A refrigeration type integrated stove based on steam jet refrigeration and control method thereof

Abstract

The present invention belongs to the technical field of integrated stoves, and discloses a refrigeration type integrated stove based on steam jet refrigeration and a control method thereof, including an integrated stove box for installing a steam jet refrigeration device and a cold air flow device, which plays a supporting role; a cold air flow device for providing power through an induced draft fan, and using an air inlet pipe, a cold air pipe and an air duct to guide the flow of cold air; a steam jet refrigeration device for absorbing the temperature of residual steam at the outlet of a steam box, lowering the ambient temperature, and delivering cold air to a kitchen space to realize the refrigeration function of an integrated stove. The present invention receives the temperature of residual steam through an external steam generating chamber, improves the energy recovery rate of residual steam in the steam box, and produces condensed water by setting a steam ejector, lowers the ambient air temperature, and delivers cold air to the kitchen space to realize the refrigeration function of an integrated stove; the condenser is set at the volute, and the volute is heated to promote grease degradation and improve the user experience.

Description

Technical Field

[0001] The present invention belongs to the technical field of integrated stoves, and in particular relates to a refrigeration-type integrated stove based on steam jet refrigeration and a control method thereof. Background Art

[0002] At present, integrated stoves are kitchen appliances that have the functions of collecting and exhausting oil smoke, steaming and baking food, and storing tableware, and are favored by a large number of users. However, in actual situations, the narrow kitchen environment will lead to a stuffy cooking environment. Considering the need to provide a comfortable cooking environment for the family kitchen, the temperature of the cooking work area is reduced by providing a certain amount of air volume and a certain amount of cooling capacity on the basis of the existing integrated stove equipment. Since it is difficult to install refrigeration equipment in the kitchen under the existing technical conditions, the present invention adds the components of the refrigeration cycle to the integrated stove, reduces the refrigeration cost of the kitchen environment, improves the utilization rate of the residual steam in the steam box, and enhances the user experience.

[0003] Through the above analysis, the problems and defects of the prior art are as follows: the existing integrated stove does not have a cooling function and cannot reduce the temperature of the cooking work area. In addition, the main problem of the prior art is that the temperature of the cooking area is high, causing users to sweat during use, affecting the user experience. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a refrigeration-type integrated stove based on steam jet refrigeration and a control method thereof.

[0005] The present invention is implemented in this way: a refrigeration-type integrated stove based on steam jet refrigeration comprises:

[0006] The steam jet refrigeration device is used to absorb the residual steam temperature at the steam box outlet, reduce the ambient temperature, and deliver cold air to the kitchen space to realize the refrigeration function of the integrated stove;

[0007] The cold air flow device is used to provide power through the induced draft fan and guide the cold air flow by using the air inlet pipe, the cold air pipe and the air duct;

[0008] The integrated stove box is used to install the steam jet refrigeration device and the cold air flow device to support the overall device.

[0009] Furthermore, the integrated stove box includes an integrated stove box body, an integrated stove top, a stove, a steam oven, and a fan;

[0010] An integrated stove top is installed on the integrated stove box body, a stove is installed on the upper end surface of the integrated stove box body, a steam oven is embedded in the middle and lower part of the integrated stove box body, and a fan is installed at the lower rear side of the integrated stove box body.

[0011] Furthermore, the integrated stove box body is rectangular in shape, with left and right air outlets on the upper part of the integrated stove box body; the top of the integrated stove is overall in an inverted L shape, and the wall is made of stainless steel; the steam oven is overall rectangular in shape, and the fan is a fan system compatible with the integrated stove.

[0012] Further, the steam jet refrigeration device comprises a steam generating chamber, an ejector, an evaporation chamber, a condenser, a throttle valve, a micro water pump, and a partition;

[0013] The evaporation chamber is fixed to the partition by screws, and the injector is installed on the partition by screws;

[0014] The steam generation chamber is placed in a water tank connected to the integrated stove box, and the outlet of the heat exchange tube is connected to the outlet of the water tank;

[0015] The condenser is located at the volute of the integrated stove, and the micro water pump is fixedly connected to the partition by screws. The heat exchange tube is installed at the bottom of the sink, and the outlet is connected to the water outlet pipe of the sink, sharing a water outlet channel and fixed with screws.

[0016] Furthermore, the evaporation chamber is stepped as a whole, including an evaporation chamber main box body, an evaporation chamber sub-box body, and evaporation chamber pipelines; the evaporation chamber sub-box body is rectangular, made of stainless steel, with an air outlet and a gas connecting pipe hole on the upper part, and an air inlet on the lower part of the box body. The evaporation chamber pipeline is a serpentine evaporation pipeline made of aluminum fiber alloy, located inside the evaporation chamber sub-box body, and fixedly connected to the box body with screws. A steam outlet and a gas connecting pipe hole are provided on the upper part of the evaporation chamber main box body, the steam pipe is connected to the lower end of the ejector, and a refrigerant reflux inlet is provided at the lower part.

[0017] Furthermore, the steam generating chamber is rectangular in shape as a whole, and includes a generating chamber box, a gas connecting pipe and a steam outflow pipe; the generating chamber box is rectangular in shape as a whole, and is made of stainless steel, with a steam outlet at the top connected to the left inlet of the ejector, a refrigerant reflux port at the bottom, a steam inlet and a residual liquid outlet at the side plate, and the residual liquid pipeline is connected to the water tank outlet;

[0018] The ejector outlet is connected to the condenser, which is in a circular shape and surrounds the volute. A three-way interface is provided, one end of which is connected to the throttle valve to return to the evaporation chamber, and the other end is connected to the micro water pump to return to the steam generation chamber;

[0019] The micro water pump is a micro centrifugal pump, and the partition is rectangular in shape and made of aluminum alloy.

[0020] Further, the cold air flow device includes an air inlet, an induced draft fan, an air inlet pipe, an air outlet pipe and an air outlet;

[0021] The air inlet filter is cylindrical in shape as a whole, with air inlet holes on the surface. It is made of aluminum alloy, located at the partition and fixed to the partition with screws; the induced draft fan is a small axial flow fan, embedded in the air inlet duct; the air inlet filter is part of the air inlet duct and is placed at the air inlet for fresh air purification.

[0022] Furthermore, the air inlet pipe is L-shaped as a whole and is made of galvanized steel plate, one end of which is welded and fixed to the partition, and the other end is welded and fixed to the evaporator box;

[0023] There are two air outlet ducts with a diameter of 40-50 mm. The cold air duct is in a double L-shape as a whole and is made of galvanized steel plate. One end is welded and fixed to the auxiliary box of the evaporation chamber, and the other end is welded and fixed to the air duct.

[0024] Furthermore, the air duct is cylindrical in shape as a whole, and includes an air duct box, a temperature probe and an air outlet filter;

[0025] The air duct box is made of stainless steel and is embedded and installed in the upper part of the integrated stove box body; the air outlet filter is made of aluminum alloy, the size of which is compatible with the air duct box, and is embedded and installed at the air outlet of the air duct box.

[0026] Another object of the present invention is to provide a control method for a refrigeration type integrated stove based on steam injection refrigeration, the control method for a refrigeration type integrated stove based on steam injection refrigeration comprising:

[0027] Step 1: Cooking starts. The residual steam in the steam box enters the steam generating chamber to exchange heat with the refrigerant, generating high-temperature and high-pressure refrigerant steam, which is ejected through the ejector to form a low-pressure environment, forcing the refrigerant in the evaporation chamber to vaporize and reduce the refrigerant temperature in the lower part of the evaporation chamber.

[0028] Step 2: The induced draft fan is started, and the normal temperature air flows through the auxiliary box of the evaporation chamber, the heat is transferred to the condensed water, and the temperature of the air outside the tube is reduced;

[0029] Step 3: The mixed steam enters the condenser located at the volute through the pipeline, and the heat of the working fluid is taken away by the air and cooled into liquid;

[0030] Step 4: After cooling, part of the working fluid returns to the evaporation chamber through the throttle valve via the micro water pump, and part returns to the steam generation chamber to form working fluid circulation refrigeration.

[0031] The present invention provides a steam generator to absorb the temperature of the residual steam at the outlet of the integrated stove steam box, thereby improving the recycling rate of the residual steam of the integrated stove;

[0032] The present invention heats the volute by arranging a condenser at the volute, thereby promoting grease degradation and improving user experience;

[0033] The present invention provides a steam ejector to produce condensed water, lower the ambient air temperature, and deliver cold air to the cooking space, thereby realizing the refrigeration function of the integrated stove.

[0034] The present invention directly draws air from the oil fume passage by arranging an air duct and a filter, thereby saving installation space. At the same time, the air volume is positively correlated with the power of the range hood, thereby optimizing the user experience.

[0035] The present invention can improve the energy recovery rate of residual steam in the steam box, reduce the ambient air temperature, transport cold air to the kitchen space, and realize the refrigeration function of the integrated stove; it can heat the volute, promote oil degradation, and improve the user experience.

[0036] The technical solution of the present invention fills the technical gap in the industry at home and abroad: it provides a refrigeration-type integrated stove and realizes the reuse of residual steam in the steam box, thereby improving energy utilization.

[0037] Does the technical solution of the present invention solve the technical problems that people have always been eager to solve but have never succeeded in solving: 1) Provide cool air without affecting the kitchen space to improve the stuffy environment when users cook; 2) Solve the problem of steam exhaust and realize the reuse of steam from the steamer. The steam exhaust after energy supply can be liquefied and discharged directly through the sink outlet.

[0038] Whether the technical solution of the present invention overcomes technical prejudice: the residual steam in the steam box does not necessarily only play a preheating role, but can also serve as an energy provider for the hot end of the refrigeration system. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a structural schematic diagram of a refrigeration-type integrated stove based on steam jet refrigeration provided in an embodiment of the present invention;

[0040] Figure 2 is a left side cross-sectional view of a refrigeration-type integrated stove based on steam jet refrigeration provided in an embodiment of the present invention;

[0041] Figure 3 is a schematic diagram of an air duct provided by an embodiment of the present invention;

[0042] Figure 4 is a schematic diagram of the structure of the filter provided by an embodiment of the present invention;

[0043] Figure 5 is a schematic structural diagram of a built-in micro induced-air fan provided in an embodiment of the present invention;

[0044] Figure 6 is a right side cross-sectional view of a refrigeration-type integrated stove based on steam jet refrigeration provided by an embodiment of the present invention;

[0045] Figure 7 is a schematic diagram of the structure of a condenser provided in an embodiment of the present invention;

[0046] Figure 8 is a schematic diagram of a refrigeration system provided by an embodiment of the present invention;

[0047] Fig. 9 is a schematic diagram of a steam ejector provided by an embodiment of the present invention;

[0048] Fig.10 This is a schematic diagram of the refrigeration principle of an integrated stove provided by an embodiment of the present invention;

[0049] In the figure: 1. Refrigerant steam outlet pipe; 2. Steam box residual steam inlet pipe; 3. Refrigerant reflux pipe; 4. Air outlet; 5. Steam box; 6. Ventilation port; 7. Air inlet hood; 8. Air outlet pipe; 9. Heat exchange pipe; 10. Air inlet pipe; 11. Ejector left steam inlet; 12. Steam box residual steam outlet pipe; 13. Condensation pipe; 14. Throttle valve; 15. Mini water pump; 16. Condensation pipe ring; 17. Volute; 18. Ejector; 19. Ejector steam outlet pipe; 21. Three-way pipe; 22. Steam generating chamber; 23. Water tank; 24. Air inlet filter; 25. Induced fan. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0051] In order to enable those skilled in the art to fully understand how to implement the present invention in detail, this section is an explanatory embodiment that expands and describes the technical solution of the claims.

[0052] like Figure 1 - Fig. 9 As shown, the steam jet refrigeration integrated stove provided by the embodiment of the present invention comprises: an integrated stove box, a steam jet refrigeration device, and a cold air flow device;

[0053] The integrated stove box in the embodiment of the present invention is rectangular in shape as a whole, and includes an integrated stove box body, an air inlet 6, a stove, a steam oven 5, and a fan 7;

[0054] An integrated stove top is installed on the integrated stove box body, a stove is installed on the upper end surface of the integrated stove box body, a steam oven 5 is embedded in the middle and lower part of the integrated stove box body, and a fan is installed at the lower back of the integrated stove box body.

[0055] Furthermore, the integrated stove box body is rectangular, with left and right air outlets 6 at the bottom of the integrated stove; the top of the integrated stove is an inverted L-shape as a whole, and the wall is made of stainless steel; the steam oven is rectangular as a whole, and the fan is a fan system compatible with the integrated stove.

[0056] The steam jet refrigeration device in the embodiment of the present invention comprises a steam generating chamber 22, an ejector 18, an evaporation chamber 10, a condenser 13, a throttle valve 14, a micro water pump 15, and a partition;

[0057] The evaporation chamber 10 is fixed to the partition by screws, and the ejector 18 is installed on the partition by screws; the steam generation chamber 22 is placed in a water tank 23 connected to the integrated stove, and the outlet of the heat exchange tube is connected to the outlet of the water tank 23. The condenser 13 is located at the volute 17 of the integrated stove, and the micro water pump 15 is fixedly connected to the partition by screws.

[0058] Furthermore, the evaporation chamber 10 is stepped as a whole, including the evaporation chamber main box, the evaporation chamber sub-box, and the evaporation chamber pipeline; the evaporation chamber sub-box is rectangular, made of stainless steel, with an air outlet 8 and a gas connecting pipe hole on the upper part, an air inlet connected to the air inlet pipe 11 on the partition, and the evaporation chamber pipeline is a serpentine evaporation pipeline 9 made of aluminum fiber alloy, located inside the evaporation chamber sub-box, and fixedly connected to the box with screws, and the evaporator pipeline diameter is 15-20mm. The upper part of the evaporation chamber main box is provided with a steam outlet and a gas connecting pipe hole, the steam pipeline is connected to the lower port of the ejector, and the lower part is provided with a refrigerant reflux inlet;

[0059] The steam generating chamber is rectangular as a whole, including a generating chamber box, a gas connecting pipe, and a steam outlet pipe; the generating chamber box is rectangular as a whole, made of stainless steel, with a steam outlet 1 at the top connected to the left inlet of the ejector, a refrigerant reflux port 3 at the bottom, a steam inlet 2 and a residual liquid outlet at the side panel, and the residual liquid pipeline is connected to the water tank outlet.

[0060] Furthermore, the ejector outlet is connected to the condenser, which is in an annular shape as a whole and surrounds the volute 17. A three-way interface 21 is provided, one end of which is connected to the throttle valve 14 to return to the evaporation chamber, and the other end is connected to the micro water pump to return to the steam generation chamber.

[0061] The micro water pump is a micro centrifugal pump, which is fixedly connected to the first partition by screws; the partition is rectangular as a whole, made of aluminum alloy, with fan installation holes on the surface, and is fixed to the integrated stove box body by welding; the number of air inlet pipes 10 is 1, and the diameter is 50-60mm.

[0062] The cold air flow device in the embodiment of the present invention includes an air inlet 6 , an induced draft fan 7 , an air inlet pipe 10 , an air outlet pipe 8 , and an air outlet 4 .

[0063] Furthermore, the air inlet filter is cylindrical in shape as a whole, with air inlet holes on the surface, made of aluminum alloy, located on the partition, and fixed to the partition by screws; the induced draft fan is a small axial flow fan, embedded in the air inlet duct;

[0064] Furthermore, the air inlet pipe is L-shaped as a whole and is made of galvanized steel plate, one end of which is welded and fixed to the partition, and the other end is welded and fixed to the evaporator box;

[0065] There are 2 cold air ducts with a diameter of 40-50mm; the cold air duct is a double L-shape as a whole, made of galvanized steel plate, one end of which is welded and fixed to the evaporation chamber sub-box, and the other end is welded and fixed to the air duct; the air duct is a whole cylindrical, including an air duct box, a temperature probe, and an air outlet filter.

[0066] Furthermore, the air duct box is made of stainless steel and is embedded and installed in the upper part of the integrated stove box body; the air outlet filter is made of aluminum alloy, the size of which is compatible with the air duct box, and is embedded and installed at the air outlet of the air duct box.

[0067] Refrigeration system: The steam waste enters the steam generating chamber 22 located in the water tank through the steam box waste steam inlet pipe 2, heats the refrigerant in the generating chamber, and vaporizes a large amount of refrigerant. The high-pressure refrigerator steam enters the integrated stove through the refrigerant steam outlet pipe, and then enters the ejector 18 through the ejector left steam inlet 11, so that a low-pressure environment is formed in the evaporation chamber connected thereto, prompting the refrigerant in the evaporation chamber to vaporize, generate low-temperature and low-pressure steam that enters the ejector 18, and cools the refrigerant in the heat exchange tube 9 below the evaporation chamber. The medium-temperature and medium-pressure steam mixed in the ejector 18 enters the condensation pipe 13 through the ejector steam outlet pipe 19, and releases heat in the volute 17 by the condensation pipe ring 16, so that the refrigerant vapor is liquefied, and flows back to the evaporation chamber and the steam generating chamber through the micro water pump 15, the throttle valve 14 and the three-way pipe 21, and the refrigerant working medium completes the cycle.

[0068] Cold air transport system

[0069] The exhaust fan 25 starts to draw air from the oil fume passage, and the incoming air is purified through the air inlet filter 24. After the incoming air passes through the heat exchange tube 9, the temperature is reduced to obtain cold air, which is delivered to the user through the air outlet 4.

[0070] like Fig.10 As shown, the control method of the refrigeration type integrated stove based on steam injection refrigeration provided by the embodiment of the present invention includes:

[0071] When cooking starts, the remaining steam in the steam box enters the steam generating chamber to exchange heat with the refrigerant, generating high-temperature and high-pressure refrigerant steam, which is ejected through the ejector 18 to form a low-pressure environment, forcing the refrigerant in the evaporation chamber to vaporize, thereby reducing the refrigerant temperature in the lower part of the evaporation chamber. The induced draft fan starts, and normal temperature air flows through the evaporation chamber sub-box, transferring heat to the condensed water, and reducing the air temperature outside the tube.

[0072] The mixed steam enters the condenser 14 located at the volute through the pipeline, and the heat of the working medium is taken away by the air and cooled into liquid; after cooling, part of the working medium returns to the evaporation chamber through the throttle valve through the micro water pump and part returns to the steam generation chamber to form working medium circulation refrigeration.

[0073] The embodiments of the present invention have achieved some positive effects during the development or use process, and indeed have great advantages over the prior art. The following content is described in conjunction with data, charts, etc. of the experimental process.

[0074] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0075] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any modification, equivalent substitution and improvement made by any technician familiar with the technical field within the technical scope disclosed by the present invention and within the spirit and principle of the present invention should be covered by the protection scope of the present invention.

Claims

1. A refrigeration-type integrated stove based on steam jet refrigeration, characterized in that: The refrigeration-type integrated stove based on steam jet refrigeration comprises: The steam jet refrigeration device is used to absorb the residual steam temperature at the steam box outlet, reduce the ambient temperature, and deliver cold air to the kitchen space to realize the refrigeration function of the integrated stove; The cold air flow device is used to provide power through the induced draft fan and use the air inlet pipe, the air outlet pipe and the air duct to guide the cold air flow; The integrated stove box is used to install the steam jet refrigeration device and the cold air flow device to support the entire device; The integrated stove box includes an integrated stove box body, an integrated stove top, a stove, a steam box, and a fan; An integrated stove top is installed on the integrated stove box body, a stove is installed on the upper end surface of the integrated stove box body, a steam box is embedded in the middle and lower part of the integrated stove box body, and a fan is installed at the lower rear side of the integrated stove box body; The steam jet refrigeration device comprises a steam generating chamber, an ejector, an evaporation chamber, a condenser, a throttle valve, a micro water pump, and a partition; The evaporation chamber is fixed to the partition by screws, and the injector is installed on the partition by screws; The steam generation chamber is placed in a water tank connected to the integrated stove box, and the outlet of the heat exchange tube is connected to the outlet of the water tank; The condenser is located at the volute of the integrated stove, and the micro water pump is fixedly connected to the partition by screws; The evaporation chamber is in a stepped shape as a whole, including an evaporation chamber main box, an evaporation chamber sub-box, and an evaporation chamber pipeline; the evaporation chamber sub-box is rectangular, made of stainless steel, with an air outlet and a gas connecting pipe hole on the upper part, and an air inlet on the lower part of the box; the evaporation chamber pipeline is a serpentine evaporation pipeline, made of aluminum fiber alloy, located inside the evaporation chamber sub-box, and fixedly connected to the box with screws; a steam outlet and a gas connecting pipe hole are opened on the upper part of the evaporation chamber main box, connected to the lower port of the ejector through a steam pipe, and a refrigerant reflux inlet is opened on the lower part; The steam generating chamber is rectangular in shape as a whole, and includes a generating chamber box, a gas connecting pipe and a steam outflow pipe; the generating chamber box is rectangular in shape as a whole, and is made of stainless steel, with a steam outlet at the top connected to the left inlet of the ejector, a refrigerant reflux port at the bottom, a steam inlet and a residual liquid outlet at the side plate, and the residual liquid pipeline is connected to the water tank outlet; The ejector outlet is connected to the condenser, which is in a circular shape and surrounds the volute. A three-way interface is provided, one end of which is connected to the throttle valve to return to the evaporation chamber, and the other end is connected to the micro water pump to return to the steam generation chamber; The micro water pump is a micro centrifugal pump, and the partition is rectangular in shape and made of aluminum alloy.

2. The refrigeration-type integrated stove based on steam jet refrigeration according to claim 1, characterized in that: The integrated stove box body is rectangular in shape, with left and right air outlets on the upper part of the integrated stove box body; the top of the integrated stove is an inverted L-shape as a whole, and the wall is made of stainless steel; the steam box is rectangular in shape as a whole, and the fan is a fan system compatible with the integrated stove.

3. The refrigeration-type integrated stove based on steam jet refrigeration according to claim 1, characterized in that: The cold air flow device comprises an air inlet, an induced draft fan, an air inlet pipe, an air outlet pipe and an air outlet; The air inlet filter is part of the air inlet duct and is placed at the air inlet. The air inlet filter is cylindrical in shape with air inlet holes on the surface. It is made of aluminum alloy and is located at the partition and fixed to the partition with screws. The induced draft fan is a small axial flow fan embedded in the air inlet duct.

4. The refrigeration-type integrated stove based on steam jet refrigeration according to claim 3, characterized in that: The air inlet pipe is L-shaped as a whole and is made of galvanized steel plate. One end is welded and fixed to the partition, and the other end is welded and fixed to the evaporator box. There are two air outlet pipes with a diameter of 40-50 mm. The air outlet pipe is in a double L-shape as a whole and is made of galvanized steel plate. One end of the air outlet pipe is welded and fixed to the auxiliary box of the evaporation chamber, and the other end is welded and fixed to the air duct.

5. The refrigeration-type integrated stove based on steam jet refrigeration according to claim 4, characterized in that: The air duct is cylindrical in shape as a whole, including an air duct box, a temperature probe and an air outlet filter; The air duct box is made of stainless steel and is embedded and installed in the upper part of the integrated stove box body; the air outlet filter is made of aluminum alloy, the size of which is compatible with the air duct box, and is embedded and installed at the air outlet of the air duct box.

6. A control method for implementing the refrigeration-type integrated stove based on steam jet refrigeration according to any one of claims 1 to 5, characterized in that: The control method of the refrigeration type integrated stove based on steam jet refrigeration includes: Step 1: Cooking starts. The residual steam in the steam box enters the steam generating chamber to exchange heat with the refrigerant, generating high-temperature and high-pressure refrigerant steam, which is ejected through the ejector to form a low-pressure environment, forcing the refrigerant in the evaporation chamber to vaporize and reduce the refrigerant temperature in the lower part of the evaporation chamber. Step 2: The induced draft fan is started, and the normal temperature air flows through the auxiliary box of the evaporation chamber, the heat is transferred to the condensed water, and the temperature of the air outside the tube is reduced; Step 3: The medium-temperature and medium-pressure steam obtained by mixing in the ejector enters the condenser located at the volute through a pipeline, and the heat of the refrigerant is taken away by the air and cooled into liquid; Step 4: After cooling, part of the refrigerant returns to the evaporation chamber through the throttle valve via the micro water pump, and the other part returns to the steam generation chamber to form a refrigerant circulation refrigeration.

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