CN109832957B - Steam circulation system and steam circulation control method - Google Patents
Steam circulation system and steam circulation control method Download PDFInfo
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- CN109832957B CN109832957B CN201711229320.4A CN201711229320A CN109832957B CN 109832957 B CN109832957 B CN 109832957B CN 201711229320 A CN201711229320 A CN 201711229320A CN 109832957 B CN109832957 B CN 109832957B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 133
- 230000001502 supplementing effect Effects 0.000 claims description 29
- 238000001914 filtration Methods 0.000 claims description 24
- 238000010025 steaming Methods 0.000 claims description 19
- 230000014759 maintenance of location Effects 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 4
- 230000001737 promoting effect Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 125000004122 cyclic group Chemical group 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000004519 grease Substances 0.000 description 4
- 239000003463 adsorbent Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010795 Steam Flooding Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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Abstract
The invention relates to a steam circulation system, which comprises a steam cavity, a steam generator and a water supply device, wherein the water supply device is communicated with the steam generator, a steam inlet channel and a steam outlet channel are connected between the steam generator and the steam cavity, and a steam driving device is arranged on the steam outlet channel. In the steam circulation system, the steam outlet channel is connected and arranged between the steam generator and the steam cavity besides the steam inlet channel, so that redundant steam in the steam cavity can flow back to the steam generator through the action of the steam driving device, and then directly flows back to the steam cavity from the steam generator to realize the cyclic utilization of the steam. In the steam backflow process, the backflow steam can be utilized to ensure the steam quantity and the temperature in the steam cavity, so that the normal operation of the steam cavity is realized, and the energy utilization rate of the steam is substantially improved. Meanwhile, the steam generator can be stopped, so that the energy consumption of the steam generator is reduced, and the energy-saving and environment-friendly effects are achieved.
Description
Technical Field
The invention relates to the technical field of kitchen electricity, in particular to a steam circulation system and a steam circulation control method of a steam box.
Background
The steam generator is an important part in the steam box, and high-temperature steam generated by the steam generator continuously enters the steam box liner in the working process of the steam box, so that the safe working of the steam box is ensured, and redundant steam in the liner needs to be discharged outside the steam box by means of the renting of a fan in the working process of the steam box. The discharged high-temperature steam not only can cause potential safety hazard to users. In addition, the high temperature steam also can make the steam box surrounding environment moist after cooling, and the moist environment can in turn influence the performance of steam box. If the steam box is placed in a cabinet for use, the cabinet can be mildewed. In the steam discharging process, on one hand, energy waste is caused, and on the other hand, the discharged steam is often mixed with the taste of food materials, so that the kitchen environment is influenced.
Chinese patent application publication No. CN105444142a (application No. 201510994853.6) discloses a heat transfer device for high-efficiency closed steam cycle, wherein the disclosed heat transfer is transferred to a heat exchanger comprising a steam generator and a heat exchange unit, steam generated by the steam generator enters the heat exchange unit through a steam pipe, condensed water formed in the heat exchange unit flows back to the steam generator through a first return pipe, and the device also recycles the energy of the steam, but the energy loss of the steam in the condensation process is serious, and the energy utilization rate of the steam is low. And the steam generator needs to be continuously operated to ensure the steam supply, the service life of the steam generator is also relatively shortened.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a steam circulation system for directly reutilizing steam in the prior art.
The second technical problem to be solved by the present invention is to provide a steam cycle control method for the above prior art, which can substantially improve the steam energy utilization rate, and further reduce the working power of the steam generator.
The technical scheme adopted by the invention for solving the first technical problem is as follows: a steam circulation system, includes steaming chamber, steam generator and water supply installation, water supply installation with steam generator is linked together, its characterized in that: the steam generator is connected with the steam cavity, the steam circulation channel comprises a steam inlet channel for steam to enter the steam cavity from the steam generator and a steam outlet channel for steam to flow back to the steam generator from the steam cavity, and the steam outlet channel is provided with a steam driving device for promoting the steam to flow back to the steam cavity from the steam outlet channel.
In order to ensure the cleanliness of the steam which circularly enters the steam cavity, a filtering device is further arranged on the steam outlet channel.
Preferably, the filter means comprises an odour filter and an oil filter.
As an improvement, the filtering device comprises a filtering cylinder, filter screens respectively arranged at an inlet and an outlet of the filtering cylinder, and an adsorbing body filled in the filtering cylinder and positioned between the two filter screens, wherein the two filter screens form the greasy dirt filter, and the adsorbing body forms the odor filter.
In order to reduce the influence of high temperature water in the steam generator on the waterway device and the service life of the device, the water supply device comprises a water supply box and a water storage box, and the water storage box is communicated with the steam generator;
the water supply box is connected with a water inlet channel and a water return channel between the water supply box and the water storage box, the water inlet channel is connected with a water inlet pump and a water inlet valve, and the water return channel is provided with a water return pump and a water return valve.
In order to realize the automatic operation of the system, the steam chamber also comprises a control circuit board, a pressure sensor electrically connected with the control circuit board is arranged in the steam chamber, the control circuit board is also respectively and electrically connected with the steam driving device, the steam generator, the water inlet pump, the water inlet valve, the water return pump and the water return valve.
As an improvement, a temperature sensor electrically connected with the control circuit board is also arranged in the steaming cavity.
Preferably, the steam driving device is a steam pump.
The invention solves the second technical problem by adopting the technical proposal that: a steam cycle control method characterized by comprising the steps of:
s1, initializing, namely setting a steam cycle starting pressure threshold value, setting a steam supplementing starting pressure threshold value of a steam generator, and starting work;
s2, the control circuit board controls the steam generator to start to work to generate steam, the steam enters the steam cavity, and the control circuit board controls the steam driving device to keep a stop state;
s3, the control circuit board acquires pressure signals acquired by the pressure sensor in the steam cavity in real time, and judges whether the pressure in the steam cavity exceeds a set steam cycle starting pressure threshold value; if yes, S4 is carried out;
s4, the control circuit board controls the steam generator to stop working;
s5, the control circuit board controls the steam driving device to work so as to drive redundant steam in the steam cavity to enter the steam generator and reenter the steam cavity through the steam inlet channel;
s6, the control circuit board acquires pressure signals acquired by the pressure sensor in the steam cavity in real time, and judges whether the pressure in the steam cavity is smaller than a set steam generator steam supplementing starting pressure threshold value; if yes, S2 is carried out; if not, return to S5.
In order to ensure the stability of the operation in the steam cavity, in S1, setting a steam cavity pressure retention value after the steam is discharged corresponding to different temperature ranges in the steam cavity under a steam cycle starting pressure threshold;
in S3, the control circuit board acquires temperature data in the steam cavity when the pressure in the steam cavity reaches a steam cycle starting pressure threshold value, and determines a steam cavity pressure retention value after the current steam is discharged according to the temperature data;
in S5, when the control circuit board obtains the pressure data acquired by the pressure sensor in the steam cavity and reaches the steam cavity pressure retention value after the steam is discharged, the steam driving device is controlled to be closed.
In order to further reduce the influence on the operation in the steam cavity, in S1, setting a steam generator delay starting time value corresponding to different temperature ranges in the steam cavity under a steam supplementing starting pressure threshold value of the steam generator;
in S6, the control circuit board acquires temperature data in the steam cavity when the pressure in the steam cavity reaches the steam generator steam supplementing starting pressure threshold value, and further determines the delay starting time of the current steam generator, so that the control circuit board controls the delay starting of the steam generator according to the delay starting time of the current steam generator.
In order to ensure the stability of the operation in the steam cavity, in S1, setting a steam generator steam supplementing starting temperature threshold;
in S6, when the pressure in the steaming cavity reaches the steam generator steam supplementing starting pressure threshold value, the control circuit board obtains temperature data in the steaming cavity, if the temperature data in the steaming cavity is smaller than or equal to the steam generator steam supplementing starting temperature threshold value at the moment, S2 is directly carried out, and if the temperature data in the steaming cavity is larger than the steam generator steam supplementing starting temperature threshold value at the moment, the control circuit board waits for obtaining that the temperature in the steaming cavity is reduced to the steam generator steam supplementing starting temperature threshold value, and then S2 is carried out.
As an improvement, before the steam generator is started, the control circuit board controls the water inlet valve to be started, and the control circuit board simultaneously controls the water inlet pump to start working, so that the water in the water supply box is pumped into the water storage box, and the water in the water storage box flows into the steam generator;
when the steam generator stops working, the control circuit board controls the water inlet valve to be closed, and simultaneously controls the water inlet pump to stop working.
In order to reduce the influence of high-temperature water in the steam generator on waterway devices and the service life of the devices, after a control circuit board receives an end working signal to water in the water return process, the control circuit board controls a water inlet valve to be opened, and simultaneously controls a water inlet pump to start working; after the water inlet pump works for a period of time, the control circuit board controls the water inlet valve to be closed, and simultaneously controls the water inlet pump to stop working; then the control circuit board controls the water return valve to open, and simultaneously controls the water return pump to start to work, so that water in the steam generator and the water storage box is returned to the water supply box.
Compared with the prior art, the invention has the advantages that: in the steam circulation system, the steam outlet channel is connected and arranged between the steam generator and the steam cavity besides the steam inlet channel, so that redundant steam in the steam cavity can flow back to the steam generator through the action of the steam driving device, and then directly flows back to the steam cavity from the steam generator to realize the cyclic utilization of the steam. In the steam backflow process, the backflow steam can be utilized to ensure the steam quantity and the temperature in the steam cavity, so that the normal operation of the steam cavity is realized, and the energy utilization rate of the steam is substantially improved. Meanwhile, the steam generator can be stopped, so that the energy consumption of the steam generator is reduced, and the energy-saving and environment-friendly effects are achieved.
The steam circulation control method improves the energy efficiency of the electric appliance applying the steam circulation system, and can also effectively avoid the harm of the steam to a user in the discharging process.
Drawings
Fig. 1 is a schematic structural diagram of a steam cycle system according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view of a filter device in an embodiment of the invention.
FIG. 3 is a flow chart of a steam cycle method in an embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 and 2, the steam circulation system is specifically described in the present embodiment as being used in an electric steamer, but the steam circulation system is not limited to be applied in an electric steamer, and may be applied to various electric appliances provided with a steam generator.
The steam circulation system in this embodiment includes a steam cavity 1, a steam generator 2, a water supply device and a control circuit board 10, and the steam cavity 1 is an inner container of the electric steam box. A steam circulation channel is connected between the steam generator 2 and the steam cavity 1, the steam circulation channel comprises a steam inlet channel 3 for steam to enter the steam cavity 1 from the steam generator 2 and a steam outlet channel 4 for steam to flow back to the steam generator 2 from the steam cavity 1, and the steam outlet channel 4 is provided with a steam driving device 5 for promoting the steam to flow back from the steam outlet channel 4 to the steam cavity 1. The steam outlet channel 4 is also provided with a steam driving device 5 and a filtering device 6.
Wherein the steam drive device 5 adopts a steam pump, in order to ensure the service performance of the steam pump, the steam pump is prevented from being influenced by grease and smell mixed in the steam, and the steam pump is arranged at the downstream of the filtering device 6.
The filtering device 6 comprises a filtering cylinder 61, two filtering screens 62 and an adsorbing body 63, wherein the two filtering screens 62 are respectively arranged at the inlet and the outlet of the filtering cylinder 61, and the edges of the filtering screens 62 are connected with the inner wall of the filtering cylinder 61. A plurality of filter screens 62 can be arranged according to the requirement, each filter screen 62 together forms an oil stain filter, grease in steam passing through the filter cartridge 61 is adhered to the filter screen 62, and the filtering capability of the filter screen 62 on grease can be ensured by replacing the filter screen 62 or cleaning the filter screen 62. The adsorbent 63 is filled in the filter cartridge 61 and is located between the two filter screens 62, and the adsorbent 63 is made of a material having adsorption capacity, for example, activated carbon may be filled in the filter cartridge 61 to form a filter body. The adsorbent 63 constitutes an odor filter. The steam delivered from the interior of the steaming chamber 1 to the steam generator 2 has been filtered by the filtering means 6 to remove grease, particles and smell carried by the food therein, and such steam is returned to the steaming chamber 1 without affecting the taste of the cooked food in the steaming chamber 1. And meanwhile, the kitchen environment is not influenced.
The water supply device comprises a water supply box 7 and a water storage box 8, wherein the water storage box 8 is communicated with the steam generator 2, and water in the water storage box 8 can automatically flow into the steam generator 2.
A water inlet channel 91 and a water return channel 92 are connected between the water supply box 7 and the water storage box 8, a water inlet pump 911 and a water inlet valve 912 are connected on the water inlet channel 91, and a water return pump 921 and a water return valve 922 are arranged on the water return channel 92.
The pressure sensor 101 and the temperature sensor 102 are arranged in the steaming cavity 1, and the positions of the pressure sensor 101 and the temperature sensor 102 can be specifically set according to the specific structure of the steaming cavity 1. The control circuit board 10 is electrically connected with the steam pump, the steam generator 2, the water inlet pump 911, the water inlet valve 912, the water return pump 921, the water return valve 922, the pressure sensor 101 and the temperature sensor 102 respectively, so that the control circuit board 10 can control the steam pump, the steam generator 2, the water inlet pump 911, the water inlet valve 912, the water return pump 921, the water return valve 922, the pressure sensor 101 and the temperature sensor 102 to ensure that the cooperation work is carried out. The control circuit board 10 may employ a main control circuit board 10 within an electric steamer.
As shown in fig. 3, the steam cycle control method implemented by the aforementioned steam cycle system includes the steps of:
s1, initializing, namely setting a steam cycle starting pressure threshold, setting a steam supplementing starting pressure threshold of a steam generator 2, and setting a pressure retention value of a steam cavity 1 after steam is discharged corresponding to different temperature ranges in the steam cavity 1 under the steam cycle starting pressure threshold; setting a steam supplementing starting temperature threshold of the steam generator 2; setting a stop working temperature threshold value for stopping the steam generator;
starting work;
s2, the control circuit board 10 controls the water inlet valve 912 to be opened, and the control circuit board 10 simultaneously controls the water inlet pump 911 to start working, so that water in the water supply box 7 is pumped into the water storage box 8, and water in the water storage box 8 flows into the steam generator 2;
the control circuit board 10 controls the steam generator 2 to start to work so as to generate steam, the steam enters the steam cavity 1, and the control circuit board 10 controls the steam driving device 5 to keep a stop state;
s3, the control circuit board 10 acquires pressure signals acquired by the pressure sensor 101 in the steam cavity 1 in real time, and judges whether the pressure in the steam cavity 1 exceeds a set steam cycle starting pressure threshold value; if yes, S4 is carried out;
meanwhile, the control circuit board 10 acquires temperature data in the steam cavity 1 when the pressure in the steam cavity 1 reaches a steam cycle starting pressure threshold value, and determines a steam cavity 1 pressure retention value after the current steam discharge according to the temperature data;
s4, after the steam generator 2 works until reaching a stop working temperature threshold value for stopping the steam generator, the control circuit board 10 controls the steam generator 2 to stop working;
the control circuit board 10 controls the water inlet valve 912 to be closed and controls the water inlet pump 911 to stop working;
s5, the control circuit board 10 controls the steam driving device 5 to work so as to drive redundant steam in the steam cavity 1 to enter the steam generator 2 and reenter the steam cavity 1 through the steam inlet channel 3;
when the control circuit board 10 acquires the pressure data acquired by the pressure sensor 101 in the steam cavity 1 and reaches the pressure retention value of the steam cavity 1 after the steam is discharged, the steam driving device 5 is controlled to be closed;
s6, the control circuit board 10 acquires pressure signals acquired by the pressure sensor 101 in the steam cavity 1 in real time, and judges whether the pressure in the steam cavity 1 is smaller than a set steam generator 2 steam supplementing starting pressure threshold value; if not, returning to S5;
if yes, the control circuit board 10 acquires temperature data in the steam cavity 1 when the pressure in the steam cavity 1 reaches the steam generator 2 steam supplementing starting pressure threshold, if the temperature data in the steam cavity 1 is smaller than or equal to the steam generator 2 steam supplementing starting temperature threshold at the moment, S2 is directly carried out, if the temperature data in the steam cavity 1 is larger than the steam generator 2 steam supplementing starting temperature threshold at the moment, the control circuit board 10 waits for the control circuit board 10 to acquire that the temperature in the steam cavity 1 is reduced to the steam generator 2 steam supplementing starting temperature threshold, and then S2 is carried out; through the judging process of the temperature data, the steam heat can be effectively utilized to the greatest extent under the condition of ensuring the normal operation in the steam cavity 1, and the improvement of the energy utilization rate is more facilitated;
in addition, the improvement of the energy utilization rate can be realized by another temperature control method: namely, in S1, setting a delay starting time value of the steam generator 2 corresponding to different temperature ranges in the steam cavity 1 under the steam supplementing starting pressure threshold of the steam generator 2;
in S6, the control circuit board 10 obtains temperature data in the steam cavity 1 when the pressure in the steam cavity 1 reaches the steam supplementing starting pressure threshold of the steam generator 2, and further determines the delay starting time of the current steam generator 2, so that the control circuit board 10 controls the delay starting of the steam generator 2 according to the delay starting time of the current steam generator 2;
s7, when the control circuit board 10 detects the end working signal, after the control circuit board 10 receives the end working signal, the control circuit board 10 controls the water inlet valve 912 to be opened, and simultaneously controls the water inlet pump 911 to start working; thus, as the low-temperature water in the water supply box 7 flows into the water storage box 8, the low-temperature water correspondingly flows into the steam generator 2 and is mixed with the high-temperature water in the steam generator 2, so that the water temperatures in the steam generator 2 and the water storage box 8 gradually decrease; after the water inlet pump 911 works for a period of time, the water temperature of the water in the steam generator 2 and the water storage box 8 can not influence the performances of the water return pump 921 and the water return valve 922 any more, and the control circuit board 10 controls the water inlet valve 912 to be closed and controls the water inlet pump 911 to stop working at the same time; then the control circuit board 10 controls the water return valve 922 to open, and simultaneously controls the water return pump 921 to start working, so that water in the steam generator 2 and the water storage box 8 is returned to the water supply box 7, and the dry environment in the steam generator 2 and the water storage box 8 is ensured.
The steam circulation control method can effectively and virtually realize the recycling of steam energy, greatly improve the energy utilization rate of a steam circulation system and reduce energy consumption. Meanwhile, the steam generator 2 only needs to work intermittently, continuous work is not needed, the energy consumption of the steam generator 2 is reduced, and the service life of the steam generator 2 is prolonged.
Claims (13)
1. The utility model provides a steam circulation system, includes steaming chamber (1), steam generator (2) and water supply installation, water supply installation with steam generator (2) are linked together, its characterized in that: the steam circulation channel is connected between the steam generator (2) and the steam cavity (1), and comprises a steam inlet channel (3) for steam to enter the steam cavity (1) from the steam generator (2) and a steam outlet channel (4) for steam to flow back to the steam generator (2) from the steam cavity (1), wherein the steam outlet channel (4) is provided with a steam driving device (5) for promoting the steam to flow back to the steam cavity (1) from the steam outlet channel (4);
the steam cavity (1) is internally provided with a pressure sensor (101) electrically connected with the control circuit board (10), and the control circuit board (10) is also electrically connected with the steam driving device (5), the steam generator (2), the water inlet pump (911), the water inlet valve (912), the water return pump (921) and the water return valve (922) respectively;
the steam cycle control method of the steam cycle system includes the steps of:
s1, initializing, setting a steam cycle starting pressure threshold value, setting a steam supplementing starting pressure threshold value of a steam generator (2), and starting work;
s2, a control circuit board (10) controls the steam generator (2) to start to work so as to generate steam, the steam enters the steam cavity (1), and the control circuit board (10) controls the steam driving device (5) to keep a stop state;
s3, the control circuit board (10) acquires pressure signals acquired by the pressure sensor (101) in the steam cavity (1) in real time, and judges whether the pressure in the steam cavity (1) exceeds a set steam cycle starting pressure threshold value; if yes, S4 is carried out;
s4, the control circuit board (10) controls the steam generator (2) to stop working;
s5, a control circuit board (10) controls the steam driving device (5) to work, so that redundant steam in the steam cavity (1) is driven to enter the steam generator (2) and reenter the steam cavity (1) through the steam inlet channel (3);
s6, the control circuit board (10) acquires pressure signals acquired by the pressure sensor (101) in the steam cavity (1) in real time, and judges whether the pressure in the steam cavity (1) is smaller than a set steam generator (2) steam supplementing starting pressure threshold value; if yes, S2 is carried out; if not, return to S5.
2. The steam cycle system of claim 1, wherein: and the steam outlet channel (4) is also provided with a filtering device (6).
3. The steam cycle system of claim 2, wherein: the filter device (6) comprises an odor filter and an oil stain filter.
4. A steam cycle system according to claim 3, wherein: the filtering device (6) comprises a filtering cylinder (61), filtering screens (62) respectively arranged at the inlet and the outlet of the filtering cylinder (61), and an adsorbing body (63) filled in the filtering cylinder (61) and positioned between the two filtering screens (62), wherein the two filtering screens (62) form the greasy dirt filter, and the adsorbing body (63) forms the odor filter.
5. The steam cycle system of claim 1, wherein: the steam chamber is characterized by further comprising a control circuit board (10), wherein a pressure sensor (101) electrically connected with the control circuit board (10) is arranged in the steam chamber (1), and the control circuit board (10) is further electrically connected with the steam driving device (5), the steam generator (2), the water inlet pump (911), the water inlet valve (912), the water return pump (921) and the water return valve (922) respectively.
6. The steam cycle system of claim 5, wherein: a temperature sensor (102) electrically connected with the control circuit board (10) is also arranged in the steaming cavity (1).
7. A steam cycle system according to any one of claims 1 to 4, wherein: the steam driving device (5) is a steam pump.
8. A steam cycle control method implemented using the steam cycle system according to any one of claims 1 to 6, characterized by comprising the steps of:
s1, initializing, setting a steam cycle starting pressure threshold value, setting a steam supplementing starting pressure threshold value of a steam generator (2), and starting work;
s2, a control circuit board (10) controls the steam generator (2) to start to work so as to generate steam, the steam enters the steam cavity (1), and the control circuit board (10) controls the steam driving device (5) to keep a stop state;
s3, the control circuit board (10) acquires pressure signals acquired by the pressure sensor (101) in the steam cavity (1) in real time, and judges whether the pressure in the steam cavity (1) exceeds a set steam cycle starting pressure threshold value; if yes, S4 is carried out;
s4, the control circuit board (10) controls the steam generator (2) to stop working;
s5, a control circuit board (10) controls the steam driving device (5) to work, so that redundant steam in the steam cavity (1) is driven to enter the steam generator (2) and reenter the steam cavity (1) through the steam inlet channel (3);
s6, the control circuit board (10) acquires pressure signals acquired by the pressure sensor (101) in the steam cavity (1) in real time, and judges whether the pressure in the steam cavity (1) is smaller than a set steam generator (2) steam supplementing starting pressure threshold value; if yes, S2 is carried out; if not, return to S5.
9. The steam cycle control method of claim 8, wherein: in S1, setting a pressure retention value of a steam cavity (1) after steam is discharged corresponding to different temperature ranges in the steam cavity (1) under a steam cycle starting pressure threshold;
in S3, the control circuit board (10) acquires temperature data in the steam cavity (1) when the pressure in the steam cavity (1) reaches a steam cycle starting pressure threshold value, and determines a pressure retention value of the steam cavity (1) after the current steam is discharged according to the temperature data;
in S5, when the control circuit board (10) acquires the pressure data acquired by the pressure sensor (101) in the steam cavity (1) and reaches the pressure retention value of the steam cavity (1) after the current steam is discharged, the steam driving device (5) is controlled to be closed.
10. The steam cycle control method of claim 8, wherein: in S1, setting a delay starting time value of the steam generator (2) corresponding to different temperature ranges in the steam cavity (1) under a steam supplementing starting pressure threshold of the steam generator (2);
in S6, the control circuit board (10) acquires temperature data in the steam cavity (1) when the pressure in the steam cavity (1) reaches a steam supplementing starting pressure threshold value of the steam generator (2), and further determines delay starting time of the current steam generator (2), so that the control circuit board (10) controls the delay starting of the steam generator (2) according to the delay starting time of the current steam generator (2).
11. The steam cycle control method of claim 8, wherein: in S1, setting a steam generator (2) steam supplementing starting temperature threshold;
in S6, when the pressure in the steaming cavity (1) reaches the steam generator (2) steam supplementing starting pressure threshold value, the control circuit board (10) acquires temperature data in the steaming cavity (1), if the temperature data in the steaming cavity (1) is smaller than or equal to the steam generator (2) steam supplementing starting temperature threshold value at the moment, the S2 is directly carried out, and if the temperature data in the steaming cavity (1) is larger than the steam generator (2) steam supplementing starting temperature threshold value at the moment, the control circuit board (10) waits for the temperature in the steaming cavity (1) to be reduced to the steam generator (2) steam supplementing starting temperature threshold value, and then the S2 is carried out.
12. The steam cycle control method of claim 8, wherein: before the steam generator (2) is started, the control circuit board (10) controls the water inlet valve (912) to be started, and the control circuit board (10) simultaneously controls the water inlet pump (911) to start working, so that the water in the water supply box (7) is pumped into the water storage box (8), and the water in the water storage box (8) flows into the steam generator (2);
when the steam generator (2) stops working, the control circuit board (10) controls the water inlet valve (912) to be closed, and simultaneously controls the water inlet pump (911) to stop working.
13. The steam cycle control method of claim 12, wherein: when the control circuit board (10) receives the working ending signal, the control circuit board (10) controls the water inlet valve (912) to be opened, and simultaneously controls the water inlet pump (911) to start working; after the water inlet pump (911) works for a period of time, the control circuit board (10) controls the water inlet valve (912) to be closed, and simultaneously controls the water inlet pump (911) to stop working; then the control circuit board (10) controls the water return valve (922) to open, and simultaneously controls the water return pump (921) to start to work, so that water in the steam generator (2) and the water storage box (8) is returned to the water supply box (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711229320.4A CN109832957B (en) | 2017-11-29 | 2017-11-29 | Steam circulation system and steam circulation control method |
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| CN201711229320.4A CN109832957B (en) | 2017-11-29 | 2017-11-29 | Steam circulation system and steam circulation control method |
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| CN109832957A CN109832957A (en) | 2019-06-04 |
| CN109832957B true CN109832957B (en) | 2023-10-20 |
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| CN112426028B (en) * | 2020-10-30 | 2022-06-07 | 华帝股份有限公司 | Steam cooking equipment and control method thereof |
| CN112515599B (en) * | 2020-11-30 | 2021-11-30 | 珠海格力电器股份有限公司 | Dishwasher, control method for dishwasher, and storage medium |
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| CN109832957A (en) | 2019-06-04 |
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