阅读说明：本技术 多功能制冰机 (Multifunctional ice maker ) 是由 章世燕 于 2020-07-01 设计创作，主要内容包括：本发明提供了一种多功能制冰机,包括制冰的冰盘、四通换向阀、换热套筒、辅助加热器、压缩机、冷凝器、电子水阀、缺水保护器、过滤器、电子膨胀阀、单向阀、上水机构、上水均分器和电磁阀。本发明通过上水均分器设在上水机构和电磁阀之间,实现水流均匀分流至分布在大水平面上的通道中。冷凝器通过电子水阀精确控制,冷却水出水温度达到用户设定温度。本发明通过在制冰机的制冷系统中设置四通换向阀,用于实现制冷系统回路一和制冷系统回路二相互切换,从而实现提高制冰机的脱冰效率,大大提高了制冰机的24小时产冰量,更加节能,且省水,更加经济实用。(The invention provides a multifunctional ice maker, which comprises an ice tray for making ice, a four-way reversing valve, a heat exchange sleeve, an auxiliary heater, a compressor, a condenser, an electronic water valve, a water shortage protector, a filter, an electronic expansion valve, a one-way valve, a water feeding mechanism, a water feeding uniform divider and an electromagnetic valve. According to the invention, the water supply uniform divider is arranged between the water supply mechanism and the electromagnetic valve, so that water flow is uniformly divided into the channels distributed on a large horizontal plane. The condenser is accurately controlled by an electronic water valve, and the outlet water temperature of the cooling water reaches the temperature set by a user. The four-way reversing valve is arranged in the refrigerating system of the ice maker and used for realizing the mutual switching of the refrigerating system loop I and the refrigerating system loop II, so that the ice removing efficiency of the ice maker is improved, the ice production of the ice maker in 24 hours is greatly improved, and the ice maker is more energy-saving, water-saving, more economical and practical.)

1. A multifunctional ice-making machine characterized by: the ice tray ice making machine comprises an ice tray for making ice, a heat exchange sleeve, a compressor, a four-way reversing valve, a condenser, an auxiliary heater, an electronic water valve, a water shortage protector, a filter, an electronic expansion valve, a one-way valve, a water feeding mechanism, a water feeding uniform divider and an electromagnetic valve;

the heat exchange sleeve comprises an outer sleeve and an inner sleeve, and the barrel body of the outer sleeve is sleeved outside the barrel body of the inner sleeve at intervals;

the ice tray, the four-way reversing valve, the inner sleeve, the compressor, the four-way reversing valve, the condenser, the filter, the outer sleeve and the electronic expansion valve are sequentially connected through pipelines to form a first refrigerant loop;

the compressor, the four-way reversing valve, the ice tray, the one-way valve, the filter, the auxiliary heater, the condenser, the four-way reversing valve and the inner sleeve are sequentially connected through a pipeline to form a second refrigerant loop;

the water supply equipartition device is arranged between the water supply mechanism and the electromagnetic valve, and realizes that water flow is evenly distributed to channels distributed on a large horizontal plane through the water supply equipartition device;

the condenser accurately controls the flow of cooling water through an electronic water valve, and the outlet water temperature reaches the temperature set by a user.

2. The multifunctional ice-making machine of claim 1, wherein: the heat exchange sleeve comprises an outer sleeve, an inner sleeve and flow equalizing cavities at two ends, and the barrel body of the outer sleeve is sleeved outside the barrel body of the inner sleeve at intervals; the flow equalizing cavity comprises an annular connecting part and an equalizing hole; the annular connecting part is arranged at the connecting part of the upper end and the lower end of the inner sleeve in the axial direction and the outer sleeve, rotates outwards for 90 degrees along the axial direction of the inner sleeve, and is respectively connected with the outer sleeve and the inner sleeve to form a hollow cavity structure; the flow equalizing holes are uniformly distributed in the circumferential middle position of the annular connecting part and are uniformly distributed.

3. The multifunctional ice-making machine of claim 1, wherein: the upper end of the cylinder body of the outer sleeve is connected with a refrigerant input end of the ice tray through a conveying pipe and an electronic expansion valve; the lower end of the condenser is connected with a refrigerant output end of the condenser through a second conveying pipe; the upper end of the cylinder body of the inner sleeve is connected with the refrigerant output end of the ice tray through an input pipe, and the lower end of the cylinder body of the inner sleeve is connected with the air suction port of the compressor through an output pipe and an air suction pipe.

4. The multifunctional ice-making machine of claim 3, wherein: the output end of the input pipe is arranged at the upper inner part of the inner sleeve, and an included angle for guiding the output refrigerant to spirally flow downwards along the inner wall of the inner sleeve is formed.

5. The multifunctional ice-making machine of claim 3, wherein: the input end of the output pipe extends to the upper part of the cavity of the inner sleeve from bottom to top and is arranged in a staggered manner with the pipe orifice of the input pipe; the input end of the output pipe is obliquely arranged towards the output end of the input pipe and is tightly attached to the input pipe.

6. The multifunctional ice-making machine of claim 3, wherein: the lower pipe wall of the output pipe is also provided with an oil return hole communicated with the inner sleeve, and the oil return hole is arranged at the lower part of the output pipe; the output end of the input tube is inclined at an angle of 15 degrees along the axial direction; the input end of the output pipe has an inclination angle of 10 degrees.

7. The multifunctional ice-making machine of claim 1, wherein: the water-shortage protector is arranged on a water path between the condenser and the electronic water valve.

8. The refrigeration system of the ice maker as set forth in claim 1, wherein: the condenser is also provided with a one-way valve, wherein the one-way valve is connected with the electronic expansion valve in parallel, and the flow direction of the one-way valve is arranged towards the direction of the condenser.

9. The multifunctional ice-making machine of claim 1, wherein: and the auxiliary heater is arranged on the air suction pipe connected with the air suction port of the compressor.

10. The multifunctional ice-making machine of claim 1, wherein: the condenser stores heat when the first refrigerant loop operates and is used as a heat evaporation source of the second refrigerant loop.

Technical Field

The invention relates to the technical field of ice machines, in particular to a multifunctional ice machine.

Background

At present, a gas-liquid separator adopted by an ice maker at the present stage has a simple structure and low efficiency, and a compressor is easy to damage due to liquid impact phenomenon in the ice making process; lubricating oil of the refrigeration compressor is often supplied outwards along with the flowing of the refrigerant and is stored in the gas-liquid separator in a large amount, so that the compressor is not beneficial to effective lubrication under severe working conditions, and the damage rate of the compressor is obviously abnormal; the prior ice-making machine with more capillary throttling has no means to attach the capillary to the suction duct, as shown in fig. 12.

The ice-removing efficiency of the ice machine at the present stage is low, particularly the ice-removing is carried out in a low environment temperature state, the water temperature is low, an external heat source is lacked in a system during ice-removing operation, and the ice-removing efficiency is extremely low. When the ice maker operates in the ice removing state, the first electromagnetic valve is opened, and the refrigerant returns to the compressor through the first electromagnetic valve, the ice tray and the gas-liquid separator. In the process of rough deicing, the condenser is still in a high-pressure state, a large amount of refrigerant is accumulated in the condenser, so that the deicing operation is carried out in a refrigerant-deficient state, and the deicing efficiency is seriously influenced. In addition, in the conventional ice maker with the thermal expansion valve throttling, the thermal expansion valve is gradually opened in the middle and later stages of ice removal operation, a part of refrigerant discharged by the compressor enters an ice tray through the condenser, the filter and the thermal expansion valve, and the part of refrigerant passing through the condenser enters the ice tray and then seriously affects the ice removal efficiency, even causes unsuccessful ice removal, and extremely seriously affects the normal operation of the ice maker, as shown in fig. 13.

Disclosure of Invention

The invention aims to provide a multifunctional ice maker, which aims to improve the energy efficiency and the operation reliability of the ice maker at the present stage, can produce hot water with set temperature required by a user, has multiple functions and saves water resources.

In order to achieve the purpose, the invention is realized by the following technical scheme:

a multifunctional ice maker comprises an ice tray for making ice, a heat exchange sleeve, a compressor, a four-way reversing valve, a condenser, an auxiliary heater, an electronic water valve, a water shortage protector, a filter, an electronic expansion valve, a one-way valve, a water feeding mechanism, a water feeding uniform divider and an electromagnetic valve;

the heat exchange sleeve comprises an outer sleeve and an inner sleeve, and the barrel body of the outer sleeve is sleeved outside the barrel body of the inner sleeve at intervals;

the ice tray, the four-way reversing valve, the inner sleeve, the compressor, the four-way reversing valve, the condenser, the filter, the outer sleeve and the electronic expansion valve are sequentially connected through pipelines to form a first refrigerant loop;

the compressor, the four-way reversing valve, the ice tray, the one-way valve, the filter, the auxiliary heater, the condenser, the four-way reversing valve and the inner sleeve are sequentially connected through a pipeline to form a second refrigerant loop;

the water supply equipartition device is arranged between the water supply mechanism and the electromagnetic valve, and realizes that water flow is evenly distributed to channels distributed on a large horizontal plane through the water supply equipartition device;

the condenser accurately controls the flow of cooling water through an electronic water valve, and the outlet water temperature reaches the temperature set by a user.

As a further improvement of the invention, the heat exchange sleeve comprises an outer sleeve, an inner sleeve and flow equalizing cavities at two ends, and the barrel body of the outer sleeve is sleeved outside the barrel body of the inner sleeve at intervals; the flow equalizing cavity comprises an annular connecting part and an equalizing hole; the annular connecting part is arranged at the connecting part of the upper end and the lower end of the inner sleeve in the axial direction and the outer sleeve, rotates outwards for 90 degrees along the axial direction of the inner sleeve, and is respectively connected with the outer sleeve and the inner sleeve to form a hollow cavity structure; the flow equalizing holes are uniformly distributed in the circumferential middle position of the annular connecting part and are uniformly distributed.

As a further improvement of the invention, the upper end of the cylinder body of the outer sleeve is connected with the refrigerant input end of the ice tray through a conveying pipe and an electronic expansion valve; the lower end of the condenser is connected with a refrigerant output end of the condenser through a second conveying pipe; the upper end of the cylinder body of the inner sleeve is connected with the refrigerant output end of the ice tray through an input pipe, and the lower end of the cylinder body of the inner sleeve is connected with the air suction port of the compressor through an output pipe and an air suction pipe.

As a further improvement of the invention, the output end of the input pipe is arranged at the inner upper position of the inner sleeve, and the input pipe has an included angle for guiding the output refrigerant to spirally flow downwards along the inner wall of the inner sleeve.

As a further improvement of the invention, the input end of the output pipe extends to the upper part of the cavity of the inner sleeve from bottom to top and is arranged in a staggered way with the pipe orifice of the input pipe; the input end of the output pipe is obliquely arranged towards the output end of the input pipe and is tightly attached to the input pipe.

As a further improvement of the invention, the lower pipe wall of the output pipe is also provided with an oil return hole communicated with the inner sleeve, and the oil return hole is arranged at the lower part of the output pipe.

As a further improvement of the invention, the output end of the input pipe is inclined at an angle of 15 ° in the axial direction.

As a further improvement of the invention, the input end of the output pipe is inclined at an angle of 10 degrees.

As a further improvement of the invention, the water shortage protector is also arranged and is arranged on a water path between the condenser and the electronic water valve.

As a further improvement of the invention, the condenser is also provided with a one-way valve, and the one-way valve is connected with the electronic expansion valve in parallel and the flow direction of the one-way valve is arranged towards the direction of the condenser.

As a further improvement of the invention, an auxiliary heater is also arranged, and the auxiliary heater is arranged on the air suction pipe connected with the air suction port of the compressor.

As a further improvement of the invention, the condenser stores heat when the first refrigerant circuit operates and is used as a heat source for evaporation of the second refrigerant circuit.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention is used for realizing the improvement of the effective ice production time of the ice maker, greatly improving the 24h ice production amount of the ice maker and saving more energy by arranging the first refrigerant loop, the second refrigerant loop, the heat storage of the condenser and the auxiliary heater in the multifunctional ice maker.

2. The invention is used for realizing the heat exchange between the refrigerant in the outer sleeve and the refrigerant in the inner sleeve, the gas-liquid efficient separation of the refrigerant in the inner sleeve and the effective oil return of the compressor by arranging the heat exchange sleeve structure of the refrigerant in the multifunctional ice maker, thereby increasing the supercooling degree of the refrigerant entering the electronic expansion valve and greatly increasing the superheat degree of the refrigerant output by the output pipe; flash evaporation gas entering the ice tray is greatly reduced, the heat exchange efficiency of the ice tray is improved, the oil return quantity and the air suction dryness of the compressor are guaranteed, the service life of the compressor is greatly prolonged, and the ice maker is more energy-saving, more economical and practical.

3. According to the invention, the water feeding equipartition device is arranged in the multifunctional ice maker and is arranged between the water feeding mechanism and the electromagnetic valve, so that water flow in the water feeding pipe is uniformly and quickly distributed to the circular hole-shaped channels distributed on the ice tray bottom plate through the water feeding equipartition device, and the ice tray bottom plate is horizontally arranged.

4. The condenser arranged in the multifunctional ice maker can store heat, and the auxiliary heater can heat the air suction pipe and the refrigerant flowing through the air suction pipe, so that quick ice removal is realized, and more energy is saved.

5. The condenser, the electronic water valve and the water shortage protector are arranged in the multifunctional ice maker, the electronic water valve can control the outlet water temperature of the cooling water of the condenser, the outlet water temperature is used for producing hot water with the temperature set by a user for use, the energy is saved, the multifunctional ice maker is multipurpose, and water resources are saved.

6. The system of the invention has rigorous setting, and the structure is skillfully, simply and compactly arranged, thereby greatly improving the practicability of the multifunctional ice maker, not only solving the problems of easy damage of the compressor, low deicing efficiency and the like of the existing ice maker, but also obviously improving the energy efficiency.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a multi-functional ice-making machine system of the present invention;

FIG. 2 is a system diagram of a refrigeration system circuit of the present invention

FIG. 3 is a schematic diagram of a second system of the refrigeration system of the present invention

FIG. 4 is a schematic perspective view of a heat exchange sleeve according to the present invention;

FIG. 5 is a top view of a heat exchange sleeve of the present invention;

FIG. 6 is a side view of a heat exchange sleeve of the present invention;

FIG. 7 is a side view of a heat exchange sleeve of the present invention;

FIG. 8 is a schematic view of the wound auxiliary heating of the air intake pipe of the present invention

FIG. 9 is a schematic view of parallel auxiliary heating of the air intake duct according to the present invention

FIG. 10 is a schematic view of the refrigerant-passing type auxiliary heating of the present invention

FIG. 11 is a top view of the water supply equalizer of the present invention

FIG. 12 is a schematic view of a prior art ice maker capillary throttling system of the present invention;

fig. 13 is a schematic view of a thermal expansion valve throttling system of a prior art ice making machine of the present invention;

the reference numbers in the figures illustrate:

1. an ice tray; 2. a heat exchange sleeve; 21. an outer sleeve; 211. a first conveying pipe; 212. a second conveying pipe; 22. an inner sleeve; 221. an input tube; 222. an output pipe; 2221. an oil return hole; 23. a flow equalizing cavity; 231. an annular connecting portion; 232. a flow equalizing hole; 3. a compressor; 4. a condenser; 5. a filter; 6. an electronic expansion valve; 7. a four-way reversing valve; 8. a water feeding mechanism; 811. an ice tray bottom plate; 812. a water feeding pipe; 9. an electromagnetic valve; 10. a water supply uniform separator; 11. an electronic water valve; 12. a water shortage protector; 13. a one-way valve; 14. an auxiliary heater.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

With reference to fig. 1 to 13, the invention provides a multifunctional ice maker, which aims to improve the energy efficiency and the operation reliability of the ice maker at the present stage, and simultaneously can produce hot water with a temperature set by a user for use, so that the ice maker has multiple purposes and saves water resources.

Specifically, with reference to fig. 1, the multifunctional ice maker includes an ice tray 1 for making ice, a heat exchange sleeve 2, a compressor 3, a condenser 4, a filter 5, an electronic expansion valve 6, a four-way reversing valve 7, an auxiliary heater 14, a one-way valve 13, an electronic water valve 11, a water shortage protector 12, an electromagnetic valve 9, a water feeding mechanism 8 and a water feeding uniform divider 10;

the heat exchange sleeve 2 comprises an outer sleeve 21 and an inner sleeve 22, and the barrel body of the outer sleeve 21 is sleeved outside the barrel body of the inner sleeve 22 at intervals;

the ice tray 1, the four-way reversing valve 7, the inner sleeve 22, the compressor 3, the four-way reversing valve 7, the condenser 4, the filter 5, the outer sleeve 21 and the electronic expansion valve 6 are sequentially connected through pipelines to form a first refrigerant circuit;

the compressor 3, the four-way reversing valve 7, the ice tray 1, the one-way valve 13, the filter 5, the auxiliary heater 14, the condenser 4, the four-way reversing valve 7 and the inner sleeve 22 are sequentially connected through pipelines to form a second refrigerant circuit;

the water feeding equipartition device 10 is arranged between the water feeding mechanism 8 and the electromagnetic valve 9, and water flow is uniformly distributed to channels distributed on a large horizontal plane through the water feeding equipartition device 10;

the condenser 4 accurately controls the flow of cooling water through the electronic water valve 11, and the outlet water temperature reaches the temperature set by a user.

With reference to fig. 2 and 3, the invention realizes the first refrigerant loop and the second refrigerant loop respectively by the combined reversing of the four-way reversing valve 7 and the one-way valve 13 and the connection of the four-way reversing valve and the one-way valve through pipelines, realizes ice making through the first refrigerant loop and realizes ice removal through the second refrigerant loop; the refrigerant in a gas-liquid mixed state at low temperature and low pressure output from the ice tray 1 is input into the inner sleeve 22 of the heat exchange sleeve 2 through the four-way reversing valve 7, heat exchange is carried out between the refrigerant in the outer sleeve 21 and the refrigerant in the inner sleeve due to large temperature difference, the refrigerant further absorbs heat, mixed liquid refrigerant is evaporated into a gas state, then the gas refrigerant at low temperature and low pressure is output from the inner sleeve 22 and enters the compressor 3, and the gas at low temperature and low pressure is compressed into the gas refrigerant at high temperature and high pressure through the compressor; the high-temperature high-pressure gas refrigerant passes through the four-way reversing valve 7 and the condenser 4 and then outputs a high-temperature high-pressure liquid refrigerant; the high-temperature high-pressure liquid refrigerant firstly passes through the filter 5 and then exchanges heat with the mixed refrigerant of the inner sleeve 22 through the outer sleeve 21 of the heat exchange sleeve 2 to be further cooled, and is throttled by the electronic expansion valve 6 to form low-temperature low-pressure liquid refrigerant, and the low-temperature low-pressure liquid refrigerant is directly input into the ice tray 1 to be evaporated and absorbs heat from water to finish ice making because of pressure difference, so that a system cycle of ice making is finished; the refrigerant loop II is switched by the combination of the four-way reversing valve 7 and the one-way valve 13 and can be freely switched with the refrigerant loop I; when the running condition of the refrigerant circuit II is reached, the coil of the four-way reversing valve 7 is electrified, the ice maker enters the refrigerant circuit II to run, the efficiency is greatly improved, and the deicing speed is accelerated.

It should be noted that the opening degree of the electronic expansion valve 6 is controlled to be opened or closed according to the comparison between the difference value between the ice tray outlet temperature and the ice tray inlet temperature and a target value, so that the target area is maintained to be stable, the difference value can be set in a segmented and differentiated manner, liquid is supplied according to the evaporation amount in real time, the system reaction is more timely and accurate, the system has the superior characteristic that a thermal expansion valve cannot match, and conditions are provided for the intelligent control of the system.

The first refrigerant loop, the second refrigerant loop, the condenser 4 for storing heat and the auxiliary heater 14 are arranged in the multifunctional ice maker, so that the ice making time of the ice maker is prolonged effectively, the ice making amount of the ice maker is increased by 24 hours, and the ice making machine is more energy-saving; meanwhile, the water supply distributor 10 is arranged in the multifunctional ice maker and is arranged between the water supply mechanism 8 and the electromagnetic valve 9, the water flow in the water supply pipe 812 is uniformly and quickly distributed to circular hole-shaped channels distributed on the ice tray bottom plate 811 through the water supply distributor 10, and the ice tray bottom plate 811 is horizontally arranged.

With reference to fig. 4, the heat exchange sleeve 2 includes an outer sleeve 21, an inner sleeve 22 and flow equalizing cavities 23 at two ends, and the cylinder body of the outer sleeve 21 is sleeved outside the cylinder body of the inner sleeve 22 at intervals; the flow equalizing cavity 23 includes an annular connecting portion 231 and a flow equalizing hole 232. The annular connecting part 231 is arranged at the connecting part of the upper end and the lower end of the inner sleeve 22 in the axial direction and the outer sleeve 21, rotates outwards for 90 degrees along the axial direction of the inner sleeve 22, and is respectively connected with the outer sleeve 21 and the inner sleeve 22 to form a hollow cavity structure; the flow equalizing holes 232 are uniformly distributed at the circumferential middle position of the annular connecting portion 231 and are uniformly distributed.

The upper end of the cylinder body of the outer sleeve 21 is connected with the refrigerant input end of the ice tray 1 through a first delivery pipe 211 and an electronic expansion valve 6; the lower end of the condenser is connected with the refrigerant output end of the condenser 4 through a second conveying pipe 212; the upper end of the inner sleeve 22 is connected to the refrigerant output end of the ice tray 1 through an input pipe 221, and the lower end is connected to the suction port of the compressor 3 through an output pipe 222 via the suction pipe 14.

With reference to fig. 5, the conveying pipe is arranged in the middle of two ends of the outer sleeve 1; the refrigerant at the lower part enters the hollow cavity of the upper flow equalizing cavity through the second conveying pipe, flows upwards into the hollow cavity structure of the flow equalizing cavity, fills to an overflowing position from bottom to top and overflows from the periphery, so that the liquid medium uniformly flows into a gap between the outer sleeve and the inner sleeve, and the medium heat exchange is more uniformly performed and flows out from bottom to top; meanwhile, the refrigerant at the upper part enters the hollow cavity of the upper flow equalizing mechanism through the peripheral overflow, so that turbulent flow of the refrigerant after heat exchange is realized, and reverse heat exchange is formed between the refrigerant and the refrigerant in the inner cylinder; it should be noted that the invention has the advantages of ingenious structure arrangement, simple and compact structure, realization of turbulent flow of the refrigerant and great improvement of the heat exchange efficiency of the refrigerant.

With reference to fig. 6, the output end of the input pipe 221 is inclined at an angle of 15 ° ± 5 ° in the axial direction; the heat exchange and the gas-liquid separation of input gas are accelerated by inclining the output end to the side wall; meanwhile, the staggered pipe orifices greatly reduce the input mixed gas from entering the output pipe 222, and the purity of the output gas is greatly improved.

The output end of the input pipe 221 is arranged at the inner upper position of the inner sleeve 22, and has an included angle for guiding the output refrigerant to spirally flow downwards along the inner wall of the inner sleeve 22; the input end of the output pipe 222 extends to the upper part of the cavity of the inner sleeve 22 from bottom to top and is arranged in a staggered manner with the pipe orifice of the input pipe 221; the input end of the output pipe 222 extends into the cavity of the inner sleeve 22 and is arranged in a staggered manner with the pipe orifice of the input pipe 221, so that the gas-liquid mixed refrigerant sprayed from the input pipe 221 is prevented from entering the output pipe 222, and the output of the gas refrigerant is greatly improved.

Referring to fig. 7, the input end of the output tube 222 is inclined toward the output end of the input tube 221, and is closely attached to the input tube 221, so that the two tubes are welded into a rigid connection with an integral stroke, thereby reducing the vibration of the pipeline and greatly improving the reliability of the sleeve.

Preferably, the input pipe portion of the output pipe 222 is inclined at an angle of 10 ° in the axial direction.

Preferably, the inlet pipe orifice above the output pipe 222 is higher than the outlet pipe orifice below the input pipe 221.

Preferably, the input pipe 221 and the output pipe 222 are positioned at both sides of the middle position of the inner sleeve 22, respectively.

Preferably, the outer sleeve 21 and the inner sleeve 22 are coaxially spaced; the outer sleeve 21 and the inner sleeve 22 are hollow cavity structures independent of each other.

With reference to fig. 7, an oil return hole 2221 communicated with the inner sleeve 22 is further formed in the lower tube wall of the output tube 222, the oil return hole 2221 is formed in the lower portion of the output tube 222, and the oil return hole 2221 is higher than the lower end flow equalizing cavity 23 and is located 50cm away from the inner bottom surface of the inner sleeve 222; meanwhile, the staggered pipe orifices greatly reduce the direct entering of the output refrigerant of the input pipe 221 into the output pipe 222, and greatly improve the dryness of the output gas; the inclination angle of the input end of the output pipe 222 is 10 degrees, and the output pipe is connected with the input pipe 221, so that the strength of the pipeline is enhanced, and the pipeline vibration is avoided; the hidden trouble of liquid impact of the compressor 3 is solved, the oil return amount of the compressor 3 is ensured, and the service life of the compressor 3 is greatly prolonged.

The heat exchange sleeve 2 is added in the multifunctional ice maker, so that the heat exchange between the refrigerant in the outer sleeve 21 and the refrigerant in the inner sleeve 22, the gas-liquid efficient separation of the refrigerant in the inner sleeve 22 and the effective oil return of the compressor 3 are realized, the supercooling degree of the refrigerant entering the electronic expansion valve 6 is increased by the heat exchange, and the superheat degree of the refrigerant output by the output pipe 222 is also greatly increased; flash evaporation gas entering the ice tray 1 is greatly reduced, the heat exchange efficiency of the ice tray 1 is improved, the oil return amount and the air suction dryness of the compressor 3 are guaranteed, the service life of the compressor 3 is greatly prolonged, and the ice maker is more energy-saving, more economical and practical.

Preferably, a water shortage protector 12 is further arranged, wherein the water shortage protector 12 is arranged on a water path between the condenser 4 and the electronic water valve 11, detects water pressure change and is used for realizing automatic water shortage protection.

Preferably, the condenser 4 is also arranged to store heat when the first refrigerant circuit operates and is used as an evaporation heat source of the second refrigerant circuit, so that the deicing time is greatly shortened, and therefore, the quick deicing is realized, and more energy is saved.

Preferably, an auxiliary heater 14 is further provided, and the auxiliary heater 14 is arranged on a suction pipe 14 connected with a suction port of the compressor 3; according to the invention, the auxiliary heater 14 is added in the multifunctional ice maker, when the refrigerant loop II operates, the auxiliary heater 14 starts to heat the air suction pipe 14 and the refrigerant flowing through the air suction pipe, so that an auxiliary heat source is provided for deicing, the deicing time is greatly shortened, the quick deicing is realized, the energy is saved, and the service life of the compressor 3 is greatly prolonged.

Optionally, in conjunction with fig. 8, the auxiliary heater 14 is wrapped around the outer wall of the air suction pipe 14 to closely adhere to the auxiliary heater.

Optionally, in conjunction with fig. 9, the auxiliary heater 14 is closely attached to the outer wall of the air suction pipe 14 in parallel to assist in heating.

Alternatively, in conjunction with fig. 10, the auxiliary heater 14 employs suction-refrigerant-through type auxiliary heating, and the refrigerant directly flows through the auxiliary heater 14.

With reference to fig. 11, the present invention adds the water-feeding equipartition device 10 between the water-feeding mechanism 8 and the electromagnetic valve 9, and realizes uniform and rapid distribution of water flow in the water-feeding pipe 812 to the circular channels distributed on the ice tray bottom plate 811 by the water-feeding equipartition device 10, and the ice tray bottom plate 811 is horizontally installed.

The system of the invention has rigorous setting, and the structure is skillfully, simply and compactly arranged, thereby greatly improving the practicability of the multifunctional ice maker, not only solving the problems of easy damage of the compressor 3, low deicing efficiency and the like of the existing ice maker, but also obviously improving the energy efficiency.

It should be noted that the detailed description of the invention is not included in the prior art, or can be directly obtained from the market, and the detailed connection mode can be widely applied in the field or daily life without creative efforts, and the detailed description is not repeated here.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.