Regenerative device and ice maker

Abstract

The invention relates to a heat regeneration device and an ice maker, the heat regeneration device is arranged in the ice maker, the ice maker comprises a compressor, a condenser, a throttling device and an evaporator, and the heat regeneration device comprises a supporting piece, a heat exchanger and a heat exchanger, the pipeline assembly comprises a coil pipe fitting, the coil pipe fitting is arranged in the containing cavity, the coil pipe fitting comprises a first refrigerant pipe and a second refrigerant pipe, the second refrigerant pipe is arranged on the peripheral side of the first refrigerant pipe in a sleeving mode to form the coil pipe fitting, the first refrigerant pipe is spirally wound in the radial direction of the first refrigerant pipe, and the first refrigerant pipe is stacked layer by layer in the height direction of the containing cavity. According to the heat regeneration device, the vertical space is effectively utilized, the heat dissipation space can be increased on the premise that the overall size of the ice maker is not increased, heat dissipation of the condenser is facilitated, and the overall heat dissipation efficiency of the ice maker is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of ice-making equipment, and in particular to a heat recovery device and an ice-making machine. Background Art

[0002] An ice maker is a mechanical device that cools water through a refrigeration system to generate ice cubes. In a refrigeration system where a rotary compressor is used as mechanical energy, if there is no heat recovery device, the refrigerant will not evaporate completely, causing the refrigerant to carry liquid, and there is a risk of liquid hammer in the compressor. At present, plate heat exchangers or coil heat regenerators are commonly used as heat recovery devices in the market, which can effectively prevent compressor liquid hammer and improve heat exchange efficiency.

[0003] In the relevant technology, under the same cooling demand, the plate heat exchanger is more expensive than the coil heat exchanger. In the application of the coil heat exchanger, in order to facilitate the connection of the coil with various refrigeration components, the coil heat exchanger is generally placed horizontally, that is, the axial direction of the coil is parallel to the horizontal direction. Since the coil of the coil heat exchanger is spirally wound, the coil is stacked layer by layer along its own axial direction, resulting in a large thickness of the coil heat exchanger. However, the internal layout space of the ice maker is limited, and the coil heat exchanger will inevitably occupy the heat dissipation space of the condenser, thereby affecting the heat dissipation efficiency of the unit. Summary of the invention

[0004] The present application provides a heat recovery device and an ice maker to solve the technical problem that the existing coil heat regenerator is relatively thick and, due to the limited internal layout space of the ice maker, the coil heat regenerator will occupy the heat dissipation space of the condenser, thereby affecting the heat dissipation efficiency of the unit.

[0005] In a first aspect, the present application provides a heat recovery device, which is arranged in an ice maker, the ice maker includes a compressor, a condenser, a throttling device and an evaporator, and the heat recovery device includes:

[0006] A support member, the support member comprising a receiving cavity;

[0007] The pipeline assembly includes a coil member, the coil member is arranged in the accommodating cavity, the coil member includes a first refrigerant tube and a second refrigerant tube, the second refrigerant tube is sleeved on the outer peripheral side of the first refrigerant tube, the first refrigerant tube is spirally coiled along its own radial direction, and adjacent tube sections of the first refrigerant tube are stacked in the height direction of the accommodating cavity;

[0008] Among them, the first refrigerant pipe is used to connect the refrigerant outlet of the condenser and the refrigerant inlet of the throttling device, and an interlayer channel is formed between the outer wall surface of the first refrigerant pipe and the inner wall surface of the second refrigerant pipe. The interlayer channel is used to connect the refrigerant outlet of the evaporator and the air intake of the compressor.

[0009] In a possible implementation manner, a normal line of a radial plane where the coil member is located is parallel to a thickness direction of the support member.

[0010] In a possible implementation, a first end of the first refrigerant pipe is provided with a first bending section, the first bending section is connected to the refrigerant outlet of the condenser, and a second end of the first refrigerant pipe is provided with a second bending section, the second bending section is connected to the refrigerant inlet of the throttling device;

[0011] A first pipe is provided at the first end of the interlayer channel, and the first pipe is connected to the refrigerant outlet of the evaporator. A second pipe is provided at the second end of the interlayer channel, and the second pipe is connected to the air intake of the compressor.

[0012] In a possible implementation, the length of the first refrigerant pipe is greater than 2.7 m, and the length of the second refrigerant pipe is greater than 2.5 m.

[0013] In a possible implementation, the outer diameter of the second refrigerant pipe is set to 10 mm-15 mm.

[0014] In a possible implementation, the outer diameter of the first refrigerant tube is set to 5 mm-8 mm.

[0015] In a possible implementation, the support member includes a first support plate and a second support plate, the first support plate and the second support plate are arranged opposite to each other, the two sides of the first support plate are connected one-to-one with the two sides of the second support plate, and the coil member is fixedly arranged on the first support plate or the second support plate.

[0016] In one possible implementation, the first bend section, which is away from one end of the first refrigerant tube, passes through the first support plate or the second support plate, and extends toward the refrigerant outlet of the condenser; the second bend section, which is away from one end of the first refrigerant tube, passes through the first support plate or the second support plate, and extends toward the refrigerant inlet of the throttling device.

[0017] In a possible implementation, the support member includes a first foam plate and a second foam plate that are arranged opposite to each other, and the first foam plate, the second foam plate, the first support plate and the second support plate are arranged to form a receiving cavity.

[0018] In a possible implementation, the pipeline assembly includes a bracket and a fastener, the bracket is arranged on the side of the first support plate facing the second support plate, or the bracket is arranged on the side of the second support plate facing the first support plate, and a fastener is arranged between the coil and the bracket.

[0019] In a possible implementation, the accommodating cavity is provided with a heat-insulating layer.

[0020] In the second aspect, the present application provides an ice making machine, including a compressor, a condenser, a throttling device, an evaporator and the heat recovery device as described above, the exhaust port of the compressor is connected to the refrigerant inlet of the condenser, the refrigerant outlet of the throttling device is connected to the refrigerant inlet of the evaporator, the first refrigerant pipe of the heat recovery device is used to connect the refrigerant outlet of the condenser and the refrigerant inlet of the throttling device, and the interlayer channel of the heat recovery device is used to connect the refrigerant outlet of the evaporator and the air intake of the compressor.

[0021] In one possible implementation, it includes a box body, a support member of the heat recovery device is longitudinally arranged in the box body to divide the internal space of the box body into a first chamber and a second chamber, a compressor, a condenser and a throttling device are arranged in the first chamber, an evaporator is arranged in the second chamber, and an ice mold is arranged on the evaporator.

[0022] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0023] The heat recovery device and ice maker provided by the embodiment of the present application, the first refrigerant pipe is used to connect the refrigerant outlet of the condenser and the refrigerant inlet of the throttling device, the high-temperature refrigerant circulates in the first refrigerant pipe, the interlayer channel is used to connect the refrigerant outlet of the evaporator and the air intake of the compressor, and the interlayer channel formed between the first refrigerant pipe and the second refrigerant pipe circulates the low-temperature refrigerant. During the normal operation of the heat recovery device, the low-temperature refrigerant can exchange heat with the high-temperature refrigerant, so that the low-temperature refrigerant in the first refrigerant pipe is completely evaporated to form a gaseous refrigerant, thereby preventing the compressor from inhaling liquid, and at the same time, it can reduce the outlet refrigerant temperature of the condenser, improve the high-temperature refrigeration capacity, and improve the energy efficiency of the ice maker. The first refrigerant pipe and the second refrigerant pipe are both arranged in the accommodating cavity of the support, which is conducive to the insulation of the refrigerant, improves the heat exchange efficiency between the low-temperature refrigerant and the high-temperature refrigerant, and further reduces the probability of the compressor inhaling liquid. Since the first refrigerant pipe is spirally coiled along its own radial direction and adjacent pipe sections of the first refrigerant pipe are stacked in the height direction of the accommodating cavity, the coil member effectively utilizes the vertical space and saves the lateral space. Therefore, the thickness of the support member is thinner, thereby saving the lateral arrangement space of the heat recovery device in the ice maker. Without increasing the overall size of the ice maker, the heat dissipation space can be greatly increased, which is beneficial to the heat dissipation of the condenser, thereby ensuring the overall heat dissipation efficiency of the ice maker. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0026] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0027] Figure 1 A structural schematic diagram of an ice maker provided in an embodiment of the present application;

[0028] Figure 2 A schematic diagram of the structure of a heat recovery device provided in an embodiment of the present application;

[0029] Figure 3 for Figure 2 The schematic diagram of the structure of the coil member of the heat recovery device is shown;

[0030] Figure 4 for Figure 1 The schematic diagram of the working principle of the ice maker is shown, wherein the direction of the arrow is the direction of the refrigerant flow.

[0031] Description of reference numerals:

[0032] 100. Ice maker;

[0033] 1. Heat recovery device;

[0034] 11. Support member; 111. Accommodating cavity; 112. First support plate; 113. Second support plate; 114. First foaming plate; 115. Second foaming plate;

[0035] 12. Pipeline assembly; 121. Coil; 1211. First refrigerant pipe; 1212. Second refrigerant pipe; 1213. Interlayer channel; 1214. Radial plane; 122. First bending section; 123. Second bending section; 124. First piping; 125. Second piping; 126. Bracket; 127. Fastener;

[0036] 2. Compressor; 3. Condenser; 4. Throttling device; 5. Evaporator; 51. Ice mold; 6. Fan; 7. Box body; 71. First chamber; 72. Second chamber; 8. Door body; 9. Water pump. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0038] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0039] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0040] In the relevant technology, under the same cooling demand, the plate heat exchanger is more expensive than the coil heat exchanger. In the application of the coil heat exchanger, in order to facilitate the connection of the coil with various refrigeration components, the coil heat exchanger is generally placed horizontally, that is, the axial direction of the coil is parallel to the horizontal direction. Since the coil of the coil heat exchanger is spirally wound, the coil is stacked layer by layer along its own axial direction, resulting in a large thickness of the coil heat exchanger. However, the internal layout space of the ice maker is limited, and the coil heat exchanger will inevitably occupy the heat dissipation space of the condenser, thereby affecting the heat dissipation efficiency of the unit.

[0041] In order to solve the technical problem that the existing coil heat regenerator is relatively thick and, due to the limited internal layout space of the ice maker, the coil heat regenerator will occupy the heat dissipation space of the condenser, thereby affecting the heat dissipation efficiency of the unit, the present application provides a heat recovery device and an ice maker, the thickness of the support is relatively thin, and the overall lateral size of the heat recovery device is relatively small, thereby saving the lateral layout space of the heat recovery device in the ice maker. Without increasing the overall size of the ice maker, the heat dissipation space can be greatly increased, which is beneficial to the heat dissipation of the condenser, thereby ensuring the heat dissipation efficiency of the ice maker.

[0042] like Figure 1 to Figure 2 As shown, a heat recovery device 1 provided in the present application is arranged in an ice maker 100, and the ice maker 100 includes a compressor 2, a condenser 3, a throttling device 4 and an evaporator 5. The heat recovery device 1 includes a support member 11 and a pipeline assembly 12, and the support member 11 includes a receiving chamber 111; the pipeline assembly 12 includes a coil member 121, and the coil member 121 is arranged in the receiving chamber 111. The coil member 121 includes a first refrigerant pipe 1211 and a second refrigerant pipe 1212, and the second refrigerant pipe 1212 is sleeved on the first refrigerant pipe 12 On the outer peripheral side of 11, the first refrigerant pipe 1211 is spirally coiled along its own radial direction, and the adjacent pipe sections of the first refrigerant pipe 1211 are stacked in the height direction of the accommodating chamber 111; wherein, the first refrigerant pipe 1211 is used to connect the refrigerant outlet of the condenser 3 and the refrigerant inlet of the throttling device 4, and an interlayer channel 1213 is formed between the outer wall surface of the first refrigerant pipe 1211 and the inner wall surface of the second refrigerant pipe 1212, and the interlayer channel 1213 is used to connect the refrigerant outlet of the evaporator 5 and the air intake of the compressor 2.

[0043] It can be understood that the first refrigerant pipe 1211 is used to connect the refrigerant outlet of the condenser 3 and the refrigerant inlet of the throttling device 4, and the high-temperature refrigerant circulates in the first refrigerant pipe 1211. The interlayer channel 1213 is used to connect the refrigerant outlet of the evaporator 5 and the air intake of the compressor 2. The interlayer channel 1213 formed between the first refrigerant pipe 1211 and the second refrigerant pipe 1212 circulates low-temperature refrigerant. During the normal operation of the heat recovery device 1, the low-temperature refrigerant can exchange heat with the high-temperature refrigerant, so that the low-temperature refrigerant in the first refrigerant pipe 1211 completely evaporates to form a gaseous refrigerant, thereby preventing the compressor 2 from inhaling liquid, and at the same time, it can reduce the outlet refrigerant temperature of the condenser 3, improve the high-temperature refrigeration capacity, and improve the energy efficiency of the ice maker 100. The first refrigerant pipe 1211 and the second refrigerant pipe 1212 are both arranged in the accommodating cavity 111 of the support member 11, which is conducive to refrigerant insulation, improves the heat exchange efficiency between the low-temperature refrigerant and the high-temperature refrigerant, and further reduces the probability of the compressor 2 inhaling liquid.

[0044] Since the first refrigerant pipe 1211 is spirally coiled along its own radial direction, and adjacent pipe sections of the first refrigerant pipe 1211 are stacked in the height direction of the accommodating chamber 111, the height direction of the accommodating chamber 111 can be the Z direction shown in the figure, and the thickness direction of the accommodating chamber 111 can be the X direction shown in the figure, so that the coil member 121 effectively utilizes the vertical (Z direction) space and saves the lateral (X direction) space. Therefore, the thickness of the support member 11 is relatively thin, thereby saving the lateral arrangement space of the heat recovery device 1 in the ice maker 100. Without increasing the overall size of the ice maker 100, the heat dissipation space can be greatly increased, which is beneficial to the heat dissipation of the condenser 3, thereby ensuring the heat dissipation efficiency of the ice maker 100.

[0045] Furthermore, the exhaust port of the compressor 2 is connected to the refrigerant inlet of the condenser 3, and the refrigerant outlet of the throttling device 4 is connected to the refrigerant inlet of the evaporator 5. A refrigeration cycle loop is formed between the compressor 2, the condenser 3, the throttling device 4 and the evaporator 5. The compressor 2 inhales low-pressure refrigerant from the evaporator 5, raises the refrigerant from low pressure to high pressure, and makes the refrigerant circulate continuously in the refrigeration cycle loop. The refrigerant is condensed into a refrigerant liquid with a higher pressure and a higher temperature in the condenser 3. This part of the refrigerant liquid enters the throttling device 4 through the first refrigerant pipe 1211, and after being throttled by the throttling device 4, it is sent to the evaporator 5. The low-temperature refrigerant of the evaporator 5 exchanges heat with the water on the ice mold 51, so that the water in the ice mold 51 condenses into ice cubes. At the same time, the refrigerant absorbs heat and evaporates in the evaporator 5 to become a refrigerant vapor with a lower pressure. The refrigerant vapor enters the air inlet of the compressor 2 through the interlayer channel 1213 to realize the refrigerant cycle.

[0046] Optionally, the throttling device 4 is used to throttle and reduce the pressure of the high-pressure refrigerant liquid from the condenser 3 to a low-pressure refrigerant liquid, and at the same time adjust the refrigerant flow entering the evaporator 5. When the throttling device 4 is adjusted to the maximum opening, the refrigerant has a maximum flow in the refrigeration pipeline. The throttling device 4 can be but is not limited to: a capillary tube, a throttling short tube, a thermal expansion valve, an electronic expansion valve, a float valve, a throttling orifice plate, a manual expansion valve, etc.

[0047] The coil 121 can be arranged in the receiving cavity 111 of the support member 11 at an angle relative to the horizontal direction, or can be arranged vertically in the receiving cavity 111 of the support member 11. In a preferred embodiment, the normal line of the radial plane 1214 where the coil 121 is located is parallel to the thickness direction of the support member 11, that is, the coil 121 is arranged vertically in the receiving cavity 111 of the support member 11. It can be understood that if Figure 1 and Figure 2As shown, the height direction of the support member 11 can be the Z direction shown in the figure, the thickness direction of the support member 11 can be the X direction shown in the figure, the normal of the radial plane 1214 where the coil member 121 is located is parallel to the thickness direction of the support member 11, and the height direction of the support member 11 is parallel to the vertical direction Z. Then, the lateral occupied space of the heat recovery device 1 can be saved to the greatest extent, thereby greatly optimizing the pipeline layout of the ice maker 100. When the fan 6 of the condenser 3 drives the fan blades to rotate through the motor, a strong airflow is generated. When the airflow passes through the heat dissipation pipe or heat sink of the condenser 3, the heat exchange process between the refrigerant and the surrounding air is accelerated. The airflow will not collide with the messy refrigerant pipe to form turbulence, thereby effectively reducing wind resistance and improving the heat exchange efficiency between the heat dissipation pipe or heat sink of the condenser 3 and the air, which is beneficial to the heat dissipation of the condenser 3, thereby ensuring the heat dissipation efficiency of the ice maker 100.

[0048] Of course, the normal of the radial plane 1214 where the coil 121 is located may also have an angle with the thickness direction of the support member 11, that is, the radial plane 1214 where the coil 121 is located is slightly inclined to the vertical plane, which can be specifically designed according to the internal layout space of the ice maker 100.

[0049] In one embodiment, Figure 3 As shown, the first end of the first refrigerant pipe 1211 is provided with a first bending section 122, and the first bending section 122 is connected to the refrigerant outlet of the condenser 3, and the second end of the first refrigerant pipe 1211 is provided with a second bending section 123, and the second bending section 123 is connected to the refrigerant inlet of the throttling device 4; the first end of the interlayer channel 1213 is provided with a first piping 124, and the first piping 124 is connected to the refrigerant outlet of the evaporator 5, and the second end of the interlayer channel 1213 is provided with a second piping 125, and the second piping 125 is connected to the intake port of the compressor 2. The refrigerant is condensed into a refrigerant liquid with a higher pressure and temperature in the condenser 3. This part of the high-temperature refrigerant liquid discharged from the outlet of the condenser 3 enters the throttling device 4 through the first bending section 122, the first refrigerant pipe 1211 and the second bending section 123 in turn, and is sent to the evaporator 5 after being throttled by the throttling device 4; the low-temperature refrigerant in the evaporator 5 exchanges heat with the water on the ice mold 51, so that the water in the ice mold 51 condenses into ice cubes. At the same time, the refrigerant absorbs heat and evaporates in the evaporator 5 to become a refrigerant vapor with a lower pressure. The refrigerant vapor enters the air inlet of the compressor 2 through the first piping 124, the interlayer channel 1213 and the second piping 125 in turn, thereby realizing the refrigerant circulation.

[0050] Specifically, in a preferred example, the coil fitting 121 includes a first refrigerant tube 1211 and a second refrigerant tube 1212, the second refrigerant tube 1212 is sleeved on the outer peripheral side of the first refrigerant tube 1211, the first refrigerant tube 1211 is spirally coiled along its own radial direction, and adjacent tube sections of the first refrigerant tube 1211 are stacked in the height direction of the accommodating chamber 111, the normal of the radial plane 1214 where the coil fitting 121 is located is parallel to the thickness direction of the support member 11, and the axial direction of the first bent section 122 is perpendicular to the radial plane 1214 where the coil fitting 121 is located, so that the first bent section 122 extends away from one end of the first refrigerant tube 1211 toward the refrigerant outlet of the condenser 3, so that the staff can connect the first bent section 122 and the refrigerant outlet of the condenser 3. The axial direction of the second bending section 123 is perpendicular to the radial plane 1214 where the coil member 121 is located, so that the second bending section 123 is extended away from one end of the first refrigerant tube 1211 toward the refrigerant inlet of the throttling device 4, so that the staff can connect the second bending section 123 and the refrigerant inlet of the throttling device 4. The axial direction of the first piping 124 is perpendicular to the radial plane 1214 where the coil member 121 is located, so that the staff can connect the first piping 124 and the refrigerant outlet of the evaporator 5. The axial direction of the second piping 125 is perpendicular to the radial plane 1214 where the coil member 121 is located, so that the staff can connect the second piping 125 and the air intake of the compressor 2.

[0051] Through the above-mentioned arrangement, it is convenient for the staff to install the pipeline of the heat recovery device 1, and the horizontal space occupied by the heat recovery device 1 can be saved to the greatest extent, thereby greatly optimizing the pipeline layout of the ice maker 100. The fan 6 of the condenser 3 drives the fan blades to rotate through the motor to generate a strong airflow. When the airflow passes through the heat dissipation pipe or heat sink of the condenser 3, it will accelerate the heat exchange process between the refrigerant and the surrounding air. The airflow will not hit the messy refrigerant pipeline to form turbulence, thereby effectively reducing wind resistance and improving the heat exchange efficiency between the heat dissipation pipe or heat sink of the condenser 3 and the air, which is beneficial to the heat dissipation of the condenser 3, thereby ensuring the heat dissipation efficiency of the ice maker 100.

[0052] In an optional example, the normal of the radial plane 1214 where the coil 121 is located is inclined with the thickness direction of the support 11, and the axial direction of the first bent section 122 and the radial plane 1214 where the coil 121 is located have a first angle, which can be an acute angle or an obtuse angle, that is, the axial direction of the first bent section 122 is set to be parallel to the horizontal direction as much as possible, and the axial direction of the second bent section 123 and the radial plane 1214 where the coil 121 is located have a second angle, which can be an acute angle or an obtuse angle, that is, the axial direction of the second bent section 123 is set to be parallel to the horizontal direction as much as possible. Since the condenser 3 is arranged inside the ice maker 100 along the vertical direction, the above arrangement can facilitate the staff to connect the first bent section 122 and the refrigerant outlet of the condenser 3, and to connect the second bent section 123 and the refrigerant inlet of the throttling device 4. Similarly, the evaporator 5 is arranged inside the ice maker 100 along the vertical direction, the axial direction of the first pipe 124 is arranged to be parallel to the horizontal direction as much as possible, the compressor 2 is arranged inside the ice maker along the vertical direction, and the axial direction of the second pipe 125 is arranged to be parallel to the horizontal direction as much as possible.

[0053] It should be noted that the first pipe 124 and the second refrigerant pipe 1212, as well as the second pipe 125 and the second refrigerant pipe 1212, need to be sealed to prevent refrigerant leakage.

[0054] In one embodiment, the length of the first refrigerant pipe 1211 is greater than 2.7m, and the length of the second refrigerant pipe 1212 is greater than 2.5m. In order to set the first pipe 124 and the second pipe 125 on the second refrigerant pipe 1212, therefore, in general, the length of the second refrigerant pipe 1212 is less than the length of the first refrigerant pipe 1211. High-temperature refrigerant flows in the first refrigerant pipe 1211, and the interlayer channel 1213 between the outer wall surface of the first refrigerant pipe 1211 and the inner wall surface of the second refrigerant pipe 1212 flows in the high-temperature refrigerant. By setting the length of the second refrigerant pipe 1212 to be greater than 2.5m, sufficient heat exchange between the high-temperature refrigerant and the low-temperature refrigerant can be ensured, and the high-temperature refrigerant will be effectively cooled, thereby ensuring that the ice making capacity of the ice maker 100 meets 200Kg / 24h.

[0055] In some embodiments, the outer diameter of the second refrigerant pipe 1212 is set to 10mm-15mm. For example, the outer diameter of the second refrigerant pipe 1212 can be set to 12mm, 13mm, 14mm. Preferably, the outer diameter of the second refrigerant pipe 1212 is set to 12mm, the wall thickness is set to 1mm, and the length is set to 2.5m, so as to meet the refrigerant flow required for the normal operation of the ice maker 100 within the designed installation space, and at the same time optimize the pressure drop of the refrigerant pipe network system as much as possible. The larger the outer diameter of the second refrigerant pipe 1212, the lower the pressure drop of the refrigerant pipe network system. At the same time, the thickness of the coil 121 will also be thicker. Therefore, the outer diameter of the second refrigerant pipe 1212 is less than or equal to 15mm, so as to avoid the heat recovery device 1 occupying too much heat dissipation space, thereby ensuring that the condenser 3 has enough heat dissipation space.

[0056] In some embodiments, the outer diameter of the second refrigerant pipe 1212 is set to 5mm-8mm. For example, the outer diameter of the second refrigerant pipe 1212 can be set to 6mm, 7mm, 8mm. Preferably, the outer diameter of the second refrigerant pipe 1212 is set to 12mm, the wall thickness is set to 1mm, and the length is set to 2.5m, so as to meet the refrigerant flow required for the normal operation of the ice maker 100 within the designed installation space, and at the same time optimize the pressure drop of the refrigerant pipe network system as much as possible. The larger the outer diameter of the first refrigerant pipe 1211, the lower the pressure drop of the refrigerant pipe network system. In order to ensure the normal circulation of the low-temperature refrigerant in the interlayer channel 1213, the outer diameter of the second refrigerant pipe 1212 should also be increased accordingly. At the same time, the thickness of the coil 121 will also be thicker. Therefore, the outer diameter of the first refrigerant pipe 1211 is less than or equal to 8mm, so as to avoid the heat recovery device 1 occupying too much heat dissipation space, thereby ensuring that the condenser 3 has enough heat dissipation space.

[0057] In one embodiment, Figure 2 As shown, the support member 11 includes a first support plate 112 and a second support plate 113, the first support plate 112 and the second support plate 113 are arranged opposite to each other, the two sides of the first support plate 112 are connected to the two sides of the second support plate 113 in a one-to-one correspondence, and the coil member 121 is fixedly arranged on the first support plate 112 or the second support plate 113. The first support plate 112 and the second support plate 113 can both be formed by stamping sheet metal parts to improve the structural strength of the support member 11. Specifically, the two sides of the first support plate 112 are bent along the direction close to the accommodating cavity 111, and the two sides of the second support plate 113 are bent along the direction close to the accommodating cavity 111, so that the two sides of the first support plate 112 and the two sides of the second support plate 113 can be connected in a one-to-one correspondence, and the bending part can be fixed by welding connection, or by fasteners such as screws, which will not be described in detail in this application. Of course, the first support plate 112 and the second support plate 113 may also be made of hard plastic plates, solid wood laminated plates or other plates with a certain supporting strength, and this application does not make any specific restrictions here.

[0058] Optionally, the first support plate 112 and the second support plate 113 are arranged opposite to each other in the first direction X, and the radial plane 1214 of the coil member 121 is parallel to the first support plate 112. Therefore, the minimum distance between the first support plate 112 and the second support plate 113 in the first direction X is slightly larger than the outer diameter of the second refrigerant tube 1212, and the coil member 121 can be installed in the accommodating cavity 111. The first refrigerant tube 1211 is spirally coiled along its own radial direction, and the normal line of the radial plane 1214 where the coil member 121 is located is parallel to the thickness direction of the support member 11, so that the thickness of the support member 11 is relatively thin, and the lateral occupied space of the heat recovery device 1 can be saved as much as possible, thereby greatly optimizing the pipeline layout of the ice maker 100, effectively reducing the wind resistance, and improving the heat exchange efficiency between the heat dissipation pipe or heat sink of the condenser 3 and the air, which is beneficial to the heat dissipation of the condenser 3, thereby ensuring the heat dissipation efficiency of the whole machine of the ice maker 100.

[0059] In an optional embodiment, the first bent section 122 passes through the first support plate 112 at one end away from the first refrigerant tube 1211, and extends toward the refrigerant outlet of the condenser 3; the second bent section 123 passes through the first support plate 112 at one end away from the first refrigerant tube 1211, and extends toward the refrigerant inlet of the throttling device 4.

[0060] In an optional embodiment, the first bent section 122 extends through the second support plate 113 at one end away from the first refrigerant tube 1211 and extends toward the refrigerant outlet of the condenser 3; the second bent section 123 extends through the second support plate 113 at one end away from the first refrigerant tube 1211 and extends toward the refrigerant inlet of the throttling device 4.

[0061] It can be understood that the end of the first bending section 122 away from the first refrigerant tube 1211 and the end of the second bending section 123 away from the first refrigerant tube 1211 are located on the same side of the support 11. If the condenser 3 and the throttling device 4 are arranged on the side close to the first support plate 112, then the end of the first bending section 122 away from the first refrigerant tube 1211 and the end of the second bending section 123 away from the first refrigerant tube 1211 both pass through the first support plate 112; if the condenser 3 and the throttling device 4 are arranged on the side close to the second support plate 113, then the end of the first bending section 122 away from the first refrigerant tube 1211 and the end of the second bending section 123 away from the first refrigerant tube 1211 both pass through the second support plate 113. Such a setting not only facilitates the installation of the staff, but also avoids the pressure drop of the refrigerant pipe network system affected by the excessively long path of the pipeline.

[0062] Of course, if the condenser 3 and the throttling device 4 are respectively arranged on both sides of the second support plate 113, then, the end of the first bent section 122 away from the first refrigerant tube 1211 passes through the first support plate 112 and extends to the refrigerant outlet of the condenser 3, and the end of the second bent section 123 away from the first refrigerant tube 1211 passes through the second support plate 113 and extends to the refrigerant inlet of the throttling device 4; or, the end of the first bent section 122 away from the first refrigerant tube 1211 passes through the second support plate 113 and extends to the refrigerant outlet of the condenser 3, and the end of the second bent section 123 away from the first refrigerant tube 1211 passes through the first support plate 112 and extends to the refrigerant inlet of the throttling device 4.

[0063] In some embodiments, the end of the first pipe 124 away from the second refrigerant pipe 1212 passes through the first support plate 112 so that the staff can connect the first pipe 124 and the refrigerant outlet of the evaporator 5, and the end of the second pipe 125 away from the second refrigerant pipe 1212 passes through the first support plate 112 so that the staff can connect the second pipe 125 and the air intake of the compressor 2; or, the end of the first pipe 124 away from the second refrigerant pipe 1212 passes through the second support plate 113 so that the staff can connect the first pipe 124 and the refrigerant outlet of the evaporator 5, and the end of the second pipe 125 away from the second refrigerant pipe 1212 passes through the second support plate 113 so that the staff can connect the second pipe 125 and the air intake of the compressor 2. Or, the end of the first pipe 124 away from the second refrigerant pipe 1212 passes through the first support plate 112, so that the staff can connect the first pipe 124 and the refrigerant outlet of the evaporator 5, and the end of the second pipe 125 away from the second refrigerant pipe 1212 passes through the second support plate 113, so that the staff can connect the second pipe 125 and the air intake of the compressor 2; or, the end of the first pipe 124 away from the second refrigerant pipe 1212 passes through the second support plate 113, so that the staff can connect the first pipe 124 and the refrigerant outlet of the evaporator 5, and the end of the second pipe 125 away from the second refrigerant pipe 1212 passes through the first support plate 112, so that the staff can connect the second pipe 125 and the air intake of the compressor 2. The directions of the first pipe 124 and the second pipe 125 are specifically designed according to the layout positions of the refrigerant outlet of the evaporator 5 and the air intake of the compressor 2.

[0064] In one embodiment, Figure 2As shown, the support member 11 includes a first foam plate 114 and a second foam plate 115 arranged opposite to each other, and the first foam plate 114, the second foam plate 115, the first support plate 112 and the second support plate 113 surround and form a receiving cavity 111. It should be noted that the first foam plate 114 and the second foam plate 115 can be made of polyurethane rigid foam, which is a new synthetic material with heat preservation and waterproof functions, and has a low thermal conductivity of only 0.022W / (m*K)-0.033W / (m*K), which is equivalent to half of the extruded plate and has the lowest thermal conductivity among all insulation materials, so it has excellent insulation performance. The first foam plate 114 and the second foam plate 115 are made of polyurethane rigid foam, which is conducive to the insulation of the refrigerant, improves the heat exchange efficiency of the low-temperature refrigerant and the high-temperature refrigerant, and further reduces the probability of the compressor 2 being sucked with liquid.

[0065] In some embodiments, the coil member 121 is directly welded to a side of the first support plate 112 facing the second support plate 113 , or the coil member 121 is directly welded to a side of the second support plate 113 facing the first support plate 112 .

[0066] In one embodiment, Figure 2 As shown, the pipeline assembly 12 includes a bracket 126 and a fastener 127. The bracket 126 is arranged on the side of the first support plate 112 facing the second support plate 113, or the bracket 126 is arranged on the side of the second support plate 113 facing the first support plate 112. The fastener 127 is arranged between the coil member 121 and the bracket 126. Optionally, in this embodiment, the fastener 127 is a wire tie, and the coil member 121 can be fixedly installed on the bracket 126 by the wire tie. In order to ensure the installation stability of the coil member 121, a plurality of pipe sections of the coil member 121 are fixed to the bracket 126 by wire ties at intervals. Since the adjacent pipe sections of the coil member 121 are stacked in the height direction of the accommodating cavity 111, the adjacent pipe sections of the coil member 121 can also be bundled by wire ties and then fixed to the bracket 126.

[0067] In order to facilitate bundling, the bracket 126 can be set as a U-shaped bracket 126, and bolts are set at both ends of the U-shaped bracket 126, and the U-shaped bracket 126 is fixedly installed on the first support plate 112 by the bolts, or the U-shaped bracket 126 is fixedly installed on the second support plate 113. Of course, in order to ensure the installation stability of the coil member 121, the coil member 121 and the bracket 126 can be fixed by welding.

[0068] Furthermore, a plurality of brackets 126 may be provided, and the plurality of brackets 126 are distributed in an annular manner. In this embodiment, three brackets 126 are provided, and correspondingly, three wire ties are provided. Four, five, or six brackets 126 may also be provided, and the arrangement is specifically based on the length of the coil 121.

[0069] In one example, the accommodating chamber 111 is provided with an insulation layer. Optionally, the insulation layer is formed by foaming and hardening polyurethane, so that the support member 11 has excellent thermal insulation performance. Specifically, the first refrigerant pipe 1211 and the second refrigerant pipe 1212 are pre-buried in the accommodating chamber 111 of the support member 11, and the coil member 121 is fixedly installed on the bracket 126 with a cable tie, and then the accommodating chamber 111 is filled with raw materials such as polyisocyanate and polyether or polyester polyol, surfactant, water, foaming agent, catalyst, other additives, etc., and foamed and hardened at room temperature to form an insulation layer. The insulation layer is beneficial to the insulation of the refrigerant, improves the heat exchange efficiency between the low-temperature refrigerant and the high-temperature refrigerant, and further reduces the probability of the compressor 2 being sucked with liquid.

[0070] like Figure 1 and Figure 4 As shown, an embodiment of the present application provides an ice making machine 100, including a compressor 2, a condenser 3, a throttling device 4, an evaporator 5 and the heat recovery device 1 as described above, the exhaust port of the compressor 2 is connected to the refrigerant inlet of the condenser 3, the refrigerant outlet of the throttling device 4 is connected to the refrigerant inlet of the evaporator 5, the first refrigerant pipe 1211 of the heat recovery device 1 is used to connect the refrigerant outlet of the condenser 3 and the refrigerant inlet of the throttling device 4, and the interlayer channel 1213 of the heat recovery device 1 is used to connect the refrigerant outlet of the evaporator 5 and the air intake of the compressor 2.

[0071] The first refrigerant pipe 1211 is used to connect the refrigerant outlet of the condenser 3 and the refrigerant inlet of the throttling device 4. The high-temperature refrigerant circulates in the first refrigerant pipe 1211. The interlayer channel 1213 is used to connect the refrigerant outlet of the evaporator 5 and the air intake of the compressor 2. The interlayer channel 1213 formed between the first refrigerant pipe 1211 and the second refrigerant pipe 1212 circulates the low-temperature refrigerant. During the normal operation of the heat recovery device 1, the low-temperature refrigerant can exchange heat with the high-temperature refrigerant, so that the low-temperature refrigerant in the first refrigerant pipe 1211 completely evaporates to form a gaseous refrigerant, thereby preventing the compressor 2 from inhaling liquid, and at the same time, it can reduce the outlet refrigerant temperature of the condenser 3 and improve the high-temperature refrigeration capacity. The first refrigerant pipe 1211 and the second refrigerant pipe 1212 are both arranged in the accommodating cavity 111 of the support member 11, which is conducive to the insulation of the refrigerant, improves the heat exchange efficiency between the low-temperature refrigerant and the high-temperature refrigerant, and further reduces the probability of the compressor 2 inhaling liquid. Since the first refrigerant pipe 1211 is spirally coiled along its own radial direction, and adjacent pipe sections of the first refrigerant pipe 1211 are stacked in the height direction of the accommodating chamber 111, the height direction of the accommodating chamber 111 can be the Z direction shown in the figure, and the thickness direction of the accommodating chamber 111 can be the X direction shown in the figure, so that the coil member 121 effectively utilizes the vertical space and saves the lateral space. Therefore, the thickness of the support member 11 is thinner, and the overall lateral dimension of the heat recovery device 1 is smaller, thereby saving the lateral arrangement space of the heat recovery device 1 in the ice maker 100. Without increasing the overall size of the ice maker 100, the heat dissipation space can be greatly increased, which is beneficial to the heat dissipation of the condenser 3, thereby ensuring the heat dissipation efficiency of the ice maker 100.

[0072] In one embodiment, Figure 1As shown, the ice maker 100 further includes a box body 7, a support member 11 of the heat recovery device 1 is longitudinally arranged in the box body 7 to divide the internal space of the box body 7 into a first chamber 71 and a second chamber 72, a compressor 2, a condenser 3 and a throttling device 4 are arranged in the first chamber 71, an evaporator 5 is arranged in the second chamber 72, and an ice mold 51 is arranged on the evaporator 5. The low-temperature refrigerant of the evaporator 5 exchanges heat with the water on the ice mold 51, so that the water in the ice mold 51 condenses into ice cubes. In this embodiment, since the condenser 3 and the throttling device 4 are arranged on a side close to the first support plate 112, the end of the first bent section 122 away from the first refrigerant tube 1211 and the end of the second bent section 123 away from the first refrigerant tube 1211 both pass through the first support plate 112, so that the staff can connect the first bent section 122 with the refrigerant outlet of the condenser 3, and connect the second bent section 123 with the refrigerant inlet of the throttling device 4; the refrigerant outlet of the evaporator 5 and the air intake of the compressor 2 are both arranged in the first chamber 71, the end of the first piping 124 away from the second refrigerant tube 1212 passes through the first support plate 112, and the end of the second piping 125 away from the second refrigerant tube 1212 passes through the first support plate 112, so that the staff can connect the first piping 124 with the refrigerant outlet of the evaporator 5, and connect the second piping 125 with the air intake of the compressor 2.

[0073] Furthermore, the ice mold 51 may be provided with at least one ice-making groove for accommodating water or ice cubes. The number of ice-making grooves may be multiple, and the multiple ice-making grooves are distributed along the length direction of the ice mold 51 itself.

[0074] Optionally, a door body 8 is provided on the side of the box body 7 facing the user, and a foam board is provided inside the door body 8, so as to achieve a good thermal insulation effect. The foam board can also be made of polyurethane rigid foam, which is a new synthetic material with thermal insulation and waterproof functions. Its thermal conductivity is low, only 0.022W / (m*K)-0.033W / (m*K), which is equivalent to half of the extruded board and has the lowest thermal conductivity among all thermal insulation materials, so it has excellent thermal insulation performance.

[0075] Furthermore, the ice maker 100 also includes a fan 6, which is arranged in the first cavity. The fan 6 drives the fan blades to rotate through the motor to generate a strong airflow. When the airflow passes through the heat dissipation pipe or heat sink of the condenser 3, it will accelerate the heat exchange process between the refrigerant and the air in the first chamber 71. Since the first refrigerant pipe 1211 and the second refrigerant pipe 1212 are both pre-buried in the support 11, the airflow will not collide with the messy refrigerant pipelines to form turbulence, thereby effectively reducing wind resistance and improving the heat exchange efficiency between the heat dissipation pipe or heat sink of the condenser 3 and the air, which is beneficial to the heat dissipation of the condenser 3, thereby ensuring the heat dissipation efficiency of the ice maker 100.

[0076] In one embodiment, Figure 1As shown, the ice maker 100 also includes a water system, which includes a water inlet valve, a water pump 9 and a water inlet pipe. The water pump 9 is arranged in the second chamber 72. The water pump 9 is connected to the ice mold 51 through the water inlet pipe for conveying water to the ice mold 51.

[0077] Optionally, the ice maker 100 further includes a water receiving tray, which is disposed below the evaporator 5. The water receiving tray is connected to the external environment through a drain pipe, and a drain valve is disposed on the drain pipe. The water receiving tray can collect condensed water from the evaporator 5. If the amount of water in the water receiving tray exceeds the maximum amount of water received, the water can be discharged through the drain valve.

[0078] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0079] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0080] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features applied for herein.

Claims

1. A heat recovery device, arranged in an ice maker, the ice maker comprising a compressor, a condenser, a throttling device and an evaporator, characterized in that: The heat recovery device comprises: A support member, wherein the support member includes a receiving cavity; A pipe assembly, comprising a coil member, the coil member is arranged in the accommodating cavity, the coil member comprises a first refrigerant tube and a second refrigerant tube, the second refrigerant tube is sleeved on the outer peripheral side of the first refrigerant tube, the first refrigerant tube is spirally coiled along its own radial direction, and adjacent tube sections of the first refrigerant tube are stacked in the height direction of the accommodating cavity; Among them, the first refrigerant pipe is used to connect the refrigerant outlet of the condenser and the refrigerant inlet of the throttling device, and an interlayer channel is formed between the outer wall surface of the first refrigerant pipe and the inner wall surface of the second refrigerant pipe, and the interlayer channel is used to connect the refrigerant outlet of the evaporator and the air intake of the compressor.

2. The heat recovery device according to claim 1, characterized in that: The normal line of the radial plane where the coil member is located is parallel to the thickness direction of the accommodating cavity.

3. The heat recovery device according to claim 1 or 2, characterized in that: The first end of the first refrigerant tube is provided with a first bending section, the first bending section is connected to the refrigerant outlet of the condenser, and the second end of the first refrigerant tube is provided with a second bending section, the second bending section is connected to the refrigerant inlet of the throttling device; A first pipe is provided at the first end of the interlayer channel, and the first pipe is connected to the refrigerant outlet of the evaporator. A second pipe is provided at the second end of the interlayer channel, and the second pipe is connected to the air intake port of the compressor.

4. The heat recovery device according to claim 2, characterized in that: The length of the first refrigerant pipe is greater than 2.7 m, and the length of the second refrigerant pipe is greater than 2.5 m.

5. The heat recovery device according to claim 1, characterized in that: The outer diameter of the second refrigerant pipe is set to 10mm-15mm.

6. The heat recovery device according to claim 1, characterized in that: The outer diameter of the first refrigerant tube is set to 5mm-8mm.

7. The heat recovery device according to claim 3, characterized in that: The support member includes a first support plate and a second support plate, the first support plate and the second support plate are arranged opposite to each other, two sides of the first support plate are connected to two sides of the second support plate in a one-to-one correspondence, and the coil member is fixedly arranged on the first support plate or the second support plate.

8. The heat recovery device according to claim 7, characterized in that: The end of the first bending section away from the first refrigerant tube passes through the first support plate or the second support plate, and extends to the refrigerant outlet of the condenser; the end of the second bending section away from the first refrigerant tube passes through the first support plate or the second support plate, and extends to the refrigerant inlet of the throttling device.

9. The heat recovery device according to claim 7, characterized in that: The support member includes a first foaming plate and a second foaming plate that are arranged opposite to each other, and the first foaming plate, the second foaming plate, the first support plate and the second support plate surround the accommodating cavity.

10. The heat recovery device according to claim 7, characterized in that: The pipeline assembly includes a bracket and a fastener. The bracket is arranged on the side of the first support plate facing the second support plate, or the bracket is arranged on the side of the second support plate facing the first support plate. A fastener is arranged between the coil and the bracket.

11. The heat recovery device according to claim 1, characterized in that: The accommodating cavity is provided with a heat-insulating layer.

12. An ice making machine, characterized in that: It includes a compressor, a condenser, a throttling device, an evaporator and a heat recovery device as described in any one of claims 1 to 11, the exhaust port of the compressor is connected to the refrigerant inlet of the condenser, the refrigerant outlet of the throttling device is connected to the refrigerant inlet of the evaporator, the first refrigerant pipe of the heat recovery device is used to connect the refrigerant outlet of the condenser and the refrigerant inlet of the throttling device, and the interlayer channel of the heat recovery device is used to connect the refrigerant outlet of the evaporator and the air intake of the compressor.

13. The ice making machine according to claim 12, characterized in that: It comprises a box body, in which the support of the heat recovery device is longitudinally arranged in the box body to divide the internal space of the box body into a first chamber and a second chamber, the compressor, the condenser and the throttling device are arranged in the first chamber, the evaporator is arranged in the second chamber, and an ice mold is arranged on the evaporator.

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