阅读说明：本技术 热源塔热泵系统 (Heat source tower heat pump system ) 是由 祝建军 孟庆超 张虹 国德防 杨宝林 张捷 于 2021-01-07 设计创作，主要内容包括：本发明属于换热技术领域,具体提供一种热源塔热泵系统。本发明旨在解决现有热源塔热泵系统不能很好地利用储热构件中的热量参与换热而导致节能效果不佳的问题。为此,本发明的热源塔热泵系统包括冷媒循环回路、供热回路和热源塔循环回路,冷媒循环回路上设置有压缩机、四通阀、第一换热器、第二换热器、第三换热器和节流构件,供热回路包括以并联方式设置的第一换热支路和第二换热支路以及与第二换热支路相连的储热支路；本发明通过在压缩机和四通阀之间增设第一换热器,以使热源塔热泵系统运行不同模式时能够相应选择不同的换热路径,从而有效提升换热效率；同时,还通过第二换热器利用储热构件中储存的热量,进而全面提升系统利用储热的能力。(The invention belongs to the technical field of heat exchange, and particularly provides a heat source tower heat pump system. The invention aims to solve the problem that the existing heat source tower heat pump system cannot well utilize heat in a heat storage component to participate in heat exchange, so that the energy-saving effect is poor. Therefore, the heat source tower heat pump system comprises a refrigerant circulation loop, a heat supply loop and a heat source tower circulation loop, wherein the refrigerant circulation loop is provided with a compressor, a four-way valve, a first heat exchanger, a second heat exchanger, a third heat exchanger and a throttling component, and the heat supply loop comprises a first heat exchange branch and a second heat exchange branch which are arranged in parallel and a heat storage branch connected with the second heat exchange branch; according to the invention, the first heat exchanger is additionally arranged between the compressor and the four-way valve, so that different heat exchange paths can be correspondingly selected when the heat source tower heat pump system operates in different modes, and the heat exchange efficiency is effectively improved; meanwhile, the heat stored in the heat storage component is utilized through the second heat exchanger, and therefore the capacity of the system for utilizing heat storage is comprehensively improved.)

1. A heat source tower heat pump system is characterized in that the heat source tower heat pump system comprises a refrigerant circulation loop, a heat supply loop and a heat source tower circulation loop,

a compressor, a four-way valve, a first heat exchanger, a second heat exchanger, a third heat exchanger and a throttling component are arranged on the refrigerant circulating loop, an air inlet of the compressor is connected with a first valve port of the four-way valve, an air outlet of the compressor is connected with a second valve port of the four-way valve, the first heat exchanger is arranged between an air outlet of the compressor and the second valve port of the four-way valve, the second heat exchanger is connected with a third valve port of the four-way valve, the third heat exchanger is connected with a fourth valve port of the four-way valve, the throttling component is arranged between the second heat exchanger and the third heat exchanger,

the heat supply loop is provided with a heat supply pump to realize circulation, the heat supply loop comprises a first heat exchange branch and a second heat exchange branch which are arranged in parallel, the first heat exchange branch exchanges heat with the refrigerant circulation loop through the first heat exchanger, the second heat exchange branch exchanges heat with the refrigerant circulation loop through the second heat exchanger, the heat supply loop also comprises a heat storage branch which is connected with the second heat exchange branch, the heat storage branch is provided with a heat storage component and a heat storage pump, and two ends of the heat storage branch are respectively connected to two sides of the second heat exchanger,

and the heat source tower circulating loop is provided with a heat source tower heat exchanger and a coolant pump, and exchanges heat with the coolant circulating loop through the third heat exchanger.

2. A heat source tower heat pump system as claimed in claim 1, wherein the heating circuit further comprises a connecting branch,

one end of the connecting branch is connected to the second heat exchange branch, and the other end of the connecting branch is connected between the heat storage component and the heat storage pump.

3. The heat source tower heat pump system as claimed in claim 2, wherein valves are provided at both ends of the heat storage branch for controlling the on/off of the heat storage branch.

4. A heat source tower heat pump system as claimed in claim 2, wherein a valve is provided on the connecting branch for controlling the on/off of the connecting branch.

5. The heat source tower heat pump system of claim 1, wherein the heat supply pump comprises a plurality of sub-heat supply pumps arranged in parallel; and/or

The carrier refrigerant pump comprises a plurality of sub carrier refrigerant pumps arranged in parallel; and/or

The heat storage pump comprises a plurality of sub heat storage pumps which are arranged in parallel.

6. The heat source tower heat pump system according to claim 1, wherein a valve is provided on the first heat exchange branch for controlling the on-off of the first heat exchange branch, and/or

And a valve for controlling the second heat exchange branch to be switched on and off is arranged on the second heat exchange branch.

7. A heat source tower heat pump system as claimed in claim 1 further comprising a bridge branch, a first check valve, a second check valve, a third check valve and a fourth check valve disposed between the second heat exchanger and the third heat exchanger,

the first check valve and the third check valve are arranged in parallel with the second check valve and the fourth check valve, the arrangement directions of the first check valve and the third check valve are opposite, the arrangement directions of the second check valve and the fourth check valve are opposite, and the arrangement directions of the first check valve and the fourth check valve are the same,

one end of the bridge branch is connected between the first check valve and the third check valve, the other end of the bridge branch is connected between the second check valve and the fourth check valve, and the throttle member is disposed on the bridge branch.

8. A heat source tower heat pump system as claimed in claim 7, wherein the throttling member is a throttle valve.

9. The heat source tower heat pump system according to any one of claims 1 to 8, wherein a portion of the refrigerant circulation loop and a portion of the first heat exchange branch are both disposed in the first heat exchanger to effect heat exchange; and/or

A part of the refrigerant circulation loop and a part of the second heat exchange branch are both arranged in the second heat exchanger to realize heat exchange; and/or

And a part of the refrigerant circulation loop and a part of the heat source tower circulation loop are arranged in the third heat exchanger to realize heat exchange.

10. A heat source tower heat pump system according to any one of claims 1-8, wherein a liquid trap and a liquid separator are further provided on a main line of the heating circuit to achieve multi-end heating.

Technical Field

The invention belongs to the technical field of heat exchange, and particularly provides a heat source tower heat pump system.

Background

With the continuous development of heat exchange technology, various heat exchange devices are in operation. In recent years, a heat source tower heat pump system has attracted attention as an energy saving device that can flow heat from a low-level heat source air to a high-level heat source by using high-level energy. Specifically, in winter, the heat source tower can extract heat from air, the extracted heat is transferred to the heat source tower heat pump unit through the liquid secondary refrigerant to serve as a low-temperature heat source of the heat source tower heat pump unit, and the heat source tower heat pump heats through reverse Carnot cycle; in summer, the heat source tower heat pump is converted into a water chilling unit, the heat source tower is used as an efficient cooling tower, and heat is discharged to the atmosphere through evaporative cooling, so that refrigeration is realized.

Although the existing heat source tower heat pump system has high heat exchange efficiency, the power consumption of the existing heat source tower heat pump system is still high due to the fact that the system of the existing heat source tower heat pump system is large, however, the existing heat source tower heat pump system cannot well realize energy storage, and further the problem that the existing heat source tower heat pump system cannot utilize the electricity utilization low-peak time period to store energy is caused. In addition, the existing heat source tower heat pump system is also provided with a heat storage component, but the existing heat storage component can only be used for storing hot water and cannot utilize heat in the hot water to participate in heat exchange, so that the hot water can only be supplied to a user for direct use; meanwhile, since the hot water can be used only when the temperature reaches over 45 ℃, the available temperature difference is small, so that the heat is wasted.

Accordingly, there is a need in the art for a new heat source tower heat pump system that addresses the above-mentioned problems.

Disclosure of Invention

In order to solve the above-mentioned problems in the prior art, that is, to solve the problem that the energy saving effect is not good due to the fact that the heat in the heat storage component cannot be well utilized to participate in heat exchange in the existing heat source tower heat pump system, the present invention provides a heat source tower heat pump system, the heat source tower heat pump system comprises a refrigerant circulation loop, a heat supply loop and a heat source tower circulation loop, a compressor, a four-way valve, a first heat exchanger, a second heat exchanger, a third heat exchanger and a throttling component are arranged on the refrigerant circulation loop, an air inlet of the compressor is connected with a first valve port of the four-way valve, an air outlet of the compressor is connected with a second valve port of the four-way valve, the first heat exchanger is arranged between the air outlet of the compressor and the second valve port of the four-way valve, the second heat exchanger is connected with a third valve port of the four, the throttling component is arranged between the second heat exchanger and the third heat exchanger, a heat supply pump is arranged on the heat supply loop to realize circulation, the heat supply loop comprises a first heat exchange branch and a second heat exchange branch which are arranged in parallel, the first heat exchange branch exchanges heat with the refrigerant circulating loop through the first heat exchanger, the second heat exchange branch exchanges heat with the refrigerant circulation loop through the second heat exchanger, the heat supply loop also comprises a heat storage branch connected with the second heat exchange branch, the heat storage branch is provided with a heat storage component and a heat storage pump, two ends of the heat storage branch are respectively connected to two sides of the second heat exchanger, and the heat source tower circulating loop is provided with a heat source tower heat exchanger and a coolant pump, and exchanges heat with the coolant circulating loop through the third heat exchanger.

In a preferred technical solution of the heat source tower heat pump system, the heat supply loop further includes a connecting branch, one end of the connecting branch is connected to the second heat exchanging branch, and the other end of the connecting branch is connected between the heat storage member and the heat storage pump.

In the preferable technical scheme of the heat source tower heat pump system, valves for controlling the on-off of the heat storage branches are arranged at two ends of the heat storage branches.

In the preferable technical scheme of the heat source tower heat pump system, a valve for controlling the connection branch to be on or off is arranged on the connection branch.

In a preferred technical solution of the heat source tower heat pump system, the heat supply pump includes a plurality of sub heat supply pumps arranged in parallel; and/or the coolant pump comprises a plurality of sub-coolant pumps arranged in parallel; and/or the heat storage pump comprises a plurality of sub heat storage pumps arranged in parallel.

In the preferable technical scheme of the heat source tower heat pump system, a valve for controlling the on-off of the first heat exchange branch is arranged on the first heat exchange branch, and/or a valve for controlling the on-off of the second heat exchange branch is arranged on the second heat exchange branch.

In the preferable technical solution of the heat source tower heat pump system, a bridge branch, a first check valve, a second check valve, a third check valve and a fourth check valve are further arranged between the second heat exchanger and the third heat exchanger, wherein the first and third check valves are arranged in parallel with the second and fourth check valves, and the first check valve and the third check valve are arranged in opposite directions, and the second check valve and the fourth check valve are arranged in opposite directions, the first one-way valve and the fourth one-way valve are arranged in the same direction, one end of the bridging branch is connected between the first one-way valve and the third one-way valve, the other end of the bridge branch is connected between the second check valve and the fourth check valve, and the throttle member is provided on the bridge branch.

In a preferred embodiment of the heat source tower heat pump system, the throttling member is a throttle valve.

In the preferred technical scheme of the heat source tower heat pump system, a part of the refrigerant circulation loop and a part of the first heat exchange branch are both arranged in the first heat exchanger to realize heat exchange; and/or a part of the refrigerant circulation loop and a part of the second heat exchange branch are arranged in the second heat exchanger to realize heat exchange; and/or a part of the refrigerant circulation loop and a part of the heat source tower circulation loop are arranged in the third heat exchanger to realize heat exchange.

In the preferable technical scheme of the heat source tower heat pump system, a liquid collector and a liquid separator are further arranged on a main pipeline of the heat supply loop so as to realize multi-end heat supply.

As can be understood by those skilled in the art, in the technical solution of the present invention, the heat source tower heat pump system of the present invention includes a refrigerant circulation loop, a heat supply loop and a heat source tower circulation loop, a compressor, a four-way valve, a first heat exchanger, a second heat exchanger, a third heat exchanger and a throttling component are disposed on the refrigerant circulation loop, an air inlet of the compressor is connected to a first valve port of the four-way valve, an air outlet of the compressor is connected to a second valve port of the four-way valve, the first heat exchanger is disposed between the air outlet of the compressor and the second valve port of the four-way valve, the second heat exchanger is connected to a third valve port of the four-way valve, the third heat exchanger is connected to a fourth valve port of the four-way valve, the throttling component is disposed between the second heat exchanger and the third heat exchanger, and a heat supply pump is disposed, the heat supply loop comprises a first heat exchange branch and a second heat exchange branch which are arranged in parallel, the first heat exchange branch exchanges heat with the refrigerant circulation loop through the first heat exchanger, the second heat exchange branch exchanges heat with the refrigerant circulation loop through the second heat exchanger, the heat supply loop further comprises a heat storage branch connected with the second heat exchange branch, a heat storage component and a heat storage pump are arranged on the heat storage branch, two ends of the heat storage branch are respectively connected to two sides of the second heat exchanger, a heat source tower heat exchanger and a refrigerant carrying pump are arranged on the heat source tower circulation loop, and the heat source tower circulation loop exchanges heat with the refrigerant circulation loop through the third heat exchanger. According to the invention, the first heat exchanger is additionally arranged between the exhaust port of the compressor and the second valve port of the four-way valve, so that different heat exchange paths can be correspondingly selected when the heat source tower heat pump system operates in different modes, and the heat exchange efficiency is effectively improved; meanwhile, the heat storage capacity of the heat source tower heat pump system is effectively improved by additionally arranging the heat storage branch so as to effectively utilize electric energy in a low-peak period of electricity utilization to store energy, thereby effectively reducing the operation cost of the system and further improving the economy of the system; in addition, the heat stored in the heat storage component can be utilized through the second heat exchanger, so that the heat in the low-temperature hot water can be effectively utilized, the heat stored in the heat storage component can participate in heat exchange as much as possible, the heat utilization efficiency of the whole system can be effectively improved to achieve the purpose of energy saving, the volume of the heat storage component can be correspondingly reduced, the heat utilization capacity of the whole system can be comprehensively improved, and the energy efficiency of the whole system can be greatly improved.

Drawings

FIG. 1 is a schematic overall block diagram of a preferred embodiment of a heat source tower heat pump system of the present invention;

reference numerals:

101. a compressor; 102. a four-way valve; 103. a first heat exchanger; 104. a second heat exchanger; 105. a third heat exchanger; 106. a throttle valve; 107. a first check valve; 108. a second one-way valve; 109. a third check valve; 110. a fourth check valve;

201. a heat supply pump; 202. a water collector; 203. a water separator; 211. a heat storage member; 212. a heat storage pump; 213. a first shut-off valve; 214. a second shutoff valve; 215. a third shutoff valve; 216. a fourth shutoff valve; 217. a fifth shutoff valve; 221. a sixth shutoff valve;

301. a heat source tower heat exchanger; 302. a coolant pump.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications. For example, the invention is not limited to the specific type of the heat source tower heat pump system, and the skilled person can set the heat source tower heat pump system according to the actual use requirement. Such changes do not depart from the basic concept of the invention and are intended to be within the scope of the invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Reference is first made to fig. 1, which is a schematic diagram of the overall configuration of a preferred embodiment of the heat source tower heat pump system of the present invention. As shown in fig. 1, the heat source tower heat pump system of the present invention includes a refrigerant circulation loop, a heat supply loop and a heat source tower circulation loop, wherein a refrigerant circulates in the refrigerant circulation loop, and a secondary refrigerant circulates in the heat supply loop and the heat source tower circulation loop; it should be noted that the present invention does not limit the specific types of refrigerants and coolant used in the present invention, and the skilled person can select them according to the actual use requirement, and preferably, the coolant used in the heating circuit is water, so as to achieve both the use cost and the safety performance.

Specifically, the refrigerant circulation circuit is provided with a compressor 101, a four-way valve 102, a first heat exchanger 103, a second heat exchanger 104, a third heat exchanger 105 and a throttle valve 106, wherein an air inlet port (i.e., a port located at a lower side in fig. 1) of the compressor 101 is connected to a first valve port (i.e., a valve port located at a lower side in fig. 1) of the four-way valve 102, an air outlet port (i.e., a port located at an upper side in fig. 1) of the compressor 101 is connected to a second valve port (i.e., a valve port located at an upper side in fig. 1) of the four-way valve 102, the first heat exchanger 103 is disposed between the air outlet port of the compressor 101 and the second valve port of the four-way valve 102, the second heat exchanger 104 is connected to a third valve port (i.e., a valve port located at a left side in fig. 1) of the four-way valve 102, the third heat exchanger 105 is connected to. It should be noted that the present invention does not limit the specific structure of each element disposed on the refrigerant circulation loop, and the technicians can set the structure according to the actual use requirements; for example, the compressor 101 may be an inverter compressor or a fixed frequency compressor; in addition, although the throttling member used in the preferred embodiment is a throttling valve, this is not restrictive, and the skilled person can set the throttling member according to the actual use requirement as long as the throttling member has a throttling effect.

Further, a heat supply pump 201 is arranged on a main pipeline of the heat supply loop to realize water circulation, the heat supply loop further comprises a first heat exchange branch and a second heat exchange branch which are arranged in parallel, wherein the first heat exchange branch exchanges heat with the refrigerant circulation loop through a first heat exchanger 103, and the second heat exchange branch exchanges heat with the refrigerant circulation loop through a second heat exchanger 104; the heat supply loop further comprises a heat storage branch connected with the second heat exchange branch, a heat storage member 211 and a heat storage pump 212 are arranged on the heat storage branch, and two ends of the heat storage branch are respectively connected to two sides of the second heat exchanger 104, so that the heat storage branch and the second heat exchange branch therebetween can form a loop. It should be noted that, the invention does not limit the specific structure of each element arranged on the heat supply loop and the specific position of the connection of the two ends of the heat supply loop, and the technical personnel can set the structure according to the actual use requirement; for example, the heat storage member 211 may adopt a water tank structure or a water reservoir structure, and a technician may set the specific type of the heat storage pump 212 according to the actual use requirement, which is not restrictive.

In addition, a heat source tower heat exchanger 301 and a coolant carrying pump 302 are arranged on the heat source tower circulation loop, a heat source tower heat exchange fan is arranged near the heat source tower heat exchanger 301 so as to improve the heat exchange effect of the heat source tower heat exchanger 301 and air, and the heat source tower circulation loop exchanges heat with the coolant circulation loop through a third heat exchanger 105. In addition, it should be noted that, the invention does not limit the specific structure of each element arranged on the heat source tower circulation loop, and the technical personnel can set the structure according to the actual use requirement; for example, the technician may set the specific type of heat source tower heat exchanger 301 or the specific type of coolant pump 302 according to the actual use requirement.

With continued reference to fig. 1, as shown in fig. 1, in the preferred embodiment, a bridge branch, a first check valve 107, a second check valve 108, a third check valve 109 and a fourth check valve 110 are further disposed between the second heat exchanger 104 and the third heat exchanger 105, wherein the first check valve 107 and the third check valve 109 are arranged in parallel with the second check valve 108 and the fourth check valve 110, and the first check valve 107 and the third check valve 109 are disposed in the opposite directions, the second check valve 108 and the fourth check valve 110 are disposed in the opposite directions, the first check valve 107 and the fourth check valve 110 are disposed in the same direction, the second check valve 108 and the third check valve 109 are disposed in the same direction, the upper end of the bridge branch is connected between the first non return valve 107 and the third non return valve 109, the lower end of the bridge branch is connected between a second check valve 108 and a fourth check valve 110, and a throttle valve 106 is arranged on the bridge branch. It should be noted that, although the second heat exchanger 104 and the third heat exchanger 105 are described in the preferred embodiment as having a bridge branch and four check valves disposed therebetween, this is not limiting, and the skilled person may also achieve different flow directions in other manners; for example, by providing two parallel branches, and providing one check valve and one throttle valve on each branch.

Furthermore, a water collector 202 and a water distributor 203 are further arranged on a main pipeline of the heat supply loop, the heat supply loop conveys water to a plurality of heat exchange spaces through the water distributor 203 to realize heat exchange, and then the water is recycled through the water distributor 203, so that the effect of multi-end heat exchange is effectively realized; of course, the technical staff can set the specific structures of the water collector 202 and the water separator 203 according to the actual use requirement, as long as the water collector 202 can realize the water collecting function and the water separator 203 can realize the water separating function. Heat supply pump 201 sets up in the low reaches of water collector 202 to provide sufficient circulation power, as an optimal setting mode, the heat supply pump 201 that has adopted three parallelly connected settings in this preferred embodiment provides power, in its use, the technical staff can set for heat supply pump 201's use number by oneself according to the in-service use demand, so that satisfy different heat transfer demands, adopt two heat supply pump 201 mode of concurrent operation to supply heat usually, and another heat supply pump 201 is then as reserve. It should be noted that this is only a preferable setting manner, and a technician may set the number and setting manner of the heat supply pumps 201 according to actual use requirements.

In addition, a first shutoff valve 213 and a second shutoff valve 214 are further arranged at two ends of the heat storage branch, and the heat storage member 211 and the heat storage pump 212 are arranged between the first shutoff valve 213 and the second shutoff valve 214. As a preferable arrangement, in the preferred embodiment, two heat storage pumps 212 arranged in parallel are used for providing power, and in the using process, a technician can set the number of the heat storage pumps 212 to be used according to actual use requirements, so as to meet different heat exchange requirements, and usually, one heat storage pump 212 is operated while the other heat storage pump 212 is in standby use. Of course, the technician may set the number and the installation mode of the heat storage pumps 212 according to the actual use requirement. In addition, it should be noted that, although the on-off control of the pipeline is realized by providing the shut-off valve in the preferred embodiment, this is not restrictive, and the technician may set other ways of controlling the on-off of the pipeline according to the actual use requirement, which is not restrictive.

Further, the heat supply loop further comprises a connecting branch, the left end of the connecting branch is connected to the second heat exchange branch, the right end of the connecting branch is connected between the heat storage member 211 and the heat storage pump 212, and a third shut-off valve 215 is further arranged on the connecting branch so as to control the on-off state of the connecting branch, so that more pipeline communication modes are effectively provided to adapt to different use requirements. Meanwhile, a part of pipelines of the second heat exchange branch between two connection points of the heat storage branch and the second heat exchange branch are arranged in the second heat exchanger 104, and a part of pipelines of the refrigerant circulation loop are also arranged in the second heat exchanger 104, so that the heat exchange efficiency of the second heat exchange branch and the refrigerant circulation loop is effectively improved. It should be noted that, the present invention does not limit the specific structure of the second heat exchanger 104, and a skilled person may set the specific structure according to actual requirements, as long as the second heat exchange branch and the refrigerant circulation loop can exchange heat through the second heat exchanger 104. And a fourth shutoff valve 216 and a fifth shutoff valve 217 are further arranged on the second heat exchange branch, wherein the fourth shutoff valve 216 is arranged between the lower connection point of the heat storage branch and the second heat exchange branch and the connection point of the connection branch and the second heat exchange branch, and the fifth shutoff valve 217 is arranged on the upstream side of the second heat exchange branch so as to better control the operation of the whole heat source tower heat pump system.

In addition, a sixth shutoff valve 221 is disposed on the first heat exchange branch, a part of the pipeline of the first heat exchange branch located on the downstream side of the sixth shutoff valve 221 is disposed in the first heat exchanger 103, and a part of the pipeline of the refrigerant circulation loop is also disposed in the first heat exchanger 103, so as to effectively improve the heat exchange efficiency of the first heat exchange branch and the refrigerant circulation loop. It should be noted that, the present invention does not limit the specific structure of the first heat exchanger 103, and a skilled person may set the specific structure according to actual use requirements, as long as the first heat exchange branch and the refrigerant circulation loop can exchange heat through the first heat exchanger 103.

With reference to fig. 1, as shown in fig. 1, further, a part of the pipeline of the heat source tower circulation loop is disposed in the third heat exchanger 105, and a part of the pipeline of the refrigerant circulation loop is also disposed in the third heat exchanger 105, so as to effectively improve the heat exchange efficiency of the heat source tower circulation loop and the refrigerant circulation loop. It should be noted that, the specific structure of the third heat exchanger 105 is not limited in the present invention, and a skilled person may set the specific structure according to actual use requirements, as long as the heat source tower circulation loop and the refrigerant circulation loop can exchange heat through the third heat exchanger 105. In addition, in the preferred embodiment, two coolant pumps 302 arranged in parallel are used for providing power, and in the using process, a technician can set the number of the coolant pumps 302 according to the actual using requirement so as to meet different heat exchanging requirements, and usually one coolant pump 302 is used for operation while the other coolant pump 302 is used for standby. Of course, the technician can set the number and the arrangement mode of the coolant pumps 302 according to the actual use requirement.

Based on the structure, the heat source tower heat pump system can operate in six different modes, and certainly, the execution time of each mode is not limited, technicians can set the operation according to actual use requirements, and the energy-saving effect can be effectively achieved. Specifically, the six operating modes are as follows:

heating mode of the heat source tower: when the heat source tower is operated in the heating mode, the first check valve 107, the fourth check valve 110 and the sixth shutoff valve 221 are opened, the second check valve 108, the third check valve 109, the first shutoff valve 213, the second shutoff valve 214, the third shutoff valve 215, the fourth shutoff valve 216 and the fifth shutoff valve 217 are closed, and the heat source tower heat exchange fan is started. Under the condition, the high-temperature and high-pressure gaseous refrigerant discharged from the exhaust port of the compressor 101 firstly enters the first heat exchanger 103 for condensation, then sequentially flows through the second heat exchanger 104, the fourth one-way valve 110, the throttle valve 106 and the first one-way valve 107 through the four-way valve 102, then enters the third heat exchanger 105 and is evaporated into gaseous refrigerant, and finally returns to the compressor 101 through the four-way valve 102 to realize circulation; at this time, water in the heat supply loop flows through the first heat exchange branch through the sixth shutoff valve 221 under the action of the heat supply pump 201, and exchanges heat with the refrigerant circulation loop through the first heat exchanger 103 so as to absorb heat emitted when the refrigerant is condensed, and then hot water is output through the water separator 203 for users to use; the coolant in the heat source tower heat exchanger 301 circulates under the action of the coolant pump 302, exchanges heat with the coolant in the coolant circulation loop when flowing through the third heat exchanger 105 to release heat, so as to improve the evaporation effect of the coolant, and finally returns to the heat source tower heat exchanger 301 to continuously absorb heat in the air to realize circulation.

A heat source tower refrigeration mode: when the heat source tower is operated in the cooling mode, the second one-way valve 108, the third one-way valve 109, the fourth shutoff valve 216 and the fifth shutoff valve 217 are opened firstly, the first one-way valve 107, the fourth one-way valve 110, the first shutoff valve 213, the second shutoff valve 214, the third shutoff valve 215 and the sixth shutoff valve 221 are closed, and the heat source tower heat exchange fan is started. In this case, the high-temperature and high-pressure gaseous refrigerant discharged from the exhaust port of the compressor 101 first flows through the first heat exchanger 103, then flows into the third heat exchanger 105 through the four-way valve 102 to be condensed, then sequentially flows through the second check valve 108, the throttle valve 106 and the third check valve 109, then enters the second heat exchanger 104 and is evaporated into a gaseous refrigerant, and finally returns to the compressor 101 through the four-way valve 102 to realize circulation; at this time, the water in the heat supply loop flows through the fourth shutoff valve 216, the second heat exchanger 104 and the fifth shutoff valve 217 in sequence under the action of the heat supply pump 201, and then flows through the second heat exchange branch so as to be cooled by the second heat exchanger 104, and then the cold water is output through the water separator 203 for the user to use; the coolant in the heat source tower heat exchanger 301 circulates under the action of the coolant pump 302, exchanges heat with the coolant in the coolant circulation loop when flowing through the third heat exchanger 105, so as to improve the condensation effect of the coolant, and finally returns to the heat source tower heat exchanger 301 to release heat to the air to realize circulation.

Heat source tower heat storage mode: when the heat source tower is operated in the heat storage mode, the first check valve 107, the fourth check valve 110, the first shutoff valve 213 and the second shutoff valve 214 are opened, the second check valve 108, the third check valve 109, the third shutoff valve 215, the fourth shutoff valve 216, the fifth shutoff valve 217 and the sixth shutoff valve 221 are closed, and the heat source tower heat exchange fan is started. In this case, the high-temperature and high-pressure gaseous refrigerant discharged from the discharge port of the compressor 101 first flows through the first heat exchanger 103, then flows through the second heat exchanger 104 for condensation through the four-way valve 102, then flows through the fourth one-way valve 110, the throttle valve 106 and the first one-way valve 107 in sequence, then enters the third heat exchanger 105 and is evaporated into a gaseous refrigerant, and finally returns to the compressor 101 through the four-way valve 102 to realize circulation; at this time, water in the heat supply loop is circulated under the action of the heat supply pump 201 to continuously flow through the second heat exchanger 104, so that heat released during condensation of the refrigerant is absorbed and heated, and heat storage is further realized; the coolant in the heat source tower heat exchanger 301 circulates under the action of the coolant pump 302, exchanges heat with the coolant in the coolant circulation loop when flowing through the third heat exchanger 105 to release heat, so as to improve the evaporation effect of the coolant, and finally returns to the heat source tower heat exchanger 301 to continuously absorb heat in the air to realize circulation.

And (3) a heat source tower cold storage mode: when the heat source tower cold storage mode is operated, the second one-way valve 108, the third one-way valve 109, the first shutoff valve 213 and the second shutoff valve 214 are opened first, the first one-way valve 107, the fourth one-way valve 110, the third shutoff valve 215, the fourth shutoff valve 216, the fifth shutoff valve 217 and the sixth shutoff valve 221 are closed, and the heat source tower heat exchange fan is started. In this case, the high-temperature and high-pressure gaseous refrigerant discharged from the discharge port of the compressor 101 first flows through the first heat exchanger 103, then flows through the four-way valve 102 into the third heat exchanger 105 for condensation, then sequentially flows through the second check valve 108, the throttle valve 106 and the third check valve 109, then enters the second heat exchanger 104 and is evaporated into a gaseous refrigerant, and finally returns to the compressor 101 through the four-way valve 102 to realize circulation; at this time, the water in the heat supply loop is circulated under the action of the heat supply pump 201 to continuously flow through the second heat exchanger 104, so that the cold energy released when the refrigerant is evaporated is absorbed to be cooled, and further, cold storage is realized; the coolant in the heat source tower heat exchanger 301 circulates under the action of the coolant pump 302, exchanges heat with the coolant in the coolant circulation loop when flowing through the third heat exchanger 105, so as to improve the condensation effect of the coolant, and finally returns to the heat source tower heat exchanger 301 to release heat to the air to realize circulation.

And (3) a water source heating mode: when the water source heating mode is operated, the second one-way valve 108, the third one-way valve 109, the first shutoff valve 213, the second shutoff valve 214 and the sixth shutoff valve 221 are opened firstly, the first one-way valve 107, the fourth one-way valve 110, the third shutoff valve 215, the fourth shutoff valve 216 and the fifth shutoff valve 217 are closed, and the heat source tower heat exchange fan is closed. Under the condition, the high-temperature and high-pressure gaseous refrigerant discharged from the exhaust port of the compressor 101 firstly enters the first heat exchanger 103 for condensation, then flows through the third heat exchanger 105 through the four-way valve 102, then sequentially flows through the second one-way valve 108, the throttle valve 106 and the third one-way valve 109, then enters the second heat exchanger 104 and is evaporated into gaseous refrigerant, and finally returns to the compressor 101 through the four-way valve 102 to realize circulation; at this time, water in the heat supply loop flows through the first heat exchange branch through the sixth shutoff valve 221 under the action of the heat supply pump 201, and exchanges heat with the refrigerant circulation loop through the first heat exchanger 103 so as to absorb heat emitted when the refrigerant is condensed, and then hot water is output through the water separator 203 for users to use; under the action of the heat storage pump 212, water in the heat storage member 211 enters the second heat exchanger 104 through the first shutoff valve 213 and releases heat, so that the heat stored in the heat storage member 211 can participate in heat exchange to be effectively utilized, and then returns to the heat storage member 211 through the second shutoff valve 214 to realize circulation.

A water source refrigeration mode: and when the water source cooling mode is operated, opening a third shutoff valve 215, a first shutoff valve 213 and a fifth shutoff valve 217, closing a second shutoff valve 214, a fourth shutoff valve 216 and a sixth shutoff valve 221, and closing the heat source tower heat exchange fan. The refrigerant circulation circuit stops operating, and cold water stored in the heat storage member 211 circulates between the water collector 202 and the water separator 203 through the third shut-off valve 215, the first shut-off valve 213, and the fifth shut-off valve 217, thereby effectively achieving refrigeration.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the accompanying drawings, but it is apparent to those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.