CN116294312A - Modularized expansion device and air conditioning system - Google Patents

Modularized expansion device and air conditioning system Download PDF

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Publication number
CN116294312A
CN116294312A CN202310215612.1A CN202310215612A CN116294312A CN 116294312 A CN116294312 A CN 116294312A CN 202310215612 A CN202310215612 A CN 202310215612A CN 116294312 A CN116294312 A CN 116294312A
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China
Prior art keywords
flow
cavity
control module
flow control
expansion device
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Pending
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CN202310215612.1A
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Chinese (zh)
Inventor
沈皓光
袁正一
张汝京
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Shineraytek Optoelectronics Co ltd
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Shineraytek Optoelectronics Co ltd
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Priority to CN202310215612.1A priority Critical patent/CN116294312A/en
Publication of CN116294312A publication Critical patent/CN116294312A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00Compression machines, plants or systems with non-reversible cycle
    • F25B1/005Compression machines, plants or systems with non-reversible cycle of the single unit type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/20Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/24Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Temperature-Responsive Valves (AREA)

Abstract

The invention provides a modularized expansion device and an air conditioning system, wherein the expansion device comprises an expansion module and a flow control module which are communicated in the axial direction, a hole plate valve is arranged in the expansion module, high-pressure liquid is expanded into low-pressure liquid through the hole plate valve and then enters the flow control module, the flow control module comprises an adjusting plug and a shutoff plate, a circulation gap is formed between a conical sealing plug body of the adjusting plug and a circulation hole of the shutoff plate, and the size of the circulation gap is adjusted by moving the position of the adjusting plug, so that flow adjustment is realized. Meanwhile, the expansion device is also integrated with the check valve so as to realize reverse flow, and when in reverse flow, the check valve is opened by high pressure of high-pressure liquid, and a large amount of liquid reversely flows out from a channel of the check valve without damaging the orifice valve due to the high pressure. All parts of the expansion device are detachably connected, and when the whole device needs maintenance or upgrading optimization, only a single part needs to be replaced, so that the cost of a user is saved, and the expansion device is convenient to recycle.

Description

Modularized expansion device and air conditioning system
Technical Field
The invention relates to the technical field of refrigeration, in particular to a modularized expansion device and an air conditioning system.
Background
One of the most efficient ways to transfer heat from one place to another is to use a phase change refrigeration cycle. In this process, the refrigerant of the low pressure liquid is transferred to the evaporator, where the low pressure liquid absorbs heat and evaporates into a low pressure gas. Next, the compressor sucks this low-pressure gas through an intake duct or a suction duct, compresses it into a high-pressure gas, and then discharges it to a discharge duct. The condenser further receives this high pressure, high temperature gas and flows it into a lower temperature environment where it condenses to a liquid as heat is released, and the high pressure liquid exits the condenser. The high-pressure liquid is continuously connected with an expansion device for adjusting the pressure and flow of the liquid, and is expanded into low-pressure liquid after passing through the expansion device, and the low-pressure liquid enters the evaporator again to realize circulation.
As cooling systems become smaller, more energy efficient, the amount of refrigerant decreases, but the ratio of maximum flow to minimum flow increases. For example, modern vending machines may be optimized to require less energy to maintain a particular internal temperature than older machines, but when the machine is refilled with hot beverage, both the older and modern machines require the same cooling capacity to reduce the temperature of the beverage in the same time. Therefore, the ratio of the maximum power consumption state to the minimum power consumption state of the refrigeration system is continuously increasing. If the system uses a fixed flow expansion device, a significant amount of cost can be saved, but the device cannot adjust the flow according to the needs of the system. Electronic expansion devices can achieve variable flow rates, but are typically costly and it is difficult with current technology to achieve the low flow rates required for efficient cooling. In variable flow expansion devices, a small opening is usually enlarged or contracted by a pneumatic or electromagnetic actuator, the valve is regulated by monitoring the temperature of the gas exiting the evaporator, however in both methods the minimum flow of the lowest cooling power is often much higher than is required for modern high efficiency systems; in addition, pneumatic systems may not be able to regulate flow normally, electromagnetic systems may be problematic because of damage to electrical components from higher temperature liquids; also, these two types of variable flow systems are not designed for reverse flow of fluid, may not handle the high pressures required for reverse flow, and may be damaged as the system changes function.
Modern refrigeration systems are sometimes designed to operate fluid flow cycles in reverse, requiring expansion devices to allow unrestricted fluid flow in the reverse direction. This new need is difficult to achieve for a fixed flow expansion device, and adds additional cost and complexity to a variable flow electronic expansion device. In addition, the existing expansion device is generally integrated, when the user needs change, the replacement or upgrading of the components cannot be performed, the cost is increased, and resource waste is caused.
Disclosure of Invention
In view of the above drawbacks of the prior art, an object of the present invention is to provide a modular expansion device and an air conditioning system, which are used for solving the problems that the flow adjustment of the expansion device is difficult and the reverse flow cannot be realized in the prior art.
To achieve the above and other related objects, the present invention provides a modular expansion device comprising an expansion module and a flow control module in axial communication;
a first cavity is formed in the expansion module, the first cavity is communicated with a first pipeline, a hole plate valve is arranged at one end, close to the flow control module, of the first cavity, and when the flow is forward, high-pressure liquid from the first pipeline expands into low-pressure liquid through the hole plate valve and then enters the flow control module;
a second cavity is formed in the flow control module, an adjusting plug capable of moving along the axial direction is arranged in the second cavity, the adjusting plug is provided with a conical sealing plug body, a shutoff plate perpendicular to the axial direction is fixed on the inner wall of the second cavity, the shutoff plate is provided with a circulation hole concentric with the axial direction, the sealing plug body is inserted into the circulation hole and forms a circulation gap with the circulation hole, and the size of the circulation gap is adjusted by moving the position of the adjusting plug, so that flow adjustment is realized; the second cavity is also communicated with a second pipeline, and during forward flow, low-pressure liquid entering the flow control module flows out of the second pipeline after passing through the circulation gap.
Optionally, an additional module is also included; a third cavity is formed in the additional module, the third cavity comprises a first column section, a first cone section and a second column section which are communicated in the axial direction, the first column section is communicated with the first cavity through a first branch pipe, and the second column section is communicated with the second cavity through a second branch pipe; the inner conical surface of the first conical section and the check plug matched with the inner conical surface form a check valve.
Optionally, the radius of the non-return plug decreases in sequence in the direction of the first column section to the second column section.
Optionally, a spring is arranged between the end face of the check piston close to the first column section and the end face of the first column section far away from the check piston, and the spring is used for providing thrust force for the check piston towards the second column section so as to ensure that the check valve is in a closed state when flowing in the forward direction.
Optionally, the orifice valve comprises a valve hole and an expansion cavity which are communicated along the axial direction, the radius of the expansion cavity is larger than that of the valve hole, and high-pressure liquid enters the expansion cavity through the circulation hole to realize expansion.
The invention also provides another modularized expansion device, which comprises an expansion module and a flow control module which are communicated along the axial direction;
a first cavity is formed in the expansion module, a first pipeline is communicated with the first cavity, one end of the first cavity, which is close to the flow control module, is provided with an inner conical surface, a conical check plug is matched with the inner conical surface to form a check valve, and the radius of the check plug is sequentially reduced along the direction from the expansion module to the flow control module;
an orifice plate flow passage penetrating along the axial direction is arranged in the check plug, and the radius of the end part of the orifice plate flow passage far away from the flow control module is smaller than the radius of the end part of the flow passage close to the flow control module; during forward flow, high-pressure liquid from the first pipeline expands into low-pressure liquid through the orifice plate flow passage and then enters the flow control module.
Optionally, a second cavity is formed in the flow control module, an adjusting plug capable of moving along the axial direction is arranged in the second cavity, the adjusting plug is provided with a conical sealing plug body, a shutoff plate perpendicular to the axial direction is fixed on the inner wall of the second cavity, the shutoff plate is provided with a flow hole concentric with the axial direction, the sealing plug body is inserted into the flow hole and forms a flow gap with the flow hole, and the size of the flow gap is adjusted by moving the position of the adjusting plug, so that flow adjustment is achieved.
Optionally, the second cavity is communicated with a second pipeline, and during forward flow, the low-pressure liquid entering the flow control module flows out of the second pipeline after passing through the circulation gap.
Optionally, a spring is disposed between the check plug and an end surface of the first cavity, and the spring is configured to provide a pushing force to the check plug toward the flow control module, so as to ensure that the check valve is in a closed state when flowing in a forward direction.
The invention also provides an air conditioning system comprising a modular expansion device as described above.
As described above, the present invention provides a modular expansion device and an air conditioning system, where the expansion device includes an expansion module and a flow control module that are axially connected, a hole plate valve is disposed in the expansion module, high-pressure liquid is expanded into low-pressure liquid by the hole plate valve and then enters the flow control module, the flow control module includes an adjusting plug and a shutoff plate, a circulation gap is formed between a tapered sealing plug body of the adjusting plug and a circulation hole of the shutoff plate, and the flow adjustment is achieved by moving a position of the adjusting plug to adjust a size of the circulation gap. Meanwhile, the expansion device is also integrated with the check valve so as to realize reverse flow, and when in reverse flow, the check valve is opened by high pressure of high-pressure liquid, and a large amount of liquid reversely flows out from a channel of the check valve without damaging the orifice valve due to the high pressure. The check valve, the orifice valve, the adjusting plug, the shutoff plate and other parts of the expansion device are all detachably connected so as to be convenient to replace, and when the whole device needs maintenance or upgrading optimization, only a single part needs to be replaced, so that modularization is realized, and the cost of a user is saved; and the method is convenient for recycling, reduces the influence on the resource environment, and realizes sustainable development.
Drawings
Fig. 1 shows a schematic diagram of a refrigeration cycle.
Fig. 2 shows a schematic forward flow of liquid with a check valve and orifice valve of the expansion device of the present invention connected in parallel.
Fig. 3 shows a schematic diagram of the reverse flow of liquid with the check valve and orifice valve of the expansion device of the present invention connected in parallel.
Fig. 4 shows a schematic view of the forward flow of liquid integrated into a check plug for the orifice valve of the expansion device of the present invention.
Fig. 5 shows a schematic diagram of the reverse flow of liquid with the orifice valve of the expansion device of the present invention integrated into the check plug.
Description of element reference numerals
11. Expansion module
21. Flow control module
31. Additional module
101. First pipeline
111. Valve hole
112. Expansion cavity
110. Hole plate valve
201. Second pipeline
210. Adjusting plug
211. Sealing plug body
213. Closure plate
214. Flow gap
301. First branch pipe
302. Second branch pipe
311. Check plug
312. Spring
313. Orifice plate flow channel
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention.
As described in detail in the embodiments of the present invention, the cross-sectional view of the device structure is not partially enlarged to a general scale for convenience of explanation, and the schematic drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
For ease of description, spatially relative terms such as "under", "below", "beneath", "above", "upper" and the like may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that these spatially relative terms are intended to encompass other orientations of the device in use or operation in addition to the orientation depicted in the figures. Furthermore, when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or one or more intervening layers may also be present. As used herein, "between … …" is meant to include both endpoints.
In the context of this application, a structure described as a first feature being "on" a second feature may include embodiments where the first and second features are formed in direct contact, as well as embodiments where additional features are formed between the first and second features, such that the first and second features may not be in direct contact.
It should be noted that, the illustrations provided in the present embodiment merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of each component in actual implementation may be changed at will, and the layout of the components may be more complex.
Example 1
As shown in fig. 1-2, the present embodiment provides a modular expansion device comprising an expansion module 11 and a flow control module 21 in axial communication;
the expansion module 11 is internally provided with a first cavity, the first cavity is communicated with a first pipeline 101, one end of the first cavity, which is close to the flow control module 21, is provided with a hole plate valve 110, and high-pressure liquid from the first pipeline 101 enters the flow control module 21 after being expanded into low-pressure liquid through the hole plate valve 110.
The flow control module 21 is internally provided with a second cavity, an adjusting plug 210 capable of moving along the axial direction is arranged in the second cavity, the adjusting plug 210 is provided with a conical sealing plug body 211, the inner wall of the second cavity is fixedly provided with a shutoff plate 213 perpendicular to the axial direction, the shutoff plate 213 is provided with a flow hole concentric with the axial direction, the sealing plug body 211 is inserted into the flow hole and forms a flow gap 214 with the flow hole, and the size of the flow gap 214 is adjusted by moving the position of the adjusting plug 210, so that flow adjustment is realized.
The second cavity is communicated with a second pipeline 201, and the low-pressure liquid entering the flow control module 21 flows out of the second pipeline 201 after passing through the circulation gap 214.
Further, the device further comprises an additional module 31, a third cavity is formed in the additional module 31, the third cavity comprises a first column section, a first cone section and a second column section which are communicated in the axial direction, the first column section is communicated with the first cavity through a first branch pipe 301, the second column section is communicated with the second cavity through a second branch pipe 302, and an inner conical surface of the first cone section and a check plug 311 matched with the inner conical surface form a check valve.
Specifically, along the direction from the first column section to the second column section, the radius of the check piston 311 is sequentially reduced, a spring 312 is arranged between the end surface of the check piston 311 close to the first column section and the end surface of the first column section far away from the check piston 311, and the spring 312 is used for providing thrust force for the check piston 311 towards the second column section, so that the check piston 311 clings to the inner conical surface when forward flowing is ensured, and the check valve is in a closed state.
Further, the orifice valve 110 includes a valve hole 111 and an expansion chamber 112 that are axially communicated, the radius of the expansion chamber 112 is larger than that of the valve hole 111, and high-pressure liquid enters the expansion chamber 112 through the flow hole to realize expansion. The orifice valve 110 is in sealing contact with the first chamber.
Further, the first pipe 101 is disposed along an axial direction, and the second pipe 201 is disposed perpendicular to the axial direction. The first branch pipe 301 and the second branch pipe 302 are each disposed perpendicularly to the axial direction.
Specifically, as shown in fig. 1, in the forward flow, the high-pressure liquid from the first pipeline 101 expands into the low-pressure liquid through the orifice valve 110 and then enters the flow control module 21, and on the other hand enters the first column section through the first branch pipe 301, and the pressure of the high-pressure liquid pushes the check valve to be in a closed state, so that the liquid is ensured to enter the flow control module 21 only through the orifice valve 110. The adjusting plug 210 of the flow control module 21 is axially movable to adjust the size of the flow gap 214 and thus the flow of liquid out of the second conduit 201. When the regulating plug 210 moves rightward, the flow gap 214 increases, and the flow rate increases; when the regulator plug 210 moves to the left, the flow gap 214 decreases and the flow decreases. Wherein the movement of the adjusting plug 210 can be adjusted by a stepper motor. All modules and components of the expansion device are detachably connected, so that the expansion device is convenient to replace. In particular, orifice valve 110 can be replaced as desired by the user without having to replace the entire flow control system, thereby achieving modularity.
In the reverse flow, as shown in fig. 2, the high-pressure liquid from the second pipeline 201 is first pumped out by the flow control module 21 and the sealing plug 211, and the flow hole is fully opened. Further, the high-pressure liquid in the flow control module 21 is poured into the additional module 31 in a large amount through the second branch, the check valve is opened by the high pressure, and the liquid enters the first pipeline 101 through the first branch and the first cavity, so that the reverse flow is realized. At the same time, there is also a small amount of fluid flowing back through the orifice valve 110 into the first cavity through the orifice valve 110, because the amount of fluid flowing back into the orifice valve 110 is small, the pressure on both sides of the orifice valve 110 is nearly the same, and no damage is caused to the orifice valve 110 due to the high pressure.
Example two
The present embodiment also provides a modularized expansion device, which is different from the expansion device in the first embodiment in that the orifice valve and the check valve in the first embodiment are respectively arranged in the expansion module and the additional module, and can be regarded as a parallel connection relationship; in this embodiment, the orifice valve is integrated into the check plug of the check valve and both are disposed within the expansion module.
Specifically, as shown in fig. 3-4, the expansion device comprises an expansion module 11 and a flow control module 21 which are communicated along the axial direction; a first cavity is formed in the expansion module 11, the first cavity is communicated with a first pipeline 101, one end of the first cavity, which is close to the flow control module 21, is provided with an inner conical surface, a conical check plug 311 is matched with the inner conical surface to form a check valve, and the radius of the check plug 311 is sequentially reduced along the direction from the expansion module 11 to the flow control module 21;
the inside of the check plug 311 is provided with an orifice flow passage 313 penetrating along the axial direction, the radius of the end of the orifice flow passage 313 far away from the flow control module 21 is smaller than the radius of the end of the flow passage near the flow control module 21, so that an orifice valve is integrated inside the check plug 311, and the orifice flow passage 313 corresponds to the combination of the valve hole 111 and the expansion cavity 112 in the first embodiment. The high-pressure liquid from the first pipeline 101 expands into low-pressure liquid through the orifice flow passage 313 and then enters the flow control module 21.
Further, a second cavity is formed in the flow control module 21, an adjusting plug 210 capable of moving along an axial direction is disposed in the second cavity, the adjusting plug 210 is provided with a tapered sealing plug body 211, a shutoff plate 213 perpendicular to the axial direction is fixed on an inner wall of the second cavity, the shutoff plate 213 is provided with a flow hole concentric with the axial direction, the sealing plug body 211 is inserted into the flow hole and forms a flow gap 214 with the flow hole, and the size of the flow gap 214 is adjusted by moving the position of the adjusting plug 210, so that flow adjustment is achieved.
The second cavity is communicated with a second pipeline 201, and the low-pressure liquid entering the flow control module 21 flows out of the second pipeline 201 after passing through the circulation gap 214.
Further, a spring 312 is disposed between the check plug 311 and the end surface of the first cavity, and the spring 312 is configured to provide a pushing force to the check plug 311 toward the flow control module 21, so as to ensure that the check valve is in a closed state during a forward flow.
Specifically, as shown in fig. 3, in the forward flow, the holding check valve of the high-pressure liquid from the first pipe 101 is closed, and the high-pressure liquid is expanded to a low-pressure liquid only through the orifice flow passage 313 in the check plug 311, and then enters the flow control module 21. The adjusting plug 210 of the flow control module 21 is axially movable to adjust the size of the flow gap 214 and thus the flow of liquid out of the second conduit 201. When the regulating plug 210 moves rightward, the flow gap 214 increases, and the flow rate increases; when the regulator plug 210 moves to the left, the flow gap 214 decreases and the flow decreases. Wherein the movement of the adjusting plug 210 can be adjusted by a stepper motor. All modules and components of the expansion device are detachably connected, so that the expansion device is convenient to replace. In particular, the check plug 311 can be replaced according to the user's needs without replacing the entire flow control system, thereby achieving modularization.
In the reverse flow, as shown in fig. 4, the high pressure from the second pipe 201 is first discharged through the flow control module 21, the seal plug 211, and the flow hole is fully opened. Further, the check valve is opened by the high-pressure liquid in the flow control module 21, and the liquid enters the first cavity and the first pipeline through the gap between the check plug 311 and the inner conical surface, so that the reverse flow is realized. At the same time, a small amount of fluid flows reversely through the orifice plate flow channel 313 into the first cavity, because the amount of liquid reversely entering the orifice plate flow channel 313 is small, the pressures at the two ends of the orifice plate flow channel 313 are almost the same, and the high pressure is not damaged.
In summary, the present invention provides a modularized expansion device and an air conditioning system, where the expansion device includes an expansion module and a flow control module that are axially connected, a hole plate valve is disposed in the expansion module, high-pressure liquid is expanded into low-pressure liquid by the hole plate valve and then enters the flow control module, the flow control module includes an adjusting plug and a shutoff plate, a circulation gap is formed between a tapered sealing plug body of the adjusting plug and a circulation hole of the shutoff plate, and the size of the circulation gap is adjusted by moving the position of the adjusting plug, so as to realize flow adjustment. Meanwhile, the expansion device is also integrated with the check valve so as to realize reverse flow, and when in reverse flow, the check valve is opened by high pressure of high-pressure liquid, and a large amount of liquid reversely flows out from a channel of the check valve without damaging the orifice valve due to the high pressure. The check valve, the orifice valve, the adjusting plug, the shutoff plate and other parts of the expansion device are all detachably connected so as to be convenient to replace, and when the whole device needs maintenance or upgrading optimization, only a single part needs to be replaced, so that modularization is realized, and the cost of a user is saved; and the method is convenient for recycling, reduces the influence on the resource environment, and realizes sustainable development.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (10)

1. A modular expansion device, comprising an expansion module and a flow control module in axial communication;
a first cavity is formed in the expansion module, the first cavity is communicated with a first pipeline, a hole plate valve is arranged at one end, close to the flow control module, of the first cavity, and when the flow is forward, high-pressure liquid from the first pipeline expands into low-pressure liquid through the hole plate valve and then enters the flow control module;
a second cavity is formed in the flow control module, an adjusting plug capable of moving along the axial direction is arranged in the second cavity, the adjusting plug is provided with a conical sealing plug body, a shutoff plate perpendicular to the axial direction is fixed on the inner wall of the second cavity, the shutoff plate is provided with a circulation hole concentric with the axial direction, the sealing plug body is inserted into the circulation hole and forms a circulation gap with the circulation hole, and the size of the circulation gap is adjusted by moving the position of the adjusting plug, so that flow adjustment is realized; the second cavity is also communicated with a second pipeline, and during forward flow, low-pressure liquid entering the flow control module flows out of the second pipeline after passing through the circulation gap.
2. The modular expansion device of claim 1, further comprising an additional module; a third cavity is formed in the additional module, the third cavity comprises a first column section, a first cone section and a second column section which are communicated in the axial direction, the first column section is communicated with the first cavity through a first branch pipe, and the second column section is communicated with the second cavity through a second branch pipe; the inner conical surface of the first conical section and the check plug matched with the inner conical surface form a check valve.
3. The modular expansion device of claim 2, wherein the radius of the non-return plug decreases in sequence in the direction of the first column section to the second column section.
4. A modular expansion device as claimed in claim 2, wherein a spring is provided between the end face of the first leg adjacent the first leg and the end face of the first leg remote from the first leg, the spring being arranged to provide a pushing force to the second leg towards the second leg to ensure that the check valve is in a closed condition when flowing in a forward direction.
5. The modular expansion device of claim 1, wherein the orifice valve includes an axially communicating valve bore and an expansion chamber, the expansion chamber having a radius greater than the radius of the valve bore, and wherein high pressure fluid enters the expansion chamber through the flow bore to effect expansion.
6. A modular expansion device, comprising an expansion module and a flow control module in axial communication;
a first cavity is formed in the expansion module, a first pipeline is communicated with the first cavity, one end of the first cavity, which is close to the flow control module, is provided with an inner conical surface, a conical check plug is matched with the inner conical surface to form a check valve, and the radius of the check plug is sequentially reduced along the direction from the expansion module to the flow control module;
an orifice plate flow passage penetrating along the axial direction is arranged in the check plug, and the radius of the end part of the orifice plate flow passage far away from the flow control module is smaller than the radius of the end part of the flow passage close to the flow control module; during forward flow, high-pressure liquid from the first pipeline expands into low-pressure liquid through the orifice plate flow passage and then enters the flow control module.
7. The modular expansion device of claim 6, wherein a second cavity is formed in the flow control module, an adjusting plug capable of moving along the axial direction is arranged in the second cavity, the adjusting plug is provided with a conical sealing plug body, a shutoff plate perpendicular to the axial direction is fixed on the inner wall of the second cavity, the shutoff plate is provided with a flow hole concentric with the axial direction, a flow gap is formed between the sealing plug body and the flow hole, and the flow adjustment is realized by moving the position of the adjusting plug to adjust the size of the flow gap.
8. The modular expansion device of claim 7, wherein the second chamber is in communication with a second conduit, and wherein the low pressure fluid entering the flow control module flows out of the second conduit through the flow gap during forward flow.
9. The modular expansion device of claim 6, wherein a spring is disposed between the check plug and an end face of the first chamber to provide a pushing force to the check plug toward the flow control module to ensure that the check valve is in a closed state when flowing in a forward direction.
10. An air conditioning system comprising a modular expansion device according to any of claims 1-9.
CN202310215612.1A 2023-03-08 2023-03-08 Modularized expansion device and air conditioning system Pending CN116294312A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310215612.1A CN116294312A (en) 2023-03-08 2023-03-08 Modularized expansion device and air conditioning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310215612.1A CN116294312A (en) 2023-03-08 2023-03-08 Modularized expansion device and air conditioning system

Publications (1)

Publication Number Publication Date
CN116294312A true CN116294312A (en) 2023-06-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310215612.1A Pending CN116294312A (en) 2023-03-08 2023-03-08 Modularized expansion device and air conditioning system

Country Status (1)

Country Link
CN (1) CN116294312A (en)

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