A heat recovery type refrigerating device based on food processing

Abstract

The utility model relates to food processing technical field especially, more particularly to a kind of heat recovery type refrigeration device based on food processing, including condensing cylinder, the one side of condensing cylinder is fixed with hot water outlet and cold water inlet respectively along up and down and is penetrated, the inside embedding fixed of condensing cylinder has spiral pipe, the both ends interface of spiral pipe are all penetrated the barrel wall of condensing cylinder and outwardly extending arrangement is set;One end interface of the spiral pipe is provided with compressor, the end of the compressor and the flange butt joint of the interface position of spiral pipe, the other end of the compressor is connected with transition pipe one.The high-temperature hot water of the utility model enters from the cold water inlet of condensing cylinder lower part, and low-temperature water after heat exchange is discharged from the hot water outlet of upper part, and the heat exchange time is extended by reverse flow design, and simultaneously, spiral pipe is embedded in the inside of condensing cylinder in the form of coiling, the contact area and heat exchange path with hot water are greatly increased, so that high-temperature refrigerant gas can more fully transfer heat to water flow.

Description

Technical Field

[0001] This utility model relates to the field of food processing technology, and in particular to a heat recovery refrigeration device based on food processing. Background Technology

[0002] Food processing is the core link in the transformation of agricultural products and primary ingredients into high-value-added commodities, encompassing a variety of processes such as heating-cooking, baking, sterilization, cooling-quick freezing, cold storage pretreatment, drying-spray drying, hot air drying, and pre-packaging treatment-sterilization followed by cooling.

[0003] In traditional food processing, the high-temperature waste heat generated by the heating unit, typically hot water at 60-100℃, steam condensate, or directly emitted high-temperature exhaust gas, is often discharged directly into the environment without utilization. Meanwhile, the cooling unit requires a large amount of electricity or steam to cool the process fluid from a high temperature to a target low temperature. According to the authorized publication number "CN222579023U", a waste heat recovery refrigeration appliance is disclosed, including an ORC system for recovering heat generated by the condenser of the refrigeration appliance. The ORC system includes an ORC evaporator, an expander, an ORC condenser, and a working fluid pump connected in sequence. The ORC evaporator is configured to form a heat exchange relationship with the condenser, absorbing the heat generated by the condenser. The expander is configured to convert the heat absorbed by the ORC evaporator into mechanical energy. The refrigeration appliance has a housing with a receiving cavity on the lower back side. The receiving cavity houses the condenser, as well as the ORC evaporator, expander, and working fluid pump of the ORC system. The ORC evaporator and the condenser are connected for heat exchange via heat exchange fins. Therefore, this invention utilizes the ORC evaporator of the ORC system to absorb the heat generated by the condenser of the equipment, and then converts the heat into mechanical energy through an expander. This achieves the recovery and reuse of low-grade waste heat from refrigeration appliances.

[0004] Currently, if a heat recovery structure is not added during food processing, the waste heat generated by the heating unit is directly discharged into the environment, while the cooling unit needs to consume additional electricity to drive the refrigeration unit to generate cooling capacity, resulting in a significant increase in overall energy consumption. Furthermore, because the cooling unit needs to bear the load of unrecovered waste heat, the refrigeration unit, water pump, cooling tower and other equipment are in a high-load state for a long time, which not only increases the risk of failure but also shortens the service life of the equipment. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a heat recovery refrigeration device based on food processing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a heat recovery refrigeration device based on food processing, comprising a condenser cylinder, wherein a hot water outlet and a cold water inlet are fixedly and continuously through one side of the condenser cylinder, and a spiral tube is embedded and fixed inside the condenser cylinder, wherein both ends of the spiral tube extend outward through the cylinder wall of the condenser cylinder.

[0007] A compressor is installed at one end of the spiral tube. The end of the compressor is connected to the flange at the connection position of the spiral tube. The other end of the compressor is connected to a transition pipe. The other end of the transition pipe is connected to a bent tube for evaporation. The surface of the bent tube is wrapped with a frame, and several fins arranged side by side are wrapped and fixed on the surface of the bent tube.

[0008] Preferably, a liquid storage tank is provided at the other end of the spiral tube, and an inlet port is embedded and fixed at the upper side of one side of the liquid storage tank. The inlet port and the spiral tube are connected by flanges.

[0009] Preferably, a liquid outlet is fixedly connected to the lower end of the other side of the liquid storage tank, and a filter is connected to the end flange of the liquid outlet.

[0010] Preferably, the filter has a flange connected to a transition pipe two at the end away from the liquid outlet, and the other end of the transition pipe two is fixedly connected to the end of the bend away from the compressor.

[0011] Preferably, an expansion valve is provided on the surface of the second transition tube, and the valve core of the expansion valve is embedded inside the second transition tube.

[0012] Preferably, sleeves are fixedly installed on both sides of the frame, and connecting rods are slidably inserted into the inside of the sleeves. The ends of the two connecting rods distributed along both sides are jointly installed with the same support frame.

[0013] Preferably, a motor is fixedly installed inside the support frame by a bracket, and the motor has a rotating shaft for driving inside, with several blades fixedly distributed on the surface of the rotating shaft.

[0014] Preferably, the connecting rod has a pin groove on its surface, and a retaining pin is slidably fitted inside the pin groove, with the end of the retaining pin having a curved surface structure.

[0015] Preferably, a spring is provided inside the pin groove, and the two ends of the spring are fixedly installed to the end face of the locking pin and the inner wall of the pin groove, respectively.

[0016] Preferably, the sleeve has an arc-shaped groove inside, and an inner arc surface is provided on the inner wall of the arc-shaped groove. The end curved surface of the locking pin slides and abuts against the inner arc surface of the arc-shaped groove.

[0017] The design scheme proposed in this utility model has the following beneficial effects in application:

[0018] 1. The high-temperature hot water of this utility model enters from the cold water inlet at the bottom of the condenser, while the low-temperature water after heat exchange is discharged from the hot water outlet at the top. The reverse flow design prolongs the heat exchange time. At the same time, the spiral tube is embedded in the condenser in a coiled form, which greatly increases the contact area with the hot water and the heat exchange path, so that the high-temperature refrigerant gas can more fully transfer heat to the water flow.

[0019] 2. In the evaporation process, the surface of the bent tube is wrapped with fins to increase the heat dissipation area. At the same time, the two sides of the frame are connected to the support frame through sleeves and connecting rods. The built-in motor drives the blades to generate airflow. The locking pin and spring mechanism enable the support frame to be quickly installed or removed. The principle of curved surface sliding and pressing is used to ensure that it is firmly fixed. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structural distribution of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall side distribution of this utility model;

[0022] Figure 3 This is a schematic diagram of the spiral tube distribution of this utility model;

[0023] Figure 4 This is a schematic diagram of the bend distribution of the present invention;

[0024] Figure 5 This is a front view of the disassembled sleeve and connecting rod of this utility model;

[0025] Figure 6 This is a side view of the disassembled sleeve and connecting rod of this utility model.

[0026] In the diagram: 1. Condenser; 11. Hot water outlet; 12. Cold water inlet; 13. Spiral tube; 14. Compressor; 15. Transition tube one; 16. Frame; 17. Bend; 18. Fin; 2. Liquid receiver; 21. Liquid inlet; 22. Liquid outlet; 23. Filter; 24. Transition tube two; 25. Expansion valve; 3. Sleeve; 31. Connecting rod; 32. Support frame; 33. Motor; 34. Blade; 301. Pin groove; 302. Locking pin; 303. Spring; 304. Arc groove. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Example 1

[0029] Reference Figures 1-6 A heat recovery refrigeration device based on food processing includes a condenser cylinder 1. A hot water outlet 11 and a cold water inlet 12 are fixedly connected through one side of the condenser cylinder 1, respectively. A spiral tube 13 is embedded and fixed inside the condenser cylinder 1. Both ends of the spiral tube 13 extend outward through the cylinder wall of the condenser cylinder 1. The condenser cylinder 1, the hot water outlet 11, and the cold water inlet 12 allow high-temperature hot water to enter the condenser cylinder 1 from the lower cold water inlet 12, while the relatively low-temperature water after heat exchange is discharged from the upper hot water outlet 11. The spiral tube 13 is spirally coiled, which greatly increases the contact area and heat exchange path length between the tube body and the hot water in the condenser cylinder 1, thereby improving the heat conduction efficiency. Both ends of the spiral tube 13 extend outward through the cylinder wall of the condenser cylinder 1, which facilitates connection with other components in the external refrigeration cycle system.

[0030] A compressor 14 is installed at one end of the spiral tube 13. The end of the compressor 14 is flanged to the spiral tube 13. The other end of the compressor 14 is connected to a transition tube 15. The other end of the transition tube 15 is flanged to a bend 17 for evaporation. The surface of the bend 17 is covered with a frame 16. Several fins 18 arranged side by side are fixed on the surface of the bend 17. The high-temperature and high-pressure refrigerant gas compressed by the compressor 14 is then transported to the next stage through the transition tube 15. The transition tube 15 is flanged to the outlet of the compressor 14 and the subsequent bend 17 to ensure the connection strength and airtightness of the entire pipeline system. The high-temperature and high-pressure refrigerant gas flows in the bend 17 and gradually releases the heat it carries through contact with the fins 18 and the surrounding low-temperature environment. Its temperature drops and a phase change occurs, gradually changing from a gaseous state to a liquid state.

[0031] The other end of the spiral tube 13 is equipped with a liquid storage tank 2. A liquid inlet 21 is embedded and fixed on the upper side of the liquid storage tank 2. The liquid inlet 21 and the spiral tube 13 are connected by flanges. After the refrigerant has been cooled by the bend 17 and undergone phase change, it will flow back through the system pipeline and enter the liquid storage tank 2. The liquid storage tank 2 is located at the other end of the spiral tube 13. A liquid inlet 21 is embedded and fixed on the upper side of its side. The liquid inlet 21 is connected to the outlet end of the spiral tube 13 by flanges. The main function of the liquid storage tank 2 is to temporarily store and initially separate the refrigerant returning from the refrigeration cycle, so as to ensure that the refrigerant entering the cycle later exists in a relatively stable liquid form and avoid the adverse effects of uneven gas-liquid mixing on the system operation.

[0032] Among them, the lower end of the other side of the liquid storage tank 2 is fixed with a liquid outlet 22, and the end flange of the liquid outlet 22 is connected to a filter 23. The filter 23 is a crucial component in the refrigeration system. Its function is to further filter and purify the refrigerant to remove any impurities, particles, moisture or other contaminants that may be present.

[0033] Among them, the end of the filter 23 away from the liquid outlet 22 is flanged and connected to the transition pipe 24. The other end of the transition pipe 24 is fixedly connected to the end of the bend 17 away from the compressor 14. The transition pipe 24, the filter 23 and the bend 17 are also flanged to ensure a firm connection and smooth media transport.

[0034] Among them, the surface of the second transition tube 24 is provided with an expansion valve 25. The valve core of the expansion valve 25 is embedded inside the second transition tube 24. The main function of the expansion valve 25 is to throttle and reduce the pressure of the high-pressure liquid refrigerant, so that its pressure and temperature are reduced rapidly, thereby entering a state that is easy to evaporate and absorb heat.

[0035] Among them, sleeves 3 are fixedly installed on both sides of the frame 16, and connecting rods 31 are slidably inserted into the inside of the sleeves 3. The ends of the two connecting rods 31 distributed along both sides are jointly installed with the same support frame 32. Through the insertion of the connecting rods 31 and the sleeves 3, the support frame 32 and the frame 16 can be quickly positioned.

[0036] The motor 33 is fixedly installed inside the support frame 32 by a bracket. The motor 33 has a rotating shaft for driving, and several blades 34 are fixedly distributed on the surface of the rotating shaft. After the motor 33 is powered on, the rotating shaft can be driven, and the blades 34 can generate an airflow, thereby improving the airflow at the bend 17 position during the evaporation process.

[0037] The connecting rod 31 has a pin groove 301 on its surface. A locking pin 302 is slidably sleeved inside the pin groove 301. The end of the locking pin 302 has a curved structure. The locking pin 302 can be extended and retracted based on the inside of the pin groove 301.

[0038] The pin groove 301 is equipped with a spring 303. The two ends of the spring 303 are fixedly installed with the end face of the locking pin 302 and the inner wall of the pin groove 301, respectively. The spring 303 can ensure the stable extension and repositioning of the locking pin 302.

[0039] The sleeve 3 has an arc-shaped groove 304 inside, and an inner arc surface on the inner wall of the arc-shaped groove 304. The end curved surface of the locking pin 302 slides and abuts against the inner arc surface of the arc-shaped groove 304. When connecting the connecting rod 31 and the sleeve 3, the connecting rod 31 and the sleeve 3 are inserted first. At this time, the end curved surface of the locking pin 302 is squeezed by the port position of the sleeve 3, and the locking pin 302 compresses the spring 303 into the pin groove 301. Then, after the sleeve 3 and the connecting rod 31 are fully connected, the position of the locking pin 302 corresponds to the position of the arc-shaped groove 304, so that the locking pin 302 can spring into the interior of the arc-shaped groove 304. When separation is required, the two can be quickly separated by sliding the end curved surface of the locking pin 302 along the arc-shaped track of the inner arc surface of the arc-shaped groove 304 and the effect of hard pulling.

[0040] In practical implementation: This scheme compresses the low-temperature, low-pressure refrigerant gas into a high-temperature, high-pressure state through compressor 14, and then transports it to bend 17 through transition pipe 15. In bend 17, the refrigerant exchanges heat with the surrounding environment through fins 18, releases heat, and gradually condenses into a liquid state. The liquid refrigerant then flows into the liquid storage tank 2, enters through the liquid inlet 21, realizes temporary storage and gas-liquid separation, and the separated liquid refrigerant flows out from the liquid outlet 22. It passes through filter 23 to remove impurities and moisture, ensuring the purity of the refrigerant. Then, the refrigerant flows to expansion valve 25 through transition pipe 24. Under the throttling effect of expansion valve 25, the pressure and temperature drop sharply, becoming a low-temperature, low-pressure liquid mixture, preparing for subsequent evaporation and heat absorption. This process relies on the coiled structure of spiral tube 13 in condenser cylinder 1, which increases the heat exchange path and improves the overall efficiency.

[0041] In the evaporation and airflow enhancement stage, the low-temperature, low-pressure liquid refrigerant flows out from the expansion valve 25 and enters the bend 17 for evaporation and heat absorption. The frame 16 and fins 18 surrounding the bend 17 increase the contact area with the air, promoting heat absorption. At the same time, the support frame 32 is connected to the sleeve 3 via the connecting rod 31. The motor 33 installed inside drives the rotating shaft to rotate the blades 34, generating forced airflow and accelerating the airflow around the bend 17, thereby improving the evaporation efficiency. The sliding insertion design of the connecting rod 31 and the sleeve 3 achieves quick fixation through the pin groove 301, the locking pin 302, and the spring 303: when the connecting rod 31 is inserted into the sleeve 3, the locking pin 302 is compressed into the pin groove 301, and after aligning with the arc groove 304, it springs in and locks; when separating, the locking pin 302 slides along the inner arc surface of the arc groove 304, and can be disassembled by pulling.

[0042] In the overall heat recovery and energy utilization process, the condenser 1 introduces low-temperature water through the cold water inlet 12, which exchanges heat with the high-temperature refrigerant in the internal spiral tube 13 in a counter-current manner. The high-temperature refrigerant enters the spiral tube 13 from the compressor 14 through the transition tube 15, releases heat to the water flow, and is discharged from the hot water outlet 11 after cooling itself, thus realizing heat energy recovery. The spiral design of the spiral tube 13 extends the contact path and improves the heat transfer efficiency. At the same time, the liquid storage tank 2 receives the condensed refrigerant through the liquid inlet 21. After gas-liquid separation, the liquid refrigerant flows to the expansion valve 25 through the liquid outlet 22, filter 23 and transition tube 24. After throttling, it enters the bend tube 17 for evaporation, completing the cycle. The frame 16 and fins 18 assist in heat dissipation on the bend tube 17, while the blades 34 driven by the motor 33 enhance the airflow and further optimize the heat exchange.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A heat recovery refrigeration device based on food processing, comprising a condenser (1), characterized in that: A hot water outlet (11) and a cold water inlet (12) are fixedly connected through the top and bottom of one side of the condenser (1). A spiral tube (13) is embedded and fixed inside the condenser (1). Both ends of the spiral tube (13) extend outward through the wall of the condenser (1). A compressor (14) is provided at one end of the spiral tube (13). The end of the compressor (14) is connected to the flange at the connection position of the spiral tube (13). The other end of the compressor (14) is connected to a transition pipe (15). The flange at the other end of the transition pipe (15) is connected to a bent pipe (17) for evaporation. The surface of the bent pipe (17) is covered with a frame (16). Several fins (18) arranged side by side are fixedly wrapped on the surface of the bent pipe (17).

2. The heat recovery refrigeration device based on food processing according to claim 1, characterized in that: A liquid storage tank (2) is provided at the other end of the spiral tube (13). An inlet port (21) is embedded and fixed on the upper side of the liquid storage tank (2). The inlet port (21) and the spiral tube (13) are connected by flanges.

3. The heat recovery refrigeration device based on food processing according to claim 2, characterized in that: The lower end of the other side of the liquid storage tank (2) is fixed with a liquid outlet (22), and the end flange of the liquid outlet (22) is connected to a filter (23).

4. The heat recovery refrigeration device based on food processing according to claim 3, characterized in that: The filter (23) has a flange connected to a transition pipe (24) at one end away from the liquid outlet (22), and the other end of the transition pipe (24) is fixedly connected to the end of the bend (17) away from the compressor (14).

5. A heat recovery refrigeration device based on food processing according to claim 4, characterized in that: An expansion valve (25) is provided on the surface of the second transition tube (24), and the valve core of the expansion valve (25) is embedded inside the second transition tube (24).

6. A heat recovery refrigeration device based on food processing according to claim 5, characterized in that: Sleeves (3) are fixedly installed on both sides of the frame (16). A connecting rod (31) is slidably inserted inside the sleeve (3). The ends of the two connecting rods (31) distributed along both sides are jointly installed with the same support frame (32).

7. A heat recovery refrigeration device based on food processing according to claim 6, characterized in that: The motor (33) is fixedly installed inside the support frame (32) by a bracket. The motor (33) has a rotating shaft for driving inside, and several blades (34) are fixedly distributed on the surface of the rotating shaft.

8. A heat recovery refrigeration device based on food processing according to claim 7, characterized in that: The connecting rod (31) has a pin groove (301) on its surface, and a locking pin (302) is slidably sleeved inside the pin groove (301). The end of the locking pin (302) has a curved surface structure.

9. A heat recovery refrigeration device based on food processing according to claim 8, characterized in that: A spring (303) is provided inside the pin groove (301), and the two ends of the spring (303) are fixedly installed to the end face of the locking pin (302) and the inner wall of the pin groove (301), respectively.

10. A heat recovery refrigeration device based on food processing according to claim 9, characterized in that: The sleeve (3) has an arc groove (304) inside, and an inner arc surface is provided on the inner wall of the arc groove (304). The end curved surface of the locking pin (302) slides and abuts against the inner arc surface of the arc groove (304).

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