Compressor module, air conditioning system and control method

Abstract

The present invention provides a compressor module, an air conditioning system and a control method, wherein the compressor module comprises a compressor body, a first liquid reservoir, a second liquid reservoir, a valve assembly, and the valve assembly comprises a first three-way valve, a second three-way valve, a first four-way valve, a second four-way valve and a third four-way valve, etc. The compressor module of the present invention is provided with a valve assembly comprising a plurality of three-way valves and a plurality of four-way valves. When it is applied to an air conditioning system, the switching of five operating modes of the system can be realized by controlling the power-on or power-off state of each valve member in the valve assembly, wherein: when heating the radiant floor and the water heater at the same time in winter, different condensing temperatures are set at the end of the indoor heat exchanger to improve the comprehensive heating energy efficiency of the system; when cooling the room and heating the water heater at the same time in summer, the outdoor air first passes through the evaporator of the water heater circulation, thereby reducing the temperature. At this time, the condenser entering the refrigeration cycle as a cold source can greatly improve the refrigeration cycle performance.

Description

Technical Field

[0001] The present invention relates to the field of compressors, and in particular to a compressor module, an air-conditioning system and a control method. Background Art

[0002] When a conventional compressor and air conditioning system supplies heat to both the radiant floor and the water heater in winter, in order to meet the outlet water temperature requirements of the water heater, the system operates at a single high condensing temperature, resulting in a higher outlet water temperature for the radiant floor. Subsequently, water mixing is required to meet the requirements of human comfort, resulting in thermodynamic losses.

[0003] The double-suction double-row compressor system can achieve two different condensing temperatures in the winter heating mode, improving the overall heating energy efficiency of the system; and in the summer cooling mode, it can achieve cooling and heating at the same time, supplying cooling to the room while continuing to supply heat to the water heater.

[0004] However, considering the needs of users, a complete system in actual application includes more than just the above-mentioned working modes. That is, the complete application includes the following five operating modes: 1. Heat the radiant floor and the water heater at the same time in winter; 2. Heat the radiant floor alone in winter; 3. Cool the room and heat the water heater at the same time in summer; 4. Cool the room alone in summer; 5. Only provide hot water. Therefore, the compressor, valve assembly combination module and related systems that realize the switching of the above five operating modes are problems that researchers in this field need to solve urgently.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0006] In view of the problems in the prior art, the purpose of the present invention is to provide a compressor module, an air-conditioning system and a control method. The compressor module of the air-conditioning system of the present invention realizes the switching of five operating modes of the system by setting a valve assembly including multiple three-way valves and multiple four-way valves, and controlling the power-on or power-off state of each valve component in the valve assembly.

[0007] Some embodiments of the present invention provide a compressor module, comprising:

[0008] The compressor body is provided with a first cylinder and a second cylinder which are independent of each other, and a first exhaust port and a second exhaust port;

[0009] A first liquid reservoir is provided with a first air intake port, wherein the first air intake port, the first cylinder, and the first air exhaust port constitute a first air intake and exhaust path of the compressor;

[0010] The second liquid reservoir is provided with a second air intake port, wherein the second air intake port, the second cylinder, and the second air exhaust port constitute a second air intake and exhaust path of the compressor, and the first air intake and exhaust path and the second air intake and exhaust path are relatively independent and sealed from each other;

[0011] A valve assembly, the valve assembly comprising a first three-way valve, a second three-way valve, a first four-way valve, a second four-way valve and a third four-way valve;

[0012] The first air inlet is connected to the a6 end of the second four-way valve;

[0013] The second air inlet is connected to the a2 end of the second three-way valve and the d6 end of the second four-way valve, and the c2 end of the second three-way valve is connected to the c6 end of the second four-way valve;

[0014] The first exhaust port is connected to the a7 end of the third four-way valve;

[0015] The second exhaust port is connected to the a1 end of the first three-way valve, and the a1 end, b1 end and c1 end of the first three-way valve are connected to the d7 end of the third four-way valve, the a5 end of the first four-way valve and the c7 end of the third four-way valve respectively;

[0016] The b2 end of the second three-way valve is connected to the c5 end of the first four-way valve.

[0017] Some embodiments of the present invention further provide an air conditioning system, comprising the compressor module.

[0018] According to some embodiments of the present invention, the air conditioning system further comprises:

[0019] a first heat exchanger, a first throttling device and a second heat exchanger, wherein the b7 end of the third four-way valve, the first heat exchanger, the first throttling device, the second heat exchanger and the b6 end of the second four-way valve are connected; and

[0020] The third three-way valve, the fourth three-way valve, the third heat exchanger, the second throttling device, the fourth heat exchanger and the fifth heat exchanger, the b5 end of the first four-way valve, the third heat exchanger, the second throttling device and the a3 end of the third three-way valve are connected in sequence; the b3 end of the third three-way valve, the fourth heat exchanger and the b4 end of the fourth three-way valve are connected in sequence; the c3 end of the third three-way valve, the fifth heat exchanger and the c4 end of the fourth three-way valve are connected in sequence; the a4 end of the fourth three-way valve is connected to the d5 end of the first four-way valve.

[0021] According to some embodiments of the present invention, the air conditioning system further includes a warm water tank and a first water pump which are sequentially connected to the first heat exchanger to form a loop.

[0022] According to some embodiments of the present invention, the air conditioning system further comprises a floor heating coil and a second water pump which are sequentially connected to the fifth heat exchanger to form a loop.

[0023] According to some embodiments of the present invention, the second heat exchanger, the third heat exchanger and / or the fourth heat exchanger are fin heat exchangers.

[0024] According to some embodiments of the present invention, the first heat exchanger and / or the fifth heat exchanger is a plate heat exchanger.

[0025] According to some embodiments of the present invention, the air-conditioning system also includes a control module, which is used to receive an air-conditioning system operation mode switching instruction and control the power on and off of the first three-way valve, the second three-way valve, the third three-way valve, the fourth three-way valve, the first four-way valve, the second four-way valve and the third four-way valve according to the instruction.

[0026] Some embodiments of the present invention further provide a method for controlling an air conditioning system, wherein the air conditioning system is the above-mentioned air conditioning system, and the method comprises the following steps:

[0027] The control module receives an air conditioning system operation mode switching instruction;

[0028] When the instruction is to switch to mode 1, the control module controls the first three-way valve, the second three-way valve, the second four-way valve and the third four-way valve to be in a power-off state, and the third three-way valve, the fourth three-way valve and the first four-way valve to be in a power-on state;

[0029] When the instruction is to switch to mode 2, the control module controls the first three-way valve and the second three-way valve to be in a power-off state, and the third three-way valve, the fourth three-way valve, the first four-way valve, the second four-way valve and the third four-way valve to be in a power-on state;

[0030] When the instruction is to switch to mode three, the control module controls the first three-way valve, the second three-way valve, the third three-way valve, the fourth three-way valve, the first four-way valve, the second four-way valve and the third four-way valve to be in a power-off state;

[0031] When the instruction is to switch to mode 4, the control module controls the first three-way valve, the second three-way valve, the third three-way valve, the fourth three-way valve, and the first four-way valve to be in the same power state, and the second four-way valve and the third four-way valve are in the power-on state;

[0032] When the instruction is to switch to mode five, the control module controls the third three-way valve, the fourth three-way valve and the first four-way valve to be in a power-off state, and the first three-way valve, the second three-way valve, the second four-way valve and the third four-way valve to be in a power-on state.

[0033] The present invention provides a compressor module, an air-conditioning system and a control method. The compressor module includes a compressor body, a first liquid reservoir, a second liquid reservoir, and a valve assembly. The valve assembly includes a first three-way valve, a second three-way valve, a first four-way valve, a second four-way valve and a third four-way valve.

[0034] The compressor module of the present invention uses a double-suction double-row compressor and is provided with a valve assembly including multiple three-way valves and multiple four-way valves. When it is applied to an air-conditioning system, the system can switch between five operating modes by controlling the power-on or power-off state of each valve component in the valve assembly, namely, a mode of simultaneously heating the radiant floor and the water heater in winter, a mode of heating the radiant floor alone in winter, a mode of simultaneously cooling the room and heating the water heater in summer, a mode of cooling the room alone in summer, and a mode of only providing hot water, wherein: when heating the radiant floor and the water heater at the same time in winter, different condensing temperatures are set at the end of the indoor heat exchanger to improve the comprehensive heating energy efficiency of the system; when cooling the room and heating the water heater at the same time in summer, the outdoor air first passes through the evaporator of the water heater circulation, thereby reducing the temperature. At this time, the condenser entering the refrigeration cycle as a cold source can greatly improve the refrigeration cycle performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, purposes and advantages of the present invention will become more obvious. Obviously, the drawings in the following description are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 It is a structural schematic diagram of a compressor module according to an embodiment of the present invention;

[0037] Figure 2 It is a structural schematic diagram of an air conditioning system according to an embodiment of the present invention when operating in mode 1;

[0038] Figure 3 It is a structural schematic diagram of an air conditioning system according to an embodiment of the present invention when operating in mode 2;

[0039] Figure 4 It is a structural schematic diagram of an air conditioning system according to an embodiment of the present invention when operating in mode three;

[0040] Figure 5 It is a structural schematic diagram of an air conditioning system according to an embodiment of the present invention when operating in mode 4;

[0041] Figure 6 Schematic diagram of the structure of an air conditioning system according to an embodiment of the present invention when operating in mode five.

[0042] Reference numerals

[0043] 110 compressor body

[0044] 111 First exhaust port

[0045] 112 Second exhaust port

[0046] 120 First liquid reservoir

[0047] 121 First air intake

[0048] 130 Second liquid reservoir

[0049] 131 Second air intake

[0050] 141 First three-way valve

[0051] 142 Second three-way valve

[0052] 143 Third three-way valve

[0053] 144 Fourth three-way valve

[0054] 145 first four-way valve

[0055] 146 Second four-way valve

[0056] 147 Third four-way valve

[0057] 210 first heat exchanger

[0058] 220 Third heat exchanger

[0059] 310 First throttling device

[0060] 320 Second throttling device

[0061] 410 Second heat exchanger

[0062] 420 Fourth heat exchanger

[0063] 500 Fifth Heat Exchanger

[0064] 600 floor heating coil

[0065] 710 first water pump

[0066] 720 Second water pump

[0067] 800 Insulated Water Tank DETAILED DESCRIPTION

[0068] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0069] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings represent the same or similar parts, and their repeated descriptions will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities.

[0070] Figure 1 The structure diagram of a compressor module according to an embodiment of the present invention is shown in FIG. 1 . Specifically, the compressor module includes:

[0071] The compressor body 110 is provided with a first cylinder and a second cylinder which are independent of each other, and a first exhaust port 111 and a second exhaust port 112;

[0072] The first liquid reservoir 120 is provided with a first air intake port 121, wherein the first air intake port 121, the first cylinder, and the first air exhaust port 111 constitute a first air intake and exhaust path of the compressor;

[0073] The second liquid reservoir 130 is provided with a second air intake port 131, wherein the second air intake port 131, the second cylinder, and the second air exhaust port 112 constitute a second air intake and exhaust path of the compressor, wherein the first air intake and exhaust path and the second air intake and exhaust path are relatively independent and sealed from each other;

[0074] A valve assembly, the valve assembly comprising a first three-way valve 141, a second three-way valve 142, a first four-way valve 145, a second four-way valve 146 and a third four-way valve 147;

[0075] The first air intake port 121 is connected to the a6 end of the second four-way valve 146;

[0076] The second air inlet 131 is connected to the a2 end of the second three-way valve 142 and the d6 end of the second four-way valve 146, and the c2 end of the second three-way valve 142 is connected to the c6 end of the second four-way valve 146;

[0077] The first exhaust port 111 is connected to the a7 end of the third four-way valve 147;

[0078] The second exhaust port 112 is connected to the a1 end of the first three-way valve 141, and the a1 end, b1 end and c1 end of the first three-way valve 141 are respectively connected to the d7 end of the third four-way valve 147, the a5 end of the first four-way valve 145 and the c7 end of the third four-way valve 147;

[0079] The b2 end of the second three-way valve 142 is connected to the c5 end of the first four-way valve 145 .

[0080] The b5 end and the d5 end of the first four-way valve 145 , the b6 end of the second four-way valve 146 , and the b7 end of the third four-way valve 147 are all reserved interfaces.

[0081] It should be noted that the first three-way valve 141, the second three-way valve 142, the first four-way valve 145, the second four-way valve 146 and the third four-way valve 147 can be controlled by the control module to be in a power-on or power-off state. The three-way valve and the four-way valve are respectively a three-way reversing valve and a four-way reversing valve. The three-way valve has an a terminal, a b terminal and a c terminal. When the power is on, the a terminal and the c terminal of the three-way valve are connected; when the power is off, the a terminal and the b terminal are connected. The four-way valve has an a terminal, a b terminal, a c terminal and a d terminal. When the power is on, the a terminal and the d terminal of the four-way valve are connected, and the b terminal and the c terminal are connected; when the power is off, the a terminal and the b terminal are connected, and the c terminal and the b terminal are connected.

[0082] Figures 2 to 6 It is a schematic structural diagram of an air-conditioning system according to an embodiment of the present invention, wherein the air-conditioning system includes the above-mentioned compressor module. Figures 2 to 6 The solid line is the pipeline through which the medium flows, and the dotted line is the pipeline through which the medium does not flow.

[0083] In some embodiments, the air conditioning system further comprises:

[0084] The first heat exchanger 210, the first throttling device 310 and the second heat exchanger 410, the b7 end of the third four-way valve, the first heat exchanger 210, the first throttling device 310, the second heat exchanger 410 and the b6 end of the second four-way valve 146 are connected; and

[0085] The third three-way valve 143, the fourth three-way valve 144, the third heat exchanger 220, the second throttling device 320, the fourth heat exchanger 420 and the fifth heat exchanger 500, the b5 end of the first four-way valve 145, the third heat exchanger 220, the second throttling device 320, and the a3 end of the third three-way valve 143 are connected in sequence; the b3 end of the third three-way valve 143, the fourth heat exchanger 420 and the b4 end of the fourth three-way valve 144 are connected in sequence; and, the c3 end of the third three-way valve 143, the fifth heat exchanger 500, and the c4 end of the fourth three-way valve 144 are connected in sequence; the a4 end of the fourth three-way valve 144 is connected to the d5 end of the first four-way valve 145. Preferably, the second heat exchanger 410, the third heat exchanger 220 and / or the fourth heat exchanger 420 are fin heat exchangers; the first heat exchanger 210 may be a plate heat exchanger or other heat exchangers.

[0086] The air conditioning system further includes a warm water tank 800 and a first water pump 710 which are sequentially connected to the first heat exchanger 210 .

[0087] Furthermore, the air conditioning system also includes a floor heating coil 600 and a second water pump 720 which are sequentially connected to the fifth heat exchanger 500 to form a loop.

[0088] The fifth heat exchanger 500 may be a plate heat exchanger or other heat exchangers.

[0089] Since the power on and off of the first to fourth three-way valves and the first to third four-way valves can be controlled, the air conditioning system can also include a control module, which is used to receive the air conditioning system operation mode switching instruction and control the power on and off of the first three-way valve, the second three-way valve, the third three-way valve, the fourth three-way valve, the first four-way valve, the second four-way valve and the third four-way valve according to the instruction. At the same time, the power on / off state of each of the above-mentioned electronic valves can also be controlled by program setting, and the conversion between the operation modes of the air conditioning system of the present invention can be realized through program setting control.

[0090] Some embodiments of the present invention further provide a method for controlling an air conditioning system, wherein the air conditioning system is the above-mentioned air conditioning system, and the method comprises the following steps:

[0091] The control module receives an air conditioning system operation mode switching instruction;

[0092] When the instruction is to switch to mode 1, the control module controls the first three-way valve, the second three-way valve, the second four-way valve and the third four-way valve to be in a power-off state, and the third three-way valve, the fourth three-way valve and the first four-way valve to be in a power-on state;

[0093] When the instruction is to switch to mode 2, the control module controls the first three-way valve and the second three-way valve to be in a power-off state, and the third three-way valve, the fourth three-way valve, the first four-way valve, the second four-way valve and the third four-way valve to be in a power-on state;

[0094] When the instruction is to switch to mode three, the control module controls the first three-way valve, the second three-way valve, the third three-way valve, the fourth three-way valve, the first four-way valve, the second four-way valve and the third four-way valve to be in a power-off state;

[0095] When the instruction is to switch to mode 4, the control module controls the first three-way valve, the second three-way valve, the third three-way valve, the fourth three-way valve, and the first four-way valve to be in a power-off state, and the second four-way valve and the third four-way valve to be in a power-on state;

[0096] When the instruction is to switch to mode 5, the control module controls the third three-way valve, the fourth three-way valve and the first four-way valve to be in a power-off state, and the first three-way valve, the second three-way valve, the second four-way valve and the third four-way valve to be in a power-on state. Specifically, the power-on / power-off state of each electronic valve in each mode is shown in Table 1.

[0097] Table 1 shows the power on / off status of each electronic valve in each mode.

[0098]

[0099]

[0100] Furthermore, Figures 2 to 6 Schematic diagrams of the structure of an air conditioning system according to an embodiment of the present invention when operating in mode 1, mode 2, mode 3, mode 4 and mode 5, respectively, and the power-on / power-off states of each electronic valve in each mode are also shown in FIG. Figures 2 to 6 In order to further understand the air conditioning system of the present invention, the functions implemented by each mode are described below in combination with the power-on / power-off states of each electronic valve in each mode.

[0101] Mode 1: the first three-way valve, the second three-way valve, the second four-way valve and the third four-way valve are all in a power-off state, and the third three-way valve, the fourth three-way valve and the first four-way valve are all in a power-on state.

[0102] Cycle 1 in mode 1 supplies heat to the water heater. At this time, the refrigerant at the outlet of the first exhaust port 111 of the compressor body is discharged through the b7 end of the third four-way valve 147, passes through the first heat exchanger 210, the first throttling device 310, and the second heat exchanger 410 in sequence, returns to the b6 end of the second four-way valve 146, and then returns to the first intake port 121 of the compressor body.

[0103] More specifically, the refrigerant at the outlet of the first exhaust port 111 of the compressor body enters the a7 end of the third four-way valve 147 and then is discharged from the b7 end of the third four-way valve 147;

[0104] The returned refrigerant enters the b6 end of the second four-way valve 146 , and returns to the first suction port 121 from the a6 end of the second four-way valve 146 .

[0105] In mode 1, the fifth heat exchanger 500, the floor heating coil 600 and the second water pump 720 form a loop 2 to heat the radiant floor. Figure 2 The exhaust gas at the outlet of the second exhaust port 112 of the compressor body is discharged through the d5 end of the first four-way valve 145 under the restriction of the valve assembly, and passes through the fourth three-way valve 144, the fifth heat exchanger 500, the third three-way valve 143, the second throttling device 320, and the third heat exchanger 220 in sequence, returns to the b5 end of the first four-way valve 145, and then returns to the second intake port 131 of the compressor body.

[0106] In mode 1, the refrigerant at the outlet of the second exhaust port 112 of the compressor body enters the a1 end of the first three-way valve 141, flows out from the b1 end of the first three-way valve 141, then enters the a5 end of the first four-way valve 145, and is discharged from the d5 end of the first four-way valve 145;

[0107] The returned refrigerant enters the b5 end of the first four-way valve 145, flows out from the c5 end of the first four-way valve 145, then enters the b2 end of the second three-way valve 142, and returns to the second air intake port 131 of the compressor body from the a2 end of the second three-way valve 142. Mode 1 can be used in winter to achieve simultaneous heating of the radiant floor and the water heater.

[0108] Mode 2: the first three-way valve and the second three-way valve are both in the power-off state, and the third three-way valve, the fourth three-way valve, the first four-way valve, the second four-way valve and the third four-way valve are all in the power-on state.

[0109] Cycle 1 bypass visible in mode 2 Figure 3 The dotted line loop.

[0110] The fifth heat exchanger 500, the floor heating coil 600 and the second water pump 720 in mode 2 form a loop 2 to heat the radiant floor. Figure 3The refrigerants at the outlets of the first exhaust port 111 and the second exhaust port 112 of the compressor body are mixed and flow through the first three-way valve 141 and the first four-way valve 145, and are discharged through the d5 end of the first four-way valve 145, and then pass through the fourth three-way valve 144, the fifth heat exchanger 500, the third three-way valve 143, the second throttling device 320, and the third heat exchanger 220 in sequence to return to the b5 end of the first four-way valve 145, and then are separated after passing through the first four-way valve 145 and the second three-way valve 142, and enter the first air intake port 121 and the second air intake port 131 respectively;

[0111] In mode 2, part of the refrigerant flows out of the first exhaust port 111 and enters the a7 end of the third four-way valve 147, and flows out from the d7 end of the third four-way valve 147, and then the part of the refrigerant is mixed with another part of the refrigerant flowing out of the second exhaust port 112. The mixed refrigerant enters the a1 end of the first three-way valve 141, and flows out from the b1 end of the first three-way valve 141, and then enters the a5 end of the first four-way valve 145, and is discharged from the d5 end of the first four-way valve 145.

[0112] The mixed refrigerant returning to the b5 end of the first four-way valve 145 flows out from the c5 end of the first four-way valve 145, and then enters the b2 end of the second three-way valve 142. After flowing out from the a2 end of the second three-way valve 142, it is divided into two parts, one part returns to the second air intake port 131 of the compressor body, and the other part enters the d6 end of the second four-way valve 146, and returns to the first air intake port 121 of the compressor body after flowing out from the a6 end of the second four-way valve 146.

[0113] Mode 2 can provide heating to the radiant floor alone in winter.

[0114] Mode three: the first three-way valve, the second three-way valve, the third three-way valve, the fourth three-way valve, the first four-way valve, the second four-way valve and the third four-way valve are all in a power-off state.

[0115] The cycle 1 of mode 3 supplies heat to the water heater. The refrigerant at the outlet of the first exhaust port 111 of the compressor body is discharged through the a7 end of the third four-way valve 147, passes through the first heat exchanger 210, the first throttling device 310, and the second heat exchanger 410 in sequence, returns to the b6 end of the second four-way valve 146, and then returns to the first air intake port 121 of the compressor body.

[0116] Specifically, the refrigerant at the outlet of the first exhaust port 111 of the compressor body enters the a7 end of the third four-way valve 147 and is then discharged from the b7 end of the third four-way valve 147; the refrigerant returning to b6 of the second four-way valve 146 returns to the first intake port 121 from the a6 end of the second four-way valve 146.

[0117] Cycle 2 of mode 3 provides cooling to the room. The refrigerant at the outlet of the second exhaust port 112 of the compressor body is discharged through the b5 end of the first four-way valve 145, passes through the third heat exchanger 220, the second throttling device 320, the third three-way valve 143, the fourth heat exchanger 420, the fourth three-way valve 144, and the d5 end of the first four-way valve 145 in sequence, and then returns to the second air intake port 131;

[0118] Specifically, the refrigerant at the outlet of the second exhaust port 112 of the compressor body enters the a1 end of the first three-way valve 141, flows out from the b1 end of the first three-way valve 141, then enters the a5 end of the first four-way valve 145, and is discharged from the b5 end of the first four-way valve 145;

[0119] The refrigerant returned to the d5 end of the first four-way valve 145 flows out from the c5 end of the first four-way valve 145 , then enters the b2 end of the second three-way valve 142 , and returns to the second air intake port 131 from the a2 end of the second three-way valve 142 .

[0120] Mode 3 can be used in summer to provide cooling to the room and heating to the water heater at the same time.

[0121] Mode 4: the control module controls the first three-way valve, the second three-way valve, the third three-way valve, the fourth three-way valve, and the first four-way valve to be in a power-off state, and the second four-way valve and the third four-way valve to be in a power-on state;

[0122] Mode 4 loop 1 bypass visible Figure 5 The dotted line loop.

[0123] Mode 4 cycle 2 cools the room, see Figure 5 The refrigerants at the outlets of the first exhaust port 111 and the second exhaust port 112 of the compressor body are mixed and flow through the first three-way valve 141 and the first four-way valve 145, and are discharged through the b5 end of the first four-way valve 145, and then pass through the third heat exchanger 220, the second throttling device 320, the third three-way valve 143, the fourth heat exchanger 420, and the fourth three-way valve 144 in sequence to return to the d5 end of the first four-way valve 145, and then are divided after passing through the first four-way valve 145 and the second three-way valve 142, and enter the first air intake port 121 and the second air intake port 131 of the compressor body respectively.

[0124] In mode 4, part of the refrigerant flows out of the first exhaust port 111 and enters the a7 end of the third four-way valve 147, and flows out from the d7 end of the third four-way valve 147, and then the part of the refrigerant is mixed with another part of the refrigerant flowing out of the second exhaust port 112, and the mixed refrigerant enters the a1 end of the first three-way valve 141, and flows out from the b1 end of the first three-way valve 141, and then enters the a5 end of the first four-way valve 145, and is discharged from the b5 end of the first four-way valve 145;

[0125] The mixed refrigerant returning to the d5 end of the first four-way valve 145 flows out from the c5 end of the first four-way valve 145, then enters the b2 end of the second three-way valve 142, and is divided into two parts after flowing out from the a2 end of the second three-way valve 142, one part returns to the second air intake port 131, and the other part enters the d6 end of the second four-way valve 146, and returns to the first air intake port 121 after flowing out from the a6 end of the second four-way valve 146.

[0126] Mode 4 is used in summer to provide cooling to individual rooms.

[0127] Mode 5: the third three-way valve, the fourth three-way valve and the first four-way valve are all in a power-off state, and the first three-way valve, the second three-way valve, the second four-way valve and the third four-way valve are all in a power-on state.

[0128] Cycle 1 of mode 5 supplies heat to the water heater. The refrigerants at the outlets of the first exhaust port 111 and the second exhaust port 112 of the compressor body are mixed and flow through the first three-way valve 141 and the third four-way valve 147, and are discharged from the b7 end of the third four-way valve 147, and then pass through the first heat exchanger 210, the first throttling device 310, and the second heat exchanger 410 in sequence to return to the b6 end of the second four-way valve 146, and then are split after passing through the second four-way valve 146 and the second three-way valve 142, and enter the first air intake port 121 and the second air intake port 131 respectively;

[0129] Specifically, part of the refrigerant flows out from the first exhaust port 111 and enters the a7 end of the third four-way valve 147, and flows out from the d7 end of the third four-way valve 147, and then the part of the refrigerant is mixed with another part of the refrigerant flowing out from the second exhaust port 112, and the mixed refrigerant enters the a1 end of the first three-way valve 141, and flows out from the c1 end of the first three-way valve 141, and then enters the c7 end of the third four-way valve 147, and is discharged from the b7 end of the third four-way valve 147;

[0130] The mixed refrigerant returning to the b6 end of the second four-way valve 146 flows out from the c6 end of the second four-way valve 146, then enters the c2 end of the second three-way valve 142, and is divided into two parts after flowing out from the a2 end of the second three-way valve 142, one part returns to the second air intake port 131, and the other part enters the d6 end of the second four-way valve 146, and returns to the first air intake port 121 after flowing out from the a6 end of the second four-way valve 146.

[0131] Mode 5 loop 2 bypass visible Figure 6 The dotted line loop. Mode 5 realizes only providing hot water. The functions realized by each mode of the air conditioning system of the present invention are shown in Table 2

[0132] Table 2 shows the functions implemented in each mode.

[0133]

[0134]

[0135] In summary, the compressor module of the present invention uses a double-suction double-row compressor and is provided with a valve assembly including multiple three-way valves and multiple four-way valves. When it is applied to an air-conditioning system, the system can switch between five operating modes by controlling the power-on or power-off state of each valve component in the valve assembly, namely, a heating mode for both the radiant floor and the water heater in winter, a heating mode for the radiant floor alone in winter, a cooling mode for both the room and the water heater in summer, a cooling mode for the room alone in summer, and a hot water only mode, wherein: when heating the radiant floor and the water heater at the same time in winter, different condensing temperatures are set at the end of the indoor heat exchanger to improve the comprehensive heating energy efficiency of the system; when cooling the room and heating the water heater at the same time in summer, the outdoor air first passes through the evaporator of the water heater circulation, thereby reducing the temperature. At this time, the condenser entering the refrigeration cycle as a cold source can greatly improve the performance of the refrigeration cycle.

[0136] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present application is defined by the attached claims rather than the above description, so it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims in the present application. Any figure mark in the claims should not be regarded as limiting the claims involved. In addition, it is obvious that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices stated in the device claim can also be implemented by one unit or device through software or hardware. It should be understood that the terms "below" or "above", "downward" or "upward" are used to describe the features of the exemplary embodiments with reference to the positions shown in the figures; the words first, second, etc. are used to indicate the names, and do not indicate any particular order.

Claims

1. An air conditioning system, characterized in that: A compressor module is included, the compressor module comprising: The compressor body is provided with a first cylinder and a second cylinder which are independent of each other, and a first exhaust port and a second exhaust port; A first liquid reservoir is provided with a first air intake port, wherein the first air intake port, the first cylinder, and the first air exhaust port constitute a first air intake and exhaust path of the compressor; The second liquid reservoir is provided with a second air intake port, wherein the second air intake port, the second cylinder, and the second air exhaust port constitute a second air intake and exhaust path of the compressor, and the first air intake and exhaust path and the second air intake and exhaust path are relatively independent and sealed from each other; A valve assembly, the valve assembly comprising a first three-way valve, a second three-way valve, a first four-way valve, a second four-way valve and a third four-way valve; The first air inlet is connected to the a6 end of the second four-way valve; The second air inlet is connected to the a2 end of the second three-way valve and the d6 end of the second four-way valve, and the c2 end of the second three-way valve is connected to the c6 end of the second four-way valve; The first exhaust port is connected to the a7 end of the third four-way valve; The second exhaust port is connected to the a1 end of the first three-way valve, and the a1 end, b1 end and c1 end of the first three-way valve are connected to the d7 end of the third four-way valve, the a5 end of the first four-way valve and the c7 end of the third four-way valve respectively; The b2 end of the second three-way valve is connected to the c5 end of the first four-way valve; The air conditioning system further comprises: a first heat exchanger, a first throttling device and a second heat exchanger, wherein the b7 end of the third four-way valve, the first heat exchanger, the first throttling device, the second heat exchanger and the b6 end of the second four-way valve are connected; and The third three-way valve, the fourth three-way valve, the third heat exchanger, the second throttling device, the fourth heat exchanger and the fifth heat exchanger, the b5 end of the first four-way valve, the third heat exchanger, the second throttling device and the a3 end of the third three-way valve are connected in sequence; the b3 end of the third three-way valve, the fourth heat exchanger and the b4 end of the fourth three-way valve are connected in sequence; the c3 end of the third three-way valve, the fifth heat exchanger and the c4 end of the fourth three-way valve are connected in sequence; the a4 end of the fourth three-way valve is connected to the d5 end of the first four-way valve; The air conditioning system further comprises a warm water tank and a first water pump which are sequentially connected to the first heat exchanger and form a loop; The air conditioning system also includes a floor heating coil and a second water pump which are sequentially connected to the fifth heat exchanger to form a loop.

2. The air conditioning system according to claim 1, characterized in that: The second heat exchanger, the third heat exchanger and / or the fourth heat exchanger are fin heat exchangers.

3. The air conditioning system according to claim 1, characterized in that: The first heat exchanger and / or the fifth heat exchanger is a plate heat exchanger.

4. The air conditioning system according to claim 1, characterized in that: It also includes a control module, which is used to receive an air-conditioning system operation mode switching instruction and control the power on and off of the first three-way valve, the second three-way valve, the third three-way valve, the fourth three-way valve, the first four-way valve, the second four-way valve and the third four-way valve according to the instruction.

5. A control method for an air conditioning system, characterized in that: The air conditioning system is the air conditioning system according to claim 4, and the method comprises the following steps: The control module receives an air conditioning system operation mode switching instruction; When the instruction is to switch to mode 1 operation, the control module controls the first three-way valve, the second three-way valve, the second four-way valve and the third four-way valve to be in a power-off state, and the third three-way valve, the fourth three-way valve and the first four-way valve to be in a power-on state; When the instruction is to switch to mode 2, the control module controls the first three-way valve and the second three-way valve to be in a power-off state, and the third three-way valve, the fourth three-way valve, the first four-way valve, the second four-way valve and the third four-way valve to be in a power-on state; When the instruction is to switch to mode three, the control module controls the first three-way valve, the second three-way valve, the third three-way valve, the fourth three-way valve, the first four-way valve, the second four-way valve and the third four-way valve to be in a power-off state; When the instruction is to switch to mode 4, the control module controls the first three-way valve, the second three-way valve, the third three-way valve, the fourth three-way valve, and the first four-way valve to be in a power-off state, and the second four-way valve and the third four-way valve to be in a power-on state; When the instruction is to switch to mode five, the control module controls the third three-way valve, the fourth three-way valve and the first four-way valve to be in a power-off state, and the first three-way valve, the second three-way valve, the second four-way valve and the third four-way valve to be in a power-on state.

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