Evaporator structure, heat pump system and refrigeration device

Abstract

This application provides an evaporator structure, a heat pump system, and a refrigeration device, belonging to the technical field of heat pump systems. The evaporator structure includes an evaporator body and a baffle plate. The evaporator body includes refrigerant pipes and fins distributed on the refrigerant pipes. The baffle plate is inserted into the evaporator body and is used to intercept ice layers that fall off the evaporator body. When ice layers fall off the evaporator structure and land on the baffle plate, the baffle plate can effectively block the ice layers, thereby minimizing the accumulation of large amounts of ice layers at the bottom of the evaporator structure and preventing ice blockage in the drip tray. For the ice layers blocked by the baffle plate, the evaporator structure in heat pump defrosting mode can heat the ice layers blocked by the baffle plate, reducing the burden on the electric heating tubes in the drip tray. Since the heat pump system utilizes the reverse Carnot principle, it is more energy-efficient than electric heating. The ice layers blocked by the baffle plate are heated by the refrigerant within the evaporator structure, which helps to improve the heat utilization rate of the heat pump system.

Description

Technical Field

[0001] This application belongs to the field of heat pump system technology, and particularly relates to an evaporator structure, a heat pump system, and a refrigeration device. Background Technology

[0002] During the defrosting process of the refrigerator evaporator, the frost does not remain attached to the evaporator surface until it melts completely. As the defrosting process progresses, some of the frost falls off the evaporator surface in whole pieces due to decreased adhesion and accumulates at the bottom of the evaporator. This increases the burden on the electric heating element at the bottom of the evaporator, which is not conducive to energy saving. Sometimes, the accumulation of ice at the bottom of the evaporator may cause the drain outlet of the water tray below the evaporator to become blocked. Summary of the Invention

[0003] The purpose of this application is to provide an evaporator structure, a heat pump system, and a refrigeration device to improve the technical problem of frost accumulation at the bottom of the evaporator during the defrosting process.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: The first aspect of this application provides an evaporator structure, comprising: The evaporator body includes refrigerant pipes and fins distributed on the refrigerant pipes; An interceptor plate is inserted into the evaporator body. The interceptor plate is used to intercept the ice layer that falls off the evaporator body, so as to absorb the heat of the refrigerant in the evaporator structure when it is in heat pump defrosting mode.

[0005] In this application, by installing a baffle plate inserted into the evaporator body, when ice layers detach from the evaporator structure (when the evaporator structure is used in a heat pump system and operates for a long time, a large amount of frost will accumulate on the evaporator structure; heat pump defrosting can remove the ice layers from the evaporator structure) fall onto the baffle plate, the baffle plate can effectively block the ice layers, thereby minimizing the accumulation of large amounts of ice layers at the bottom of the evaporator structure and preventing ice blockage in the drip tray; in addition, the evaporator structure in heat pump defrosting mode can heat the ice layers blocked by the baffle plate, reducing the burden on the electric heating tubes in the drip tray and reducing the energy consumption of the electric heating tubes; since the heat pump system utilizes the reverse Carnot principle, it is more energy-efficient than electric heating, and the ice layers blocked by the baffle plate are heated by the refrigerant in the evaporator structure, which helps to improve the heat utilization rate of the heat pump system.

[0006] In some implementations, multiple fins are spaced apart along the length of the evaporator body to form a row of fins, and multiple rows of fins are spaced apart along the vertical direction of the evaporator body. Some adjacent rows of fins are interspersed with interceptor plates.

[0007] In this implementation, by limiting the distribution of the fins, interception plates are inserted between some adjacent rows of fins, thereby increasing the effectiveness of the interception plates in blocking ice layers.

[0008] In some implementations, the interceptor plate is a perforated plate structure.

[0009] In this implementation, the interceptor plate is set as a perforated plate structure, which makes the interceptor plate structure simple and easy to process and manufacture.

[0010] In some implementations, strip-shaped holes are provided on the interceptor plate, with the length of the strip-shaped holes extending along the length of the evaporator body; multiple strip-shaped holes are spaced apart along the width of the interceptor plate; and one strip-shaped hole is provided along the length of the interceptor plate.

[0011] In this implementation, the holes on the interceptor plate are set to be strip-shaped holes to minimize the impact of the interceptor plate on the airflow through the evaporator structure and to minimize the impact of the interceptor plate on the heat exchange between the airflow and the evaporator structure; the length direction of the strip-shaped holes extends along the length direction of the evaporator body to better intercept ice layers that detach from the evaporator body.

[0012] In some implementations, strip-shaped holes are provided on the interceptor plate, with the length direction of the strip-shaped holes extending along the length direction of the evaporator body; multiple strip-shaped holes are provided at intervals along the width direction of the interceptor plate; and multiple strip-shaped holes are provided at intervals along the length direction of the interceptor plate.

[0013] In this implementation, the distribution of the strip holes on the interceptor plate makes the interceptor plate form a grid plate, which is conducive to better intercepting the ice layer that detaches from the evaporator body.

[0014] In some implementations, the interceptor plate includes a first region, a second region, and a third region. The length direction of the first region, the second region, and the third region is along the length direction of the interceptor plate, and the first region, the second region, and the third region are arranged sequentially along the width direction of the interceptor plate. The width of the strip hole on the third region is greater than the width of the strip hole on the first region, and the width of the strip hole on the third region is not less than the width of the strip hole on the second region.

[0015] The direction from the first region to the third region can be understood as the side of the evaporator body with relatively less ice accumulation to the side with relatively more ice accumulation. The width of the strip holes in the third region is greater than the width of the strip holes in the first region. Since the volume of ice detached from the rear of the evaporator body will be relatively large, the interceptor plate can intercept the ice layer detached from the evaporator body while also trying to avoid affecting the heat exchange between the airflow and the evaporator structure.

[0016] In some implementations, the width of each slot is the same along the width direction of the interceptor plate.

[0017] In this implementation, the width of each strip hole is set to be the same to facilitate the processing of the interceptor plate.

[0018] In some implementations, there is at least one interceptor plate, and one of the interceptor plates is a top interceptor plate, which is located close to the upper part of the evaporator body along the vertical direction of the evaporator body.

[0019] In this implementation, the top interceptor plate is positioned vertically along the upper part of the evaporator body to prevent ice from falling off the upper part of the evaporator body. This allows the evaporator structure in heat pump defrost mode to heat the ice blocked by the top interceptor plate. The intercepted ice absorbs heat from the upper part of the evaporator body, preventing heat from overflowing into the storage chamber, thus preventing defrost heat waste and reducing temperature fluctuations in the storage chamber. This also makes it less likely for the temperature of the air around the upper part of the evaporator body to reach a preset value (when a temperature detector located above the evaporator structure detects that the temperature above the evaporator body has reached the preset value, it will control the heat pump system to exit defrost mode), thereby delaying the exit time from defrost mode and allowing the evaporator structure to achieve a better defrost effect.

[0020] In some implementations, there is at least one interceptor plate, and one of the interceptor plates is a bottom interceptor plate, which is located close to the bottom of the evaporator body along the vertical direction of the evaporator body.

[0021] In this implementation, by limiting the bottom interceptor plate to be close to the bottom of the evaporator body along the vertical direction of the evaporator body, it is beneficial to achieve the final interception of the ice layer falling off the evaporator body. The ice layer intercepted by the bottom interceptor plate will not fall directly into the water collection pan. The ice layer blocked by the bottom interceptor plate can be heated by the refrigerant in the evaporator structure.

[0022] In some implementations, there is at least one interceptor plate, and one of the interceptor plates is a central interceptor plate located in the central region of the evaporator body along the vertical direction of the evaporator body.

[0023] In this implementation, by limiting the central interceptor plate to be located in the central region of the evaporator body along the vertical direction of the evaporator body, ice layers falling off from the middle and upper parts of the evaporator body can be intercepted. The ice layers blocked by the central interceptor plate can be heated by the refrigerant inside the evaporator structure.

[0024] In some implementations, the width of each strip hole on the central interceptor plate is the same along the width direction of the central interceptor plate.

[0025] A second aspect of this application provides a heat pump system including the evaporator structure provided by any of the above-described technical solutions.

[0026] With the above technical solution, since the heat pump system includes the evaporator structure, the heat pump system has at least all the beneficial effects of the evaporator structure, which will not be elaborated here.

[0027] A third aspect of this application provides a refrigeration device, including the heat pump system provided by any of the above-described technical solutions.

[0028] Since the refrigeration equipment includes the aforementioned heat pump system, it possesses at least all the beneficial effects of the heat pump system, which will not be elaborated further here. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a front view schematic diagram of an evaporator structure provided in some embodiments of this application; Figure 2 This is a schematic diagram of the evaporator structure provided in some embodiments of this application; Figure 3 Schematic diagram of the interceptor plate provided in some embodiments of this application Figure 1 ; Figure 4 Schematic diagram of the interceptor plate provided in some embodiments of this application Figure 2 ; Figure 5 Schematic diagram of the interceptor plate provided in some embodiments of this application Figure 3 ; Figure 6 Schematic diagram of the interceptor plate provided in some embodiments of this application Figure 4 ; Figure 7 Schematic diagram of the interceptor plate provided in some embodiments of this application Figure 5 ; Figure 8 A simplified structural diagram of an evaporator structure installed in a duct, as provided in some embodiments of this application.

[0031] The following are the labeling elements in the figure: 100 - Evaporator structure; 200 - First air duct plate; 300 - Second air duct plate; 400 - Temperature detector; 10 - Evaporator body; 20 - Interception plate; 11-Refrigerant pipe; 12-Fin; 13-First support plate; 14-Second support plate; 111 - First inlet pipe section; 112 - First outlet pipe section; 113 - First transverse pipe section; 114 - Second transverse pipe section; 115 - Bottom transverse pipe section; 116 - First serpentine section; 117 - Second serpentine section; 121 - First upper row fins; 122 - Second upper row fins; 123 - Third upper row fins; 124 - First lower row fins; 125 - Second lower row fins; 126 - Third lower row fins; 21-Top interceptor plate; 22-Middle interceptor plate; 23-Bottom interceptor plate; 24-Strip hole; 25-Rib; 26-Connecting part; 27-Insertion part; 28-First region; 29-Second region; 210-Third region. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be further described in detail below with reference to the accompanying drawings. The embodiments described with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0033] In the description of this application, it should be understood that the terms "length", "width", "thickness", "top", "bottom", "inner", "outer", "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] To facilitate a clear description of the technical solutions of this application, the terms "first" and "second" are used to distinguish identical or similar items with essentially the same function and effect. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and that the terms "first" and "second" do not necessarily imply that they are different.

[0035] In this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] In this application, "and / or" is merely a way of describing the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0037] It should be noted that, in this application, the words "in one embodiment," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in one embodiment," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of words such as "in one embodiment," "exemplarily," and "for example" is intended to present the relevant concepts in a specific manner.

[0038] It should be noted that the technical features of the above embodiments in this application can be combined arbitrarily without conflict. For the sake of brevity, this specification does not describe all possible combinations, but as long as these combinations do not violate the technical spirit of this application, they should all be considered within the scope of this application. Based on the content disclosed in this application, those skilled in the art can reasonably combine, delete, or replace the technical features of the above embodiments according to actual needs, and these modifications and variations all fall within the protection scope of this application.

[0039] It should be noted that, before describing the embodiments of this application, the relevant technologies will be described first.

[0040] For refrigeration equipment such as refrigerators, frost will form on the evaporator surface after long-term use. If the frost is not removed, it will affect the heat exchange between the evaporator and the airflow passing through it, thus affecting the cooling effect of the equipment. Currently, the common method for removing frost from the evaporator surface is a dual heat source approach. One method is to use a heat pump defrosting system, which controls the flow of high-temperature, high-pressure refrigerant discharged from the compressor to the evaporator. The frost on the evaporator absorbs the heat from the refrigerant and melts, thus peeling off the evaporator. The other method is to use electric heating, which involves installing an electric heating element in the drip tray below the evaporator. The icicles peeling off the evaporator fall into the drip tray, and the electric heating element heats the icicles in the drip tray. The water from the melting icicles is then drained through the drain outlet on the drip tray.

[0041] As described above, when using a heat pump for defrosting, the frost does not remain attached to the evaporator surface until it completely melts into water. As the defrosting process progresses, some frost, due to decreased adhesion to the evaporator, will detach from the evaporator surface in whole pieces or strips and accumulate at the bottom of the evaporator. This can easily lead to ice blockage in the drip tray, preventing water from draining out of the drain outlet in time. In addition, while heat pump systems utilize the reverse Carnot cycle, making them more energy-efficient than electric heating, the ice detached from the evaporator cannot absorb heat from the refrigerant inside, resulting in low heat utilization during defrosting. Furthermore, the large amount of ice accumulating at the bottom of the evaporator also increases the burden on the electric heating element, leading to increased energy consumption as the heating element operates for extended periods.

[0042] Based on the above problems, this application provides an evaporator structure, a heat pump system, and a refrigeration device to improve the technical problem of frost accumulation at the bottom of the evaporator during the defrosting process. The embodiments of this application are described below with reference to the accompanying drawings.

[0043] Please see Figures 1-2 , Figure 1 This is a front view schematic diagram of an evaporator structure 100 provided in some embodiments of this application. Figure 2 This is a schematic diagram of the evaporator structure 100 provided in some embodiments of this application. For ease of description, please refer to... Figure 1 and Figure 2 In this embodiment of the application, the length direction (i.e., the horizontal direction) of the evaporator structure 100 is defined as the X-axis direction, the width direction (i.e., the thickness direction) of the evaporator structure 100 is defined as the Y-axis direction, and the height direction (i.e., the vertical direction) of the evaporator structure 100 is defined as the Z-axis direction, wherein the X-axis direction, the Y-axis direction and the Z-axis direction are perpendicular to each other.

[0044] In addition, when describing the evaporator structure 100 in this embodiment, directional terms such as "up", "down", "front", "back", "left", and "right" are used. "Up" refers to the positive direction of the Z-axis, "down" refers to the negative direction of the Z-axis, "front" refers to the positive direction of the Y-axis, "back" refers to the negative direction of the Y-axis, "right" refers to the positive direction of the X-axis, and "left" refers to the negative direction of the X-axis.

[0045] Please see Figure 1 and Figure 2 The evaporator structure 100 provided in this application embodiment includes an evaporator body 10 and an interceptor plate 20 inserted into the evaporator body 10.

[0046] The evaporator body 10 is the main structure of the evaporator structure 100. Please refer to [link / reference]. Figure 1 and Figure 2The evaporator body 10 includes a refrigerant pipe 11 and fins 12 distributed on the refrigerant pipe 11. The refrigerant pipe 11 is used for refrigerant circulation and heat exchange, and the fins 12 are used to expand the heat exchange area and accelerate the heat exchange between the air and the refrigerant.

[0047] Regarding the distribution of fins 12 on refrigerant pipe 11, please refer to some examples. Figure 1 Multiple fins 12 are along the length of the evaporator body 10, i.e. Figure 1 A row of fins is arranged at intervals along the X-axis direction of the evaporator body 10, i.e., along the vertical direction of the evaporator body 10. Figure 1 Multiple rows of fins 12 are spaced apart along the Z-axis. It can be understood that along... Figure 1 There is a gap between two adjacent fins 12 in the X-axis direction, along Figure 1 There is a gap between two adjacent rows of fins in the Z-axis direction.

[0048] Regarding the distribution of fins 12 on refrigerant pipe 11, please refer to other examples. Figure 2 The length direction of the fins 12 is along the vertical direction of the evaporator body 10, i.e. Figure 2 In the Z-axis direction, multiple fins 12 are along the length direction of the evaporator body 10, i.e. Figure 2 The X-axis direction is spaced out, that is, along the length of the evaporator body 10. Figure 2 A row of fins is formed along the X-axis. It can be understood that along... Figure 2 There is a gap between two adjacent fins 12 in the X-axis direction.

[0049] When the evaporator structure 100 provided in this application embodiment is applied to a heat pump system, airflow can be driven to flow through the bottom of the evaporator body 10 to the evaporator body 10, and after heat exchange with the evaporator body 10, the airflow can flow out through the top of the evaporator body 10.

[0050] Please see Figure 1 and Figure 2 The diagram shows the interceptor plate 20, which is inserted into the evaporator body 10 and is used to intercept ice layers that fall off the evaporator body 10.

[0051] The evaporator structure 100 is a component of the heat pump system. The heat pump system operates as follows: High-temperature, high-pressure gaseous refrigerant releases heat in the condenser and becomes high-pressure, medium-temperature liquid refrigerant. At this point, it is cooled and depressurized by a throttling element into a low-temperature, low-pressure two-phase gas-liquid refrigerant. This refrigerant then enters the evaporator structure 100, absorbs heat, and vaporizes into a medium-temperature, low-pressure gaseous refrigerant. It is then compressed by the compressor into a high-temperature, high-pressure gaseous refrigerant, which then flows back to the condenser to allow the heat pump system to operate continuously. Because the refrigerant entering the evaporator structure 100 is at a low temperature, the evaporator structure 100 can absorb heat from the airflow as it flows through, thereby reducing the airflow temperature. It is understood that when the evaporator structure 100 provided in this embodiment is applied to refrigeration equipment such as a refrigerator, the heat pump system can provide cooling to the refrigerator's storage compartments (such as the refrigerator compartment and freezer compartment) through the evaporator structure 100 during operation.

[0052] Since the refrigerant flowing inside the evaporator structure 100 can absorb the heat of the airflow flowing through the evaporator structure 100, the water vapor in the airflow condenses and forms frost on the evaporator structure 100. During long-term use, a large amount of frost will be covered on the evaporator structure 100. In order to ensure the cooling effect of the heat pump system, it is necessary to perform a defrosting operation on the evaporator structure 100.

[0053] In some implementations, a heat pump defrosting method can be used, in which high-temperature, high-pressure gaseous refrigerant output from the compressor is delivered to the evaporator structure 100, and the high-temperature refrigerant melts the frost on the evaporator structure 100. When using a heat pump defrosting method, some frost will not remain attached to the surface of the evaporator structure 100 until it is completely melted. As the defrosting process progresses, some frost will fall off the surface of the evaporator structure 100 in whole pieces or strips due to the decrease in adhesion between the frost and the evaporator structure 100. For the convenience of description below, the whole pieces or strips of ice that fall off the evaporator structure 100 are referred to as ice layers.

[0054] It is understood that, in this embodiment of the application, by setting the interceptor plate 20 inserted into the evaporator body 10, when the ice layer falling off the evaporator structure 100 falls onto the interceptor plate 20, the interceptor plate 20 can block the ice layer, so as to minimize the accumulation of a large amount of ice layer at the bottom of the evaporator structure 100 and prevent the water tray from becoming blocked by ice. In addition, for the ice layer blocked by the interceptor plate 20, the evaporator structure 100 in the heat pump defrosting mode can heat the ice layer blocked by the interceptor plate 20, reducing the burden on the electric heating tube in the water tray and reducing the energy consumption of the electric heating tube. Since the heat pump system uses the reverse Carnot principle, it is more energy-efficient than electric heating. The ice layer blocked by the interceptor plate 20 is heated by the refrigerant in the evaporator structure 100, which helps to improve the heat utilization rate of the heat pump system.

[0055] Regarding the insertion of the interceptor plate 20 into the evaporator body 10, please refer to some embodiments. Figure 1 and Figure 2 An interceptor plate 20 can be provided that is inserted into the gap between the fins 12.

[0056] In this embodiment, by defining that there is at least one interceptor plate 20 inserted in the gap of the fins 12, the ice layer intercepted by the interceptor plate 20 absorbs the heat of the refrigerant in the evaporator body 10.

[0057] Please see Figure 1 and Figure 2 The refrigerant pipe 11 of the evaporator body 10 includes a first inlet pipe section 111 and a first outlet pipe section 112. The first inlet pipe section 111 and the first outlet pipe section 112 are located above each fin 12. Regarding the interceptor plate 20 inserted into the evaporator body 10, in some embodiments, an interceptor plate 20 may be provided that is located above each fin 12 and below the first inlet pipe section 111 and the first outlet pipe section 112.

[0058] Please see Figure 1 and Figure 2 The evaporator body 10 includes a first support plate 13 and a second support plate 14. The first support plate 13 and the second support plate 14 are arranged at a distance from each other and are used to support the refrigerant pipe 11. Regarding the interceptor plate 20 inserted into the evaporator body 10, in some embodiments, at least one interceptor plate 20 may be provided located below each fin 12 and between the first support plate 13 and the second support plate 14.

[0059] In some embodiments, at least two interceptor plates 20 may be provided, and each interceptor plate 20 is inserted into the gap of the fin 12.

[0060] In some embodiments, at least two interceptor plates 20 may be provided, with some interceptor plates 20 inserted into the gap between the fins 12 and some interceptor plates 20 located above each fin 12 and below the first inlet pipe section 111 and the first outlet pipe section 112.

[0061] In some embodiments, at least two interceptor plates 20 may be provided, with some interceptor plates 20 inserted into the gaps between the fins 12 and some interceptor plates 20 located below each fin 12 and between the first support plate 13 and the second support plate 14.

[0062] In some embodiments, at least two interceptor plates 20 may be provided, with some interceptor plates 20 located above each fin 12 and below the first inlet pipe section 111 and the first outlet pipe section 112, and some interceptor plates 20 located below each fin 12 and between the first support plate 13 and the second support plate 14.

[0063] In some embodiments, at least three interceptor plates 20 may be provided. Some interceptor plates 20 are inserted into the gaps between the fins 12. Some interceptor plates 20 are located above each fin 12 and below the first inlet pipe section 111 and the first outlet pipe section 112. Some interceptor plates 20 are located below each fin 12 and between the first support plate 13 and the second support plate 14.

[0064] For the interceptor plate 20 located above each fin 12 and below the first inlet pipe section 111 and the first outlet pipe section 112, please refer to Figure 1 Along the top-to-bottom direction, the topmost row of fins is the first upper row of fins 121. In some embodiments, the interceptor plate 20 located above each fin 12 and below the first inlet pipe section 111 and the first outlet pipe section 112 is attached to the first upper row of fins 121.

[0065] For the interceptor plate 20 located below each fin 12 and between the first support plate 13 and the second support plate 14, please refer to... Figure 1 Along the direction from bottom to top, the bottommost row of fins is the first lower row of fins 124. In some embodiments, the interceptor plate 20 located below each fin 12 and between the first support plate 13 and the second support plate 14 is attached to the first lower row of fins 124.

[0066] It should be noted that the interceptor plate 20 located above each fin 12 and below the first inlet pipe section 111 and the first outlet pipe section 112 can be referred to as the top interceptor plate 21.

[0067] It should be noted that the interceptor plate 20 located below each fin 12 and between the first support plate 13 and the second support plate 14 can be referred to as the bottom interceptor plate 23.

[0068] It should be noted that the following text mainly uses the insertion of the interceptor plate 20 into the gap of the fin 12 as an example to further describe the position of the interceptor plate 20.

[0069] In some embodiments, there is at least one interceptor plate 20, and one of the interceptor plates 20 is the top interceptor plate 21. See [link to documentation]. Figure 1 and Figure 2 The diagram shows the top interceptor plate 21, which is located near the upper part of the evaporator body 10 along the vertical direction of the evaporator body 10.

[0070] Please see Figure 1 and Figure 2The refrigerant pipe 11 of the evaporator body 10 includes a first inlet pipe section 111 and a first outlet pipe section 112, which are located above each fin 12. The free ends of the first inlet pipe section 111 and the first outlet pipe section 112 form a first port and a second port, respectively. When the heat pump system is operating normally for cooling, the low-temperature, low-pressure refrigerant enters the refrigerant pipe 11 from the first port, flows within the refrigerant pipe 11, and finally exits from the second port. Because the low-temperature, low-pressure refrigerant enters the first inlet pipe section 111 first, the temperature of the first inlet pipe section 111 is relatively low, and the first inlet pipe section 111 is relatively more prone to frost formation, meaning that the ice layer on the first inlet pipe section 111 will be relatively thicker.

[0071] Please see Figure 2 The refrigerant pipe 11 of the evaporator body 10 includes a first transverse pipe section 113, which is connected to the first inlet pipe section 111 and has fins 12 distributed on it. The low-temperature and low-pressure refrigerant flows to the first transverse pipe section 113 after passing through the first inlet pipe section 111. Therefore, the temperature of the first transverse pipe section 113 is relatively low, and the first transverse pipe section 113 and the fins 12 distributed on it are relatively more prone to frost formation, that is, the ice layer on the first transverse pipe section 113 and the fins 12 distributed on it will be relatively thicker.

[0072] Since the first transverse pipe section 113, the fins 12 distributed on the first transverse pipe section 113, and the first inlet pipe section 111 are close to the upper part of the evaporator body 10, the upper part of the evaporator body 10 will have a relatively large amount of ice buildup when the heat pump system is running normally and for a long time.

[0073] Therefore, in this embodiment of the application, the top interceptor plate 21 inserted in the gap of the fins 12 is positioned close to the upper part of the evaporator body 10 along the vertical direction of the evaporator body 10, so as to block the ice layer falling off the upper part of the evaporator body 10, so that the evaporator structure 100 in the heat pump defrosting mode can heat the ice layer blocked by the top interceptor plate 21.

[0074] It should also be noted that when the heat pump system is defrosting, high-temperature and high-pressure refrigerant enters through the first outlet pipe section 112. The high temperature of the refrigerant entering the first outlet pipe section 112 causes significant ice shedding from the first outlet pipe section 112.

[0075] Please see Figure 1 and Figure 2The refrigerant pipe 11 of the evaporator body 10 includes a second horizontal pipe section 114. The second horizontal pipe section 114 is connected to the first outlet pipe section 112 and fins 12 are distributed on the second horizontal pipe section 114. When the heat pump system is defrosting, the high-temperature and high-pressure refrigerant flows to the second horizontal pipe section 114 after passing through the first outlet pipe section 112. Therefore, the temperature of the second horizontal pipe section 114 is relatively high, and the second horizontal pipe section 114 and the fins 12 connected to the second horizontal pipe section 114 are more prone to ice shedding.

[0076] Because the second transverse pipe section 114, the fins 12 distributed on the second transverse pipe section 114, and the first outlet pipe section 112 are close to the upper part of the evaporator body 10, ice is more likely to fall off from the upper part of the evaporator body 10 than from other areas when the heat pump system is defrosting.

[0077] If the top interceptor plate 21 is not installed, the ice layer on the top of the evaporator body 10 will fall off first when the heat pump system is defrosting. The heat on the top of the evaporator body 10 may overflow to the storage room through the air duct, resulting in wasted defrosting heat and affecting the temperature of the storage room.

[0078] In this embodiment, by limiting the top interceptor plate 21 inserted in the gap of the fins 12 to be close to the upper part of the evaporator body 10 along the vertical direction of the evaporator body 10, the ice layer falling off the upper part of the evaporator body 10 can be blocked, so that the blocked ice layer can absorb the heat of the upper part of the evaporator body 10, which helps to prevent the heat of the upper part of the evaporator body 10 from overflowing into the storage room, prevent the waste of defrosting heat, and reduce the temperature fluctuation in the storage room.

[0079] It should be noted that a temperature detector 400 is typically installed above the evaporator body 10; please refer to [link / reference]. Figure 1 The diagram roughly illustrates the location of the temperature detector 400. When the heat pump system is defrosting, the temperature detector 400 is used to detect the temperature above the evaporator body 10. When the temperature detector 400 detects that the temperature above the evaporator body 10 has reached the preset value, the control device of the refrigeration equipment determines that the evaporator structure 100 has completed defrosting and then controls the heat pump system to exit the defrosting mode. When the temperature detector 400 detects that the temperature above the evaporator body 10 has not reached the preset value, the control device of the refrigeration equipment controls the heat pump system to continue running the defrosting mode.

[0080] When the heat pump system is defrosting, the ice layer on the upper part of the evaporator body 10 falls off first. The heat from the upper part of the evaporator body 10 heats the surrounding air, causing the air temperature to rise. This causes the temperature detector 400 to detect that the temperature above the evaporator body 10 has reached the preset value, which causes the control device to control the heat pump system to exit the defrosting mode. At this time, there may still be ice layer in the middle and upper parts of the evaporator structure 100. That is, the heat pump system has exited the defrosting mode before the evaporator structure 100 has achieved a good defrosting effect.

[0081] In this embodiment, by limiting the top interceptor plate 21 inserted in the gap of the fins 12 to be close to the upper part of the evaporator body 10 in the vertical direction, the ice layer falling off the upper part of the evaporator body 10 can be blocked, so that the blocked ice layer can absorb the heat of the upper part of the evaporator body 10, making it difficult for the temperature of the air around the upper part of the evaporator body 10 to reach the preset value, thereby delaying the time to exit the defrosting mode, so that the evaporator structure 100 can achieve a better defrosting effect.

[0082] When the evaporator body 10 is as follows Figure 1 In the schematic diagram, when multiple fins 12 are spaced apart along the length of the evaporator body 10 to form a single row of fins, and multiple rows of fins 12 are spaced apart along the vertical direction of the evaporator body 10, the top intercepting plate 21 inserted between the fins 12 is located near the upper part of the evaporator body 10 along the vertical direction of the evaporator body 10. In some embodiments, please refer to [reference needed]. Figure 1 Along the top-to-bottom direction, the topmost row of fins is the first upper row of fins 121, and the row of fins below and adjacent to the first upper row of fins 121 is the second upper row of fins 122. The top interceptor plate 21 is inserted between the first upper row of fins 121 and the second upper row of fins 122.

[0083] When the evaporator body 10 is as follows Figure 1 In the schematic diagram, when multiple fins 12 are spaced apart along the length of the evaporator body 10 to form a single row of fins, and multiple rows of fins 12 are spaced apart along the vertical direction of the evaporator body 10, the top intercepting plate 21 inserted between the fins 12 is located near the upper part of the evaporator body 10 along the vertical direction of the evaporator body 10. In some embodiments, please refer to [reference needed]. Figure 1 Along the top-to-bottom direction, the topmost row of fins is the first upper row of fins 121, the row of fins below and adjacent to the first upper row of fins 121 is the second upper row of fins 122, and the row of fins below and adjacent to the second upper row of fins 122 is the third upper row of fins 123. The top interceptor plate 21 is inserted between the second upper row of fins 122 and the third upper row of fins 123.

[0084] When the evaporator body 10 is as follows Figure 2 In the schematic diagram, when the length direction of the fins 12 is along the vertical direction of the evaporator body 10 and multiple fins 12 are spaced apart along the length direction of the evaporator body 10, the top intercepting plate 21 inserted into the gaps between the fins 12 is close to the upper part of the evaporator body 10 along the vertical direction of the evaporator body 10. In some embodiments, please refer to [reference needed]. Figure 2 The top interceptor plate 21 can be positioned above the first transverse pipe section 113 and the second transverse pipe section 114.

[0085] When the evaporator body 10 is as follows Figure 2 In the schematic diagram, when the length direction of the fins 12 is along the vertical direction of the evaporator body 10 and multiple fins 12 are spaced apart along the length direction of the evaporator body 10, the top interceptor plate 21 inserted in the gap between the fins 12 is close to the upper part of the evaporator body 10 along the vertical direction of the evaporator body 10. In some embodiments, the top interceptor plate 21 may also be located below and close to the first horizontal pipe section 113 and the second horizontal pipe section 114.

[0086] In some embodiments, see Figure 1 and Figure 2 There is at least one interceptor plate 20, and one of the interceptor plates 20 is a bottom interceptor plate 23. The bottom interceptor plate 23 is close to the bottom of the evaporator body 10 along the vertical direction of the evaporator body 10.

[0087] In this embodiment, by limiting the bottom interceptor plate 23 inserted in the gap of the fins 12 to approach the bottom of the evaporator body 10 along the vertical direction of the evaporator body 10, it is beneficial to achieve the final interception of the ice layer falling off the evaporator body 10. The ice layer intercepted by the bottom interceptor plate 23 will not fall directly into the water receiving tray. The ice layer blocked by the bottom interceptor plate 23 can be heated by the refrigerant in the evaporator structure 100.

[0088] When the evaporator body 10 is as follows Figure 1 In the schematic diagram, when multiple fins 12 are spaced apart along the length of the evaporator body 10 to form a row of fins, and multiple rows of fins 12 are spaced apart along the vertical direction of the evaporator body 10, the bottom intercepting plate 23 inserted into the gaps between the fins 12 is close to the bottom of the evaporator body 10 along the vertical direction of the evaporator body 10. In some embodiments, please refer to [reference needed]. Figure 1 Along the direction from bottom to top, the bottommost row of fins is the first lower row of fins 124, and the row of fins above and adjacent to the first lower row of fins 124 is the second lower row of fins 125. The bottom interceptor plate 23 is inserted between the first lower row of fins 124 and the second lower row of fins 125.

[0089] When the evaporator body 10 is as follows Figure 1 In the schematic diagram, when multiple fins 12 are spaced apart along the length of the evaporator body 10 to form a row of fins, and multiple rows of fins 12 are spaced apart along the vertical direction of the evaporator body 10, the bottom intercepting plate 23 inserted into the gaps between the fins 12 is close to the bottom of the evaporator body 10 along the vertical direction of the evaporator body 10. In some embodiments, please refer to [reference needed]. Figure 1 Along the direction from bottom to top, the bottommost row of fins is the first lower row of fins 124, the row of fins above and adjacent to the first lower row of fins 124 is the second lower row of fins 125, and the row of fins above and adjacent to the second lower row of fins 125 is the third lower row of fins 126. The bottom interceptor plate 23 is inserted between the second lower row of fins 125 and the third lower row of fins 126.

[0090] When the evaporator body 10 is as follows Figure 2 In the schematic diagram, when the length direction of the fins 12 is along the vertical direction of the evaporator body 10 and multiple fins 12 are spaced apart along the length direction of the evaporator body 10, the bottom intercepting plate 23 inserted into the gaps between the fins 12 is close to the bottom of the evaporator body 10 along the vertical direction of the evaporator body 10. In some embodiments, please refer to [reference needed]. Figure 2 The refrigerant pipe 11 includes a bottom horizontal pipe section 115. The length of the bottom horizontal pipe section 115 is along the horizontal direction of the evaporator body 10. Relative to the other pipe sections of the refrigerant pipe 11, the bottom horizontal pipe section 115 is the lowest pipe section. A bottom interceptor plate 23 can be set below the bottom horizontal pipe section 115.

[0091] When the evaporator body 10 is as follows Figure 2 In the schematic diagram, when the length direction of the fins 12 is along the vertical direction of the evaporator body 10 and multiple fins 12 are spaced apart along the length direction of the evaporator body 10, the bottom intercepting plate 23 inserted in the gap between the fins 12 is close to the bottom of the evaporator body 10 along the vertical direction of the evaporator body 10. In some embodiments, the bottom intercepting plate 23 may be positioned above and close to the bottom horizontal pipe section 115.

[0092] In some embodiments, there is at least one interceptor plate 20, and one of the interceptor plates 20 is a central interceptor plate 22, which is located in the central region of the evaporator body 10 along the vertical direction of the evaporator body 10.

[0093] In this embodiment, by defining the middle intercepting plate 22 inserted in the gap between the fins 12 as located in the middle region of the evaporator body 10 along the vertical direction of the evaporator body 10, the ice layer falling off in the middle and upper part of the evaporator body 10 can be intercepted. The ice layer blocked by the middle intercepting plate 22 can be heated by the refrigerant in the evaporator structure 100.

[0094] It should be noted that the evaporator body 10 is as follows: Figure 1 When multiple fins 12 are arranged at intervals along the length of the evaporator body 10 to form a row of fins, or multiple rows of fins 12 are arranged at intervals along the vertical direction of the evaporator body 10, if the number of rows of fins 12 is relatively small, such as two or three rows of fins 12, then the top interceptor plate 21, the middle interceptor plate 22, and the bottom interceptor plate 23 are not distinguished.

[0095] It should be noted that the evaporator body 10 is as follows: Figure 2 In the schematic diagram, when the length direction of the fins 12 is along the vertical direction of the evaporator body 10 and multiple fins 12 are spaced apart along the length direction of the evaporator body 10, if the fins 12 are along... Figure 2 When the length in the Z-axis direction is relatively short, such as when the fin 12 is only passed through the first transverse tube segment 113 and the second transverse tube segment 114, then there is no distinction between the top interceptor plate 21, the middle interceptor plate 22 and the bottom interceptor plate 23.

[0096] When the evaporator structure 100 is along Figure 1 and Figure 2 When the length in the Z-axis direction is relatively long, for the interceptor plate 20 inserted between the fins 12, in some embodiments, it includes at least two of the following: a top interceptor plate 21, a bottom interceptor plate 22, and a middle interceptor plate 22. For example, the evaporator structure 100 may include a top interceptor plate 21 and a bottom interceptor plate 23 inserted between the fins 12, or the evaporator structure 100 may include a top interceptor plate 21 and a middle interceptor plate 22 inserted between the fins 12, or the evaporator structure 100 may include a bottom interceptor plate 23 and a middle interceptor plate 22 inserted between the fins 12, or the evaporator structure 100 may include a top interceptor plate 21, a bottom interceptor plate 23, and a middle interceptor plate 22 inserted between the fins 12.

[0097] When the evaporator structure 100 includes a top interceptor plate 21, a bottom interceptor plate 23, and a middle interceptor plate 22 with inserted fins 12, in some embodiments, one top interceptor plate 21, one bottom interceptor plate 23, and one middle interceptor plate 22 may be provided. Alternatively, one top interceptor plate 21 and one bottom interceptor plate 23 may be provided, and at least two middle interceptor plates 22 may be provided, with each middle interceptor plate 22 arranged sequentially at intervals along the vertical direction of the evaporator body 10.

[0098] Please see Figures 3-4 , Figure 3 This is a schematic diagram of the structure of the interceptor plate 20 provided in some embodiments of this application. Figure 4 Another structural schematic diagram of the interceptor plate 20 provided in some embodiments of this application.

[0099] In some embodiments, see Figure 3 The interceptor plate 20 can be configured as a perforated plate structure; or, in other embodiments, please refer to [reference needed]. Figure 4 The interceptor plate 20 can be configured to include a connecting part 26 and an insertion part 27. There are multiple insertion parts 27, and the multiple insertion parts 27 are spaced apart along the length direction of the connecting part 26. The insertion parts 27 can be inserted into the gap between the fins 12.

[0100] In some embodiments, when the evaporator structure 100 includes at least two interceptor plates 20, each interceptor plate 20 may be a perforated plate structure, or each interceptor plate 20 may include a connecting portion 26 and an insertion portion 27, or some interceptor plates 20 may be perforated plate structures, and some interceptor plates 20 may include a connecting portion 26 and an insertion portion 27.

[0101] When the evaporator body 10 is as follows Figure 1 In some embodiments, when multiple fins 12 are arranged at intervals along the length of the evaporator body 10 to form a row of fins, or multiple rows of fins 12 are arranged at intervals along the vertical direction of the evaporator body 10, the intercepting plates 20 inserted into the gaps between the fins 12 can be perforated plate structures, and each intercepting plate 20 is inserted into the gap between the corresponding two rows of fins.

[0102] When the evaporator body 10 is as follows Figure 2 When the fins 12 shown are arranged with their length direction along the vertical direction of the evaporator body 10 and multiple fins 12 are spaced apart along the length direction of the evaporator body 10, each of the intercepting plates 20 corresponding to the inserted fins 12 includes a connecting part 26 and an insertion part 27.

[0103] When the interceptor plate 20 is a perforated plate structure, in some embodiments, the interceptor plate 20 can be completely inserted into the gap between the two rows of fins, in which case the width of the interceptor plate 20 is equal to or less than the width of the evaporator body 10; or, in other embodiments, at least one side of the length edge of the interceptor plate 20 protrudes from the evaporator body 10 along the width direction of the evaporator body 10, in which case the width of the interceptor plate 20 can be greater than the width of the evaporator body 10.

[0104] It should be noted that the following description mainly focuses on the example of the perforated plate structure of the interceptor plate 20.

[0105] In some embodiments, see Figure 3The holes on the interceptor plate 20 are strip-shaped holes 24, and the length direction of the strip-shaped holes 24 extends along the length direction of the evaporator body 10, that is, along... Figure 1 and Figure 2 In the X-axis direction, multiple strip-shaped holes 24 are spaced apart along the width direction of the interceptor plate 20. Please refer to [link / reference]. Figure 3 A strip hole 24 is provided along the length of the interceptor plate 20.

[0106] Please see Figure 3 Between two adjacent strip holes 24 is a rib 25. The length direction of the rib 25 is along the distribution direction of a row of fins. The projection of the gap between two adjacent fins 12 in a row of fins onto the interceptor plate 20 can fall on the rib 25.

[0107] In this embodiment, by setting the holes on the interceptor plate 20 to be strip-shaped holes 24, the interceptor plate 20 is designed to minimize its impact on the airflow through the evaporator structure 100 and to minimize its impact on the heat exchange between the airflow and the evaporator structure 100. By setting the length of the strip-shaped holes 24 to extend along the length of the evaporator body 10, it is easier to intercept ice layers that detach from the evaporator body 10.

[0108] When the number of interceptor plates 20 is at least two, in some embodiments, the strip holes 24 on two adjacent interceptor plates 20 are staggered along the vertical direction of the evaporator body 10.

[0109] For ease of description, the two adjacent interceptor plates 20 are referred to as the first interceptor plate and the second interceptor plate, respectively. The projection of the ribs 25 on the first interceptor plate onto the second interceptor plate falls on the corresponding strip hole 24 of the second interceptor plate, that is, the first interceptor plate and the second interceptor plate are misaligned.

[0110] Please see Figure 5 , Figure 5 This is a schematic diagram of the structure of the interceptor plate 20 provided in some embodiments of this application.

[0111] The embodiments described above depict a strip hole 24 along the length of the interceptor plate 20. For other embodiments, please refer to... Figure 5 Multiple strip holes 24 are spaced apart along the length of the interceptor plate 20, that is, the distribution of the strip holes 24 on the interceptor plate 20 makes the interceptor plate 20 form a grid plate.

[0112] In this embodiment, multiple strip holes 24 are provided at intervals along the length of the interceptor plate 20 to better intercept ice layers that detach from the evaporator body 10.

[0113] It should be noted that some embodiments described above describe the holes on the interceptor plate 20 as strip holes 24. In other embodiments, the holes on the interceptor plate 20 may also be set to be not limited to strip holes 24. For example, the holes on the interceptor plate 20 may also be set to be circular holes, elliptical holes, etc.

[0114] The following description mainly uses the strip hole 24 on the interceptor plate 20 as an example to illustrate the interceptor plate 20 provided in the embodiments of this application.

[0115] In some embodiments, see Figure 3 The interceptor plate 20 includes a first region 28, a second region 29, and a third region 210. The length direction of the first region 28, the second region 29, and the third region 210 is along the length direction of the interceptor plate 20. The first region 28, the second region 29, and the third region 210 are arranged sequentially along the width direction of the interceptor plate 20. The width of the strip hole 24 on the third region 210 is greater than the width of the strip hole on the first region 28, and the width of the strip hole 24 on the third region 210 is not less than the width of the strip hole 24 on the second region 29.

[0116] See some examples. Figure 3 , Figure 3 The diagram illustrates a strip hole 24 on the third region 210. The width of the strip hole 24 on the third region 210 is greater than the width of the strip hole 24 on the first region 28, and the width of the strip hole 24 on the third region 210 is greater than the width of the strip hole 24 on the second region 29. Alternatively, in other examples, the width of the strip hole 24 on the interceptor plate can be set to gradually increase along the direction from the first region 28 to the third region 210.

[0117] Please see Figure 2 The refrigerant pipe 11 of the evaporator body 10 includes a first inlet pipe section 111 and a first outlet pipe section 112. The first inlet pipe section 111 and the first outlet pipe section 112 are located above each fin 12. The refrigerant pipe 11 of the evaporator body 10 also includes a first serpentine section 116 and a second serpentine section 117. The first serpentine section 116 is located behind the second serpentine section 117 along the width direction of the evaporator body 10. One end of the first serpentine section 116 and one end of the second serpentine section 117 are respectively connected to the first inlet pipe section 111 and the first outlet pipe section 112. The first serpentine section 116 and the second serpentine section 117 both form a continuous U-shape. The free ends of the first inlet pipe section 111 and the first outlet pipe section 112 respectively form a first pipe port and a second pipe port. When the heat pump system is running normally for cooling, the low-temperature and low-pressure refrigerant enters the first inlet pipe section 111 from the first pipe port and is discharged from the second pipe port.

[0118] Because the low-temperature, low-pressure refrigerant first enters the first inlet pipe section 111 and the first serpentine section 116, the temperatures of these sections are relatively low, making them more prone to frost formation. Since the first serpentine section 116 is located behind the second serpentine section 117, i.e., along the width of the evaporator body 10, the ice layer behind the evaporator body 10 will be relatively thick. When the heat pump system defrosts, the volume of ice detached from the rear of the evaporator body 10 will be relatively large due to the relatively thick ice layer.

[0119] The direction from the first region 28 to the third region 210 refers to the direction from the front to the rear of the evaporator body 10, or it can be understood as the direction from the side with relatively less ice to the side with relatively more ice on the evaporator body 10. Since the volume of ice detached from the rear of the evaporator body 10 will be relatively large, the width of the strip hole 24 on the third region 210 is set to be greater than the width of the strip hole 24 on the first region 28 and the width of the strip hole 24 on the third region 210 is not less than the width of the strip hole 24 on the second region 29. This ensures that while the interceptor plate 20 can intercept the ice layer detached from the evaporator body 10, it also minimizes the impact of the interceptor plate 20 on the heat exchange between the airflow and the evaporator structure 100.

[0120] When the evaporator body 10 is as follows Figure 1 In some embodiments, when multiple fins 12 are arranged at intervals along the length of the evaporator body 10 to form a row of fins, or multiple rows of fins 12 are spaced apart along the vertical direction of the evaporator body 10, the top interceptor plate 21 includes a first region 28, a second region 29, and a third region 210. The width of the strip hole 24 on the third region 210 is greater than the width of the strip hole 24 on the first region 28, and the width of the strip hole 24 on the third region 210 is not less than the width of the strip hole 24 on the second region 29.

[0121] When the evaporator body 10 is as follows Figure 1 In some embodiments, when multiple fins 12 are arranged at intervals along the length of the evaporator body 10 to form a row of fins, or multiple rows of fins 12 are arranged at intervals along the vertical direction of the evaporator body 10, the bottom interceptor plate 23 includes a first region 28, a second region 29, and a third region 210. The width of the strip hole 24 on the third region 210 is greater than the width of the strip hole 24 on the first region 28, and the width of the strip hole 24 on the third region 210 is not less than the width of the strip hole 24 on the second region 29.

[0122] Please see Figure 6 , Figure 6 This is a schematic diagram of the structure of the interceptor plate 20 provided in some embodiments of this application.

[0123] It should be noted that some embodiments described above include a first region 28, a second region 29, and a third region 210 along the interceptor plate 20. The width of the strip hole 24 on the third region 210 is greater than the width of the strip hole 24 on the first region 28, and the width of the strip hole 24 on the third region 210 is not less than the width of the strip hole 24 on the second region 29. In other embodiments, the width of each strip hole 24 on the interceptor plate 20 is the same along the width direction of the interceptor plate 20, so as to facilitate the processing and forming of the interceptor plate 20.

[0124] When the evaporator body 10 is as follows Figure 1 In some embodiments, when multiple fins 12 are arranged at intervals along the length of the evaporator body 10 to form a row of fins, or multiple rows of fins 12 are arranged at intervals along the vertical direction of the evaporator body 10, the width of each strip hole 24 on the central interceptor plate 22 is the same along the width direction of the central interceptor plate 22.

[0125] When the evaporator body 10 is as follows Figure 1 In some embodiments, when multiple fins 12 are arranged at intervals along the length of the evaporator body 10 to form a row of fins, or multiple rows of fins 12 are arranged at intervals along the vertical direction of the evaporator body 10, the opening area on the middle interceptor plate 22 may be not less than the opening area on the top interceptor plate 21.

[0126] Because the fins 12 in the middle region of the evaporator body 10 are usually designed to be relatively dense, the opening area on the middle interceptor plate 22 is set to be no less than the opening area on the top interceptor plate 21, so as to minimize the impact of the middle interceptor plate 22 on the heat exchange between the airflow and the evaporator structure 100.

[0127] When the evaporator body 10 is as follows Figure 1 In some embodiments, when multiple fins 12 are arranged at intervals along the length of the evaporator body 10 to form a row of fins, or multiple rows of fins 12 are arranged at intervals along the vertical direction of the evaporator body 10, the opening area on the middle interceptor plate 22 may be not less than the opening area on the bottom interceptor plate 23.

[0128] Because the fins 12 in the middle region of the evaporator body 10 are usually designed to be relatively dense, the opening area on the middle interceptor plate 22 is set to be no less than the opening area on the bottom interceptor plate 23, so as to minimize the impact of the middle interceptor plate 22 on the heat exchange between the airflow and the evaporator structure 100.

[0129] For the opening area on the middle interceptor plate 22 to be not less than the opening area on the top interceptor plate 21, in some embodiments, the width of the strip holes 24 on the middle interceptor plate 22 can be not less than the width of the strip hole 24 with the largest width on the top interceptor plate 21. That is, along the width direction of the interceptor plate 22, the number of strip holes 24 on the middle interceptor plate 22 is less than the number of strip holes 24 on the top interceptor plate 21, so that the density of the strip holes 24 on the middle interceptor plate 22 is less than the density of the strip holes 24 on the top interceptor plate 21, so as to avoid the middle interceptor plate 22 affecting the heat exchange between the airflow and the evaporator structure 100, while making the top interceptor plate 21 have a better blocking effect.

[0130] For the opening area on the middle interceptor plate 22 to be not less than the opening area on the bottom interceptor plate 23, in some embodiments, the width of the strip holes 24 on the middle interceptor plate 22 can be not less than the width of the strip hole 24 with the largest width on the bottom interceptor plate 23. That is, along the width direction of the interceptor plate 22, the number of strip holes 24 on the middle interceptor plate 22 is less than the number of strip holes 24 on the bottom interceptor plate 23, so that the density of the strip holes 24 on the middle interceptor plate 22 is less than the density of the strip holes 24 on the bottom interceptor plate 23, so as to avoid the middle interceptor plate 22 from affecting the heat exchange between the airflow and the evaporator structure 100, while making the bottom interceptor plate 23 have a better blocking effect.

[0131] Please see Figure 7 , Figure 7 This is a schematic diagram of the structure of the interceptor plate 20 provided in some embodiments of this application.

[0132] When Figure 7 Multiple strip-shaped holes 24 are spaced apart along the length of the interceptor plate 20. That is, the distribution of the strip-shaped holes 24 on the interceptor plate 20 causes the interceptor plate 20 to form a grid plate. In some embodiments, that is, along the length of the interceptor plate 22, the number of strip-shaped holes 24 on the top interceptor plate 21 is greater than the number of strip-shaped holes 24 on the middle interceptor plate 22. For example, the top interceptor plate 21 can be configured as follows: Figure 5 The shape shown indicates that the middle interceptor plate 22 is configured as follows. Figure 7 The shape shown is such that the density of the strip holes 24 on the middle interceptor plate 22 is less than that on the top interceptor plate 21, so as to minimize the impact of the middle interceptor plate 22 on the heat exchange between the airflow and the evaporator structure 100, while making the top interceptor plate 21 have a better blocking effect.

[0133] When Figure 7Multiple strip-shaped holes 24 are spaced apart along the length of the interceptor plate 20. That is, the distribution of the strip-shaped holes 24 on the interceptor plate 20 causes the interceptor plate 20 to form a grid plate. In some embodiments, that is, along the length of the interceptor plate 22, the number of strip-shaped holes 24 on the bottom interceptor plate 23 is greater than the number of strip-shaped holes 24 on the middle interceptor plate 22. For example, the bottom interceptor plate 23 can be configured as follows: Figure 5 The shape shown indicates that the middle interceptor plate 22 is configured as follows. Figure 7 The shape shown is such that the density of the strip holes 24 on the middle interceptor plate 22 is less than that on the bottom interceptor plate 23, so as to minimize the impact of the middle interceptor plate 22 on the heat exchange between the airflow and the evaporator structure 100, while making the bottom interceptor plate 23 have a better blocking effect.

[0134] This application provides a heat pump system including the evaporator structure 100 provided in any of the above embodiments.

[0135] The evaporator structure 100 is a component of the heat pump system. The heat pump system operates as follows: High-temperature, high-pressure gaseous refrigerant releases heat in the condenser, becoming a high-pressure, medium-temperature liquid refrigerant. This liquid refrigerant is then cooled and depressurized by a throttling element, becoming a low-temperature, low-pressure two-phase gas-liquid refrigerant. It then enters the evaporator structure 100, absorbs heat, and vaporizes into a medium-temperature, low-pressure gaseous refrigerant. This gaseous refrigerant is then compressed by the compressor into a high-temperature, high-pressure gaseous refrigerant, which then flows back to the condenser to ensure continuous operation of the heat pump system. Because the refrigerant entering the evaporator structure 100 is at a low temperature, the evaporator structure 100 can absorb heat from the airflow as it flows through, thereby lowering the airflow temperature.

[0136] It is understood that the heat pump system may include one evaporator structure 100, or the heat pump system may include multiple evaporator structures 100, and the embodiments of this application do not specifically limit the number of evaporator structures 100.

[0137] This application provides a refrigeration device, including the heat pump system provided in any of the above embodiments.

[0138] Regarding the refrigeration equipment, it can be a refrigerator or freezer, etc., and this application does not make specific limitations in the embodiments.

[0139] Please see Figure 8 , Figure 8 A simplified structural diagram of an evaporator structure 100 installed in a duct, according to some embodiments of this application.

[0140] In some embodiments, the refrigeration device includes a first air duct plate 200 and a second air duct plate 300, and an evaporator structure 100 is sandwiched between the first air duct plate 200 and the second air duct plate 300. An interceptor plate 20 may be provided and fixed on the evaporator body 10, or the interceptor plate 20 may be provided and fixed on at least one of the first air duct plate 200 and the second air duct plate 300.

[0141] For example, in some examples, the interceptor plate 20 can be clamped onto the first air duct plate 200 and the second air duct plate 300.

[0142] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An evaporator structure, characterized in that, include: An evaporator body, the evaporator body including refrigerant pipes and fins distributed on the refrigerant pipes; An interceptor plate is inserted into the evaporator body. The interceptor plate is used to intercept the ice layer that falls off the evaporator body so as to absorb the heat of the refrigerant in the evaporator structure when it is in heat pump defrosting mode. The interceptor plate is a perforated plate structure with strip-shaped holes, the length of which extends along the length of the evaporator body. The interceptor plate includes a first region, a second region, and a third region. The length directions of the first region, the second region, and the third region are along the length direction of the interceptor plate. The first region, the second region, and the third region are arranged sequentially along the width direction of the interceptor plate. The width of the strip hole in the third region is greater than the width of the strip hole in the first region, and the width of the strip hole in the third region is not less than the width of the strip hole in the second region; or, the width of each strip hole is the same along the width direction of the interceptor plate.

2. The evaporator structure as described in claim 1, characterized in that, Multiple fins are spaced apart along the length of the evaporator body to form a row of fins, and multiple rows of fins are spaced apart along the vertical direction of the evaporator body. An interceptor plate is inserted between some adjacent rows of fins.

3. The evaporator structure as described in claim 1, characterized in that, A plurality of strip-shaped holes are provided at intervals along the width direction of the interceptor plate; One strip-shaped hole is provided along the length direction of the interceptor plate, or multiple strip-shaped holes are provided at intervals along the length direction of the interceptor plate.

4. The evaporator structure as described in any one of claims 1-3, characterized in that, The interceptor plate is at least one, and one of the interceptor plates is a top interceptor plate, which is located near the upper part of the evaporator body along the vertical direction of the evaporator body.

5. The evaporator structure as described in any one of claims 1-3, characterized in that, The interceptor plate is at least one, and one of the interceptor plates is a bottom interceptor plate, which is located close to the bottom of the evaporator body along the vertical direction of the evaporator body.

6. The evaporator structure according to any one of claims 1-3, characterized in that, The interceptor plate is at least one, and one of the interceptor plates is a central interceptor plate, which is located in the central region of the evaporator body along the vertical direction of the evaporator body.

7. A heat pump system, characterized in that, The evaporator structure includes any one of claims 1-6.

8. A refrigeration device, characterized in that, Includes the heat pump system as described in claim 7.

Images