A heat pump unit using a novel ejector component and a control method thereof

Abstract

The present invention relates to the field of new energy technology, specifically to a heat pump unit using a new type of ejector component and a control method thereof, including a compressor, a condenser, a regenerator, an evaporator, a gas-liquid separator and a four-way reversing valve. Through the innovative configuration of the ejector, the ejector effectively utilizes the energy of the low-pressure evaporator, enhances the refrigerant flow and pressure through the ejection effect of the low-pressure gas, reduces the burden on the compressor, improves the overall energy efficiency of the heat pump unit, and optimizes the energy efficiency of the system under different working conditions. The four-way reversing valve flexibly switches between the heating mode and the cooling mode. The system quickly switches the working modes of the compressor, condenser, evaporator and other components by controlling the flow direction of the four-way reversing valve to achieve optimal operation under different working conditions. The regenerator ensures that the recovered heat energy can be effectively transferred to the evaporator or other required components. Under low load conditions, the regenerator can provide additional energy support to reduce the energy consumption of the system.

Description

Technical Field

[0001] The present invention relates to the field of new energy technology, and in particular to a heat pump unit using a novel ejector component and a control method thereof. Background Art

[0002] For the current single-stage cycle heat pump system, due to the limitations of the compressor compression ratio and operating range, the unit is placed in an environment with a temperature below -30℃ and operates at a low evaporation temperature. The unit's capacity and energy efficiency are low, and the condensing temperature is low, which cannot meet the user's usage requirements. Especially in the scenario where the user needs to use radiant heat dissipation using radiators, the effect will be worse; it is impossible to expand the unit's operating range and improve its capacity and energy efficiency at low temperatures;

[0003] A similar solution to solve the above problems is to use a CO2 system. The throttling device uses an ejector component, but the problem is that the pressure required for the whole machine is high, and the cost of the compressor, heat exchanger, ejector, etc. doubles due to the need to increase the pressure resistance, and the popularity is low; or a two-stage compression system solution requires two high-pressure and low-pressure compressors to achieve a high pressure ratio, but the cost is also doubled compared to the single-stage compression cost, which is too expensive. Summary of the invention

[0004] In view of the deficiencies in the prior art and to solve the problems raised in the above background technology, the present invention provides a heat pump unit and a control method thereof which achieves low-cost, high-energy-efficiency operation at low evaporation temperatures through a specific control method and which does not require a two-stage system or CO2 pure high-pressure refrigerant and uses a new type of ejector component.

[0005] A heat pump unit using a novel ejector component and a control method thereof, comprising a compressor, a condenser, a regenerator, an evaporator, a gas-liquid separator and a four-way reversing valve, wherein the four-way reversing valve comprises a C port, a D port, an E port and an S port, wherein a liquid outlet of the compressor is connected to a D port of the four-way reversing valve, a C port of the four-way reversing valve is connected to an inlet of the condenser, a condenser outlet is connected to a H port of the regenerator, a first pipeline and a second pipeline are connected in parallel to a K port of the regenerator, the other end of the first pipeline is connected to a liquid inlet of the evaporator, and the other end of the second pipeline is connected to a The first pipeline is provided with a third solenoid valve, an ejector, a check valve and a second solenoid valve in sequence from the regenerator to the evaporator. The ejector includes a low-pressure inlet, a high-pressure outlet and an ejection port. The low-pressure inlet is connected to the third solenoid valve, the high-pressure outlet is connected to the check valve, and the ejection port is connected to the evaporator outlet. The ejector effectively utilizes the energy of the low-pressure evaporator, increases the refrigerant flow and pressure through the ejection of low-pressure gas, reduces the burden on the compressor, and improves the overall energy efficiency of the heat pump unit. The energy efficiency of the system is optimized under different working conditions.

[0006] The first pipeline between the one-way valve and the second solenoid valve is connected with a third pipeline, which is connected to the E port of the four-way reversing valve, the S port of the four-way reversing valve is connected to the air inlet of the gas-liquid separator, the gas outlet of the gas-liquid separator is connected to the M port of the regenerator, and the N port of the regenerator is connected to the liquid return port of the compressor; the four-way reversing valve can be flexibly switched between the heating mode and the cooling mode. By controlling the flow direction of the four-way reversing valve, the system can quickly switch the working modes of the compressor, condenser, evaporator and other components to achieve the best operation under different working conditions. The regenerator ensures that the recovered heat energy can be effectively transferred to the evaporator or other required components. Under low load conditions, the regenerator can provide additional energy support to reduce the energy consumption of the system.

[0007] The liquid outlet of the gas-liquid separator is connected to the liquid inlet of the evaporator. Through the innovative configuration of the ejector, the system energy efficiency is improved, the operation mode is optimized, the system safety is improved, the service life of the equipment is extended, and the heat in the environment is greatly converted into the system.

[0008] As a further solution of the present invention, the ejector includes a three-way pipe, a low-pressure inlet and a high-pressure outlet are respectively arranged at both ends of the three-way pipe, the ejection port is arranged in the vertical direction of the three-way pipe, the diameter of the intermediate tube body between the low-pressure inlet and the high-pressure outlet is smaller than the diameter of the tube ports at both ends, the space in the intermediate tube body forms a mixing chamber, and the inner wall of the intermediate tube body is provided with a slope baffle inclined toward the high-pressure outlet, the slope baffle forms an inclination angle of 30°-50° with the axial direction, the slope baffle reduces the flow area of ​​the refrigerant in the tube to increase the flow velocity for pressure expansion, and the flow area reaches 70-300mm 2 , the circulation speed reaches 7.5-40m / s, the high pressure outlet side of the mixing chamber forms a diffusion chamber, and the ejector port is set on the output side of the ramp baffle. The middle tube of the ejector is provided with a ramp baffle, which has a simple structure and is easy to form, and can effectively achieve the effect of increasing the refrigerant flow rate by controlling the flow area.

[0009] As a further solution of the present invention, a first solenoid valve is provided on the second pipeline, a first electronic expansion valve is provided on the pipeline between the condenser outlet and the H port of the regenerator, and a second electronic expansion valve is provided on the pipeline between the liquid outlet of the gas-liquid separator and the liquid inlet of the evaporator.

[0010] As a further solution of the present invention, a refrigerant is circulated in the heat pump unit, and the refrigerant includes 9.5% by mass of CO2 and 90.5% by mass of R32 refrigerant. The refrigerant maintains a relatively high evaporation pressure under low evaporation temperature, so that the compressor operates in a high energy efficiency range, but the unit does not need components with high pressure bearing capacity.

[0011] As a further solution of the present invention, a control method of a heat pump unit using a novel ejector component is provided, using a heat pump unit using the novel ejector component, the heat pump unit including a heating mode and a cooling / defrosting mode;

[0012] Heating mode: The compressor starts, and the refrigerant enters through the D port of the four-way reversing valve, flows to the condenser along the C port of the four-way reversing valve, forms a high-pressure liquid refrigerant, enters the regenerator through the first electronic expansion valve, and exchanges heat with the low-temperature gaseous refrigerant of the return compressor to form a low-temperature and high-pressure liquid refrigerant. The third solenoid valve is opened and the first solenoid valve is closed at the same time. The low-temperature and high-pressure liquid refrigerant passes through the third solenoid valve and enters along the low-pressure inlet of the ejector in turn. The liquid is pressurized and accelerated by the ramp block of the ejector to form a high-pressure and high-speed injection liquid refrigerant. After the one-way valve, it enters the E port of the four-way reversing valve and then enters the gas-liquid separator. The gas-liquid separator separates the gas in the liquid refrigerant and then enters the regenerator along the M port of the regenerator. After exchanging heat with the high-pressure liquid refrigerant in the regenerator, it flows back to the compressor from the N port of the regenerator.

[0013] The second solenoid valve is closed, and the liquid in the gas-liquid separator enters the evaporator for heat exchange through the second electronic expansion valve, forming a gaseous refrigerant that is sucked in by the ejector port, circulates along the high-pressure outlet of the ejector and enters the gas-liquid separator again for secondary gas-liquid separation. The liquid refrigerant separated from the gas-liquid separator enters the evaporator for heat exchange. After the high-pressure liquid refrigerant generated by the compressor enters the condenser, it undergoes the heat exchange process of the electronic expansion valve and the regenerator to maximize energy recovery and improve the overall thermal efficiency of the system. The slope baffle of the ejector rapidly increases the pressure and speed of the low-temperature and high-pressure liquid refrigerant, forming a high-speed injection of liquid refrigerant, which effectively enhances the heat transfer capacity of the system, reduces the burden on the compressor, and improves the heating efficiency.

[0014] As a further solution of the present invention, the refrigeration / defrosting mode: when there is a refrigeration demand, the third solenoid valve and the second electronic expansion valve are closed, the compressor is started, and after a delay of 90s-110s, the refrigerant flows in through the D port of the four-way reversing valve and flows out through the E port of the four-way reversing valve in sequence, and then enters the evaporator through the second solenoid valve for heat exchange, flows into the K port of the regenerator through the first solenoid valve and enters the regenerator, flows out through the H port of the regenerator after heat exchange in the regenerator, enters the condenser after throttling through the second electronic expansion valve, and enters the gas-liquid separator along the C port of the four-way reversing valve and the S port of the four-way reversing valve. The gaseous refrigerant after gas-liquid separation in the gas-liquid separator enters the regenerator along the M port of the regenerator for heat exchange, and the refrigerant after heat exchange flows back to the compressor through the N port of the regenerator for circulation. The compressor delayed start system operates stably at startup, avoids the impact of instantaneous pressure fluctuations on the system, and improves the stability and efficiency of the system. By switching between port D and port E of the four-way reversing valve, the refrigerant flows accurately and at high speed to each component, achieving efficient heat management.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the heat pump unit includes a compressor, a condenser, a regenerator, an evaporator, a gas-liquid separator and a four-way reversing valve. Through the innovative configuration of the ejector, the ejector effectively utilizes the energy of the low-pressure evaporator, and enhances the refrigerant flow and pressure through the ejection effect of the low-pressure gas, reduces the burden on the compressor, improves the overall energy efficiency of the heat pump unit, and optimizes the energy efficiency of the system under different working conditions. The four-way reversing valve flexibly switches between the heating mode and the cooling mode. The system quickly switches the working modes of the compressor, condenser, evaporator and other components by controlling the flow direction of the four-way reversing valve to achieve optimal operation under different working conditions. The regenerator ensures that the recovered heat energy can be effectively transferred to the evaporator or other required components. Under low load conditions, the regenerator can provide additional energy support to reduce the energy consumption of the system.

[0016] The inner space of the middle tube body of the ejector forms a mixing chamber, and the inner wall of the middle tube body is provided with a slope baffle inclined toward the high-pressure outlet direction. The structure is simple and easy to form, and can effectively achieve the effect of increasing the refrigerant flow rate by controlling the flow area.

[0017] The heat pump unit is equipped with a refrigerant circulating in the unit, which includes 9.5% by mass of CO2 and 90.5% by mass of R32 refrigerant. The refrigerant maintains a relatively high evaporation pressure at a low evaporation temperature, allowing the compressor to operate in a high energy efficiency range, but the unit does not require components with high pressure bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the system principle of the present invention;

[0019] Figure 2 A schematic diagram of the control logic of the winter heating mode of the present invention;

[0020] Figure 3 A schematic diagram of the control logic of the summer cooling mode of the present invention;

[0021] Figure 4 This is a control logic diagram of the summer cooling mode of the present invention.

[0022] In the figure: 1-evaporator, 2-second pipeline, 201-first solenoid valve, 3-first pipeline, 301-third solenoid valve, 302-ejector, 321-low-pressure inlet, 322-intermediate tube, 323-mixing chamber, 324-ejector port, 325-diffusion chamber, 326-high-pressure outlet, 327-slope blocker, 303-check valve, 304-second solenoid valve, 4-first electronic expansion valve, 5-condenser, 6-third pipeline, 7-four-way reversing valve, 8-compressor, 9-regenerator, 10-gas-liquid separator, 11-second electronic expansion valve. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] The serial numbers of the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0025] In the present invention, unless otherwise clearly specified and limited, a first feature is “on” a second feature.

[0026] "Below" means that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, "above", "above" and "above" the first feature of the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "below" and "below" the first feature of the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] Example 1

[0028] like Figure 1 and Figure 4 As shown, a heat pump unit using a new type of ejector component includes a compressor 8, a condenser 5, a regenerator 9, an evaporator 1, a gas-liquid separator 10 and a four-way reversing valve 7. The four-way reversing valve 7 includes a C port, a D port, an E port and an S port. The liquid outlet of the compressor is connected to the D port of the four-way reversing valve, the C port of the four-way reversing valve is connected to the condenser inlet, the condenser outlet is connected to the H port of the regenerator, and a first electronic expansion valve 4 is arranged on the pipeline between the condenser outlet and the H port of the regenerator. The K port of the regenerator is provided with a first pipeline 3 and a second pipeline 2 in parallel, the other end of the first pipeline 3 is connected to the liquid inlet of the evaporator, and the other end of the second pipeline 2 is connected to the liquid outlet of the evaporator, and the second pipeline 2 is provided with a first solenoid valve 201.

[0029] The first pipeline 3 is provided with a third solenoid valve 301, an ejector 302, a check valve 303 and a second solenoid valve 304 in sequence from the regenerator to the evaporator. The ejector 302 includes a low-pressure inlet 321, a high-pressure outlet 326 and an ejection port 324. The low-pressure inlet 321 is connected to the third solenoid valve 301, the high-pressure outlet 326 is connected to the check valve 303, and the ejection port is connected to the liquid outlet of the evaporator; the ejector includes a three-way pipe, and the low-pressure inlet 321 and the high-pressure outlet 326 are respectively arranged at both ends of the three-way pipe. The injection port 324 is arranged in the vertical direction of the three-way pipe. The diameter of the intermediate tube body between the low-pressure inlet 321 and the high-pressure outlet 326 is smaller than the diameter of the tube ports at both ends. The space inside the intermediate tube body 322 forms a mixing chamber 323. The inner wall of the intermediate tube body is provided with a slope baffle 327 inclined toward the high-pressure outlet. The slope baffle forms an inclination angle of 40° with the axial direction. The refrigerant flows into the intermediate tube body. In the mixing chamber, the slope baffle reduces the flow area of ​​the refrigerant in the tube to increase the flow velocity for pressure expansion. The flow area reaches 280mm 2 , the circulation speed reaches 38m / s, and a diffusion chamber 325 is formed on the high-pressure outlet side of the mixing chamber 323, and the ejection port 324 is arranged on the output side of the ramp baffle. The high-speed refrigerant formed in the circulation gap formed between the ramp baffle and the intermediate tube body and the refrigerant refluxed along the ejection port are exchanged in momentum and mass in the mixing chamber, and the two fluids are mixed to finally form a uniform flow rate that gradually balances, accompanied by an increase in pressure. Subsequently, the mixed fluid enters the diffusion chamber 325, the flow rate decreases, and the pressure further increases. At the high-pressure outlet, the pressure of the mixed fluid is higher than the pressure at the low-pressure inlet, forming a fluid with low flow rate and high static pressure. The ejector effectively utilizes the energy of the low-pressure evaporator, enhances the refrigerant flow and pressure through the ejection effect of the low-pressure gas, reduces the burden on the compressor, and improves the overall energy efficiency of the heat pump unit.

[0030] The first pipeline between the one-way valve 303 and the second solenoid valve 304 is connected with a third pipeline 6, the third pipeline 6 is connected with the E port of the four-way reversing valve, the S port of the four-way reversing valve is connected with the air inlet of the gas-liquid separator, the gas outlet of the gas-liquid separator is connected with the M port of the regenerator, and the N port of the regenerator is connected with the liquid return port of the compressor; the four-way reversing valve 7 is flexibly switched between the heating mode and the cooling mode, and the system quickly switches the working modes of the compressor, condenser, evaporator and other components by controlling the flow direction of the four-way reversing valve to achieve the best operation under different working conditions. The liquid outlet of the gas-liquid separator is connected with the liquid inlet of the evaporator. A second electronic expansion valve 11 is provided on the pipeline between the liquid outlet of the gas-liquid separator and the liquid inlet of the evaporator.

[0031] The heat pump unit is provided with a refrigerant circulating therein, wherein the refrigerant comprises 9.5% by mass of CO2 and 90.5% by mass of R32 refrigerant. During the operation of the heat pump unit, the refrigerant maintains a relatively high evaporation pressure at a low evaporation temperature.

[0032] Example 2

[0033] like Figure 2 As shown, a control method of a heat pump unit using a novel ejector component is used, wherein the heat pump unit using the novel ejector component includes a heating mode and a cooling / defrosting mode;

[0034] Heating mode: when there is a demand for heating, the compressor 8 starts, and the refrigerant enters through the D port of the four-way reversing valve, flows to the condenser along the C port of the four-way valve reversing valve, forms a high-pressure liquid refrigerant, enters the regenerator 9 through the first electronic expansion valve 4, exchanges heat with the low-temperature gaseous refrigerant of the return compressor to form a low-temperature and high-pressure liquid refrigerant, the third solenoid valve 301 is opened and the first solenoid valve 201 is closed, the low-temperature and high-pressure liquid refrigerant passes through the third solenoid valve 301 and enters along the low-pressure inlet of the ejector 302 in turn, and the liquid is pressurized and accelerated through the slope block of the ejector 302 to form a high-pressure and high-speed injection liquid refrigerant, enters the E port of the four-way reversing valve after the one-way valve, and then enters the gas-liquid separator 10. The gas-liquid separator 10 separates the gas in the liquid refrigerant and then enters the regenerator 9 along the M port of the regenerator. After exchanging heat with the high-pressure liquid refrigerant in the regenerator 9, it flows back to the compressor 8 from the N port of the regenerator;

[0035] The second solenoid valve 304 is closed, and the liquid in the gas-liquid separator 10 enters the evaporator for heat exchange through the second electronic expansion valve 11, forming a gaseous refrigerant that is sucked in by the ejector port 302, circulates along the high-pressure outlet of the ejector 302 and enters the gas-liquid separator again for secondary gas-liquid 1 separation, and the liquid refrigerant separated from the gas-liquid separator 10 enters the evaporator 1 for heat exchange. After the high-pressure liquid refrigerant generated by the compressor enters the condenser 5, it passes through the heat exchange process of the first electronic expansion valve 4 and the regenerator 9, recovering energy to the maximum extent and improving the overall thermal efficiency of the system. The slope baffle of the ejector 302 rapidly increases the pressure and speed of the low-temperature and high-pressure liquid refrigerant, forming a high-speed injection of liquid refrigerant, which effectively enhances the heat transfer capacity of the system, reduces the burden of the compressor 8, and improves the heating efficiency.

[0036] Example 3

[0037] like Figure 3As shown, in the refrigeration / defrosting mode: when there is a refrigeration demand, the third solenoid valve 301 and the second electronic expansion valve 11 are closed, the compressor 8 is started with a delay, and the system runs stably at startup to avoid the impact of instantaneous pressure fluctuations on the system. After a delay of 90 seconds, the refrigerant is compressed and heated to form a high-temperature liquid refrigerant. The high-temperature liquid refrigerant flows in through the D port of the four-way reversing valve and flows out through the E port of the four-way reversing valve in turn, and then enters the evaporator 1 through the second solenoid valve 304 for heat exchange to form a high-temperature gaseous refrigerant. The high-temperature gaseous refrigerant passes through the first The solenoid valve 201 flows into the regenerator K port and enters the regenerator 9. After heat exchange in the regenerator 9, it flows out along the regenerator H port. After throttling through the second electronic expansion valve 11, it forms a low-temperature gaseous refrigerant and enters the condenser to form a low-temperature liquid refrigerant. It enters the gas-liquid separator 10 along the four-way reversing valve C port and the four-way reversing valve S port. The gaseous refrigerant after gas-liquid separation in the gas-liquid separator 10 enters the regenerator along the regenerator M port for heat exchange. The refrigerant after heat exchange flows back to the compressor through the regenerator N port for circulation, thereby meeting the cooling / defrosting requirements of the environment.

[0038] The electrical components mentioned in this article are all connected to an external main controller and 380V commercial power, and the main controller can be a conventional known device for control such as a computer.

[0039] In the description of this specification, the terms "connect", "install", "fix", "set", etc. are understood in a broad sense. For example, "connection" is a fixed connection or an indirect connection through an intermediate component without affecting the relationship between components and technical effects. It is also an integral connection or a partial connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention or invention can be understood according to specific circumstances. The above is only a preferred specific implementation of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, shall make equivalent replacements or changes according to the technical solution and inventive concept of the present invention, which shall be covered within the protection scope of the present invention.

Claims

1. A heat pump unit using a new type of ejector component, characterized in that: The invention comprises a compressor (8), a condenser (5), a regenerator (9), an evaporator (1), a gas-liquid separator (10) and a four-way reversing valve (7), wherein the four-way reversing valve (7) comprises a C port, a D port, an E port and an S port, wherein the liquid outlet of the compressor is connected to the D port of the four-way reversing valve, the C port of the four-way reversing valve is connected to the inlet of the condenser, the outlet of the condenser is connected to the H port of the regenerator, the K port of the regenerator is provided with a first pipeline (3) and a second pipeline (2) in parallel, the other end of the first pipeline (3) is connected to the liquid inlet of the evaporator, and the second pipeline (2) is connected to the H port of the regenerator. The other end of the circuit (2) is connected to the liquid outlet of the evaporator. The first pipeline is provided with a third solenoid valve (301), an ejector (302), a one-way valve (303) and a second solenoid valve (304) in sequence from the regenerator to the evaporator. The ejector (302) includes a low-pressure inlet (321), a high-pressure outlet (326) and an ejector port (324). The low-pressure inlet is connected to the third solenoid valve (301), the high-pressure outlet is connected to the one-way valve (303), and the ejector port is connected to the liquid outlet of the evaporator (1). A third pipeline (6) is connected to the first pipeline between the one-way valve (303) and the second solenoid valve (304), the third pipeline is connected to the E port of the four-way reversing valve, the S port of the four-way reversing valve is connected to the air inlet of the gas-liquid separator, the air outlet of the gas-liquid separator is connected to the M port of the regenerator, and the N port of the regenerator is connected to the liquid return port of the compressor; The liquid outlet of the gas-liquid separator is connected to the liquid inlet of the evaporator.

2. A heat pump unit using a novel ejector component according to claim 1, characterized in that: The ejector (302) comprises a three-way pipe, a low-pressure inlet (321) and a high-pressure outlet (326) are respectively arranged at the two ends of the three-way pipe, an ejection port (324) is arranged in the vertical direction of the three-way pipe, a diameter of the intermediate pipe body (322) between the low-pressure inlet and the high-pressure outlet is smaller than the diameter of the pipe ports at the two ends, a mixing chamber (323) is formed in the space of the intermediate pipe body, and a slope baffle (327) inclined toward the high-pressure outlet is arranged on the inner wall of the intermediate pipe body, the slope baffle forms an inclination angle of 30°-50° with the axial direction, and the slope baffle reduces the flow area of ​​the refrigerant in the pipe to increase the flow velocity for pressure expansion, and the flow area reaches 70-300mm 2 The flow velocity reaches 7.5-40 m / s, a diffusion chamber (325) is formed on the high-pressure outlet side of the mixing chamber, and the injection port is arranged on the output side of the ramp baffle.

3. A heat pump unit using a novel ejector component according to claim 2, characterized in that: A first solenoid valve (201) is provided on the second pipeline (2), a first electronic expansion valve (4) is provided on the pipeline between the condenser outlet and the H port of the regenerator, and a second electronic expansion valve (11) is provided on the pipeline between the liquid outlet of the gas-liquid separator and the liquid inlet of the evaporator.

4. A heat pump unit using a novel ejector component according to claim 3, characterized in that: A refrigerant is circulated in the heat pump unit, and the refrigerant includes 9.5% by mass of CO2 and 90.5% by mass of R32 refrigerant.

5. A control method for a heat pump unit using a novel ejector component, using the heat pump unit using the novel ejector component according to claim 4, characterized in that: The heat pump unit includes a heating mode and a cooling / defrosting mode; Heating mode: the compressor (8) is started, the refrigerant enters through the D port of the four-way reversing valve, flows along the C port of the four-way reversing valve to the condenser (5), forms a high-pressure liquid refrigerant, passes through the first electronic expansion valve (4), enters the regenerator, exchanges heat with the low-temperature gaseous refrigerant of the regenerator, forms a low-temperature and high-pressure liquid refrigerant, the third solenoid valve (301) is opened and the first solenoid valve (201) is closed, the low-temperature and high-pressure liquid refrigerant passes through the third solenoid valve (301) and enters along the low-pressure inlet of the ejector (302), passes through the slope block of the ejector, increases the pressure and speed of the liquid, forms a high-pressure and high-speed injection liquid refrigerant, enters along the one-way valve, enters the E port of the four-way reversing valve, and then enters the gas-liquid separator (10), the gas-liquid separator separates the gas in the liquid refrigerant, and then enters the regenerator (9) along the M port of the regenerator, exchanges heat with the high-pressure liquid refrigerant in the regenerator (9), and then flows back to the compressor (8) from the N port of the regenerator; The second solenoid valve (304) is closed, and the liquid in the gas-liquid separator (10) enters the evaporator for heat exchange through the second electronic expansion valve (11), forming a gaseous refrigerant that is sucked in by the ejector port, circulates along the ejector high-pressure outlet and enters the gas-liquid separator (10) again for secondary gas-liquid separation. The liquid refrigerant separated in the gas-liquid separator enters the evaporator for heat exchange.

6. A control method for a heat pump unit using a novel ejector component according to claim 5, characterized in that: The refrigeration / defrosting mode: when there is a refrigeration demand, the third solenoid valve (301) and the second electronic expansion valve (11) are closed, the compressor (8) is started, and after a delay of 90s-110s, the refrigerant flows in through the D port of the four-way reversing valve and flows out through the E port of the four-way reversing valve in sequence, and then enters the evaporator through the second solenoid valve (304) for heat exchange, flows into the K port of the regenerator through the first solenoid valve (201) and enters the regenerator (9), and after heat exchange in the regenerator, flows out through the H port of the regenerator, enters the condenser (5) after throttling through the second electronic expansion valve (11), and enters the gas-liquid separator (10) through the C port of the four-way reversing valve and the S port of the four-way reversing valve. After gas-liquid separation in the gas-liquid separator, the gaseous refrigerant enters the regenerator (9) through the M port of the regenerator for heat exchange, and the refrigerant after heat exchange flows back to the compressor (8) through the N port of the regenerator for circulation.

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