Integral water source machine

Abstract

The invention provides an integral type water source machine which comprises a compressor, a water supply side plate heat exchanger, a water supply side throttling element, a user side first plate heat exchanger, a user side second plate heat exchanger, a first four-way valve and a second four-way valve. A first electronic switch valve, a user side first throttling element, a second electronic switch valve and a user side second throttling element are arranged on the parallel branch; a third electronic switch valve is arranged between a fourth port of the second four-way valve and the user side first plate heat exchanger, and a fourth electronic switch valve is arranged between the fourth port of the second four-way valve and the first end of the refrigerant flow channel of the user side second plate heat exchanger. According to the integrated water source machine, by controlling opening and closing of the first electronic switch valve, the second electronic switch valve, the third electronic switch valve and the fourth electronic switch valve, the refrigerating and water heating functions can be achieved, the size is small, the occupied space is small, and installation in a narrow space can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of air-conditioning equipment, and in particular to an integrated water source machine. Background Art

[0002] Existing multifunctional water source machines are usually large in size and installation size to meet multifunctional requirements, and cannot be installed in narrow spaces.

[0003] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application. Therefore, it may contain information that does not constitute the prior art known to ordinary technicians in this field. Summary of the Invention

[0004] The present invention provides an integrated water source machine, which can solve the problem that the water source machine in the prior art is large in size and installation size and cannot be installed in a narrow space.

[0005] In some embodiments of the present application, an integrated water source machine is provided, comprising: compressor; Plate heat exchanger on the water supply side; Throttling element on the water supply side; The first plate heat exchanger on the user side; The refrigerant flow channel of the second plate heat exchanger on the user side is connected in parallel with the refrigerant flow channel of the first plate heat exchanger on the user side. The parallel branch where the refrigerant flow channel of the first plate heat exchanger on the user side is located is provided with a first electronic switch valve and a first user-side throttling element respectively located on both sides of the first plate heat exchanger on the user side. The parallel branch where the refrigerant flow channel of the second plate heat exchanger on the user side is located is provided with a second electronic switch valve and a second user-side throttling element respectively located on both sides of the second plate heat exchanger on the user side; the two ends of the parallel branch where the refrigerant flow channel of the first plate heat exchanger on the user side is located are respectively connected to the compressor suction port and the second end of the refrigerant flow channel of the water supply side plate heat exchanger, and the two ends of the parallel branch where the refrigerant flow channel of the second plate heat exchanger on the user side is respectively connected to the compressor suction port and the second end of the refrigerant flow channel of the water supply side plate heat exchanger; a first four-way valve, wherein the first port thereof is connected to the exhaust port of the compressor, the second port thereof is connected to the first end of the refrigerant flow channel of the plate heat exchanger on the water supply side, the third port thereof is connected to the air intake port of the compressor; and the fourth port thereof is configured to close or connect to the air intake port of the compressor; A second four-way valve, wherein the first port is connected to the compressor exhaust port, the second port is configured to be closed or connected to the compressor intake port, the third port is connected to the compressor intake port, the fourth port is connected to the first end of the refrigerant flow channel of the first plate heat exchanger on the user side and the first end of the refrigerant flow channel of the second plate heat exchanger on the user side, a third electronic switch valve is provided between the fourth port and the first end of the refrigerant flow channel of the first plate heat exchanger on the user side, and a fourth electronic switch valve is provided between the fourth port and the first end of the refrigerant flow channel of the second plate heat exchanger on the user side.

[0006] The integrated water source machine of the present application is formed by setting a first plate heat exchanger on the user side and a second plate heat exchanger on the user side in the water source machine, and by controlling the switching of the first electronic switch valve, the second electronic switch valve, the third electronic switch valve and the fourth electronic switch valve, the cooling and hot water functions can be realized without setting up an indoor unit; at the same time, the first plate heat exchanger on the user side and the second plate heat exchanger on the user side are built into the water source machine, forming an integrated design of the water source machine, which is small in size and occupies little space, and can meet the installation requirements of narrow spaces.

[0007] When the fourth port of the first four-way valve is configured to be connected to the compressor suction port, a first capillary tube is provided on the connecting pipeline between the fourth port of the first four-way valve and the compressor suction port; When the second port of the second four-way valve is configured to be connected to the compressor intake port, a second capillary tube is provided on the connecting pipeline between the second port of the second four-way valve and the compressor intake port.

[0008] In some embodiments of the present application, the compressor exhaust port is connected to a main air outlet pipeline, and the first port of the first four-way valve and the first port of the second four-way valve are connected in parallel to the main air outlet pipeline.

[0009] In some embodiments of the present application, an oil separator and a one-way valve are provided on the total air outlet pipeline. The oil separator is located between the compressor exhaust port and the one-way valve. The one-way valve is configured to only allow the refrigerant to flow in the direction of the compressor exhaust flow.

[0010] In some embodiments of the present application, the total air outlet pipeline is connected to a high- and low-pressure bypass pipeline, one end of the high- and low-pressure bypass pipeline is connected to the total air outlet pipeline and is located downstream of the one-way valve, and the other end is connected to the compressor intake port, and a bypass solenoid valve is provided on the high- and low-pressure bypass pipeline.

[0011] In some embodiments of the present application, a filter is further provided on the high and low pressure bypass pipeline, and the filter is located between the one-way valve and the bypass solenoid valve.

[0012] In some embodiments of the present application, the compressor intake port is connected to a gas-liquid separator, the bottom of the oil separator is connected to the gas-liquid separator via an oil return pipe, and the oil return pipe is provided with a filter and a third capillary tube.

[0013] In some embodiments of the present application, a filter is provided on the connecting pipeline between the compressor intake port and the gas-liquid separator.

[0014] In some embodiments of the present application, the integrated water source machine includes the following operating modes: separate cooling water mode, separate hot water mode; The specific operation of the separate chilled water mode is as follows: the first electronic switch valve, the second electronic switch valve, the third electronic switch valve, and the fourth electronic switch valve are opened, and the high-temperature and high-pressure gaseous refrigerant discharged from the compressor enters the water supply side plate heat exchanger through the first four-way valve, and after being throttled by the water supply side throttling element, the first user side throttling element, and the second user side throttling element, enters the first user side plate heat exchanger and the second user side plate heat exchanger, evaporates and exchanges heat by the first user side plate heat exchanger and the second user side plate heat exchanger, and then returns to the compressor through the first electronic switch valve, the second electronic switch valve, the third electronic switch valve, and the fourth electronic switch valve, completing the cycle; The specific operation of the separate hot water production mode is as follows: the first electronic switch valve and the second electronic switch valve are closed, and the third electronic switch valve and the fourth electronic switch valve are opened. The high-temperature and high-pressure gaseous refrigerant discharged from the compressor passes through the second four-way valve, the third electronic switch valve and the fourth electronic switch valve, enters the first plate heat exchanger on the user side and the second plate heat exchanger on the user side for condensation, and enters the water supply side plate heat exchanger after throttling through the first throttling element on the user side, the second throttling element on the user side and the throttling element on the water supply side, and then returns to the compressor through the first four-way valve to complete the cycle.

[0015] In some embodiments of the present application, the integrated water source machine includes a mode for producing hot and cold water simultaneously; The specific operation of the simultaneous production of hot and cold water mode is as follows: the first electronic switch valve is closed, the second electronic switch valve is opened, the third electronic switch valve is opened, and the fourth electronic switch valve is closed, and the high-temperature and high-pressure gaseous refrigerant discharged from the compressor enters the first four-way valve and the second four-way valve respectively; the refrigerant passing through the second four-way valve enters the first plate heat exchanger on the user side for condensation and is throttled by the first throttling element on the user side. At the same time, the refrigerant passing through the first four-way valve enters the plate heat exchanger on the water supply side for condensation and is throttled by the throttling element on the water supply side. After the two refrigerants are mixed, they are throttled by the second throttling element on the user side, enter the second plate heat exchanger on the user side for evaporation and heat exchange, and return to the compressor through the second electronic switch valve to complete the cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The structural principle of the integrated water source machine according to the embodiment is shown Figure 1 ; Figure 2 Shown Figure 1 The schematic diagram of the system operation principle when the integral water source machine is cooling water alone is shown; Figure 3 Shown Figure 1 The schematic diagram of the system operation principle when the integrated water source machine is producing hot water alone; Figure 4 Shown Figure 1 The schematic diagram of the system operation principle when the integrated water source machine is used for both cooling and hot water; Figure 5 The structural principle of the integrated water source machine according to the embodiment is shown Figure 2 ; Figure 6 Shown Figure 5 The schematic diagram of the system operation principle when the integral water source machine is cooling water alone is shown; Figure 7 Shown Figure 5 The schematic diagram of the system operation principle when the integrated water source machine is producing hot water alone; Figure 8 Shown Figure 5 The schematic diagram of the system operation principle when the integrated water source machine is used for both cooling and hot water; Figure 9 The structural principle of the integrated water source machine according to the embodiment is shown Figure 3 ; Figure 10 Shown Figure 9 The schematic diagram of the system operation principle when the integral water source machine is cooling water alone is shown; Figure 11 Shown Figure 9 The schematic diagram of the system operation principle when the integrated water source machine is producing hot water alone; Figure 12 Shown Figure 9 The diagram shows the operating principle of the system when the integrated water source machine cools and heats water at the same time.

[0017] Reference numerals: 10. Compressor; 11. Compressor exhaust port; 12. Compressor intake port; 20. Plate heat exchanger on the water supply side; 30. First plate heat exchanger on the user side; 40. Second plate heat exchanger on the user side; 50. First electronic switch valve; 60. First throttling element on the user side; 70. Second electronic switch valve; 80. Second throttling element on the user side; 90. First four-way valve; 91. First port of the first four-way valve; 92. Second port of the first four-way valve; 93. Third port of the first four-way valve; 94. Fourth port of the first four-way valve; 100. Second four-way valve; 101. First port of the second four-way valve; 102. Second port of the second four-way valve Two-way port; 103, third port of the second four-way valve; 104, fourth port of the second four-way valve; 110, third electronic switch valve; 120, fourth electronic switch valve; 130, main pipeline one; 140, main pipeline two; 150, first capillary tube; 160, first solenoid valve; 170, second capillary tube; 180, second solenoid valve; 190, main air outlet pipeline; 200, oil separator; 210, one-way valve; 220, gas-liquid separator; 230, filter; 240, third capillary tube; 250, high and low pressure bypass pipeline; 260, bypass solenoid valve; 270, water supply side throttling element; 280, oil return pipe. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0020] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0021] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0022] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0023] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0024] The air conditioner of the present invention performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation to cool or heat the indoor space.

[0025] Low-temperature, low-pressure refrigerant enters the compressor, which compresses it into high-temperature, high-pressure refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, releasing heat into the surrounding environment through the condensation process.

[0026] The expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser to a lower-pressure liquid. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves cooling by utilizing the latent heat of evaporation to exchange heat with the material being cooled.

[0027] Reference Figure 1 In some embodiments of the present application, an integrated water source machine is proposed, including a compressor 10, a water supply side plate heat exchanger 20, a water supply side throttling element 270, a user side first plate heat exchanger 30, a user side second plate heat exchanger 40, a first four-way valve 90 and a second four-way valve 100.

[0028] The compressor 10 is provided with a compressor exhaust port 11 (also called an air outlet) and a compressor intake port 12 (also called an air inlet).

[0029] The water supply side plate heat exchanger 20 includes a refrigerant flow channel and a water flow channel. The refrigerant flow channel is used for the flow of refrigerant, and the water flow channel is connected to a water source for the flow of water, such as groundwater, surface water, etc. A water pump is provided on the water flow channel to provide driving force for the flow of water in the water flow channel.

[0030] The first plate heat exchanger 30 on the user side includes a refrigerant flow channel and a water flow channel. Similarly, the refrigerant flow channel is used for the refrigerant to flow through, and the water flow channel is used for the water to flow through, providing cold water or hot water to the user side.

[0031] The second plate heat exchanger 40 on the user side has the same structure as the first plate heat exchanger 30 on the user side, including a refrigerant flow channel and a water flow channel. Similarly, the refrigerant flow channel is used for the flow of refrigerant, and the water flow channel is used for the flow of water to provide cold water or hot water to the user side.

[0032] The refrigerant flow path of the first user-side plate heat exchanger 30 is connected in parallel with the refrigerant flow path of the second user-side plate heat exchanger 40 .

[0033] The parallel branch circuit for the refrigerant flow path of the first user-side plate heat exchanger 30 is equipped with a first electronic on-off valve 50 and a first user-side throttling element 60, respectively located on either side of the first user-side plate heat exchanger 30. The first user-side throttling element 60 is used to throttle the refrigerant entering and exiting the first user-side plate heat exchanger 30. The parallel branch circuit for the refrigerant flow path of the second user-side plate heat exchanger 40 is equipped with a second electronic on-off valve 70 and a second user-side throttling element 80, respectively located on either side of the second user-side plate heat exchanger 40. The second user-side throttling element 80 is used to throttle the refrigerant entering and exiting the second user-side plate heat exchanger 40.

[0034] The two ends of the parallel branch where the refrigerant flow channel of the first plate heat exchanger 30 on the user side is located are respectively connected to the compressor suction port 12 and the second end b of the refrigerant flow channel of the plate heat exchanger 20 on the water supply side. The two ends of the parallel branch where the refrigerant flow channel of the second plate heat exchanger 40 on the user side is located are respectively connected to the compressor suction port 12 and the second end b of the refrigerant flow channel of the plate heat exchanger 20 on the water supply side.

[0035] The first four-way valve 90 has four ports, the first port 91 of the first four-way valve is connected to the compressor exhaust port 11; the second port 92 of the first four-way valve is connected to the first end a of the refrigerant flow channel of the water supply side plate heat exchanger 20; the third port 93 of the first four-way valve is connected to the compressor intake port 12; and the fourth port 94 of the first four-way valve is connected to the compressor intake port 12.

[0036] The second four-way valve 100 has four ports, the first port 101 of the second four-way valve is connected to the compressor exhaust port 11; the second port 102 of the second four-way valve is connected to the compressor intake port 12; the third port 103 of the second four-way valve is connected to the compressor intake port 12; the fourth port 104 of the second four-way valve is connected to the first end c of the refrigerant flow channel of the first plate heat exchanger 30 on the user side and the first end d of the refrigerant flow channel of the second plate heat exchanger 40 on the user side, and a third electronic switch valve 110 is provided between the fourth port 104 of the second four-way valve and the first end c of the refrigerant flow channel of the first plate heat exchanger 30 on the user side, and a fourth electronic switch valve 120 is provided between the fourth port 104 of the second four-way valve and the first end d of the refrigerant flow channel of the second plate heat exchanger 40 on the user side.

[0037] The water supply side throttling element 270 is located between the second end b of the refrigerant flow channel of the water supply side plate heat exchanger 20 and the two parallel branches where the first plate heat exchanger 30 on the user side and the second plate heat exchanger 40 on the user side are located. The first throttling element 60 on the user side and the second throttling element 80 on the user side are close to the side where the water supply side throttling element 270 is located, and the first electronic switch valve 50, the second electronic switch valve 70, the third electronic switch valve 110, and the fourth electronic switch valve 120 are far away from the side where the water supply side throttling element 270 is located.

[0038] In some embodiments of the present application, an integrated water source machine is formed by setting a first plate heat exchanger 30 on the user side and a second plate heat exchanger 40 on the user side in the water source machine, and by controlling the opening or closing of the first electronic switch valve 50, the second electronic switch valve 70, the third electronic switch valve 110 and the fourth electronic switch valve 120, the hot and cold water functions of the integrated water source machine can be realized without the need to set up an indoor unit; at the same time, the first plate heat exchanger 30 on the user side and the second plate heat exchanger 40 on the user side are built into the water source machine to form an integrated design of the water source machine, which is small in size and occupies little space, and can meet the requirements of installation in narrow spaces.

[0039] In some embodiments of the present application, the first electronic switch valve 50 , the second electronic switch valve 70 , the third electronic switch valve 110 , and the fourth electronic switch valve 120 are electronic expansion valves, respectively, which have on-off functions and low noise.

[0040] In some embodiments of the present application, the first electronic switch valve 50 , the second electronic switch valve 70 , the third electronic switch valve 110 , and the fourth electronic switch valve 120 may also be solenoid valves respectively.

[0041] In some embodiments of the present application, the first user-side throttling element 60 , the second user-side throttling element 80 , and the water supply-side throttling element 270 are electronic expansion valves, respectively.

[0042] In some embodiments of the present application, the third port 93 of the first four-way valve is connected to a main pipeline 130, the refrigerant flow path of the water supply-side plate heat exchanger 20 is connected to a main pipeline 2 140, the refrigerant flow path of the first user-side plate heat exchanger 30 is connected to main pipeline 130 and main pipeline 2 140 at both ends of the parallel branch, the refrigerant flow path of the second user-side plate heat exchanger 40 is connected to main pipeline 130 and main pipeline 2 140 at both ends of the parallel branch, and the refrigerant flow path of the second user-side plate heat exchanger 40 is connected to main pipeline 130 and main pipeline 2 140 at both ends of the parallel branch. The compressor intake port 12 is connected to main pipeline 130 via a pipeline. The third port 93 of the first four-way valve is connected to main pipeline 130, thereby simultaneously connecting it to the first end of the refrigerant flow path of the first user-side plate heat exchanger 30, the first end of the refrigerant flow path of the second user-side plate heat exchanger 40, and the compressor intake port 12.

[0043] In some embodiments of the present application, the above-mentioned integrated water source machine has the following working modes: a separate cooling water mode and a separate hot water mode.

[0044] Reference Figure 2 The above-mentioned integrated water source machine single cooling water mode operates specifically as follows. Figure 2 Except for the arrows pointing to the water inlet and outlet directions, which are the water flow directions, the other straight arrows point to the refrigerant flow directions.

[0045] The first port 91 of the first four-way valve is connected to the second port 92 of the first four-way valve, and the third port 93 of the first four-way valve is connected to the fourth port 94 of the first four-way valve; the first port 101 of the second four-way valve is connected to the second port 102 of the second four-way valve, and the third port 103 of the second four-way valve is connected to the fourth port 104 of the second four-way valve.

[0046] The first electronic switch valve 50, the second electronic switch valve 70, the third electronic switch valve 110 and the fourth electronic switch valve 120 are all opened, and the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 10 enters the water supply side plate heat exchanger 20 through the first four-way valve 90 for condensation, is first throttled by the water supply side throttling element 270, and then divided into two paths to enter the user side first plate heat exchanger 30 parallel branch respectively, and then enters the user side first throttling element 60, the user side second throttling element 80 after throttling into the user side first plate heat exchanger. The water in the water flow channels of the first plate heat exchanger 30 on the user side and the second plate heat exchanger 40 on the user side is cooled and provided with cold water for the user.

[0047] Reference Figure 3 The specific operation of the above-mentioned integrated water source machine's separate hot water making mode is as follows. Figure 3 Except for the arrows pointing to the water inlet and outlet directions, which are the water flow directions, the other straight arrows point to the refrigerant flow directions.

[0048] The first port 91 of the first four-way valve is connected to the fourth port 94 of the first four-way valve, and the second port 92 of the first four-way valve is connected to the third port 93 of the first four-way valve; the first port 101 of the second four-way valve is connected to the fourth port 104 of the second four-way valve, and the second port 102 of the second four-way valve is connected to the third port 103 of the second four-way valve.

[0049] The first and second electronic on-off valves 50 and 70 are closed, while the third and fourth electronic on-off valves 110 and 120 are opened. The high-temperature, high-pressure gaseous refrigerant discharged from the compressor 10 passes through the second, third, and fourth four-way valves 100, 110, and 120, then enters the user-side first and second plate heat exchangers 30 and 40 for condensation. After being throttled by the user-side first and second throttle elements 60, 80, and 270, it enters the water-supply-side plate heat exchanger 20 and then returns to the compressor 10 through the first four-way valve 90, completing the cycle. During this cycle, the water in the water flow channels of the user-side first and second plate heat exchangers 30, 40 is heated, providing hot water for the user.

[0050] In some embodiments of the present application, the above-mentioned integrated water source machine has the following working mode: a mode for producing hot and cold water simultaneously.

[0051] Reference Figure 4 The specific operation of the above-mentioned integrated water source machine in the mode of producing hot and cold water at the same time is as follows. Figure 4Except for the arrows pointing to the water inlet and outlet directions, which are the water flow directions, the other straight arrows point to the refrigerant flow directions.

[0052] The first port 91 of the first four-way valve is connected to the second port 92 of the first four-way valve, and the third port 93 of the first four-way valve is connected to the fourth port 94 of the first four-way valve; the first port 101 of the second four-way valve is connected to the fourth port 104 of the second four-way valve, and the second port 102 of the second four-way valve is connected to the third port 103 of the second four-way valve.

[0053] The first electronic switch valve 50 is closed, the second electronic switch valve 70 is opened, the third electronic switch valve 110 is opened, and the fourth electronic switch valve 120 is closed; the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 10 enters the first four-way valve 90 and the second four-way valve 100 respectively; the refrigerant passing through the second four-way valve 100 enters the first plate heat exchanger 30 on the user side for condensation and is throttled by the first throttling element 60 on the user side; at the same time, the refrigerant passing through the first four-way valve 90 enters the plate heat exchanger 20 on the water supply side for condensation and is throttled by the throttling element 270 on the water supply side. After throttling, the two refrigerants are mixed and then throttled by the second throttling element 80 on the user side, enter the second plate heat exchanger 40 on the user side for evaporation and heat exchange, and return to the compressor 10 through the second electronic switch valve 70 to complete the cycle. During the circulation process, the water in the water flow channel of the first plate heat exchanger 30 on the user side is cooled to provide cold water for the user; the water in the water flow channel of the second plate heat exchanger 40 on the user side is heated to provide hot water for the user, so that the integrated water source machine in the embodiment of the present application can cool and heat water at the same time.

[0054] When the fourth port 94 of the first four-way valve is configured to be connected to the compressor intake port 12, and when hot water is produced, the first port 91 of the first four-way valve is connected to the fourth port 94 of the first four-way valve, then when the high-temperature and high-pressure gaseous refrigerant discharged from the compressor exhaust port 11 enters the second four-way valve 100, part of the gaseous refrigerant will pass through the first four-way valve 90, and then enter the compressor 10 through the first port 91 of the first four-way valve, the fourth port 94 of the first four-way valve, and the compressor intake port 12. This part of the refrigerant directly enters the compressor 10 without heat exchange, resulting in a reduction in system capacity.

[0055] In order to reduce the degradation of system capability caused by the above situation, in some embodiments of the present application, such as Figure 1 and Figure 3 As shown, a first capillary tube 150 is provided on the connecting pipeline between the fourth port 94 of the first four-way valve and the compressor suction port 12 to play a throttling role, thereby minimizing the amount of refrigerant that directly enters the compressor 10 without heat exchange and ensuring system capacity.

[0056] In some embodiments of the present application, a first solenoid valve 160 may be further provided on the connecting pipeline between the fourth port 94 of the first four-way valve and the compressor intake port 12. When necessary, the connection between the fourth port 94 of the first four-way valve and the compressor intake port 12 may be directly cut off by closing the first solenoid valve 160.

[0057] Similarly, when the second port 102 of the second four-way valve is configured to be connected to the compressor intake port 12, and when the cooling water is used, the first port 101 of the second four-way valve is connected to the second port 102 of the second four-way valve, then when the high-temperature and high-pressure gaseous refrigerant discharged from the compressor exhaust port 11 enters the first four-way valve 90, part of the gaseous refrigerant will pass through the second four-way valve 100, and then enter the compressor 10 through the first port 101 of the second four-way valve, the second port 102 of the second four-way valve, and the compressor intake port 12. This part of the refrigerant directly enters the compressor 10 without heat exchange, resulting in a reduction in system capacity.

[0058] In order to reduce the degradation of system capability caused by the above situation, in some embodiments of the present application, such as Figure 1 and Figure 2 As shown, a second capillary tube 170 is provided on the connecting pipeline between the second port 102 of the second four-way valve and the compressor suction port 12 to play a throttling role, thereby minimizing the amount of refrigerant that directly enters the compressor 10 without heat exchange and ensuring system capacity.

[0059] In some embodiments of the present application, Figures 1 to 4 As shown, the fourth port 94 of the first four-way valve is connected to the connecting pipeline between the third port 93 of the first four-way valve and the compressor intake port 12 via a pipeline, thereby achieving a connection with the compressor intake port 12. Similarly, the second port 102 of the second four-way valve is connected to the connecting pipeline between the third port 93 of the first four-way valve and the compressor intake port 12 via a pipeline, thereby achieving a connection with the compressor intake port 12. After the two parallel branches containing the refrigerant flow channels of the first user-side plate heat exchanger 30 and the second user-side plate heat exchanger 40 converge, they are also connected to the connecting pipeline between the third port 93 of the first four-way valve and the compressor intake port 12, thereby achieving a connection with the compressor intake port 12.

[0060] In some embodiments of the present application, a second solenoid valve 180 may be further provided on the connecting pipeline between the second port 102 of the second four-way valve and the compressor intake port 12. When necessary, the connection between the second port 102 of the second four-way valve and the compressor intake port 12 may be directly cut off by closing the second solenoid valve 180.

[0061] To facilitate the connection between the first four-way valve 90 and the second four-way valve 100 and the compressor exhaust port 11, in some embodiments of the present application, the compressor exhaust port 11 is connected to a main exhaust pipe 190, and the first port 91 of the first four-way valve and the first port 101 of the second four-way valve are connected in parallel to the main exhaust pipe 190. The main exhaust pipe 190 is divided into two parallel branches, which are respectively connected to the first port 91 of the first four-way valve and the first port 101 of the second four-way valve.

[0062] Reference Figure 5 In some embodiments of the present application, an oil separator 200 and a one-way valve 210 are provided on the main outlet pipe 190. The oil separator 200 is located between the compressor exhaust port 11 and the one-way valve 210. The one-way valve 210 is configured to only allow the refrigerant to flow in the exhaust direction of the compressor 10. That is, the one-way valve 210 is configured to only allow the refrigerant to flow toward the location of the first four-way valve 90 and the second four-way valve 100, so as to flow toward the first four-way valve 90 and the second four-way valve 100. The one-way valve 210 acts as a reverse cutoff, preventing the compressor 10 from starting with a pressure differential, thereby protecting the compressor 10. The oil separator 200 achieves gas-oil separation, that is, it can separate the lubricating oil from the gaseous refrigerant.

[0063] In some embodiments of the present application, the compressor intake port 12 is connected to a gas-liquid separator 220 to separate the gas and liquid of the low-pressure side refrigerant to prevent the liquid refrigerant from entering the compressor 10 and causing compressor liquid hammer.

[0064] In some embodiments of the present application, a filter 230 is provided on the connecting pipeline between the compressor intake port 12 and the gas-liquid separator 220 so that the low-pressure side refrigerant undergoing gas-liquid separation is further filtered before entering the compressor 10.

[0065] In some embodiments of the present application, the bottom of the oil separator 200 is connected to the gas-liquid separator 220 via an oil return pipe 280, which is equipped with a filter and a third capillary tube 240. After the oil separator 200 separates the lubricating oil from the gaseous refrigerant, the separated lubricating oil is filtered and returned to the compressor 10 to prevent the compressor 10 from burning due to oil shortage.

[0066] In some embodiments of the present application, the total air outlet pipeline 190 connected to the compressor exhaust port 11 is also connected to a high- and low-pressure bypass pipeline 250. One end of the high- and low-pressure bypass pipeline 250 is connected to the total air outlet pipeline 190 and is located downstream of the one-way valve 210, and the other end is connected to the compressor intake port 12. A bypass solenoid valve 260 is provided on the high- and low-pressure bypass pipeline 250.

[0067] The bypass solenoid valve 260 opens when the high-pressure refrigerant pressure is too high or the low-pressure refrigerant pressure is too low to balance the refrigerant pressure on the high-pressure side and the low-pressure side, so that the refrigerant pressure is within a reliable range, avoiding the impact of high pressure or low pressure on system operation reliability.

[0068] In some embodiments of the present application, a filter is further provided on the high- and low-pressure bypass line 250 , located between the one-way valve 210 and the bypass solenoid valve 260 .

[0069] Reference Figure 6 , using Figure 5 The specific operation of the integrated water source machine with the structure shown in the single cooling water mode is as follows. Figure 6 Except for the arrows pointing to the water inlet and outlet directions, which are the water flow directions, the other straight arrows point to the refrigerant flow directions.

[0070] The first port 91 of the first four-way valve is connected to the second port 92 of the first four-way valve, and the third port 93 of the first four-way valve is connected to the fourth port 94 of the first four-way valve; the first port 101 of the second four-way valve is connected to the second port 102 of the second four-way valve, and the third port 103 of the second four-way valve is connected to the fourth port 104 of the second four-way valve.

[0071] The first electronic switch valve 50, the second electronic switch valve 70, the third electronic switch valve 110 and the fourth electronic switch valve 120 are all opened. The high-temperature and high-pressure gaseous refrigerant discharged from the compressor 10 enters the water supply side plate heat exchanger 20 for condensation through the oil separator 200, the one-way valve 210 and the first four-way valve 90. It is first throttled by the water supply side throttling element 270 and then divided into two paths to enter the parallel branch of the first plate heat exchanger 30 on the user side, the first throttling element 60 on the user side and the second throttling element 80 on the user side, and then enters the first plate heat exchanger 30 on the user side and the second plate heat exchanger 40 on the user side. It evaporates and exchanges heat in the first plate heat exchanger 30 on the user side and the second plate heat exchanger 40 on the user side, and then returns to the compressor 10 through the first electronic switch valve 50, the second electronic switch valve 70, the third electronic switch valve 110, the fourth electronic switch valve 120, the second four-way valve 100 and the gas-liquid separator 220, completing the cycle. During the circulation process, the water in the water flow channels of the first plate heat exchanger 30 on the user side and the second plate heat exchanger 40 on the user side is cooled to provide cold water for the user.

[0072] Reference Figure 7 , using Figure 5 The specific operation of the integrated water source machine of the structure shown in the separate hot water production mode is as follows. Figure 7 Except for the arrows pointing to the water inlet and outlet directions, which are the water flow directions, the other straight arrows point to the refrigerant flow directions.

[0073] The first port 91 of the first four-way valve is connected to the fourth port 94 of the first four-way valve, and the second port 92 of the first four-way valve is connected to the third port 93 of the first four-way valve; the first port 101 of the second four-way valve is connected to the fourth port 104 of the second four-way valve, and the second port 102 of the second four-way valve is connected to the third port 103 of the second four-way valve.

[0074] With the first and second electronic on-off valves 50 and 70 closed and the third and fourth electronic on-off valves 110 and 120 open, the high-temperature, high-pressure gaseous refrigerant discharged from the compressor 10 passes through the oil separator 200, the one-way valve 210, the second four-way valve 100, the third electronic on-off valve 110, and the fourth electronic on-off valve 120 before entering the user-side first and second plate heat exchangers 30 and 40 for condensation. After being throttled by the user-side first and second throttle elements 60 and 80, respectively, and the water-supply-side throttle element 270, the refrigerant enters the water-supply-side plate heat exchanger 20. The refrigerant then passes through the first four-way valve 90 and the gas-liquid separator 220 and returns to the compressor 10, completing the cycle. During this cycle, the water in the water channels of the user-side first and second plate heat exchangers 30 and 40 is heated, providing hot water for the user.

[0075] In some embodiments of the present application, the above-mentioned integrated water source machine has the following working mode: a mode for producing hot and cold water simultaneously.

[0076] Reference Figure 8 , using Figure 5 The specific operation of the integrated water source machine with the structure shown in the simultaneous production of hot and cold water mode is as follows. Figure 8 Except for the arrows pointing to the water inlet and outlet directions, which are the water flow directions, the other straight arrows point to the refrigerant flow directions.

[0077] The first port 91 of the first four-way valve is connected to the second port 92 of the first four-way valve, and the third port 93 of the first four-way valve is connected to the fourth port 94 of the first four-way valve; the first port 101 of the second four-way valve is connected to the fourth port 104 of the second four-way valve, and the second port 102 of the second four-way valve is connected to the third port 103 of the second four-way valve.

[0078] The first electronic switch valve 50 is closed, the second electronic switch valve 70 is opened, the third electronic switch valve 110 is opened, and the fourth electronic switch valve 120 is closed; the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 10 passes through the oil separator 200 and the one-way valve 210 and enters the first four-way valve 90 and the second four-way valve 100 respectively; the refrigerant passing through the second four-way valve 100 enters the user-side first plate heat exchanger 30 for condensation and is throttled by the user-side first throttling element 60; at the same time, the refrigerant passing through the first four-way valve 90 enters the water-supply-side plate heat exchanger 20 for condensation and is throttled by the water-supply-side throttling element 270; after throttling, the two refrigerants are mixed and then throttled by the user-side second throttling element 80, enter the user-side second plate heat exchanger 40 for evaporation and heat exchange, and return to the compressor 10 through the second electronic switch valve 70 and the gas-liquid separator 220, completing the cycle. During the circulation process, the water in the water flow channel of the first plate heat exchanger 30 on the user side is cooled to provide cold water for the user; the water in the water flow channel of the second plate heat exchanger 40 on the user side is heated to provide hot water for the user, so that the integrated water source machine in the embodiment of the present application can cool and heat water at the same time.

[0079] Reference Figure 9 In some embodiments of the present application, an integrated water source machine is proposed, including a compressor 10, a water supply side plate heat exchanger 20, a water supply side throttling element 270, a user side first plate heat exchanger 30, a user side second plate heat exchanger 40, a first four-way valve 90 and a second four-way valve 100. The connection structure between each component is similar to Figures 1 to 8 The embodiment shown is the same as that described above, but different from the above embodiment is that the fourth port 94 of the first four-way valve is configured to be closed, and the second port 102 of the second four-way valve is configured to be closed. For example, the fourth port 94 of the first four-way valve and the second port 102 of the second four-way valve are directly welded to prevent the refrigerant without heat exchange from returning directly to the compressor 10.

[0080] Reference Figure 10 , which is adopted as Figure 9 The structure of the integrated water source machine shown in the figure is the operating principle diagram of the single cooling water mode. The principle is basically the same as Figure 6 , I will not go into details here.

[0081] Reference Figure 11 , which is adopted as Figure 9 The structure of the integrated water source machine shown in the figure is the operating cycle principle diagram of the independent hot water production mode. The principle is basically the same as Figure 7 , I will not go into details here.

[0082] Reference Figure 12 , which is adopted as Figure 9 The structure of the integrated water source machine shown in the figure is the same as the principle diagram of the operation cycle of the hot and cold water mode. Figure 8 , I will not go into details here.

[0083] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0084] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An integrated water source machine, characterized in that: include: compressor; Plate heat exchanger on the water supply side; Throttling element on the water supply side; The first plate heat exchanger on the user side; The refrigerant flow channel of the second plate heat exchanger on the user side is connected in parallel with the refrigerant flow channel of the first plate heat exchanger on the user side; the parallel branch where the refrigerant flow channel of the first plate heat exchanger on the user side is located is provided with a first electronic switch valve and a first user-side throttling element respectively located on both sides of the first plate heat exchanger on the user side; the parallel branch where the refrigerant flow channel of the second plate heat exchanger on the user side is located is provided with a second electronic switch valve and a second user-side throttling element respectively located on both sides of the second plate heat exchanger on the user side; the two ends of the parallel branch where the refrigerant flow channel of the first plate heat exchanger on the user side is located are respectively connected to the compressor suction port and the second end of the refrigerant flow channel of the water supply side plate heat exchanger, and the two ends of the parallel branch where the refrigerant flow channel of the second plate heat exchanger on the user side is respectively connected to the compressor suction port and the second end of the refrigerant flow channel of the water supply side plate heat exchanger; a first four-way valve, wherein the first port thereof is connected to the exhaust port of the compressor, the second port thereof is connected to the first end of the refrigerant flow channel of the plate heat exchanger on the water supply side, the third port thereof is connected to the air intake port of the compressor; and the fourth port thereof is configured to close or connect to the air intake port of the compressor; A second four-way valve, wherein the first port is connected to the compressor exhaust port, the second port is configured to be closed or connected to the compressor intake port, the third port is connected to the compressor intake port, the fourth port is connected to the first end of the refrigerant flow channel of the first plate heat exchanger on the user side and the first end of the refrigerant flow channel of the second plate heat exchanger on the user side, a third electronic switch valve is provided between the fourth port and the first end of the refrigerant flow channel of the first plate heat exchanger on the user side, and a fourth electronic switch valve is provided between the fourth port and the first end of the refrigerant flow channel of the second plate heat exchanger on the user side.

2. The integrated water source machine according to claim 1, characterized in that: When the fourth port of the first four-way valve is configured to be connected to the compressor suction port, a first capillary tube is provided on the connecting pipeline between the fourth port of the first four-way valve and the compressor suction port; When the second port of the second four-way valve is configured to be connected to the compressor intake port, a second capillary tube is provided on the connecting pipeline between the second port of the second four-way valve and the compressor intake port.

3. The integrated water source machine according to claim 1, characterized in that: The compressor exhaust port is connected to a main gas outlet pipeline, and the first port of the first four-way valve and the first port of the second four-way valve are connected in parallel to the main gas outlet pipeline.

4. The integrated water source machine according to claim 3, characterized in that: An oil separator and a one-way valve are provided on the main air outlet pipeline. The oil separator is located between the compressor exhaust port and the one-way valve. The one-way valve is configured to only allow the refrigerant to flow in the direction of the compressor exhaust flow.

5. The integrated water source machine according to claim 4, characterized in that: The total air outlet pipeline is connected to a high- and low-pressure bypass pipeline, one end of which is connected to the total air outlet pipeline and is located downstream of the one-way valve, and the other end is connected to the compressor intake port. A bypass solenoid valve is provided on the high- and low-pressure bypass pipeline.

6. The integrated water source machine according to claim 5, characterized in that: A filter is further provided on the high and low pressure bypass pipelines, and the filter is located between the one-way valve and the bypass solenoid valve.

7. The integrated water source machine according to claim 4, characterized in that: The compressor air intake is connected to a gas-liquid separator, the bottom of the oil separator is connected to the gas-liquid separator via an oil return pipe, and the oil return pipe is provided with a filter and a third capillary tube.

8. The integrated water source machine according to claim 7, characterized in that: A filter is provided on the connecting pipeline between the compressor air intake and the gas-liquid separator.

9. The integrated water source machine according to claim 1, characterized in that: The integrated water source machine includes the following working modes: separate cooling water mode, separate hot water mode; The specific operation of the separate chilled water mode is as follows: the first electronic switch valve, the second electronic switch valve, the third electronic switch valve, and the fourth electronic switch valve are opened, and the high-temperature and high-pressure gaseous refrigerant discharged from the compressor enters the water supply side plate heat exchanger through the first four-way valve, and after being throttled by the water supply side throttling element, the first user side throttling element, and the second user side throttling element, enters the first user side plate heat exchanger and the second user side plate heat exchanger, evaporates and exchanges heat by the first user side plate heat exchanger and the second user side plate heat exchanger, and then returns to the compressor through the first electronic switch valve, the second electronic switch valve, the third electronic switch valve, and the fourth electronic switch valve, completing the cycle; The specific operation of the separate hot water production mode is as follows: the first electronic switch valve and the second electronic switch valve are closed, and the third electronic switch valve and the fourth electronic switch valve are opened. The high-temperature and high-pressure gaseous refrigerant discharged from the compressor passes through the second four-way valve, the third electronic switch valve and the fourth electronic switch valve, enters the first plate heat exchanger on the user side and the second plate heat exchanger on the user side for condensation, and enters the water supply side plate heat exchanger after throttling through the first throttling element on the user side, the second throttling element on the user side and the throttling element on the water supply side, and then returns to the compressor through the first four-way valve to complete the cycle.

10. The integrated water source machine according to claim 9, characterized in that: The integrated water source machine includes a mode for producing hot and cold water simultaneously; The specific operation of the simultaneous hot and cold water production mode is as follows: the first electronic switch valve is closed, the second electronic switch valve is opened, the third electronic switch valve is opened, and the fourth electronic switch valve is closed, and the high-temperature and high-pressure gaseous refrigerant discharged from the compressor enters the first four-way valve and the second four-way valve respectively; The refrigerant passing through the second four-way valve enters the first plate heat exchanger on the user side for condensation and is throttled by the first throttling element on the user side. At the same time, the refrigerant passing through the first four-way valve enters the plate heat exchanger on the water supply side for condensation and is throttled by the throttling element on the water supply side. After the two refrigerants are mixed, they are throttled by the second throttling element on the user side, enter the second plate heat exchanger on the user side for evaporation and heat exchange, and return to the compressor through the second electronic switch valve to complete the cycle.

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