Auxiliary heating equipment combining steam compressor and heat pump

Abstract

The present invention relates to the field of steam compressors, and specifically to an auxiliary heating device that combines a steam compressor with a heat pump. It includes a compressor body and a heat pump body, wherein the compressor body has a compression chamber and a ventilation chamber connected thereto for the main circulation gas to enter and exit, and the heat pump body has a jet enthalpy increase mechanism that cooperates with the compression chamber, and the jet enthalpy increase mechanism includes a jet component for passing high-temperature steam into the compression chamber to mix with the main circulation gas, and an expansion component that can adjust the volume of the compression chamber to provide additional space for the high-temperature steam. The present invention uses the synergistic effect of the annular jet channel and the jet duct to evenly inject high-temperature steam into the compression chamber during the intake stage to fully mix with the main circulation gas, thereby avoiding uneven pressure and optimizing mixing efficiency. As the compression process proceeds, the movable partition dynamically adjusts its position according to the pressure change, and cooperates with the compression spring to achieve flexible expansion of the volume, avoiding sudden pressure increases, and providing stable conditions for heating.

Description

Technical Field

[0001] The invention relates to the field of steam compressors, and in particular to auxiliary heating equipment combining a steam compressor with a heat pump. Background Art

[0002] At present, auxiliary heating equipment combining steam compressors and heat pumps has been widely used in the fields of heating and industrial waste heat recovery. However, the heating capacity of traditional equipment is limited in low temperature environments, and the efficiency of the compressor decreases significantly, making it difficult to meet the heating needs under extreme climate conditions.

[0003] At present, CN115127256B discloses an air source heat pump jet enthalpy increasing auxiliary device, including a compressor, a first connecting pipe, a condenser, a second connecting pipe, a plate exchanger, a third connecting pipe, a fourth connecting pipe, a fifth connecting pipe, a sixth connecting pipe and a steam engine. The top of the plate exchanger is connected to the condenser, and the condenser and the plate exchanger are connected through the second connecting pipe. The lower left part of the plate exchanger is connected to the compressor, the compressor and the condenser are connected through the first connecting pipe, and the compressor and the plate exchanger are connected through the third connecting pipe. The lower left part of the front side of the plate exchanger is connected to the fourth connecting pipe, and the fourth connecting pipe is connected to the plate exchanger. The lower right part of the plate exchanger is connected to the steam engine, the steam engine and the plate exchanger are connected through the fifth connecting pipe, and the steam engine and the compressor are connected through the sixth connecting pipe. Air outlets are provided on the upper and lower sides of the right side of the steam engine, and also include a ventilation component, a prompting mechanism, a protective mechanism and a cleaning mechanism. The third connecting pipe is provided with a ventilation component, and the left side of the plate exchanger is provided with a prompting mechanism for reminding people that the compressor, condenser and steam engine are working. The right side of the steam engine is provided with a protective mechanism for dust prevention, and the protective mechanism is provided with a cleaning mechanism for cleaning dust and impurities.

[0004] According to the above patent, the above patent heats the outside cold air through a steam engine and sends it into the compressor, combines with a high-efficiency plate heat exchanger to achieve heat transfer, and uses an electric expansion valve to accurately control the direction of the airflow to improve the heating efficiency of the air source heat pump. However, during the jet enthalpy increase process, the high-temperature steam and the main circulation gas are unevenly mixed, which can easily lead to local excessive pressure or temperature fluctuations, affecting stability and energy efficiency. In addition, during long-term operation, the compressor will wear out faster due to the additional load, and may even be overloaded or damaged, increasing maintenance costs and failure rates. Therefore, there is a need for an auxiliary heating device that combines a steam compressor with a heat pump that can achieve uniform mixing of high-temperature steam and main circulation gas and reduce the additional load on the compressor. Summary of the invention

[0005] In view of the problems existing in the prior art, an auxiliary heating device of a steam compressor combined with a heat pump is provided. Through the synergistic effect of the annular jet channel and the jet duct, high-temperature steam is evenly injected into the compression chamber during the suction stage and fully mixed with the main circulation gas to avoid uneven pressure and optimize the mixing efficiency. As the compression process proceeds, the movable partition dynamically adjusts its position according to the pressure change, and cooperates with the compression spring to achieve flexible expansion of the volume, avoid sudden pressure increase, and provide stable conditions for heating.

[0006] To solve the problems of the prior art, the present invention provides an auxiliary heating device of a steam compressor combined with a heat pump, comprising a compressor body and a heat pump body, the compressor body having a compression chamber and a ventilation chamber connected thereto for the main circulation gas to enter and exit, the ventilation chamber being composed of an air intake transition zone and an air outlet guide zone, a piston being arranged in the compression chamber, the heat pump body having an injection enthalpy increasing mechanism cooperating with the compression chamber, the injection enthalpy increasing mechanism comprising an injection component for introducing high-temperature steam into the compression chamber for mixing with the main circulation gas and an expansion component capable of adjusting the volume of the compression chamber to provide additional space for the high-temperature steam, the air intake transition zone having a first valve which is opened in the suction stage of the compression chamber and closed in the exhaust stage, and the air outlet guide zone having a second valve which is opened in the exhaust stage of the compression chamber and closed in the suction stage.

[0007] Preferably, the jet assembly comprises an annular jet passage surrounding the compression chamber and communicating therewith, and during the suction stage of the compression chamber, the annular jet passage is in an open state.

[0008] Preferably, a plurality of guide plates are evenly distributed in the annular jet channel along its circumferential direction, each of the guide plates is arranged in an inclined state, and a drainage gap communicating with the annular jet channel is formed between every two adjacent guide plates.

[0009] Preferably, the jet assembly also includes a jet duct arranged on the piston and capable of moving therewith, and the compressor body is provided with a drainage duct sleeved on the jet duct, and the jet duct is provided with a plurality of air holes connected to the compression chamber along its axial direction, and during the suction stage of the compression chamber, the jet duct is in an open state.

[0010] Preferably, the expansion assembly includes a movable partition arranged in the compression chamber, which can move along the movement direction of the piston. The movable partition has an inner sealing ring in sliding contact with the jet duct and an outer sealing ring in contact with the inner wall of the compression chamber. The compression chamber is formed between the movable partition and the piston.

[0011] Preferably, the movable baffle is respectively provided with a tube body connecting the air inlet transition zone and the air outlet guide zone, and the air inlet transition zone and the air outlet guide zone are respectively provided with a tube sleeve for sleeve-mounting the corresponding tube body therein, and a pressure sensing structure is provided between each of the tube sleeves and the movable baffle.

[0012] Preferably, the expansion assembly also includes an adjustment structure capable of adjusting the position of a movable partition to change the volume of the compression chamber. A compression spring is provided between the movable partition and the compressor body. When high-temperature steam is injected into the compression chamber, the volume of the compression chamber gradually expands according to the amount of high-temperature steam introduced. At this time, the compression spring is in a compressed state.

[0013] Preferably, each sleeve has a step at the lower end, and each tube body has an anti-slip portion at the upper end that can cooperate with the corresponding step. When the main circulation gas is sucked into the compression chamber, the compression spring is in a normal state, and the anti-slip portion contacts the step.

[0014] Preferably, the adjustment structure has a support portion arranged above the movable partition, and the support portion can move relative to the movable partition. When the distance of the support portion relative to the movable partition is adjusted from near to far, as high-temperature steam is injected, the compression chamber gradually expands to accommodate more high-temperature steam.

[0015] Preferably, the adjustment structure further comprises a linear drive for driving the support portion to move, and the linear drive is electrically connected to the pressure sensing structure.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention integrates the injection assembly and the expansion assembly in the compressor body to achieve efficient mixing of high-temperature steam and main circulation gas and dynamic adjustment of the compression chamber volume, effectively avoiding the problem of excessive pressure caused by high-temperature steam injection and improving the heating efficiency.

[0018] At the same time, the coordinated work of the first valve and the second valve ensures the unidirectionality of gas flow and avoids the problem of backflow. It effectively increases the evaporation temperature in low temperature environments, allowing the heat pump body to maintain a stable high heating efficiency under cold conditions.

[0019] 2. The present invention opens the annular jet channel when the compression chamber enters the suction stage, so that high-temperature steam is evenly injected into the edge area of ​​the compression chamber through the drainage gap formed by the inclined guide plate to be initially mixed with the main circulation gas, thereby avoiding local pressure unevenness.

[0020] At the same time, the jet duct moves downward with the piston, and its air holes release the high-temperature steam to the central area of ​​the compression chamber in a directional manner to achieve mixing in the central area. The annular jet channel and the jet duct work together to ensure that the high-temperature steam is evenly distributed in the compression chamber, reduce pressure fluctuations, and improve mixing efficiency.

[0021] Subsequently, during the piston compression process, the high-temperature steam is fully mixed with the main circulation gas, providing stable conditions for heating, optimizing the compression process and enhancing the heating effect.

[0022] 3. The present invention cooperates with the movable diaphragm and the compression spring. When high-temperature steam is injected, the movable diaphragm moves away from the piston according to the pressure change, dynamically adjusting the volume of the compression chamber to avoid a sudden increase in pressure. In the suction stage, the compression spring returns to the initial position of the movable diaphragm, forming a dedicated space to introduce the main circulation gas.

[0023] At the same time, the linear drive adjusts the position of the movable partition so that the distance the movable partition can move upward can be adjusted, thereby flexibly changing the size of the compression chamber to adapt to different high-temperature steam input amounts. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of an auxiliary heating device combining a steam compressor with a heat pump according to the present invention.

[0025] Figure 2 It is a three-dimensional structural cross-sectional view of an auxiliary heating device combining a steam compressor with a heat pump according to the present invention.

[0026] Figure 3 It is a partial plan cross-sectional view of the compression chamber suction stage of an auxiliary heating device of a steam compressor combined with a heat pump of the present invention.

[0027] Figure 4 It is a partial plan cross-sectional view of the exhaust stage of the compression chamber of an auxiliary heating device of a steam compressor combined with a heat pump of the present invention.

[0028] Figure 5 It is a partial three-dimensional structural cross-sectional view of the compression chamber suction stage of an auxiliary heating device of a steam compressor combined with a heat pump according to the present invention.

[0029] Figure 6 It is a partial three-dimensional structural cross-sectional view of the compression chamber exhaust stage of an auxiliary heating device of a steam compressor combined with a heat pump of the present invention.

[0030] Figure 7 It is a structural schematic diagram of an injection assembly of an auxiliary heating device of a steam compressor combined with a heat pump according to the present invention.

[0031] Figure 8 The present invention Figure 5 An enlarged schematic diagram of point B.

[0032] Fig. 9 The present invention Figure 5 Enlarged schematic diagram of point C.

[0033] Fig.10 The present invention Figure 6 An enlarged schematic diagram of point D.

[0034] The numbers in the figure are: 1. compressor body; 11. compression chamber; 111. piston; 12. intake transition zone; 121. first valve; 13. outlet guide zone; 131. second valve; 2. jet assembly; 21. annular jet channel; 211. guide plate; 212. drainage gap; 22. jet duct; 221. drainage duct; 222. air hole; 3. expansion assembly; 31. movable partition; 311. inner sealing ring; 312. outer sealing ring; 32. pipe body; 321. pipe sleeve; 3211. step; 3212. anti-slip part; 322. pressure sensing structure; 33. compression spring; 4. adjustment structure; 41. support part; 42. straight drive; 421. first wedge block; 422. second wedge block. DETAILED DESCRIPTION

[0035] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] See also Figure 1-Figure 6 As shown, an auxiliary heating device of a steam compressor combined with a heat pump comprises a compressor body 1 and a heat pump body, wherein the compressor body 1 has a compression chamber 11 and a ventilation chamber connected thereto for the main circulation gas to enter and exit, wherein the ventilation chamber is composed of an air intake transition zone 12 and an air outlet guide zone 13, wherein a piston 111 is arranged in the compression chamber 11, wherein the heat pump body has an injection enthalpy increasing mechanism cooperating with the compression chamber 11, wherein the injection enthalpy increasing mechanism comprises an injection component 2 for passing high-temperature steam into the compression chamber 11 for mixing with the main circulation gas, and an expansion component 3 capable of adjusting the volume of the compression chamber 11 to provide additional space for the high-temperature steam, wherein the air intake transition zone 12 has a first valve 121 which is opened during the suction phase of the compression chamber 11 and is closed during the exhaust phase, and wherein the air outlet guide zone 13 has a second valve 131 which is opened during the exhaust phase of the compression chamber 11 and is closed during the suction phase.

[0037] The heat pump body is not shown in the figure.

[0038] When the compressor body 1 starts to run, the main cycle gas first enters the intake transition zone 12. During this process, the first valve 121 is in an open state, allowing the gas to smoothly flow into the compression chamber 11. At this time, the piston 111 in the compression chamber 11 moves downward to form a negative pressure environment, thereby sucking the main cycle gas into it. This intake stage is ready for the subsequent compression process.

[0039] When the piston 111 starts to move upward, the gas in the compression chamber 11 is gradually compressed, the volume decreases, and the pressure and temperature rise rapidly. At the same time, the jet enthalpy increase mechanism in the heat pump body begins to work. The jet assembly 2 introduces high-temperature steam into the compression chamber 11, mixes it with the main circulation gas, and further increases the temperature and pressure of the mixed gas.

[0040] When the high-temperature steam is introduced into the compression chamber 11, the expansion assembly 3 changes the volume of the compression chamber 11, providing additional space for the high-temperature steam, thereby preventing the compressor body 1 from being damaged due to excessive pressure, thereby enhancing the thermodynamic performance.

[0041] As the gas in the compression chamber 11 completes the compression process, the second valve 131 opens in the gas outlet guide area 13, and the high-pressure and high-temperature mixed gas is discharged into the heat pump body. At this time, the gas carries a large amount of heat energy and enters the heat exchanger for heat release. In the heat exchanger, the high-temperature and high-pressure gas contacts the low-temperature medium and transfers the heat it carries to the target medium, thereby achieving the purpose of heating.

[0042] During the compression process, the first valve 121 is opened only during the inhalation phase of the compression chamber 11 and is closed during the exhaust phase. On the contrary, the second valve 131 is opened only during the exhaust phase and is closed during the inhalation phase, thereby preventing gas backflow and ensuring the unidirectionality of gas flow.

[0043] In addition, the jet enthalpy increase mechanism enables the heat pump body to maintain a high heating efficiency in low temperature environments. By introducing high-temperature steam and mixing it with the main circulation gas, the evaporation temperature is effectively increased, thereby improving the operating performance in low temperature environments.

[0044] See also Figure 2-Figure 6 and Figure 8 As shown, the injection assembly 2 includes an annular injection channel 21 surrounding the compression chamber 11 and communicating therewith. During the suction stage of the compression chamber 11, the annular injection channel 21 is in an open state.

[0045] When the compression chamber 11 enters the suction stage, the annular jet passage 21 is in an open state, ensuring that the high-temperature steam can be evenly distributed and smoothly flow into the compression chamber 11. At this time, as the main circulation gas is sucked into the compression chamber 11, the jet assembly 2 simultaneously injects high-temperature steam into the compression chamber 11 through the annular jet passage 21.

[0046] It not only improves the mixing uniformity of high-temperature steam and main circulation gas, but also effectively avoids the problem of local pressure unevenness, thereby ensuring the stable operation of the entire compression process and the optimization of thermodynamic performance.

[0047] See also Figure 2-Figure 8 As shown, a plurality of guide plates 211 are evenly distributed in the annular jet channel 21 along its circumferential direction, each of the guide plates 211 is arranged in an inclined state, and a drainage gap 212 connecting the annular jet channel 21 is formed between every two adjacent guide plates 211 .

[0048] When high-temperature steam enters the compression chamber 11 through the annular jet channel 21, the drainage gap 212 formed by the plurality of inclined guide plates 211 evenly distributed along the circumferential direction not only connects the annular jet channel 21 and the compression chamber 11, but also can introduce the high-temperature steam into the compression chamber 11 in a directional manner, so that the high-temperature steam injected here is preliminarily mixed with the main circulation gas in the edge area of ​​the compression chamber 11.

[0049] Specifically, the inclined guide plate 211 changes the direction and speed of the high-temperature steam flow, so that it is evenly distributed to different areas of the compression chamber 11 along a preset path, thereby avoiding pressure fluctuations caused by the high-temperature steam directly impacting the main circulation gas. It ensures that the high-temperature steam can be efficiently and stably mixed with the main circulation gas, providing a stable process for subsequent compression heating.

[0050] See also Figure 2-Figure 6 As shown, the jet assembly 2 also includes a jet duct 22 arranged on the piston 111 and capable of moving therewith, and the compressor body 1 is provided with a drainage duct 221 sleeved on the jet duct 22, and the jet duct 22 is provided with a plurality of air holes 222 that can be connected to the compression chamber 11 along its axial direction. During the suction stage of the compression chamber 11, the jet duct 22 is in an open state.

[0051] When the compression chamber 11 enters the suction stage, the jet duct 22 opens as the piston 111 moves downward, and a plurality of air holes 222 distributed along the axial direction thereof begin to communicate with the compression chamber 11. At this time, the jet duct 22 moves precisely driven by the piston 111, and the drainage duct 221 sleeved on the outside thereof plays a role in guiding and stabilizing the airflow.

[0052] As the high-temperature steam is transmitted through the inside of the jet duct 22, it is released into the compression chamber 11 in a uniform and directional manner through the air holes 222. Since the jet duct 22 moves synchronously with the piston 111, the high-temperature steam can be preliminarily mixed with the main circulation gas in the central area of ​​the compression chamber 11. As the piston 111 compresses, it is ensured that the high-temperature steam is fully mixed with the main circulation gas. Combined with the ejection of high-temperature steam by the annular jet channel 21, the problem of uneven pressure caused by the concentrated release of high-temperature steam is effectively avoided, creating the best conditions for gas mixing in the compression chamber 11.

[0053] See also Figure 2-Figure 6 and Fig.10 As shown, the expansion assembly 3 includes a movable partition 31 arranged in the compression chamber 11, and the movable partition 31 can move along the movement direction of the piston 111. The movable partition 31 has an inner sealing ring 311 that is in sliding contact with the injection duct 22 and an outer sealing ring 312 that is in contact with the inner wall of the compression chamber 11. The compression chamber 11 is formed between the movable partition 31 and the piston 111.

[0054] When the movable partition 31 moves along the moving direction of the piston 111, the inner sealing ring 311 thereon maintains sliding contact with the jet duct 22, and at the same time, the outer sealing ring 312 fits tightly with the inner wall of the compression chamber 11 to ensure sealing.

[0055] The area between the movable partition 31 and the piston 111 constitutes a dynamically adjusted compression chamber 11. When the piston 111 compresses the gas upward, the movable partition 31 retreats according to the amount of high-temperature steam introduced, thereby expanding the volume of the compression chamber 11 and providing additional space for the high-temperature steam. This effectively avoids the problem of sudden pressure increase caused by rapid injection of high-temperature steam, making the pressure change in the compression chamber 11 more stable.

[0056] See also Figure 2-Figure 6 and Fig. 9 As shown, the movable partition 31 is respectively provided with a tube body 32 connecting the air intake transition zone 12 and the air outlet guide zone 13, and the air intake transition zone 12 and the air outlet guide zone 13 are respectively provided with a tube sleeve 321 for sleeve-mounting the corresponding tube body 32 therein, and a pressure sensing structure 322 is provided between each of the tube sleeves 321 and the movable partition 31.

[0057] When the movable partition 31 moves in the compression chamber 11, the tube body 32 thereon cooperates with the tube sleeves 321 of the air inlet transition zone 12 and the air outlet guide zone 13 to form a sealed and flexible connection. The pressure sensing structure 322 between each tube sleeve 321 and the movable partition 31 monitors the pressure change of the movable partition 31 in real time when the compression chamber 11 is injected with high-temperature steam.

[0058] In the inhalation stage, the movable diaphragm 31 is detected as a low pressure signal by the pressure sensor, and the first valve 121 is opened to allow the main circulation gas to smoothly enter the compression chamber 11. In the exhaust stage, the movable diaphragm 31 is detected as a high pressure signal by the pressure sensor, prompting the second valve 131 to open and discharge the compressed high-temperature and high-pressure gas. It is beneficial to adjust the volume of the compression chamber 11 formed between the movable diaphragm 31 and the piston 111 according to the pressure on the movable diaphragm 31, so as to control the amount of high-temperature steam introduced.

[0059] See also Figure 2-Figure 6 As shown, the expansion component 3 also includes an adjustment structure 4 that can adjust the position of the movable partition 31 to change the volume of the compression chamber 11. A compression spring 33 is provided between the movable partition 31 and the compressor body 1. When high-temperature steam is injected into the compression chamber 11, the volume of the compression chamber 11 gradually expands according to the amount of high-temperature steam introduced. At this time, the compression spring 33 is in a compressed state.

[0060] When high-temperature steam is injected into the compression chamber 11, in order to control the amount of high-temperature steam introduced, the position of the movable partition 31 after being squeezed by the high-temperature steam is adjusted by adjusting the structure 4, so as to adapt to the amount of high-temperature steam introduced, thereby dynamically changing the volume of the compression chamber 11.

[0061] That is, as the high-temperature steam continues to enter, the pressure generated by it pushes the movable partition 31 to move away from the piston 111, and the compression spring 33 between the movable partition 31 and the compressor body 1 is gradually compressed, so that the compression chamber 11 can be flexibly adjusted in size according to the amount of high-temperature steam entering, providing sufficient space for the high-temperature steam.

[0062] When the piston 111 moves downward, negative pressure is generated in the compression chamber 11, and the compression spring 33 returns to its original position, so that the movable partition 31 returns to its original position. At this time, an initial compression chamber 11 is formed between the movable partition 31 and the piston 111, which is specially used to introduce the main circulation gas.

[0063] See also Figure 2-Figure 6 and Fig. 9 As shown, each sleeve 321 has a step 3211 at the lower end, and each tube body 32 has an anti-slip portion 3212 at the upper end that can cooperate with the corresponding step 3211. When the main circulation gas is sucked into the compression chamber 11, the compression spring 33 is in a normal state, and the anti-slip portion 3212 contacts the step 3211.

[0064] When the main circulation gas is sucked into the compression chamber 11, the compression spring 33 is in a normal state, and the movable partition 31 returns to the initial position under the action of the compression spring 33. In this state, the anti-detachment portion 3212 on each tube body 32 is in close contact with the step 3211 at the lower end of the corresponding tube sleeve 321, forming a stable limit fit. During the main circulation gas inhalation process, the tube body 32 is prevented from detaching from the tube sleeve 321 due to negative pressure, while maintaining sealing.

[0065] See also Figure 2-Figure 7 and Fig.10 As shown, the adjustment structure 4 has a support portion 41 arranged above the movable partition 31, and the support portion 41 can move relative to the movable partition 31. When the distance between the support portion 41 and the movable partition 31 is adjusted from near to far, as high-temperature steam is injected, the compression chamber 11 gradually expands to accommodate more high-temperature steam.

[0066] When the distance between the support portion 41 and the movable partition 31 is adjusted from near to far, the adjustment structure 4 provides a dynamic adjustment capability for the volume change of the compression chamber 11. During the process of high-temperature steam being injected into the compression chamber 11, as the support portion 41 gradually moves away from the movable partition 31, the pressure on the movable partition 31 is redistributed, thereby allowing the volume of the compression chamber 11 to gradually expand to accommodate the entry of more high-temperature steam.

[0067] The position of the movable partition 31 is controlled by the precise movement of the support part 41, ensuring that the compression chamber 11 can be flexibly adjusted according to the amount of high-temperature steam that needs to be introduced. The problem of excessive pressure caused by excessive high-temperature steam introduction is effectively avoided, ensuring the stability and efficiency of the entire heating process.

[0068] See also Figure 2-Figure 7 and Fig.10 As shown, the adjustment structure 4 also has a linear drive for driving the support portion 41 to move, and the linear drive is electrically connected to the pressure sensing structure 322 .

[0069] The linear drive has a first wedge block 421 and a second wedge block 422 that cooperate with each other. Both sides of the support portion 41 have the first wedge block 421 extending horizontally outward. A sliding groove is provided on the compressor body 1 to guide each first wedge block 421 to move up and down, and each first wedge block 421 is matched with a second wedge block 422.

[0070] The first wedge block 421 and the second wedge block 422 both have inclined surfaces that contact each other.

[0071] When the second wedge block 422 moves horizontally relative to the first wedge block 421 , the first wedge block 421 is pushed downward, so that the distance between the support portion 41 and the movable partition plate 31 is reduced, thereby reducing the volume of the high-temperature steam injected into the compression chamber 11 .

[0072] On the contrary, if the volume of the compression chamber 11 needs to be expanded to accommodate more high-temperature steam, the second wedge block 422 moves in the opposite direction, and the distance that the movable partition 31 moves upward increases, thereby expanding the volume of the compression chamber 11. By controlling the distance that the movable partition 31 can move upward, the overall volume of the compression chamber 11 can be controlled.

[0073] During the operation of the compressor body 1, the pressure sensing structure 322 monitors the pressure change in the compression chamber 11 in real time and transmits the signal to the controller, which drives the linear actuator through the controller, thereby driving the support part 41 to move accurately. When the pressure is too high, the linear actuator adjusts the position of the support part 41 to expand the volume of the compression chamber 11 and relieve the pressure. On the contrary, the volume is reduced to improve efficiency.

[0074] The present invention uses the synergistic effect of the annular jet channel 21 and the jet duct 22 to evenly inject high-temperature steam into the edge and center area of ​​the compression chamber 11 during the intake phase to fully mix with the main circulation gas, thereby avoiding uneven pressure and optimizing mixing efficiency.

[0075] During the compression process, the movable partition 31 dynamically adjusts its position according to the pressure change, and cooperates with the compression spring 33 to achieve flexible expansion of the volume, avoid sudden pressure increase, and provide stable conditions for heating. At the same time, the linear drive accurately adjusts the position of the movable partition 31 according to the signal of the pressure sensing structure 322, further optimizes the volume of the compression chamber 11 to adapt to different high-temperature steam input amounts, and improves the heating effect and reliability.

[0076] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the protection scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An auxiliary heating device combining a steam compressor and a heat pump, comprising a compressor body and a heat pump body, wherein the compressor body has a compression chamber and a ventilation chamber connected thereto for the main circulation gas to enter and exit, wherein the ventilation chamber is composed of an air inlet transition zone and an air outlet guide zone, and a piston is arranged in the compression chamber; It is characterized in that The heat pump body has an injection enthalpy increasing mechanism matched with the compression chamber, and the injection enthalpy increasing mechanism includes an injection component for passing high-temperature steam into the compression chamber to mix with the main circulation gas, and an expansion component capable of adjusting the volume of the compression chamber to provide additional space for the high-temperature steam; The intake transition zone has a first valve which is opened during the suction phase of the compression chamber and closed during the exhaust phase; The air outlet guide area has a second valve which is opened during the exhaust phase of the compression chamber and closed during the intake phase; The expansion assembly includes a movable partition plate arranged in the compression chamber, the movable partition plate can move along the movement direction of the piston, the movable partition plate has an inner sealing ring in sliding contact with the jet conduit and an outer sealing ring in contact with the inner wall of the compression chamber, and the compression chamber is formed between the movable partition plate and the piston; The movable baffle is provided with a tube body connected to the air inlet transition zone and the air outlet guide zone, respectively, and the air inlet transition zone and the air outlet guide zone are respectively provided with a tube sleeve for sleeve-mounting the corresponding tube body therein, and a pressure sensing structure is provided between each of the tube sleeves and the movable baffle; The expansion component also includes an adjustment structure that can adjust the position of the movable partition to change the volume of the compression chamber. A compression spring is provided between the movable partition and the compressor body. When high-temperature steam is injected into the compression chamber, the volume of the compression chamber gradually expands according to the amount of high-temperature steam introduced. At this time, the compression spring is in a compressed state.

2. The auxiliary heating device of a steam compressor combined with a heat pump according to claim 1, characterized in that: The jet assembly comprises an annular jet passage which surrounds the compression chamber and is in communication with the compression chamber. During the suction stage of the compression chamber, the annular jet passage is in an open state.

3. The auxiliary heating device of a steam compressor combined with a heat pump according to claim 2, characterized in that: A plurality of guide plates are evenly distributed in the annular jet channel along its circumferential direction, each of the guide plates is arranged in an inclined state, and a drainage gap communicating with the annular jet channel is formed between every two adjacent guide plates.

4. The auxiliary heating device of a steam compressor combined with a heat pump according to claim 2, characterized in that: The jet assembly also includes a jet duct arranged on the piston and capable of moving with the piston. The compressor body is provided with a drainage duct sleeved on the jet duct. The jet duct is provided with a plurality of air holes connected to the compression chamber along its axial direction. During the suction stage of the compression chamber, the jet duct is in an open state.

5. The auxiliary heating device of a steam compressor combined with a heat pump according to claim 1, characterized in that: Each sleeve has a step at the lower end, and each tube has an anti-slip portion at the upper end that can cooperate with the corresponding step. When the main circulation gas is sucked into the compression chamber, the compression spring is in a normal state, and the anti-slip portion contacts the step.

6. The auxiliary heating device of a steam compressor combined with a heat pump according to claim 1, characterized in that: The adjustment structure has a support portion arranged above the movable partition, and the support portion can move relative to the movable partition. When the distance of the support portion relative to the movable partition is adjusted from near to far, as high-temperature steam is injected, the compression chamber gradually expands to accommodate more high-temperature steam.

7. The auxiliary heating device of a steam compressor combined with a heat pump according to claim 6, characterized in that: The adjustment structure also has a linear drive for driving the support part to move, and the linear drive is electrically connected to the pressure sensing structure.

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