CN108151440B

CN108151440B - Cold drink machine

Info

Publication number: CN108151440B
Application number: CN201711441021.7A
Authority: CN
Inventors: 廖宝林; 王一鸣; 门书标
Original assignee: Sanhua Hangzhou Micro Channel Heat Exchanger Co Ltd
Current assignee: Sanhua Hangzhou Micro Channel Heat Exchanger Co Ltd
Priority date: 2017-12-27
Filing date: 2017-12-27
Publication date: 2020-07-28
Anticipated expiration: 2037-12-27
Also published as: CN108151440A

Abstract

A cold drink machine comprises a refrigerating device and a cold and hot circulating system matched with the refrigerating device. The cold and hot circulating system comprises a compressor, a first heat exchanger, a throttling device and a second heat exchanger which are sequentially arranged on the same loop. The refrigerating device is provided with a first cavity, a second cavity, a partition wall for separating the first cavity from the second cavity and secondary refrigerant contained in the first cavity, the first cavity is not communicated with the second cavity, the second heat exchanger is arranged in the first cavity and soaked in the secondary refrigerant, and the secondary refrigerant and the second heat exchanger carry out heat exchange to absorb cold energy and then transmit the cold energy into the second cavity through the partition wall. So set up for the refrigerating plant's of cold drink machine heat transfer area increase, heat exchange efficiency is high, and it is fast to refrigerate.

Description

Cold drink machine

Technical Field

The invention relates to the field of electric appliances, in particular to a cold drink machine.

Background

The trend toward faster cooling rates and economies of scale has been the subject of increasing research on how to make rapidly cooled coolers.

In the related art, the cold drink machine mainly transfers cold to a substance to be cooled through multi-layer solid-solid transfer, and the heat conduction contact area is limited in the process, namely, the cold resistance of cold transfer is large, so that the cold transfer effect is not high.

Disclosure of Invention

The invention aims to provide a cold drink machine with large heat transfer contact area.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a cold drink machine, including refrigerating plant and with refrigerating plant complex cold and hot circulation system, cold and hot circulation system is including setting gradually compressor, first heat exchanger, throttling arrangement and the second heat exchanger in same return circuit, refrigerating plant has first cavity, second cavity, will first cavity with second cavity divided partition wall and accept in secondary refrigerant in the first cavity, first cavity with the second cavity does not communicate, the second heat exchanger install in the first cavity and soak in secondary refrigerant, secondary refrigerant with the second heat exchanger carry out the heat exchange and absorb behind the cold volume through the partition wall to the cold volume is transmitted in the second cavity.

As a further improved technical solution of the present invention, the refrigeration apparatus further includes a pump disposed in the first chamber and a nozzle connected to the pump, the pump pumps the secondary refrigerant to the nozzle, and the nozzle sprays the secondary refrigerant to the partition wall.

As a further improvement of the invention, the coolant is in direct contact with the partition wall.

As a further improved technical solution of the present invention, the refrigeration device is provided with an upper container and a lower container vertically matched with the upper container, the upper container has an inner cavity, the second cavity surrounding the periphery of the inner cavity, and an inner wall radially separating and not communicating the inner cavity and the second cavity, the lower container is provided with an accommodating cavity with an upward opening, the accommodating cavity is vertically communicated with the inner cavity to form the first cavity, and the accommodating cavity is not communicated with the second cavity.

As a further improved technical scheme of the invention, the lower container is provided with a cavity wall surrounding the periphery of the accommodating cavity and a cavity bottom wall positioned at the bottom of the accommodating cavity, the secondary refrigerant is accommodated in the accommodating cavity, the pump is accommodated in the accommodating cavity, and the spray head is arranged in the inner cavity.

As a further improved technical solution of the present invention, the refrigeration device is further provided with a top wall for sealing the top of the first chamber, the top of the inner cavity is sealed by the top wall, the upper container is further provided with a bottom wall for sealing the bottom of the second chamber, and the bottom wall is connected with the inner wall and forms the partition wall for separating the first chamber from the second chamber together.

As a further improved technical solution of the present invention, the refrigeration device is further provided with an outer wall surrounding the outer periphery of the second chamber and at least two partition plates dividing the second chamber into at least two independent chambers, and each partition plate connects the outer wall and the inner wall.

As a further improved technical scheme of the invention, the refrigerating device is also provided with an outer wall surrounding the periphery of the second chamber and a delivery pipe penetrating through the outer wall and communicated with the second chamber, and a control valve for controlling the on-off of the delivery pipe is arranged in the delivery pipe.

As a further improved technical scheme of the invention, the spray head is provided with a plurality of spray holes which are arranged in a radial surrounding mode.

As a further improved technical solution of the present invention, the refrigeration apparatus further includes a temperature sensor disposed in the first chamber for detecting the temperature of the coolant, the temperature sensor has a first predetermined temperature and a second predetermined temperature, when the temperature of the coolant is lower than the first predetermined temperature, the cooling-heating circulation system stops operating, and when the temperature of the coolant is higher than the second predetermined temperature, the cooling-heating circulation system starts operating.

As a further improved technical scheme of the invention, the secondary refrigerant is a food-grade secondary refrigerant with low freezing point or a conventional secondary refrigerant.

According to the technical scheme, the cold drink machine refrigerates the secondary refrigerant through the cold and hot circulating system, and cold energy is transferred to the second chamber through the direct contact of the secondary refrigerant and the partition wall, so that the contact area for cold energy transfer is increased, the transfer path in the cold energy transfer process is reduced, and the rapid cooling of the drink to be cooled in the second chamber of the cold drink machine is achieved.

Drawings

Fig. 1 is a schematic perspective view of the cooler of the present invention.

Fig. 2 is a schematic perspective view of the cooler of the present invention from another angle.

Fig. 3 is a top view of the cooler of the present invention with the top wall removed at yet another angle.

Fig. 4 is a perspective exploded view of the container of the refrigeration unit of the cooler of the present invention.

Fig. 5 is a schematic perspective exploded view of another angle of the container of the refrigeration unit of the cooler of the present invention.

Reference numerals: 100-cold drink machine; 1-a refrigeration device; 11-upper container; 110-lumen; 111-inner wall; 112-a second chamber; 1121-a chamber; 113-an outer wall; 114-a top wall; 115-a bottom wall; 116-a connecting wall; 1161-a first wall; 1162-a second wall; 117-delivery tube; 12-a lower container; 120-a housing chamber; 121-chamber wall; 122-chamber bottom wall; 1221-a through-hole; 1122-a separator; 123-end wall; 13-a pump; 14-a spray head; 141-an injection hole; 15-a coolant; 2-a cold and hot circulating system; 21-a compressor; 22-a first heat exchanger; 23-a throttling device; 24-a second heat exchanger; a fan-25.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 5, a cooler 100 is shown, wherein the cooler 100 includes a refrigeration device 1 and a cooling-heating circulation system 2 cooperating with the refrigeration device 1. The cooling-heating circulation system 2 includes a compressor 21, a first heat exchanger 22, a throttling device 23 and a second heat exchanger 24 which are connected by pipelines. The compressor 21, the first heat exchanger 22, the throttling device 23 and the second heat exchanger 24 are sequentially arranged on the same loop, so that the heating cycle and the refrigerating cycle are conveniently realized.

In the present invention, the first heat exchanger 22 is a condenser, the second heat exchanger 24 is an evaporator, a fan 25 is further disposed beside the first heat exchanger 22, and the fan 25 is used to dissipate hot air around the first heat exchanger 22.

The refrigerating apparatus 1 includes a container (not numbered), a pump 13 installed in the container, a spray head 14 connected to the pump 13 through a pipe, a coolant 15 contained in the container, and a temperature sensor (not shown) for detecting a temperature of the coolant 15. The container comprises an upper container 11 and a lower container 12 which is matched with the upper container 11 up and down. The temperature sensor is in signal connection with the cold and hot circulating system 2. The material of the upper container 11 is 304 stainless steel or plastic.

The lower container 12 has an accommodating chamber 120 with an upward opening, a chamber wall 121 surrounding the outer periphery of the accommodating chamber 120, a chamber bottom wall 122 at the bottom of the accommodating chamber 120, and an end wall 123 at the top of the chamber wall 121. Two through holes 1221 which penetrate through the cavity bottom wall 122 from top to bottom are formed. The coolant 15 is accommodated in the accommodating chamber 120. The second heat exchanger 24 of the cold and hot circulating system 2 passes through the two through holes 1221 and is installed in the accommodating cavity 120, and is soaked in the secondary refrigerant 15, so that the contact area between the secondary refrigerant 15 and the second heat exchanger 24 is fully increased, and the efficiency of energy transfer is improved. In other embodiments, the cavity wall 121 may be formed on the same surface

The upper container 11 has a cylindrical inner cavity 110 with a downward opening, an inner wall 111 surrounding the inner cavity 110, a second chamber 112 surrounding the outer periphery of the inner wall 111 and not communicated with the inner cavity 110, an outer wall 113 surrounding the periphery of the second chamber 112, a top wall 114 closing the top of the inner cavity 110, a bottom wall 115 closing the bottom of the second chamber 112, and a connecting wall 116 connecting the outer wall 113 and the bottom wall 115. The inner wall 111 radially separates and does not communicate the inner cavity 110 with the second chamber 112. The bottom wall 115 is connected to the connecting wall 116 and the inner wall 111 inside and outside in a circular ring shape, and vertically separates the accommodating cavity 120 from the second chamber 112, and the bottom surface of the bottom wall 115 is directly contacted with the coolant 15 accommodated in the accommodating cavity 120. The second chamber 112 is open at an upper end to receive a beverage such as water or juice. The inner cavity 110 and the accommodating cavity 120 are communicated with each other up and down to form a first chamber (not numbered). The bottom wall 115 is connected to the inner wall 111 to form a partition wall separating the first chamber from the second chamber 112. The pump 13 is accommodated in the accommodating cavity 120 and fixed on the cavity bottom wall 122. The spray head 14 is accommodated in the inner cavity 110 and disposed near the top wall 114, so that the coolant 15 sprayed from the spray head 14 can pass through the surface of the inner wall 111 from top to bottom, thereby increasing the heat exchange area and uniformly transmitting the cooling energy to the second chamber 112. In this embodiment, the refrigeration device 1 not only directly contacts the bottom wall 115 with the coolant 15, but also pumps the coolant 15 to the spray head 14 through the pump 13 to spray onto the inner wall 111, so that the heat exchange area of the refrigeration device 1 is increased, and the heat exchange efficiency of the cold drink machine 100 is improved.

The connecting wall 116 has a first wall 1161 extending horizontally and a second wall 1162 extending vertically. The first wall 1161 has one end connected to the outer wall 113 and the other end connected to the second wall 1162, and the second wall 1162 is parallel to the outer wall 113. The first wall 1161 extends horizontally for a length substantially equal to the thickness of the cavity wall 121 of the lower container 12. In the radial direction, the second wall 1162 is recessed inward compared to the outer wall 113, the inner diameter of the circle in which the second wall 1162 is located is substantially equal to the inner diameter of the receiving cavity 120, when the upper container 11 is mounted on the lower container 12, the first wall 1161 of the upper container 11 is supported upward by the end wall 123 of the lower container, the second wall 1162 is supported inward by the cavity wall 121, and the bottom wall 115 is received in the receiving cavity 120. So configured, in the radial direction, the cavity wall 121 of the lower container 12 abuts inwardly against the outer peripheral edge of the second wall 1162, so that the upper container 11 and the lower container 12 are relatively fixed in the radial direction.

In this embodiment, the upper container 11 further includes four partitions 1122 dividing the second chamber 112 into four independent chambers 1121, four delivery pipes 117 passing through the outer wall 113 and communicating with the four chambers 1121, and a control valve (not shown) provided in each delivery pipe 117 to control the opening and closing of the delivery pipe 117. Each of the partitions 1122 radially connects the inner wall 111 and the outer wall 113. The outlet tube 117 may guide the water or the beverage in the second chamber 112. In the present invention, the second chamber 112 is divided into four independent chambers 1121, so that different beverages can be stored in each independent chamber 1121, and the cold drink machine 100 can cool different beverages at the same time, and finally, the requirements of different consumers can be met at the same time.

In the invention, the refrigerating medium 15 can be conventional refrigerants, such as conventional freon refrigerant R134, hydrocarbon refrigerant R290, R600a, natural working medium CO2, natural working medium NH3 and the like; or food grade refrigerant, such as alcohol refrigerating medium such as glycol. In this embodiment, a food grade coolant is preferred, with the coolant 15 having a freezing point below-20 ℃. The water pump 13 is a low temperature resistant submersible pump. In the present embodiment, the head 14 is a cross head having 4 ejection holes 141. Of course, in other embodiments, the spray head 14 may be multiple, each spray head 14 is provided with multiple spray holes 141, and the multiple spray holes 141 are circumferentially arranged around each spray head 14 to achieve 360-degree spraying. Or, in other embodiments, the spray head 14 is a cylindrical body with openings on the periphery, and the coolant 15 can be sprayed to the periphery through the through holes on the periphery to form water columns, thereby increasing the spray area.

When the refrigeration cycle is in use, liquid such as water or fruit juice enters the second chamber 112 from the top of the upper container 11, the cold and hot circulation system 2 is started to realize refrigeration cycle, and at the moment, the refrigerant gas compressed into high temperature and high pressure in the compressor 21 is conveyed to the condenser 22 through a pipeline. In the condenser 22, the refrigerant gas is cooled and condensed by ambient air to form a high-pressure liquid, and then the high-pressure liquid is sent to the throttling device 23, the refrigerant liquid is partially gasified in the throttling device 23 to form a low-temperature and low-pressure gas-liquid two-phase mixture, and then the mixture enters the second heat exchanger 24, i.e., the evaporator 24, and the refrigerant in the second heat exchanger 24 absorbs heat from the secondary refrigerant 15 in the accommodating chamber 120 and is gasified, and finally returns to the compressor 21, at which time, the cooling-heating circulation system completes a refrigeration cycle.

In the process, when the second heat exchanger 24 absorbs heat to the coolant 15, that is, the coolant 15 is cooled relative to the coolant in the second heat exchanger 24, the pump 13 is turned on, the pump 13 pumps the cooled coolant 15 out to the spray head 14 and sprays the cooled coolant 15 to the surface of the inner wall 111 through the spray holes 141 toward the surface of the inner cavity 110, and the coolant 15 flows back to the large accommodating cavity 120 of the lower container 12 from the surface of the inner wall 111, thereby forming a spray cycle process. The coolant 15 transfers cold energy to the water or the juice in the second chamber 112 through the inner wall 111 and the bottom wall 115, thereby cooling the water or the juice. In the present invention, the inner wall 111 and the bottom wall 115 are made of smooth stainless steel sheets, in other embodiments, protruding ribs may be added on the surfaces of the inner wall 111 and the bottom wall 115, or the inner wall 111 and the bottom wall 115 are supported by corrugated stainless steel sheets, so as to increase the heat exchange area of the inner wall 111 and the bottom wall 115, and finally improve the heat exchange effect of the cooling drink machine 100.

In addition, the temperature sensor inside the refrigeration device 1 is provided with a first predetermined temperature between-15 ℃ and-10 ℃ and a second predetermined temperature between-10 ℃ and 0 ℃. When the temperature of the coolant 15 is lower than the first predetermined temperature, the cooling-heating circulation system 2 stops cooling, and when the temperature of the coolant 15 is higher than the second predetermined temperature, the cooling-heating circulation system 2 starts cooling, so that the cooling capacity of the cooling-heating circulation system 2 to the cooling device 1 is ensured through the detection and control of the temperature sensor.

According to the cold drink machine 100, the secondary refrigerant 15 is refrigerated through the cold and hot circulating system 2, the secondary refrigerant is sprayed to the inner wall 111 through the spray head 14, the bottom wall 115 is directly contacted with the secondary refrigerant 15, cold is transferred into the second chamber 112 through the partition wall, the contact area of cold transfer is increased, the transfer path in the cold transfer process is reduced through the direct cold transfer of the secondary refrigerant 15 and the partition wall, so that the water or fruit juice in the second chamber 112 of the cold drink machine 100 is rapidly cooled, and the refrigerating efficiency of the cold drink machine 100 is improved.

Of course, in other embodiments, the refrigeration device may also be a separate container, the container has a first chamber and a second chamber located below the first chamber, a partition wall is disposed between the first chamber and the second chamber, the secondary refrigerant is filled in the second chamber and directly contacts a bottom surface of the partition wall, and the second heat exchanger of the cooling-heating circulation system is immersed in the secondary refrigerant. Therefore, after the secondary refrigerant exchanges heat with the second heat exchanger to absorb cold energy, the cold energy can be directly transmitted to the partition wall, and then the cold energy is transmitted to the water or the beverage in the first chamber by the partition wall.

In yet another embodiment, the refrigeration device may be a single container, the container has a first chamber and a second chamber radially disposed in the first chamber, a partition wall extending vertically is disposed between the first chamber and the second chamber, the coolant fills the second chamber and directly contacts an inner surface of the partition wall, and the second heat exchanger of the cooling-heating cycle system is immersed in the coolant. Therefore, after the secondary refrigerant exchanges heat with the second heat exchanger to absorb cold energy, the cold energy can be directly transmitted to the partition wall, and then the cold energy is transmitted to the water or the beverage in the first chamber by the partition wall.

In still another embodiment, the refrigeration apparatus may be a single container having a first chamber, a second chamber radially disposed in the first chamber, a pump disposed in the second chamber, and a spray head in communication with the pump. A vertically extending partition wall is arranged between the first cavity and the second cavity, the secondary refrigerant is contained at the bottom of the second cavity, and the second heat exchanger of the cold and hot circulating system is soaked in the secondary refrigerant. The pump can pump the secondary refrigerant and spray the secondary refrigerant to the partition wall through the spray head, so that the secondary refrigerant is in full contact with the inner surface of the partition wall, the secondary refrigerant can directly transmit cold to the partition wall after exchanging heat with the second heat exchanger to absorb the cold, and the partition wall transmits the cold to water or beverage in the first chamber.

It should be noted that when an element is referred to as being "fixed …" to another element, it can be directly on the surface of the other element or be spaced apart from the surface of the other element.

Terms such as "upper," "lower," "left," "right," "front," "rear," and the like, used herein to denote relative spatial positions, are used for ease of description to describe one feature's relationship to another feature as illustrated in the figures. It will be understood that the spatially relative positional terms may be intended to encompass different orientations than those shown in the figures depending on the product presentation position and should not be construed as limiting the claims. In addition, the descriptor "horizontal" as used herein is not entirely equivalent to allowing an angular tilt along a direction perpendicular to the direction of gravity.

In addition, the above embodiments are only used for illustrating the invention and not for limiting the technical solutions described in the invention, and the understanding of the present specification should be based on the technical personnel in the field, and although the present specification has described the invention in detail by referring to the above embodiments, the ordinary skilled in the art should understand that the technical personnel in the field can still make modifications or equivalent substitutions to the present invention, and all the technical solutions and modifications thereof without departing from the spirit and scope of the present invention should be covered in the claims of the present invention.

Claims

1. A cold drink machine is characterized by comprising a refrigerating device and a cold and hot circulating system matched with the refrigerating device, wherein the cold and hot circulating system comprises a compressor, a first heat exchanger, a throttling device and a second heat exchanger which are sequentially arranged on the same loop, the refrigerating device is provided with a first cavity, a second cavity, a partition wall for separating the first cavity from the second cavity and secondary refrigerant contained in the first cavity, the first cavity is not communicated with the second cavity, the second heat exchanger is arranged in the first cavity and is soaked in the secondary refrigerant, and the secondary refrigerant and the second heat exchanger carry out heat exchange to absorb cold energy and then transmit the cold energy into the second cavity through the partition wall; the refrigerating device also comprises a pump arranged in the first cavity and a spray head connected with the pump, and the pump pumps the coolant to the spray head and sprays the coolant to the partition wall; the first cavity comprises an accommodating cavity and an inner cavity which is positioned above the accommodating cavity and communicated with the accommodating cavity, and the second cavity surrounds the periphery of the inner cavity; the pump is contained in the containing cavity, the spray head is arranged in the inner cavity, and the secondary refrigerant is contained in the containing cavity.

2. The cooler of claim 1, wherein: the coolant is in direct contact with the divider wall.

3. The cooler of claim 1, wherein: the refrigerating device is provided with an upper container and a lower container which is vertically matched with the upper container, the upper container is provided with an inner wall which radially separates and does not communicate the inner cavity with the second cavity, and the lower container is provided with the accommodating cavity with an upward opening.

4. A cooler as set forth in claim 3 wherein: the lower container is provided with a cavity wall surrounding the periphery of the accommodating cavity and a cavity bottom wall positioned at the bottom of the accommodating cavity.

5. A cooler as set forth in claim 3 wherein: the refrigerating device is also provided with a top wall for sealing the top of the first chamber, the top of the inner cavity is sealed by the top wall, the upper container is also provided with a bottom wall for sealing the bottom of the second chamber, and the bottom wall is connected with the inner wall and jointly forms the partition wall for separating the first chamber from the second chamber.

6. A cooler as set forth in claim 3 wherein: the refrigerating device is also provided with an outer wall surrounding the periphery of the second chamber and at least two clapboards dividing the second chamber into at least two independent chambers, and each clapboard is connected with the outer wall and the inner wall.

7. A cooler as set forth in claim 3 wherein: the refrigerating device is also provided with an outer wall surrounding the periphery of the second cavity and a delivery pipe penetrating through the outer wall and communicated with the second cavity, and a control valve for controlling the on-off of the delivery pipe is arranged in the delivery pipe.

8. The cooler of claim 1, wherein: the spray head is provided with a plurality of spray holes which are arranged in a radial surrounding manner.

9. The cooler of claim 1, wherein: the refrigerating device further comprises a temperature sensor arranged in the first chamber and used for detecting the temperature of the secondary refrigerant, the temperature sensor is provided with a first preset temperature and a second preset temperature, when the temperature of the secondary refrigerant is lower than the first preset temperature, the cold and hot circulating system stops working, and when the temperature of the secondary refrigerant is higher than the second preset temperature, the cold and hot circulating system starts working.

10. The cooler of claim 1, wherein: the secondary refrigerant is food-grade secondary refrigerant with low freezing point or conventional secondary refrigerant.