Air conditioner and temperature adjustment system thereof

Abstract

The application discloses an air conditioner and a temperature regulating system thereof. The temperature regulating system comprises a circulating loop, a first heat exchanger and a second heat exchanger connected to the circulating loop, and further comprises a first bypass branch, a second bypass branch, a third bypass branch, a first valve, a second valve and a third valve. The second heat exchanger, the inlet of the second bypass branch, the outlet of the first bypass branch, the outlet of the second bypass branch and the outlet of the third bypass branch are sequentially arranged. The temperature regulating refrigeration system provided by the application adopts a two-way energy-saving temperature compensation and multi-stage temperature control mode, ensures the requirements for temperature precision and stability, and can also realize rapid temperature regulation, which is beneficial to energy saving.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioning equipment, in particular to a temperature regulating system. In addition, the present application also relates to an air conditioner comprising the above-mentioned temperature regulating system. BACKGROUND

[0002] In the prior art, a high-precision temperature control air conditioning cooling system is disclosed in CN 105 1 1 1 1 1 1 1 A, the first outlet of a first heat exchanger 01 is connected with the first inlet of a second heat exchanger 02, the first outlet of the second heat exchanger 02 is connected with the first inlet of the first heat exchanger 01 in sequence through a heater 03 and a thermal buffer 04, the first heat exchanger 01 is a terminal heat exchanger, after heat exchange with an external environment or equipment, the temperature of the medium in the first heat exchanger 01 is increased, the high-temperature medium flows back to the second heat exchanger 02, is cooled again in the second heat exchanger 02, and is re-injected into the first heat exchanger 01 through the action of the heater 03 and the thermal buffer 04 to cool the external environment or equipment. Figure 1

[0003] In the field of high-precision temperature control air conditioning cooling, in order to achieve precise temperature regulation, the temperature of the medium is first reduced to a temperature lower than the target temperature value through a heat exchanger, and then high-precision temperature regulation is achieved by slowly heating through electric heating, that is, when the temperature is reduced to a temperature close to the required critical temperature, micro-heat conduction is performed by energizing the electric heater to quickly achieve the standard temperature and small fluctuations.

[0004] However, the existing technology uses electric heating for temperature regulation, which has the following disadvantages: first, the use of an electric heater as a power consumption device increases the loss of the entire system, and in the future, as the requirement for energy efficiency becomes higher and higher, the simple electric heating method is not conducive to energy saving, and therefore is not conducive to reducing energy consumption; second, when the temperature of the system is higher than the target temperature value by using the electric heating method, the system cannot be adjusted back, and only the part of the heat can be bypassed or transmitted to the load end to cause fluctuations in the temperature of the load; third, if the load of the system increases rapidly, the one-way compensation method is not easy to quickly achieve, and the subsequent system cycle is required to obtain low temperature at the evaporation end of the heat exchanger, and then the temperature compensation can be achieved, which is slow in response speed.

[0005] Therefore, how to quickly achieve temperature compensation is a technical problem to be solved by those skilled in the art at present. SUMMARY

[0006] The purpose of the present application is to provide a temperature regulating system that can quickly achieve temperature compensation. Another purpose of the present application is to provide an air conditioner comprising the above-mentioned temperature regulating system.

[0007] To achieve the above-mentioned purposes, the present application provides the following technical solutions:

[0008] ​A temperature regulating system, comprising a circulating loop and a first heat exchanger and a second heat exchanger connected in the circulating loop, further comprising:

[0009] a first bypass branch, an inlet of the first bypass branch being connected with a first inlet of the second heat exchanger, an outlet of the first bypass branch being connected with a first outlet of the second heat exchanger;

[0010] a second bypass branch, an inlet of the second bypass branch being connected with the first outlet of the second heat exchanger, an outlet of the second bypass branch being connected with a first inlet of the first heat exchanger;

[0011] a third bypass branch, an inlet of the third bypass branch being communicated with the inlet of the first bypass branch, an outlet of the third bypass branch being connected with the outlet of the second bypass branch;

[0012] the second heat exchanger, the inlet of the second bypass branch, the outlet of the first bypass branch, the outlet of the second bypass branch, and the outlet of the third bypass branch are sequentially arranged in order;

[0013] a first valve is arranged in the first bypass branch, a second valve is arranged in the second bypass branch, and a third valve is arranged in the third bypass branch.

[0014] Preferably, a first temperature sensor is arranged between the first outlet of the second heat exchanger and the inlet of the second bypass branch, a second temperature sensor is arranged between the outlet of the first bypass branch and the outlet of the second bypass branch, and the first valve and the third valve are respectively arranged as flow regulating valves.

[0015] Preferably, the first temperature sensor has an accuracy of ±0.3 degrees or less, the second temperature sensor has an accuracy of ±0.1 degrees or less, and the first valve, the second valve, and the third valve all have an accuracy of 1% or less.

[0016] Preferably, a third temperature sensor or a first pressure sensor for monitoring changes in the load of the first heat exchanger, and / or a fourth temperature sensor or a second pressure sensor are further included, the third temperature sensor or the first pressure sensor is arranged at the first inlet of the first heat exchanger, and the fourth temperature sensor or the second pressure sensor is arranged at the first outlet of the first heat exchanger.

[0017] Preferably, the system further comprises a first mixer and a second mixer, the outlet of the first bypass branch and the first outlet of the second heat exchanger are connected to the inlet of the first mixer, the outlet of the first mixer is connected to the outlet of the second bypass branch; the outlet of the third bypass branch and the outlet of the second bypass branch are connected to the inlet of the second mixer, the outlet of the second mixer is connected to the first inlet of the first heat exchanger.

[0018] Preferably, the system further comprises a heat buffer connected between the first inlet of the first heat exchanger and the outlet of the second mixer.

[0019] Preferably, the system further comprises a third heat exchanger; the outlet medium of the first bypass branch can be mixed with the first outlet medium of the second heat exchanger to become a first mixed medium, the first inlet of the third heat exchanger can be provided for the first mixed medium to flow in, and the first outlet of the third heat exchanger is connected to the outlet of the second bypass branch.

[0020] Preferably, the second heat exchanger comprises a first cooling pipeline, and the third heat exchanger comprises a second cooling pipeline, the inlet of the second cooling pipeline is connected to the inlet of the first cooling pipeline, and the outlet of the second cooling pipeline is connected to the outlet of the first cooling pipeline.

[0021] Preferably, a fourth valve is arranged on the second cooling pipeline.

[0022] The application further provides an air conditioner comprising the temperature regulating system.

[0023] The temperature regulating system provided by the application, by introducing the first bypass branch, the second bypass branch and the third bypass branch, and each bypass branch being provided with a valve, when the medium temperature of the first outlet in the second heat exchanger is lower than the target temperature value, the high-temperature medium from the first outlet in the first heat exchanger is introduced through the first bypass branch to form a first mixed medium, since the medium temperature of the first outlet in the first heat exchanger is higher, the medium of the first outlet in the second heat exchanger can be warmed; when the first mixed medium temperature is higher than the target temperature value, the low-temperature medium from the first outlet in the second heat exchanger is introduced through the second bypass branch, since the medium temperature of the first outlet in the second heat exchanger is lower, the first mixed medium can be cooled to form a second mixed medium; after one-stage warming and one-stage cooling, the medium temperature is close to the target temperature value, at this time, in order to further precisely regulate the temperature of the second mixed medium, the temperature precision of the second mixed medium can reach the target temperature value of the target precision, the high-temperature medium in the first bypass branch can be introduced through the third bypass branch to further adjust the temperature precision of the second mixed medium to form a third mixed medium, wherein the temperature precision of the third mixed medium can be adjusted to ±0.1 degree and within, and most preferably, the temperature precision of the third mixed medium can be adjusted to ±0.03 degree and within; the temperature regulating refrigeration system adopts the mode of two-way temperature compensation and multi-stage compensation, that is, one-stage high-temperature compensation utilizes the wasted high-temperature heat source in the system, one-stage low-temperature compensation utilizes the low-temperature cold source in the system, and after one-stage low-temperature compensation, two-stage high-temperature compensation is preferentially performed, to ensure the demand for temperature precision and stability, and meanwhile, the temperature can be quickly regulated, which is beneficial to energy saving.

[0024] In a preferred embodiment, a third heat exchanger is further included; the outlet medium of the first bypass branch can be mixed with the first outlet medium of the second heat exchanger to become a first mixed medium, the first inlet of the third heat exchanger can be provided for the first mixed medium to flow in, and the first outlet of the third heat exchanger is connected with the outlet of the second bypass branch. Through the introduction of the third heat exchanger, when the temperature of the first mixed medium is higher than the target temperature value, the low-temperature medium of the first outlet in the second heat exchanger can be introduced through the second bypass branch to achieve cooling, or external medium can be introduced through the third heat exchanger to achieve cooling, or both cooling modes are used; in this way, the precision, efficiency and stability of medium temperature regulation can be further improved.

[0025] The air conditioner provided by the application is provided with the above-mentioned temperature regulating system, and since the temperature regulating system has the above-mentioned technical effects, the air conditioner provided with the temperature regulating system should also have corresponding technical effects. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or the prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only aim to some embodiments of the present application, and other drawings can be obtained by those of ordinary skill in the art without any creative effort.

[0027] Figure 1 Fig. 1 is a structural schematic diagram of a refrigeration system in the prior art;

[0028] Figure 2 Fig. 2 is a structural schematic diagram of an embodiment of the temperature-regulating refrigeration system provided by the present application;

[0029] In the figure, 1 is a first heat exchanger, 2 is a second heat exchanger, 21 is a first temperature sensor, 22 is a second temperature sensor, 3 is a first bypass branch, 31 is a first valve, 32 is a flow sensor, 4 is a second bypass branch, 41 is a second valve, 5 is a first mixer, 6 is a third heat exchanger, 61 is a fourth valve, 7 is a thermal buffer, 8 is a second mixer, 81 is a third bypass branch, 82 is a third valve, and 9 is a circulating pump. DETAILED DESCRIPTION

[0030] The core of the present application is to provide a temperature-regulating refrigeration system with low energy consumption, fast response, high temperature-regulating precision and good stability. Another core of the present application is to provide an air conditioner comprising the above-mentioned temperature-regulating refrigeration system.

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort belong to the scope of protection of the present application.

[0032] The temperature regulating refrigeration system provided by the application introduces the first bypass branch 3, the second bypass branch 4 and the third bypass branch 81 to introduce the high-temperature medium at the first outlet of the first heat exchanger 1 into the first outlet of the second heat exchanger 2 to form the first mixed medium, or to introduce the low-temperature medium at the first outlet of the second heat exchanger 2 into the first mixed medium to form the second mixed medium, or to introduce the high-temperature medium at the first outlet of the first heat exchanger 1 after the two-way high-low temperature regulation to realize the two-way temperature compensation and the multi-stage temperature control in the system, save the adjustment cost of the system, further improve the control precision, and adjust the temperature precision of the medium to be within ±0.1 degrees, and most preferably, to be within ±0.03 degrees, and finally deliver the medium with the target temperature value into the first inlet of the first heat exchanger 1. The circulation loop in the temperature regulating refrigeration system can refer to the structure of a conventional cooling system.

[0033] Please refer to Figure 2 , Figure 2 The structure schematic diagram of the temperature regulating refrigeration system provided by the application is shown in the embodiment.

[0034] In the embodiment, the temperature regulating refrigeration system includes a circulation loop, a first heat exchanger 1 and a second heat exchanger 2 connected to the circulation loop, and further includes:

[0035] The first bypass branch 3, the second bypass branch 4 and the third bypass branch 81.

[0036] The inlet of the first bypass branch 3 is connected to the first inlet of the second heat exchanger 2, and the outlet of the first bypass branch 3 is connected to the first outlet of the second heat exchanger 2 to form the first mixed medium; the inlet of the second bypass branch 4 is connected to the first outlet of the second heat exchanger 2, and the outlet of the second bypass branch 4 is connected to the first inlet of the first heat exchanger 1, so that the medium in the second bypass branch 4 is mixed with the first mixed medium to form the second mixed medium; the inlet of the third bypass branch 81 is communicated with the first bypass branch 3, and the outlet of the third bypass branch 81 is connected to the outlet of the second bypass branch 4, so that the medium in the third bypass branch 81 is mixed with the second mixed medium to form the third mixed medium, and the third mixed medium flows into the first heat exchanger 1; wherein the second heat exchanger 2, the inlet of the second bypass branch 4, the outlet of the first bypass branch 3, the outlet of the second bypass branch 4 and the outlet of the third bypass branch 81 are sequentially arranged.

[0037] Further, the first valve 31, the second valve 41 and the third valve 82 are further included, the first valve 31 is arranged in the first bypass branch 3, the second valve 41 is arranged in the second bypass branch 4, and the third valve 82 is arranged in the third bypass branch 81; and a controller can be further included, which can be used to control the opening and closing of the first valve 31, the second valve 41 and the third valve 82 respectively, the first valve 31, the second valve 41 and the third valve 82 are electronic valves, of course, the first valve 31, the second valve 41 and the third valve 82 can also be opened and closed manually, at this time, the first valve 31, the second valve 41 and the third valve 82 can be mechanical valves, preferably, the opening and closing of the first valve 31, the second valve 41 and the third valve 82 can be controlled by the controller.

[0038] The first temperature sensor 21 and the second temperature sensor 22 can be further included, the first temperature sensor 21 is arranged between the first outlet of the second heat exchanger 2 and the inlet of the second bypass branch 4, and the second temperature sensor 22 is arranged between the outlet of the first bypass branch 3 and the outlet of the second bypass branch 4, it should be noted that the second temperature sensor 22 should be arranged on the pipeline after the first mixed medium is mixed, and the second temperature sensor 22 is used to detect the temperature of the first mixed medium; wherein the first valve 31 and the third valve 82 are flow regulating valves, because the medium temperature at the first inlet of the second heat exchanger 2 is greatly different from the medium temperature at the first outlet thereof, that is, the medium temperature at the first inlet of the second heat exchanger 2 is relatively high, therefore, by setting the first valve 31 and the third valve 82 as flow regulating valves with adjustable opening degree, the flow rates of the first bypass branch 3 and the third bypass branch 81 can be small, for example, the medium flow rate of the first bypass branch 3 can be (0.1-10) % of the medium flow rate at the first outlet of the first heat exchanger 1, and the medium flow rate of the third bypass branch 81 can be (0.1-10) % of the medium flow rate of the first bypass branch 3, in this way, the slow mixing of the small flow rate with the medium at the first outlet of the second heat exchanger 2 can achieve the purpose of precise temperature adjustment, wherein the temperature precision of the medium can be adjusted to ±0.1 degree or less, and most preferably, the temperature precision of the medium can be adjusted to ±0.03 degree or less.

[0039] Because the medium temperature at the first outlet of the second heat exchanger 2 is not greatly different from the temperature of the first mixed medium after mixing with the first bypass branch 3, therefore, the second valve 41 can be set as a common valve, of course, in order to achieve precise temperature adjustment, the second valve 41 can also be set as a flow regulating valve with adjustable opening degree, which can further achieve the purpose of precise temperature adjustment.

[0040] Optionally, in order to achieve high precision temperature regulation, the accuracy of the first temperature sensor 21 is ±0.3 degrees or less, the accuracy of the second temperature sensor 22 is ±0.1 degrees or less, and the accuracy of the first valve 31, the second valve 41 and the third valve 82 is 1% or less, wherein, preferably, the accuracy of the first temperature sensor 21 and the second temperature sensor 22 is ±0.03 degrees or less; so that the accuracy of each temperature sensor and valve matches the temperature control accuracy of the system.

[0041] When the first temperature sensor 21 detects that the medium temperature at the first outlet of the second heat exchanger 2 is lower than the target temperature value, the high-temperature medium at the first inlet of the second heat exchanger 2 is bypassed to the outlet of the first bypass branch 3 by controlling the opening of the first valve 31, and mixed with the low-temperature medium at the first outlet of the second heat exchanger 2, so as to warm up the medium at the first outlet of the second heat exchanger 2 to reach the target temperature value.

[0042] When the second temperature sensor 22 detects that the temperature of the first mixed medium is higher than the target temperature value, the low-temperature medium at the first outlet of the second heat exchanger 2 is bypassed to the outlet of the second bypass branch 4 by controlling the opening of the second valve 41 or controlling the opening of the second valve 41, and mixed with the first mixed medium, so as to cool down the first mixed medium to form a second mixed medium, so that the temperature of the second mixed medium reaches the target temperature value.

[0043] After the high-low temperature regulation in both directions, the high-temperature medium in the first bypass branch 3 can be bypassed to the outlet of the third bypass branch 81 by controlling the opening of the third valve 81, mixed with the second mixed medium to form a third mixed medium, and further adjusted to achieve the target temperature value with the target accuracy of the medium temperature.

[0044] In addition, since the load of the first heat exchanger 1 changes according to the actual application scene, for example, the temperature demand becomes larger or smaller, a third temperature sensor or a first pressure sensor and / or a fourth temperature sensor or a second pressure sensor are arranged to monitor the change of the load of the first heat exchanger 1; the third temperature sensor or the first pressure sensor is arranged at the first inlet of the first heat exchanger 1, and the fourth temperature sensor or the second pressure sensor is arranged at the first outlet of the first heat exchanger 1; in this way, when the load changes, the temperature or pressure at the first inlet and the first outlet of the first heat exchanger 1 will change, so that by monitoring the change of the pressure or temperature at the first inlet and / or the change of the pressure or temperature at the first outlet, the target temperature value and the accuracy of the target temperature value of the system can be updated in real time, so as to update the heat exchange amount of each heat exchanger at the same time, so that the medium temperature of the whole temperature regulation system matches the actual use.

[0045] The first heat exchanger 1 has high precision requirements for the temperature of the medium when dissipating heat to the equipment with high-precision heat dissipation requirements. The medium is cooled by the equipment through the first heat exchanger 1. The medium temperature at the first outlet of the first heat exchanger 1 is high, and the medium needs to flow through the second heat exchanger 2 for cooling. At the same time, a circulating pump should be provided in the circulating loop to provide power for the flow of the medium in the circulating loop. The pressure sensor, the flow sensor 32 and the temperature sensor and other components can be provided in the circulating loop to monitor the pressure, flow and temperature information in the circulating loop.

[0046] In some embodiments, the first bypass branch 3 is provided with a first flow sensor 32, and the controller is connected with the first flow sensor 32. Specifically, the first flow sensor 32 is used to detect the flow in the first bypass branch 3, and the controller controls the opening degree of the first primary valve 31 according to the temperature at the first outlet of the second heat exchanger 2, so as to change the flow in the first bypass branch 3. The first flow sensor 32 can feed back the flow data in the first bypass branch 3 to the controller.

[0047] In some embodiments, the first mixer 5 is further included, the outlet of the first bypass branch 3 and the first outlet of the second heat exchanger 2 are connected with the inlet of the first mixer 5, and the outlet of the first mixer 5 is connected with the outlet of the second bypass branch 4. Through the setting of the first mixer 5, the temperature uniform mixing is accelerated, and the efficiency and precision of the overall energy-saving cooling system are improved.

[0048] In some embodiments, the second mixer 8 is further included, the outlet of the third bypass branch 81 and the outlet of the second bypass branch 4 are connected with the inlet of the second mixer 8, or the outlet of the first mixer 5 and the outlet of the third bypass branch 81 are connected with the inlet of the second mixer 8, and the outlet of the second mixer 8 is connected with the first inlet of the first heat exchanger 1. Through the setting of the second mixer 8, the temperature uniform mixing is accelerated, and the efficiency and precision of the overall energy-saving cooling system are improved.

[0049] Specifically, the first mixer 5 and the second mixer 8 can both be mixers, or mixed pipelines, and components or structures capable of mixing media with different temperatures can be used. The mixer is provided with at least one partition component, and the partition component has a gap with the inner wall of the mixer. That is, the partition component is in a semi-closed state. By setting the partition component, the flow in the mixer is guided, and the flow path in the mixer is prolonged, so that the mixing is more uniform. The partition component is specifically a partition plate, which is low in cost and convenient to process.

[0050] In some embodiments, a thermal buffer 7 is further included, which is connected between the first inlet of the first heat exchanger 1 and the outlet of the second mixer 8. Specifically, by arranging the thermal buffer 7, the stability of the temperature is adjusted, so that after the high-precision fine adjustment of the temperature is realized through the first bypass branch 3, the second bypass branch 4 and the third bypass branch 81, the temperature is further stabilized, and the medium with stable temperature is provided to the first inlet of the first heat exchanger 1, thereby realizing accurate control.

[0051] In some embodiments, a circulating pump 9 and a pressure sensor are further included, which are both arranged in the circulating loop. That is, the circulating pump 9 is arranged in the circulating loop to provide power for the flow of the medium in the circulating loop; the pressure sensor, the flow sensor 32 and the temperature sensor and the like can also be arranged in the circulating loop to monitor the pressure, flow and temperature and the like in the circulating loop.

[0052] In some embodiments, the first outlet of the second heat exchanger 2 is provided with a first temperature sensor 21, and the outlet of the first mixer 5 is provided with a second temperature sensor 22, and the first temperature sensor 21 and the second temperature sensor 22 are both connected with the controller. Specifically, the controller is used to control the first valve 31 according to the temperature of the first temperature sensor 21, and is also used to control the second valve 41 according to the temperature of the second temperature sensor 22.

[0053] In some embodiments, a third heat exchanger 6 is further included; the medium at the outlet of the first bypass branch 3 can be mixed with the medium at the first outlet of the second heat exchanger 2 to become first mixed medium, the first inlet of the third heat exchanger 6 can be provided for the first mixed medium to flow in, and the first outlet of the third heat exchanger 6 is connected with the outlet of the second bypass branch 4. Through the above arrangement, by introducing the third heat exchanger 6, when the temperature of the first mixed medium is higher than the target temperature value, the medium at the first outlet of the second heat exchanger 2 can be introduced through the second bypass branch 4 to realize cooling, or the external medium can be introduced through the third heat exchanger 6 to realize cooling, or both cooling methods are used at the same time; in this way, the precision, efficiency and stability of the temperature adjustment of the medium can be further improved.

[0054] In some embodiments, the second heat exchanger 2 includes a first cooling pipeline, and the third heat exchanger 6 includes a second cooling pipeline, the inlet of the second cooling pipeline is connected with the inlet of the first cooling pipeline, and the outlet of the second cooling pipeline is connected with the outlet of the first cooling pipeline, that is, the third heat exchanger 6 and the second heat exchanger 2 select the same cooling pipeline to reduce the layout cost of the equipment, of course, the third heat exchanger 6 can also adopt a separate cooling pipeline.

[0055] In some embodiments, the second cooling pipeline is provided with a fourth valve 61, and the controller is further configured to control the fourth valve 61 according to the temperature of the second temperature sensor 22, that is, when the second temperature sensor 22 detects that the temperature of the medium in the first mixer 5 is lower than the target temperature value, the temperature can be lowered by opening the second valve 41, or the temperature can be lowered by opening the fourth valve 61, or the second valve 41 and the fourth valve 61 can be opened at the same time, and the temperature of the medium entering the first heat exchanger 1 can be adjusted by adjusting the flow of the second valve 41 and the fourth valve 61.

[0056] Of course, in order to save the installation cost of the third heat exchanger 6, a heat exchange branch can also be arranged directly on the outlet pipeline of the first mixer 5, the heat exchange branch is provided with a heat exchange part, the heat exchange part is close to the outlet pipeline of the first mixer 5 to exchange heat with the outlet pipeline of the first mixer 5, the inlet of the heat exchange branch is connected with the inlet of the second cooling circuit, the outlet of the heat exchange branch is connected with the outlet of the second cooling circuit, and the heat exchange branch is provided with a fourth valve 61; the controller is further configured to control the fourth valve 61 according to the outlet temperature of the first mixer 5; the above scheme can replace the installation of the third heat exchanger 6, and the structure and position of the outlet pipeline of the first mixer 5 do not need to be changed. Further, the heat exchange part is a spiral pipe-shaped heat exchange part to improve the heat exchange efficiency.

[0057] In some embodiments, in order to facilitate the control of the controller on the first valve 31, the second valve 41, the fourth valve 61 and / or the third valve 82, the first valve 31, the second valve 41, the fourth valve 61 and / or the third valve 82 are regulating valves, of course, under the premise of not considering the control accuracy, the first valve 31, the second valve 41, the fourth valve 61 and / or the third valve 82 can also be stop valves, which are lower in cost.

[0058] In addition to the above temperature-adjusting refrigeration system, the present application also provides an air conditioner comprising the above temperature-adjusting refrigeration system, and other parts of the air conditioner refer to the prior art, which will not be described herein.

[0059] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0060] The temperature-adjusting refrigeration system provided by the present application is described in detail above. The principle and implementation manner of the present application are described by applying specific examples in the present application. The above description of the embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that, for ordinary skilled in the art, without departing from the principle of the present application, some improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A temperature regulating system comprising a circulation loop and a first heat exchanger (1) and a second heat exchanger (2) connected in the circulation loop, characterized in that, Also comprising: a first bypass branch (3), an inlet of the first bypass branch (3) being connected with a first inlet of the second heat exchanger (2), an outlet of the first bypass branch (3) being connected with a first outlet of the second heat exchanger (2), to mix to form a first mixed medium; a second bypass branch (4), an inlet of the second bypass branch (4) being connected with the first outlet of the second heat exchanger (2), an outlet of the second bypass branch (4) being connected with a first inlet of the first heat exchanger (1), a medium in the second bypass branch (4) mixing with the first mixed medium to form a second mixed medium; a third bypass branch (81), an inlet of the third bypass branch (81) being communicated with the first bypass branch (3), an outlet of the third bypass branch (81) being connected with the outlet of the second bypass branch (4), a medium in the third bypass branch (81) mixing with the second mixed medium to form a third mixed medium, the third mixed medium flowing into the first heat exchanger (1); the second heat exchanger (2), the inlet of the second bypass branch (4), the outlet of the first bypass branch (3), the outlet of the second bypass branch (4), and the outlet of the third bypass branch (81) are sequentially arranged in order; a first valve (31) is arranged in the first bypass branch (3), a second valve (41) is arranged in the second bypass branch (4), and a third valve (82) is arranged in the third bypass branch (81); the first valve (31), the second valve (41), and the third valve (82) are respectively arranged as flow regulating valves with adjustable opening degrees.

2. The tempering system of claim 1, wherein, A first temperature sensor (21) is arranged between the first outlet of the second heat exchanger (2) and the inlet of the second bypass branch (4), and a second temperature sensor (22) is arranged between the outlet of the first bypass branch (3) and the outlet of the second bypass branch (4).

3. The tempering system of claim 2, wherein, The accuracy of the first temperature sensor (21) is ±0.3 degrees or less, the accuracy of the second temperature sensor (2) is ±0.1 degrees or less, and the accuracy of the first valve (31), the second valve (41), and the third valve (82) is 1% or less.

4. The tempering system of claim 1, wherein, A third temperature sensor or a first pressure sensor for monitoring changes in the load of the first heat exchanger (1) and / or a fourth temperature sensor or a second pressure sensor are further included; the third temperature sensor or the first pressure sensor is arranged at the first inlet of the first heat exchanger (1), and the fourth temperature sensor or the second pressure sensor is arranged at the first outlet of the first heat exchanger (1).

5. The tempering system of claim 1, wherein, The temperature regulating system further comprises a first mixer (5) and a second mixer (8), the outlet of the first bypass branch (3) and the first outlet of the second heat exchanger (2) are connected to the inlet of the first mixer (5), the outlet of the first mixer (5) is connected to the outlet of the second bypass branch (4); the outlet of the third bypass branch (81) and the outlet of the second bypass branch (4) are connected to the inlet of the second mixer (8), the outlet of the second mixer (8) is connected to the first inlet of the first heat exchanger (1).

6. The tempering system of claim 5, wherein, The temperature regulating system further comprises a heat buffer (7), which is connected between the first inlet of the first heat exchanger (1) and the outlet of the second mixer (8).

7. The tempering system according to any one of claims 1 to 6, characterized in that The temperature regulating system further comprises a third heat exchanger (6); the outlet medium of the first bypass branch (3) can be mixed with the first outlet medium of the second heat exchanger (2) to become a first mixed medium, the first inlet of the third heat exchanger (6) can be used for the first mixed medium to flow in, and the first outlet of the third heat exchanger (6) is connected to the outlet of the second bypass branch (4).

8. The tempering system of claim 7, wherein, The second heat exchanger (2) comprises a first cooling pipeline, and the third heat exchanger (6) comprises a second cooling pipeline, the inlet of the second cooling pipeline is connected to the inlet of the first cooling pipeline, and the outlet of the second cooling pipeline is connected to the outlet of the first cooling pipeline.

9. The tempering system of claim 8, wherein, The second cooling pipeline is provided with a fourth valve (61).

10. An air conditioner comprising a temperature adjustment system, characterized by comprising: The temperature regulating system is the temperature regulating system according to any one of claims 1 to 9.

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