CN221403325U - Ice cold-storage heat pump system - Google Patents

Abstract

The embodiment of the utility model discloses an ice storage heat pump system. The heat pump comprises: the ice-making device comprises a first heat exchanger, a second heat exchanger, an ice-making assembly, a cold accumulation device and a throttling assembly. The throttling component is connected with the first heat exchanger, the second heat exchanger and the ice making component. The heat pump system has a cooling mode, an ice making mode, an ice melting and cooling mode, and a heating mode, and the throttling assembly is further configured to control the flow direction of the refrigerant in the different modes. In the ice making mode, the refrigerant flows from the first heat exchanger to the ice making assembly through the throttling assembly to make the ice making assembly make ice for accumulating cold. In the ice melting and cooling mode, backwater after the air conditioner is cooled enters the cold accumulation device, the ice layer is melted, the cooling capacity is obtained, and the backwater can cool the air conditioning system after leaving. The utility model has the advantages that the ice cold accumulation technology can be utilized, the running cost of an air conditioning system is saved, the indirect heat transfer of the non-freezing liquid circulation is not needed in the ice making mode, and the energy efficiency ratio of a unit and the air conditioning system is improved.

Description

Ice cold-storage heat pump system

Technical Field

The application relates to the technical field of heat pumps, in particular to an ice storage heat pump system.

Background

The ice cold accumulation technology can store cold energy by freezing water when electricity is used at night and low valley, and can melt ice to provide air conditioner for cooling when electricity is used at peak in daytime, so that the purposes of transferring peak power load, improving the primary energy utilization efficiency of a power plant, reducing the running cost of an air conditioner system and improving the quality of the air conditioner are achieved, and the technology is a load-adjusting and energy-saving technology.

The traditional ice storage technology generally adopts the principle of indirect heat exchange ice making. An air conditioner (generally having a refrigerating function, abbreviated as duplex Kuang Zhuji) adopts a refrigerating principle, and utilizes the evaporation of low-temperature liquid refrigerant to absorb heat in an evaporator to produce low-temperature unfrozen liquid (generally about-5.6 ℃ C., the unfrozen liquid is generally glycol water solution) below 0 ℃; then, the non-freezing liquid below 0 ℃ is transported into the ice making coil pipe, and exchanges heat with water outside the coil pipe and inside the cold accumulation device (the ice making coil pipe is generally placed in the cold accumulation device, the cold accumulation device has the functions of heat preservation, cold insulation and heat insulation, a certain amount of water is contained in the cold accumulation device, the water level is generally completely submerged in the ice making coil pipe), so that the water is cooled until freezing, and the cold is stored in an ice form.

Under the refrigerating mode, the double-working-condition host machine needs to exchange heat between the non-freezing liquid and the freezing water at the use side of the air conditioner through the plate heat exchanger, which can lead to the reduction of the evaporation temperature (the saturation temperature of the refrigerant in the evaporator) of the double-working-condition host machine, so that the efficiency of the host machine is reduced, and meanwhile, the operation of the non-freezing liquid pump (generally an ethylene glycol pump) can also bring about power consumption, so that the efficiency of the whole system is further reduced.

The double-working-condition main machine condenser generally adopts a water-cooling type heat exchanger (heat exchange is carried out between refrigerant and cooling water), and as the combination of the water-cooling type condenser and the cooling tower can only realize ice making or refrigerating operation of the unit and can not realize heating operation (without heat source), the winter heating requirement can not be provided for an air conditioning system.

Disclosure of utility model

The main object of the present utility model is to propose a solution to the above-mentioned problems of the prior art.

In order to achieve the above object, the present utility model provides an ice storage heat pump system, comprising:

a first heat exchanger;

A second heat exchanger;

an ice making assembly;

the throttling assembly is connected with the first heat exchanger, the second heat exchanger and the ice making assembly;

The heat pump system has a cooling mode and an ice making mode, the throttle assembly being further configured to control the flow direction of the refrigerant in different modes;

In the cooling mode, the refrigerant flows from the first heat exchanger to the second heat exchanger through the throttling assembly to cool the second heat exchanger;

In the ice making mode, the refrigerant flows from the first heat exchanger to the ice making assembly through the throttling assembly to make the ice making assembly make ice for cold accumulation.

In some embodiments of the present invention, in some embodiments,

The throttling assembly comprises a first throttling interface, a second throttling interface and a third throttling interface;

The first heat exchanger comprises a second heat exchange interface, the second heat exchanger comprises a fourth heat exchange interface, and the ice making assembly comprises a first ice making interface;

The first throttling interface is connected with the second heat exchange interface, the second throttling interface is connected with the fourth heat exchange interface, and the third throttling interface is connected with the first ice making interface;

The throttling assembly is configured to control flow of the refrigerant from the first throttling interface to the second throttling interface in the cooling mode and to control flow of the refrigerant from the first throttling interface to the third throttling interface in the ice making mode.

In some embodiments of the present invention, in some embodiments,

The throttle assembly further includes a first throttle member and a second throttle member; the first throttling interface is connected with the second throttling interface through the first throttling component, and the first throttling interface is connected with the third throttling interface through the second throttling component; in the refrigeration mode, the first throttling interface is communicated with an inlet of the first throttling component, and an outlet of the first throttling component is communicated with the second throttling interface; in the ice making mode, the first throttling interface is communicated with an inlet of the second throttling component, and an outlet of the second throttling component is communicated with the third throttling interface; or (b)

The throttle assembly further comprises a third throttle member, a first valve and a second valve; after passing through the third throttling part, the first throttling interface is connected with the second throttling interface through the first valve and is connected with the third throttling interface through the second valve respectively; in the refrigeration mode, the first throttling interface is communicated with an inlet of the third throttling component, and an outlet of the third throttling component is communicated with the second throttling interface through the first valve; in the ice making mode, the first throttling interface is communicated with the inlet of the third throttling component, and the outlet of the third throttling component is communicated with the third throttling interface through the second valve.

In some embodiments of the present invention, in some embodiments,

The first heat exchanger comprises a fin type heat exchanger and a fan;

The heat pump system also has a heating mode;

In the heating mode, the refrigerant flows from the second heat exchanger to the first heat exchanger through the throttling assembly, so that the second heat exchanger supplies heat outwards.

In some embodiments of the present invention, in some embodiments,

The heat pump system further comprises a liquid reservoir and a dry filter;

the reservoir and the filter drier are sequentially disposed upstream of the throttling assembly.

In some embodiments of the present invention, in some embodiments,

The throttle assembly further comprises a fourth throttle interface;

The first heat exchanger is provided with a second heat exchange interface, the second heat exchanger is provided with a fourth heat exchange interface, and the ice making assembly is provided with a first ice making interface;

In the refrigeration mode, the second heat exchange interface is in one-way communication with the inlet of the liquid storage device, the outlet of the liquid storage device is communicated with the first throttling interface through the drying filter, the throttling assembly controls the first throttling interface to be communicated with the second throttling interface, and the second throttling interface is in one-way communication with the fourth heat exchange interface;

In the ice making mode, the second heat exchange interface is in one-way communication with the inlet of the liquid storage device, the outlet of the liquid storage device is communicated with the first throttling interface through the drying filter, the throttling assembly controls the first throttling interface to be communicated with the third throttling interface, and the third throttling interface is communicated with the first ice making interface;

In the heating mode, the fourth heat exchange interface is in one-way communication with the inlet of the liquid reservoir, the outlet of the liquid reservoir is communicated with the first throttling interface through the drying filter, and the fourth throttling interface is in one-way communication with the second heat exchange interface.

In some embodiments of the present invention, in some embodiments,

When the throttle assembly includes a first throttle member and a second throttle member: the throttling assembly further comprises a fourth throttling component, and the first throttling interface is connected with the fourth throttling interface after passing through the fourth throttling component; in the heating mode, the first throttling interface is communicated with an inlet of the fourth throttling component, and an outlet of the fourth throttling component is communicated with the fourth throttling interface;

When the throttle assembly includes a third throttle member: the first throttling interface is connected with the fourth throttling interface after passing through the third throttling component, and in the heating mode, the first throttling interface is communicated with an inlet of the third throttling component, and an outlet of the third throttling component is communicated with the fourth throttling interface; or the throttling assembly further comprises a fourth throttling component, the first throttling interface is connected with the fourth throttling interface after passing through the fourth throttling component, in the heating mode, the first throttling interface is communicated with the inlet of the fourth throttling component, and the outlet of the fourth throttling component is communicated with the fourth throttling interface.

In some embodiments of the present invention, in some embodiments,

When the throttling assembly comprises a fourth throttling component, the fourth throttling component is a throttling component capable of closing flow to zero, and the fourth throttling interface is in bidirectional communication with the second heat exchange interface; and/or

When the throttling assembly comprises a first throttling component, the first throttling component is a throttling component capable of closing flow to zero, and the second throttling interface is in bidirectional communication with the fourth heat exchange interface.

In some embodiments of the present invention, in some embodiments,

The heat pump system further comprises a four-way reversing valve;

the first heat exchanger further comprises a first heat exchange port, and the second heat exchanger further comprises a third heat exchange port;

The four-way reversing valve comprises a first valve port, a second valve port, a third valve port and a fourth valve port; the first valve port is used as an inlet of the high-temperature high-pressure gaseous refrigerant circulating in the ice storage heat pump system, the second valve port is connected with the first heat exchange port, the third valve port is used as an outlet of the low-temperature low-pressure gaseous refrigerant circulating in the ice storage heat pump system, and the fourth valve port is connected with the third heat exchange port;

the first valve port is communicated with the second valve port, and the third valve port is communicated with the fourth valve port in the refrigeration mode and the ice making mode;

In the heating mode, the first valve port is communicated with the fourth valve port, and the second valve port is communicated with the third valve port.

In some embodiments of the present invention, in some embodiments,

The heat pump system further comprises a compressor;

an outlet of the compressor is connected with the first valve port;

The third valve opening passes through an inlet of the compressor through a first air return valve, and the first air return valve comprises one of a one-way valve and an electric valve; or the third valve port is directly connected with the inlet of the compressor;

The ice making assembly is connected with the inlet of the compressor through a second air return valve, and the second air return valve comprises one of a one-way valve and an electric valve.

In some embodiments of the present invention, in some embodiments,

The heat pump system further comprises a compressor;

in the refrigeration mode and the ice making mode, an outlet of the compressor is connected with the first heat exchanger;

In the refrigeration mode, the second heat exchanger is connected with an inlet of the compressor through a first air return valve, and the first air return valve comprises one of a one-way valve and an electric valve; or the second heat exchanger is directly connected with the inlet of the compressor;

In the ice making mode, the ice making assembly is connected with the inlet of the compressor through a second air return valve, and the second air return valve comprises one of a one-way valve and an electric valve.

In some embodiments of the present invention, in some embodiments,

The heat pump system also comprises an oil separator and a gas-liquid separator;

The oil separator is connected with the outlet of the compressor, the first heat exchanger and the gas-liquid separator, so as to separate the refrigerant and the lubricating oil and then respectively send the separated refrigerant and lubricating oil into the first heat exchanger and the gas-liquid separator correspondingly;

The gas-liquid separator is connected with the second heat exchanger, is connected with the ice making assembly through the second air return valve and is connected with an inlet of the compressor so as to send the lubricating oil and the refrigerant into the compressor.

In some embodiments of the present invention, in some embodiments,

The heat pump system also comprises an oil separator and a gas-liquid separator;

The oil separator is connected with the outlet of the compressor, the first valve port of the four-way reversing valve and the gas-liquid separator, so that after the refrigerant and the lubricating oil are separated, the refrigerant is sent to the first heat exchanger or the second heat exchanger through the four-way reversing valve, and the lubricating oil is sent to the gas-liquid separator;

The gas-liquid separator is connected with an inlet of the compressor and an oil outlet of the oil separator, is connected with a third valve opening of the four-way reversing valve through the first air return valve and is connected with the ice making assembly through the second air return valve so as to send the lubricating oil and the refrigerant into the compressor.

In some embodiments of the present invention, in some embodiments,

The heat pump system also comprises a cold accumulation device and a water pump;

The ice making assembly is arranged in the cold accumulation device, water is contained in the cold accumulation device, and the ice making assembly is submerged by the water level;

The ice making assembly comprises a plurality of coil heat exchangers and is used for making ice from water in the cold accumulation device and accumulating cold in the ice making mode;

The cold accumulation device is internally provided with a water distributor and a water collector, and the water distributor and the water collector are respectively arranged at two sides of the ice making assembly;

The ice storage heat pump system is also provided with an ice melting mode;

In the ice melting mode, the water flow of the air conditioning system after using the cold energy is conveyed by the water pump to enter the cold accumulation device through the water distributor to melt ice and form ice water, and the ice water flows out through the water collector and is used for continuously cooling the air conditioning system.

The ice storage heat pump system provided by the application adopts a direct evaporation type ice making principle, and low-temperature gas-liquid mixed refrigerant in the refrigerant cycle directly enters the ice making assembly under the control of the throttling assembly. The ice making assembly is arranged in the cold accumulation device, a certain amount of water (the water level submerges the ice making coil pipe) is also contained in the cold accumulation device, the low-temperature gas-liquid mixed refrigerant evaporates and absorbs heat, and the heat of the water outside the coil pipe and in the cold accumulation device is directly absorbed, so that the water is cooled until the water is frozen, and the cold is stored in the cold accumulation device. The ice storage heat pump system omits the circulation of non-freezing liquid (such as glycol), reduces the heat exchange times, and can improve the energy efficiency ratio of a unit and a system in an ice making mode.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

The methods, systems, and/or programs in the accompanying drawings will be described further in terms of exemplary embodiments. These exemplary embodiments will be described in detail with reference to the drawings. These exemplary embodiments are non-limiting exemplary embodiments, wherein reference numerals represent similar mechanisms throughout the several views of the drawings.

Fig. 1 is a schematic structural diagram of an ice thermal storage pump system according to some embodiments of the present application;

Fig. 2 is a schematic circulation diagram of a refrigerant liquid of the ice storage heat pump system according to some embodiments of the present application in a refrigeration mode;

Fig. 3 is a schematic circulation diagram of a refrigerant fluid of an ice storage heat pump system according to some embodiments of the present application in an ice making mode;

fig. 4 is a schematic circulation diagram of a refrigerating fluid of an ice storage heat pump system according to some embodiments of the present application in a heating mode;

FIG. 5 is an alternative block diagram of portion A of FIG. 1 in accordance with some embodiments of the present application;

Fig. 6 is a schematic structural diagram of an ice thermal storage pump system according to further embodiments of the present application;

FIG. 7 is an alternative block diagram of portion B of FIG. 1 in accordance with some embodiments of the present application;

FIG. 8 is an alternative block diagram of portion B of FIG. 1 in accordance with further embodiments of the present application;

FIG. 9 is an alternative block diagram of portion B of FIG. 1 in accordance with further embodiments of the present application;

FIG. 10 is an alternative block diagram of portion C of FIGS. 8 and 9 in accordance with some embodiments of the present application;

Fig. 11 is an alternative block diagram of portion D of fig. 9 according to some embodiments of the application.

Icon: 1-compressor, a-inlet, b-outlet, 2-four-way reversing valve, d-first valve port, c-second valve port, s-third valve port, e-fourth valve port, 3-first heat exchanger, 3.1-fin heat exchanger, 3.2-fan, f-first heat exchange interface, g-second heat exchange interface, g 2-first throttling interface, g 3-fourth throttling interface, 4-second heat exchanger, h-third heat exchange interface, i-fourth heat exchange interface, i 2-second throttling interface, j-water inlet, k-water outlet, 5-ice making assembly, m-first ice making interface, m 2-third throttling interface, n-second ice making interface, 6-cold storage device, 61-water distributor, 62-water collector a p-ice melting side water return port, a q-ice melting side water intake, a 7-first throttling component, an 8-second throttling component, a 9-first air return valve, a 9.1-first air return check valve, a 10-second air return valve, a 10.1-second air return check valve, a 10.2-second air return electric valve, an 11-oil separator, an r-first air inlet, a t-first air outlet, a u-oil outlet, a 12-gas-liquid separator, an x-second air inlet, a v-oil inlet, a w-second air outlet, a 13-first check valve, a 14-second check valve, a 15-third check valve, a 16-fourth check valve, a 17-reservoir, a y-reservoir inlet, a z-reservoir outlet, an 18-dry filter, 19-third throttling part, 20-first valve, 21-second valve, 22-fourth throttling part.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which a product of the application is conventionally put in use, it is merely for convenience of describing the present application and simplifying the description, and it is not indicated or implied that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like in the description of the present application, if any, are used for distinguishing between the descriptions and not necessarily for indicating or implying a relative importance.

Furthermore, the terms "horizontal," "vertical," and the like in the description of the present application, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

Examples

Fig. 1 is a schematic structural diagram of an ice thermal storage pump system in an embodiment of the application. The ice cold-storage heat pump system comprises a compressor 1, a four-way reversing valve 2, a first heat exchanger 3, a second heat exchanger 4, a throttling assembly, an ice making assembly 5, a cold-storage device 6, a water pump (not shown in the figure), a first air return valve 9 and a second air return valve 10. The heat pump system has four working modes, namely: a cooling mode, an ice making mode, a heating mode and an ice melting mode.

The first heat exchanger 3 has a first heat exchange port f, a second heat exchange port g, one of which is an inlet for the refrigerant to enter the first heat exchanger 3, and the other of which is an outlet for the refrigerant to leave the first heat exchanger 3. Optionally, the first heat exchanger 3 is an air side heat exchanger, and comprises a fin type heat exchanger 3.1 and a fan 3.2, and air is used as a cold source and/or a heat source, so that refrigeration or heating is realized.

The second heat exchanger 4 has a third heat exchange port h, a fourth heat exchange port i, one of which is an inlet for the refrigerant to enter the second heat exchanger 4, and the other of which is an outlet for the refrigerant to leave the second heat exchanger 4. The second heat exchanger 4 serves as a heat exchanger on the temperature supply side. Optionally, the second heat exchanger 4 is a water side heat exchanger, and has a water inlet j and a water outlet k. The water enters the second heat exchanger 4 and leaves the second heat exchanger 4 after heat exchange with the refrigerant, thereby providing an appropriate temperature to the outside.

The ice making assembly 5 has a first ice making interface m as an inlet for the refrigerant into the ice making assembly 5 and a second ice making interface n as an outlet for the refrigerant out of the ice making assembly 5. The second ice making port n of the ice making assembly 5 is connected to the inlet a of the compressor 1 through a pipe. In particular, the ice-making assembly 5 may include a plurality of coil heat exchangers positioned within the cold storage device 6, the cold storage device 6 also containing a quantity of water, the water level flooding the ice-making assembly 5. The heat pump system makes the water in the cold accumulation device 6 into ice through the ice making assembly 5 so as to realize cold accumulation. Specifically, the cold accumulation device 6 is internally provided with a water distributor 61 and a water collector 62, and the water distributor 61 and the water collector 62 are respectively arranged at two sides of the ice making assembly 5. The water collector 62 has an ice-melting side water intake q, and the water distributor 61 has an ice-melting side water return p. The outlet of the water pump is connected with the water return port p of the water distributor 61 on the ice melting side, and the inlet of the water pump is connected with the water intake port q of the water collector 62 on the ice melting side. In the ice melting mode, water after the external air conditioning system uses cold energy is conveyed by a water pump and reaches the water distributor 61 through the water return port p at the ice melting side, the water distributor 61 sprays water on ice cubes in the cold storage device 6, the ice water melted by the ice cubes leaves the cold storage device 6 through the water collector 62 after being collected through the water intake port q at the ice melting side and continuously supplies cold to the external air conditioning system, and the ice water after heat exchange is conveyed back to the cold storage device 6 through the water pump, so that ice melting is circulated.

The four-way reversing valve 2 is provided with a first valve port d, a second valve port c, a third valve port s and a fourth valve port e, and the heat pump system can control and switch the communication or the closure between different valve ports. The first valve port d is connected with an outlet b of the compressor 1 through a pipeline and is used as an inlet of the four-way reversing valve 2 for pressurized refrigerant; the second valve port c is connected with a first heat exchange interface f of the first heat exchanger 3 through a pipeline; the third valve port s is connected with an inlet a of the compressor 1 through a pipeline and is used as an outlet of the depressurized coolant leaving the four-way reversing valve 2; the fourth valve port e is connected with a third heat exchange interface h of the second heat exchanger 4 through a pipeline.

The throttling component is connected with the second heat exchange interface g of the first heat exchanger 3, the fourth heat exchange interface i of the second heat exchanger 4 and the first ice making interface m of the ice making component 5 through pipelines respectively. Specifically, the throttle assembly in the present embodiment includes a first throttle interface g2, a second throttle interface i2, a third throttle interface m2, a first throttle member 7, and a second throttle member 8. The first throttling interface g2 is connected with the second heat exchange interface g of the first heat exchanger 3, the second throttling interface i2 is connected with the fourth heat exchange interface i of the second heat exchanger 4, and the third throttling interface m2 is connected with the first ice making interface m of the ice making assembly 5. The first throttle member 7 is connected between the first throttle interface g2 and the second throttle interface i2, and the second throttle member 8 is connected between the first throttle interface g2 and the third throttle interface m 2. Alternatively, the first throttle member 7 and the second throttle member 8 are throttle members such as an electronic expansion valve. It will be appreciated that the first throttle interface g2, the second throttle interface i2, and the third throttle interface m2 may be part structures that actually exist, such as interface joints between pipes, and the like; the first throttle interface g2, the second throttle interface i2 and the third throttle interface m2 may be component structures which are not actually present, so as to separate the component structures of the throttle assembly (such as the first throttle component 7 and the second throttle component 8) from other component structures of the heat pump system and show the positional connection relationship with each other.

The first return air valve 9 is disposed between the third valve port s and the inlet a of the compressor 1, and the second return air valve 10 is disposed between the second ice making port n of the ice making assembly 5 and the inlet a of the compressor 1. Optionally, the first air return valve 9 and/or the second air return valve 10 comprise one of a one-way valve and an electrically operated valve.

The refrigerant flows in the above-mentioned components of the heat pump system and in the connecting pipes between each other. The throttling assembly is also configured to control the flow direction of the refrigerant in different modes. In the cooling mode, the heat pump system controls the first throttling part 7 to work normally, and the second throttling part 8 is closed so that the refrigerant flows to the second heat exchanger 4, and the second heat exchanger 4 supplies cold outwards. In the ice making mode, the heat pump system controls the first throttling part 7 to be closed, and the second throttling part 8 works normally so that the refrigerant flows to the ice making assembly 5, and the ice making assembly 5 makes ice for accumulating cold. In the heating mode, the heat pump system controls the first throttling part 7 to work normally, and the second throttling part 8 is closed, so that the refrigerant flows to the first heat exchanger 3, and the second heat exchanger 4 supplies heat outwards.

Specifically, as shown in fig. 2, when the heat pump system is operated in the cooling mode, the heat pump system controls the first port d and the second port c of the four-way reversing valve 2 to communicate, and the third port s and the fourth port e to communicate. The high-temperature high-pressure gas refrigerant discharged by the compressor 1 enters the first heat exchanger 3 through the first valve port d, the second valve port c and the first heat exchange interface f, and the fan 3.2 drives air to flow through the fin-type heat exchanger 3.1. The high-temperature high-pressure gas refrigerant radiates heat to the air flowing through the fin type heat exchanger 3.1, and is condensed or cooled into high-pressure liquid refrigerant after releasing heat. The high pressure liquid refrigerant enters the throttling assembly through the second heat exchange interface g. The heat pump system controls the first throttling part 7 to work normally, the second throttling part 8 is closed, so that the refrigerant flows through the first throttling part 7 to form low-temperature low-pressure gas-liquid mixed refrigerant, and the low-temperature low-pressure gas-liquid mixed refrigerant enters the second heat exchanger 4 from the fourth heat exchange interface i; at the same time, the circulating chilled water flows into the second heat exchanger 4 through the water inlet j. The low-temperature low-pressure gas-liquid mixed refrigerant absorbs heat from circulating chilled water, evaporates into low-temperature low-pressure gaseous refrigerant, flows out from the third heat exchange interface h, sequentially passes through the fourth valve port e, the third valve port s and the first air return valve 9 of the four-way reversing valve 2, and returns into the compressor 1 from the inlet a to continue the refrigeration cycle.

In the refrigeration cycle, the low-temperature low-pressure gas-liquid mixed refrigerant evaporates and absorbs the heat of the chilled water in the second heat exchanger 4, so that the purpose of refrigerating and cooling the chilled water is achieved, and the purpose of refrigerating operation is achieved.

As shown in fig. 3, when the heat pump system is operated in the ice making mode, the heat pump system controls the first port d and the second port c of the four-way reversing valve 2 to communicate, and the third port s and the fourth port e to communicate. The high-temperature high-pressure gas refrigerant discharged by the compressor 1 enters the first heat exchanger 3 through the first valve port d, the second valve port c and the first heat exchange interface f, and the fan 3.2 drives air to flow through the fin-type heat exchanger 3.1. The high-temperature high-pressure gas refrigerant radiates heat to the air flowing through the fin type heat exchanger 3.1, and is condensed or cooled into high-pressure liquid refrigerant after releasing heat. The high pressure liquid refrigerant enters the throttling assembly through the second heat exchange interface g. The heat pump system controls the first throttling part 7 to be closed, and the second throttling part 8 works normally, so that the refrigerant flows through the second throttling part 8 to form low-temperature low-pressure gas-liquid mixed refrigerant, and the gas-liquid mixed refrigerant enters the ice making assembly 5 from the first ice making interface m. The low-temperature low-pressure gas-liquid mixed refrigerant absorbs heat from the water in the cold accumulation device 6, evaporates into low-temperature low-pressure gaseous refrigerant and flows out from the second ice making interface n; the water in the cold accumulation device 6 releases heat to the refrigerant and then is frozen for cold accumulation. After flowing out of the second ice making port n, the gaseous refrigerant passes through the second return valve 10 and returns to the compressor 1 from the inlet a, and the ice making cycle is continued.

In the refrigeration cycle, the low-temperature low-pressure gas-liquid mixed refrigerant evaporates in the ice making assembly 5 and absorbs the heat of water in the cold accumulation device 6, so that the water is refrigerated and cooled until freezing is achieved, and the purpose of ice making operation is achieved.

As shown in fig. 4, when the heat pump system is operated in the heating mode, the heat pump system controls the first port d and the fourth port e of the four-way reversing valve 2 to communicate, and the second port c and the third port s to communicate. The high-temperature high-pressure gas refrigerant discharged by the compressor 1 enters the second heat exchanger 4 through the first valve port d, the fourth valve port e and the third heat exchange interface h; at the same time, the circulating chilled water flows into the second heat exchanger 4 through the water inlet j. The high-temperature high-pressure gas refrigerant releases heat to the circulating chilled water, is condensed or cooled into high-pressure liquid refrigerant, and flows out of the fourth heat exchange interface i; the circulating chilled water absorbs heat from the refrigerant and then flows out of the second heat exchanger 4 from the water outlet k to supply heat to the outside. The high-pressure liquid refrigerant enters the throttling assembly through the fourth heat exchange interface i. The heat pump system controls the first throttling part 7 to work normally, and the second throttling part 8 is closed, so that the refrigerant flows through the first throttling part 7 to form low-temperature low-pressure gas-liquid mixed refrigerant, and the low-temperature low-pressure gas-liquid mixed refrigerant enters the first heat exchanger 3 from the second heat exchange interface g. The fan 3.2 drives air through the fin heat exchanger 3.1. The low-temperature low-pressure gas-liquid mixed refrigerant absorbs heat from the flowing air in the fin type heat exchanger 3.1, absorbs the heat, evaporates into low-temperature low-pressure gaseous refrigerant, and flows out from the first heat exchange interface f. After flowing out from the first heat exchange interface f, the gaseous refrigerant sequentially passes through the second valve port c, the third valve port s and the first air return valve 9 of the four-way reversing valve 2, and returns into the compressor 1 from the inlet a, so that the refrigeration cycle is continued.

In the heating cycle, the high-temperature and high-pressure gas refrigerant radiates heat to water in the second heat exchanger 4, so that the heating temperature of the water is raised, and the purpose of heating operation is achieved.

In some embodiments, as shown in fig. 5, the frame a.1, the frame a.2, and the frame a.3 are respectively three different embodiments of the first air return valve 9 and the second air return valve 10, which can replace the frame a in fig. 1. In the box A.1, the first air return valve 9 is omitted, and the second air return valve 10 is the second air return electric valve 10.2; in the box A.2, the first air return valve 9 is a first air return one-way valve 9.1, and the second air return valve 10 is a second air return one-way valve 10.1; in box a.3, the first return air valve 9 is omitted and the second return air valve 10 is the second return air one-way valve 10.1. It will be appreciated that other combinations of the first return valve 9 and the second return valve 10 are possible. Since the ambient temperature of the second heat exchanger 4 is generally higher than that of the ice making assembly 5, the refrigerant pressure in the second heat exchanger 4 is generally higher than that of the ice making assembly 5, and the second air return valve 10 is disposed on the pipeline between the ice making assembly 5 and the inlet a of the compressor 1 in this embodiment, and the second air return valve 10 can be closed in the cooling mode and the heating mode, so as to prevent the refrigerant from entering the ice making assembly 5 during the circulation flow process and exchanging heat with the water in the cold storage device 6, thereby avoiding the reduction of the energy efficiency ratio of the heat pump system. It will be appreciated that since the refrigerant pressure in the second heat exchanger 4 is typically higher than the refrigerant pressure in the ice making assembly 5, in ice making mode, refrigerant will not normally enter the second heat exchanger 4 from the ice making assembly 5, and for this purpose the first return valve 9 between the four-way gas exchange valve 2 and the inlet a of the compressor 1 may be omitted.

As shown in fig. 6, in some embodiments, the ice storage heat pump system further includes an oil separator 11 and a gas-liquid separator 12. The oil separator 11 has a first air inlet r, a first air outlet t, and an oil outlet u. The gas-liquid separator 12 has a second gas inlet x, a second gas outlet w, and an oil inlet v. The first air inlet r of the oil separator 11 is connected with the outlet b of the compressor 1, the first air outlet t is connected with the first valve port d of the four-way reversing valve 2, and the oil outlet u is connected with the oil inlet v of the gas-liquid separator 12. The second air inlet x of the gas-liquid separator 12 is connected with the first air return valve 9 and the second air return valve 10, and the second air outlet w is connected with the inlet a of the compressor 1.

The high-temperature and high-pressure gas refrigerant discharged from the outlet b of the compressor 1 enters the oil separator 11 through the first inlet r. The oil separator 11 separates the refrigerant from the lubricating oil, and the separated gas refrigerant flows out from the first air outlet t and enters the four-way reversing valve 2; the separated lubricating oil flows out from an oil outlet u of the oil separator 11, enters the gas-liquid separator 12 through an oil inlet v, is sucked by the compressor 1 through the second air outlet w together with the gaseous refrigerant entering from the second air inlet x, and returns to the compressor 1, so that the oil quantity safety of the compressor 1 is ensured.

Some embodiments of the application relate to improvements to the block B part of fig. 1, as shown in fig. 7, 8 and 9, the block B part of the heat pump system may be replaced by blocks b.1, b.2, b.3. In order to facilitate comparison of the improvement of the frame B.1-B.3 relative to the frame B and the connection relation with other structures of the heat pump system, the connection points of the frame B, the frame B.1-B.3 and the second heat exchange interface g, the fourth heat exchange interface i and the first ice making interface m are respectively marked as g1, i1 and m1, i.e. g1 indicates that the position is connected with the second heat exchange interface g, i1 indicates that the position is connected with the fourth heat exchange interface i, and m1 indicates that the position is connected with the first ice making interface m. It should be noted that in the embodiment of the heat pump system shown in fig. 1, the portion B is a throttling component, so each of the following three sets of marks is simplified to one: g1 and first throttle interfaces g2, i1 and second throttle interfaces i2, m1 and third throttle interface m2; the blocks b.1-b.3 shown in fig. 7-9 comprise other structures in addition to the throttling assembly, and thus g1 and the first and second and third throttling interfaces g2, i1, i2, m1, m2 are each shown separately.

Referring to fig. 7-9, the heat pump system further includes a liquid storage 17 and a drying filter 18, the second heat exchange interface g is unidirectionally connected to the liquid storage inlet y of the liquid storage 17 through the first check valve 13, and the fourth heat exchange interface i is unidirectionally connected to the liquid storage inlet y of the liquid storage 17 through the third check valve 15. The reservoir outlet z of the reservoir 17 is connected to the first throttling connection g2 of the throttling assembly via a drier-filter 18. The second throttling interface i2 of the throttling assembly is in one-way communication with the fourth heat exchange interface i through the second one-way valve 14. The throttling assembly further comprises a fourth throttling interface g3, and the fourth throttling interface g3 is in one-way communication with the second heat exchange interface g through a fourth one-way valve 16.

In the refrigeration mode, the refrigerant sequentially passes through the first check valve 13, the liquid storage 17 and the dry filter 18 from the second heat exchange interface g of the first heat exchanger 3, and then enters the throttling assembly from the first throttling interface g 2. The throttling assembly controls the first throttling interface g2 to be communicated with the second throttling interface i2, and the second throttling interface i2 of the throttling assembly serves as an outlet of the refrigerant. After leaving the throttling assembly, the refrigerant enters the second heat exchanger 4 from the fourth heat exchange port i through the second non-return valve 14.

In the ice making mode, the refrigerant sequentially passes through the first check valve 13, the liquid storage 17 and the dry filter 18 from the second heat exchange interface g of the first heat exchanger 3, and then enters the throttling assembly from the first throttling interface g 2. The throttle assembly controls the first throttle interface g2 and the third throttle interface m2 to be conducted, and the third throttle interface m2 of the throttle assembly serves as an outlet of the refrigerant. After leaving the throttling assembly, the refrigerant enters the ice making assembly 5 from the first ice making interface m.

In the heating mode, the refrigerant sequentially passes through the third one-way valve 15, the liquid storage 17 and the dry filter 18 from the fourth heat exchange interface i of the second heat exchanger 4, and then enters the throttling assembly from the first throttling interface g 2. The throttling assembly controls the first throttling interface g2 and the fourth throttling interface g3 to be conducted, and the fourth throttling interface g3 of the throttling assembly serves as an outlet of the refrigerant. After leaving the throttling assembly, the refrigerant enters the first heat exchanger 3 from the second heat exchange port g through the fourth one-way valve 16.

Referring to fig. 7-9, the throttling assemblies in the frames b.1-b.3 have different structures and connection relationships, so that the outlets of the refrigerant in the throttling assemblies can be adjusted to be the second throttling interface i2, the third throttling interface m2 and the fourth throttling interface g3 under different working modes of the heat pump system.

As shown in fig. 7, the throttling assembly in block b.1 comprises a third throttling element 19, a first valve 20, a second valve 21. After passing through the third throttling part 19, the first throttling interface g2 is connected with the second throttling interface i2 through a first valve 20, is connected with the third throttling interface m2 through a second valve 21, and is directly connected with the fourth throttling interface g3.

In the refrigeration mode, the third throttling part 19 works normally, the first valve 20 is opened, the second valve 21 is closed, and the refrigerant passes through the third throttling part 19 and the first valve 20 from the first throttling interface g2 to reach the second throttling interface i2. It will be appreciated that in the cooling mode, refrigerant flows from the first heat exchanger 3 to the throttling assembly, and therefore, the refrigerant pressure at the second heat exchange port g is greater than the refrigerant pressure at the fourth throttling port g3, and that refrigerant does not leave the throttling assembly from the fourth throttling port g3 via the fourth one-way valve 16.

In the ice making mode, the third throttling part 19 works normally, the first valve 20 is closed, the second valve 21 is opened, and the refrigerant passes through the third throttling part 19 and the second valve 21 from the first throttling interface g2 to reach the third throttling interface m2.

In the heating mode, the third throttling part 19 works normally, the first valve 20 is closed, the second valve 21 is closed, and the refrigerant passes through the third throttling part 19 from the first throttling interface g2 to the fourth throttling interface g3. It will be appreciated that in the heating mode, refrigerant flows from the second heat exchanger 4 to the throttling assembly, and therefore the refrigerant pressure at the second heat exchange port g is less than the refrigerant pressure at the fourth throttling port g3, and that refrigerant can leave the throttling assembly from the fourth throttling port g3 via the fourth one-way valve 16.

As shown in fig. 8, the throttle assembly in block b.2 comprises a third throttle member 19, a fourth throttle member 22, a first valve 20, a second valve 21. The first throttling interface g2 is connected with the second throttling interface i2 through a third throttling component 19 and a first valve 20 in sequence; the first throttling interface g2 is connected with a third throttling interface m2 through a third throttling component 19 and a second valve 21 in sequence; the first throttle interface g2 is connected to the fourth throttle interface g3 via a fourth throttle element 22.

In the refrigeration mode, the third throttling part 19 works normally, the fourth throttling part 22 is closed, the first valve 20 is opened, the second valve 21 is closed, and the refrigerant passes through the third throttling part 19 and the first valve 20 from the first throttling interface g2 and reaches the second throttling interface i2.

In the ice making mode, the third throttling part 19 works normally, the fourth throttling part 22 is closed, the first valve 20 is closed, the second valve 21 is opened, and the refrigerant passes through the third throttling part 19 and the second valve 21 from the first throttling interface g2 and reaches the third throttling interface m2.

In the heating mode, the third throttling part 19 is closed, the fourth throttling part 22 works normally, the first valve 20 is closed, the second valve 21 is closed, and the refrigerant passes through the fourth throttling part 22 from the first throttling interface g2 to reach the fourth throttling interface g3.

As shown in fig. 9, the throttle assembly in block b.3 comprises a first throttle member 7, a second throttle member 8, a fourth throttle member 22. The first throttle interface g2 is connected to the second throttle interface i2 via the first throttle element 7. The first throttle interface g2 is connected to the third throttle interface m2 via the second throttle element 8. The first throttle interface g2 is connected to the fourth throttle interface g3 via a fourth throttle element 22.

In the cooling mode, the first throttling part 7 works normally, the second throttling part 8 is closed, the fourth throttling part 22 is closed, and the refrigerant passes through the first throttling part 7 from the first throttling interface g2 to reach the second throttling interface i2.

In the ice making mode, the first throttling part 7 is closed, the second throttling part 8 is operated normally, the fourth throttling part 22 is closed, and the refrigerant passes through the second throttling part 8 from the first throttling interface g2 to reach the third throttling interface m2.

In the heating mode, the first throttling part 7 is closed, the second throttling part 8 is closed, the fourth throttling part 22 works normally, and the refrigerant passes through the fourth throttling part 22 from the first throttling interface g2 to reach the fourth throttling interface g3.

It will be appreciated that the circulation flow of refrigerant varies in different modes of operation of the heat pump system, in the same mode of operation, but with varying conditions. When the refrigerant circulation of the heat pump system needs to increase the supply amount of the refrigerant, the accumulator 17 can ensure the supply; the accumulator 17 can store excess refrigerant when the system cycle requires a reduced supply of refrigerant. It should be noted that, since the high-pressure liquid refrigerant is changed into a low-pressure gas-liquid mixed refrigerant after passing through the throttling assembly, the gas-liquid mixed refrigerant is difficult to store in the accumulator 17. In the embodiment of fig. 7-9, the heat pump system takes into account three different modes of operation, namely refrigeration, ice making and heating, while ensuring that the accumulator 17 and the dry filter 18 are always located upstream of the throttling assembly during the circulation of the refrigerant, so that the accumulator 17 can function to store the refrigerant to adapt to the different refrigerant supply requirements.

Referring to fig. 10, fig. 10 is another embodiment of the block C in fig. 8 and 9. In fig. 10, the fourth throttling part 22 is a throttling part such as an electronic expansion valve capable of closing the flow to zero, so that the fourth one-way valve 16, that is, the bidirectional communication between the fourth throttling interface g3 and the second heat exchange interface g, can be eliminated. In the cooling and ice making mode, the control program of the heat pump system completely closes the fourth throttling element 22, so that the refrigerant only enters the throttling assembly through the first one-way valve 13 and does not enter the throttling assembly through the branch where the fourth throttling element 22 is located.

Similarly, referring to fig. 11, fig. 11 is another embodiment of a portion D in fig. 9. In fig. 11, the first throttling part 7 is a throttling part such as an electronic expansion valve capable of closing the flow to zero, so that the second one-way valve 14, namely the two-way communication between the second throttling interface i2 and the fourth heat exchange interface i, can be omitted. In heating mode, the control program of the heat pump system completely closes the first throttling element 7, so that the refrigerant only enters the throttling assembly through the third one-way valve 15 and does not enter the throttling assembly through the branch where the first throttling element 7 is located.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (14)

1. An ice thermal storage pump system, comprising:

A first heat exchanger (3);

a second heat exchanger (4);

An ice-making assembly (5);

a throttling assembly connecting the first heat exchanger (3), the second heat exchanger (4) and the ice making assembly (5);

The heat pump system has a cooling mode and an ice making mode, the throttle assembly being further configured to control the flow direction of the refrigerant in different modes;

In the cooling mode, the refrigerant flows from the first heat exchanger (3) to the second heat exchanger (4) through the throttling assembly so as to cool the second heat exchanger (4) outwards;

In the ice making mode, the refrigerant flows from the first heat exchanger (3) to the ice making assembly (5) through the throttling assembly so as to make the ice making assembly (5) make ice for cold accumulation.

2. The ice thermal storage pump system as claimed in claim 1, wherein,

The throttling assembly comprises a first throttling interface (g 2), a second throttling interface (i 2) and a third throttling interface (m 2);

The first heat exchanger (3) comprises a second heat exchange interface (g), the second heat exchanger (4) comprises a fourth heat exchange interface (i), and the ice making assembly (5) comprises a first ice making interface (m);

the first throttling interface (g 2) is connected with the second heat exchange interface (g), the second throttling interface (i 2) is connected with the fourth heat exchange interface (i), and the third throttling interface (m 2) is connected with the first ice making interface (m);

The throttling assembly is configured to control the flow of the refrigerant from the first throttling interface (g 2) to the second throttling interface (i 2) in the cooling mode and to control the flow of the refrigerant from the first throttling interface (g 2) to the third throttling interface (m 2) in the ice making mode.

3. The ice thermal storage pump system as claimed in claim 2, wherein,

The throttle assembly further comprises a first throttle member (7) and a second throttle member (8); the first throttling interface (g 2) is connected with the second throttling interface (i 2) through the first throttling component (7), and the first throttling interface (g 2) is connected with the third throttling interface (m 2) through the second throttling component (8); in the refrigeration mode, the first throttling interface (g 2) is communicated with an inlet of the first throttling component (7), and an outlet of the first throttling component (7) is communicated with the second throttling interface (i 2); in the ice making mode, the first throttling interface (g 2) is communicated with an inlet of the second throttling component (8), and an outlet of the second throttling component (8) is communicated with the third throttling interface (m 2); or (b)

The throttle assembly further comprises a third throttle member (19), a first valve (20) and a second valve (21); after passing through the third throttling part (19), the first throttling interface (g 2) is connected with the second throttling interface (i 2) through the first valve (20) and is connected with the third throttling interface (m 2) through the second valve (21); in the refrigeration mode, the first throttling interface (g 2) is communicated with an inlet of the third throttling component (19), and an outlet of the third throttling component (19) is communicated with the second throttling interface (i 2) through the first valve (20); in the ice making mode, the first throttling interface (g 2) is communicated with an inlet of the third throttling component (19), and an outlet of the third throttling component (19) is communicated with the third throttling interface (m 2) through the second valve (21).

4. The ice thermal storage pump system as claimed in claim 3, wherein,

The first heat exchanger (3) comprises a fin type heat exchanger (3.1) and a fan (3.2);

The heat pump system also has a heating mode;

in the heating mode, the refrigerant flows from the second heat exchanger (4) to the first heat exchanger (3) through the throttling assembly, so that the second heat exchanger (4) supplies heat outwards.

5. The ice thermal storage pump system as recited in claim 4 wherein,

The heat pump system further comprises a liquid reservoir (17) and a dry filter (18);

the reservoir (17) and the drier-filter (18) are arranged in sequence upstream of the throttling assembly.

6. The ice thermal storage pump system as recited in claim 5, wherein,

The throttling assembly further comprises a fourth throttling interface (g 3);

In the refrigeration mode, the second heat exchange interface (g) is in one-way communication with the inlet of the liquid storage device (17), the outlet of the liquid storage device (17) is communicated with the first throttling interface (g 2) through the drying filter (18), the throttling assembly controls the first throttling interface (g 2) to be communicated with the second throttling interface (i 2), and the second throttling interface (i 2) is in one-way communication with the fourth heat exchange interface (i);

In the ice making mode, the second heat exchange interface (g) is in one-way communication with the inlet of the liquid storage device (17), the outlet of the liquid storage device (17) is communicated with the first throttling interface (g 2) through the drying filter (18), the throttling assembly controls the first throttling interface (g 2) to be communicated with the third throttling interface (m 2), and the third throttling interface (m 2) is communicated with the first ice making interface (m);

In the heating mode, the fourth heat exchange interface (i) is in one-way communication with the inlet of the liquid storage device (17), the outlet of the liquid storage device (17) is communicated with the first throttling interface (g 2) through the drying filter (18), the throttling assembly controls the first throttling interface (g 2) to be communicated with the fourth throttling interface (g 3), and the fourth throttling interface (g 3) is in one-way communication with the second heat exchange interface (g).

7. The ice thermal storage pump system as in claim 6 wherein,

When the throttle assembly comprises a first throttle member (7) and a second throttle member (8): the throttling assembly further comprises a fourth throttling component (22), and the first throttling interface (g 2) is connected with the fourth throttling interface (g 3) after passing through the fourth throttling component (22); in the heating mode, the first throttling interface (g 2) is communicated with an inlet of the fourth throttling component (22), and an outlet of the fourth throttling component (22) is communicated with the fourth throttling interface (g 3);

When the throttling assembly comprises a third throttling element (19): the first throttling interface (g 2) is connected with the fourth throttling interface (g 3) after passing through the third throttling component (19), the first throttling interface (g 2) is communicated with an inlet of the third throttling component (19) in the heating mode, and an outlet of the third throttling component (19) is communicated with the fourth throttling interface (g 3); or the throttling assembly further comprises a fourth throttling component (22), the first throttling interface (g 2) is connected with the fourth throttling interface (g 3) after passing through the fourth throttling component (22), in the heating mode, the first throttling interface (g 2) is communicated with an inlet of the fourth throttling component (22), and an outlet of the fourth throttling component (22) is communicated with the fourth throttling interface (g 3).

8. The ice thermal storage pump system as recited in claim 7 wherein,

When the throttling assembly comprises a fourth throttling component (22), the fourth throttling component (22) is a throttling component capable of closing flow to zero, and the fourth throttling interface (g 3) is in bidirectional communication with the second heat exchange interface (g); and/or

When the throttling assembly comprises a first throttling component (7), the first throttling component (7) is a throttling component capable of closing flow to zero, and the second throttling interface (i 2) is in bidirectional communication with the fourth heat exchange interface (i).

9. The ice thermal storage pump system as recited in claim 4 wherein,

The heat pump system also comprises a four-way reversing valve (2);

The first heat exchanger (3) further comprises a first heat exchange port (f), and the second heat exchanger (4) further comprises a third heat exchange port (h);

The four-way reversing valve (2) comprises a first valve port (d), a second valve port (c), a third valve port(s) and a fourth valve port (e); the first valve port (d) is used as an inlet of the high-temperature high-pressure gaseous refrigerant circulating in the ice storage heat pump system, the second valve port (c) is connected with the first heat exchange port (f), the third valve port(s) is used as an outlet of the low-temperature low-pressure gaseous refrigerant circulating in the ice storage heat pump system, and the fourth valve port (e) is connected with the third heat exchange port (h);

The first valve port (d) is communicated with the second valve port (c) and the third valve port(s) is communicated with the fourth valve port (e) in the refrigerating mode and the ice making mode;

In the heating mode, the first valve port (d) is communicated with the fourth valve port (e), and the second valve port (c) is communicated with the third valve port(s).

10. The ice thermal storage pump system as recited in claim 9 wherein,

The heat pump system further comprises a compressor (1);

an outlet (b) of the compressor (1) is connected with the first valve port (d);

The third valve port(s) is connected with an inlet (a) of the compressor (1) through a first air return valve (9), and the first air return valve (9) comprises one of a one-way valve and an electric valve; or the third valve port(s) is directly connected with an inlet (a) of the compressor (1);

The ice making assembly (5) is connected with the inlet (a) of the compressor (1) through a second air return valve (10), and the second air return valve (10) comprises one of a one-way valve and an electric valve.

11. The ice thermal storage pump system as claimed in claim 1, wherein,

The heat pump system further comprises a compressor (1);

-in the refrigeration mode and in the ice-making mode, the outlet (b) of the compressor (1) is connected to the first heat exchanger (3);

In the refrigeration mode, the second heat exchanger (4) is connected with an inlet (a) of the compressor (1) through a first air return valve (9), and the first air return valve (9) comprises one of a one-way valve and an electric valve; or the second heat exchanger (4) is directly connected to the inlet (a) of the compressor (1);

In the ice making mode, the ice making assembly (5) is connected with the inlet (a) of the compressor (1) through a second air return valve (10), and the second air return valve (10) comprises one of a one-way valve and an electric valve.

12. The ice thermal storage pump system as recited in claim 11 wherein,

The heat pump system also comprises an oil separator (11) and a gas-liquid separator (12);

the oil separator (11) is connected with the outlet (b) of the compressor (1), the first heat exchanger (3) and the gas-liquid separator (12) so as to separate the refrigerant and the lubricating oil and then respectively send the refrigerant and the lubricating oil into the first heat exchanger (3) and the gas-liquid separator (12) correspondingly;

The gas-liquid separator (12) is connected with the second heat exchanger (4), is connected with the ice making assembly (5) through the second air return valve (10) and is connected with the inlet (a) of the compressor (1) so as to send the lubricating oil and the refrigerant into the compressor (1).

13. The ice thermal storage pump system as recited in claim 10 wherein,

The heat pump system also comprises an oil separator (11) and a gas-liquid separator (12);

The oil separator (11) is connected with the outlet (b) of the compressor (1), the first valve port (d) of the four-way reversing valve (2) and the gas-liquid separator (12) so as to separate the refrigerant and the lubricating oil, and then send the refrigerant into the first heat exchanger (3) or the second heat exchanger (4) through the four-way reversing valve (2) and send the lubricating oil into the gas-liquid separator (12);

The gas-liquid separator (12) is connected with the inlet (a) of the compressor (1) and the oil outlet (u) of the oil separator, is connected with the third valve port(s) of the four-way reversing valve (2) through the first air return valve (9) and is connected with the ice making assembly (5) through the second air return valve (10) so as to send the lubricating oil and the refrigerant into the compressor (1).

14. The ice thermal storage pump system as claimed in claim 1, wherein,

The heat pump system further comprises a cold storage device (6);

The ice making assembly (5) is arranged in the cold accumulation device (6), water is contained in the cold accumulation device (6), and the water level submerges the ice making assembly (5);

The ice making assembly (5) comprises a plurality of coil heat exchangers, and the ice making assembly (5) is used for making ice from water in the cold accumulation device (6) and accumulating the cold in the ice making mode;

The cold accumulation device (6) is internally provided with a water distributor (61) and a water collector (62), and the water distributor (61) and the water collector (62) are respectively arranged at two sides of the ice making assembly (5);

The ice storage heat pump system is also provided with an ice melting mode;

In the ice melting mode, the water flow after the air conditioning system uses the cold energy enters the cold accumulation device (6) through the water distributor (61) to melt ice and form ice water, and the ice water flows out through the water collector (62) and is used for continuously supplying cold to the air conditioning system.