A heat pump type water vapor generating system
By using a cascade system design and a specialized air evaporator defrosting system, the problems of low energy efficiency of electrically heated steam and performance degradation under low-temperature conditions have been solved, enabling efficient and continuous production of steam and ice.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-10
AI Technical Summary
In existing technologies, the steam generated by electric heating has low energy efficiency. Heat pump steam generators cannot effectively utilize refrigerant and their performance degrades in low-temperature environments. The interruption of steam output during defrosting affects production.
The system employs a cascade system design, including a shell and a jet-enhanced heating system. Through this cascade system design, combined with a compressor and heat exchanger, it achieves efficient production of water vapor and ice. Equipped with a dedicated air evaporator defrosting system and optimized defrosting control program, it enables continuous production of efficient water vapor and ice.
This improves the overall efficiency of the steam generator, ensures normal operation in low-temperature environments, avoids interruption of steam production during defrosting, and achieves continuous steam output.
Smart Images
Figure CN224479617U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the fields of refrigeration and heat pump heating, and in particular to a heat pump type steam generation system. Background Technology
[0002] For users who cannot use natural gas or coal-fired boilers to produce steam, most of the steam they use is generated by electric heating. This method is simple in structure but has an energy efficiency of up to 1:1, resulting in a large waste of electricity.
[0003] Currently, some users who use heat pump type steam generators to produce steam do not recover the cooling capacity, and instead directly release it into the atmosphere, resulting in a waste of cooling capacity.
[0004] Moreover, existing heat pump steam generators require defrosting after running for a period of time, and their performance deteriorates as the ambient temperature decreases. Defrosting interrupts the output of steam, which has a significant impact on production. Summary of the Invention
[0005] The purpose of this invention is to address the shortcomings of existing technologies and provide a heat pump type steam generation system.
[0006] To achieve the above objectives, this utility model is implemented according to the following technical solution:
[0007] A heat pump type steam generation system includes a housing, within which an ice-making chamber and an evaporator are located. The housing also contains a first heat exchange tank, a second heat exchange tank, a first compressor, and a second compressor. The first heat exchange tank is connected to a water source inlet located on one side of the housing, and the water source inlet is connected to a water source. The top of the first heat exchange tank is connected to a steam inlet located on one side of the housing. The first heat exchange tank contains a first heat exchange tube, and the second heat exchange tank contains a second, a third, and a fourth heat exchange tube. One end of the first heat exchange tube is connected to the outlet of the first compressor, and the other end is connected to one end of the third heat exchange tube. An electronic expansion valve connects the first and third heat exchange tubes. The third heat exchange tube is connected to the inlet of compressor one at one end; the second heat exchange tube is connected to the outlet of compressor two at one end, and the inlet of compressor two is connected to both the outlet of the ice-making chamber and the outlet of the evaporator. The inlet of the evaporator and the inlet of the ice-making chamber are both connected to the outlet end of the second heat exchange tube. A solenoid valve and a thermal expansion valve are connected between the second heat exchange tube and the evaporator. A solenoid valve and a thermal expansion valve are also connected between the second heat exchange tube and the ice-making chamber. The inlet end of the fourth heat exchange tube is connected to the defrosting pipe outlet of the evaporator. The outlet end is connected to the defrosting system via a pipe and then connected to the defrosting pipe inlet end of the evaporator. A water collection tank is provided at the bottom of the evaporator, and a drain outlet is provided at the bottom of the water collection tank.
[0008] Furthermore, the defrosting system includes a buffer container and a circulating pump connected in sequence to the outlet end of the fourth heat exchange tube, the outlet end of the circulating pump being connected to the inlet end of the defrosting pipe of the evaporator; a ventilation hole is opened at the top of the shell of the evaporator, and a fan of the evaporator is installed in the ventilation hole.
[0009] Preferably, the shell is a stainless steel shell, the first heat exchange tank is a stainless steel tank, and the second heat exchange tank is a carbon steel tank.
[0010] Compared with the prior art, the present invention has the following beneficial effects:
[0011] This invention utilizes a high-efficiency, energy-saving compressor for refrigeration, absorbing heat from the environment or water, and raising the temperature through a cascade system to produce water vapor and ice. It further enhances system efficiency through vapor injection enthalpy enhancement, achieving dual functionality in one unit and overall efficiency exceeding that of traditional heat pump-type water vapor generators.
[0012] This invention utilizes a specialized air evaporator defrosting system, enabling the equipment to operate normally even at low ambient temperatures, thus meeting process requirements.
[0013] This invention optimizes the evaporator defrosting control program, making steam production a continuous process, avoiding the interruption of steam production during defrosting in traditional heat pumps, and ensuring the continuity of steam use. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model.
[0015] Figure 2 This is a schematic diagram of the internal structure of this utility model.
[0016] Figure 3 This is a diagram of the internal circulation of this utility model. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. The specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the utility model.
[0018] like Figures 1-3The illustrated heat pump type steam generation system includes a housing 6, which is made of stainless steel. Inside the housing 6 are an ice-making chamber 1 and an evaporator 5. The housing 6 also contains a heat exchange tank 1 (2), a heat exchange tank 2 (3), a compressor 1 (11), and a compressor 2 (12). The heat exchange tank 1 (2) is connected to a water source inlet 8 located on one side of the housing 6, and the water source inlet 8 is connected to a water source. The top of the heat exchange tank 1 (2) is connected to a steam inlet 9 located on one side of the housing 6. The heat exchange tank 1 (2) contains a first heat exchange tube 13. The heat exchange tank 2 (3) contains a second heat exchange tube 14, a third heat exchange tube 15, and a fourth heat exchange tube 16. One end of the first heat exchange tube 13 is connected to the outlet of the compressor 11, and the other end is connected to one end of the third heat exchange tube 15. An electrical connection is provided between the first heat exchange tube 13 and the third heat exchange tube 15. The expansion valve 20 and the third heat exchange tube 15 are connected at one end to the inlet of the compressor 11; one end of the second heat exchange tube 14 is connected to the outlet of the compressor 2 12, the inlet of the compressor 2 12 is connected to the outlet of the ice chamber 1 and the outlet of the evaporator 5, the inlet of the evaporator 5 and the inlet of the ice chamber 1 are connected to the outlet end of the second heat exchange tube 14, a solenoid valve 18 and a thermal expansion valve 19 are connected between the second heat exchange tube 14 and the evaporator 5, and a solenoid valve 18 and a thermal expansion valve 19 are also connected between the second heat exchange tube 14 and the ice chamber 1; the inlet end of the fourth heat exchange tube 16 is connected to the defrost pipe outlet of the evaporator 5, and the outlet end is connected to the defrost system 7 through a pipe and then connected to the defrost pipe inlet end of the evaporator 5; a water collection tank 17 is provided at the bottom of the evaporator 5, and a drain outlet 10 is provided at the bottom of the water collection tank.
[0019] Specifically, the defrosting system 7 includes a buffer container and a circulating pump connected in sequence to the outlet end of the fourth heat exchange tube 16. The buffer container and the circulating pump circulate heat transfer oil. The outlet end of the circulating pump is connected to the inlet end of the defrosting pipe of the evaporator 5. A ventilation hole is opened at the top of the shell 6 at the top of the evaporator 5, and the fan 4 of the evaporator is installed in the ventilation hole.
[0020] Reference Figure 1 , Figure 2 and Figure 3 The process for generating high-temperature steam using this embodiment is as follows:
[0021] The compressor 12 starts working first, absorbing heat from the water or air in the ice-making chamber 1 or evaporator 5. The heat is then transferred out through heat exchange tube 14 in heat exchange tank 2. The heat is transferred to heat exchange tube 15 in the liquid medium. After absorbing heat, the internal medium of heat exchange tube 15 becomes gas and is compressed by compressor 11 into high-temperature gas. The high-temperature gas heats water in heat exchange tank 1. The water is heated to over 100°C and then turns into steam for use.
[0022] The technical solution of this utility model is not limited to the specific embodiments described above. All technical modifications made based on the technical solution of this utility model shall fall within the protection scope of this utility model.
Claims
1. A heat pump type steam generation system, comprising a housing (6), wherein an ice-making chamber (1) and an evaporator (5) are provided inside the housing (6), characterized in that: The housing (6) contains a heat exchange tank 1 (2), a heat exchange tank 2 (3), a compressor 1 (11), and a compressor 2 (12). The heat exchange tank 1 (2) is connected to a water source interface (8) located on one side of the housing (6), and the water source interface (8) is connected to a water source. The top of the heat exchange tank 1 (2) is connected to a steam interface (9) located on one side of the housing (6). The heat exchange tank 1 (2) contains a first heat exchange tube (13). The heat exchange tank 2 (3) contains a second heat exchange tube (14), a third heat exchange tube (15), and a fourth heat exchange tube (16). One end of the first heat exchange tube (13) is connected to the outlet of the compressor 1 (11), and the other end is connected to one end of the third heat exchange tube (15). An electronic expansion valve (20) is connected between the first heat exchange tube (13) and the third heat exchange tube (15). The other end of the third heat exchange tube (15) is connected to the compressor 1. (11) The inlet of the second heat exchange tube (14) is connected to the outlet of the second compressor (12) at one end. The inlet of the second compressor (12) is connected to the outlet of the ice chamber (1) and the outlet of the evaporator (5). The inlet of the evaporator (5) and the inlet of the ice chamber (1) are connected to the outlet of the second heat exchange tube (14). A solenoid valve (18) and a thermal expansion valve (19) are connected between the second heat exchange tube (14) and the evaporator (5). A solenoid valve (18) and a thermal expansion valve (19) are also connected between the second heat exchange tube (14) and the ice chamber (1). The inlet of the fourth heat exchange tube (16) is connected to the defrost pipe outlet of the evaporator (5). The outlet is connected to the defrost system (7) through a pipe and then connected to the defrost pipe inlet of the evaporator (5). A water collection tank (17) is provided at the bottom of the evaporator (5). A drain outlet (10) is provided at the bottom of the water collection tank.
2. The heat pump type steam generation system according to claim 1, characterized in that: The defrosting system includes a buffer container and a circulating pump connected in sequence to the outlet end of the fourth heat exchange tube (16). The outlet end of the circulating pump is connected to the inlet end of the defrosting pipe of the evaporator (5). A ventilation hole is opened at the top of the shell (6) at the top of the evaporator (5), and the fan (4) of the evaporator is installed in the ventilation hole.
3. The heat pump type steam generation system according to claim 1, characterized in that: The shell (6) is a stainless steel shell, the heat exchange tank one (2) is a stainless steel tank, and the heat exchange tank two (3) is a carbon steel tank.