Refrigeration system and refrigeration device

Abstract

The application discloses a refrigeration system and a refrigeration equipment. The refrigeration system comprises a compressor, a condenser, a throttling component and an evaporator which are sequentially connected through a pipeline structure to form a refrigeration circuit. The refrigeration circuit is provided with a plurality of throttling paths. Each throttling path is provided with at least one throttling component and is connected between the condenser and the evaporator. The throttling capacity of at least part of the throttling paths is differentially arranged. The refrigeration system further comprises a first switching component arranged in the refrigeration circuit. The first switching component is used for selectively conducting any throttling path. After the compressor is turned off, the first switching component cuts off the flow path between the condenser and the evaporator, prevents the condenser from reabsorbing ambient heat, and reduces the energy consumption required when the compressor is restarted. Before the compressor is restarted, the first switching component conducts the throttling path, so that the refrigerant in the condenser which is cooled down during shutdown enters the evaporator after being throttled and decompressed by the throttling component, the evaporator is pre-cooled, and the initial refrigeration effect of the evaporator is improved.

Description

Technical Field

[0001] This invention relates to the field of refrigeration equipment technology, and specifically to a refrigeration system and refrigeration equipment. Background Technology

[0002] Existing refrigeration systems, taking refrigerators as an example, generally form a refrigeration circuit that flows sequentially through the compressor, condenser, evaporator, and back to compressor. When cooling is requested, the refrigerant in the condenser is in a high-temperature, high-pressure state, while the refrigerant in the evaporator is in a low-temperature, low-pressure state. When cooling is not requested, the pressure in the condenser decreases, and the liquid refrigerant in the condenser may re-evaporate, absorbing heat from the environment and increasing the refrigerator's heat load. Furthermore, after restarting, the system needs to re-establish the pressure difference between the condenser and evaporator, leading to increased energy consumption. Summary of the Invention

[0003] The main objective of this invention is to propose a refrigeration system and refrigeration equipment that aims to solve the problem of increased refrigerator energy consumption caused by refrigerant flowing from the condenser to the evaporator when the traditional refrigeration cycle stops.

[0004] To achieve the above objectives, the present invention proposes a refrigeration system comprising a compressor, a condenser, a throttling component, and an evaporator, which are sequentially connected by a piping structure to form a refrigeration circuit;

[0005] The refrigeration circuit is provided with multiple throttling paths, each of which is provided with at least one throttling component and is connected between the condenser and the evaporator. At least some of the throttling paths have different throttling capabilities.

[0006] The refrigeration system further includes a first switching component disposed in the refrigeration circuit, the first switching component being used to selectively switch on any of the throttling paths.

[0007] Optionally, the refrigeration circuit is provided with multiple throttling branches in parallel between the condenser and the evaporator, and each throttling branch is provided with at least one throttling component;

[0008] Wherein, at least one of the throttling branches defines a throttling path.

[0009] Optionally, the plurality of throttling branches include a first throttling branch and a second throttling branch, and a connecting branch is provided between the output end of the first throttling branch and the input end of the second throttling branch; the refrigeration system further includes a second switching component for controlling the on / off state of the connecting branch, so that when the second switching component turns on the connecting branch, the first throttling branch, the connecting branch, and the second throttling branch together constitute a third throttling branch;

[0010] The first throttling branch, the second throttling branch, and the third throttling branch each define a throttling path.

[0011] Optionally, the throttling parameters of the throttling components in the multiple throttling branches are set differently.

[0012] Optionally, the throttling parameters of the throttling components in multiple throttling branches are set to the same value.

[0013] Optionally, multiple evaporators are provided on the refrigeration circuit.

[0014] Optionally, the plurality of evaporators includes a first evaporator and a second evaporator, wherein the cooling temperature of the first evaporator is greater than the cooling temperature of the second evaporator.

[0015] Optionally, the refrigeration circuit includes a first flow path and a second flow path, the input ends of the first flow path and the second flow path are connected, the first evaporator is disposed in the first flow path, the second evaporator is disposed in the second flow path, and a plurality of the throttling paths are disposed in the first flow path and / or the second flow path.

[0016] Optionally, the outputs of the first flow path and the second flow path are connected.

[0017] Optionally, the throttling component is provided in multiple ways, including a first throttling component provided in the first flow path and a second throttling component provided in the second flow path;

[0018] The output end of the first flow path is connected between the second evaporator and the second throttling component.

[0019] Optionally, the throttling component includes a capillary.

[0020] Optionally, the refrigeration system further includes a dryer filter disposed between the throttling component and the condenser.

[0021] Optionally, the refrigeration system further includes a control device electrically connected to the first switching component and the compressor, respectively, to control the first switching component to open any of the throttling paths and run for a set time, and then control the compressor to start.

[0022] Optionally, the control device is further configured to obtain the set time that matches the determined throttling path.

[0023] In addition, to achieve the above objectives, the present invention also provides a refrigeration device, the refrigeration device including a refrigeration system, the refrigeration system including a compressor, a condenser, a throttling component and an evaporator connected in sequence by a pipeline structure to form a refrigeration circuit;

[0024] The refrigeration circuit is provided with multiple throttling paths, each of which is provided with at least one throttling component and is connected between the condenser and the evaporator. At least some of the throttling paths have different throttling capabilities.

[0025] The refrigeration system further includes a first switching component disposed in the refrigeration circuit, the first switching component being used to selectively switch on any of the throttling paths.

[0026] Optionally, the refrigeration device is a refrigerator.

[0027] In the technical solution provided by this invention, the first switching component cuts off the flow path between the condenser and the evaporator when the compressor is shut down, which helps maintain the pressure at the condenser and prevents the refrigerant from reabsorbing heat from the environment due to the pressure drop at the condenser. It can also reduce the energy consumption required to form a pressure difference on both sides during the compressor restart process, thus achieving energy saving. When the refrigeration system enters the next operating cycle, the first switching component opens any suitable throttling path before the compressor restarts, so that the refrigerant in the condenser, after being cooled down by shutdown, is throttled and depressurized when flowing through the throttling path. After entering the evaporator, it pre-cools the evaporator, which helps to improve the initial cooling effect of the evaporator after the compressor restarts, reduces the overall machine operating rate, and helps to further reduce the overall energy consumption of the machine. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the structure of the first embodiment of the refrigeration system provided by the present invention;

[0030] Figure 2 A schematic diagram of the structure of a second embodiment of the refrigeration system provided by the present invention;

[0031] Figure 3 This is a partially enlarged structural schematic diagram of the third embodiment of the refrigeration system provided by the present invention;

[0032] Figure 4 A schematic diagram of the fourth embodiment of the refrigeration system provided by the present invention;

[0033] Figure 5 A schematic diagram of the fifth embodiment of the refrigeration system provided by the present invention;

[0034] Figure 6 A schematic diagram of the sixth embodiment of the refrigeration system provided by the present invention.

[0035] Explanation of icon numbers:

[0036]

[0037]

[0038] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0040] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0041] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0042] Existing refrigeration systems, taking refrigerators as an example, generally form a refrigeration circuit that flows sequentially through the compressor, condenser, evaporator, and back to compressor. When cooling is requested, the refrigerant in the condenser is in a high-temperature, high-pressure state, while the refrigerant in the evaporator is in a low-temperature, low-pressure state. When cooling is not requested, the pressure in the condenser decreases, and the liquid refrigerant in the condenser may re-evaporate, absorbing heat from the environment and increasing the refrigerator's heat load. Furthermore, after restarting, the system needs to re-establish the pressure difference between the condenser and evaporator, leading to increased energy consumption.

[0043] In view of the above, the present invention provides a refrigeration system applied in refrigeration equipment, such as refrigerators, freezers, and air conditioners. For ease of understanding, the following description will use a refrigerator as an example of the refrigeration equipment. Please refer to [link to relevant documentation]. Figures 1 to 6 The attached figure shows a specific embodiment of the refrigeration system provided by the present invention when applied to a refrigerator.

[0044] It should be noted that in the following embodiments, "multiple" refers to two or more.

[0045] Please see Figure 1 The refrigeration system 1 provided by the present invention includes a compressor 100, a condenser 200, a throttling component 300, and an evaporator 400 connected sequentially through a pipeline structure 10a to form a refrigeration circuit 10; wherein, the refrigeration circuit 10 is provided with a plurality of throttling paths, each of the throttling paths is provided with at least one of the throttling components 300 and is connected between the condenser 200 and the evaporator 400, and at least some of the throttling paths are configured with different throttling capabilities; the refrigeration system 1 also includes a first switching component 500 provided in the refrigeration circuit 10, the first switching component 500 being used to selectively switch on any of the throttling paths.

[0046] In the technical solution provided by this invention, the first switching component 500 cuts off the flow path between the condenser 200 and the evaporator 400 when the compressor 100 is turned off. This helps maintain the pressure at the condenser 200 and prevents the refrigerant from reabsorbing heat from the environment due to a pressure drop at the condenser 200. It also reduces the energy consumption required to form a pressure difference between the two sides during the compressor 100 restart process, thus achieving energy saving. When the refrigeration system 1 enters the next operating cycle, the first switching component 500 opens any suitable throttling path before the compressor 100 restarts. This allows the refrigerant in the condenser 200, after being cooled down during shutdown, to be throttled and depressurized when flowing through the throttling path. After entering the evaporator 400, it pre-cools the evaporator 400, which helps improve the initial cooling effect of the evaporator 400 after the compressor 100 restarts, reduces the overall machine operating rate, and further reduces the overall energy consumption of the machine.

[0047] It is understood that the discharge side of the compressor 100, the condenser 200, the throttling component 300, the evaporator 400, and the suction side of the compressor 100 are sequentially connected through a multi-segment pipeline structure 10a to form a refrigeration circuit 10. It should be noted that the above-mentioned components do not constitute a limitation on the composition of the refrigeration system 1. Depending on actual needs, other components may be connected in series or parallel on the refrigeration circuit 10; furthermore, the refrigeration system 1 may also be connected to bypasses or branches at any suitable location on the refrigeration circuit 10, which will not be elaborated upon here.

[0048] In one embodiment, the refrigeration system 1 further includes a dryer filter 700, which is disposed between the throttling component 300 and the condenser 200. The dryer filter 700 can filter and dehumidify the passing refrigerant, effectively reducing the risk of ice blockage in the refrigeration circuit 10. This design does not limit the specific form of the dryer filter 700; the specifications of the dryer filter 700 can be adjusted according to the actual needs of the refrigeration system 1. The specifications of the dryer filter 700 include dimensions such as inner diameter and outer diameter, as well as the types of internal components such as filter bowls, mesh cloth, and molecular sieves.

[0049] Based on the above-mentioned refrigeration circuit 10, the compressor 100 compresses the gaseous refrigerant into a high-temperature, high-pressure gaseous state and sends it to the condenser 200 for cooling. After being cooled by the condenser 200, the refrigerant becomes a medium-temperature, high-pressure liquid refrigerant and enters the dryer filter 700 for filtration and dehumidification. The medium-temperature liquid refrigerant is throttled and depressurized by the throttling component 300, forming a low-temperature, low-pressure gas-liquid mixture with a high liquid content. After passing through the evaporator 400, it absorbs heat from the air and vaporizes, becoming a gaseous state. Finally, it returns to the compressor 100 to continue compression and continue the cycle for refrigeration.

[0050] In this embodiment, since the refrigerant must pass through the throttling component 300 when flowing from the condenser 200 to the evaporator 400, the flow path from the condenser 200 to the evaporator 400 is defined as a throttling path. The refrigeration circuit 10 has multiple throttling paths between the condenser 200 and the evaporator 400. However, it should be noted that during normal operation of the refrigeration system 1, one of the multiple throttling paths is open to allow the refrigerant to flow, while the remaining throttling paths are in an open state.

[0051] The first switching component 500 is used to selectively open any of the throttling paths. It is understood that the first switching component 500 can be configured as a single unit, for example, a multi-way reversing valve, which is located at the same input end of multiple throttling paths and is capable of switching the refrigerant flowing out of the condenser 200 to any of the throttling paths.

[0052] Of course, the first switching component 500 can also be configured as multiple components corresponding to multiple throttling paths. For example, the first switching component 500 is a switching valve. When the switching valve is open, the corresponding throttling path is opened; when the switching valve is closed, the corresponding throttling path is closed. Therefore, during normal operation of the refrigeration system 1, generally one switching valve is opened and the other switching valves are closed.

[0053] Among the multiple throttling paths, at least a portion of the throttling paths are configured with different throttling capacities, that is, the throttling capacities between each pair are set differently, so that the refrigerant flowing out of the condenser 200 can undergo different degrees of throttling and pressure reduction when flowing through different throttling paths, thereby obtaining refrigerants with different flow rates and different temperatures.

[0054] Of course, among the multiple throttling paths, a number of throttling paths may be configured to have the same throttling capacity, so that any throttling path among the several throttling paths with the same throttling capacity can be enabled or used as a backup, so that when a throttling path with the same throttling capacity fails, the remaining throttling path can be enabled to ensure the normal operation of the refrigeration system 1.

[0055] The throttling capacity of the throttling path can generally be reflected by the throttling parameters of the throttling components 300 set on the throttling path: each throttling path may be provided with one or more throttling components 300. When multiple throttling components 300 are set on at least one throttling path, it can be understood that the various throttling components 300 can be connected in series or in series with each other; the throttling parameters of each throttling component 300 may be set to be the same or at least partially different; the types of each throttling component 300 may be set to be the same or at least partially different.

[0056] Based on the above, the throttling component 300 can reduce the pressure and temperature of the refrigerant flowing out of the condenser 200 by utilizing the throttling effect, and control the flow rate and superheat / cooling of the refrigerant in the refrigeration circuit 10. The specific form of the throttling component 300 is not limited and can be configured according to the actual needs of the refrigeration system 1. Generally, the throttling component 300 includes capillary tubes, electronic expansion valves, throttling horns, as well as manual expansion valves, float regulating valves, and thermostatic expansion valves. Since capillary tubes are widely used in refrigeration equipment such as refrigerators, in the following embodiments, the throttling component 300 will be described using a capillary tube as an example.

[0057] Different throttling components 300 will have different throttling parameters. For example, when the throttling component 300 is set as a capillary tube in this embodiment, the throttling parameters of the capillary tube can be tube diameter, tube length, number, etc.

[0058] Further, please refer to Figure 2 In one embodiment, the refrigeration circuit 10 has multiple throttling branches 11 connected in parallel between the condenser 200 and the evaporator 400. Specifically, the input end of each throttling branch 11 is connected to the output end of the condenser 200, and the output end of each throttling branch 11 is connected to the input end of the evaporator 400. Each throttling branch 11 is provided with at least one throttling component 300; wherein at least one throttling branch 11 defines a throttling path. That is, when the refrigeration system 1 is operating normally, the refrigerant flowing out of the condenser 200 can directly enter the evaporator 400 after flowing through one throttling branch 11; or, the refrigerant flowing out of the condenser 200 can enter the evaporator 400 after sequentially flowing through at least two throttling branches 11.

[0059] Based on the above, the throttling capacity of each throttling branch 11 can be configured differently. That is, when each throttling branch 11 is provided with one throttling component 300, the throttling parameters of each throttling component 300 are different from each other. When each throttling branch 11 is provided with multiple throttling components 300, by arbitrarily combining different numbers, different connection methods, different types and / or different throttling parameters of throttling components 300 on each throttling branch 11, the overall throttling capacity of each throttling branch 11 can be made different.

[0060] Of course, the throttling capacity of each throttling branch 11 can be set in the same way. That is, when each throttling branch 11 is provided with one throttling component 300, the throttling parameters of each throttling component 300 remain the same. When each throttling branch 11 is provided with multiple throttling components 300, by arbitrarily combining different numbers, different connection methods, different types and / or different throttling parameters of throttling components 300 on each throttling branch 11, the overall throttling capacity of each throttling branch 11 can also be made to be the same. In this case, it is necessary to use the first switching component 500 to switch different numbers of throttling branches 11 to jointly form the throttling path, to ensure that the throttling capacity of at least some of the throttling paths is set differently.

[0061] Specifically, please refer to Figure 3In one embodiment, the plurality of throttling branches 11 includes a first throttling branch 11a and a second throttling branch 11b. It should be noted that the throttling capacity of the first throttling branch 11a and the second throttling branch 11b can be the same or different; the first throttling branch 11a and the second throttling branch 11b can be any two of the plurality of throttling branches 11, and are not limited to two adjacent throttling branches 11; the first throttling branch 11a and the second throttling branch 11b do not constitute a limitation on their number, and in practical applications, there may also be a third throttling branch 11, a fourth throttling branch 11, etc.; and among the plurality of throttling branches 11, the combination of the first throttling branch 11a and the second throttling branch 11b can be set as one or more groups.

[0062] Specifically, the input end of the first throttling branch 11a is connected to the output end of the condenser 200, a connecting branch 11c is provided between the output end of the first throttling branch 11a and the input end of the second throttling branch 11b, and the output end of the second throttling branch 11b is connected to the evaporator 400; the refrigeration system 1 also includes a second switching component 600 for controlling the on / off state of the connecting branch 11c, so that when the second switching component 600 is on the connecting branch 11c, the first throttling branch 11a, the connecting branch 11c, and the second throttling branch 11b together constitute a third throttling branch 11. At this time, the first throttling branch 11a, the second throttling branch 11b, and the third throttling branch 11 each define a throttling path, providing a choice of three throttling paths for the refrigeration system 1, and among the three throttling paths, at least two throttling paths can be ensured to have different throttling capabilities.

[0063] In the above description, the second switching component 600 is analogous to the first switching component 500. The second switching component 600 can be a single unit, such as a multi-way reversing valve. This multi-way reversing valve is located between the first throttling branch 11a, the evaporator 400, and the connecting branch 11c, and can switch the refrigerant flowing out of the first throttling branch 11a to either the connecting branch 11c or the evaporator 400. Alternatively, the second switching component 600 can be multiple units. For example, the second switching component 600 is a switching valve, which is respectively installed on the first throttling branch 11a, the input flow path of the evaporator 400, and the connecting branch 11c. When the two switching valves on the first throttling branch 11a and the input flow path of the evaporator 400 are opened simultaneously, and the switching valve on the connecting branch 11c is closed, the first throttling branch 11a is connected to the first evaporator 410, forming the throttling path; when the two switching valves on the first throttling branch 11a and the connecting branch 11c are opened simultaneously, and the switching valve on the input flow path of the evaporator 400 is closed, the first throttling branch 11a, the connecting branch 11c, and the second throttling branch 11b form the throttling path.

[0064] In the above embodiments, the throttling parameters of the throttling components 300 of the multiple throttling branches 11 are set to the same value. The first switching component 500 controls the connection of the multiple throttling branches 11 to form a throttling path, ensuring that the throttling capacity of at least some of the throttling paths is set differently.

[0065] Alternatively, the throttling parameters of the throttling components 300 in the multiple throttling branches 11 can be set differently. In this case, any number of throttling branches 11 can respectively form throttling paths with different throttling capabilities.

[0066] Based on any of the above embodiments, it can be understood that, taking the application of the refrigeration system 1 in a refrigerator as an example, when the refrigerator is a single-system refrigerator, an evaporator 400 can be provided on the refrigeration circuit 10. Therefore, when the refrigerator is configured as a refrigerator compartment, the corresponding evaporator 400 is a refrigerator compartment evaporator; when the refrigerator is configured as a freezer compartment, the corresponding evaporator 400 is a freezer compartment evaporator.

[0067] When the refrigerator is a multi-system refrigerator, multiple evaporators 400 are provided on the refrigeration circuit 10. Specifically, for example, when the refrigerator is provided with at least two of the following compartments: a refrigerator compartment, a freezer compartment, and a variable temperature compartment, the corresponding evaporators 400 are at least two of the following: a refrigerator compartment evaporator, a freezer compartment evaporator, and a variable temperature compartment evaporator.

[0068] When the refrigeration system 1 is applied to different types of refrigeration equipment, the multiple evaporators 400 can be connected in series, parallel, or in a semi-series / parallel configuration, etc., as appropriate. The multiple evaporators 400 can be of the same or different types. The evaporator 400 can be any suitable form of evaporator 400, such as one or more of the following: tube-fin heat exchanger, microchannel heat exchanger, flat tube heat exchanger, shell-and-tube heat exchanger, plate heat exchanger, etc. For example, a tube-fin heat exchanger and a microchannel heat exchanger can be connected in series / parallel to serve as the evaporator for the freezer compartment.

[0069] It is understood that the required cooling temperatures for the refrigerator compartment, freezer compartment, and variable temperature compartment are different, resulting in different cooling temperatures for the refrigerator compartment evaporator, freezer compartment evaporator, and variable temperature evaporator. Therefore, in one embodiment, the plurality of evaporators 400 includes a first evaporator 410 and a second evaporator 420, wherein the cooling temperature of the first evaporator 410 is greater than that of the second evaporator 420. That is, when the refrigeration system 1 is applied in a multi-system refrigerator, the first evaporator 410 can be a refrigerator compartment evaporator, and the second evaporator 420 can be a freezer compartment evaporator.

[0070] Based on this, multiple throttling paths can be formed between the first evaporator 410 and the condenser 200. By selecting a suitable throttling path, the refrigerant flowing out of the condenser 200 can be throttled and depressurized before entering the first evaporator 410, cooling and dissipating heat from the first evaporator 410, thus pre-cooling the compartment (e.g., the refrigerator compartment) where the first evaporator 410 is located. In addition, the throttling path can reduce the amount of refrigerant entering the second evaporator 420, preventing the refrigerant from causing the compartment where the second evaporator 420 is located to heat up and increase the power consumption of the second evaporator 420.

[0071] There are multiple possible arrangements for the first evaporator 410, the second evaporator 420, and the plurality of throttling paths:

[0072] Please see Figure 1 In one embodiment, the refrigeration circuit 10 includes a first flow path 12 and a second flow path 13, both of which are connected between the condenser 200 and the compressor 100. The input ends of the first flow path 12 and the second flow path 13 are connected, allowing refrigerant flowing out of the condenser 200 to selectively enter the first flow path 12 and / or the second flow path 13. A first evaporator 410 is disposed in the first flow path 12, and a second evaporator 420 is disposed in the second flow path 13. Multiple throttling paths are provided in the first flow path 12 and / or the second flow path 13; that is, as shown... Figure 2 and Figure 4 As shown, multiple throttling paths can be connected between the first evaporator 410 and the condenser 200; or as... Figures 5 to 6 As shown, multiple throttling paths can be connected between the second evaporator 420 and the condenser 200.

[0073] Furthermore, multiple throttling paths are provided on the first flow path 12, and multiple throttling components 300 are provided. Each of the multiple throttling components 300 includes a first throttling component 310 provided on the throttling path and a second throttling component 320 provided on the second flow path 13. Specifically, multiple first throttling components 310 are provided, and the multiple throttling components 300 define multiple throttling paths according to the above embodiment; one or more second throttling components 320 can be provided, capable of throttling and reducing the pressure of the refrigerant entering the second evaporator 420.

[0074] The output end of the first flow path 12 is connected between the second evaporator 420 and the second throttling component 320, so that the refrigerant flowing out of the condenser 200 can enter the second evaporator 420 after passing through the first flow path 12, or the refrigerant flowing out of the condenser 200 can also enter the second evaporator 420 after passing through the second throttling component 320 in the second flow path 13.

[0075] Furthermore, in one embodiment, the first evaporator 410 may be located downstream of the second evaporator 420, that is, the second evaporator 420 is located between the condenser 200 and the first evaporator 410. In this case, the output end of the second flow path 13 is connected between the first evaporator 410 and the plurality of throttling paths, so that the refrigerant flowing out of the condenser 200 can enter the first evaporator 410 after passing through the second flow path 13, or the refrigerant flowing out of the condenser 200 can also enter the first evaporator 410 after passing through any of the throttling paths in the first flow path 12.

[0076] Please see Figure 4 and Figure 6 In one embodiment, the outputs of the first flow path 12 and the second flow path 13 are connected. That is, the first evaporator 410 and the branches containing the plurality of throttling paths are connected in parallel with the branches containing the second evaporator 420 and the second throttling component 320.

[0077] Based on any of the above embodiments, the refrigeration system 1 further includes a control device, which is electrically connected to the first switching component 500 and the compressor 100 respectively, so as to control the first switching component 500 to conduct any of the throttling paths and run for a set time, and then control the compressor 100 to start.

[0078] It is understood that before the compressor 100 restarts after being shut down, the first switching component 500 first selects any of the throttling paths and opens them, so that the refrigerant flowing out of the condenser 200 enters the evaporator 400 after passing through the throttling path, and maintains this state for a set time. As described above, the refrigerant in the condenser 200, after being cooled down by shutdown, enters the evaporator 400 (e.g., the first evaporator 410) after being throttled and depressurized through the throttling path, thus pre-cooling the evaporator 400. This results in a faster initial cooling speed of the evaporator 400 after the compressor 100 restarts, reducing the overall operating rate and helping to reduce energy consumption.

[0079] Furthermore, in one embodiment, the control device is also used to obtain the set time that matches the determined throttling path (hereinafter referred to as the target throttling path for ease of understanding).

[0080] The method for determining the target throttling path is not limited. For example, in one embodiment, the user can input a selection scheme for the target throttling path through input components such as buttons or a touch screen, so that the refrigeration system 1 operates according to the selection scheme during subsequent operation. The selection scheme may include the selection scheme for each target throttling path of the refrigeration system 1 in each operating cycle within set conditions, such as within a specified time period.

[0081] The target throttling path is correlated with the target time. For example, when the target throttling path is determined, since different target throttling paths are pre-mapped with different set times, the set time is also determined when the target throttling path is determined. Conversely, when the set time is determined, different throttling paths can be selected according to the throttling requirements of different refrigerants. For example, when the refrigeration system 1 finishes its previous operating cycle, the control device obtains the operating parameters of relevant components in the refrigeration system 1 during the previous operating cycle, such as the speed of the compressor 100 and the working state of the condenser 200. Based on these operating parameters, the throttling requirement of the refrigerant in the condenser 200 is determined, and a suitable target throttling path is selected based on the throttling requirement and the constrained set time.

[0082] Furthermore, the present invention also provides a refrigeration device, which includes a refrigeration system 1. It should be noted that the detailed structure of the refrigeration system 1 within the refrigeration device can be referred to the embodiments of the refrigeration system 1 described above, and will not be repeated here. Since the refrigeration system 1 described above is used in the refrigeration device of the present invention, the embodiments of the refrigeration device of the present invention include all the technical solutions of all embodiments of the refrigeration system 1 described above, and the achieved technical effects are also completely the same, and will not be repeated here.

[0083] Furthermore, in one embodiment, the refrigeration device is a refrigerator. The refrigerator may also include a cabinet defining, for example, a refrigerator compartment, a freezer compartment, and / or a variable temperature compartment, and also forming an installation space for the stable installation of the various components in the refrigeration system 1, which will not be described in detail here.

[0084] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A refrigeration system, characterized in that, This includes a compressor, condenser, throttling device, and evaporator, which are connected sequentially through a piping structure to form a refrigeration circuit; The refrigeration circuit is provided with multiple throttling paths, each of which is provided with at least one throttling component and is connected between the condenser and the evaporator. At least some of the throttling paths have different throttling capabilities. The refrigeration system further includes a first switching component disposed in the refrigeration circuit, the first switching component being used to selectively activate any of the throttling paths; When the compressor is shut down, the first switching component cuts off the flow path between the condenser and the evaporator. Before the compressor is restarted after shutdown, the first switching component selects any of the throttling paths to open, so that the refrigerant flowing out of the condenser enters the evaporator after passing through the throttling path, and maintains this state for a set time to cool the evaporator in advance.

2. The refrigeration system as described in claim 1, characterized in that, The refrigeration circuit is provided with multiple throttling branches in parallel between the condenser and the evaporator, and each throttling branch is provided with at least one throttling component. Wherein, at least one of the throttling branches defines a throttling path.

3. The refrigeration system as described in claim 2, characterized in that, The plurality of throttling branches include a first throttling branch and a second throttling branch, and a connecting branch is provided between the output end of the first throttling branch and the input end of the second throttling branch; the refrigeration system further includes a second switching component for controlling the on / off state of the connecting branch, so that when the second switching component turns on the connecting branch, the first throttling branch, the connecting branch and the second throttling branch together constitute a third throttling branch; The first throttling branch, the second throttling branch, and the third throttling branch each define a throttling path.

4. The refrigeration system as described in claim 2 or 3, characterized in that, The throttling parameters of the throttling components in the multiple throttling branches are set differently.

5. The refrigeration system as described in claim 3, characterized in that, The throttling parameters of the throttling components in multiple throttling branches are set to the same value.

6. The refrigeration system as described in claim 1, characterized in that, The evaporator is provided in multiple ways on the refrigeration circuit.

7. The refrigeration system as described in claim 6, characterized in that, The plurality of evaporators includes a first evaporator and a second evaporator, wherein the cooling temperature of the first evaporator is greater than the cooling temperature of the second evaporator.

8. The refrigeration system as described in claim 7, characterized in that, The refrigeration circuit includes a first flow path and a second flow path, the input ends of the first flow path and the second flow path are connected, the first evaporator is disposed in the first flow path, the second evaporator is disposed in the second flow path, and a plurality of the throttling paths are disposed in the first flow path and / or the second flow path.

9. The refrigeration system as described in claim 8, characterized in that, The outputs of the first flow path and the second flow path are connected.

10. The refrigeration system as described in claim 8, characterized in that, The throttling component is provided in multiple ways, and the multiple throttling components include a first throttling component provided in the second flow path and a second throttling component provided in the second flow path; The output end of the first flow path is connected between the second evaporator and the second throttling component.

11. The refrigeration system as claimed in claim 1, characterized in that, The throttling component includes a capillary tube.

12. The refrigeration system as described in claim 1, characterized in that, The refrigeration system also includes a dryer filter, which is disposed between the throttling component and the condenser.

13. The refrigeration system as described in claim 1, characterized in that, The refrigeration system also includes a control device, which is electrically connected to the first switching component and the compressor respectively, so as to control the first switching component to open any of the throttling paths and run for a set time, and then control the compressor to start.

14. The refrigeration system as described in claim 13, characterized in that, The control device is also used to obtain the set time that matches the determined throttling path.

15. A refrigeration device, characterized in that, Includes the refrigeration system as described in any one of claims 1 to 14.

16. The refrigeration equipment as described in claim 15, characterized in that, The refrigeration equipment is a refrigerator.

Images