Steam generator and air conditioner

Abstract

The utility model provides a steam generator and an air conditioner. The steam generator comprises an outer shell, a first separating structure and a second separating structure, wherein the outer shell is divided into a refrigerant inlet and outlet area and a steam generating cavity by the first separating structure, and the refrigerant inlet and outlet area is divided into a refrigerant inflow cavity and a refrigerant outflow cavity by the second separating structure; the refrigerant input pipe and the refrigerant output pipe are arranged on the outer shell and communicate with the refrigerant inflow cavity and the refrigerant outflow cavity; the gas-liquid separation device is arranged in the steam generation cavity and comprises a device shell, and a gas-liquid separation cavity communicated with the steam generation cavity is formed in the device shell; the liquid inlet pipe penetrates through the outer shell and the device shell and is communicated with the gas-liquid separation cavity; the first heat exchange pipe penetrates through the first separation structure, the steam generation cavity and the gas-liquid separation cavity and is communicated with the refrigerant inflow cavity and the refrigerant outflow cavity, and a flowing refrigerant exchanges heat with a water body which is introduced into the gas-liquid separation cavity from a liquid inlet pipe; and the second heat exchange pipe penetrates through the first separation structure and the steam generation cavity and is communicated with the refrigerant inflow cavity and the refrigerant outflow cavity, and the refrigerant exchanges heat with the water body falling into the steam generation cavity to generate steam.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to a steam generator and an air conditioner using the same. Background Technology

[0002] Horizontal tube flooded evaporators, as traditional large-capacity evaporators, are widely used in air conditioning, heat pump heating, and chemical industries due to their low cost and high stability. During operation, the liquid to be evaporated fills the space inside the shell outside the heat exchange tubes. The heat released by the fluid inside the heat exchange tubes is conducted to the liquid outside the tubes through the tube walls and fins, causing a phase change in the liquid. After boiling and heat exchange, the generated gas is discharged from the top of the evaporator.

[0003] Due to the characteristics of horizontal tube evaporators filled with liquid, they can also be used as steam generators. In this case, the space inside the shell outside the heat exchange tubes is filled with boiling water, and a heat transfer fluid or refrigerant flows through the tubes. The heat transfer fluid heats the water, turning it into high-temperature steam. However, during the heat exchange process in the steam generator, a large amount of dissolved oxygen is released from the water. This released oxygen corrodes the inner structure of the heat exchanger shell (especially at the welded joints), affecting the corrosion resistance, safety, and service life of the steam generator.

[0004] Therefore, how to separate water from its dissolved oxygen before it turns into high-temperature steam, so as to avoid the precipitation of dissolved oxygen in the water and corrosion of the steam generator shell during subsequent heat exchange, is a technical problem that urgently needs to be solved in this field.

[0005] Existing gas-liquid separation technologies for water and its dissolved oxygen are mainly divided into chemical and physical methods. Physical methods include distillation and membrane separation, while chemical methods include redox reaction deoxygenation. However, these methods cannot efficiently utilize the heat from the refrigerant in existing heat exchangers to promote rapid dissolved oxygen release, and they suffer from high costs and resource waste, resulting in their limited application in steam generators. Utility Model Content

[0006] This utility model proposes a steam generator and an air conditioner using the same, in order to solve the technical problem of excessive dissolved oxygen precipitation in water during the heat exchange process of existing steam generators, which causes corrosion of the heat exchanger shell.

[0007] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0008] This utility model provides a steam generator, including: an outer shell, and further including:

[0009] The first partition structure divides the internal space of the outer shell into a refrigerant inlet / outlet area and a steam generation chamber.

[0010] The second partition structure divides the refrigerant inlet / outlet area into a refrigerant inlet cavity and a refrigerant outlet cavity;

[0011] The refrigerant inlet pipe and refrigerant outlet pipe are located in the outer casing and are respectively connected to the refrigerant inlet cavity and the refrigerant outlet cavity;

[0012] A gas-liquid separation device, located inside a steam generating chamber, includes: a device housing, which forms a gas-liquid separation chamber communicating with the steam generating chamber; and a liquid inlet pipe that passes through the outer housing and the device housing and communicates with the gas-liquid separation chamber.

[0013] The first heat exchange tube passes through the first partition structure, the steam generation chamber, and the gas-liquid separation chamber, and connects to the refrigerant inlet chamber and the refrigerant outlet chamber. It is used to exchange heat and deoxygenate the refrigerant flowing through it with the water entering the gas-liquid separation chamber from the liquid inlet pipe. Several second heat exchange tubes pass through the first partition structure and the steam generation chamber, and connect to the refrigerant inlet chamber and the refrigerant outlet chamber. They are used to exchange heat and generate water vapor by exchanging heat between the refrigerant flowing through them and the water that falls into the steam generation chamber after deoxygenation.

[0014] Furthermore, the device housing includes an inlet pipe housing and a water turbine housing connected vertically, and the gas-liquid separation chamber includes an inlet chamber and a water turbine chamber formed inside the inlet pipe housing and the water turbine housing respectively and connected to each other, with the inlet pipe connected to the inlet chamber;

[0015] The gas-liquid separation device also includes a mechanism located inside the water turbine cavity, wherein the water turbine assembly can rotate under the impact of the water flow entering the water turbine cavity through the inlet pipe and the inlet cavity, so as to spray water onto the first heat exchange tube inside the water turbine cavity.

[0016] Furthermore, the device housing also includes a transition tube shell connected to the bottom end of the turbine tube shell. The inner diameter of the transition tube shell gradually narrows from the top end of the transition tube shell connected to the turbine tube shell to the bottom end of the transition tube shell facing away from the turbine tube shell. The gas-liquid separation chamber also includes a contraction chamber formed inside the transition tube shell and connected to the turbine chamber.

[0017] Furthermore, the device housing also includes a connecting tube shell connected to the bottom end of the transition tube shell, and the gas-liquid separation chamber also includes a connecting cavity formed inside the connecting tube shell and connected to the contraction cavity. The inner wall of the connecting tube shell is evenly spaced with multiple turbulence protrusions along its circumference.

[0018] Furthermore, the device housing also includes a liquid outlet pipe shell connected to the bottom end of the connecting pipe shell. The inner diameter of the liquid outlet pipe shell gradually expands from the top end of the connecting pipe shell to the bottom end of the liquid outlet pipe shell facing away from the connecting pipe shell. The gas-liquid separation chamber also includes a liquid outlet chamber formed inside the transition pipe shell and connected to the connecting chamber. The bottom end of the liquid outlet pipe shell facing away from the connecting pipe shell is provided with a lower liquid equalization plate that connects the liquid outlet chamber and the steam generation chamber.

[0019] The device housing also includes a liquid outlet pipe shell connected to the bottom end of the connecting pipe shell. From the top end of the liquid outlet pipe shell connected to the connecting pipe shell to the bottom end of the liquid outlet pipe shell facing away from the connecting pipe shell, its inner diameter gradually expands.

[0020] Furthermore, the device housing also includes:

[0021] The upper liquid equalization plate is located at the top of the liquid inlet pipe shell facing away from the water turbine pipe shell, and connects the liquid inlet chamber and the steam generation chamber.

[0022] Furthermore, the steam generator also includes:

[0023] The exhaust pipe is located on the outer casing and connects to the steam generating chamber.

[0024] Furthermore, the steam generator also includes:

[0025] The third partition structure is arranged opposite to the first partition structure. One side of the third partition structure, together with the first partition structure and the outer shell, forms a steam generating chamber. The other side of the third partition structure relative to the steam generating chamber, together with the outer shell, forms a refrigerant transition chamber.

[0026] One part of the second heat exchange tube passes through the first partition structure, the steam generation chamber and the third partition structure and connects to the refrigerant inflow chamber and the refrigerant transition chamber, while the other part of the second heat exchange tube passes through the first partition structure, the steam generation chamber and the third partition structure and connects to the refrigerant outflow chamber and the refrigerant transition chamber.

[0027] Preferably, the first heat exchange tube comprises:

[0028] The refrigerant inflow section passes through the first partition structure, and its two ends extend to the refrigerant inflow cavity and the upper side of the device housing, respectively.

[0029] The refrigerant outlet section passes through the first partition structure, and its two ends extend to the refrigerant outlet cavity and the lower side of the device housing, respectively.

[0030] The refrigerant heat exchange section passes through the gas-liquid separation chamber and connects the refrigerant inflow section located on the upper side of the device casing and the refrigerant outflow section located on the lower side of the device casing.

[0031] Preferably, multiple heat exchange fins are evenly spaced along the axial direction on the periphery of the refrigerant heat exchange section.

[0032] Furthermore, the first heat exchange tube also includes:

[0033] The refrigerant distribution section is connected to the end of the refrigerant inflow section located on the upper side of the device casing;

[0034] The refrigerant manifold is connected to the end of the refrigerant outlet section located on the lower side of the device casing;

[0035] At least two refrigerant heat exchange sections are arranged side by side, and each refrigerant heat exchange section is connected to the refrigerant branch section and the refrigerant confluence section at intervals.

[0036] This utility model also provides an air conditioner, including a heat exchanger, which includes the steam generator described above.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The steam generator provided by this utility model adds a gas-liquid separation device above the heat exchange tube bundle (several second heat exchange tubes) in the steam generation chamber of the steam generator. Water is introduced into the gas-liquid separation chamber inside the gas-liquid separation device through the outer shell of the steam generator. At the same time, a first heat exchange tube is added that passes through the steam generation chamber and the gas-liquid separation chamber and connects the refrigerant inlet chamber and the refrigerant outlet chamber. The high-temperature refrigerant flowing through the first heat exchange tube exchanges heat with the water in the gas-liquid separation chamber, thereby heating the water and raising its temperature. This reduces the solubility of oxygen in the water, causing oxygen to precipitate from the water and be discharged from the gas outlet pipe at the top of the outer shell. Therefore, it reduces the contact between oxygen and the welded joints on the inner side of the outer shell, avoids oxidation and corrosion of these easily corroded parts, effectively reduces the maintenance cost of the steam generator, and improves the corrosion resistance, safety and service life of the steam generator.

[0039] Furthermore, this steam generator utilizes a portion of the high-temperature gaseous refrigerant within the heat exchange tubes and its own heat to preheat the water body and achieve thermal deoxygenation before the water becomes high-temperature steam. It also boasts a simple structure, achieving the separation of water from its dissolved oxygen in an environmentally friendly, efficient, and energy-saving manner. Simultaneously, the steam generator's heat exchange tubes feature various structural layouts, as do the heat dissipation fins on the tubes. The heat exchange tubes and gas-liquid separation device can also be equipped with various liquid equalization structures and equalization holes to further enhance the heat exchange area and efficiency. Attached Figure Description

[0040] To more clearly illustrate the technical solution proposed by this utility model, the present utility model will be described in detail below with reference to the embodiments and accompanying drawings. It should be understood that the embodiments and accompanying drawings described in the following detailed description are merely some embodiments of this utility model, and those skilled in the art can make changes to these drawings under the concept of this utility model.

[0041] Figure 1 A front view structural schematic diagram of an embodiment of the steam generator provided by this utility model;

[0042] Figure 2 for Figure 1 A three-dimensional structural diagram of the gas-liquid separation device and the first heat exchange tube of the steam generator in the middle;

[0043] Figure 3 for Figure 2 A three-dimensional structural schematic diagram of one embodiment of the first heat exchange tube in the process;

[0044] Figure 4 for Figure 3 A side view of the first heat exchange tube in the structure;

[0045] Figure 5 A side view of an embodiment of the steam generator provided by this utility model;

[0046] Figure 6 for Figure 5 A side view of the gas-liquid separation device in the steam generator;

[0047] Figure 7 A three-dimensional structural schematic diagram of an embodiment of the water turbine shell of the steam generator provided by this utility model;

[0048] Figure 8 A three-dimensional structural schematic diagram of an embodiment of the transition tube shell, connecting tube shell, and liquid outlet tube shell of the steam generator provided by this utility model;

[0049] Figure 9 for Figure 2 A three-dimensional structural diagram of the first heat exchange tube in the process;

[0050] Figure 10 A three-dimensional structural schematic diagram of another embodiment of the first heat exchange tube provided by this utility model;

[0051] Figure 11 for Figure 10 A schematic diagram of the main structure of the first heat exchange tube in the middle;

[0052] Figure 12 for Figure 10 A top view of the first heat exchange tube in the structure.

[0053] The main markings in the attached figures are as follows:

[0054] 1. Outer shell; 11. Refrigerant inlet pipe; 12. Refrigerant outlet pipe; 13. Gas outlet pipe; 2. First partition structure; 3. Refrigerant inlet / outlet area; 31. Refrigerant inlet chamber; 32. Refrigerant outlet chamber; 33. Second partition structure; 4. Steam generation chamber; 5. Refrigerant transition chamber; 6. Gas-liquid separator; 61. Device shell; 611. Liquid inlet pipe shell; 6111. Upper liquid distribution plate; 612. Water turbine pipe shell; 613. Transition pipe shell; 614. Connecting pipe shell; 6141. Turbulence protrusion; 615. Liquid outlet pipe shell; 6151. Lower liquid distribution plate. 62. Liquid plate; 621. Gas-liquid separation chamber; 622. Liquid inlet chamber; 623. Water turbine chamber; 624. Contraction chamber; 625. Connecting chamber; 626. Liquid outlet chamber; 63. Liquid inlet pipe; 64. Water turbine mechanism; 641. Water turbine assembly; 642. Mounting shaft; 7. First heat exchange tube; 71. Refrigerant inlet section; 72. Refrigerant outlet section; 73. Refrigerant heat exchange section; 731. Heat exchange fins; 732. Liquid equalization tank; 7321. Central liquid equalization hole; 74. Refrigerant diversion section; 75. Refrigerant confluence section; 8. Second heat exchange tube; 9. Third partition structure. Detailed Implementation

[0055] Please refer to the following: Figure 1-12 The steam generator provided by this utility model includes: an outer shell, and further includes:

[0056] The first partition structure 2 divides the internal space of the outer shell 1 into a refrigerant inlet / outlet area 3 and a steam generating chamber 4; the second partition structure 33 divides the refrigerant inlet / outlet area 3 into a refrigerant inlet chamber 31 and a refrigerant outlet chamber 32; the refrigerant inlet pipe 11 and the refrigerant outlet pipe 12 are provided on the outer shell 1 and are respectively connected to the refrigerant inlet chamber 31 and the refrigerant outlet chamber 32.

[0057] The gas-liquid separation device 6 is disposed in the steam generating chamber 4 and includes: a device housing 61, which forms a gas-liquid separation chamber 62 that communicates with the steam generating chamber 4; and a liquid inlet pipe 63 that passes through the outer housing 1 and the device housing 61 and communicates with the gas-liquid separation chamber 62.

[0058] The first heat exchange tube 7 passes through the first partition structure 2 and the gas-liquid separation chamber 62 and connects the refrigerant inflow chamber 31 and the refrigerant outflow chamber 32. It is used to exchange heat between the refrigerant flowing through it and the water that is introduced into the gas-liquid separation chamber 62 from the liquid inlet pipe 63, thereby achieving thermal deoxygenation.

[0059] Several second heat exchange tubes 8 pass through the first partition structure 2 and the steam generating chamber 4 and connect the refrigerant inflow chamber 31 and the refrigerant outflow chamber 32, and are used to exchange heat between the refrigerant flowing through them and the water that has been deoxygenated and falls into the steam generating chamber 4 to generate steam.

[0060] The steam generator provided by this utility model adds a gas-liquid separation device 6 above the heat exchange tube bundle (several second heat exchange tubes 8) in the steam generating chamber 4 of the steam generator. Water is introduced into the gas-liquid separation chamber 62 inside the gas-liquid separation device 6 through the outer shell 1 of the steam generator. At the same time, a first heat exchange tube 7 is added, passing through the steam generating chamber 4 and the gas-liquid separation chamber 62 and connecting the refrigerant inflow chamber 31 and the refrigerant outflow chamber 32. The high-temperature refrigerant flowing through the first heat exchange tube 7 exchanges heat with the water in the gas-liquid separation chamber 62, thereby heating the water and increasing its temperature. This reduces the solubility of oxygen in the water, causing oxygen to be released from the water and concentrated to be discharged from the gas outlet pipe 13 at the top of the outer shell 1. Therefore, the contact between oxygen and the welded joint on the inner side of the outer shell 1 is reduced, avoiding oxidation and corrosion of this easily corroded part. This effectively reduces the maintenance cost of the steam generator and improves the corrosion resistance, safety and service life of the steam generator.

[0061] Meanwhile, the steam generator has the advantage of simple structure, which further reduces its maintenance and manufacturing costs.

[0062] In addition, the steam generator provided by this utility model also utilizes part of the heat of the high-temperature gaseous refrigerant in the heat exchange tube to preheat the water body and achieve thermal deoxygenation before the water becomes high-temperature steam. Compared with traditional physical and chemical deoxygenation methods, this steam generator achieves the separation of water body from dissolved oxygen in an environmentally friendly, efficient and energy-saving way.

[0063] Please refer to the following: Figure 1-7 In this embodiment, the device housing 61 includes an inlet pipe housing 611 and a water turbine housing 612 connected vertically. The gas-liquid separation chamber 62 includes an inlet chamber 621 and a water turbine chamber 622 formed inside the inlet pipe housing 611 and the water turbine housing 612 respectively and connected to each other. The inlet pipe 63 is connected to the inlet chamber 621.

[0064] The gas-liquid separation device 6 also includes:

[0065] The water turbine mechanism 64 is located inside the water turbine cavity 622. The water turbine assembly 641 of the water turbine mechanism 64 can rotate under the impact of the water flow entering the water turbine cavity 622 through the liquid inlet pipe 63 and the liquid inlet cavity 621, so as to spray water into the first heat exchange tube 7 inside the water turbine cavity 622, thereby increasing the heat exchange area and heat exchange efficiency between the water and the first heat exchange tube 7.

[0066] Please refer to the following: Figure 5-7 In a preferred embodiment of this invention, the turbine mechanism 64 includes:

[0067] The mounting shaft 642 is located inside the turbine cavity 622 and connected to the inside of the turbine tube shell 612; the turbine assembly 641 is rotatably mounted on the mounting shaft 642 via a bearing (not shown in the figure).

[0068] Please refer to the following: Figure 1-8 In this embodiment, the device housing 61 also includes a transition housing 613 connected to the bottom end of the water turbine housing 612. The inner diameter of the transition housing 613 gradually narrows from the top end of the water turbine housing 612 to the bottom end of the transition housing 613 facing away from the water turbine housing 612. That is, the inner diameter of the transition housing 613 at the top end of the water turbine housing 612 is larger than the inner diameter of the bottom end of the transition housing 613 facing away from the water turbine housing 612. The gas-liquid separation chamber 62 also includes a gradually narrowing contraction chamber 623 formed inside the transition housing 613 and connected to the water turbine chamber 622.

[0069] As the cross-sectional area of ​​the contraction chamber 623 pipe decreases, the water flow speed increases and the flow becomes more vigorous, further increasing the heat exchange area and heat exchange efficiency between the water and the first heat exchange tube 7.

[0070] Please refer to the following: Figure 1-8 In a preferred embodiment of this invention, the transition shell 613 and the contraction cavity 623 are conical.

[0071] Please refer to the following: Figure 1-8 In this embodiment, the device housing 61 further includes a connecting housing 614 connected to the bottom end of the transition housing 613, and the gas-liquid separation chamber 62 further includes a connecting cavity 624 formed inside the connecting housing 614 and connected to the contraction cavity 623. The inner wall of the connecting housing 614 is evenly distributed with a plurality of turbulence protrusions 6141 along its circumference.

[0072] After the water flows into the connecting cavity 624 at a high speed, some of the water flows back due to the obstruction of the turbulence protrusion 6141. The backflowing water can further improve the heat exchange time, area, efficiency and heating rate with the first heat exchange tube 7. Some of the water continues to flow violently under the action of the turbulence protrusion 6141.

[0073] Please see Figure 8 In a preferred embodiment of this invention, the turbulence protrusion 6141 is rectangular or hemispherical.

[0074] Please refer to the following: Figure 1-8In this embodiment, the device housing 61 also includes a liquid outlet housing 615 connected to the bottom end of the connecting housing 614. The inner diameter of the liquid outlet housing 615 gradually expands from the top end of the connecting housing 614 to the bottom end of the liquid outlet housing 615 facing away from the connecting housing 614. That is, the inner diameter of the liquid outlet housing 615 at the top end of the connecting housing 614 is smaller than the inner diameter of the bottom end of the liquid outlet housing 615 facing away from the water turbine housing 612. The gas-liquid separation chamber 62 also includes a liquid outlet chamber 625 formed inside the transition housing 613 and connected to the connecting chamber 624. The bottom end of the liquid outlet housing 615 facing away from the connecting housing 614 is provided with a lower liquid equalization plate 6151 that connects the liquid outlet chamber 625 and the steam generation chamber 4. The lower liquid equalization plate 6151 has a plurality of lower liquid equalization holes (not shown in the figure) evenly spaced.

[0075] When the water flows through the outlet chamber 625, the water flow velocity slows down, which increases the heat exchange time between the water and the first heat exchange tube 7. Finally, under the action of the lower equalizing plate 6151, the water is evenly sprayed into the steam generating chamber 4, and undergoes secondary heat exchange with multiple second heat exchange tubes 8 in the steam generating chamber 4, which further heats the water from the liquid state to the high-temperature vapor state of water vapor, and finally discharges from the steam generator through the steam outlet pipe 13.

[0076] Please refer to the following: Figure 1-8 In a preferred embodiment of this invention, the liquid outlet shell 615 and the liquid outlet cavity 625 are conical.

[0077] Please refer to the following: Figure 1-8 In this embodiment, the liquid inlet pipe shell 611, water turbine pipe shell 612, transition pipe shell 613, connecting pipe shell 614 and connecting pipe shell 614 are coaxially arranged and arranged in order from top to bottom, and are formed by bending and welding square sheet metal parts, so that the device shell 61 is a symmetrical rotating body with its axis as the center of rotation.

[0078] Please refer to the following: Figure 1-8 In this embodiment, the device housing 61 further includes:

[0079] The upper liquid equalization plate 6111 is located at the top of the liquid inlet pipe shell 611 facing away from the water turbine pipe shell 612, and connects the liquid inlet chamber 621 and the steam generation chamber 4. The upper liquid equalization plate 6111 has multiple upper liquid equalization holes (not shown in the figure) evenly spaced, which are used to block the liquid discharged upward with the gas-liquid separator 6 to a certain extent, thereby reducing the liquid carried in the exhaust.

[0080] Please refer to the following: Figure 1-5 In this embodiment, the steam generator further includes:

[0081] The exhaust pipe 13 is located on the outer shell 1 and connected to the steam generating chamber 4. It is used to concentrate the oxygen that escapes from the lower liquid equalization plate 6151 from the above-mentioned liquid outlet chamber 625 (gas-liquid separation chamber 62) and the high-temperature water vapor generated in the area where the second heat exchange tube 8 is arranged below the steam generating chamber 4 and discharge it from the top of the outer shell 1, so as to prevent the oxygen that is released from the water from contacting and corroding the inner side (inner wall) of the outer shell 1.

[0082] Please refer to the following: Figure 1-5 In this embodiment, the steam generator further includes:

[0083] The third partition structure 9 is disposed opposite to the first partition structure 2. One side of the third partition structure 9, together with the first partition structure 2 and the outer shell 1, forms the steam generating chamber 4. The other side of the third partition structure 9 opposite to the steam generating chamber 4, together with the outer shell 1, forms the refrigerant transition chamber 5.

[0084] Multiple second heat exchange tubes 8 constitute a heat exchange tube bundle. Among them, a portion of the second heat exchange tubes 8 (located on the upper half of the heat exchange tube bundle) passes through the first partition structure 2, the steam generation chamber 4, and the third partition structure 9 and connects the refrigerant inflow chamber 31 and the refrigerant transition chamber 5. Another portion of the second heat exchange tubes 8 (located on the lower half of the heat exchange tube bundle) passes through the first partition structure 2, the steam generation chamber 4, and the third partition structure 9 and connects the refrigerant outflow chamber 32 and the refrigerant transition chamber 5. Thus, the refrigerant flow between the refrigerant inflow chamber 31 and the refrigerant outflow chamber 32 is realized through the connection and transition of the two portions of the second heat exchange tubes 8 and the refrigerant transition chamber 5.

[0085] Please refer to the following: Figure 1-5 In a preferred embodiment of this invention, the first partition structure 2, the second partition structure 33, and the third partition structure 9 are all partition plates. The periphery of the first partition structure 2 and the third partition structure 9 protrudes outward from the outer shell 1, and the bottom ends of the first partition structure 2 and the third partition structure 9 are supported on the ground or a fixed object.

[0086] Please refer to the following: Figure 1-5 9. In this embodiment, the first heat exchange tube 7 includes:

[0087] The refrigerant inflow section 71 passes through the first partition structure 2, and its two ends extend to the refrigerant inflow cavity 31 and the upper side of the device housing 61, respectively; the refrigerant outflow section 72 passes through the first partition structure 2, and its two ends extend to the refrigerant outflow cavity 32 and the lower side of the device housing 61, respectively; the refrigerant heat exchange section 73 passes through the gas-liquid separation cavity 62, and its two ends connect to the end of the refrigerant inflow section 71 located on the upper side of the device housing 61 and the end of the refrigerant outflow section 72 located on the lower side of the device housing 61, respectively.

[0088] Please refer to the following: Figure 1-59. As a preferred embodiment of this example, the refrigerant inflow section 71 and the refrigerant outflow section 72 are arranged vertically and horizontally, the refrigerant heat exchange section 73 is arranged vertically (up and down), and the second heat exchange tube 8 is arranged horizontally.

[0089] As a preferred embodiment of this example, multiple first heat exchange tubes 7 are arranged side by side at intervals to improve the heat exchange efficiency of the first heat exchange tubes 7 to the water.

[0090] Please refer to the following: Figure 1-5 9. As a preferred embodiment of this example, multiple heat exchange fins 731 are evenly distributed at intervals along the axial direction of the refrigerant heat exchange section 73 around the periphery of the refrigerant heat exchange section 73.

[0091] Please refer to the following: Figure 1-5 9. As a preferred embodiment of this invention, the heat exchange fins 731 are hexagonal. Multiple sets of hexagonal heat exchange fins 731 are evenly spaced along the axial direction of the refrigerant heat exchange section 73. Each set of hexagonal heat exchange fins 731 includes multiple hexagonal heat exchange fins 731 evenly spaced along the axial direction of the refrigerant heat exchange section 73. Since there is an inclination angle between different sides of the hexagonal heat exchange fins 731, the flow path of the fluid (refrigerant) can be changed under the guidance of the hexagonal heat exchange fins 731. Furthermore, the water flow along the angled sides can prolong the water flow path during the heat exchange process, thereby prolonging the heat exchange time between the water and the high-temperature gaseous refrigerant, thereby increasing the rate of water temperature rise. This causes the solubility of oxygen in the rapidly heated water to decrease rapidly, allowing the dissolved oxygen in the water to be rapidly and efficiently released and removed, avoiding contact with the welded area inside the outer shell 1.

[0092] Please refer to the following: Figure 3-4 As a preferred embodiment, multiple heat exchange fins 731 are evenly distributed along the axial direction of the refrigerant inflow section 71 and the refrigerant outflow section 72 on the periphery of the refrigerant inflow section 71 and the refrigerant outflow section 72, respectively, to further improve the heat exchange efficiency of the first heat exchange tube 7 to the water in the steam generation chamber 4.

[0093] Please refer to the following: Figure 10-11 In one embodiment of this invention, the first heat exchange tube 7 further includes:

[0094] A refrigerant branch section 74 is connected to the end of the refrigerant inflow section 71 located on the upper side of the device housing 61; a refrigerant confluence section 75 is connected to the end of the refrigerant outflow section 72 located on the lower side of the device housing 61. At least two refrigerant heat exchange sections 73 are arranged side by side, and each refrigerant heat exchange section 73 is connected to the refrigerant branch section 74 and the refrigerant confluence section 75 at intervals.

[0095] Please refer to the following: Figure 10-11In a preferred embodiment of this invention, a plurality of liquid equalization tanks 732 are evenly spaced along the axial direction of the refrigerant heat exchange section 73. A plurality of preferably circular central liquid equalization holes 7321 are evenly spaced around the bottom wall of the liquid equalization tanks 732 surrounding the refrigerant heat exchange section 73. Arranging at least two refrigerant heat exchange sections 73 side-by-side with the first heat exchange tube 7 and adding multiple stages of liquid equalization tanks 732 to the refrigerant heat exchange section 73 can increase the number of heat exchange tube branches and the heat exchange area, thereby further improving the heat exchange efficiency of the first heat exchange tube 7 for the water in the steam generation chamber 4.

[0096] This utility model also provides an air conditioner (not shown in the figure), including a heat exchanger, a refrigerant pipeline (not shown in the figure) circulating through the heat exchanger, and a water supply device (not shown in the figure). The heat exchanger includes the aforementioned steam generator. The refrigerant pipeline (not shown in the figure) is connected to the refrigerant input pipe 11 and the refrigerant output pipe 12. The water supply device is connected to the liquid inlet pipe 63 and is used to provide water to the gas-liquid separation chamber 62 as a steam generation source.

[0097] The working process and principle of the steam generator of this utility model are as follows:

[0098] S1: The refrigerant pipeline of the air conditioning system inputs high-temperature gaseous refrigerant from the refrigerant inlet of the refrigerant inlet pipe 11 into the refrigerant inflow chamber 31 on one side of the outer casing 1. One path of the high-temperature gaseous refrigerant entering the refrigerant inflow chamber 31 flows through several second heat exchange tubes 8 that pass through the first partition structure 2 and the steam generation chamber 4 and connect the refrigerant inflow chamber 31 and the refrigerant outflow chamber 32. The other path of the high-temperature gaseous refrigerant flows through the first heat exchange tube 7 that passes through the first partition structure 2 and the gas-liquid separation chamber 62 and connects the refrigerant inflow chamber 31 and the refrigerant outflow chamber 32. After the two paths of high-temperature gaseous refrigerant converge in the refrigerant outflow chamber 32, they exit from the refrigerant outlet of the refrigerant outlet pipe 12 and enter the refrigerant pipeline for circulation.

[0099] S2: The water supply device introduces water from the inlet of the inlet pipe 63 into the inlet pipe shell 611 at the top of the housing 61 of the gas-liquid separator 6 and into the inlet chamber 621 at the top of the gas-liquid separation chamber 62; at the same time, the upper liquid equalization plate 6111 at the top of the inlet pipe shell 611 blocks the liquid from being discharged upward with the gas, reducing the amount of liquid carried in the exhaust.

[0100] S3: The water entering the inlet chamber 621 flows from top to bottom under the action of gravity, and flows down from the inlet chamber 621 into the water turbine shell 612 at the lower end of the inlet pipe shell 611 and the water turbine chamber 622 at the lower end of the inlet chamber 621.

[0101] When the water flows downward and impacts the water turbine assembly 641 in the water turbine cavity 622, the lift force is greater than the resistance due to the gravity of the water, causing the water turbine assembly 641 to rotate around the mounting shaft 642 via the bearing. The rotation of the water turbine assembly 641 drives the water body to move centrifugally, causing the water body to flow in a rotating spray state in the water turbine cavity 622. This increases the heat exchange area and heat exchange efficiency between the water body and the heat exchange fins 731 of the first heat exchange tube 7, thereby increasing the heating rate of the water body. This causes the solubility of oxygen in the water to decrease rapidly and to be quickly released during the rotation of the water turbine assembly 641. This achieves efficient thermal deoxygenation of the steam generator and removes and discharges most of the dissolved oxygen before the water body comes into contact with the welded joint on the inner side of the outer shell 1 of the steam generating cavity 4, avoiding a large amount of oxygen from contacting and corroding the structure.

[0102] S4: Under the action of the rotating water turbine assembly 641, the water is sprayed in a rotating manner in the water turbine cavity 622, and then flows downward from the water turbine cavity 622 into the transition tube shell 613 at the lower end of the water turbine tube shell 612 and the contraction cavity 623 at the lower end of the water turbine cavity 622. As the cross-sectional area of ​​the pipe in the contraction cavity 623 is reduced, the water flow velocity increases and the flow becomes more vigorous, further improving the heat exchange area and efficiency between the water and the first heat exchange tube 7, as well as the water heating rate and thermal deoxygenation rate;

[0103] S5: After the water flow is accelerated through the contraction chamber 623, it flows downward from the contraction chamber 623 into the connecting chamber 614 at the lower end of the transition tube shell 613 and into the connecting chamber 624 at the lower end of the contraction chamber 623. At this time, the water flows into the connecting chamber 624 at a higher speed. Under the obstruction of the multiple turbulence protrusions 6141 distributed on the inner wall of the connecting tube shell 614, part of the water flows back, which can further improve the heat exchange time, area, efficiency, heating rate, and deoxygenation efficiency between the water and the first heat exchange tube 7; while part of the water continues to flow more violently under the action of the turbulence protrusions 6141, which further improves the heat exchange area, efficiency, heating rate, and deoxygenation efficiency between the water and the first heat exchange tube 7.

[0104] S6: After the water flows through the connecting cavity 624 and is turbulent, it flows downward from the connecting cavity 624 to the inside of the outlet pipe shell 615 at the lower end of the connecting pipe shell 614, and then to the outlet cavity 625 at the lower end of the connecting cavity 624. Due to the increased cross-sectional area of ​​the outlet cavity 625, the water flow velocity is slowed down, further increasing the heat exchange time and heating rate between the water and the first heat exchange tube 7, as well as the deoxygenation efficiency, so that more residual dissolved oxygen is released from the water.

[0105] S7: Finally, under the action of the lower equalization plate 6151, the water is evenly sprayed into the steam generating chamber 4 below the gas-liquid separator 6. The water flowing through the gas-liquid separation chamber 62 of the gas-liquid separator 6 exchanges heat once with one path of high-temperature refrigerant flowing through the first heat exchange tube 7. Then, it exchanges heat a second time (again) with another path of high-temperature refrigerant flowing through multiple second heat exchange tubes 8 in the steam generating chamber 4. This causes the water to finally evaporate from a liquid state to a gas state, and finally generate high-temperature steam, which is discharged from the steam generator through the steam outlet pipe 13 at the top of the steam generating chamber 4.

[0106] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Those skilled in the art should understand that any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A steam generator comprising: The outer casing (1) is characterized in that it further comprises: The first partition structure (2) divides the internal space of the outer shell (1) into a refrigerant inlet / outlet area (3) and a steam generating chamber (4); The second partition structure (33) divides the refrigerant inlet / outlet area (3) into a refrigerant inlet cavity (31) and a refrigerant outlet cavity (32); A refrigerant inlet pipe (11) and a refrigerant outlet pipe (12) are provided on the outer casing (1) and are respectively connected to the refrigerant inlet cavity (31) and the refrigerant outlet cavity (32); A gas-liquid separation device (6) is disposed in a steam generating chamber (4) and includes: a device housing (61) which forms a gas-liquid separation chamber (62) that communicates with the steam generating chamber (4); and a liquid inlet pipe (63) that passes through the outer shell (1) and the device housing (61) and communicates with the gas-liquid separation chamber (62). The first heat exchange tube (7) passes through the first partition structure (2), the steam generating chamber (4) and the gas-liquid separation chamber (62) and connects the refrigerant inlet chamber (31) and the refrigerant outlet chamber (32) for exchanging heat and deoxygenating the refrigerant flowing through it with the water that enters the gas-liquid separation chamber (62) from the liquid inlet pipe (63); Several second heat exchange tubes (8) pass through the first partition structure (2) and the steam generating chamber (4) and connect the refrigerant inflow chamber (31) and the refrigerant outflow chamber (32) to exchange heat between the refrigerant flowing through them and the water that has been deoxygenated and falls into the steam generating chamber (4) to generate steam.

2. The steam generator of claim 1, wherein The device housing (61) includes an inlet pipe housing (611) and a water turbine housing (612) connected vertically. The gas-liquid separation chamber (62) includes an inlet chamber (621) and a water turbine chamber (622) formed inside the inlet pipe housing (611) and the water turbine housing (612) respectively and communicating with each other. The inlet pipe (63) is connected to the inlet chamber (621). The gas-liquid separation device (6) also includes: The water turbine mechanism (64) is located in the water turbine cavity (622). Its water turbine assembly (641) can rotate under the impact of the water flow entering the water turbine cavity (622) through the liquid inlet pipe (63) and the liquid inlet cavity (621) to spray water onto the first heat exchange tube (7) in the water turbine cavity (622).

3. The steam generator of claim 2, wherein The device housing (61) also includes a transition housing (613) connected to the bottom end of the turbine housing (612). The inner diameter of the transition housing (613) gradually decreases from the top end of the turbine housing (612) to the bottom end of the transition housing (613) facing away from the turbine housing (612). The gas-liquid separation chamber (62) also includes a contraction chamber (623) formed inside the transition housing (613) and connected to the turbine chamber (622).

4. The steam generator of claim 3, wherein The device housing (61) further includes a connecting housing (614) connected to the bottom end of the transition housing (613), and the gas-liquid separation chamber (62) further includes a connecting chamber (624) formed inside the connecting housing (614) and connected to the contraction chamber (623). The inner wall of the connecting housing (614) is evenly distributed with a plurality of turbulence protrusions (6141) along its circumference.

5. The steam generator of claim 4, wherein The device housing (61) also includes a liquid outlet housing (615) connected to the bottom end of the connecting housing (614). The inner diameter of the liquid outlet housing (615) gradually expands from the top end of the connecting housing (614) to the bottom end of the liquid outlet housing (615) facing away from the connecting housing (614). The gas-liquid separation chamber (62) also includes a gradually widening liquid outlet chamber (625) formed inside the transition housing (613) and connected to the connecting chamber (624). The bottom end of the liquid outlet housing (615) facing away from the connecting housing (614) is provided with a lower liquid equalization plate (6151) that connects the liquid outlet chamber (625) and the steam generation chamber (4).

6. The steam generator of claim 2, wherein The device housing (61) also includes: The upper liquid leveling plate (6111) is located at the top of the liquid inlet pipe shell (611) facing away from the water turbine pipe shell (612), and connects the liquid inlet chamber (621) and the steam generating chamber (4).

7. The steam generator according to any one of claims 1 to 6, wherein Also includes: An exhaust pipe (13) is provided on the outer shell (1) and connected to the steam generating chamber (4).

8. The steam generator according to any one of claims 1 to 6, wherein Also includes: The third partition structure (9) is arranged opposite to the first partition structure (2). One side of the third partition structure (9) together with the first partition structure (2) and the outer shell (1) forms the steam generating chamber (4). The other side of the third partition structure (9) opposite to the steam generating chamber (4) together with the outer shell (1) forms the refrigerant transition chamber (5). One part of the second heat exchange tube (8) passes through the first partition structure (2), the steam generating chamber (4) and the third partition structure (9) and connects the refrigerant inflow chamber (31) and the refrigerant transition chamber (5), while another part of the second heat exchange tube (8) passes through the first partition structure (2), the steam generating chamber (4) and the third partition structure (9) and connects the refrigerant outflow chamber (32) and the refrigerant transition chamber (5).

9. The steam generator according to any one of claims 1 to 6, wherein The first heat exchange tube (7) includes: The refrigerant inflow section (71) passes through the first partition structure (2) and its two ends extend to the refrigerant inflow cavity (31) and the upper side of the device housing (61), respectively; The refrigerant outlet section (72) passes through the first partition structure (2), and its two ends extend to the refrigerant outlet cavity (32) and the lower side of the device housing (61), respectively; The refrigerant heat exchange section (73) passes through the gas-liquid separation chamber (62) and connects the end of the refrigerant inflow section (71) located on the upper side of the device housing (61) and the end of the refrigerant outflow section (72) located on the lower side of the device housing (61).

10. The steam generator of claim 9, wherein The refrigerant heat exchange section (73) has multiple heat exchange fins (731) evenly spaced along its axial direction on its periphery.

11. The steam generator of claim 9, wherein The first heat exchange tube (7) also includes: The refrigerant diversion section (74) is connected to one end of the refrigerant inflow section (71) located on the upper side of the device housing (61); The refrigerant manifold (75) is connected to one end of the refrigerant outlet section (72) located on the lower side of the device housing (61); At least two refrigerant heat exchange sections (73) are arranged side by side, and each refrigerant heat exchange section (73) is connected to the refrigerant branch section (74) and the refrigerant confluence section (75) at intervals.

12. An air conditioner comprising a heat exchanger, characterized by The heat exchanger includes a steam generator as described in any one of claims 1-11.

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