Oil temperature control system

Abstract

The invention relates to the technical field of pine nut stir-frying equipment, in particular to an oil temperature control system. An oil temperature control system comprises a wok, and a constant-temperature hot oil inlet pipe is communicated with the peripheral side of the bottom of the wok. One end of the constant-temperature hot oil inlet pipe communicates with the frying pan, and the other end of the constant-temperature hot oil inlet pipe communicates with a constant-temperature hot oil storage tank; the other peripheral side of the bottom of the frying pan is communicated with a circulating hot oil outlet pipe A; one end of the circulating hot oil outlet pipe A is communicated with the frying pan, and the other end of the circulating hot oil outlet pipe A is communicated with a circulating hot oil filter; one end of the circulating hot oil filter is communicated with the frying pan, and the other end of the circulating hot oil filter is communicated with a circulating hot oil thermal compensation device; and one end of the circulating hot oil thermal compensation device is communicated with the circulating hot oil filter, and the other end is communicated with the constant-temperature hot oil storage tank. The oil temperature control system can control the oil temperature to be 150 DEG C + / -0.5 DEG C, the high-temperature frying efficiency of the pine nuts can be effectively guaranteed, and the fried pine nuts can be endowed with better taste.

Description

Technical Field

[0001] The present application relates to the technical field of pine nut frying equipment, and in particular to an oil temperature control system. Background Art

[0002] Pine nuts have good therapeutic effects and good nutritional value. Pine nuts are processed into nut foods and are sought after and loved by the general public. The existing processing technology of fried pine nuts includes six major processes, namely pine nut selection, pine nut grinding, high-temperature frying, drying, selection, and packaging.

[0003] The high-temperature frying process has the greatest impact on the taste of pine nut food. The time and oil temperature of high-temperature frying will affect the taste of the finished pine nuts. At present, the existing high-temperature frying process is as follows: pour edible oil into a frying pan and heat it to 148-150°C, put the pine nuts that have been ground into the frying pan for frying, fry for 280-350 seconds, and then put the fried pine nuts into a filter to filter and remove excess oil.

[0004] With respect to the high-temperature frying process in the above-mentioned prior art, the inventors found that the oil temperature in the above-mentioned high-temperature frying process fluctuates greatly, and the actual hot oil temperature in the frying pan is lower than 150° C., which affects the taste of the finished pine nuts. Summary of the invention

[0005] In order to solve the problem of large fluctuations in oil temperature in the high-temperature frying process in the above-mentioned technology, which affects the taste of the finished pine nuts, the present application provides an oil temperature control system.

[0006] The oil temperature control system provided in this application is realized by the following technical solutions: An oil temperature control system comprises a wok, wherein a constant temperature hot oil inlet pipe is connected to one side of the bottom of the wok; one end of the constant temperature hot oil inlet pipe is connected to the wok and the other end is connected to a constant temperature hot oil storage tank; a circulating hot oil outlet pipe A is connected to the other side of the bottom of the wok; one end of the circulating hot oil outlet pipe A is connected to the wok and the other end is connected to a circulating hot oil filter; one end of the circulating hot oil filter is connected to the wok and the other end is connected to a circulating hot oil thermal compensation device; one end of the circulating hot oil thermal compensation device is connected to the circulating hot oil filter and the other end is connected to the constant temperature hot oil storage tank.

[0007] The oil temperature control system in the present application can control the oil temperature at 150℃±0.5℃ after thermal compensation through the circulating hot oil thermal compensation device. The thermal compensation needs to take into account the heat loss generated by the pipeline transmission during the front-end input into the constant temperature hot oil storage tank and the heat loss generated by the pipeline transmission during the back-end input from the constant temperature hot oil storage tank into the wok. It can effectively ensure the high-temperature frying efficiency of pine nuts and give the fried pine nuts a better taste.

[0008] Preferably, the constant temperature hot oil inlet pipe is fixedly connected to a first solenoid valve, and the constant temperature hot oil inlet pipe is fixedly connected to a first oil temperature detector, the first oil temperature detector includes a PT00 perl thermal resistor temperature sensor and a digital display box connected to the PT00 perl thermal resistor temperature sensor, the PT00 perl thermal resistor temperature sensor is sealed and penetrates the constant temperature hot oil inlet pipe and extends to the inside of the constant temperature hot oil inlet pipe; the digital display box of the first oil temperature detector is fixedly connected to the outside of the constant temperature hot oil inlet pipe; the first oil temperature detector is used to detect the oil temperature input into the wok.

[0009] By adopting the above technical scheme, the temperature of the hot oil input into the wok can be effectively monitored. By observing the oil temperature input into the wok detected by the first oil temperature detector, the thermal compensation intensity of the circulating hot oil thermal compensation device can be adjusted in time, thereby reducing the fluctuation of the oil temperature input into the wok and maintaining the oil temperature input into the wok at 150℃±0.5℃.

[0010] Preferably, the circulating hot oil outlet pipe A is fixedly connected to a second solenoid valve, and the circulating hot oil outlet pipe A is fixedly connected to a second oil temperature detector, the second oil temperature detector has the same structure as the first oil temperature detector, and the second oil temperature detector is used to detect the oil temperature output from the wok.

[0011] By adopting the above technical scheme, the hot oil temperature of the output wok can be effectively monitored. By observing the oil temperature of the output wok detected by the second oil temperature detector, the compensation heat difference can be calculated, and the thermal compensation intensity of the circulating hot oil thermal compensation device can be adjusted in time, thereby reducing the oil temperature fluctuation of the input wok.

[0012] Preferably, the circulating hot oil filter comprises a food-grade stainless steel shell, in which a plurality of filter meshes are detachably and fixedly connected; the flow direction of the hot oil in the circulating hot oil filter is perpendicular to the surface of the filter mesh; the filter mesh divides the interior of the food-grade stainless steel shell into a filter area and an oil filter area; a liquid pump is connected to the bottom of the circulating hot oil filter; the liquid pump is connected to the oil filter area; the input end of the liquid pump is connected to the bottom of the circulating hot oil filter and the output end of the liquid pump is connected to the circulating hot oil outlet pipe B.

[0013] Setting a filter mesh in the circulating hot oil filter can effectively filter out impurities generated by frying, avoid clogging the circulating hot oil thermal compensation device, and ensure the durability and stability of the thermal compensation of the circulating hot oil thermal compensation device.

[0014] Preferably, the circulating hot oil outlet pipe B is fixedly connected to a third solenoid valve, and the circulating hot oil outlet pipe B is fixedly connected to a third oil temperature detector. The third oil temperature detector has the same structure as the first oil temperature detector and is used to detect the oil temperature of the output circulating hot oil filter.

[0015] By adopting the above technical scheme, the hot oil temperature of the output circulating hot oil filter can be effectively monitored. By observing the oil temperature of the output circulating hot oil filter detected by the third oil temperature detector, the compensation heat difference can be calculated, and the thermal compensation intensity of the circulating hot oil thermal compensation device can be adjusted in time, thereby reducing the oil temperature fluctuation of the input wok.

[0016] Preferably, the circulating hot oil thermal compensation device includes a bracket and a plurality of circulating hot oil thermal compensation units fixedly connected to the bracket, and adjacent circulating hot oil thermal compensation units are connected end to end through a U-shaped tube A; a plurality of circulating hot oil thermal compensation units are connected end to end through a U-shaped tube A to form a circulating hot oil thermal compensator; one end of the circulating hot oil thermal compensator is connected to a circulating hot oil outlet pipe B, and the other end of the circulating hot oil thermal compensator is connected to a constant temperature hot oil storage tank.

[0017] Preferably, a single circulating hot oil thermal compensation unit includes a food-grade stainless steel oil pipeline A and a heat exchange tube shell A fixedly connected to the outer wall of the food-grade stainless steel oil pipeline A, and a heating medium circulates inside the heat exchange tube shell A; one end of the food-grade stainless steel oil pipeline is fixedly connected to a fourth solenoid valve, and the food-grade stainless steel oil pipeline A is fixedly connected to a fourth oil temperature detector, and the fourth oil temperature detector is located on one side of the fourth solenoid valve; the fourth oil temperature detector has the same structure as the first oil temperature detector, and the fourth oil temperature detector is used to detect the oil temperature input into the circulating hot oil thermal compensation unit; the other end of the food-grade stainless steel oil pipeline A is fixedly connected to a fifth solenoid valve, and the food-grade stainless steel oil pipeline A is fixedly connected to a fifth oil temperature detector, and the fifth oil temperature detector is located on one side of the fifth solenoid valve; the fifth oil temperature detector is used to detect the temperature of the hot oil that has been thermally compensated by a single hot oil thermal compensation unit.

[0018] By adopting the above technical solution, the oil temperature of the output circulating hot oil filter can be effectively thermally compensated, the oil temperature fluctuation of the input wok can be reduced, the input wok oil temperature can be maintained constant, and the taste of the pine nuts can be guaranteed.

[0019] Preferably, the circulating hot oil thermal compensation device also includes a number of new oil thermal compensation units fixedly connected to the bracket, and adjacent new oil thermal compensation units are connected end to end through a U-shaped tube B; a number of new oil thermal compensation units are connected end to end through a U-shaped tube B to form a new oil thermal compensator; one end of the new oil thermal compensator is connected to the new oil storage tank, and the other end of the new oil thermal compensator is connected to the constant temperature hot oil storage tank.

[0020] Preferably, the new oil thermal compensation unit includes a food-grade stainless steel oil pipeline B and a heat exchange tube shell B fixedly connected to the food-grade stainless steel oil pipeline B, and a heat exchange medium circulates inside the heat exchange tube shell B; one end of the food-grade stainless steel oil pipeline B is fixedly connected to a sixth solenoid valve, and the food-grade stainless steel oil pipeline B is fixedly connected to a sixth oil temperature detector, and the sixth oil temperature detector is located on one side of the sixth solenoid valve; the sixth oil temperature detector has the same structure as the first oil temperature detector, and the sixth oil temperature detector is used to detect the oil temperature input into the new oil thermal compensation unit; the other end of the food-grade stainless steel oil pipeline B is fixedly connected to a seventh solenoid valve, and the food-grade stainless steel oil pipeline B is fixedly connected to a seventh oil temperature detector, and the seventh oil temperature detector is located on one side of the seventh solenoid valve; the seventh oil temperature detector has the same structure as the first oil temperature detector, and the seventh oil temperature detector is used to detect the oil temperature input into the new oil thermal compensation unit.

[0021] By adopting the above technical solution, the quality of the hot oil can be guaranteed, thereby ensuring the quality and safety of the finished pine nuts.

[0022] Preferably, the circulating hot oil thermal compensation device also includes a Y-shaped connector, one Y-port of the Y-shaped connector is connected to the output end of the circulating hot oil thermal compensator, the other Y-port of the Y-shaped connector is connected to the output end of the new oil thermal compensator, and the branch end of the Y-shaped connector is connected to an oil mixer; the oil mixer is connected to the constant temperature hot oil storage tank; the upper part of the constant temperature hot oil storage tank is fixedly connected to a modulation oil inlet pipe; the modulation oil inlet pipe is connected to the branch end of the Y-shaped connector; the modulation oil inlet pipe is fixedly connected to an eighth solenoid valve, and the modulation oil inlet pipe is fixedly connected to an eighth oil temperature detector, and the eighth oil temperature detector is located on one side of the eighth solenoid valve; the eighth oil temperature detector has the same structure as the first oil temperature detector, and the eighth oil temperature detector is used to detect the oil temperature input into the constant temperature hot oil storage tank.

[0023] Preferably, the bottom of the constant temperature hot oil storage tank is fixedly connected with a modulating oil outlet pipe; the modulating oil outlet pipe is fixedly connected with a ninth solenoid valve, and the modulating oil outlet pipe is fixedly connected with a ninth oil temperature detector, and the ninth oil temperature detector is located on one side of the ninth solenoid valve; the ninth oil temperature detector has the same structure as the first oil temperature detector, and the ninth oil temperature detector is used to detect the oil temperature output from the constant temperature hot oil storage tank; a thermal compensation unit is connected between the modulating oil outlet pipe and the constant temperature hot oil inlet pipe; the structure of the thermal compensation unit is the same as the circulating hot oil thermal compensation unit in the circulating hot oil thermal compensation device.

[0024] By adopting the above technical solution, the heat compensation unit can ensure that the oil temperature of the constant temperature hot oil inlet pipe is constant, thereby ensuring that the fried pine nuts have a better taste.

[0025] In summary, this application has the following advantages: 1. The oil temperature control system of the present invention can control the oil temperature at 150°C ± 0.5°C, which can effectively ensure the high-temperature frying efficiency of pine nuts and give the fried pine nuts a better taste.

[0026] 2. The present invention can detect the acid value and peroxide value of hot oil in real time, and adjust the oil quality by adding new oil through the circulating hot oil heat compensation device, so as to effectively ensure the safety and quality of pine nut food. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the oil temperature control system in the present invention.

[0028] Figure 2 It is a structural schematic diagram of a frying pan in the oil temperature control system of the present invention.

[0029] Figure 3 It is a structural schematic diagram of a circulating hot oil filter in the oil temperature control system of the present invention.

[0030] Figure 4 This is a schematic diagram of the structure of the circulating hot oil heat compensation device in the oil temperature control system of the present invention. Figure 5 It is a structural schematic diagram of a constant temperature hot oil storage tank in the oil temperature control system of the present invention.

[0031] Figure 6 It is a comparison diagram of the 0-300s oil temperature curve of the oil temperature control system in the present invention and the 0-300s oil temperature curve in the control group in the prior art.

[0032] In the figure, 1, frying pan; 11, constant temperature hot oil inlet pipe; 111, first solenoid valve; 112, first oil temperature detector; 12, circulating hot oil outlet pipe A; 121, second solenoid valve; 122, second oil temperature detector; 2, constant temperature hot oil storage tank; 20, centrifugal pump; 21, modulation oil inlet pipe; 211, eighth solenoid valve; 212, eighth oil temperature detector; 22, modulation oil outlet pipe; 221, ninth solenoid valve; 222, ninth oil temperature detector; 3, circulating hot oil filter; 31, food grade stainless steel shell; 32, filter mesh; 33, liquid pump; 34, circulating hot oil outlet pipe B; 341, third solenoid valve; 342, third oil temperature detector; 4, circulating hot oil thermal compensation Device; 40, circulating hot oil thermal compensator; 400, new oil thermal compensator; 41, bracket; 42, circulating hot oil thermal compensation unit; 421, food grade stainless steel oil pipeline A; 422, heat exchange tube shell A; 423, fourth solenoid valve; 424, fourth oil temperature detector; 425, fifth solenoid valve; 426, fifth oil temperature detector; 43, U-tube A; 44, new oil thermal compensation unit; 441, food grade stainless steel oil pipeline B; 442, heat exchange tube shell B; 45, U-tube B; 46, sixth solenoid valve; 47, sixth oil temperature detector; 48, seventh solenoid valve; 49, seventh oil temperature detector; 5, Y-type connector; 6, oil mixer; 7, thermal compensation unit. DETAILED DESCRIPTION

[0033] In order to further understand the present invention, preferred embodiments of the present invention are described below in conjunction with examples and comparative examples. Example

[0034] refer to Figure 1 and Figure 2 An oil temperature control system includes a wok 1, a circulating hot oil filter 3, a circulating hot oil thermal compensation device 4, a constant temperature hot oil storage tank 2, and a thermal compensation unit 7. A constant temperature hot oil inlet pipe 11 is fixedly connected to one side of the bottom of the wok 1. The constant temperature hot oil inlet pipe 11 is connected to the output end of the thermal compensation unit 7, and the input end of the thermal compensation unit 7 is connected to the output end of the constant temperature hot oil storage tank 2. A circulating hot oil outlet pipe A12 is fixedly connected to the other side of the bottom of the wok 1. One end of the circulating hot oil outlet pipe A12 is fixedly connected to the wok 1 and the other end of the circulating hot oil outlet pipe A12 is connected to the circulating hot oil filter 3, that is, the circulating hot oil outlet pipe A12 is connected to the input end of the circulating hot oil filter 3. The input end of the circulating hot oil filter 3 is fixedly connected to the wok 1 and the output end of the circulating hot oil filter 3 is fixedly connected to the circulating hot oil thermal compensation device 4. The input end of the circulating hot oil thermal compensation device 4 is fixedly connected to the output end of the circulating hot oil filter 3 , and the output end of the circulating hot oil thermal compensation device 4 is fixedly connected to the constant temperature hot oil storage tank 2 .

[0035] refer to Figure 1 and Figure 2The constant temperature hot oil inlet pipe 11 is fixedly connected to a first solenoid valve 111 through a flange, and the constant temperature hot oil inlet pipe 11 is fixedly connected to a first oil temperature detector 112 for detecting the oil temperature T1 input into the wok 1. The first oil temperature detector 112 includes a PT100 Perl thermal resistor temperature sensor and a digital display box connected to the PT100 Perl thermal resistor temperature sensor. The PT100 Perl thermal resistor temperature sensor is sealed and penetrates the constant temperature hot oil inlet pipe 11 and extends to the inside of the constant temperature hot oil inlet pipe 11, and is used to detect the oil temperature T1 input into the wok 1. The digital display box of the first oil temperature detector 112 is fixedly connected to the outside of the constant temperature hot oil inlet pipe 11 to read the oil temperature T1 in real time.

[0036] refer to Figure 1 and Figure 2 The circulating hot oil outlet pipe A12 is fixedly connected to a second solenoid valve 121 through a flange, and the circulating hot oil outlet pipe A12 is fixedly connected to a second oil temperature detector 122 for detecting the oil temperature T2 output to the wok 1. The second oil temperature detector 122 has the same structure as the first oil temperature detector 112. The PT100 peroxide resistance temperature sensor of the second oil temperature detector 122 is sealed and penetrates the circulating hot oil outlet pipe A12 and extends to the inside of the circulating hot oil outlet pipe A12, and is used to detect the oil temperature T2 output to the wok 1. The digital display box of the second oil temperature detector 122 is fixedly connected to the outside of the circulating hot oil outlet pipe A12, and reads the oil temperature T2 in real time.

[0037] refer to Figure 1 and Figure 3 The circulating hot oil filter 3 includes a food-grade stainless steel shell 31, a sealed chamber is formed in the food-grade stainless steel shell 31, and a plurality of filter meshes 32 are detachably and fixedly connected in the sealed chamber of the food-grade stainless steel shell 31. Specifically, the filter meshes 32 and the food-grade stainless steel shell 31 are detachably and fixedly connected by snap-on connection. The flow direction of the hot oil in the circulating hot oil filter 3 is perpendicular to the surface of the filter mesh 32, so as to effectively filter and remove impurities in the hot oil. Preferably, the number of the filter meshes 32 is four, and the mesh numbers of the four filter meshes 32 are 20 meshes, 50 meshes, 80 meshes, and 120 meshes. In order to obtain the peroxide value and acid value information of the hot oil, the food-grade stainless steel shell 31 is provided.

[0038] refer to Figure 1 and Figure 3 The filter mesh 32 divides the interior of the food-grade stainless steel housing 31 into a filter area 311 and an oil filter area 312, that is, the filter area 311 is located upstream of the 120-mesh filter mesh 32, and the oil filter area 312 is located downstream thereof. The bottom of the circulating hot oil filter 3 is fixedly connected to a liquid pump 33 connected to the oil filter area 312 through a 304 stainless steel pipeline, the input end of the liquid pump 33 is fixedly connected to the 304 stainless steel pipeline through a flange, and the output end of the liquid pump 33 is fixedly connected to a circulating hot oil outlet pipe B34 through a flange.

[0039] refer to Figure 1 and Figure 3 The circulating hot oil outlet pipe B34 is fixedly connected to a third solenoid valve 341 through a flange, and the circulating hot oil outlet pipe B34 is fixedly connected to a third oil temperature detector 342 for detecting the oil temperature T3 of the output circulating hot oil filter 3. The third oil temperature detector 342 has the same structure as the first oil temperature detector 112. The PT100 peroxide resistance temperature sensor of the third oil temperature detector 342 is sealed and penetrates the circulating hot oil outlet pipe B34 and extends to the inside of the circulating hot oil outlet pipe B34, and is used to detect the oil temperature T3 of the output circulating hot oil filter 3. The digital display box of the third oil temperature detector 342 is fixed to the outside of the circulating hot oil outlet pipe B34 to read the oil temperature T3 in real time.

[0040] refer to Figure 1 and Figure 4 The circulating hot oil thermal compensation device 4 includes a bracket 41, a plurality of circulating hot oil thermal compensation units 42 fixedly connected to the bracket 41, and a plurality of new oil thermal compensation units 44 fixedly connected to the bracket 41. The adjacent circulating hot oil thermal compensation units 42 are connected end to end through a U-shaped tube A43, that is, a plurality of circulating hot oil thermal compensation units 42 are connected end to end through the U-shaped tube A43 to form a circulating hot oil thermal compensator 40. One end of the circulating hot oil thermal compensator 40 is fixedly connected to the output end of the circulating hot oil outlet pipe B34, and the other end of the circulating hot oil thermal compensator 40 is fixedly connected to the input end of the constant temperature hot oil storage tank 2.

[0041] refer to Figure 1 and Figure 4 , the adjacent new oil thermal compensation units 44 are fixedly connected end to end through the U-shaped tube B45, that is, a plurality of new oil thermal compensation units 44 are fixedly connected end to end through the U-shaped tube B45 to form a new oil thermal compensator 400. One end of the new oil thermal compensator 400 is fixedly connected to the new oil storage tank, that is, the input end of the new oil thermal compensator 400 inputs new oil into the new oil thermal compensator 400, and the other end of the new oil thermal compensator 400 is fixedly connected to the input end of the constant temperature hot oil storage tank 2. In order to reduce the volatility of the oil formed by the mixture of circulating oil and new oil, the circulating hot oil thermal compensator 40, the new oil thermal compensator 400, and the constant temperature hot oil storage tank 2 are connected by using a Y-shaped connector 5. The specific connection structure is as follows: one Y-port of the Y-type connector 5 is fixedly connected to the output end of the circulating hot oil thermal compensator 40, the other Y-port of the Y-type connector 5 is fixedly connected to the output end of the new oil thermal compensator 400, the branch end of the Y-type connector 5 is fixedly connected to the oil mixer 6 through a flange, and the output end of the oil mixer 6 is connected to the input end of the constant temperature hot oil storage tank 2 through a food grade stainless steel pipe.

[0042] refer to Figure 1 and Figure 4The single circulating hot oil heat compensation unit 42 includes a food-grade stainless steel oil pipeline A421 and a heat exchange shell A422 fixedly connected to the outer wall of the food-grade stainless steel oil pipeline A421. A heat exchange cavity is formed between the inner wall of the heat exchange shell A422 and the food-grade stainless steel oil pipeline A421. A heating medium is circulated in the heat exchange cavity of the heat exchange shell A422. The heating medium can be silicone oil or low-pressure steam. The temperature T of the heating medium is regulated. 换 and flow rate V, to perform controllable thermal compensation on the hot oil input into the circulating hot oil thermal compensation unit 42.

[0043] refer to Figure 1 and Figure 4 , one end of the food-grade stainless steel oil pipeline 42, i.e., the input end, is fixedly connected to a fourth solenoid valve 423 through a flange, and the food-grade stainless steel oil pipeline A421 is fixedly connected to a fourth oil temperature detector 424 for detecting the oil temperature T4 of the input circulating hot oil thermal compensation unit 42, and the fourth oil temperature detector 424 is located on one side of the fourth solenoid valve 423, i.e., downstream of the fourth oil temperature detector 424. The fourth oil temperature detector 424 has the same structure as the first oil temperature detector 112, and the PT100 perth thermal resistance temperature sensor of the fourth oil temperature detector 424 is sealed and penetrates the food-grade stainless steel oil pipeline A421 and extends to the inside of the food-grade stainless steel oil pipeline A421, and is used to detect the oil temperature T4 at the input end of the food-grade stainless steel oil pipeline A421. The digital display box of the fourth oil temperature detector 424 is fixed to the outside of the input end of the food-grade stainless steel oil pipeline A421, and reads the oil temperature T4 in real time.

[0044] refer to Figure 1 and Figure 4 , the other end of the food-grade stainless steel oil pipeline A421, i.e., the output end, is fixedly connected with a fifth solenoid valve 425, and the food-grade stainless steel oil pipeline A421 is fixedly connected with a fifth oil temperature detector 426, and the fifth oil temperature detector 426 is located on one side of the fifth solenoid valve 425, i.e., the fifth oil temperature detector 426 is located upstream of the fifth solenoid valve 425. The fifth oil temperature detector 426 is used to detect the temperature T5 of the hot oil flowing out from the output end of the food-grade stainless steel oil pipeline A421 after thermal compensation by the single hot oil thermal compensation unit 42. The fifth oil temperature detector 426 has the same structure as the first oil temperature detector 112, and the PT100 peroxide resistance temperature sensor of the fifth oil temperature detector 426 is sealed and penetrates the food-grade stainless steel oil pipeline A421 to extend into the interior of the food-grade stainless steel oil pipeline A421, and is used to detect the oil temperature T5 at the output end of the food-grade stainless steel oil pipeline A421. The digital display box of the fifth oil temperature detector 426 is fixed to the outside of the output end of the food-grade stainless steel oil pipeline A421 to read the oil temperature T5 in real time.

[0045] refer to Figure 1 and Figure 4The new oil heat compensation unit 44 includes a food-grade stainless steel oil pipeline B441 and a heat exchange shell B442 fixedly connected to the food-grade stainless steel oil pipeline B441. A heat exchange cavity is formed between the inner wall of the heat exchange shell B442 and the food-grade stainless steel oil pipeline B441. A heating medium is circulated in the heat exchange cavity of the heat exchange shell B442. The heating medium can be silicone oil or low-pressure steam. The temperature T' of the heating medium is regulated. 换 and flow rate V', to perform controllable thermal compensation on the new oil input into the new oil thermal compensation unit 44.

[0046] refer to Figure 1 and Figure 4 , one end of the food-grade stainless steel oil pipeline B441, i.e., the input end, is fixedly connected to the sixth solenoid valve 46 through a flange, and the input end of the food-grade stainless steel oil pipeline B441 is fixedly connected to the sixth oil temperature detector 47, which is located on one side of the sixth solenoid valve 46, i.e., the sixth oil temperature detector 47 is located downstream of the sixth solenoid valve 46. The sixth oil temperature detector 47 has the same structure as the first oil temperature detector 112, and is used to detect the new oil temperature T6 input to the new oil heat compensation unit 44. The PT100 perth thermal resistor temperature sensor of the sixth oil temperature detector 47 is sealed and penetrates the food-grade stainless steel oil pipeline B441 and extends to the inside of the food-grade stainless steel oil pipeline B441, and is used to detect the oil temperature T6 at the input end of the food-grade stainless steel oil pipeline B441. The digital display box of the sixth oil temperature detector 47 is fixed to the outside of the input end of the food-grade stainless steel oil pipeline B441 to read the oil temperature T6 in real time.

[0047] refer to Figure 1 and Figure 4 The other end of the food-grade stainless steel oil pipeline B441, i.e. the output end, is fixedly connected to the seventh solenoid valve 48, and the food-grade stainless steel oil pipeline B441 is fixedly connected to the seventh oil temperature detector 49. The seventh oil temperature detector 49 is located on one side of the seventh solenoid valve 48, i.e. the seventh oil temperature detector 49 is located upstream of the seventh solenoid valve 48.

[0048] refer to Figure 1 and Figure 4 The seventh oil temperature detector 49 has the same structure as the first oil temperature detector 112. The seventh oil temperature detector 49 is used to detect the oil temperature T7 input into the new oil heat compensation unit 44. The PT100 Perl thermal resistor temperature sensor of the seventh oil temperature detector 49 is sealed and penetrates the food-grade stainless steel oil pipeline B441 and extends to the inside of the food-grade stainless steel oil pipeline B441, and is used to detect the oil temperature T7 at the output end of the food-grade stainless steel oil pipeline B441. The digital display box of the seventh oil temperature detector 49 is fixed to the outside of the output end of the food-grade stainless steel oil pipeline B441 to read the oil temperature T7 in real time.

[0049] refer to Figure 1 and Figure 5, the upper peripheral side of the constant temperature hot oil storage tank 2 is fixedly connected with a modulating oil inlet pipe 21, and the modulating oil inlet pipe 21 is connected to the output end of the oil mixer 6. The modulating oil inlet pipe 21 is fixedly connected with an eighth solenoid valve 211 through a flange, and the modulating oil inlet pipe 21 is fixedly connected with an eighth oil temperature detector 212, and the eighth oil temperature detector 212 is located downstream of the eighth solenoid valve 211. The eighth oil temperature detector 212 has the same structure as the first oil temperature detector 112, and the eighth oil temperature detector 212 is used to detect the oil temperature T8 input into the constant temperature hot oil storage tank 2. The PT100 perl thermal resistor temperature sensor of the eighth oil temperature detector 212 is sealed and penetrates the modulating oil inlet pipe 21 to extend into the modulating oil inlet pipe 21, and is used to detect the oil temperature T8 in the modulating oil inlet pipe 21. The digital display box of the eighth oil temperature detector 212 is fixed to the outside of the modulating oil inlet pipe 21 to read the oil temperature T8 in real time.

[0050] refer to Figure 1 and Figure 5 The bottom of the constant temperature hot oil storage tank 2 is fixedly connected to a food grade 304 stainless steel pipe through a flange, and a solenoid valve is installed on the food grade 304 stainless steel pipe. The output end of the food grade 304 stainless steel pipe is fixedly connected to a centrifugal pump 20 for extracting oil through a flange, and the input end of the centrifugal pump 20 is fixedly connected to the above-mentioned food grade 304 stainless steel pipe, and the output end of the centrifugal pump 20 is fixedly connected to a modulated oil outlet pipe 22 through a flange. The modulated oil outlet pipe 22 is fixedly connected to a ninth solenoid valve 221, and the modulated oil outlet pipe 22 is fixedly connected to a ninth oil temperature detector 222, and the ninth oil temperature detector 222 is located upstream of the ninth solenoid valve 221.

[0051] refer to Figure 1 and Figure 5 The ninth oil temperature detector 222 has the same structure as the first oil temperature detector 112. The ninth oil temperature detector 222 is used to detect the oil temperature T9 of the output constant temperature hot oil storage tank 2. The PT100 perl thermal resistor temperature sensor of the ninth oil temperature detector 222 is sealed and penetrates the modulating oil outlet pipe 22 and extends to the inside of the modulating oil outlet pipe 22, and is used to detect the temperature T9 of the oil output from the modulating oil outlet pipe 22. The digital display box of the ninth oil temperature detector 222 is fixed to the outside of the modulating oil outlet pipe 22 to read the oil temperature T9 in real time.

[0052] refer to Figure 1 and Figure 5 The heat compensation unit 7 is fixedly connected between the modulation oil outlet pipe 22 and the constant temperature hot oil inlet pipe 11 through a pipeline. The structure of the heat compensation unit 7 is the same as the circulating hot oil heat compensation unit 42 in the circulating hot oil heat compensation device 4, and is used to perform heat compensation on the oil output from the modulation oil outlet pipe 22, ensuring that the temperature of the oil input into the constant temperature hot oil inlet pipe 11 is maintained at 150±0.5℃, thereby effectively ensuring the high temperature frying efficiency of the pine nuts and giving the fried pine nuts a better taste.

[0053] In the frying method of the prior art, the temperature change curve of the hot oil in the frying pan is shown in Figure 6 , the temperature change curve of hot oil in the wok in this application is shown in Figure 6 ,contrast Figure 6 It can be seen that the constant temperature hot oil output by the oil temperature control system has a relatively small temperature change in the wok, which can give the fried pine nuts a better taste. From the subsequent packaging process, the pine nuts opening rate is also higher when the constant temperature hot oil generated by the oil temperature control system of the present invention is used, which is beneficial to improving product quality.

[0054] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. An oil temperature control system, comprising a frying pan (1), characterized in that: A constant temperature hot oil inlet pipe (11) is connected to one side of the bottom of the wok (1); one end of the constant temperature hot oil inlet pipe (11) is connected to the wok (1) and the other end is connected to the constant temperature hot oil storage tank (2); a circulating hot oil outlet pipe A (12) is connected to the other side of the bottom of the wok (1); one end of the circulating hot oil outlet pipe A (12) is connected to the wok (1) and the other end is connected to a circulating hot oil filter (3); one end of the circulating hot oil filter (3) is connected to the wok (1) and the other end is connected to a circulating hot oil thermal compensation device (4); one end of the circulating hot oil thermal compensation device (4) is connected to the circulating hot oil filter (3) and the other end is connected to the constant temperature hot oil storage tank (2).

2. An oil temperature control system according to claim 1, characterized in that: The constant temperature hot oil inlet pipe (11) is fixedly connected to a first solenoid valve (111), and the constant temperature hot oil inlet pipe (11) is fixedly connected to a first oil temperature detector (112), the first oil temperature detector (112) comprising a PT100 Perl thermal resistor temperature sensor and a digital display box connected to the PT100 Perl thermal resistor temperature sensor, the PT100 Perl thermal resistor temperature sensor being sealed and passing through the constant temperature hot oil inlet pipe (11) and extending into the interior of the constant temperature hot oil inlet pipe (11); the digital display box of the first oil temperature detector (112) is fixedly connected to the exterior of the constant temperature hot oil inlet pipe (11); the first oil temperature detector (112) is used to detect the temperature of oil input into the frying pan (1).

3. An oil temperature control system according to claim 2, characterized in that: The circulating hot oil outlet pipe A (12) is fixedly connected to a second solenoid valve (121), and the circulating hot oil outlet pipe A (12) is fixedly connected to a second oil temperature detector (122). The second oil temperature detector (122) has the same structure as the first oil temperature detector (112). The second oil temperature detector (122) is used to detect the temperature of the oil output from the frying pan (1).

4. An oil temperature control system according to claim 3, characterized in that: The circulating hot oil filter (3) comprises a food-grade stainless steel housing (31), wherein a plurality of filter meshes (32) are detachably and fixedly connected inside the food-grade stainless steel housing (31); the flow direction of hot oil in the circulating hot oil filter (3) is perpendicular to the surface of the filter meshes (32); the filter meshes (32) divide the interior of the food-grade stainless steel housing (31) into a filter area (311) and an oil filter area (312); the bottom of the circulating hot oil filter (3) is connected to a liquid pump (33); the liquid pump (33) is connected to the oil filter area (312); the input end of the liquid pump (33) is connected to the bottom of the circulating hot oil filter (3) and the output end of the liquid pump (33) is connected to a circulating hot oil outlet pipe B (34).

5. An oil temperature control system according to claim 4, characterized in that: The circulating hot oil outlet pipe B (34) is fixedly connected to a third solenoid valve (341), and the circulating hot oil outlet pipe B (34) is fixedly connected to a third oil temperature detector (342). The third oil temperature detector (342) has the same structure as the first oil temperature detector (112) and is used to detect the oil temperature output from the circulating hot oil filter (3).

6. An oil temperature control system according to claim 5, characterized in that: The circulating hot oil thermal compensation device (4) comprises a bracket (41) and a plurality of circulating hot oil thermal compensation units (42) fixedly connected to the bracket (41); adjacent circulating hot oil thermal compensation units (42) are connected end to end via a U-shaped tube A (43); a plurality of circulating hot oil thermal compensation units (42) are connected end to end via the U-shaped tube A (43) to form a circulating hot oil thermal compensator (40); one end of the circulating hot oil thermal compensator (40) is connected to a circulating hot oil outlet pipe B (34), and the other end of the circulating hot oil thermal compensator (40) is connected to a constant temperature hot oil storage tank (2).

7. An oil temperature control system according to claim 5, characterized in that: A single circulating hot oil heat compensation unit (42) comprises a food-grade stainless steel oil delivery pipe A (421) and a heat exchange tube shell A (422) fixedly connected to the outer wall of the food-grade stainless steel oil delivery pipe A (421), wherein a heating medium circulates inside the heat exchange tube shell A (422); a fourth solenoid valve (423) is fixedly connected to one end of the food-grade stainless steel oil delivery pipe (42), and a fourth oil temperature detector (424) is fixedly connected to the food-grade stainless steel oil delivery pipe A (421), wherein the fourth oil temperature detector (424) is located on one side of the fourth solenoid valve (423); the fourth oil temperature detector ( The fourth oil temperature detector (424) has the same structure as the first oil temperature detector (112), and is used to detect the oil temperature input into the circulating hot oil thermal compensation unit (42); the other end of the food-grade stainless steel oil delivery pipe A (421) is fixedly connected to a fifth solenoid valve (425), and the food-grade stainless steel oil delivery pipe A (421) is fixedly connected to a fifth oil temperature detector (426), and the fifth oil temperature detector (426) is located on one side of the fifth solenoid valve (425); the fifth oil temperature detector (426) is used to detect the temperature of the hot oil that has been thermally compensated by the single hot oil thermal compensation unit (42).

8. The oil temperature control system according to claim 5, characterized in that: The circulating hot oil thermal compensation device (4) further comprises a plurality of new oil thermal compensation units (44) fixedly connected to the bracket (41); adjacent new oil thermal compensation units (44) are connected end to end via a U-shaped tube B (45); a plurality of new oil thermal compensation units (44) are connected end to end via the U-shaped tube B (45) to form a new oil thermal compensator (400); one end of the new oil thermal compensator (400) is connected to a new oil storage tank, and the other end of the new oil thermal compensator (400) is connected to a constant temperature hot oil storage tank (2).

9. An oil temperature control system according to claim 8, characterized in that: The new oil heat compensation unit (44) comprises a food-grade stainless steel oil delivery pipe B (441) and a heat exchange tube shell B (442) fixedly connected to the food-grade stainless steel oil delivery pipe B (441), wherein a heat exchange medium circulates inside the heat exchange tube shell B (442); one end of the food-grade stainless steel oil delivery pipe B (441) is fixedly connected to a sixth solenoid valve (46), and the food-grade stainless steel oil delivery pipe B (441) is fixedly connected to a sixth oil temperature detector (47), wherein the sixth oil temperature detector (47) is located on one side of the sixth solenoid valve (46); the sixth oil temperature detector (47) is connected to the first oil temperature detector (47) and the second oil temperature detector (47) is connected to the first oil temperature detector (47). The sixth oil temperature detector (47) is used to detect the oil temperature input into the new oil heat compensation unit (44); the other end of the food-grade stainless steel oil delivery pipe B (441) is fixedly connected to a seventh solenoid valve (48), and the food-grade stainless steel oil delivery pipe B (441) is fixedly connected to a seventh oil temperature detector (49), and the seventh oil temperature detector (49) is located on one side of the seventh solenoid valve (48); the seventh oil temperature detector (49) is the same as the first oil temperature detector (112), and the seventh oil temperature detector (49) is used to detect the oil temperature input into the new oil heat compensation unit (44).

10. An oil temperature control system according to claim 9, characterized in that: The circulating hot oil thermal compensation device (4) further comprises a Y-shaped connector (5), wherein one Y-end of the Y-shaped connector (5) is connected to the output end of the circulating hot oil thermal compensator (40), and the other Y-end of the Y-shaped connector (5) is connected to the output end of the fresh oil thermal compensator (400); the branch end of the Y-shaped connector (5) is connected to an oil mixer (6); the oil mixer (6) is connected to the constant temperature hot oil storage tank (2); a modulating oil inlet pipe (21) is fixedly connected to the upper part of the constant temperature hot oil storage tank (2); the modulating oil inlet pipe (21) is connected to the branch end of the Y-shaped connector (5); the modulating oil inlet pipe (21) is fixedly connected to an eighth solenoid valve (211), and the modulating oil inlet pipe (21) is fixedly connected to an eighth oil temperature detector (212), and the eighth oil temperature detector (212) is located on one side of the eighth solenoid valve (211); the eighth oil temperature detector (212) is connected to the first The oil temperature detectors (112) have the same structure, and the eighth oil temperature detector (212) is used to detect the temperature of the oil input into the constant temperature hot oil storage tank (2); the bottom of the constant temperature hot oil storage tank (2) is fixedly connected to a modulating oil outlet pipe (22); the modulating oil outlet pipe (22) is fixedly connected to a ninth solenoid valve (221), and the modulating oil outlet pipe (22) is fixedly connected to a ninth oil temperature detector (222), and the ninth oil temperature detector (222) is located on one side of the ninth solenoid valve (221); the ninth oil temperature detector (222) has the same structure as the first oil temperature detector (112), and the ninth oil temperature detector (222) is used to detect the temperature of the oil output from the constant temperature hot oil storage tank (2); a thermal compensation unit (7) is connected between the modulating oil outlet pipe (22) and the constant temperature hot oil inlet pipe (11); the structure of the thermal compensation unit (7) is the same as the circulating hot oil thermal compensation unit (42) in the circulating hot oil thermal compensation device (4).

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