

As a preferred embodiment of the four-way reversing valve provided by the utility model, two sides of the first open groove are provided with a first limit groove and a second limit groove which are matched with the D pipe, and the first limit groove and the second limit groove form an angle of 90 degrees; one or two magnetic grooves matched with the magnets are arranged on the outer wall of the first open groove, and if only one magnetic groove is arranged, the center position of the magnetic groove, the center of the first limit groove or the second limit groove and the circle center are on the same straight line; if two magnetic grooves are arranged, the angle between the two magnetic grooves is 90 degrees, and the central position of the magnetic groove, the center of the first limiting groove and the circle center are on the same straight line; and the center position of the other magnetic slot, the center of the second limit slot and the circle center are on the same straight line.

As a preferred embodiment of the four-way reversing valve provided by the present invention, the magnetic coupling rotation device includes an inner driving disk, an outer driving disk, an inner magnetic steel and an outer magnetic steel; the inner magnetic steel is embedded in a first clamping groove on the inner driving disc, and the outer magnetic steel is embedded in a second clamping groove on the outer driving disc; the inner driving disc is provided with a primary sun gear, the primary sun gear is embedded into the planetary reduction mechanism, the planetary reduction mechanism is fixed on the inner wall of the valve body through an inner gear ring, and the inner gear ring is positioned between the inner driving disc and the reversing valve disc device.

Compared with the prior art, the utility model discloses following profitable effect has:

in the utility model, the motor is arranged in a motor box on the waterproof motor frame, and a sealing ring is embedded on the motor output shaft sleeve; an output shaft on the motor penetrates through the sealing ring, an inner hole of the sealing ring is slightly tightly matched with the output shaft on the motor, and the output shaft on the motor can rotate in the sealing ring; secondly, connecting two wires with a connecting terminal on the motor; and finally, sealing the inlet in the motor box in a glue pouring mode. According to the motor mounting mode, moisture in the air is isolated, on one hand, the motor is protected, and on the other hand, reliable guarantee is improved for electrical safety.

The utility model discloses in, utilize among the hall sensor circular telegram process, produced magnetic induction intensity is through installing on the initiative rotary valve dish magnet acquires the position signal of initiative rotary valve dish. If the position signal is obtained, the Hall sensor outputs the signal to the controller, and the controller processes the signal. If not, the Hall sensor does not output a signal to the controller. Therefore, the reversing action feedback device can judge whether the four-way reversing valve is finished or not, can also judge whether the four-way reversing valve is good or not, and even can provide safety guarantee for equipment such as an air conditioner and the like.

Drawings

The utility model is further explained with the attached drawings:

FIG. 1 is a schematic view of the external structure of the four-way reversing valve of the present invention;

FIG. 2 is a cross-sectional view of the internal structure of the four-way reversing valve of the present invention;

FIG. 3 is a top view of the external structure of the four-way reversing valve of the present invention;

FIG. 4 is a schematic view of the structure of the valve seat of the present invention;

FIG. 5 is a schematic view of the combined structure of the external driving disk and the external magnetic steel of the present invention;

FIG. 6 is a schematic view of the combined structure of the inner driving disk and the inner magnetic steel of the present invention;

FIG. 7 is a schematic view of the structure of the planet in the present invention;

FIG. 8 is an exploded view of the planetary structure of the present invention;

FIG. 9 is a schematic view illustrating a structure of a driving rotary valve disc according to the present invention;

FIG. 10 is a schematic diagram of a structure of a driving rotary valve disc according to the present invention;

FIG. 11 is a schematic view of the structure of a driven rotary valve disc according to the present invention;

FIG. 12 is a schematic structural view A of the waterproof motor frame of the present invention;

FIG. 13 is a sectional view A-A of the waterproof motor frame of the present invention;

fig. 14 is a schematic structural view of a double gear of the present invention;

in the figure, 1-valve seat, 101-D hole, 102-S hole, 103-C hole, 104-E hole, 105-blind hole, 106-valve seat step and 107-valve seat upper end surface; 2-sleeve pipe, 3-D pipe, 4-C pipe, 5-S pipe, 6-E pipe, 7-waterproof motor frame, 701-motor box, 702-gear groove, 703-external driving disk supporting platform, 704-fixed sleeve frame, 705-motor positioning step, 706-shaft hole, 707-mounting hole, 708-protective shell positioning piece, 709-gear step and 7091-duplex gear shaft hole; 8-protective shell, 9-motor, 10-fixed frame, 11-Hall sensor, 12-external drive disk, 1201-trepanning, 1202-second clamping groove, 1203-external drive disk gear, 13-external magnetic steel, 14-internal magnetic steel, 15-internal drive disk, 1501-primary shaft hole, 1502-first clamping groove, 1503-primary sun gear, 16-central shaft, 17-cap nut, 18-planetary reduction mechanism, 1801-internal gear ring, 1802-planetary wheel disc, 18021-gear cylinder, 18022-secondary sun gear and 1803-planetary gear; 19-driving rotary valve disc, 1901-second positioning hole, 1902-gear positioning column, 1903-large exhaust hole, 1904-magnetic groove, 1905-positioning cylindrical groove, 1906-second grooving, 1907-first grooving, 19071-first spacing groove, 19072-second spacing groove, 1908-small exhaust hole, 20-driven rotary valve disc, 2001-first positioning hole, 2002-positioning cylinder, 2003-sealing internal groove, 2004-sealing end face, 21-sealing ring, 22-primary gear, 23-duplicate gear, 2301-pinion, 2302-big gear, 2303-first shaft hole, 2304-second shaft hole, 24-screw, 25-gear round bar and 26-magnet.

Detailed Description

The technical solution of the present invention is further described in detail by the following embodiments.

Referring to fig. 1, 2 and 3, a four-way reversing valve comprises a valve body, a motor 9, a waterproof motor frame 7, a protective shell 8, a motor gear transmission mechanism, a magnetic coupling rotation device, a planetary reduction mechanism, a reversing valve disc device and a reversing action feedback device, wherein the motor 9 is arranged in a motor box 701 on the waterproof motor frame 7, the waterproof motor frame 7 is sleeved on the valve body, and the protective shell 8 is arranged on the waterproof motor frame 7;

the motor 9 drives the outer driving disk 12 through a motor gear transmission mechanism, and the inner driving disk 15 rotates along with the outer driving disk 12 through the magnetic coupling relation between the inner magnetic steel 14 and the outer magnetic steel 13 on the outer driving disk 12; the inner driving disk 15 drives the reversing valve disk device to rotate through the planetary speed reducing mechanism 18;

the reversing action feedback device comprises a Hall sensor 11 and a magnet 26, the magnet 26 is embedded in the reversing valve disc device, and the Hall sensor 11 acquires a position signal of the reversing valve disc device through magnetic induction intensity.

The valve body comprises a valve seat 1, a sleeve 2, a D pipe 3, an E pipe 6, an S pipe 5 and a C pipe 4, wherein the sleeve 2 is fixed on a valve seat step 106 on the valve seat 1 in a welding mode;

more specifically, referring to fig. 4, a D hole 101, an S hole 102, a C hole 103, and an E hole 104 are provided on the valve seat 1, the D hole 101 is opposite to the S hole 102, and the C hole 103 is opposite to the E hole 104; the D hole 101 is a through hole, and the S hole 102, the C hole 103, and the E hole 104 are stepped holes; the D hole 101 is embedded with a D tube 3, the upper end surface of the D tube 3 is higher than the upper end surface 107 of the valve seat, the upper end surface of the D tube 3 is arranged in the first notch 1907 of the driving rotary valve disc 19, and the upper end surface of the D tube 3 is separated from the top of the first notch 1907; the S hole 102, the C hole 103 and the E hole 104 are respectively embedded into the S pipe 5, the C pipe 4 and the E pipe 6; the dead center of the valve seat 1 is provided with a blind hole 105 matched with the central shaft 16, the central shaft 16 is connected with a hole at the dead center of the top of the sleeve 2 up and down through the blind hole 105, and the central shaft 16 is fixed with the sleeve 2 in a welding mode.

Further describing the magnetic coupling rotation device in detail with reference to fig. 5 and 6, the magnetic coupling rotation device includes an inner drive disk 15, an outer drive disk 12, an inner magnetic steel 14 and an outer magnetic steel 13; the inner magnetic steel 14 is embedded in a first clamping groove 1502 on the inner driving disk 15, and the outer magnetic steel 13 is embedded in a second clamping groove 1202 on the outer driving disk 12; the inner driving disk 15 is coaxial with the outer driving disk 12, and the positions of the inner magnetic steel 14 and the outer magnetic steel 13 are consistent in height; the inner drive disk 15 is mounted inside the spigot 2 via the primary axial aperture 1501 and, at the upper part of the spigot 2, the outer wall of the inner drive disk 15 is spaced from the inner wall of the spigot 2 by a distance of within 1 mm. The number of the first clamping grooves 1502 and the second clamping grooves 1202 is 2 or more than 2, and the number of the inner magnetic steel 14 and the number of the outer magnetic steel 13 are also 2 or more than 2.

The magnetic coupling relation between the internal magnet steel 14 and the external magnet steel 13 is further explained according to the magnetic coupling rotating device, namely the magnetic field generated by the internal magnet steel 14 is the same as the magnetic field generated by the external magnet steel 13, and the force generated by the internal magnet steel 14 and the external magnet steel 13 is repulsive force; or the magnetic field generated by the internal magnet steel 14 is different from the magnetic field generated by the external magnet steel 13, the forces generated by the two are attractive forces.

Further referring to fig. 7 and 8, the planetary reduction mechanism 18 is specifically described, the planetary reduction mechanism 18 is fixed on the inner wall of the casing 2 through an internal gear ring 1801, and the internal gear ring 1801 is located between the inner driving disk 15 and the reversing valve disk device. The planetary reduction mechanism 18 includes a sun gear, a planetary gear 1803, and a planetary disk 1802.

Wherein, the planetary gear 1803 and the planetary wheel disc 1802 are embedded in the inner gear ring 1801;

wherein the primary sun gear 1503 on the inner driving disk 15 serves as the input driving source of the planetary reduction mechanism 18, and the planetary gears 1803 are mounted on the gear cylinders 18021 on the planetary wheel disk 1802. The number of the planetary wheel discs is 1 or more than 1, secondary sun gears 18022 are further arranged on the planetary wheel discs 1802, active rotary valve discs 19 on the reversing valve disc device are used as final output power devices of the planetary speed reducing mechanism 18, gear positioning columns 1902 on the active rotary valve discs 19 are embedded into the planetary gears 1803, and the planetary gears 1803 on the active rotary valve discs 19 are embedded into the secondary sun gears 18022 on the planetary wheel discs 1802 and connected.

The diverter valve disc device will be further described in detail with reference to fig. 9, 10 and 11. The reversing valve disc device comprises a driving rotary valve disc 19 and a driven rotary valve disc 20, wherein the driven rotary valve disc 20 is embedded into the driving rotary valve disc 19, and the driven rotary valve disc 20 rotates along with the rotation of the driving rotary valve disc 19.

The driven rotary valve disc 20 is provided with a first positioning hole 2001 matched with the central shaft 16, a positioning cylinder 2002 is formed outside the first positioning hole 2001, a sealing inner groove 2003 is formed on the side surface of the positioning cylinder 2002, and a sealing end surface 2004 which is contacted with and matched with the valve seat upper end surface 107 is formed on the lower surface of the sealing inner groove 2003.

Preferably, the flatness of the seal end face 2004 is within 0-0.015 mm, the flatness of the valve seat upper end face 107 is within 0-0.015 mm, and the surface roughness: ra is more than or equal to 0 and less than or equal to 0.8 mu m.

Wherein the driving rotary valve disk 19 is provided with a first slot 1907 and a second slot 1906, the first slot 1907 and the second slot 1906 being opposite; a second positioning hole 1901 matched with the central shaft 16 is arranged in the right center of the driving rotary valve disc 19, a positioning cylindrical groove 1905 is formed below the second positioning hole 1901, and the side surface of the positioning cylindrical groove 1905 is separated from the first open groove 1907 and communicated with the second open groove 1906; gear positioning columns 1902 matched with the planetary gears 1803 are formed on the upper end surfaces of the first open slot 1907 and the second open slot 1906, small air exhaust holes 1908 communicated with the first open slot 1907 and the second open slot 1906 are formed in the gear positioning columns 1902, a large air exhaust hole 1903 communicated with the first open slot 1907 is formed above the first open slot 1907, and the number of the gear positioning columns 1902 is 3 or more than 3 and is uniformly distributed circumferentially.

A first limiting groove 19071 and a second limiting groove 19072 which are matched with the D tube 3 are arranged on two sides of the first open groove 1907, and a straight line formed by connecting the center of the first limiting groove 19071 and the circle center and a straight line formed by connecting the center of the second limiting groove 19072 and the circle center form an angle of 90 degrees; one or two magnetic grooves 1904 matched with the magnet 26 are arranged on the outer wall of the first open groove 1907, and if only one magnetic groove 1904 is provided, the center position of the magnetic groove 1904, the center of the first limit groove 19071 or the second limit groove 19072, and the center of the circle are on the same straight line; if two magnetic grooves 1904 are provided, the central positions of the two magnetic grooves 1904 form 90 °, and the central positions of the magnetic grooves 1904, the center of the first limiting groove 19071 and the center of the circle are on the same straight line; and the center position of the other magnetic slot 1904, the center of the second limit slot 19072 and the center of the circle are on the same straight line.

The waterproof motor rack 7 and the waterproof function of the waterproof motor rack 7 will be further described with reference to fig. 1, 3, 12, and 13.

The waterproof motor frame 7 comprises a motor box 701 matched with the shell of the motor 9, a fixed sleeve frame 704, an external driving disk supporting platform 703 and a gear groove 702;

a gear groove 702 is arranged above the motor box 701, a fixing sleeve frame 704 is fixed on the outer wall of the sleeve 2, an outer driving disk supporting platform 703 matched with the outer driving disk 12 is formed above the fixing sleeve frame 704, and the outer driving disk 12 is arranged above the outer driving disk supporting platform 703.

Wherein, the external driving disk supporting platform 703 and the fixed sleeve frame 704 are connected with the gear groove 702;

a motor positioning step 705 which is matched with the motor output shaft sleeve and the sealing ring 21 is formed right above the motor box 701, a shaft hole 706 which is matched with the motor output shaft is formed above the motor positioning step 705, and the shaft hole 706 is connected with the motor positioning step 705;

two mounting holes 707 matched with the motor threaded holes are formed above the motor box 7, the two mounting holes 707 are located at two sides of the shaft hole 706, and the central positions of the two mounting holes 706 and the shaft hole 707 are on the same central line; two mounting holes 707 and the shaft hole 706 are communicated with the gear groove 702; the bottom of gear groove 702 is equipped with a bellied gear step 709, and gear step 709 is cylindrical, and gear step 709 is inside to form a pair gear shaft hole 7091 that matches with gear pole 25, and gear pole 25 fixes in pair gear shaft hole 7091.

Wherein, the outside of the external driving disk supporting platform 703 forms a protecting shell positioning piece 708 matching with the protecting shell 8, and the protecting shell 8 is fixed on the waterproof motor frame 7 through the thread above the central shaft 16 and the cap nut 17.

According to the structure of the waterproof motor frame, the waterproof function of the waterproof motor frame is explained in detail, namely, the motor 9 is fixed in a motor box 701 on the waterproof motor frame 7 through two mounting holes 706 and two screws 24, and a sealing ring 21 is embedded on an output shaft sleeve of the motor; an output shaft on the motor 9 penetrates through the sealing ring 21, an inner hole of the sealing ring 21 is slightly tightly matched with the output shaft on the motor 9, and meanwhile, the output shaft on the motor 9 can rotate well in the sealing ring 21; secondly, two wires are connected with a connecting terminal on the motor 9; finally, the inlet of the motor box 701 is closed by glue filling. According to the installation mode of the motor 9, moisture in the air is isolated, on one hand, the motor 9 is protected, and on the other hand, the electric safety is reliably guaranteed.

The motor gear transmission structure is further described with reference to fig. 3.

The motor gear transmission mechanism comprises a primary gear 22 and a duplicate gear 23 which are matched with the output shaft of the motor, the duplicate gear 23 comprises a pinion 2301 and a bull gear 2302, the bull gear 2302 is matched with the primary gear 23, and the pinion 2301 is matched with an external driving disc gear 1203 on the external driving disc 12; the primary gear 22 and the duplicate gear 23 are installed in a gear groove 702 on the waterproof motor frame 7, and the large gear 2302 is under the small gear 2301 and connected; the pinion 2301 has a first shaft hole 2303 formed therein to be fitted with the gear round bar 25, the first shaft hole 2303 being movable with the gear round bar 25, a second shaft hole 2304 formed below the first shaft hole 2303 to be fitted with the gear step 709, the second shaft hole 2304 being movable with the gear step 709, the first shaft hole 2303 being connected with the second shaft hole 2304.

When the motor 9 is energized to rotate, the primary gear 22 on the motor 9 drives the bull gear 2302 on the duplicate gear 23 to rotate, and since the pinion gear 2301 and the bull gear 2302 are integrated, the pinion gear 2301 follows the bull gear 2302 to move synchronously, thereby driving the external driving disc gear 1203 on the external driving disc 12 to rotate.

The reversing action feedback device is further specifically described with reference to fig. 1 and 2.

The reversing action feedback device comprises a Hall sensor 11, a fixed frame 10 and magnets 26, wherein the Hall sensor 11 is installed on the fixed frame 10, the fixed frame 10 is fixed with a valve seat 1, the position height of a magnetic induction area of the Hall sensor 11 is consistent with the position height of a magnetic field generated by the magnets 26, one surface of the Hall sensor 11, which is electrified, generates magnetic induction intensity and is tangent to the outer wall of a sleeve 2, the magnets 26 are fixed in magnetic grooves 1904 on an active rotating valve disc 19 on a reversing valve disc device, the number of the magnets 26 is 1 or 2, and the number of the Hall sensors 11 is 1 or 2; if only one magnet 26 and one Hall sensor 11 are arranged, the Hall sensor 11 is arranged at the position corresponding to the D tube 3, the C tube 4 or the E tube 6; if only one magnet 26 and two hall sensors 11 are provided, the two hall sensors 11 are respectively arranged at the positions corresponding to the C tube 4 and the E tube 6, or at the positions corresponding to the C tube 4 and the D tube 3, or at the positions corresponding to the E tube 6 and the D tube 3; if two magnets 26 and one Hall sensor 11 are arranged, the Hall sensor is arranged at the position corresponding to the D tube 3, or the C tube 4, or the E tube 6; if there are two magnets 26 and two hall sensors 11, the two hall sensors 11 are installed at positions corresponding to the C-tube 4 and the E-tube 6, respectively.

How the hall sensor 11 outputs a position signal will be further explained by the structure of the above-mentioned commutation motion feedback device.

When only one magnet 26 and one hall sensor 11 are arranged and the hall sensor 11 is arranged at the position corresponding to the D-tube 3, if the magnet 26 is arranged in the magnetic groove 1904 corresponding to the first limit groove 19071, when the first limit groove 19071 is in contact with the D-tube 3 in the rotation process of the active commutation valve disc 19, the position of the magnet is induced in the electrifying process of the hall sensor 11, and a position signal is sent to the controller to be processed by the controller; when the controller gives a signal for the motor 9 to rotate reversely, namely the active reversing valve disc 19 rotates reversely, the Hall sensor 11 senses that the magnet 26 leaves, no position signal is output, and the controller controls the motor 9 to rotate reversely through time; if the Hall sensor 11 does not sense the magnet 26 is away, the four-way reversing valve is indicated to have a problem.

When only one magnet 26, two hall sensors 11 and the hall sensor 11 are located at the corresponding position of the C tube 4 or the E tube 6, or when two magnets 26, one hall sensor 11 and the hall sensor 11 are located at the corresponding position of the C tube 4 or the E tube 6, the reversing action feedback control model is the same as the above.

When only one magnet 26 (assuming that the magnet 26 is installed in the magnetic groove 1904 corresponding to the first limit groove 19071), two hall sensors 11 and the hall sensors 11 are located at the positions corresponding to the C tube 4 or the D tube 3, assuming that the controller controls the motor 9 to rotate forward, the active rotary valve disc 19 rotates along with the motor 9, the first limit groove 19071 collides with the D tube 3, and when the hall sensor 11 corresponding to the D tube 3 senses the position of the magnet, the position signal is sent to the controller, so that the controller processes the position signal; when the controller controls the motor 9 to rotate reversely, the driving rotary valve disc 19 rotates along with the motor 9, the second limit groove 19072 collides with the D tube 3, and when the hall sensor 11 corresponding to the C tube 4 senses the position of the magnet, a position signal is sent to the controller, so that the controller processes the position signal. Similarly, when there is only one magnet 26 (assuming that the magnet 26 is installed in the magnetic slot 1904 corresponding to the first limit slot 19071), two hall sensors 11, and the hall sensor 11 is located at the position corresponding to the E-tube 6 or the D-tube 3, and there are two magnets 26 and one hall sensor 11 and the hall sensor 11 is located at the position corresponding to the D-tube 3, and there are two magnets 26 and two hall sensors 11 and the hall sensor 11 is located at the position corresponding to the C-tube 4 and the E-tube 6, the control principle is the same as above.

The above embodiments are only for illustrating the technical conception and the characteristics of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention, and accordingly, the present invention is not limited by the embodiments. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (10)

1. The utility model provides a four-way reversing valve, its includes valve body, motor, waterproof motor frame, protecting crust, motor gear drive, magnetic coupling rotary device, planetary reduction mechanism, switching-over valve disk device and switching-over action feedback device, its characterized in that: the motor is arranged in a motor box on a waterproof motor frame, the waterproof motor frame is sleeved on the valve body, and the protective shell is arranged on the waterproof motor frame;

the motor drives the magnetic coupling rotating device through the motor gear transmission mechanism, and an inner driving disc in the magnetic coupling device drives the reversing valve disc device to rotate through the planetary speed reducing mechanism;

the reversing action feedback device comprises a Hall sensor and a magnet, the magnet is embedded in the reversing valve disc device, and the Hall sensor acquires a position signal of the reversing valve disc device through magnetic induction intensity.

2. The four-way reversing valve of claim 1, wherein: the reversing action feedback device further comprises a fixing frame, the Hall sensor is installed on the fixing frame, the fixing frame is fixed on a valve seat of the valve body, the position height of a magnetic induction area of the Hall sensor is consistent with the position height of a generated magnetic field of the magnet, one surface of the Hall sensor, which is electrified, of the generated magnetic induction intensity is tangent to the outer wall of the valve body, and the magnet is fixed in a magnetic groove in an active rotating valve disc on the reversing valve disc device.

3. The four-way reversing valve of claim 1, wherein: the number of the magnets is 1 or 2, and the number of the Hall sensors is 1 or 2; if only one magnet and one Hall sensor are arranged, the Hall sensor is arranged at the position corresponding to the D tube, or the C tube, or the E tube; if only one magnet and two Hall sensors are arranged, the two Hall sensors are arranged at the positions corresponding to the C tube and the E tube, or at the positions corresponding to the D tube and the C tube; if two magnets and one Hall sensor are arranged, the Hall sensor is arranged at the position corresponding to the D tube, or the C tube, or the E tube; if two magnets and two Hall sensors are arranged, the two Hall sensors are arranged at the positions corresponding to the C tube and the E tube.

4. The four-way reversing valve of claim 1, wherein: the waterproof motor frame comprises the motor box matched with the motor shell, a fixed sleeve frame, an external driving disc supporting platform and a gear groove; the gear groove is formed above the motor box, the fixed sleeve frame is fixed on the outer wall of the valve body, the external driving disk supporting platform matched with the external driving disk is formed above the fixed sleeve frame, and the external driving disk supporting platform and the fixed sleeve frame are connected with the gear groove.

5. The four-way reversing valve of claim 4, wherein: the motor gear transmission mechanism comprises a primary gear and a duplicate gear which are matched with the output shaft of the motor, the duplicate gear comprises a pinion and a bull gear, the bull gear is matched with the primary gear, and the pinion is matched with the external driving disk; the primary gear and the duplicate gear are arranged in a gear groove on the waterproof motor frame.

6. The four-way reversing valve of claim 1, wherein: the reversing valve disc device comprises a driving rotary valve disc and a driven rotary valve disc, wherein the driven rotary valve disc is embedded into the driving rotary valve disc, and rotates along with the rotation of the driving rotary valve disc.

7. The four-way reversing valve of claim 6, wherein: the driven rotary valve disc is provided with a first positioning hole matched with a central shaft of the four-way reversing valve, a positioning cylinder is formed outside the first positioning hole, a sealed inner groove is formed on the side surface of the positioning cylinder, and a sealing end surface which is contacted with the upper end surface of the valve seat and matched with the upper end surface of the valve seat is formed below the sealed inner groove.

8. The four-way reversing valve of claim 6, wherein: the driving rotary valve disc is provided with a first slot and a second slot, and the first slot is opposite to the second slot; a second positioning hole matched with the central shaft is formed in the right center of the driving rotary valve disc, a positioning cylindrical groove is formed below the second positioning hole, and the side face of the positioning cylindrical groove is separated from the first open groove and communicated with the second open groove; and gear positioning columns matched with the planetary gears are formed on the upper end surfaces of the first open groove and the second open groove.

9. The four-way reversing valve of claim 8, wherein: a first limiting groove and a second limiting groove which are matched with the D pipe are formed in two sides of the first open groove, and the first limiting groove and the second limiting groove form an angle of 90 degrees; one or two magnetic grooves matched with the magnets are arranged on the outer wall of the first open groove, and if only one magnetic groove is arranged, the center position of the magnetic groove, the center of the first limit groove or the second limit groove and the circle center are on the same straight line; if two magnetic grooves are arranged, the two magnetic grooves form an angle of 90 degrees, and the center positions of the magnetic grooves, the center of the first limiting groove and the circle center are on the same straight line; and the center position of the other magnetic slot, the center of the second limit slot and the circle center are on the same straight line.

10. The four-way reversing valve of claim 1, wherein: the magnetic coupling rotating device comprises an inner driving disk, an outer driving disk, inner magnetic steel and outer magnetic steel; the inner magnetic steel is embedded in a first clamping groove on the inner driving disc, and the outer magnetic steel is embedded in a second clamping groove on the outer driving disc; the inner driving disc is provided with a primary sun gear, the primary sun gear is embedded into the planetary reduction mechanism, the planetary reduction mechanism is fixed on the inner wall of the valve body through an inner gear ring, and the inner gear ring is positioned between the inner driving disc and the reversing valve disc device.

Images