Refrigeration system and air conditioner

Abstract

The present disclosure relates to a refrigeration system and an air conditioner. The refrigeration system comprises: a compressor comprising an outlet, an inlet and a variable displacement port, the compressor having a first displacement and a second displacement; and a control valve comprising a first interface, a second interface and a third interface, the first interface being in communication with the outlet, the second interface being in communication with the inlet, and the third interface being in communication with the variable displacement port; the control valve is configured to operatively communicate the first interface with the third interface to enable the compressor to operate at the first displacement, or to operatively communicate the second interface with the third interface to enable the compressor to operate at the second displacement. The control valve is configured to operatively switch the flow path connection state to enable the compressor to switch operation between the first displacement and the second displacement, thereby simplifying the structure and reducing the complexity of the system; and the displacement adjustment of the compressor is realized through the switching action of the control valve, thereby avoiding the risk of misoperation caused by the coordinated control of multiple components and improving the stability and reliability of the system operation.

Description

Technical Field

[0001] This disclosure relates to the field of refrigeration technology, and in particular to a refrigeration system and an air conditioner. Background Technology

[0002] To reduce the power consumption of air conditioners, variable frequency and variable capacity compressors have emerged. These compressors can switch between single-cylinder and dual-cylinder operation based on system demand calculations. In single-cylinder operation, only one cylinder actually operates, reducing the volume of refrigerant compressed and thus reducing energy consumption. When the system demands higher output, the compressor switches to dual-cylinder operation to ensure sufficient capacity. Air conditioning units equipped with variable frequency and variable capacity compressors can adjust their output capacity and compressor operation (single or dual-cylinder) according to actual conditions, significantly reducing power output and achieving energy-saving operation compared to air conditioners with conventional compressors. Summary of the Invention

[0003] Some embodiments of this disclosure provide a refrigeration system and air conditioner with a simpler and more compact structure, higher reliability, and lower cost.

[0004] In one aspect of this disclosure, a refrigeration system is provided, comprising:

[0005] A compressor, including an outlet, an inlet, and a variable-capacity port, the compressor having a first displacement and a second displacement; and

[0006] A control valve includes a first port, a second port, and a third port, wherein the first port is connected to the outlet, the second port is connected to the inlet, and the third port is connected to the variable displacement port; the control valve is configured to operablely connect the first port to the third port to cause the compressor to operate at the first displacement, or to operablely connect the second port to the third port to cause the compressor to operate at the second displacement.

[0007] In some embodiments, the control valve further includes:

[0008] A housing having the first interface, the second interface, and the third interface disposed thereon;

[0009] The valve core is rotatably disposed within the housing; and

[0010] A connector is disposed on the valve core, the connector being configured to rotate with the valve core to connect the first interface and the third interface, or to connect the second interface and the third interface.

[0011] In some embodiments, the control valve further includes:

[0012] A first magnetic attractor is disposed on the valve core, and the first magnetic attractor is configured to move under the action of magnetic force to drive the valve core to rotate; and

[0013] The second and third magnetic attractors are disposed on the housing;

[0014] Wherein, the first magnetic attractant and the second magnetic attractant are attracted to each other, and the first interface is connected to the third interface; the first magnetic attractant and the third magnetic attractant are attracted to each other, and the second interface is connected to the third interface.

[0015] In some embodiments, the first magnetic attractor, the second magnetic attractor, and the third magnetic attractor are arranged circumferentially around the valve core.

[0016] In some embodiments, the control valve further includes:

[0017] A first elastic element connects the first magnetic element and the second magnetic element; and

[0018] The second elastic element connects the first magnetic element and the third magnetic element.

[0019] In some embodiments, the first interface, the second interface, and the third interface are arranged sequentially along the circumference of the valve core, and the connector is further configured to rotate with the valve core to connect the first interface and the second interface.

[0020] In some embodiments, the control valve further includes:

[0021] The fourth magnetic attractor is located between the second magnetic attractor and the third magnetic attractor, and above the first magnetic attractor. The first magnetic attractor is attracted to the fourth magnetic attractor, and the first interface is connected to the second interface.

[0022] In some embodiments, the refrigeration system further includes:

[0023] The controller is electrically connected to the second magnetic attractor, the third magnetic attractor, and the fourth magnetic attractor. The controller is configured to control one of the second magnetic attractor, the third magnetic attractor, and the fourth magnetic attractor to be energized to generate magnetism, and when controlling the second magnetic attractor and the third magnetic attractor to switch their energized states, the controller first controls the fourth magnetic attractor to be energized.

[0024] In some embodiments, the compressor further includes a first cylinder and a second cylinder, wherein the first cylinder and the second cylinder are configured to be in a working state simultaneously, and the displacement of the compressor is the first displacement; wherein the first cylinder is configured to be in a non-working state and the second cylinder is configured to be in a working state, and the displacement of the compressor is the second displacement.

[0025] In some embodiments, the first cylinder is provided with a sliding plate and a locking hole. The locking hole communicates with the variable displacement port. A locking member is inserted through the locking hole. The locking member is configured to extend into the first cylinder and fix the sliding plate when the second interface is connected to the third interface. The locking member is also configured to move away from the first cylinder when the first interface is connected to the third interface, thereby releasing the fixation of the locking member.

[0026] In some embodiments, the refrigeration system further includes a controller electrically connected to the control valve, the controller being configured to control the first interface to connect to the second interface when the refrigeration system is first turned on.

[0027] In some embodiments, the controller is further configured to control the first interface to connect to the third interface when the first interface and the second interface have been connected for a preset time.

[0028] In some embodiments, the controller is further configured to, after the first interface and the third interface are connected, control the second interface to connect to the third interface based on detection information, or control the first interface to remain connected to the third interface.

[0029] In one aspect of this disclosure, an air conditioner is provided, which includes the refrigeration system described above.

[0030] Based on the above technical solution, this disclosure has at least the following beneficial effects:

[0031] In some embodiments, the control valve is configured to operably switch the flow path connection state so that the compressor can switch between a first displacement and a second displacement. Therefore, the refrigeration system can achieve the switching of the compressor between different displacements simply by setting the control valve, which simplifies the structure and reduces the complexity of the system. Furthermore, by using the switching action of the control valve to adjust the compressor displacement, the risk of malfunction caused by multi-component coordinated control can be avoided, and the stability, reliability and response speed of the system operation can be improved. Attached Figure Description

[0032] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this disclosure, illustrate exemplary embodiments of the present disclosure and are used to explain the disclosure, but do not constitute an undue limitation of the disclosure. In the drawings:

[0033] Figure 1 This is a schematic diagram of a refrigeration system provided according to some embodiments of the present disclosure;

[0034] Figure 2This is a schematic diagram of a control valve provided according to some embodiments of the present disclosure;

[0035] Figure 3 This is a top view schematic diagram of a control valve provided according to some embodiments of the present disclosure;

[0036] Figure 4 This is a schematic diagram showing the arrangement of magnetic elements within a control valve according to some embodiments of the present disclosure;

[0037] Figure 5 This is a top view schematic diagram showing the arrangement of magnetic elements within a control valve according to some embodiments of the present disclosure;

[0038] Figure 6 This is a schematic diagram of a first state of a first cylinder provided according to some embodiments of the present disclosure;

[0039] Figure 7 This is a schematic diagram of a second state of a first cylinder provided according to some embodiments of the present disclosure;

[0040] Figure 8 This is a schematic diagram of the control flow of a refrigeration system provided according to some embodiments of the present disclosure.

[0041] The labels in the attached diagram are explained as follows:

[0042] 1-Compressor; 101-Outlet; 102-Inlet; 103-Variable Capacity Port; 11-First Cylinder; 12-Sliding Vane; 13-Locking Component; 14-Shaft;

[0043] 2-Control valve; 201-First interface; 202-Second interface; 203-Third interface; 204-Signal line; 205-Terminal; 21-Housing; 22-Valve core; 23-Connector; 24-First magnetic clasp; 25-Second magnetic clasp; 26-Third magnetic clasp; 27-Fourth magnetic clasp; 28-First elastic element; 29-Second elastic element;

[0044] 3-Oil separator; 4-Heat exchanger; 5-Gas-liquid separator.

[0045] It should be understood that the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Furthermore, the same or similar reference numerals denote the same or similar components. Detailed Implementation

[0046] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the present disclosure or its application or use. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that the present disclosure will be thorough and complete, and will fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless specifically stated otherwise, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0047] The terms "first," "second," and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "above," "below," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0048] In this disclosure, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may be not directly connected to the other devices but have an intermediary device.

[0049] All terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0050] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0051] Figure 1 This is a schematic diagram of the structure of some embodiments of the refrigeration system according to this disclosure. (Reference) Figure 1 In some embodiments, the refrigeration system includes a compressor 1 and a control valve 2.

[0052] The compressor 1 includes an outlet 101, an inlet 102 and a variable capacity port 103, and the compressor 1 has a first displacement and a second displacement.

[0053] The control valve 2 includes a first port 201, a second port 202, and a third port 203. The first port 201 is connected to the outlet 101, the second port 202 is connected to the inlet 102, and the third port 203 is connected to the variable displacement port 103. The control valve 2 is configured to operablely connect the first port 201 to the third port 203 to make the compressor 1 operate at a first displacement, or to operablely connect the second port 202 to the third port 203 to make the compressor 1 operate at a second displacement.

[0054] In the above embodiments, the refrigeration system can flexibly switch the operation of compressor 1 between the first displacement and the second displacement according to the actual load demand, thereby adjusting the effective volume and output capacity of the compressor working chamber to adapt to different refrigeration needs. Therefore, it can achieve the purpose of reducing energy consumption and improving the system energy efficiency ratio.

[0055] In the above embodiment, the control valve 2 is configured to operablely switch the flow path connection state so that the compressor 1 can switch between the first displacement and the second displacement. Therefore, the refrigeration system can realize the switching of the compressor 1 between different displacements by simply setting the control valve 2, which simplifies the structure, eliminates multiple solenoid valves, pipelines and control devices, and significantly reduces the complexity of the system. Furthermore, by realizing the displacement adjustment of the compressor 1 through the switching action of the control valve 2, the risk of malfunction caused by the coordinated control of multiple components can be avoided, and the stability, reliability and response speed of the system operation can be improved.

[0056] refer to Figure 2 and Figure 3 In some embodiments, the control valve 2 further includes a housing 21, a valve core 22, and a connector 23.

[0057] The housing 21 is provided with a first interface 201, a second interface 202 and a third interface 203.

[0058] The valve core 22 is rotatably disposed within the housing 21.

[0059] The connector 23 is disposed on the valve core 22 and is configured to rotate with the valve core 22 to connect the first interface 201 and the third interface 203, or to connect the second interface 202 and the third interface 203.

[0060] In the above embodiments, the valve core 22 is rotatably disposed inside the housing 21, and the flow channel is switched by rotation, which makes the operation smooth and the switching response fast, improving the flexibility and reliability of control; and the connector 23 rotates synchronously with the valve core 22 and selectively connects different interfaces, which improves the accuracy of interface switching, reduces the risk of misconnection or leakage, and improves the control accuracy of the system.

[0061] In some embodiments, compressor 1 includes a variable frequency variable capacity compressor.

[0062] In some embodiments, control valve 2 includes a three-way valve.

[0063] refer to Figures 3 to 5 In some embodiments, the control valve 2 further includes a first magnetic 24, a second magnetic 25, and a third magnetic 26.

[0064] The first magnetic attractor 24 is disposed on the valve core 22. The first magnetic attractor 24 is configured to move under the action of magnetic attraction to drive the valve core 22 to rotate.

[0065] The second magnetic attractor 25 and the third magnetic attractor 26 are disposed on the housing 21.

[0066] Among them, the first magnetic clasp 24 and the second magnetic clasp 25 are attracted to each other, and the first interface 201 is connected to the third interface 203; the first magnetic clasp 24 and the third magnetic clasp 26 are attracted to each other, and the second interface 202 is connected to the third interface 203.

[0067] In the above embodiments, the first magnetic attractor 24 is disposed on the valve core 22 and is a movable component. The second magnetic attractor 25 and the third magnetic attractor 26 are disposed on the housing 21 and are immovable. The first magnetic attractor 24 attracts the second magnetic attractor 25. The first magnetic attractor 24 moves toward the second magnetic attractor 25, causing the valve core 22 to rotate so that the first interface 201 and the third interface 203 are connected. The first magnetic attractor 24 attracts the third magnetic attractor 26. The first magnetic attractor 24 moves toward the third magnetic attractor 26, causing the valve core 22 to rotate so that the second interface 202 and the third interface 203 are connected.

[0068] In the above embodiments, the first magnetic attractor 24 is disposed on the valve core 22, so that the first magnetic attractor 24 can be displaced under the action of magnetic attraction and drive the valve core 22 to rotate, realizing non-contact drive and improving response speed and reliability; the second magnetic attractor 25 and the third magnetic attractor 26 are fixedly disposed on the housing 21 to provide a stable adsorption point, ensuring accurate positioning of the valve core 22 at different positions, avoiding malfunctions and improving control accuracy; the first magnetic attractor 24 and the second magnetic attractor 25 attract each other, driving the valve core 22 to rotate to connect the first interface 201 and the third interface 203, realizing stable operation of the compressor 1 in high displacement mode, adapting to high load conditions and improving system energy efficiency; the first magnetic attractor 24 and the third magnetic attractor 26 attract each other, driving the valve core 22 to rotate to connect the second interface 202 and the third interface 203, realizing the switching of the compressor 1 in low displacement mode, meeting the cooling needs of small loads.

[0069] In the above embodiments, the reasonable arrangement of each magnetic component enables the valve core 22 to switch stably between two preset positions, improving the accuracy and repeatability of the interface conduction state, and increasing the service life of the control valve 2 and the stability of system operation. Furthermore, by using magnetic force to drive the valve core 22 to rotate, the positioning of the valve core 22 and the flow channel switching can be completed, realizing the automatic switching between different displacements of the compressor. The structure is simple, the response is rapid, and the control is reliable.

[0070] In some embodiments, the first magnetic member 24, the second magnetic member 25, and the third magnetic member 26 are arranged circumferentially around the valve core 22.

[0071] In the above embodiments, by rationally arranging multiple magnetic components around the valve core 22, not only is the uniformity and response efficiency of the magnetic drive optimized, but the stability and positioning reliability of the valve core 22 rotating between different switching positions are also enhanced, thereby improving the overall operating performance and structural compactness of the control valve.

[0072] In some embodiments, the first magnetic attractor 24, the second magnetic attractor 25 and the third magnetic attractor 26 are evenly spaced along the circumference of the valve core 22.

[0073] In some embodiments, the first magnetic attractor 24, the second magnetic attractor 25 and the third magnetic attractor 26 generate magnetic attraction when energized, and the magnetic attraction disappears when energized.

[0074] In some embodiments, the first magnetic attractor 24, the second magnetic attractor 25, and the third magnetic attractor 26 may each include an electromagnetic coil and an iron core.

[0075] In some embodiments, the valve core 22 is configured as a cylinder.

[0076] In some embodiments, the control valve 2 further includes a first elastic element 28 and a second elastic element 29.

[0077] The first elastic element 28 connects the first magnetic element 24 and the second magnetic element 25.

[0078] The second elastic element 29 connects the first magnetic element 24 and the third magnetic element 26.

[0079] In the above embodiment, by setting the first elastic element 28 and the second elastic element 29, after the magnetic attraction force on the magnetic attractor disappears, the first elastic element 28 and the second elastic element 29 can provide a reliable reset driving force for the first magnetic attractor 24, causing it to automatically return to its initial position and drive the valve core 22 to return to its initial state, thereby realizing the stable switching of the control valve 2 between different flow channel connection modes. This structure not only improves the stability and response speed of the control valve 2's operation, but also avoids the problem of valve core 22 jamming due to external drive failure, enhancing the system's self-reset capability and operational reliability.

[0080] In some embodiments, the first elastic element 28 includes a spring. The second elastic element 29 includes a spring.

[0081] In some embodiments, the first interface 201, the second interface 202 and the third interface 203 are arranged sequentially along the circumference of the valve core 22, and the connector 23 is also configured to rotate with the valve core 22 to connect the first interface 201 and the second interface 202.

[0082] In the above embodiment, each interface is arranged sequentially along the circumference of the valve core 22. With the linkage mechanism of the connector 23 rotating with the valve core 22, the smooth transition and reliable conduction of the control valve 2 between multiple working states are realized. The structure is simplified, the assembly efficiency is improved, and the repeatability and error prevention capability of the control valve 2 are enhanced, which helps to improve the stability and energy efficiency of the refrigeration system.

[0083] refer to Figure 4 and Figure 5 In some embodiments, the control valve 2 further includes a fourth magnetic element 27.

[0084] The fourth magnetic attractor 27 is located between the second magnetic attractor 25 and the third magnetic attractor 26, and is located above the first magnetic attractor 24. The first magnetic attractor 24 and the fourth magnetic attractor 27 attract each other, and the first interface 201 is connected to the second interface 202.

[0085] In the above embodiment, in the initial state of the control valve 2, the first magnetic attractor 24 is located below the fourth magnetic attractor 27. When the fourth magnetic attractor 27 is energized and generates magnetism, the first magnetic attractor 24 and the fourth magnetic attractor 27 attract each other, fixing the position of the valve core 22 and connecting the first interface 201 and the second interface 202.

[0086] In the above embodiment, by setting a fourth magnetic attractor 27 above the first magnetic attractor 24, and generating an adsorption effect on the first magnetic attractor 24 when the fourth magnetic attractor 27 is energized, the active locking of the valve core 22 position is achieved; this structure enhances the positioning accuracy of the valve core 22 in the initial state and enables stable communication between the first interface 201 and the second interface 202.

[0087] In some embodiments, the first interface 201, the second interface 202, and the third interface 203 are arranged at uniform intervals along the circumference of the valve core 22.

[0088] In some embodiments, the connector 23 is configured as an arc-shaped bend. The included angle α between the two outlet axes of the connector 23 is 120°.

[0089] In some embodiments, the refrigeration system further includes a controller.

[0090] The controller is electrically connected to the second magnetic 25, the third magnetic 26 and the fourth magnetic 27. The controller is configured to control one of the second magnetic 25, the third magnetic 26 and the fourth magnetic 27 to be energized to generate magnetism, and when controlling the second magnetic 25 and the third magnetic 26 to switch between energized states, the controller first controls the fourth magnetic 27 to be energized.

[0091] In the above embodiments, the first magnetic attractor 24 can be in a normally energized form.

[0092] When it is necessary to de-energize the second magnetic attractor 25 and energize the third magnetic attractor 26, first de-energize the second magnetic attractor 25, then energize the fourth magnetic attractor 27, so that the first magnetic attractor 24 and the fourth magnetic attractor 27 attract each other, causing the valve core 22 to rotate to the reset position (initial position). Then, de-energize the fourth magnetic attractor 27 and energize the third magnetic attractor 26, so that the first magnetic attractor 24 and the third magnetic attractor 26 attract each other, causing the valve core 22 to rotate to a target position.

[0093] When it is necessary to de-energize the third magnetic chuck 26 and energize the second magnetic chuck 25, first de-energize the third magnetic chuck 26, then energize the fourth magnetic chuck 27, so that the first magnetic chuck 24 and the fourth magnetic chuck 27 attract each other, driving the valve core 22 back to the reset position. Then, de-energize the fourth magnetic chuck 27 and energize the second magnetic chuck 25, so that the first magnetic chuck 24 and the second magnetic chuck 25 attract each other, driving the valve core 22 to rotate to another target position.

[0094] In the above embodiment, during the switching of the energized states between the second magnetic chuck 25 and the third magnetic chuck 26, a fourth magnetic chuck 27 is introduced as a transition positioning point. Before each switching, the valve core 22 is guided to a unified reset position and locked by the fourth magnetic chuck 27 before moving to the target position. Therefore, the first magnetic chuck 24 can always be in a controlled state, avoiding drift or malfunction due to loss of magnetic support, reducing the failure rate and improving the operational reliability of the system. Even if the control system experiences a brief signal disturbance or communication delay, the valve core 22 can always return to a known and controllable reference position, thereby preventing misconnection of the flow channel or abnormal operation of the compressor due to erroneous action. This improves the system's fault tolerance to abnormal situations such as control signal interruption and power fluctuation, and enhances the overall control safety.

[0095] According to the description of the above embodiments, the refrigeration system mainly achieves the switching of the control valve 2 by controlling the first magnetic attractor 24 of the control valve 2. The control valve 2 includes at least three states.

[0096] The first state is the initial state. At this time, the first magnetic attractor 24 on the control valve 2 is positioned below the fourth magnetic attractor 27 under the action of the first elastic member 28 and the second elastic member 29. At this time, the fourth magnetic attractor 27 is energized and becomes magnetic. The fourth magnetic attractor 27 and the first magnetic attractor 24 attract each other. At this time, the first interface 201 and the second interface 202 of the control valve 2 are connected.

[0097] Second state: The fourth magnetic attractor 27 is de-energized and loses its magnetism. The third magnetic attractor 26 is energized. Under the magnetic attraction of the third magnetic attractor 26, the first magnetic attractor 24 of the control valve 2 overcomes the elasticity of the first elastic member 28 and the second elastic member 29. The first magnetic attractor 24 moves towards the third magnetic attractor 26, driving the valve core 22 to rotate, thereby realizing the connection between the second interface 202 and the third interface 203 of the control valve 2.

[0098] Third state: The fourth magnetic attractor 27 is de-energized and loses its magnetism. The second magnetic attractor 25 is energized. Under the magnetic attraction of the second magnetic attractor 25, the first magnetic attractor 24 of the control valve 2 overcomes the elasticity of the first elastic member 28 and the second elastic member 29. The first magnetic attractor 24 moves towards the second magnetic attractor 25, driving the valve core 22 to rotate, thus realizing the connection between the first interface 201 and the third interface 203 of the control valve 2.

[0099] It is worth noting that when the second state switches to the first state, the control first de-energizes the third magnetic 26, the second magnetic 25 and the fourth magnetic 27. When the first magnetic 24 returns to its initial position under the elastic force of the first elastic element 28 and the second elastic element 29, the fourth magnetic 27 is energized, and the first magnetic 24 and the fourth magnetic 27 attract each other again, and the second state switches to the first state.

[0100] When the third state switches to the first state, the control first de-energizes the second magnetic 25, the third magnetic 26 and the fourth magnetic 27. When the first magnetic 24 returns to its initial position under the elastic force of the first elastic element 28 and the second elastic element 29, the fourth magnetic 27 is energized, and the first magnetic 24 and the fourth magnetic 27 attract each other again, and the third state switches to the first state.

[0101] When switching from the second state to the third state, it is necessary to first switch from the second state to the first state, and then switch from the first state to the third state.

[0102] When switching from the third state to the second state, it is necessary to first switch from the third state to the first state, and then switch from the first state to the second state.

[0103] In the above embodiment, the drive structure of the control valve 2 includes an iron core and an electromagnetic coil wound around the iron core. By passing current through the electromagnetic coil, a controllable electromagnetic field is generated, thereby driving the iron core, i.e., a part of the valve core 22 or a component linked to the valve core 22, to rotate, thus achieving precise control of the rotation angle of the control valve 2. When the valve core 22 rotates to a certain preset angle, such as 120°, the flow channel structure inside the control valve 2 switches accordingly, so that two of the first interface 201, the second interface 202, and the third interface 203 achieve a corresponding conductive relationship, thereby completing the switching between different operating modes of the compressor. Among them, the iron core, as the core component of the electromagnetic drive structure, plays the role of concentrating the magnetic field and converting it into mechanical torque to drive the valve core 22 to rotate, thereby realizing the electronic control adjustment of the flow channel switching state of the control valve 2.

[0104] In some embodiments, control valve 2 includes a three-way valve.

[0105] refer to Figure 6 and Figure 7 In some embodiments, the compressor 1 further includes a first cylinder 11 and a second cylinder, the first cylinder 11 and the second cylinder being configured to be in a working state at the same time, and the displacement of the compressor 1 being a first displacement; the first cylinder 11 being configured to be in a non-working state and the second cylinder being configured to be in a working state, and the displacement of the compressor 1 being a second displacement.

[0106] In the above embodiments, the control valve 2 is configured to operably connect the first interface 201 and the third interface 203, so that the first cylinder 11 and the second cylinder are simultaneously in working state, so that the compressor 1 runs at the first displacement. The control valve 2 is configured to operably connect the second interface 202 and the third interface 203, so that the first cylinder 11 is in non-working state and the second cylinder is in working state, so that the compressor 1 runs at the second displacement. By adding the control valve 2 to the system to complete the single and dual cylinder switching control of the compressor, the switching process is smooth and reliable. The compressor 1 can automatically switch the operating displacement according to the actual cooling demand, avoiding unnecessary energy waste and significantly improving the energy efficiency ratio.

[0107] In some embodiments, a sliding plate 12 is provided inside the first cylinder 11, and a locking hole is also provided on the first cylinder 11. The locking hole communicates with the variable displacement port 103, and a locking member 13 is provided inside the locking hole. The locking member 13 is configured to extend into the first cylinder 11 and fix the sliding plate 12 when the second interface 202 and the third interface 203 are connected. The locking member 13 is configured to move away from the first cylinder 11 when the first interface 201 and the third interface 203 are connected, thereby releasing the fixation of the locking member 13.

[0108] In some embodiments, the compressor 1 further includes a rotating shaft 14.

[0109] In some embodiments, reference Figure 6 With the second interface 202 and the third interface 203 connected, low-pressure gas is introduced into the variable-capacity port 103. Under the action of the pressure difference, the locking member 13 moves upward and inserts into the interior of the first cylinder 11, locking the sliding vane 12. At this time, although the rotating shaft 14 is still rotating, it cannot drive the sliding vane 12 to perform compression. Therefore, the first cylinder 11 does not participate in the compression process, and only the second cylinder works, with the compressor in single-cylinder operation mode. Since one cylinder is in an unloaded state, the system energy consumption is significantly reduced.

[0110] refer to Figure 7 With the first interface 201 and the third interface 203 connected, high-pressure gas is introduced into the variable-capacity port 103. Under the action of the pressure difference, the locking member 13 moves downward and disengages from the first cylinder 11. The sliding vane 12 adheres tightly to the surface of the rotating shaft 14 under the action of system pressure, and rotates with the rotating shaft 14 to complete the intake and compression process. At this time, both cylinders are in working condition, and the compressor 1 enters the dual-cylinder operation mode, which can output a larger displacement to meet the needs of high-load conditions.

[0111] In the above embodiment, by controlling the up-and-down movement of the locking member 13, the sliding vane 12 is controlled to participate in the compression process, thereby controlling whether the first cylinder 11 is in operation, achieving flexible switching between single and dual-cylinder operation of the compressor. This structure can achieve displacement adjustment without additional complex mechanical transmission mechanisms, improving the system's adaptability and energy efficiency ratio. In single-cylinder operation mode, one cylinder is in a non-working state, and the shaft rotates idling, effectively reducing energy consumption during low-load operation and promoting energy-saving operation. In dual-cylinder operation mode, both cylinders are in a working state, which can output a larger displacement to meet the needs of high-load conditions.

[0112] In the above embodiment, the locking member 13 is automatically driven by the gas pressure change introduced by the variable capacity port 103, which has a fast response speed and reliable operation.

[0113] In some embodiments, the refrigeration system further includes a controller electrically connected to the control valve 2, and the controller is configured to control the first interface 201 to communicate with the second interface 202 when the refrigeration system is first turned on.

[0114] In the above embodiment, when the refrigeration system is just turned on, the first interface 201 and the second interface 202 are connected. By setting this initial state, the compressor can achieve pressure balance between the suction and exhaust chambers before starting, thereby avoiding the start-up shock caused by excessive system pressure difference.

[0115] In some embodiments, taking a multi-split refrigeration system as an example, since the operating state of the refrigeration system is usually controlled by the electronic expansion valves of multiple indoor units, the pressure distribution of each part of the refrigeration system is uneven when it is off. When the refrigeration system restarts, compressor 1 may face a high suction and discharge pressure difference, which not only increases the load on the compressor during startup but may also aggravate the wear of internal components and shorten their service life.

[0116] Based on this, the embodiments of this disclosure control valve 2 to connect the first interface 201 and the second interface 202 before and immediately after compressor 1 starts, thereby connecting the suction and discharge pressures of compressor 1. This achieves pressure neutralization and balance within the system before and immediately after compressor start-up. Consequently, the compressor can start at near-zero pressure differential (pressure differential-free start-up), significantly reducing starting load, minimizing mechanical shock and compressor wear, and improving system stability and reliability.

[0117] In some embodiments, the controller is further configured to control the first interface 201 to connect with the third interface 203 when the first interface 201 and the second interface 202 are connected for a preset time.

[0118] In the above embodiments, the refrigeration system requires the refrigerant to begin circulating within the system during initial startup. If the compressor operates in single-cylinder mode at this time, the refrigerant flow rate is small, resulting in slow refrigerant circulation and making it difficult to quickly establish a normal heat exchange cycle. Furthermore, single-cylinder startup requires a large starting torque from the compressor, which can easily cause additional wear and tear on critical components such as the shaft. Therefore, after initial pressure balancing, the controller connects the first interface 201 to the third interface 203, switching the compressor to dual-cylinder operation mode. With both cylinders working simultaneously, the refrigerant circulation speed is significantly increased, accelerating the system's entry into a stable operating state. Simultaneously, the mechanical load during compressor startup is reduced, improving system efficiency and reliability.

[0119] In some embodiments, the preset time can be selected as approximately 60 seconds.

[0120] In some embodiments, the controller is further configured to, after the first interface 201 is connected to the third interface 203, control the second interface 202 to connect to the third interface 203 based on the detection information, or control the first interface 201 to remain connected to the third interface 203.

[0121] In the above embodiment, the controller dynamically determines whether it is necessary to switch the control valve 2 from the connection between the first interface 201 and the third interface 203 to the connection between the second interface 202 and the third interface 203 based on the current system load demand, pressure status, or operating mode. This control method enables the compressor to flexibly switch between single and dual-cylinder operating modes according to actual operating needs, improving the system's intelligence level, operational adaptability, and operating efficiency.

[0122] Under high load conditions, the controller keeps the first interface 201 and the third interface 203 connected, maintaining the dual-cylinder operation of the compressor to meet higher cooling demands.

[0123] Under low load or transitional operating conditions, the controller switches to the second interface 202 and the third interface 203 to conduct, so that the compressor enters the single-cylinder operation mode, reducing energy consumption and improving the overall energy efficiency of the system.

[0124] In some embodiments, the startup and operation process of the refrigeration system is as follows: When the refrigeration system is first powered on, the first interface 201 is connected to the second interface 202. After the first interface 201 and the second interface 202 have been connected for a preset time, the first interface 201 is connected to the third interface 203. After the first interface 201 and the third interface 203 are connected, the second interface 202 is connected to the third interface 203 according to the detection information, or the first interface 201 and the third interface 203 are kept connected.

[0125] According to the descriptions of the above embodiments, the switching between single and dual cylinders of the compressor is mainly controlled by the variable capacity port below the compressor. Furthermore, to achieve the switching between single and dual cylinders, high-pressure or low-pressure gas needs to be introduced into the variable capacity port. A control valve 2 is also added to the system. The control valve 2 has three ports: the first port 201 is connected to the compressor outlet 101, which can also be the compressor's exhaust pipe; the second port 202 is connected to the compressor inlet 102, which can also be the compressor's suction pipe; and the third port 203 is connected to the variable capacity port 103 on the variable capacity compressor.

[0126] When the system requires dual-cylinder operation, the first magnetic attractor 24 and the second magnetic attractor 25 attract each other, the first interface 201 and the third interface 203 are connected, and the high-pressure gas in the system is introduced into the variable capacity port 103 of the compressor 1, so that the compressor operates in dual-cylinder mode.

[0127] When the system requires single-cylinder operation, the first magnetic attractor 24 and the third magnetic attractor 26 attract each other, and the second interface 202 and the third interface 203 are connected. The low-pressure gas in the system is introduced into the variable capacity port 103 of the compressor 1, so that the compressor can operate in single-cylinder mode.

[0128] The following is in conjunction with the appendix Figures 1 to 7 A detailed description of some specific embodiments of the refrigeration system is provided.

[0129] In some specific embodiments, the refrigeration system includes a compressor 1 and a control valve 2. The compressor 1 includes an outlet 101, an inlet 102, and a variable displacement port 103. The compressor 1 also includes a first cylinder 11 and a second cylinder. When the first cylinder 11 and the second cylinder operate simultaneously, the compressor 1 has a first displacement. When the first cylinder 11 is not operating and the second cylinder is operating, the compressor has a second displacement. The control valve 2 includes a first interface 201, a second interface 202, and a third interface 203. The first interface 201 is connected to the outlet 101, the second interface 202 is connected to the inlet 102, and the third interface 203 is connected to the variable displacement port 103. The control valve 2 is configured to operably connect the first interface 201 to the third interface 203 to allow the compressor 1 to operate at the first displacement, or to operably connect the second interface 202 to the third interface 203 to allow the compressor 1 to operate at the second displacement.

[0130] The control valve 2 also includes a housing 21, a valve core 22, and a connector 23. The housing 21 is provided with a first interface 201, a second interface 202, and a third interface 203. The valve core 22 is rotatably disposed within the housing 21. The connector 23 is disposed on the valve core 22 and is configured to rotate with the valve core 22 to connect the first interface 201 and the third interface 203, or connect the second interface 202 and the third interface 203, or connect the first interface 201 and the second interface 202.

[0131] The control valve 2 also includes a first magnetic attractor 24, a second magnetic attractor 25, a third magnetic attractor 26, and a fourth magnetic attractor 27.

[0132] A first magnetic attractor 24 is disposed on the valve core 22. A second magnetic attractor 25, a third magnetic attractor 26, and a fourth magnetic attractor 27 are disposed on the housing 21. The first magnetic attractor 24, the second magnetic attractor 25, and the third magnetic attractor 26 are evenly spaced around the circumference of the valve core 22. The first magnetic attractor 24 and the second magnetic attractor 25 are connected by a first elastic member 28. The first magnetic attractor 24 and the third magnetic attractor 26 are connected by a second elastic member 29. The fourth magnetic attractor 27 is disposed between the second magnetic attractor 25 and the third magnetic attractor 26, and is located above the first magnetic attractor 24.

[0133] The first magnetic attractor 24 can be in a normally energized form.

[0134] In the initial state, the first magnetic attractor 24 is located below the fourth magnetic attractor 27 under the action of the first elastic member 28 and the second elastic member 29. At this time, the fourth magnetic attractor 27 is energized and becomes magnetic. The fourth magnetic attractor 27 and the first magnetic attractor 24 attract each other. At this time, the first port 201 of the control valve 2 is connected to the second port 202.

[0135] When it is necessary to switch from the initial state to the single-cylinder operation mode, the fourth magnetic chuck 27 is de-energized and loses its magnetism, the third magnetic chuck 26 is energized, and the first magnetic chuck 24 of the control valve 2, under the magnetic attraction of the third magnetic chuck 26, overcomes the elasticity of the first elastic element 28 and the second elastic element 29 and moves towards the third magnetic chuck 26, driving the valve core 22 to rotate, so that the second interface 202 of the control valve 2 is connected to the third interface 203.

[0136] When it is necessary to switch from the initial state to the dual-cylinder operation mode, the fourth magnetic chuck 27 is de-energized and loses its magnetism, the second magnetic chuck 25 is energized, and the first magnetic chuck 24 of the control valve 2, under the magnetic attraction of the second magnetic chuck 25, overcomes the elasticity of the first elastic element 28 and the second elastic element 29 and moves toward the second magnetic chuck 25, driving the valve core 22 to rotate, so that the first interface 201 of the control valve 2 is connected to the third interface 203.

[0137] When switching from single-cylinder operation mode to dual-cylinder operation mode, or vice versa, the third magnetic chuck 26, the second magnetic chuck 25, and the fourth magnetic chuck 27 are all de-energized first. The first magnetic chuck 24 returns to its initial position under the elastic force of the first elastic element 28 and the second elastic element 29. The fourth magnetic chuck 27 is energized, and the first magnetic chuck 24 and the fourth magnetic chuck 27 attract each other again. That is, the initial state is restored first, and then the dual-cylinder operation mode or the single-cylinder operation mode is switched from the initial state.

[0138] Some embodiments of this disclosure also provide an air conditioner that includes the refrigeration system described above.

[0139] In the above embodiments, the air conditioner includes the refrigeration system provided in the embodiments of this disclosure, and accordingly has the beneficial effects of the refrigeration system.

[0140] In some embodiments, the air conditioner includes a multi-split unit equipped with a variable frequency and variable capacity compressor.

[0141] In the above embodiments, the air conditioner includes the refrigeration system provided in the present disclosure. By setting the control valve 2, the system can be simplified and the control of the variable frequency and variable capacity multi-split unit can be completed.

[0142] In some embodiments, the compressor 1 has a variable capacity port 103, and the control valve 2 is connected to the compressor 1 inlet 102, outlet 101 and variable capacity port 103. The purpose is to achieve single-cylinder switching of the compressor by controlling the locking member 13 of the variable capacity port 103 to fix the sliding vane 12.

[0143] refer to Figure 8 In some embodiments, the air conditioner's start-up and operation process is as follows:

[0144] The air conditioner's control system receives the start-up signal;

[0145] The first port 201 and the second port 202 in the control valve 2 are connected for a preset time (e.g., 60 seconds) to reduce the starting pressure difference;

[0146] The first port 201 and the third port 203 in control valve 2 are connected, and compressor 1 starts in dual cylinders;

[0147] The air conditioning control system calculates the output conditions;

[0148] When the air conditioner reaches the condition of single-cylinder start-up, the second port 202 and the third port 203 in the control valve 2 are connected, and the compressor 1 operates in single-cylinder mode.

[0149] When the air conditioner reaches the condition for dual-cylinder start-up, the first interface 201 and the third interface 203 in the control valve 2 are connected, and the compressor 1 operates in dual-cylinder mode.

[0150] refer to Figure 1 In some embodiments, the refrigeration system also includes an oil separator 3, a heat exchanger 4, and a gas-liquid separator 5.

[0151] Based on the embodiments disclosed above, in the absence of explicit denial or conflict, the technical features of one embodiment may be advantageously combined with one or more other embodiments.

[0152] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.

Claims

1. A refrigeration system, characterized in that, include: The compressor (1) includes an outlet (101), an inlet (102) and a variable capacity port (103), and the compressor (1) has a first displacement and a second displacement; as well as The control valve (2) includes a first port (201), a second port (202), and a third port (203), the first port (201) being connected to the outlet (101), the second port (202) being connected to the inlet (102), and the third port (203) being connected to the variable displacement port (103); the control valve (2) is configured to operablely connect the first port (201) to the third port (203) to cause the compressor (1) to operate at the first displacement, or to operablely connect the second port (202) to the third port (203) to cause the compressor (1) to operate at the second displacement.

2. The refrigeration system of claim 1, wherein, The control valve (2) also includes: A housing (21) on which the first interface (201), the second interface (202) and the third interface (203) are provided; The valve core (22) is rotatably disposed within the housing (21); and A connector (23) is provided on the valve core (22), the connector (23) being configured to rotate with the valve core (22) to connect the first interface (201) and the third interface (203), or to connect the second interface (202) and the third interface (203).

3. The refrigeration system of claim 2, wherein, The control valve (2) also includes: A first magnetic attractor (24) is disposed on the valve core (22), and the first magnetic attractor (24) is configured to move under the action of magnetic attraction to drive the valve core (22) to rotate; and The second magnetic attractor (25) and the third magnetic attractor (26) are disposed on the housing (21); Wherein, the first magnetic clasp (24) attracts the second magnetic clasp (25), and the first interface (201) is connected to the third interface (203); the first magnetic clasp (24) attracts the third magnetic clasp (26), and the second interface (202) is connected to the third interface (203).

4. The refrigeration system of claim 3, wherein, The first magnetic attractor (24), the second magnetic attractor (25) and the third magnetic attractor (26) are arranged circumferentially around the valve core (22).

5. The refrigeration system of claim 4, wherein, The control valve (2) also includes: A first elastic element (28) connects the first magnetic element (24) and the second magnetic element (25); and The second elastic element (29) connects the first magnetic element (24) and the third magnetic element (26).

6. The refrigeration system of claim 4 wherein, The first interface (201), the second interface (202) and the third interface (203) are arranged sequentially along the circumference of the valve core (22), and the connector (23) is also configured to rotate with the valve core (22) to connect the first interface (201) and the second interface (202).

7. The refrigeration system of claim 6, wherein, The control valve (2) also includes: The fourth magnetic attractor (27) is located between the second magnetic attractor (25) and the third magnetic attractor (26) and above the first magnetic attractor (24). The first magnetic attractor (24) attracts the fourth magnetic attractor (27), and the first interface (201) is connected to the second interface (202).

8. The refrigeration system of claim 7, wherein, Also includes: The controller is electrically connected to the second magnetic chuck (25), the third magnetic chuck (26), and the fourth magnetic chuck (27). The controller is configured to control one of the second magnetic chuck (25), the third magnetic chuck (26), and the fourth magnetic chuck (27) to be energized to generate magnetism, and when controlling the second magnetic chuck (25) and the third magnetic chuck (26) to switch between energized states, the controller first controls the fourth magnetic chuck (27) to be energized.

9. The refrigeration system of claim 1 wherein, The compressor (1) further includes a first cylinder (11) and a second cylinder, wherein the first cylinder (11) and the second cylinder are configured to be in working state at the same time, and the displacement of the compressor (1) is the first displacement; wherein the first cylinder (11) is configured to be in non-working state, and the second cylinder is configured to be in working state, and the displacement of the compressor (1) is the second displacement.

10. The refrigeration system of claim 9, wherein, The first cylinder (11) is provided with a sliding plate (12) and a locking hole. The locking hole is connected to the variable displacement port (103). A locking member (13) is inserted through the locking hole. The locking member (13) is configured to penetrate into the first cylinder (11) and fix the sliding plate (12) when the second interface (202) is connected to the third interface (203). The locking member (13) is configured to move away from the first cylinder (11) when the first interface (201) is connected to the third interface (203), thereby releasing the fixation of the locking member (13).

11. The refrigeration system of claim 1 wherein, It also includes a controller electrically connected to the control valve (2), the controller being configured to control the first interface (201) to connect to the second interface (202) when the refrigeration system is just turned on.

12. The refrigeration system of claim 11, wherein, The controller is also configured to control the first interface (201) to connect with the third interface (203) when the first interface (201) and the second interface (202) are connected for a preset time.

13. The refrigeration system of claim 12, wherein, The controller is also configured to, after the first interface (201) is connected to the third interface (203), control the second interface (202) to connect to the third interface (203) based on the detection information, or control the first interface (201) to remain connected to the third interface (203).

14. An air conditioner characterized by comprising: Includes the refrigeration system according to any one of claims 1 to 13.

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