A latent separation heating high-efficiency steam heat pump unit and a control method thereof

Abstract

The present application relates to steam heat pump unit technical field, especially to a kind of latent heat separation heating high-efficiency steam heat pump unit and control method thereof, including steam generation system, refrigerant circulation system, circulating heating system, water supply preheating system and electrical control system, condensing component includes sensible heat condenser and latent heat condenser, sensible heat condenser and latent heat condenser are connected in series, first regulating valve is equipped on the refrigerant pipeline connected between sensible heat condenser and latent heat condenser, adopt innovative sensible heat and latent heat accurate separation, refrigerant step-by-step recovery mode, respectively through high-grade sensible heat and low-grade latent heat to hot water heating, to obtain the highest hot water temperature with the lowest condensing temperature, substantially improve the energy efficiency ratio of heat pump unit, and can be step-by-step recovery to refrigerant, reduce energy consumption while making refrigerant compressor operate in lower condensing temperature environment, substantially improve the reliability of heat pump unit.

Description

Technical Field

[0001] This invention relates to the field of steam heat pump unit technology, and in particular to a high-efficiency steam heat pump unit with sensible and latent heat separation heating and its control method. Background Technology

[0002] Currently, there are general steam heat pump systems that can produce high-temperature steam using refrigerant compression cycles. The refrigerant discharge temperature at the compressor (i.e., the sensible heat temperature of the refrigerant) is about 25-35°C higher than the condensation temperature (i.e., the latent heat temperature of the refrigerant). The sensible heat temperature of the refrigerant represents higher-grade heat energy, while the latent heat temperature represents lower-grade heat energy.

[0003] Ordinary steam heat pump systems of this type typically use a single-stage condenser, which mixes higher-grade refrigerant with lower-grade refrigerant to heat high-temperature hot water, causing the water to boil and produce steam. However, this method of heat exchange between the mixed refrigerant and the high-temperature hot water cannot guarantee that the hot water will first exchange heat with the lower-grade refrigerant and then with the higher-grade refrigerant. As a result, a higher latent heat temperature (i.e., condensation temperature) of the refrigerant is required to heat the high-temperature hot water to the same temperature to produce steam. This causes the compressor's condensation temperature to rise. When producing high-temperature steam at the same temperature, the heat pump system not only has high energy consumption and low efficiency, but it is also prone to compressor damage due to overheating, reducing the reliability of the heat pump unit. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a high-efficiency steam heat pump unit with low energy consumption, high efficiency, high stability, high reliability and long service life, and its control method.

[0005] The technical solution adopted in this invention is as follows:

[0006] A high-efficiency steam heat pump unit with apparent and latent heat separation heating includes:

[0007] The steam generating system includes a flash tank, a steam compressor, and a steam outlet, which are connected in sequence by pipelines.

[0008] The refrigerant circulation system includes a refrigerant compressor, a condensing assembly, an expansion valve, and an evaporator connected in sequence through pipes to form a closed loop. The condensing assembly includes a sensible heat condenser and a latent heat condenser, which are connected in series. A first regulating valve is provided on the refrigerant pipeline connecting the sensible heat condenser and the latent heat condenser.

[0009] The circulating heating system includes a first water pump and a second regulating valve. One end of the first water pump is connected to the flash tank and the other end is connected to the inlet of the latent heat condenser. One end of the second regulating valve is connected to the outlet of the sensible heat condenser and the other end is connected to the flash tank.

[0010] The water replenishment and preheating system includes a water inlet, a second water pump, and a heat exchanger connected between the condenser assembly and the expansion valve. One end of the second water pump is connected to the water inlet, and the other end is connected to the water inlet of the heat exchanger. The water outlet of the heat exchanger is connected to the connecting pipe between the first water pump and the flash tank.

[0011] The electrical control system includes a sensor assembly and a central controller electrically connected to the sensor assembly. The central controller is electrically connected to a first regulating valve, a second regulating valve, a refrigerant compressor, a first water pump, a second water pump, and a steam compressor.

[0012] Preferably, the sensor assembly includes a fourth pressure sensor, a fourth temperature sensor, a first pressure sensor, a second pressure sensor, a third temperature sensor, a liquid level sensor, and a third pressure sensor.

[0013] Both the fourth pressure sensor and the fourth temperature sensor are mounted on the latent heat condenser;

[0014] The first pressure sensor is installed on the connecting pipe between the second regulating valve and the sensible heat condenser.

[0015] The second pressure sensor and the third temperature sensor are both installed on the connecting pipe between the flash tank and the steam compressor.

[0016] The level sensor is installed inside the flash tank;

[0017] The third pressure sensor is installed on the connecting pipe between the steam compressor and the steam outlet.

[0018] Preferably, the electrical control system further includes a sensor data acquisition module for collecting sensing data and a display operation module for setting preset control parameters. The sensor data acquisition module is electrically connected to the sensor assembly and the central controller, respectively, and the display operation module is electrically connected to the central controller.

[0019] Preferably, the sensor assembly further includes a first temperature sensor and a second temperature sensor. The first temperature sensor is installed on the connecting pipe between the first water pump and the latent heat condenser, and the second temperature sensor is installed on the connecting pipe between the second regulating valve and the sensible heat condenser.

[0020] This invention also provides a control method for a high-efficiency steam heat pump unit with apparent and latent heating separation, wherein the actual test pressure of the fourth pressure sensor is P. 实测压力4 P 实测压力4 The corresponding refrigerant saturation temperature is T. P4饱和 The actual measured temperature of the fourth temperature sensor was T. 实测温度4 Set T on the display operation module设定精度4 ;

[0021] When T P4饱和 -T 设定精度4 ≤T 实测温度4 ≤T P4饱和 +T 设定精度4 At this time, the first regulating valve remains in its original state;

[0022] When T 实测温度4 >T P4饱和 +T 设定精度4 At that time, the central controller controls the first regulating valve to reduce its opening.

[0023] When T 实测温度4 <T P4饱和 -T 设定精度4 At that time, the central controller controls the first regulating valve to increase its opening.

[0024] As a preferred option, the actual test pressure of the first pressure sensor is P. 实测压力1 The pressure setpoint is P. 压力设定1 Set the control precision to P 设定精度1 Set P on the display operation module 压力设定1 and P 设定精度1 ;

[0025] When P 压力设定1 -P 设定精度1 ≤P 实测压力1 ≤P 压力设定1 +P 设定精度1 At this time, the second regulating valve remains in its original state;

[0026] When P 实测压力1 >P 压力设定1 +P 设定精度1 At that time, the central controller controls the second regulating valve to increase its opening.

[0027] When P 实测压力1 <P 压力设定1 -P 设定精度1 At that time, the central controller controls the second regulating valve to reduce its opening.

[0028] Preferably, the steam is set to be controlled by pressure or temperature on the display operating system.

[0029] When steam is set to be controlled by pressure.

[0030] The actual test pressure of the second pressure sensor is P. 实测压力2 The pressure setpoint is P. 压力设定2 Set the control precision to P 设定精度2 Set P on the display operation module 压力设定2 and P 设定精度2 ,

[0031] When P 压力设定2 -P 设定精度2 ≤P 实测压力2 ≤P 压力设定2 +P 设定精度2 At this time, the refrigerant compressor remains in its original state.

[0032] When P 实测压力2 >P 压力设定2 +P 设定精度2 At that time, the central controller controls the refrigerant compressor to operate under load.

[0033] When P 实测压力2 <P 压力设定2 -P 设定精度2 At that time, the central controller controls the refrigerant compressor to load;

[0034] When steam is set to be controlled by temperature.

[0035] The actual temperature measured by the third temperature sensor is T. 实测温度3 The temperature setpoint is T. 温度设定3 Set the control precision to T 设定精度3 Set T on the display operation module 温度设定3 and T 设定精度3 ,

[0036] When T 温度设定3 -T 设定精度3 ≤T 实测温度3 ≤T 温度设定3 +T 设定精度3 At this time, the refrigerant compressor remains in its original state;

[0037] When T 实测温度3 >T 温度设定3 +T 设定精度3 At that time, the central controller controls the refrigerant compressor to operate under load;

[0038] When T 实测温度3 <T 温度设定3 -T 设定精度3 At that time, the central controller controls the refrigerant compressor to load.

[0039] Preferably, the liquid level sensor actually tests a liquid level of H. 实测液位 The liquid level setpoint is H. 液位设定 Set the control precision to H 设定精度 Set H on the display operation module 液位设定 and H 液位精度 ;

[0040] When H 液位设定 -H 设定精度 ≤H 实测液位 ≤H 液位设定 +H 设定精度 At that time, the second water pump remains in its original state;

[0041] When H 实测液位 >H 液位设定 +H 设定精度 At that time, the central controller controls the second water pump to reduce its opening degree;

[0042] When H 实测液位 <H 液位设定 -H 设定精度 At that time, the central controller controls the second water pump to increase its opening.

[0043] As a preferred option, the actual test pressure of the third pressure sensor is P. 实测压力3 The pressure setpoint is P. 压力设定3 Set the control precision to P 设定精度3 Set P on the display operation module 压力设定3 and P 设定精度3 ;

[0044] When P 压力设定3 -P 设定精度3 ≤P 实测压力3 ≤P 压力设定3 +P 设定精度3 At this time, the steam compressor remains in its original state;

[0045] When P 实测压力3 >P 压力设定3 +P 设定精度3 At that time, the central controller controls the steam compressor to operate under load;

[0046] When P 实测压力3 <P 压力设定3 -P 设定精度3 At that time, the central controller controls the steam compressor to load.

[0047] The beneficial effects of this invention are as follows:

[0048] This high-efficiency steam heat pump unit separates the refrigerant into high-grade sensible heat and low-grade latent heat through sensible heat condensers and latent heat condensers. The hot water is then heated in stages by the latent heat condenser and sensible heat condenser, respectively, to obtain the highest hot water temperature with the lowest condensing temperature. This significantly improves the energy efficiency ratio of the heat pump unit and enables the refrigerant to be recovered in stages, reducing energy consumption while allowing the refrigerant compressor to operate in a lower condensing temperature environment, thus greatly improving the reliability of the heat pump unit. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the overall system structure of the present invention.

[0050] Figure 2 This is a connection framework diagram of the electrical control system.

[0051] Figure 3This is a schematic diagram of the steam generation system.

[0052] Figure 4 This is a schematic diagram of the refrigerant circulation system.

[0053] Figure 5 This is a schematic diagram of a circulating heating system.

[0054] Figure 6 A schematic diagram of the water replenishment and preheating system. Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] Please see Figure 1 This invention provides a technical solution: a high-efficiency steam heat pump unit with apparent and latent heat separation heating, comprising:

[0057] Please see Figure 3 Steam generating system 1, which includes a flash tank 11, a steam compressor 12 and a steam outlet 13 connected in sequence by pipelines;

[0058] Please see Figure 4 The refrigerant circulation system 2 includes a refrigerant compressor 21, a condenser assembly 22, an expansion valve 23, and an evaporator 24, which are connected in sequence through pipes to form a closed loop. The condenser assembly 22 includes a sensible heat condenser 221 and a latent heat condenser 222, which are connected in series. A first regulating valve 25 is provided on the refrigerant pipeline connecting the sensible heat condenser 221 and the latent heat condenser 222. The first regulating valve 25 can be configured according to actual needs or is not required.

[0059] Please see Figure 5 The circulating heating system 3 includes a first water pump 31 and a second regulating valve 32. One end of the first water pump 31 is connected to the flash tank 11 and the other end is connected to the water inlet of the latent heat condenser 222. One end of the second regulating valve 32 is connected to the water outlet of the sensible heat condenser 221 and the other end is connected to the flash tank 11.

[0060] Please see Figure 6The water replenishment and preheating system 4 includes an inlet 41, a second water pump 42, and a heat exchanger 43 connected between the condenser assembly 22 and the expansion valve 23. One end of the second water pump 42 is connected to the inlet 41, and the other end is connected to the inlet of the heat exchanger 43. The outlet of the heat exchanger 43 is connected to the connecting pipe between the first water pump 31 and the flash tank 11.

[0061] Please see Figure 2 The electrical control system 5 includes a sensor assembly and a central controller 51 electrically connected to the sensor assembly. The central controller 51 is electrically connected to the first regulating valve 25, the second regulating valve 32, the refrigerant compressor 21, the first water pump 31, the second water pump 42, and the steam compressor 12.

[0062] In order to facilitate the monitoring of temperature, pressure or liquid level at multiple locations in the unit, in this embodiment, preferably, the sensor assembly includes a fourth pressure sensor 501, a fourth temperature sensor 502, a first pressure sensor 503, a second pressure sensor 504, a third temperature sensor 505, a liquid level sensor 506, and a third pressure sensor 507.

[0063] The fourth pressure sensor 501 and the fourth temperature sensor 502 are both mounted on the latent heat condenser 222;

[0064] The first pressure sensor 503 is installed on the connecting pipe between the second regulating valve 32 and the sensible heat condenser 221.

[0065] The second pressure sensor 504 and the third temperature sensor 505 are both installed on the connecting pipe between the flash tank 11 and the steam compressor 12.

[0066] The level sensor 506 is installed inside the flash tank 11;

[0067] The third pressure sensor 507 is installed on the connecting pipe between the steam compressor 12 and the steam outlet 13.

[0068] In order to facilitate the unified collection of data sensed by the sensor components and to facilitate the setting of preset control parameters, in this embodiment, preferably, the electrical control system 5 further includes a sensor data acquisition module 52 for collecting sensed data and a display operation module 53 for setting preset control parameters. The sensor data acquisition module 52 is electrically connected to the sensor components and the central controller 51, respectively, and the display operation module 53 is electrically connected to the central controller 51.

[0069] To further facilitate monitoring of temperatures at multiple locations within the unit, in this embodiment, preferably, the sensor assembly further includes a first temperature sensor 508 and a second temperature sensor 509. The first temperature sensor 508 is installed on the connecting pipe between the first water pump 31 and the latent heat condenser 222, and the second temperature sensor 509 is installed on the connecting pipe between the second regulating valve 32 and the sensible heat condenser 221.

[0070] This invention also provides a control method for a clean and efficient steam heat pump unit.

[0071] To facilitate overheat detection and corresponding adjustments for the latent heat condenser 222, in this embodiment, preferably, the actual test pressure of the fourth pressure sensor 501 is P. 实测压力4 P 实测压力4 The corresponding refrigerant saturation temperature is T. P4饱和 The actual measured temperature of the fourth temperature sensor 502 is T. 实测温度4 Set T on the display operation module 53 设定精度4 ;

[0072] When T P4饱和 -T 设定精度4 ≤T 实测温度4 ≤T P4饱和 +T 设定精度4 At this time, the first regulating valve 25 remains in its original state;

[0073] When T 实测温度4 >T P4饱和 +T 设定精度4 If the sensible heat gaseous refrigerant in the sensible heat condenser 221 flows into the latent heat condenser 222 in excess, the central controller 51 controls the first regulating valve 25 to reduce the opening degree.

[0074] When T 实测温度4 <T P4饱和 -T 设定精度4 At that time, the central controller 51 controls the first regulating valve 25 to increase its opening.

[0075] To facilitate the adjustment of the pipe pressure in the circulating heating system 3, in this embodiment, preferably, the actual test pressure of the first pressure sensor 503 is P. 实测压力1 The pressure setpoint is P. 压力设定1 Set the control precision to P 设定精度1 Set P on the display operation module 53 压力设定1 and P 设定精度1 ;

[0076] When P 压力设定1 -P 设定精度1 ≤P 实测压力1 ≤P 压力设定1 +P设定精度1 At this time, the second regulating valve 32 remains in its original state;

[0077] When P 实测压力1 >P 压力设定1 +P 设定精度1 At that time, the central controller 51 controls the second regulating valve 32 to increase its opening degree;

[0078] When P 实测压力1 <P 压力设定1 -P 设定精度1 At that time, the central controller 51 controls the second regulating valve 32 to reduce the opening degree.

[0079] In order to facilitate the output of steam based on pressure or temperature, in this embodiment, preferably, the steam is set to be controlled by pressure or temperature on the display operating system.

[0080] When steam is set to be controlled by pressure.

[0081] The actual measured pressure of the second pressure sensor 504 is P. 实测压力2 The pressure setpoint is P. 压力设定2 Set the control precision to P 设定精度2 Set P on the display operation module 53 压力设定2 and P 设定精度2 ,

[0082] When P 压力设定2 -P 设定精度2 ≤P 实测压力2 ≤P 压力设定2 +P 设定精度2 At this time, the refrigerant compressor 21 remains in its original state.

[0083] When P 实测压力2 >P 压力设定2 +P 设定精度2 At that time, the central controller 51 controls the refrigerant compressor 21 to operate.

[0084] When P 实测压力2 <P 压力设定2 -P 设定精度2 At that time, the central controller 51 controls the refrigerant compressor 21 to load;

[0085] When steam is set to be controlled by temperature.

[0086] The actual measured temperature of the third temperature sensor 505 is T. 实测温度3 The temperature setpoint is T. 温度设定3 Set the control precision to T 设定精度3 Set T on the display operation module 53 温度设定3 and T 设定精度3 ,

[0087] When T温度设定3 -T 设定精度3 ≤T 实测温度3 ≤T 温度设定3 +T 设定精度3 At this time, the refrigerant compressor 21 remains in its original state;

[0088] When T 实测温度3 >T 温度设定3 +T 设定精度3 At that time, the central controller 51 controls the refrigerant compressor 21 to operate;

[0089] When T 实测温度3 <T 温度设定3 -T 设定精度3 At that time, the central controller 51 controls the refrigerant compressor 21 to load.

[0090] To facilitate maintaining the liquid level balance in flash tank 11 according to the set value and to replenish water according to the liquid level in flash tank 11, in this embodiment, preferably, the actual liquid level measured by the liquid level sensor 506 is H. 实测液位 The liquid level setpoint is H. 液位设定 Set the control precision to H 设定精度 Set H on the display operation module 53 液位设定 and H 液位精度 ;

[0091] When H 液位设定 -H 设定精度 ≤H 实测液位 ≤H 液位设定 +H 设定精度 At that time, the second water pump 42 remains in its original state;

[0092] When H 实测液位 >H 液位设定 +H 设定精度 At that time, the central controller 51 controls the second water pump 42 to reduce its opening degree;

[0093] When H 实测液位 <H 液位设定 -H 设定精度 At that time, the central controller 51 controls the second water pump 42 to increase its opening degree.

[0094] To facilitate maintaining pressure balance at steam outlet 62 according to the set value, in this embodiment, preferably, the actual test pressure of the third pressure sensor 507 is P. 实测压力3 The pressure setpoint is P. 压力设定3 Set the control precision to P 设定精度3 Set P on the display operation module 53 压力设定3 and P 设定精度3 ;

[0095] When P 压力设定3 -P 设定精度3 ≤P实测压力3 ≤P 压力设定3 +P 设定精度3 At this time, the steam compressor 12 remains in its original state;

[0096] When P 实测压力3 >P 压力设定3 +P 设定精度3 At that time, the central controller 51 controls the steam compressor 12 to operate under load;

[0097] When P 实测压力3 <P 压力设定3 -P 设定精度3 At that time, the central controller 51 controls the steam compressor 12 to load.

[0098] The working principle and usage process of this invention are as follows: In the refrigerant circulation system 2, the refrigerant compressor 21 compresses the low-temperature, low-pressure gaseous working fluid into a high-temperature, high-pressure gas, which then passes through the condenser assembly 22. In the condenser assembly 22, the gaseous working fluid releases heat and condenses into a high-temperature, high-pressure liquid. After being throttled by the expansion valve 23, the liquid becomes a low-temperature, low-pressure liquid. The low-temperature, low-pressure liquid working fluid is sent to the evaporator 24, where it absorbs heat and evaporates to become a low-temperature, low-pressure gas. The gaseous working fluid then re-enters the refrigerant compressor 21, thus completing the refrigerant circulation.

[0099] Because fresh water needs to be replenished after the steam evaporates, typically tap water at a temperature of 10–25°C, the second water pump 42 drives the tap water to flow in from the inlet 41 and then into the heat exchanger 43. The tap water is heated by heat exchange in the heat exchanger 43, achieving a preheating effect and improving energy utilization. At the same time, it cools the refrigerant flowing out after passing through the condenser assembly 22, increasing the subcooling of the refrigerant.

[0100] The relatively low-temperature hot water is first heated by the latent heat of the low-grade refrigerant in the latent heat condenser 222. At the same time, the relatively low-temperature hot water is used to cool the refrigerant in the latent heat condenser 222, increasing the subcooling of the refrigerant and lowering the condensation temperature. Then, the hot water enters the sensible heat condenser 221 and is heated to a higher temperature by the sensible heat of the high-grade refrigerant. Finally, it enters the flash tank 11 to boil and produce water vapor.

[0101] The latent heat condenser 222 is overheated by the fourth pressure sensor 501 and the fourth temperature sensor 502. When an excess of sensible heat gaseous refrigerant enters the latent heat condenser 222, the opening of the first regulating valve 25 is reduced, and vice versa, thereby achieving a more precise sensible and latent heat separation setting.

[0102] The cooled water in the flash tank 11 is reheated by the first water pump 31 through the latent heat condenser 222 and the sensible heat condenser 221, and then returned to the flash tank 11 after being throttled by the second regulating valve 32.

[0103] In summary, this invention employs an innovative method of precise separation of sensible and latent heat and staged refrigerant recovery. The refrigerant exhaust from the refrigerant compressor 21 is divided into high-grade sensible heat and low-grade latent heat, which are used to heat hot water. The refrigerant is then recovered sequentially through the sensible heat condenser 221 and the latent heat condenser 222, respectively. This achieves the highest hot water temperature with the lowest condensing temperature, significantly improving the unit's energy efficiency ratio and reducing energy consumption. Simultaneously, it allows the compressor to operate in a lower condensing temperature environment, greatly enhancing the unit's reliability. This effectively solves the problems of conventional steam heat pump systems where the high-grade sensible heat and low-grade latent heat of the refrigerant are mixed and disordered, leading to higher condensing temperatures required to produce steam at the same temperature. These problems result in high energy consumption, low efficiency, and a tendency for compressor overheating and damage.

[0104] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency steam heat pump unit with apparent and latent heat separation heating, characterized in that: include: A steam generating system (1) includes a flash tank (11), a steam compressor (12), and a steam outlet (13) connected in sequence by pipes. The refrigerant circulation system (2) includes a refrigerant compressor (21), a condenser assembly (22), an expansion valve (23), and an evaporator (24) connected in sequence by pipes to form a closed loop. The condenser assembly (22) includes a sensible heat condenser (221) and a latent heat condenser (222). The sensible heat condenser (221) and the latent heat condenser (222) are connected in series. A first regulating valve (25) is provided on the refrigerant pipeline connecting the sensible heat condenser (221) and the latent heat condenser (222). The circulating heating system (3) includes a first water pump (31) and a second regulating valve (32). One end of the first water pump (31) is connected to the flash tank (11), and the other end is connected to the water inlet of the latent heat condenser (222). One end of the second regulating valve (32) is connected to the water outlet of the sensible heat condenser (221), and the other end is connected to the flash tank (11). The water replenishment and preheating system (4) includes an inlet (41), a second water pump (42), and a heat exchanger (43) connected between the condenser assembly (22) and the expansion valve (23). One end of the second water pump (42) is connected to the inlet (41), and the other end is connected to the inlet of the heat exchanger (43). The outlet of the heat exchanger (43) is connected to the connecting pipe between the first water pump (31) and the flash tank (11). An electrical control system (5) is provided, comprising a sensor assembly and a central controller (51) electrically connected to the sensor assembly. The central controller (51) is electrically connected to a first regulating valve (25), a second regulating valve (32), a refrigerant compressor (21), a first water pump (31), a second water pump (42), and a steam compressor (12).

2. The high-efficiency steam heat pump unit with apparent and latent heat separation heating according to claim 1, characterized in that: The sensor assembly includes a fourth pressure sensor (501), a fourth temperature sensor (502), a first pressure sensor (503), a second pressure sensor (504), a third temperature sensor (505), a liquid level sensor (506), and a third pressure sensor (507); The fourth pressure sensor (501) and the fourth temperature sensor (502) are both mounted on the latent heat condenser (222); The first pressure sensor (503) is installed on the connecting pipe between the second regulating valve (32) and the sensible heat condenser (221); The second pressure sensor (504) and the third temperature sensor (505) are both installed on the connecting pipe between the flash tank (11) and the steam compressor (12); The liquid level sensor (506) is installed inside the flash tank (11); The third pressure sensor (507) is installed on the connecting pipe between the steam compressor (12) and the steam outlet (13).

3. The high-efficiency steam heat pump unit with apparent and latent heat separation heating according to claim 2, characterized in that: The electrical control system (5) further includes a sensor data acquisition module (52) for collecting sensing data and a display operation module (53) for setting preset control parameters. The sensor data acquisition module (52) is electrically connected to the sensor assembly and the central controller (51) respectively, and the display operation module (53) is electrically connected to the central controller (51).

4. The high-efficiency steam heat pump unit with apparent and latent heat separation heating according to claim 3, characterized in that: The sensor assembly also includes a first temperature sensor (508) and a second temperature sensor (509). The first temperature sensor (508) is installed on the connecting pipe between the first water pump (31) and the latent heat condenser (222), and the second temperature sensor (509) is installed on the connecting pipe between the second regulating valve (32) and the sensible heat condenser (221).

5. A control method for a high-efficiency steam heat pump unit with apparent and latent heat separation heating as described in claim 3, characterized in that: The actual test pressure of the fourth pressure sensor (501) is P. 实测压力4 P 实测压力4 The corresponding refrigerant saturation temperature is T. P4饱和 The actual test temperature of the fourth temperature sensor (502) is T. 实测温度4 Set T on the display operation module (53) 设定精度4 ; When T P4饱和 -T 设定精度4 ≤T 实测温度4 ≤T P4饱和 +T 设定精度4 At this time, the first regulating valve (25) remains in its original state; When T 实测温度4 >T P4饱和 +T 设定精度4 At that time, the central controller (51) controls the first regulating valve (25) to reduce its opening; When T 实测温度4 <T P4饱和 -T 设定精度4 At that time, the central controller (51) controls the first regulating valve (25) to increase its opening.

6. The control method for a high-efficiency steam heat pump unit with apparent and latent heat separation heating according to claim 5, characterized in that: The actual test pressure of the first pressure sensor (503) is P. 实测压力1 The pressure setpoint is P. 压力设定1 Set the control precision to P 设定精度1 Set P on the display operation module (53) 压力设定1 and P 设定精度1 ; When P 压力设定1 -P 设定精度1 ≤P 实测压力1 ≤P 压力设定1 +P 设定精度1 At this time, the second regulating valve (32) remains in its original state; When P 实测压力1 >P 压力设定1 +P 设定精度1 At that time, the central controller (51) controls the second regulating valve (32) to increase its opening degree; When P 实测压力1 <P 压力设定1 -P 设定精度1 At that time, the central controller (51) controls the second regulating valve (32) to reduce the opening degree.

7. The control method for a high-efficiency steam heat pump unit with apparent and latent heat separation heating according to claim 5, characterized in that: On the display operating system, set the steam control target to pressure or temperature; When steam is set to be controlled by pressure. The actual test pressure of the second pressure sensor (504) is P. 实测压力2 The pressure setpoint is P. 压力设定2 Set the control precision to P 设定精度2 Set P on the display operation module (53) 压力设定2 and P 设定精度2 , When P 压力设定2 -P 设定精度2 ≤P 实测压力2 ≤P 压力设定2 +P 设定精度2 At this time, the refrigerant compressor (21) remains in its original state. When P 实测压力2 >P 压力设定2 +P 设定精度2 At that time, the central controller (51) controls the refrigerant compressor (21) to operate. When P 实测压力2 <P 压力设定2 -P 设定精度2 At that time, the central controller (51) controls the refrigerant compressor (21) to load; When steam is set to be controlled by temperature. The actual test temperature of the third temperature sensor (505) is T. 实测温度3 The temperature setpoint is T. 温度设定3 Set the control precision to T 设定精度3 Set T on the display operation module (53) 温度设定3 and T 设定精度3 , When T 温度设定3 -T 设定精度3 ≤T 实测温度3 ≤T 温度设定3 +T 设定精度3 At this time, the refrigerant compressor (21) remains in its original state; When T 实测温度3 >T 温度设定3 +T 设定精度3 At that time, the central controller (51) controls the refrigerant compressor (21) to operate; When T 实测温度3 <T 温度设定3 -T 设定精度3 At that time, the central controller (51) controls the refrigerant compressor (21) to load.

8. The control method for a high-efficiency steam heat pump unit with apparent and latent heat separation heating according to claim 5, characterized in that: The liquid level sensor (506) actually tests a liquid level of H. 实测液位 The liquid level setpoint is H. 液位设定 Set the control precision to H 设定精度 H is set on the display operation module (53). 液位设定 and H 液位精度 ; When H 液位设定 -H 设定精度 ≤H 实测液位 ≤H 液位设定 +H 设定精度 At this time, the second water pump (42) remains in its original state; When H 实测液位 >H 液位设定 +H 设定精度 At that time, the central controller (51) controls the second water pump (42) to reduce its opening degree; When H 实测液位 <H 液位设定 -H 设定精度 At that time, the central controller (51) controls the second water pump (42) to increase the opening degree.

9. The control method for a high-efficiency steam heat pump unit with apparent and latent heat separation heating according to claim 5, characterized in that: The actual test pressure of the third pressure sensor (507) is P. 实测压力3 The pressure setpoint is P. 压力设定3 Set the control precision to P 设定精度3 Set P on the display operation module (53) 压力设定3 and P 设定精度3 ; When P 压力设定3 -P 设定精度3 ≤P 实测压力3 ≤P 压力设定3 +P 设定精度3 At this time, the steam compressor (12) remains in its original state; When P 实测压力3 >P 压力设定3 +P 设定精度3 At that time, the central controller (51) controls the steam compressor (12) to operate; When P 实测压力3 <P 压力设定3 -P 设定精度3 At that time, the central controller (51) controls the steam compressor (12) to load.

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