CN107806725B - Throttling device, refrigerant circulating system and air conditioner - Google Patents

Throttling device, refrigerant circulating system and air conditioner Download PDF

Info

Publication number
CN107806725B
CN107806725B CN201711275692.0A CN201711275692A CN107806725B CN 107806725 B CN107806725 B CN 107806725B CN 201711275692 A CN201711275692 A CN 201711275692A CN 107806725 B CN107806725 B CN 107806725B
Authority
CN
China
Prior art keywords
throttle
throttling
orifice
adjusting
plate
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
CN201711275692.0A
Other languages
Chinese (zh)
Other versions
CN107806725A (en
Inventor
欧阳鑫望
钟瑞兴
蒋楠
蒋彩云
陈玉辉
刘增岳
雷连冬
陈健
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Original Assignee
Gree Electric Appliances Inc of Zhuhai
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 Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN201711275692.0A priority Critical patent/CN107806725B/en
Publication of CN107806725A publication Critical patent/CN107806725A/en
Application granted granted Critical
Publication of CN107806725B publication Critical patent/CN107806725B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/05—Refrigerant levels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2501—Bypass valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Safety Valves (AREA)

Abstract

The invention relates to the technical field of refrigerant circulating systems, in particular to a throttling device, a refrigerant circulating system and an air conditioner. The throttling device comprises a throttling orifice device, wherein the throttling orifice device comprises a throttling orifice and an adjusting mechanism, the throttling orifice is provided with a throttling orifice, and the adjusting mechanism is used for adjusting the throttling area of the throttling orifice. Unlike available throttle plate with unchanged throttle hole diameter and non-adjustable throttle area, the present invention has throttle hole with throttle area regulating mechanism to make the throttle device capable of regulating refrigerant flow flexibly based on practical requirement and thus effectively improving throttle performance of the throttle device.

Description

Throttling device, refrigerant circulating system and air conditioner
Technical Field
The invention relates to the technical field of refrigerant circulating systems, in particular to a throttling device, a refrigerant circulating system and an air conditioner.
Background
As shown in fig. 1, in the refrigerant circulation systems such as an air conditioner refrigeration circulation system and a centrifuge refrigeration circulation system, the refrigerant circulation system mainly comprises four major parts including a compressor (not shown in the figure), a condenser 3', a throttling device and an evaporator 4', and the four basic processes of compression, condensation, throttling and evaporation are correspondingly completed. The throttling device is used for achieving the purpose of flow regulation by increasing the pressure loss of the refrigerant flowing in a pipeline between the condenser 3 'and the evaporator 4', so that the high-temperature and high-pressure refrigerant flowing out of the condenser 3 'is changed into a low-temperature and low-pressure refrigerant and then enters the evaporator 4' for evaporation.
As can be seen from fig. 1, the conventional throttling device includes a throttle plate 1', and further includes a bypass valve 2' parallel connected with the throttle plate 1' to meet the requirement of refrigerant flow regulation accuracy when the centrifugal unit is operated under variable working conditions, so as to obtain better performance of the unit.
However, as shown in fig. 2 and 3, in the prior art, the orifice 11 'of the orifice plate 1' has a fixed aperture d, so that the throttle area of the orifice 11 'is not adjustable, and the adjustment range of the bypass valve 2' is limited, which makes it difficult for the throttle device to control the flow more reasonably according to the actual working conditions, and affects the performance and operation reliability of the unit. On one hand, under the condition of large load and large flow, because the aperture of the orifice 11' of the orifice plate 1' cannot be changed, the flow is difficult to be controlled by adjusting the opening of the bypass valve 2', and the phenomena of suction, liquid entrainment and the like are easy to occur; on the other hand, in the case of small load and small flow, the individual bypass valve 2' adjustment may have a disadvantage such as insufficient cooling capacity, and it is difficult to control the unit to operate in a good performance state.
Disclosure of Invention
The invention aims to solve the technical problems that: the throttle performance of the throttle device is improved.
In order to solve the technical problems, the invention provides a throttling device which comprises a throttling orifice device, wherein the throttling orifice device comprises a throttling orifice plate and an adjusting mechanism, the throttling orifice plate is provided with a throttling orifice, and the adjusting mechanism is used for adjusting the throttling area of the throttling orifice.
Optionally, the adjustment mechanism includes an actuating mechanism and an adjustment member, the adjustment member being movably disposed relative to the orifice plate, the actuating mechanism driving the adjustment member relative to the orifice plate between a first position in which the adjustment member is clear of the orifice and a second position in which the adjustment member shields at least a portion of the orifice.
Optionally, the adjustment member is movably disposed relative to the orifice plate, and the actuating mechanism drives the adjustment member between the first position and the second position.
Optionally, a chute is arranged on the orifice plate, the adjusting piece is in sliding fit with the chute, and the actuating mechanism drives the adjusting piece to slide in the chute to enable the adjusting piece to move between the first position and the second position.
Optionally, the length direction of the chute is along the aperture direction of the orifice.
Optionally, an actuating mechanism is movably coupled to the orifice plate, the actuating mechanism driving the adjustment member between the first position and the second position by movement relative to the orifice plate.
Optionally, the actuating mechanism comprises a threaded connection which is screwed onto the orifice plate and is in driving connection with the adjustment member, the adjustment member being movable between the first position and the second position by screwing the threaded connection.
Optionally, the adjustment mechanism further comprises a return member for applying a force to the adjustment member that moves the adjustment member from the second position to the first position.
Optionally, the orifice means comprises at least two orifice plate means, the orifice plates of the at least two orifice plate means being arranged in series with each other.
Optionally, the throttling device further includes a bypass valve disposed in parallel with the throttling orifice plate, and the bypass valve and the throttling orifice plate are disposed as follows: the change information of the orifice throttle area is fed back to the bypass valve, and the opening degree of the bypass valve can optionally further include information acquisition feedback means for acquiring the change information of the orifice throttle area and feeding back the acquired change information of the throttle area of the orifice to the bypass valve.
Optionally, the information acquisition feedback device comprises a displacement detection device, wherein the displacement detection device is used for detecting the displacement of the adjusting piece of the adjusting mechanism, converting the detected displacement of the adjusting piece into the change information of the throttling area of the throttling hole and feeding back to the bypass valve.
Alternatively, the displacement detecting means detects the displacement of the regulating member by detecting the displacement of the actuating mechanism of the regulating mechanism.
Alternatively, the throttle area variation information of each throttle plate of the throttle device arranged in series with each other is fed back to the bypass valve.
The invention also provides a refrigerant circulation system which comprises a condenser and an evaporator, and further comprises the throttling device, wherein the throttling device is communicated between the condenser and the evaporator.
The invention also provides an air conditioner which comprises a condenser and an evaporator, and further comprises the throttling device, wherein the throttling device is communicated between the condenser and the evaporator.
Unlike available throttle plate with unchanged throttle hole diameter and non-adjustable throttle area, the present invention has throttle hole with throttle area regulating mechanism to make the throttle device capable of regulating refrigerant flow flexibly based on practical requirement and thus effectively improving throttle performance of the throttle device.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 shows a schematic diagram of the principle of the prior art of the operation of a throttling device in combination with a condenser and an evaporator.
Fig. 2 shows a cross-sectional view of the orifice plate of fig. 1.
Fig. 3 shows an end view of the orifice plate of fig. 1.
Fig. 4 shows a schematic diagram of the principle of the operation of the throttling device according to the first embodiment of the invention in combination with a condenser and an evaporator.
Fig. 5 shows a cross-sectional view of the orifice plate apparatus of fig. 4.
Fig. 6 shows an end view of the orifice plate apparatus of fig. 4.
Fig. 7 shows a cross-sectional view of the orifice plate apparatus of fig. 5 operating in a maximum throttle area condition.
Fig. 8 shows an end view of the orifice plate apparatus of fig. 5 operating in a maximum throttle area condition.
Fig. 9 shows a cross-sectional view of the orifice plate apparatus of fig. 5 operating in an intermediate throttle area condition.
Fig. 10 shows an end view of the orifice plate apparatus of fig. 5 operating in an intermediate throttle area condition.
Fig. 11 shows a cross-sectional view of the orifice plate apparatus of fig. 5 operating in a minimum throttle area condition.
Fig. 12 shows an end view of the orifice plate apparatus of fig. 5 operating in a minimum throttle area condition.
Fig. 13 shows a schematic diagram of the principle of the operation of the throttling device according to the second embodiment of the invention in combination with a condenser and an evaporator.
In the figure:
1', orifice plate; 2', a bypass valve; 3', a condenser; 4', an evaporator;
11', orifice; 12', mounting holes;
1. an orifice plate; 2. a bypass valve; 3. a condenser; 4. an evaporator; 5. an adjusting mechanism;
11. an orifice; 12. a mounting hole; 13. a chute; 14. an orifice plate portion; 15. a first channel portion; 16. a second channel portion;
51. A threaded connection; 52. an adjusting plunger; 53. an adjusting member; 54. a spring; 55. a limiting piece; 531. an adjusting section; 532. a sliding part;
I. A feedback loop.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on embodiments of the present invention, are within the scope of the present invention.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for defining the components, and are merely for convenience in distinguishing the corresponding components, and the terms are not meant to have any special meaning unless otherwise indicated, so that the scope of the present invention is not to be construed as being limited.
Figures 4-13 illustrate two embodiments of the present invention. Referring to fig. 4-13, the throttling device provided by the invention comprises a throttling orifice device, wherein the throttling orifice device comprises a throttling orifice 1 and an adjusting mechanism 5, the throttling orifice 1 is provided with a throttling orifice 11, and the adjusting mechanism 5 is used for adjusting the throttling area of the throttling orifice 11.
In the invention, the regulating mechanism 5 of the throttling device can regulate the throttling area of the throttling hole 11 of the throttling hole plate 1, change the unadjustability of the throttling area of the throttling hole plate 1, and facilitate more flexible regulation of the refrigerant flow according to actual demands, thereby being beneficial to improving the throttling performance of the throttling device.
The regulating mechanism 5 of the present invention may include an actuating mechanism and an regulating member 53, the regulating member 53 being movably disposed with respect to the orifice plate 1, the actuating mechanism driving the regulating member 53 relative to the orifice plate 1 between a first position in which the regulating member 53 avoids the orifice 11 and a second position in which the regulating member 53 shields at least a portion of the orifice 11. Based on this, the regulator 53 can realize the regulation of the throttle area of the throttle hole 11 by opening and shielding the throttle hole 11 during the movement between the first position and the second position under the driving action of the actuating mechanism, and is simple and convenient.
Wherein the adjusting member 53 may be rotated to achieve movement between the first position and the second position, or the adjusting member 53 may be moved to achieve movement between the first position and the second position, or the movement of the adjusting member 53 between the first position and the second position may be a combined rotation and movement.
In order to enable the regulator 53 to be moved to adjust the throttle area of the throttle orifice 11, in the present invention, the regulator 53 may be movably disposed with respect to the throttle plate 1, and the actuator drives the regulator 53 between the first position and the second position. When the throttle area of the throttle hole 11 is adjusted by moving the adjusting member 53 relative to other movement modes, the adjustment is more convenient, and the adjustment with higher accuracy is also facilitated.
While the actuating mechanism of the present invention may be movably coupled to the orifice plate 1 for driving the adjustment member 53 between the first and second positions, and the actuating mechanism drives the adjustment member 53 between the first and second positions by movement relative to the orifice plate 1. Because the actuating mechanism and the movement mode of the adjusting piece 53 are both movable, complex movement conversion between the actuating mechanism and the actuating piece 53 is not needed, and the transmission path can be shorter, thereby being beneficial to realizing a more efficient transmission process and higher driving reliability.
In addition, in the present invention, the throttle device may further include a bypass valve 2 provided in parallel with the throttle plate 1, and the bypass valve 2 and the throttle plate 1 may be further provided between: the change information of the throttle area of the throttle hole 11 is fed back to the bypass valve 2, and the opening degree of the bypass valve 2 can be adjusted based on the change information of the throttle area of the throttle hole 11. Based on this, throttling arrangement can realize the throttling procedure of self-feedback, has the throttle function of self-feedback promptly for bypass valve 2 and orifice plate 1 can carry out the interactive control between the two again through the self-feedback effect when parallelly connected work, in the throttle control is participated in the cooperation of the throttle area change information according to orifice 11 more pertinently to the bypass valve 2 of being convenient for, realize controlling refrigerant flow more accurate and more nimble, further improve throttling arrangement's throttle performance.
In order to realize automatic feedback of the throttle area change information of the throttle hole 11 to the bypass valve 2, the throttle device of the present invention may further include information acquisition feedback means for acquiring the change information of the throttle area of the throttle hole 11 and feeding back the acquired throttle area change information of the throttle hole 11 to the bypass valve 2.
The invention will be further described in connection with two embodiments shown in fig. 4-13.
First, a first embodiment shown in fig. 4 to 12 will be described.
As shown in fig. 4, in this embodiment, a throttle device is connected between the condenser 3 and the evaporator 4 for throttle control of refrigerant flowing from the condenser 3 to the evaporator 4, and includes a throttle plate device including a throttle plate 1 and an adjusting mechanism 5, and a bypass valve 2 provided in parallel with the throttle plate 1.
The whole working principle of the throttling device is as follows: the high-speed, high-temperature and high-pressure refrigerant output by the condenser 3 is changed into a low-temperature and low-pressure refrigerant with low flow rate after passing through the parallel throttling function of the throttle plate 1 and the bypass valve 2, flows into the evaporator 10 for evaporation, enters a compressor (not shown in the figure) for compression after the refrigerant is evaporated, flows into the condenser 3 again, and is subjected to the throttling process again after condensation, and the process is repeated.
As can be seen from fig. 4 to 6, the orifice plate 1 includes an orifice portion 14, a first passage portion 15, and a second passage portion 16, the orifice portion 14 is provided with an orifice 11 having a diameter d, and the first passage portion 15 and the second passage portion 16 are disposed opposite to each other on both sides of the orifice portion 14 in the thickness direction and form a passage communicating with the orifice 11. And the part of the orifice plate part 14 located outside the passage is also provided with a mounting hole 12 for mounting the orifice plate 1.
When flowing through the orifice plate 1, the refrigerant flows through the first passage portion 15, the orifice 11, and the second passage portion 16 in this order, and is decelerated and depressurized at the orifice 11, thereby realizing the restriction. The high-temperature and high-pressure refrigerant having a high flow rate flowing out of the condenser 3 is introduced into the corresponding passage of the first passage portion 15, and the low-temperature and low-pressure refrigerant having a low flow rate flowing into the evaporator 4 after being throttled by the throttle hole 11 is introduced into the corresponding passage of the second passage portion 16. It can be seen that the first passage portion 15 side is a high-pressure region, and the second passage portion 16 side is a low-pressure region.
The adjusting mechanism 5 is used to adjust the throttle area of the throttle hole 11. As shown in fig. 4 and 5, in this embodiment, the adjustment mechanism 5 includes an actuation mechanism including a threaded connection 51 and an adjustment plunger 52, an adjustment member 53, a spring 54, and a stopper 55.
Wherein the regulator 53 is adapted to effect an adjustment of the throttle area of the throttle hole 11 by opening and shielding the throttle hole 11 during movement between the first position and the second position. In this embodiment, the adjusting member 53 is provided so as to be movable relative to the orifice plate 1. Specifically, as can be seen from fig. 5, the orifice plate 1 is provided with a chute 13, and the adjusting member 53 is slidably engaged with the chute 13. Based on this, the regulator 53 can be moved relative to the orifice plate 1 by sliding in the chute 13, thereby effecting an adjustment of the throttle area of the throttle orifice 11.
Compared with other modes, the embodiment realizes the movable arrangement of the regulating element 53 relative to the throttle plate 1 by arranging the chute 13, and has the advantages that on one hand, the chute 13 can play a better guiding role in the moving process of the regulating element 53, and the risk that the throttle area of the throttle hole 11 cannot be accurately regulated as required due to the deflection of the moving direction of the regulating element 53 is reduced; on the other hand, the movement stroke of the adjusting piece 53 is limited by the chute 13, so that the adjusting piece 53 can move between the first position and the second position more accurately and reliably, and a special limiting structure is not required to be additionally arranged, so that the structure is simpler.
For example, as can be seen in connection with fig. 7-12, in this embodiment the length of the chute 13 exactly meets the travel requirement of the adjustment member 53 between the first and second positions. Wherein:
As shown in fig. 8 and 9, when the top end of the chute 13 (i.e., the end far from the center of the orifice 11) corresponds to the first position of the regulator 53, and when the top end of the regulator 53 is located at the top end of the chute 13, the regulator 53 avoids the orifice 11, and does not shield the orifice 11, the orifice 11 is completely open, the effective throttle aperture of the orifice 11 is equal to the diameter d of the orifice 11, and the effective throttle aperture is the largest, and is the largest effective throttle aperture d max, and the throttle area of the orifice 11 is the largest at this time;
As shown in fig. 11 and 12, when the bottom end of the chute 13 (i.e., the end near the center of the orifice 11) corresponds to the second position of the regulator 53, and when the top end of the regulator 53 slides down to the bottom end of the chute 13, the regulator 53 shields the orifice 11, and the regulator 53 cannot slide down any more, its shielding of the orifice 11 is maximized, the effective throttle aperture of the orifice 11 is minimized, and the minimum throttle aperture d min is calculated, and at this time, the throttle area of the orifice 11 is minimized, in which, in detail, d min＝12dmax, the throttle area of the orifice 11 is correspondingly maximized;
As shown in fig. 9 and 10, when the regulator 53 slides from the top end of the chute 13 to the bottom end of the chute 13, the shielding of the orifice 11 by the regulator 53 gradually increases, the effective throttle aperture of the orifice 11 gradually decreases, and the throttle area of the orifice 11 gradually decreases, so that when the regulator 53 is located between the first position and the second position, the effective throttle aperture of the orifice 11 is greater than d min and less than d max, and may be referred to as an intermediate effective throttle aperture d mean.
In the adjusting process, it is only necessary to determine whether the adjusting member 53 is located at the top end or the bottom end of the chute 13, and accordingly determine whether the adjusting member 53 has reached the first position or the second position, so as to determine whether the throttling area of the throttle hole 11 has been adjusted to be maximum or minimum, and determine whether the adjusting member 53 is located at the top end or the bottom end of the chute 13, and determine whether the adjusting member 53 can continue to move up or down along the chute 13.
More specifically, as shown in fig. 5, in order to further simplify the adjustment process, the chute 13 of this embodiment is provided on the orifice portion 14 with the length direction of the chute 13 along the aperture direction of the orifice 11. Since the length direction of the chute 13 extends along the aperture direction of the orifice 11, when the regulator 53 slides along the chute 13, movement along the radial direction of the orifice 11 can be generated with respect to the orifice plate 1, which is advantageous in that the regulator 53 shields or opens more area of the orifice 11 when moving by the same displacement, and a more efficient adjustment process of the throttle area of the orifice 11 is realized.
As is clear from fig. 6, in this embodiment, the regulator 53 includes the regulator 531 and the slider 532, the regulator 531 is slidably engaged with the chute 13 by the slider 532, and the regulator 53 shields or opens the orifice 11 by the regulator 531. Wherein the adjusting portion 531 is semicircular. The semicircular diameter side is close to the center of the orifice 11 and the arc side is away from the center of the orifice 11 (i.e., the semicircular diameter side is down and the semicircular arc side is up in the figure). The sliding portion 532 protrudes from a surface of the adjusting portion 531 near the chute 13 and extends into the chute 13, so as to realize a sliding fit between the adjusting member 53 and the chute 13.
The semicircular arrangement of the adjusting part 531 has the advantage that the adjusting part 53 is better connected and matched with the actuating mechanism and the spring 54, and meanwhile, the adjusting part 53 can cover or open more area of the throttle hole 11 when moving for the same displacement, so that a more efficient adjusting process of the throttle area of the throttle hole 11 is realized. As can be seen from fig. 6, the semicircular shape of the adjusting portion 531 has a diameter larger than that of the orifice 11, which facilitates the adjusting portion 531 to completely shield the entire orifice 11 through which it passes at any height position, and thus the area of the orifice 11 can be adjusted more reliably.
The actuating mechanism is drivingly connected to the regulator 53 and is configured to drive the regulator 53 between a first position and a second position such that the regulator 53 is capable of effecting an adjustment of the restriction area of the orifice 11 by opening or masking the orifice 11. In this embodiment, the actuating mechanism drives the adjustment member 53 between the first and second positions by moving relative to the orifice plate 11.
In this embodiment, as shown in fig. 5, a screw 51 is provided on the first passage portion 15 and is screw-coupled with the first passage portion 15, and the screw 51 is drive-coupled with an adjusting member 53 by an adjusting plunger 52. The threaded connection 51 may be a screw, a stud, or the like. The head of the threaded connection is located outside the first channel portion 15.
Based on the above arrangement, the screw-threaded coupling member 51 is screw-coupled to the orifice plate 1 and is in driving connection with the regulating member 53. In this case, by screwing the screw connection member 51, the regulating member 53 can be moved between the first position and the second position, and the regulation of the throttle area of the throttle hole 11 can be realized, which is simple and convenient, and easy to operate. Furthermore, the use of the screw connection 51 has the advantage that, on the one hand, stepless adjustment of the throttle area of the throttle 11 can be achieved by adjusting the screwing depth of the screw connection 51, and the adjustment process is smoother; on the other hand, by utilizing the self-locking function of the screw connection member 51, the adjusting member 53 can be conveniently kept at a desired position after being adjusted in place, without additionally providing a special locking mechanism, the structure is simplified, and the operation is simplified; on the other hand, the threaded connection has a certain self-sealing effect, so that the influence of the arrangement of the actuating mechanism on the tightness of the passage of the orifice plate 1 can be reduced.
The spring 54 serves as a restoring member for applying a force to the regulating member 53 for moving the regulating member 53 from the second position to the first position. And the limiting member 55 is used for limiting the spring 54. Specifically, as can be seen from fig. 5 and 6, in this embodiment, the limiting member 55 is disposed on the orifice plate 1, and the spring 54 is connected between the limiting member 55 and the adjusting member 53. More specifically, the stopper 55 is provided on the orifice plate portion 14 and projects from the surface of the orifice plate portion 14 on the side of the first passage portion 15 toward the side of the first passage portion 15; and the spring 54 is abutted between the limiting member 55 and the adjusting member 53. In this way, the spring 54 has a certain pre-compression amount, which can play a certain pre-supporting role on the adjusting piece 53, preventing the adjusting piece 53 from automatically sliding down uncontrolled, so that the adjusting mechanism 5 can adjust the throttling area of the throttling hole 11 more reliably. In addition, as can be seen from fig. 6, a spring 54 is provided on each side of the regulator 53 at the center of the orifice 11, which is advantageous in that the regulator 53 is supported more stably, and the restoring force is greater, so that the regulator 53 is more easily restored.
For ease of understanding, the process of adjusting the throttle area of the throttle hole 11 by the adjusting mechanism 5 of this embodiment will be described herein by taking the throttle area reduction as an example: the screw connection piece 51 is screwed downwards to generate a pushing force, then the pushing force and the screwing depth are transmitted to the adjusting piece 53 through the adjusting plunger 52, so that the adjusting piece 53 slides downwards in the sliding groove 13, the throttle hole 11 is gradually shielded, and the throttle area of the throttle hole 11 is reduced.
As is apparent from the above-described adjustment process, during the adjustment by the adjustment mechanism 5, the displacement by which the adjustment member 53 slides along the chute 13 is equal to the screwing depth of the screw connection member 51, and the compression amount of the spring 54 is equal to the displacement by which the adjustment member 53 slides along the chute 13. Thus, by adjusting the screwing depth of the screw connection member 51, the displacement of the adjustment member 54 can be controlled, thereby changing the size of the through-flow section of the orifice plate 1, and further realizing the variable adjustment of the throttle flow rate by the throttle orifice plate 1. This also facilitates more accurate feedback of the throttle area variation information of the throttle hole 11 to the bypass valve 2. This will be further described below.
As shown in fig. 3, in order to further improve the throttle capability of the throttle device, in this embodiment, the bypass valve 2 provided in parallel with the throttle plate 1 is provided so as to be able to acquire throttle area variation information of the throttle hole 11 through the feedback loop I and adjust the opening degree of itself in accordance with the feedback information. Based on this, the flow regulation mode that does not influence each other between bypass valve 2 and the orifice plate 1 among the prior art can change, and realizes the flow regulation mode of interaction between bypass valve 2 and the orifice plate 1, can increase flow regulation scope to promote flow regulation precision, make throttling arrangement can more nimble carry out regulation control to the flow, satisfy the demand to refrigerant flow control under the different operating modes better, realize the higher efficient refrigeration heating process of unit.
In order to achieve the acquisition and feedback of the throttle area variation information of the throttle hole 11, the throttle device of this embodiment further includes information acquisition feedback means for acquiring the variation information of the throttle area of the throttle hole 11 and feeding back the acquired throttle area variation information of the throttle hole 11 to the bypass valve 2 through a feedback loop I.
Wherein in this embodiment, the information acquisition feedback means includes displacement detection means (not shown in the drawings) for detecting the displacement of the regulator 53 and for converting the detected displacement of the regulator 53 into information on the change in the throttle area of the orifice 11 and feeding back to the bypass valve 2. After detecting the displacement change, the displacement detection device can convert the displacement into an electric signal, the electric signal is fed back to a control device (not shown in the figure) of the bypass valve 2 through a feedback loop I, and the control device automatically adjusts the bypass valve 2 to achieve a proper opening degree according to the received feedback signal (namely the throttling area change information of the throttling hole 11), so that the throttling effect is improved, and the refrigerant flow and the actual demand are more met.
Specifically, in this embodiment, the displacement detecting means detects the displacement of the regulating member 53 by detecting the displacement of the actuating mechanism. In this way, the displacement detecting means is easier to arrange, the detecting process is simpler and the detecting sensitivity is higher than in the manner of directly detecting the displacement of the regulating member 53.
Wherein the displacement detection means may enable detection of the displacement of the actuating mechanism by detecting the displacement (i.e. the screwing depth) of the threaded connection 51. Since the displacement of the screw connection member 51 is equal to the displacement of the adjustment member 53 as described above, the displacement of the adjustment member 53 is detected by detecting the displacement of the screw connection member 51, so that the detection is more convenient and the detection result is more accurate. Specifically, the displacement detection means may realize detection of the displacement of the screw 51 by detecting the magnitude of the distance of the head portion of the screw 51 from the outer surface of the first passage portion 15. It will be understood that the distance of the head portion of the threaded connector 51 from the outer surface of the first passage portion 15 indirectly reflects the screwing depth of the threaded connector 51, so that the displacement of the regulator 53 can be reflected, and thus the throttle area change information of the throttle hole 11 can be reflected.
The following describes the process of adjusting the flow rate of the refrigerant by the throttling device according to the embodiment under different working conditions with reference to fig. 7 to 12:
(1) When the unit is operating under normal conditions, a large throttling capacity is not required, and at this time, as shown in fig. 7 and 8, the adjusting member 53 can be kept at the first position under the combined action of the actuating mechanism and the spring 54, so that the effective throttling aperture of the throttling hole 11 is the maximum effective throttling aperture d max, and the maximum throttling area is utilized for throttling. In this state, the throttle capability of the throttle plate 1 is the weakest. When the throttle capability needs to be increased, the throttle capability may be increased by opening the bypass valve 2 based on the throttle area variation information fed back to the throttle hole 11 in the bypass valve 2. At this time, the unit has low requirements on the change of the throttling capacity of the throttling device, so that the bypass valve 2 has enough adjustment range and capacity to ensure the throttling effect, and the unit can be kept to operate in a better state.
(2) When the unit operates under some severe working conditions, the throttle adjusting function of the bypass valve 2 alone is insufficient to meet the requirement of the unit on the throttle effect, so that at this time, as shown in fig. 9 and 10, the throttle plate 1 can adjust the effective throttle aperture of the throttle hole 11 to the middle effective throttle aperture d mean by using the adjusting mechanism 51 according to the actual working condition operation requirement. In this state, the orifice plate 1 has a medium throttle capability. When it is desired to increase or decrease the restriction, the specific value of d mean can be decreased and increased by adjusting the screw depth of the screw connection 51, thereby increasing and decreasing the size of the restriction area of the orifice 11. Therefore, when the unit operates in a slightly severe working condition, the unit can be ensured to have better operation performance through the cooperative adjustment and control function of the orifice plate device and the bypass valve 2.
(3) When the unit is operated under some limiting conditions, such as the maximum load or the high pressure difference, the throttle plate 1 needs to have the maximum throttle capability, as shown in fig. 11 and 12, the threaded connector 51 can be screwed to enable the adjusting member 53 to move down to the bottom of the chute 13 to reach the second position, so that the effective throttle aperture of the throttle hole 11 becomes the minimum throttle aperture d min. In this state, the orifice plate 1 has the maximum throttle capability. When the throttling capacity needs to be continuously increased, the opening degree of the bypass valve 2 can be adjusted according to the throttling area change information of the throttling hole 11 fed back to the bypass valve 2 to continuously increase the throttling capacity so as to meet the higher requirement of the limiting working condition on the throttling capacity of the throttling device. It can be seen that when the unit is operated in the limit condition, the throttle plate 11 is in the state of maximum throttle capability (i.e. the state of minimum flow area), and the auxiliary control function of the bypass valve 2 is combined, so that the unit has better operation performance and higher operation reliability.
As can be seen from the foregoing, the throttling device according to this embodiment is a self-feedback type variable cross-section throttling device, and can implement adjustment of the throttling area of the throttle hole 11 and interaction control between the throttle plate 1 and the bypass valve 2 by means of self-feedback and variable cross-section adjustment, so that the flow adjustment range can be enlarged, the flow control precision can be improved, the fault tolerance of the throttling device can be improved, the throttling device has a better flexible control function, and the control process can be adjusted more flexibly and reliably with a wider range of flow.
In the first embodiment shown in fig. 7-12, the throttle device comprises only one throttle orifice device, but in practice the number of throttle orifice devices in the throttle device is not limited to one, but may also be, for example, two, three or more. When the throttle device comprises at least two throttle orifice devices, the throttle orifice plates 1 of the respective throttle orifice devices can be arranged in series to realize a multi-stage throttle orifice adjusting process, thereby obtaining a wider range of throttle control capability. Also in this case, the throttle control capability can be further improved by feeding back the throttle area information of each of the throttle plates 11 connected in series to each other to the bypass valve 2.
Fig. 13 shows an embodiment in which the restriction device comprises two restriction orifice devices. For simplicity of description, only the differences between the second embodiment and the first embodiment will be mainly described, and the non-described portions will be understood with reference to the first embodiment.
As shown in fig. 13, in this second embodiment, the throttle device includes two throttle plate devices arranged in sequence along the flow direction of the refrigerant from the condenser 3 to the evaporator 4, and the throttle plates 1 of the two throttle plate devices are connected in series with each other to form a two-stage throttle plate throttle control; and the two orifice devices respectively realize the information feedback of the throttle area of the throttle hole 11 between the two feedback loops I and the same bypass valve 2. The throttling device of the second embodiment can better meet the operation requirements of a set with huge refrigerant circulation systems and longer refrigerant pipelines, so that the set can have better throttling effect and effect during operation.
The throttling device is applied to the refrigerant circulation system, so that the performance of the refrigerant circulation system can be effectively improved, and a better refrigerating and heating effect is realized. Therefore, the invention also provides a refrigerant circulation system which comprises a condenser 3, an evaporator 4 and the throttling device, wherein the throttling device is communicated between the condenser 3 and the evaporator 4. In addition, the invention also provides an air conditioner based on the throttling device.
The foregoing description of the exemplary embodiments of the invention is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims (13)

1. The throttling device is characterized by comprising a throttling orifice device, wherein the throttling orifice device comprises a throttling orifice (1) and an adjusting mechanism (5), a throttling orifice (11) is arranged on the throttling orifice (1), and the adjusting mechanism (5) is used for adjusting the throttling area of the throttling orifice (11);
the throttling device further comprises a bypass valve (2) which is arranged in parallel with the throttling orifice plate (1), and the bypass valve (2) and the throttling orifice plate (1) are arranged as follows: the change information of the throttling area of the throttling hole (11) is fed back to the bypass valve (2), and the opening degree of the bypass valve (2) can be adjusted according to the change information of the throttling area of the throttling hole (11);
The throttling device further comprises an information acquisition feedback device, the information acquisition feedback device comprises a displacement detection device, the displacement detection device is used for detecting the displacement of the adjusting piece (53) of the adjusting mechanism (5), and the detected displacement of the adjusting piece (53) is converted into change information of the throttling area of the throttling hole (11) and then fed back to the bypass valve (2).
2. A throttle device according to claim 1, characterized in that the adjusting means (5) comprise an actuating means and an adjusting member (53), the adjusting member (53) being movably arranged relative to the throttle plate (1), the actuating means driving the adjusting member (53) relative to the throttle plate (1) between a first position, in which the adjusting member (53) avoids the throttle orifice (11), and a second position, in which the adjusting member (53) shields at least part of the throttle orifice (11).
3. A throttle device according to claim 2, characterized in that the adjusting member (53) is movably arranged with respect to the throttle plate (1), the actuating mechanism driving the adjusting member (53) between the first position and the second position.
4. A throttle device according to claim 3, characterized in that the throttle plate (1) is provided with a chute (13), the adjusting member (53) being in sliding engagement with the chute (13), the actuating mechanism moving the adjusting member (53) between the first and second positions by driving the adjusting member (53) to slide in the chute (13).
5. The throttle device according to claim 4, characterized in that the length direction of the chute (13) is along the aperture direction of the throttle orifice (11).
6. A throttle device according to claim 3, characterized in that the actuating mechanism is movably connected to the throttle plate (1), which actuating mechanism drives the adjustment member (53) between the first position and the second position by being moved relative to the throttle plate (1).
7. A throttle device according to claim 6, characterized in that the actuating mechanism comprises a threaded connection (51), which threaded connection (51) is screwed onto the throttle plate (1) and is in driving connection with the adjusting member (53), the adjusting member (53) being movable between the first position and the second position by screwing the threaded connection (51).
8. A throttle device according to claim 2, characterized in that the adjusting mechanism (5) further comprises a return element for exerting a force on the adjusting element (53) for moving the adjusting element (53) from the second position to the first position.
9. A throttle device according to claim 1, characterized in that the throttle device comprises at least two throttle orifice devices, the throttle orifice plates (1) of which are arranged in series with each other.
10. A throttle device according to claim 1, characterized in that the displacement detection means detects the displacement of the regulating member (53) by detecting the displacement of the actuating mechanism of the regulating mechanism (5).
11. A throttle device according to claim 1, characterized in that throttle area change information of each throttle plate (1) of the throttle device arranged in series with each other is fed back to the bypass valve (2).
12. A refrigerant circulation system comprising a condenser and an evaporator, and further comprising a throttle device according to any one of claims 1-11, said throttle device being in communication between said condenser and said evaporator.
13. An air conditioner comprising a condenser and an evaporator, and further comprising a throttle device according to any one of claims 1 to 11, wherein the throttle device is in communication between the condenser and the evaporator.
CN201711275692.0A 2017-12-06 2017-12-06 Throttling device, refrigerant circulating system and air conditioner Active CN107806725B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711275692.0A CN107806725B (en) 2017-12-06 2017-12-06 Throttling device, refrigerant circulating system and air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711275692.0A CN107806725B (en) 2017-12-06 2017-12-06 Throttling device, refrigerant circulating system and air conditioner

Publications (2)

Publication Number Publication Date
CN107806725A CN107806725A (en) 2018-03-16
CN107806725B true CN107806725B (en) 2024-04-26

Family

ID=61579378

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711275692.0A Active CN107806725B (en) 2017-12-06 2017-12-06 Throttling device, refrigerant circulating system and air conditioner

Country Status (1)

Country Link
CN (1) CN107806725B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109442822B (en) * 2018-11-28 2023-10-20 宁波奥克斯电气股份有限公司 Throttling device of air conditioning system and control method thereof
CN112113362A (en) * 2020-09-22 2020-12-22 珠海格力电器股份有限公司 Water chilling unit, control method thereof and air conditioning equipment
CN113137680A (en) * 2021-05-28 2021-07-20 爱法科技(无锡)有限公司 Refrigeration and heating equipment with variable evaporation temperature and condensation temperature
CN113124589A (en) * 2021-05-28 2021-07-16 爱法科技(无锡)有限公司 Electronic multi-stage composite matrix type throttle orifice plate

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5227062A (en) * 1991-11-25 1993-07-13 Osmonics, Inc. Adjustable flow control for fluid separation system comprising relatively moveable orifice plates
JP2007155230A (en) * 2005-12-06 2007-06-21 Hitachi Appliances Inc Air conditioner
CN103206817A (en) * 2013-04-19 2013-07-17 重庆美的通用制冷设备有限公司 Adjustable throttling device and air-conditioning system utilizing same
CN203629166U (en) * 2013-12-09 2014-06-04 浙江盾安机电科技有限公司 Pore plate throttling device
CN104456739A (en) * 2014-12-26 2015-03-25 珠海格力电器股份有限公司 Air conditioner system and control method
CN205425550U (en) * 2015-12-21 2016-08-03 重庆美的通用制冷设备有限公司 Refrigerating system and throttling arrangement thereof
CN106225312A (en) * 2016-08-19 2016-12-14 广东美的暖通设备有限公司 Multiple on-line system and pressure release control method thereof
CN106440565A (en) * 2016-11-24 2017-02-22 海信科龙电器股份有限公司 Throttling assembly for air conditioner and air conditioner
CN207527886U (en) * 2017-12-06 2018-06-22 珠海格力电器股份有限公司 Throttling set, coolant circulating system and air-conditioning

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5227062A (en) * 1991-11-25 1993-07-13 Osmonics, Inc. Adjustable flow control for fluid separation system comprising relatively moveable orifice plates
JP2007155230A (en) * 2005-12-06 2007-06-21 Hitachi Appliances Inc Air conditioner
CN103206817A (en) * 2013-04-19 2013-07-17 重庆美的通用制冷设备有限公司 Adjustable throttling device and air-conditioning system utilizing same
CN203629166U (en) * 2013-12-09 2014-06-04 浙江盾安机电科技有限公司 Pore plate throttling device
CN104456739A (en) * 2014-12-26 2015-03-25 珠海格力电器股份有限公司 Air conditioner system and control method
CN205425550U (en) * 2015-12-21 2016-08-03 重庆美的通用制冷设备有限公司 Refrigerating system and throttling arrangement thereof
CN106225312A (en) * 2016-08-19 2016-12-14 广东美的暖通设备有限公司 Multiple on-line system and pressure release control method thereof
CN106440565A (en) * 2016-11-24 2017-02-22 海信科龙电器股份有限公司 Throttling assembly for air conditioner and air conditioner
CN207527886U (en) * 2017-12-06 2018-06-22 珠海格力电器股份有限公司 Throttling set, coolant circulating system and air-conditioning

Also Published As

Publication number Publication date
CN107806725A (en) 2018-03-16

Similar Documents

Publication Publication Date Title
CN107806725B (en) Throttling device, refrigerant circulating system and air conditioner
US8091576B2 (en) By-pass and pressure regulator valve
US4476893A (en) Hydraulic flow control valve
WO2013189120A1 (en) Electronic expansion valve
US4507934A (en) Refrigerating systems having differential valve to control condenser outflow
US4147179A (en) Pressure governor valve equipped with flow control valve
US20200124181A1 (en) Electric valve
CN110630799A (en) Sleeve type valve core for electronic expansion valve of air conditioner
DE60131053T2 (en) Control valve for an adjustable swash plate compressor
CN109442822A (en) A kind of throttling set and its control method of air-conditioning system
EP3594543B1 (en) Electrically-driven flow rate control valve
US20200011452A1 (en) Electrically-driven flow rate control valve
US6745794B2 (en) Flow control valve
US10571156B2 (en) Self-regulating valve for a vapour compression system
CN106482402B (en) Refrigerant control device, heat exchange system and control method of refrigerant control device
CN207527886U (en) Throttling set, coolant circulating system and air-conditioning
US11761695B2 (en) Refrigeration system and throttle control method therefor
CN208858671U (en) A kind of hydraulic flow controller
CN106351901B (en) A kind of constant flow control valve of damping network and two-stage guiding valve composition
CN106322862B (en) Flow control valve and heat exchange system
EP2333460B1 (en) Poppet valve with dual flow area gain
CN210196604U (en) Sleeve type valve core for electronic expansion valve of air conditioner
US6786231B2 (en) Fluid flow regulator with restrictor pin
US3513878A (en) Power transmission
KR100315802B1 (en) Free step rotary compressor

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant