Combined heating, ventilation and air conditioning system
By combining chillers, energy towers, and air source heat pumps in a combined heating, ventilation, and air conditioning system, the high cost and environmental pollution caused by medium icing in existing technologies are solved, achieving efficient heating and low-cost operation in low-temperature environments.
Patent Information
- Application Number
- CN202423292729.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing HVAC systems use antifreeze to prevent the medium from freezing when the ambient temperature is below 0°C, which increases operating costs and causes environmental pollution.
A combined HVAC system is adopted, including a chiller, an energy tower, and an air source heat pump. The flow of the medium is controlled by valves. The combined heating method of the energy tower and the air source heat pump avoids the medium from freezing and turns on the air source heat pump for supplemental heating in low-temperature environments.
This technology enables the avoidance of medium freezing in low-temperature environments, reduces operating costs, improves the coefficient of performance (COP), and reduces environmental pollution.
Smart Images
Figure CN223636334U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of heating and air conditioning equipment, and in particular to a combined heating and air conditioning system. BACKGROUND
[0002] The heating and air conditioning system is an air conditioning system capable of simultaneously realizing room cooling and heating, which circulates in the indoor and outdoor through cold water or hot water as medium to realize the effect of indoor and outdoor temperature control. In the prior art, when the ambient temperature is below 0℃, the energy tower heat pump of the heating and air conditioning system often adopts the anti-freezing liquid mode to avoid freezing of the medium, which increases the operation cost of the energy tower heat pump and causes pollution to the environment. CONTENT OF THE INVENTION
[0003] The combined heating and air conditioning system provided by the embodiments of the present application can avoid environmental pollution and reduce operation cost.
[0004] The present application discloses a combined heating and air conditioning system, which comprises a cold water unit, an energy tower and an air source heat pump. The first interface of the cold water unit is in communication with the inlet side of a user, the second interface of the cold water unit is in communication with the outlet side of the user, the third interface of the cold water unit is in communication with the inlet of the energy tower, and the fourth interface of the cold water unit is in communication with the outlet of the air source heat pump. The third interface is in communication with the inlet side of the user, and the fourth interface is in communication with the outlet side of the user. The inlet of the energy tower is in communication with the first interface. The outlet of the energy tower is in communication with the inlet of the air source heat pump, and the outlet of the air source heat pump is in communication with the second interface. The first valve is arranged between the inlet side of the user and the first interface, and the second valve is arranged between the outlet side of the user and the second interface. The third valve is arranged between the third interface and the inlet side of the user. The fourth valve is arranged between the fourth interface and the outlet side of the user. The fifth valve is arranged between the third interface and the inlet of the energy tower. The sixth valve is arranged between the fourth interface and the outlet of the air source heat pump. The seventh valve is arranged between the inlet of the energy tower and the first interface. The eighth valve is arranged between the outlet of the air source heat pump and the second interface.
[0005] The combined heating and air conditioning system has at least the following beneficial effects:
[0006] The combined heating and air conditioning system comprises a cold water unit, an energy tower and an air source heat pump. In winter heating, if the ambient temperature is above the threshold temperature, the system normally operates without the air source heat pump for heat supplement. At this time, the system will not freeze, and if the ambient temperature is below the threshold temperature, the air source heat pump is started to supplement heat to prevent freezing. Moreover, the combined heating and air conditioning system adopts the combined heating form of the energy tower and the air source heat pump, has higher COP (coefficient of performance) and better economic efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0007] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to be limiting in
[0008] Figure 1 is a schematic diagram of a combined heating and cooling system of the present application;
[0009] The following is a description of the reference numerals used in the drawings:
[0010] 100, water chiller; 110, evaporator; 120, condenser; 130, compressor; 140, throttling valve;
[0011] 200, energy tower;
[0012] 300, air source heat pump;
[0013] 400, user;
[0014] 500, first pump;
[0015] 600, second pump. DETAILED DESCRIPTION
[0016] The features and exemplary embodiments of the various aspects of the present application will be described in detail below with reference to the drawings. The following detailed description is merely intended to teach a person skilled in the art further details about the application. Only the exemplary embodiments are described below, and those skilled in the art will understand that the application can be practiced with the except of these specific details. The following description with reference to the drawings is better understood when read in connection with the drawings.
[0017] It should be noted that the relationship terms, such as first and second, and the like, are used herein only to distinguish one from another entity or operation, and do not necessarily require or imply these entities or operations to be in any such actual relationship or order. Moreover, the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, such that processes, methods, articles, or apparatuses that comprise a list of elements do not include only those elements recited, but can also include other elements not expressly listed or inherent to such processes, methods, articles, or apparatuses. Without further limitation, an element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.
[0018] As Figure 1As shown, the embodiment discloses a combined heating, ventilation and air conditioning system, which comprises a water chiller 100, an energy tower 200 and an air source heat pump 300, and specifically as follows:
[0019] The water chiller 100 has four external interfaces, which are a first interface A, a second interface B, a third interface C and a fourth interface D. The first interface A of the water chiller 100 is in communication with an inlet side E of a user 400, and the second interface B is in communication with an outlet side F of the user 400. The third interface C of the water chiller 100 is in communication with an inlet G of the energy tower 200, and the fourth interface D of the water chiller 100 is in communication with an outlet J of the air source heat pump 300.
[0020] In the embodiment, the third interface C is also in communication with the inlet side E of the user 400, and the fourth interface D is also in communication with the outlet side F of the user 400. It should be noted that the communication described in the embodiment refers to indirect or direct communication, which can be through a pipeline or other structures.
[0021] In some preferred embodiments, the water chiller 100 comprises an evaporator 110, a condenser 120, a compressor 130 and a throttling valve 140. An internal interface A1 (reference numeral A1) of the evaporator 110 is in communication with one interface of the compressor 130, and another interface of the compressor 130 is in communication with an internal interface C1 (reference numeral C1) of the condenser 120. An internal interface B1 (reference numeral B1) of the evaporator 110 is in communication with one interface of the throttling valve 140, and another interface of the throttling valve 140 is in communication with an internal interface D1 (reference numeral D1) of the condenser 120. The evaporator 110 is respectively provided with the first interface A and the second interface B, and the condenser 120 is respectively provided with the third interface C and the fourth interface D.
[0022] The inlet G of the energy tower 200 is also in communication with the first interface A, the outlet H of the energy tower 200 is in communication with an inlet I of the air source heat pump 300, and the outlet J of the air source heat pump 300 is in communication with the second interface B.
[0023] In the embodiment, a plurality of valves are respectively arranged at various positions of the system, for controlling the communication and disconnection between various components or interfaces of the heating, ventilation and air conditioning system. The plurality of valves can adopt existing valve structures such as mechanical valves or electrically controlled valves.
[0024] In this embodiment, the first valve S1 is arranged between the inlet side E of the user 400 and the first interface A, and the second valve S2 is arranged between the outlet side F of the user 400 and the second interface B; the third valve S3 is arranged between the third interface C and the inlet side E of the user 400; the fourth valve S4 is arranged between the fourth interface D and the outlet side F of the user 400; the fifth valve S5 is arranged between the third interface C and the inlet G of the energy tower 200; the sixth valve S6 is arranged between the fourth interface D and the outlet J of the air source heat pump 300; the seventh valve S7 is arranged between the inlet G of the energy tower 200 and the first interface A; and the eighth valve S8 is arranged between the outlet J of the air source heat pump 300 and the second interface B.
[0025] Specifically, the first valve S1 is used to control the communication between the first interface A and the inlet side E of the user 400, the second valve S2 is used to control the communication between the outlet side F of the user 400 and the second interface B, the third valve S3 is used to control the communication between the third interface C and the inlet side E of the user 400, the fourth valve S4 is used to control the communication between the outlet side F of the user 400 and the fourth interface D, the fifth valve S5 is used to control the communication between the third interface C and the inlet G of the energy tower 200, the sixth valve S6 is used to control the communication between the outlet J of the air source heat pump 300 and the fourth interface D, the seventh valve S7 is used to control the communication between the first interface A and the inlet G of the energy tower 200, and the eighth valve S8 is used to control the communication between the outlet J of the air source heat pump 300 and the second interface B.
[0026] In some preferred embodiments, the combined heating, ventilation and air conditioning system further comprises a first pump 500 and a second pump 600, and the specific structure of the first pump 500 and the second pump 600 can refer to the prior art. In this embodiment, the first pump 500 and the second pump 600 drive the circulation of the medium in the system.
[0027] The communication relationship of the first pump 500 is as follows: the first pump 500 has two communication ports, which are a first communication port and a second communication port; the first communication port of the first pump 500 is in communication with the outlet side F of the user 400; the second communication port of the first pump 500 is in communication with the second interface B through the second valve S2, that is, the second valve S2 is arranged between the second communication port of the first pump 500 and the second interface B; and the second communication port of the first pump 500 is also in communication with the fourth interface D through the fourth valve S4, that is, the fourth valve S4 is arranged between the second communication port of the first pump 500 and the fourth interface D.
[0028] The communication relationship of the second pump 600 is as follows: the second pump 600 also has two communication ports, which are a first communication port and a second communication port, the first communication port of the second pump 600 is in communication with the outlet J of the air source heat pump 300, and the second communication port of the second pump 600 is in communication with the fourth interface D through the sixth valve S6, that is, the sixth valve S6 is arranged between the second communication port of the second pump 600 and the fourth interface D, and the second communication port of the second pump 600 is also in communication with the second interface B through the eighth valve S8, that is, the eighth valve S8 is arranged between the second communication port of the second pump 600 and the second interface B.
[0029] The working principle of the combined heating and air conditioning system of the embodiment is as follows:
[0030] In summer operation: the first valve S1, the second valve S2, the fifth valve S5 and the sixth valve S6 are all in a closed state, and the third valve S3, the fourth valve S4, the seventh valve S7 and the eighth valve S8 are all in an open state, at this time, the chilled water provides cold energy for the user 400 through the first valve S1, and then returns to the second interface B of the evaporator 110 to complete a cycle; the cooling water flows out from the third interface C of the condenser 120, passes through the fifth valve S5, and then flows through the energy tower 200 and the air source heat pump 300 in turn to release heat, and then flows back to the fourth interface D of the condenser 120 through the sixth valve S6 to complete a cycle.
[0031] In winter operation: the third valve S3, the fourth valve S4, the seventh valve S7 and the eighth valve S8 are all in a closed state, and the first valve S1, the second valve S2, the fifth valve S5 and the sixth valve S6 are all in an open state, at this time, the hot water flows out from the third interface C of the condenser 120, and then provides heating for the user 400 through the third valve S3, and then flows back to the fourth interface D of the condenser 120 through the fourth valve S4 to complete a cycle; the cold water flows out from the first interface A of the evaporator 110, passes through the seventh valve S7, flows through the energy tower 200 to be heated, and if the ambient temperature is lower than the threshold temperature (for example, lower than 3 degrees Celsius), the air source heat pump 300 needs to be additionally started to heat, and the heated medium then flows back to the second interface B of the evaporator 110 through the eighth valve S8 to complete a cycle.
[0032] Compared with other systems, the combined heating and air conditioning system of the embodiment replaces the boiler with the air source heat pump 300, does not need to use natural gas, only needs to use electricity, can be switched at any time during refrigeration and heating, and has better economic benefits.
[0033] The above merely describes a specific implementation of the present application. Those skilled in the art can clearly understand the specific working processes of the system, modules and units described above for the convenience and brevity of description, and can refer to the corresponding processes in the foregoing method embodiments, which will not be described herein again. It should be understood that the protection scope of the present application is not limited to this, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application.
Claims
1. A combined heating, ventilation, and air conditioning system, characterized by, The system comprises a chiller (100), an energy tower (200) and an air source heat pump (300); The first interface (A) of the chiller is communicated with the inlet side (E) of the user (400), the second interface (B) of the chiller is communicated with the outlet side (F) of the user, the third interface (C) of the chiller is communicated with the inlet (G) of the energy tower, and the fourth interface (D) of the chiller is communicated with the outlet (J) of the air source heat pump; The third interface (C) is communicated with the inlet side (E) of the user, and the fourth interface (D) is communicated with the outlet side (F) of the user. The inlet (G) of the energy tower is communicated with the first interface (A), the outlet (H) of the energy tower is communicated with the inlet (I) of the air source heat pump, and the outlet (J) of the air source heat pump is communicated with the second interface (B). The first valve (S1) is arranged between the first interface (A) and the inlet side (E) of the user, the second valve (S2) is arranged between the second interface (B) and the outlet side (F) of the user, the third valve (S3) is arranged between the third interface (C) and the inlet side (E) of the user, the fourth valve (S4) is arranged between the fourth interface (D) and the outlet side (F) of the user, the fifth valve (S5) is arranged between the third interface (C) and the inlet (G) of the energy tower, the sixth valve (S6) is arranged between the fourth interface (D) and the outlet (J) of the air source heat pump, the seventh valve (S7) is arranged between the inlet (G) of the energy tower and the first interface (A), and the eighth valve (S8) is arranged between the outlet (J) of the air source heat pump and the second interface (B).
2. The combined heating, ventilation, and air conditioning system of claim 1, wherein, The chiller comprises an evaporator (110), a condenser (120), a compressor (130) and a throttling valve (140), the inner interface one (A1) of the evaporator is communicated with the inner interface one (C1) of the condenser through the compressor, the inner interface two (B1) of the evaporator is communicated with the inner interface two (D1) of the condenser through the throttling valve, the first interface (A) and the second interface (B) are arranged on the evaporator, and the third interface (C) and the fourth interface (D) are arranged on the condenser.
3. The combined heating, ventilation, and air conditioning system of claim 1, wherein, The first pump (500) and the second pump (600) are further arranged, the first communication port of the first pump is communicated with the outlet side (F) of the user, the second communication port of the first pump is communicated with the second interface (B) through the second valve (S2), the second communication port of the first pump is communicated with the fourth interface (D) through the fourth valve (S4), the first communication port of the second pump is communicated with the outlet (J) of the air source heat pump, the second communication port of the second pump is communicated with the fourth interface (D) through the sixth valve (S6), and the second communication port of the second pump is communicated with the second interface (B) through the eighth valve (S8).