Cooling treatment system for hot steam in steamer

Abstract

The invention discloses a cooling treatment system for hot steam in a steamer. The cooling treatment system comprises a fan, an air inlet pipe, the steamer, an air outlet pipe, a heat exchange air conditioner, an air inlet fan pipe, a fresh air inlet, a primary cooling side outdoor fresh air inlet pipe, a primary cooling side outdoor exhaust pipe, an outdoor exhaust outlet, a secondary cooling side cold source, a cold source alcohol inlet pipe, a cold source alcohol return pipe, a plate heat exchanger, a water return pipe and a water inlet pipe. High-temperature hot steam in the pot is pumped into a heat exchange air conditioner for exchange cooling, the interior of the steamer is continuously cooled through the heat exchange air conditioner, the temperature of gas in the pot is reduced to 50 DEG C, and then the gas is conveyed back to the steamer. Therefore, generation of waste mist is inhibited from the source, heat generated in the heating process of the steamer can be avoided, the phenomenon that a large amount of gas is generated after a cover is opened is reduced, the environmental protection problem caused by discharging of high-temperature hot steam and the health problem generated after staff inhales are solved, energy consumption is saved, and cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of steamer technology, and in particular to a steamer internal hot steam cooling system. Background Technology

[0002] In the production fields of brewing and food processing, processes such as cooking, steaming, and sterilization usually require the use of large steaming equipment to process materials under high temperature and high pressure conditions. During this process, when each batch of materials is processed, or when depressurization or discharge operations are required, a large amount of high-temperature, high-humidity, and complex waste mist is generated inside the steaming pot.

[0003] Currently, the most common method for handling hot steam from steamers is to directly open the steamer's exhaust valve, allowing the high-temperature waste vapor to be released into the production workshop through the exhaust pipe or directly from the lid gaps. This vapor is then allowed to diffuse, cool, and settle naturally in the workshop air before being exhausted outdoors via the overall ventilation system. However, the instantaneous release of high-temperature waste vapor drastically increases the local temperature and humidity, affecting worker operations, creating safety hazards, and potentially causing equipment short circuits, corrosion, reduced equipment precision and lifespan, and increased maintenance costs. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a steam cooling system for steam pots.

[0005] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or to describe the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simple form as a prelude to the detailed description that follows.

[0006] The present invention adopts the following technical solution:

[0007] This invention provides a steam cooling system for a steamer, comprising: a steamer, an air outlet duct, a return duct, a heat exchange air conditioner, an outdoor fresh air inlet duct on the primary cooling side, and an air conditioning cold source water supply device.

[0008] The hot air outlet of the steamer is connected to the air outlet pipe, the air outlet pipe is connected to the inlet of the heat exchange air conditioner's heat medium pipeline, and the air inlet at the bottom of the steamer is connected to the outlet of the heat exchange air conditioner's heat medium pipeline through the return pipeline; the outdoor fresh air inlet pipe on the primary cooling side is connected to the inlet of the heat exchange air conditioner's refrigerant pipeline, and the cold source water cooling unit is connected to the cold source control pipeline of the heat exchange air conditioner through the inlet and return water pipes.

[0009] Furthermore, the return pipeline includes: an air inlet pipe, a fan, and an air inlet duct; the air inlet pipe is connected to the outlet of the heat medium pipeline of the heat exchange air conditioner, the air inlet at the bottom of the steamer is connected to the air inlet duct, and the air inlet pipe is connected to the air inlet duct through the fan.

[0010] Furthermore, the air inlet of the fan is connected to the air inlet pipe, and the air outlet of the fan is connected to the air inlet pipe.

[0011] Furthermore, the steam cooling system in the steamer further includes: an outdoor exhaust pipe on the primary cooling side, which is connected to the refrigerant pipe outlet of the heat exchange air conditioner.

[0012] Furthermore, the air conditioning cold source water cooling device includes: a plate heat exchanger, a secondary cooling side cold source, a cold source alcohol inlet pipe, and a cold source alcohol return pipe; the cold source alcohol inlet pipe is connected to the refrigerant inlet of the plate heat exchanger, the cold source alcohol return pipe is connected to the refrigerant outlet of the plate heat exchanger, the water inlet pipe is connected to the heat medium inlet of the plate heat exchanger, and the water return pipe is connected to the heat medium outlet of the plate heat exchanger.

[0013] Furthermore, the cold source control pipe exchanges heat with the refrigerant pipe of the heat exchange air conditioner; the inlet water pipe is connected to the outlet side of the cold source control pipe, and the return water pipe is connected to the inlet side of the cold source control pipe.

[0014] Furthermore, the air outlet pipe, the air inlet pipe, and the air inlet pipe are all DN150 pipes.

[0015] Furthermore, the source alcohol inlet pipe and the cold source alcohol return pipe are DN50 pipes. The secondary cooling side cold source is connected to the cold source alcohol inlet pipe and the cold source alcohol return pipe, and the flow rate of the 50% alcohol solution in the cold source alcohol inlet pipe and the cold source alcohol return pipe is 50m³. 3 / h.

[0016] The beneficial effects of this invention are as follows: High-temperature hot steam in the pot is drawn into a heat exchange air conditioner for cooling. The heat exchange air conditioner continuously cools the inside of the steamer, reducing the gas temperature to 50°C before returning it to the steamer. By constructing a multi-level, closed-loop temperature control system, the internal heat of the steamer is precisely managed during operation, thereby suppressing the generation of waste steam at the source. This solves the problem of heat generated during the steamer heating process, reduces the phenomenon of large amounts of gas being generated after the lid is opened, and thus solves the environmental problems caused by the exhaust of high-temperature hot steam and the health problems caused by employees inhaling it. Moreover, it saves energy and reduces costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a steam cooling system for a steamer according to the present invention.

[0019] Figure 2 This is a schematic diagram of the heat exchange principle of the heat exchange air conditioner of this invention. Detailed Implementation

[0020] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] like Figure 1-2 As shown in some illustrative embodiments, a steam cooling system for a steamer is provided, comprising: a steamer 3, an air outlet duct 4, a return duct, a heat exchange air conditioner 5, an outdoor fresh air inlet duct 8 on the primary cooling side, an outdoor exhaust duct 9 on the primary cooling side, a return water pipe 15, an inlet water pipe 16, and an air conditioning cold source water supply device.

[0022] The return pipeline includes: air inlet pipe 6, fan 1, and air inlet pipe 2.

[0023] The air conditioning cold source water supply unit includes: a plate heat exchanger 14, a secondary cooling side cold source 11, a cold source alcohol inlet pipe 12, and a cold source alcohol return pipe 13.

[0024] The hot air outlet 31 of the steamer 3 is connected to the air outlet 4, which in turn is connected to the inlet of the heat medium pipeline of the heat exchange air conditioner 5. The bottom air inlet 32 ​​of the steamer 3 is connected to the outlet of the heat medium pipeline of the heat exchange air conditioner 5 via a return pipeline. Specifically, the air inlet pipe 6 is connected to the outlet of the heat medium pipeline of the heat exchange air conditioner 5, the bottom air inlet 32 ​​of the steamer 3 is connected to the air inlet pipe 2, and the air inlet pipe 6 is connected to the air inlet pipe 2 via the fan 1. That is, the air inlet of the fan 1 is connected to the air inlet pipe 6, and the air outlet of the fan 1 is connected to the air inlet pipe 2.

[0025] One end of the outdoor fresh air inlet duct 8 on the primary cooling side is connected to the fresh air inlet 7, and the other end is connected to the refrigerant pipe inlet of the heat exchange air conditioner 5; one end of the outdoor exhaust duct 9 on the primary cooling side is connected to the outdoor exhaust outlet 10, and the other end is connected to the refrigerant pipe outlet of the heat exchange air conditioner 5.

[0026] The internal circulation system consists of fan 1, air inlet duct 2, steamer 3, air outlet duct 4, heat exchange air conditioner 5, and air inlet fan duct 6. The working process is as follows:

[0027] Hot steam extraction: During the steaming process, the high-temperature and high-humidity gas (hot steam) generated inside the steamer 3 is extracted through the hot air outlet 31 at the top.

[0028] Pipeline transport: Hot steam is guided to heat exchange air conditioner 5 through air outlet pipe 4.

[0029] Heat exchange cooling: Inside the heat exchange air conditioner 5, high-temperature hot steam flows through its heat medium pipe 51 and exchanges heat with the low-temperature medium in the refrigerant pipe 52, and the gas temperature is reduced to 50°C.

[0030] Cooling and return: The cooled gas is discharged from the outlet of the heat medium pipe of the heat exchange air conditioner 5 and enters the air inlet pipe 6.

[0031] Power cycle: Fan 1 serves as the power source, drawing the cooled gas out from the air inlet pipe 6, pressurizing it, and then passing it through the air inlet pipe 2, finally pressing it back into the steamer from the bottom air inlet 32 ​​at the bottom of the steamer 3.

[0032] This application optimizes end-of-pipe treatment to source control, meaning that instead of treating waste gas after it is generated, heat is continuously extracted and cooled from the pot during the cooking process, so that the temperature inside the pot is always precisely controlled at the set value (e.g., 50°C). When the lid is opened to discharge the material, the temperature difference between the inside and outside is minimal, and flash evaporation is almost non-existent. This fundamentally solves the problem of unorganized emissions of waste mist. Moreover, because the generation of waste mist is suppressed, the harsh working conditions of high temperature, high humidity, and diffuse mist no longer occur in the workshop.

[0033] The fresh air inlet 7, the outdoor fresh air inlet duct 8 on the primary cooling side, the outdoor exhaust duct 9 on the primary cooling side, and the outdoor exhaust outlet 10 together constitute the outdoor air intake primary cooling system. Primary cooling is achieved by introducing outdoor air; outdoor air is drawn in through the fresh air inlet 7 and enters the refrigerant pipe 52 of the heat exchange air conditioner 5 via the outdoor fresh air inlet duct 8 on the primary cooling side. Inside the heat exchange air conditioner 5, the fresh air undergoes cross-current counter-current heat exchange with the high-temperature hot steam flowing through the heat medium pipe 51, causing the fresh air to absorb heat and its temperature to rise. The hot air, having absorbed residual heat, passes through the outdoor exhaust duct 9 on the primary cooling side and is finally discharged to the outdoor atmosphere through the outdoor exhaust outlet 10. This application transfers heat to the primary cooling system through a closed-loop cycle. Although this requires refrigeration energy, it avoids direct heat loss. More importantly, through precise temperature control, the cooking process can be optimized, heating time can be shortened, or heating power can be reduced, thereby achieving an overall reduction in energy consumption. Moreover, it can protect equipment, extend its lifespan, and provide a stable temperature and humidity environment in the workshop. This effectively avoids problems such as equipment corrosion and electrical short circuits caused by high humidity, reduces equipment maintenance costs, and extends the service life of the equipment.

[0034] The chilled water cooling unit is connected to the chilled water control pipe 53 of the heat exchange air conditioner 5 via the inlet pipe 16 and the return pipe 15. Specifically, the chilled alcohol inlet pipe 12 is connected to the refrigerant inlet of the plate heat exchanger 14, the chilled alcohol return pipe 13 is connected to the refrigerant outlet of the plate heat exchanger 14, the inlet pipe 16 is connected to the heat medium inlet of the plate heat exchanger 14, and the return pipe 15 is connected to the heat medium outlet of the plate heat exchanger 14.

[0035] The inlet pipe 16 is connected to the outlet side of the cold source control pipe 53, and the return pipe 15 is connected to the inlet side of the cold source control pipe 53. The secondary cooling side cold source 11 provides a low-temperature 50% alcohol solution at -10℃, which enters the plate heat exchanger 14 through the cold source alcohol inlet pipe 12. In the plate heat exchanger 14, the low-temperature alcohol solution exchanges heat with the water from the cold source control pipe 53 of the heat exchange air conditioner 5. After its temperature rises to -5℃, it returns to the secondary cooling side cold source 11 through the cold source alcohol return pipe 13, completing the refrigeration cycle. After the water is cooled in the plate heat exchanger 14, it forms low-temperature chilled water, which is sent to the cold source control pipe 53 of the heat exchange air conditioner 5 through the inlet pipe 16. In the heat exchange air conditioner 5, the chilled water exchanges heat with the outdoor fresh air flowing through the refrigerant pipe 52, further cooling the fresh air, and then returns to the plate heat exchanger 14 through the return pipe 15 to be cooled again, forming a water circulation. The cooling capacity of the secondary cooling side cold source 11 is precisely transferred to the outdoor fresh air, thereby flexibly controlling the temperature of the cooling medium entering the heat exchange air conditioner 5, and ultimately achieving precise control over the cooling capacity of the hot steam inside the boiler.

[0036] The secondary cooling side cold source 11, cold source alcohol inlet pipe 12, cold source alcohol return pipe 13, and the cold source alcohol return pipe 13 together constitute the cold source supply. The -10°C cold source medium enters the plate heat exchanger 14, and the -5°C cold source medium is transported back, thereby exchanging the cooling capacity. The plate heat exchanger 14, return water pipe 15, inlet water pipe 16, and heat exchange air conditioner 5 form an air conditioning cold source water group for air conditioning cooling, realizing the regulation of the cold source. The heat exchange air conditioner 5 continuously cools the inside of the steamer, reducing the gas temperature inside the steamer to 50°C, greatly reducing the phenomenon of waste mist and waste steam generated after the lid is opened.

[0037] The exhaust pipe 4, the inlet fan pipe 6, and the inlet pipe 2 are all DN150 pipes.

[0038] The cold source alcohol inlet and return pipes are DN50 pipes. The secondary cooling side cold source 11 is connected to the cold source alcohol inlet pipe 12 and the cold source alcohol return pipe 13, and the flow rate of the 50% alcohol solution in the cold source alcohol inlet pipe 12 and the cold source alcohol return pipe 13 is 50m³ / h. 3 / h.

[0039] Control logic:

[0040] Start-up logic: When the PLC receives the start-up signal from the main control system (such as the start of the steaming process), the system starts automatically. Fan 1, heat exchange air conditioner 5 and related water pumps start in a preset sequence, and the system begins to circulate cooling water inside the pot.

[0041] Shutdown / Adjustment Logic: The PLC continuously compares the real-time temperature inside the boiler with the set target value, such as 50℃. When the temperature reaches or falls below 50℃, the PLC issues a command to stop the heat exchange air conditioner 5, but fan 1 may continue to run for a period of time to promote temperature uniformity. When the temperature rises back above the set value, the system automatically restarts. This PID closed-loop control ensures a constant temperature inside the boiler and avoids excessive energy consumption.

[0042] The enthalpy of saturated water vapor inside the boiler at 100℃ is 2675 kJ / kg, and its density is 0.6 kg / m³. 3 Calculate the cooling capacity required to cool saturated water vapor at 100℃ to 25℃ / 90% of its original temperature. The enthalpy of air at 25℃ / 90% is 70kJ / kg. The initial air exchange in the grain steamer requires 3.5×0.6×(2675-70) / 3600=1.52KW of cooling capacity, and the initial air exchange in the distillation pot requires 2×0.6×(2675-70) / 3600=0.87KW of cooling capacity. Assuming a constant air inlet temperature of 100℃ for subsequent cooling capacity calculations, the cooling capacity for the grain steamer is 6000×1.2×1×(100-25) / 3600=150kW, and the cooling capacity for the distillation pot is 4000×1.2×1×(100-25) / 3600=100kW.

[0043] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A steam cooling system for a steam cooker, characterized in that, include: Steamer, air outlet duct, return pipeline, heat exchange air conditioner, outdoor fresh air inlet duct on the primary cooling side, and air conditioning chilled water supply unit; The hot air outlet of the steamer is connected to the air outlet pipe, the air outlet pipe is connected to the inlet of the heat exchange air conditioner's heat medium pipeline, and the air inlet at the bottom of the steamer is connected to the outlet of the heat exchange air conditioner's heat medium pipeline through the return pipeline; the outdoor fresh air inlet pipe on the primary cooling side is connected to the inlet of the heat exchange air conditioner's refrigerant pipeline, and the cold source water cooling unit is connected to the cold source control pipeline of the heat exchange air conditioner through the inlet and return water pipes.

2. The steam cooling system for a steamer according to claim 1, characterized in that, The return pipeline includes: an air inlet pipe, a fan, and an air inlet duct; the air inlet pipe is connected to the outlet of the heat medium pipeline of the heat exchange air conditioner, the air inlet at the bottom of the steamer is connected to the air inlet duct, and the air inlet pipe is connected to the air inlet duct through the fan.

3. The steam cooling system for a steamer according to claim 2, characterized in that, The air inlet of the fan is connected to the air inlet pipe, and the air outlet of the fan is connected to the air inlet pipe.

4. The steam cooling system for a steamer according to claim 3, characterized in that, Also includes: An outdoor exhaust duct on the primary cooling side is connected to the refrigerant pipe outlet of the heat exchange air conditioner.

5. The steam cooling system for a steamer according to claim 4, characterized in that, The air conditioning cold source water cooling device includes: a plate heat exchanger, a secondary cooling side cold source, a cold source alcohol inlet pipe, and a cold source alcohol return pipe; the cold source alcohol inlet pipe is connected to the refrigerant inlet of the plate heat exchanger, the cold source alcohol return pipe is connected to the refrigerant outlet of the plate heat exchanger, the water inlet pipe is connected to the heat medium inlet of the plate heat exchanger, and the water return pipe is connected to the heat medium outlet of the plate heat exchanger.

6. The steam cooling system for a steamer according to claim 5, characterized in that, The cold source control pipe exchanges heat with the refrigerant pipe of the heat exchange air conditioner; the inlet water pipe is connected to the outlet side of the cold source control pipe, and the return water pipe is connected to the inlet side of the cold source control pipe.

7. The steam cooling system for a steamer according to claim 6, characterized in that, The air outlet pipe, the air inlet pipe, and the air inlet pipe are all DN150 pipes.

8. The steam cooling system for a steamer according to claim 7, characterized in that, The cold source alcohol inlet pipe and the cold source alcohol return pipe are DN50 pipes. The secondary cooling side cold source is connected to the cold source alcohol inlet pipe and the cold source alcohol return pipe, and the flow rate of the 50% alcohol solution in the cold source alcohol inlet pipe and the cold source alcohol return pipe is 50m³. 3 / h.

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