CN212028701U

CN212028701U - Direct-acting four-way reversing valve for air conditioner

Info

Publication number: CN212028701U
Application number: CN202020632012.7U
Authority: CN
Inventors: 沈庆华
Original assignee: Taizhou Zhuoyi Refrigeration Equipment Co ltd
Current assignee: Taizhou Zhuoyi Refrigeration Equipment Co ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-11-27
Anticipated expiration: 2030-04-24

Abstract

The valve core is positioned in the valve body, the valve body comprises a shell and a transmission mechanism, the shell is provided with the transmission mechanism, the transmission mechanism is connected with the valve core, the valve core comprises a rotary type reversing mechanism, a planetary speed reducing mechanism and a magnetic coupling rotating mechanism, the magnetic coupling rotating mechanism is connected with the planetary speed reducing mechanism, and the planetary speed reducing mechanism is connected with the rotary type reversing mechanism. The valve is driven by a direct-acting type micro direct current motor, the driving force is constant, the reversing process is not influenced by the system pressure, the reliability of the system is favorably improved, the valve can be powered off after reversing is finished, the state after reversing is kept, the service life of a product is favorably prolonged, the energy efficiency of the system is favorably improved, and the energy conservation is powerfully guaranteed. The valve adopts a magnetic coupling mode to transmit torque, solves the contradiction between external source drive and sealing, realizes external direct-acting control, and gets rid of the dependence on the system working condition.

Description

Direct-acting four-way reversing valve for air conditioner

Technical Field

The utility model relates to a switching-over valve technical field, concretely relates to idle call direct action formula four-way reversing valve.

Background

The four-way valve commonly used by the existing air conditioner is a pilot-operated reversing valve, the pilot-operated reversing valve has high energy consumption, an electromagnetic coil needs to be electrified for a long time in a heating mode, the energy conservation is not facilitated, the heat conductivity is high, and the adverse effect is brought to the improvement of the energy efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a direct-acting four-way reversing valve for an air conditioner aiming at the defects existing in the prior art.

The valve core is positioned in the valve body, the valve body comprises a shell and a transmission mechanism, the shell is provided with the transmission mechanism, the transmission mechanism is connected with the valve core, the valve core comprises a rotary type reversing mechanism, a planetary speed reducing mechanism and a magnetic coupling rotating mechanism, the magnetic coupling rotating mechanism is connected with the planetary speed reducing mechanism, and the planetary speed reducing mechanism is connected with the rotary type reversing mechanism.

Drive mechanism include motor, worm, turbine and mounting bracket, the mounting bracket be located the shell body on, the mounting bracket on be equipped with the worm, worm one end pass the mounting bracket and connect the motor, the other end passes through the bearing and connects the mounting bracket, worm meshing turbine, the turbine be equipped with the disc of meshing tooth for the lateral wall.

The magnetic coupling rotating mechanism comprises a driving wheel, inner magnetic steel, outer magnetic steel and a central shaft, the driving wheel consists of a shaft sleeve, a support frame and an outer shaft ring with a groove, the shaft sleeve is outwards connected with the support frame, the support frame consists of eight groups of ribs, the ribs are connected with the groove on the outer shaft ring, the inner magnetic steel is arranged in the groove, the outer magnetic steel is embedded on the inner wall of the turbine, and the central shaft is arranged in the shaft sleeve of the driving wheel.

The shell comprises a shell body and a cover cap, the shell body is connected with the cover cap, and the center of the cover cap is connected with the central shaft through a nut.

The planetary reduction mechanism comprises a primary reduction mechanism, a secondary reduction mechanism, a tertiary reduction mechanism and a reversing valve disc, the reversing valve disc is provided with the tertiary reduction mechanism, the tertiary reduction mechanism is connected with the secondary reduction mechanism, the secondary reduction mechanism is connected with the primary reduction mechanism, the primary reduction mechanism is connected with a driving wheel, the bottom of the driving wheel is connected with a primary sun wheel, the primary sun wheel is meshed with a primary planet wheel, the primary planet wheel is connected with a primary planet wheel disc, the bottom of the primary planet wheel disc is provided with a rear secondary sun wheel, the secondary sun wheel is meshed with a secondary planet wheel, the secondary planet wheel is arranged on the secondary planet wheel disc, the bottom of the secondary planet wheel disc is provided with a tertiary sun wheel, the tertiary sun wheel is meshed with a tertiary planet wheel, and the tertiary planet wheel is arranged on the reversing valve disc, the outer parts of the primary planet wheel, the secondary planet wheel and the tertiary planet wheel are meshed with an inner gear ring, and a central shaft is inserted in the centers of the driving wheel, the primary planet gear disc, the secondary planet gear disc and the reversing valve disc.

The rotary reversing mechanism comprises a reversing valve disc, a valve seat and a connecting pipe connected with the valve seat, the reversing valve disc is rotatably connected with the valve seat, the valve seat is provided with two high-pressure openings and two low-pressure openings, and the high-pressure openings and the low-pressure openings are respectively connected with the connecting pipe.

The utility model has the advantages that: the direct-acting four-way reversing valve for the air conditioner is compact in structure, 1, the direct-acting miniature direct-current motor is adopted for driving, the driving force is constant, the reversing process is not influenced by system pressure, and the reliability of a system is improved.

2. The valve can be powered off after reversing is finished, the state after reversing is kept, the service life of a product is prolonged, the energy efficiency of a system is improved, and powerful guarantee is provided for energy conservation.

3. The valve adopts a magnetic coupling mode to transmit torque, solves the contradiction between external source drive and sealing, realizes external direct-acting control, and gets rid of the dependence on the system working condition.

4. According to the working principle of the direct-acting four-way valve, the installation direction of the direct-acting four-way valve is any angle, so that convenience is brought to installation and design of customers.

5. The heat conduction efficiency is low, and the heat conductivity of the 304 stainless steel valve body of this valve and the drive wheel of nylon is decided, and the coefficient of heat conductivity of stainless steel 304 is 16W/m.K, and the coefficient of heat conductivity of nylon is 0.26 ~ 0.35W/m.K, and the coefficient of heat conductivity is low, and it is little to have decided the heat loss of refrigerant, provides reliable guarantee for improving the efficiency.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural diagram of the transmission mechanism.

Fig. 3 is a schematic structural view of the magnetic coupling rotation mechanism.

Fig. 4 is a schematic view of the internal structure of the planetary reduction mechanism.

Fig. 5 is a schematic structural view of the rotary reversing mechanism.

Fig. 6 is a schematic view of the structure of the valve seat.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example 1, as shown: the utility model provides an idle call direct action formula four-way reversing valve, valve body and case, the case be located the valve body, the valve body include casing and drive mechanism 1, the casing on install drive mechanism 1, drive mechanism 1 connect the case, the case include rotation type reversing mechanism 4, planetary reduction mechanism 3 and magnetic coupling rotary mechanism 2, magnetic coupling rotary mechanism 2 connect planetary reduction mechanism 3, planetary reduction mechanism 3 connect rotation type reversing mechanism 4, whole appearance is pleasing to the eye, clean and tidy, small, the volume is light.

Drive mechanism 1 include motor 101, worm 102, turbine 103 and mounting bracket 104, mounting bracket 104 be located the shell body, mounting bracket 104 on be equipped with worm 102, worm 102 one end pass mounting bracket 104 and connect motor 101, motor 101 adopts high rotational speed, carries out reliable, longe-lived miniature direct current motor, the worm 102 other end passes through the bearing and connects mounting bracket 104, worm 102 adopts intensity height, smooth finish height, corrosion-resistant C3604 material, worm 102 meshing turbine 103, turbine 103 be equipped with the disc of meshing tooth for the lateral wall, turbine 103 adopt high temperature resistant, self-lubricating, the good nylon material of mechanical properties, it forms through moulding plastics.

When the miniature direct current motor is electrified, the worm 102 rotates synchronously with the motor 101, the turbine 103 rotates around the central shaft 203 under the action of the axial thrust of the worm 102, so that the assembly is simple and convenient, the full-automatic assembly is easy to implement, the product reliability is improved, the production cost is reduced, human factors are eliminated, and the product quality is reliably guaranteed.

The magnetic coupling rotating mechanism 2 comprises a driving wheel, an internal magnetic steel 205, an external magnetic steel 204 and a central shaft 203, the driving wheel is composed of a shaft sleeve 202, a supporting frame 206 and an external shaft ring 201 with a groove, the shaft sleeve 202 is outwards connected with the supporting frame 206, the supporting frame 206 is composed of eight groups of ribs, the ribs are connected to the groove on the external shaft ring 201, the internal magnetic steel 205 is arranged in the groove, the external magnetic steel 204 is embedded on the inner wall of the turbine 103, and the central shaft 203 is arranged in the shaft sleeve 202 of the driving wheel.

The driving wheel is made of nylon with high temperature resistance, self-lubrication and excellent mechanical properties through injection molding, and the inner magnetic steel 205 and the outer magnetic steel 204 are made of neodymium iron boron with nickel plating and corrosion resistance, strong magnetism and high temperature resistance.

The casing include shell body and block, the shell body connect the block, the center department of block be connected with center pin 203 through the nut, the leakproofness is good, interior, outer leak source compress extremely in the design process, played certain guarantee effect to product reliability, energy efficiency ratio.

The planetary reduction mechanism 3 comprises a first-stage reduction mechanism, a second-stage reduction mechanism, a third-stage reduction mechanism and a reversing valve disc 403, the reversing valve disc 403 is provided with the third-stage reduction mechanism, the third-stage reduction mechanism is connected with the second-stage reduction mechanism, the second-stage reduction mechanism is connected with the first-stage reduction mechanism, the first-stage reduction mechanism is connected with a driving wheel, the bottom of the driving wheel is connected with a first-stage sun wheel 301, the first-stage sun wheel 301 is meshed with a first-stage planet wheel 308, the first-stage planet wheel 308 is connected with a first-stage planet wheel 302, the bottom of the first-stage planet wheel 302 is provided with a rear second-stage sun wheel 307, the second-stage sun wheel 307 is meshed with a second-stage planet wheel 303, the second-stage planet wheel 303 is arranged on the second-stage planet wheel 306, the bottom of the second-, the three-stage planet wheel 305 is arranged on a reversing valve disc 403, the external meshing inner gear ring 309 of the primary planet wheel 308, the secondary planet wheel 303 and the three-stage planet wheel 305, and a central shaft 203 is inserted in the centers of the driving wheel, the primary planet wheel disc 302, the secondary planet wheel disc 306 and the reversing valve disc 403.

Characteristics of the planetary reduction mechanism 3: 1. high torsion resistance and impact resistance; 2. the volume is small and the weight is light; 3. the noise is low.

The rotary reversing mechanism 4 comprises a reversing valve disc 403, a valve seat 402 and a connecting pipe 401 connected with the valve seat 402, wherein the reversing valve disc 403 is rotatably connected with the valve seat 402, the valve seat 402 is provided with two high-pressure openings and two low-pressure openings, and the high-pressure openings and the low-pressure openings are respectively connected with the connecting pipe 401.

The direct-acting four-way valve adopts a soft seal in a sealing mode, the main body of the direct-acting four-way valve is a reversing valve disc 403, the reversing valve disc 403 is made of nylon with excellent performance, a low-pressure area of the reversing valve disc 403 is tightly attached to the end face of a valve seat 402, a high-pressure area and the low-pressure area are not communicated, certain guarantee is provided for improving the energy efficiency ratio of the system, and the good sealing performance depends on the following factors.

The flatness of the end face of the valve seat 402 and the sealing surface of the reversing valve disc 403 is improved after grinding; the system pressure is 0.25-3.1MPa, the stress area S of the low-pressure area is 356.67 square millimeters, the axial force F received by the reversing valve disc 403 is F, the value of F is PS, and the value of F is 89.17-1105.68N; the interior of the valve body is in a low pressure state, so that the reversing valve disc 403 is tightly attached to the end face of the valve seat 402 under the action of the spring.

The principle is as follows: when the micro direct current motor drives the worm 102 to rotate, the turbine 103 rotates under the action of the axial thrust of the worm 102, and the driving wheel and the turbine 103 synchronously move under the action of the coupling magnetic force of the inner magnetic steel 205 and the outer magnetic steel 204; meanwhile, the primary sun gear 301 on the driving wheel rotates synchronously with the driving wheel; the primary planet gears 308 rotate in the opposite direction to the primary sun gear 301. Under the braking action of the internal gear ring 309, the whole set of primary planet gears automatically circumrotate along the internal gear ring 309, and the primary planet gear disc 302 makes the circular motion in the same direction as the direction 301 of the primary sun gear. At the moment, the planetary speed change stage is one-stage speed change; the principle of the second-stage and third-stage speed change is the same as that of the first-stage and third-stage speed change, and the final purpose is to enable the reversing valve disc 403 to rotate in the same direction as that of the driving wheel. After the reversing action is finished, the direct current motor 101 is powered off, the transmission mechanism 1 does not need to transmit, and the state after the reversing is finished is kept. Reduce the wearing and tearing of part in drive mechanism 1, provide reliable guarantee for improving product life-span.

Finally, the embodiments were chosen and described in order to best explain the principles of the invention and the patent disclosure, and are not intended to be limited to the details shown. Modifications and equivalents of the embodiments of the invention may be made by those skilled in the art without departing from the spirit and scope of the invention, and are intended to be covered by the appended claims.

Claims

1. The utility model provides an idle call direct action formula four-way reversing valve, valve body and case, the case be located the valve body, its characterized in that: the valve body comprises a shell and a transmission mechanism, the shell is provided with the transmission mechanism, the transmission mechanism is connected with a valve core, the valve core comprises a rotary reversing mechanism, a planetary speed reducing mechanism and a magnetic coupling rotating mechanism, the magnetic coupling rotating mechanism is connected with the planetary speed reducing mechanism, and the planetary speed reducing mechanism is connected with the rotary reversing mechanism.

2. A direct-acting four-way selector valve for air conditioners as claimed in claim 1, wherein: drive mechanism include motor, worm, turbine and mounting bracket, the mounting bracket be located the shell body on, the mounting bracket on be equipped with the worm, worm one end pass the mounting bracket and connect the motor, the other end passes through the bearing and connects the mounting bracket, worm meshing turbine, the turbine be equipped with the disc of meshing tooth for the lateral wall.

3. A direct-acting four-way selector valve for air conditioners as claimed in claim 1, wherein: the magnetic coupling rotating mechanism comprises a driving wheel, inner magnetic steel, outer magnetic steel and a central shaft, the driving wheel consists of a shaft sleeve, a support frame and an outer shaft ring with a groove, the shaft sleeve is outwards connected with the support frame, the support frame consists of eight groups of ribs, the ribs are connected with the groove on the outer shaft ring, the inner magnetic steel is arranged in the groove, the outer magnetic steel is embedded on the inner wall of the turbine, and the central shaft is arranged in the shaft sleeve of the driving wheel.

4. A direct-acting four-way selector valve for air conditioners as claimed in claim 1, wherein: the shell comprises a shell body and a cover cap, the shell body is connected with the cover cap, and the center of the cover cap is connected with the central shaft through a nut.

5. A direct-acting four-way selector valve for air conditioners as claimed in claim 1, wherein: the planetary reduction mechanism comprises a primary reduction mechanism, a secondary reduction mechanism, a tertiary reduction mechanism and a reversing valve disc, the reversing valve disc is provided with the tertiary reduction mechanism, the tertiary reduction mechanism is connected with the secondary reduction mechanism, the secondary reduction mechanism is connected with the primary reduction mechanism, the primary reduction mechanism is connected with a driving wheel, the bottom of the driving wheel is connected with a primary sun wheel, the primary sun wheel is meshed with a primary planet wheel, the primary planet wheel is connected with a primary planet wheel disc, the bottom of the primary planet wheel disc is provided with a rear secondary sun wheel, the secondary sun wheel is meshed with a secondary planet wheel, the secondary planet wheel is arranged on the secondary planet wheel disc, the bottom of the secondary planet wheel disc is provided with a tertiary sun wheel, the tertiary sun wheel is meshed with a tertiary planet wheel, and the tertiary planet wheel is arranged on the reversing valve disc, the outer parts of the primary planet wheel, the secondary planet wheel and the tertiary planet wheel are meshed with an inner gear ring, and a central shaft is inserted in the centers of the driving wheel, the primary planet gear disc, the secondary planet gear disc and the reversing valve disc.

6. A direct-acting four-way selector valve for air conditioners as claimed in claim 1, wherein: the rotary reversing mechanism comprises a reversing valve disc, a valve seat and a connecting pipe connected with the valve seat, the reversing valve disc is rotatably connected with the valve seat, the valve seat is provided with two high-pressure openings and two low-pressure openings, and the high-pressure openings and the low-pressure openings are respectively connected with the connecting pipe.