Hydraulic control module and heat recovery water system

Abstract

The invention provides a hydraulic control module and a heat recovery water system. The hydraulic control module includes: a housing; the flow path comprises a heat supply pipeline section associated with the heat dissipation source and a plurality of heat return pipeline sections associated with the heat absorption sources; the heat recovery flow path is arranged in the shell, the heat supply pipeline section forms at least one pair of heat supply pipeline connectors on the shell, and the multiple heat return pipeline sections respectively form multiple pairs of heat return pipeline connectors on the shell; and the flow path is controlled to conduct the heat supply pipeline section and the one or more heat return pipeline sections. On one hand, the heat dissipation source is cooled; and on the other hand, heat carried in the water system can be distributed to the heat absorption side according to needs, part or all of heat needed by normal work is provided for the water system, the part of heat is recycled, the overall energy utilization rate of the system is increased, and higher economic cost benefits are brought.

Description

This application is a divisional application of the Chinese Patent Application No. 201710191123.1, with the title of "Hydraulic Control Module and Heat Recovery Water System", filed on March 28, 2017. TECHNICAL FIELD

[0001] The present application relates to the field of refrigeration, and more particularly, to a hydraulic control module and heat recovery water system of a refrigeration device. BACKGROUND

[0002] A conventional refrigeration system usually absorbs heat at the evaporator side and releases heat at the condenser side. The released heat is usually taken away by cooling water or air and then released to the outside environment. This results in the unnecessary loss of a part of the heat that can be utilized. In particular, for a large commercial refrigeration system, the heat released at the condenser side due to condensation is extremely large. Therefore, if this part of heat can be recovered and used to assist heating, provide domestic water, etc., the energy utilization efficiency of the entire system is greatly increased, and the cost economy is improved. At present, some heat recovery schemes have been proposed in the field of refrigeration. For example, a heat recovery branch provided with a heat recovery heat exchanger is added, and switching between the heat recovery heat exchanger and the condenser is performed according to actual application requirements, so as to achieve the effect of on-demand heat recovery. However, for a large commercial refrigeration system, when designing a heat recovery scheme, many factors such as layout space and system pipeline design also need to be considered. Therefore, how to reasonably use space and energy to construct a heat recovery system of a large unit has become a technical problem to be solved. SUMMARY

[0003] The present application aims to provide a heat recovery hydraulic control module with high integration.

[0004] Another object of the present application is to provide a heat recovery water system with multiple heat recovery schemes.

[0005] To achieve the object of the present application, according to one aspect of the present application, a heat recovery hydraulic control module is provided, comprising: a housing; and a heat recovery flow path comprising a heat supply pipeline section associated with a heat dissipation source, and a plurality of heat recovery pipeline sections associated with a plurality of heat absorption sources; the heat recovery flow path is arranged in the housing, and the heat supply pipeline section forms at least one pair of heat supply pipeline interfaces on the housing, and the plurality of heat recovery pipeline sections respectively form a plurality of pairs of heat recovery pipeline interfaces on the housing; wherein the heat recovery flow path is controlled to connect the heat supply pipeline section and one or more heat recovery pipeline sections.

[0006] To achieve another object of the present application, according to another aspect of the present application, there is further provided a heat recovery water system, comprising: a heat source for providing heat to be recovered; a plurality of heat sinks for absorbing heat to be recovered; and a heat recovery flow path comprising a heat supply pipe section associated with the heat source, and a plurality of heat recovery pipe sections associated with the plurality of heat sinks; wherein the heat recovery flow path is controllable to conduct the heat supply pipe section with one or more of the heat recovery pipe sections. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 is a flow path schematic of a heat recovery water system and a heat exchange system associated therewith according to the present application. DETAILED DESCRIPTION

[0008] Reference is made to Figure 1 which shows one embodiment of a flow path of a heat recovery water system and a heat exchange system associated therewith. In this embodiment, the heat recovery water system 100 comprises a heat source for providing heat to be recovered, a plurality of heat sinks for absorbing heat to be recovered, and a heat recovery flow path 130 for providing heat exchange between the heat source and the heat sinks. Specifically, the heat source in this embodiment comprises a condenser side of a commercial refrigeration system such as a display cabinet 110 or a cold storage, and the heat recovery flow path 130 is associated with the one or more heat sources through a heat supply pipe section 131 thereof. The heat sinks in this embodiment comprise heat sink sides of a domestic water circuit 121, a cooling tower circuit 122, and a chiller water circuit 123, and the heat recovery flow path 130 is associated with the domestic water circuit 121 through a heat recovery pipe section 132a thereof, with the cooling tower circuit 122 through a heat recovery pipe section 132b thereof, and with the chiller water circuit 123 through a heat recovery pipe section 132c thereof. The heat recovery flow path 130 is controllable to conduct the heat supply pipe section 131 with one or more of the heat recovery pipe sections 132a, 132b, 132c, so that the heat to be released from the heat source can be partially or wholly absorbed by the one or more heat sinks. On one hand, the water system providing heat to the display cabinet system is cooled, so that the corresponding display cabinet system can keep normal operation. On the other hand, the water carrying heat in the water system can be distributed to the heat sink sides of the domestic water circuit 121, the cooling tower circuit 122, and the chiller water circuit 123 as required, to provide part or all of the heat required for normal operation thereof, so that the part of heat is recovered, improving the overall energy utilization of the system, and bringing higher economic cost benefits.

[0009] Further, to improve the integration of the heat recovery water system and to improve the arrangement simplicity, embodiments of a heat recovery hydraulic control module are also conceived. The heat recovery hydraulic control module 200 comprises a housing 210. The heat supply pipe section 131 and the heat recovery pipe sections 132a, 132b, 132c of the heat recovery flow path 130 described above can be arranged partially or entirely within the housing 210. The heat supply pipe section 131 forms at least one pair of heat supply pipe interfaces 220 on the housing 210, and the heat recovery pipe sections form multiple pairs of heat recovery pipe interfaces 230a, 230b, 230c on the housing 210, respectively. Optionally, a heat supply pipe water pump 170 for providing power can also be arranged on the heat supply pipe section 131. Under the above arrangement, the heat absorption source and the heat dissipation source can be quickly connected and disconnected as needed, greatly improving the convenience and applicability of the system.

[0010] It should be understood that the domestic water circuit 121, the cooling tower circuit 122, and the chiller unit circuit 123 in the embodiments are only partial examples of the heat absorption source. In fact, various heat exchange systems that need to absorb heat during operation can be associated with the heat recovery water system mentioned in the embodiments.

[0011] On this basis, to further improve the utilization efficiency of heat, the heat absorption source and its arrangement can be further subdivided and optimized according to the temperature requirements of the heat-carrying medium for the heat absorption source. For example, in an embodiment, the heat absorption source includes a first type of heat absorption source and a second type of heat absorption source, where the first type of heat absorption source has a higher temperature requirement than the second type of heat absorption source, that is, the first type of heat absorption source can exchange heat with a medium having a higher temperature and can better obtain heat from a medium having a higher temperature. Based on this classification, it can be known that, on the one hand, in a series connection mode, arranging the heat recovery pipe section associated with the first type of heat absorption source upstream of the heat recovery pipe section associated with the second type of heat absorption source can better recover heat. On the other hand, in a parallel connection mode, connecting multiple heat recovery pipe sections associated with the first type of heat absorption source in parallel to the heat supply pipe section in sequence, while connecting multiple heat recovery pipe sections associated with the second type of heat absorption source in parallel to the heat supply pipe section in sequence, can also better recover heat.

[0012] Returning to Figure 1 the embodiment shown, where the first type of heat absorption source includes the domestic water circuit 121, and the second type of heat absorption source includes the cooling tower circuit 122 and the chiller unit circuit 123. In the heat recovery flow path 130, the cooling tower circuit 122 and the chiller unit circuit 123, which belong to the second type of heat absorption source, are kept in parallel relationship and connected to the flow path upstream of the domestic water circuit 121. Further optimization of heat recovery is achieved.

[0013] Further, the domestic water circuit 121 comprises a water source heat pump and a water tank; the hot water in the heat recovery pipe section is lifted by the water source heat pump, so that the water stored in the water tank becomes high-temperature domestic water. The cooling tower circuit 122 is a closed cooling tower, and the working water in the heat recovery pipe section directly enters the cooling tower for heat exchange. In addition, the chilled water unit circuit 123 comprises a water-cooled chilled water unit, a water source heat pump or an open cooling tower; the circulating water in the chilled water unit circuit 123 exchanges heat with the working water in the heat recovery pipe section through the plate heat exchanger 160, and the circulating water absorbs heat and then enters the chilled water unit circuit 123 to work.

[0014] In this embodiment, in order to realize the independent control of the on-off of each heat recovery pipe section, the setting of the valve is essential. The following will provide several optimized valve setting modes. For example, an electric three-way valve 150 is arranged at the parallel intersection point of the cooling tower circuit 122 and the chilled water unit circuit 123, so as to adjust the flow ratio of the two or selectively turn on one of the two.

[0015] In this embodiment, in order to realize the suction of the hot water in the heat supply pipe section 131 into each heat recovery pipe section 132a, 132b, 132c, the setting of the driving device is essential. For example, a domestic water pump 140 can be arranged in the heat recovery pipe section 132a, which constitutes a secondary pump system with the heat supply pipe water pump in the heat supply pipe section 131; there is a common pipe section for coupling between the two, and the domestic water pump 140 is used to suck the hot water in the heat supply pipe section 131 into each heat recovery pipe section 132a. It should be understood that similar arrangements can also be used for other heat recovery pipe sections.

[0016] The working process of the heat recovery water system will be described below in combination with the foregoing embodiment.

[0017] In the low-temperature showcase operating state, the heat-absorbed refrigerant flows to the condenser side for heat dissipation; under the drive of the pump 170, the working medium water in the heat recovery flow path 130 exchanges heat with the refrigerant in the condenser side of the low-temperature showcase system to obtain heat therefrom. The working medium water carrying the heat flows into the heat supply pipeline section 131. Subsequently, it can be determined where to send the working medium water carrying the heat according to whether the domestic water circuit 121, the cooling tower circuit 122 and the water chiller circuit 123 are connected to the corresponding heat recovery pipeline sections 132a, 132b and 132c. When the domestic water circuit 121 is connected, the domestic water pump 140 on the circuit can be started; under the drive thereof, the hot water in the heat supply pipeline section 131 is guided into the heat recovery pipeline section 132a and exchanges heat in the water source heat pump in the domestic water circuit 121, so that the high-temperature domestic water stored in the water tank is obtained. Thereafter, when the electric three-way valve 150 is switched to the heat recovery pipeline section 132b, the working medium water after the first heat exchange enters the cooling tower circuit 122, and the working medium water in the heat recovery pipeline section 132b directly exchanges heat therein. Alternatively, when the electric three-way valve 150 is switched to the heat recovery pipeline section 132c, the working medium water after the first heat exchange enters the plate heat exchanger 160, and the circulating water applied in the water chiller circuit 123 also enters the plate heat exchanger 160 and exchanges heat with the working medium water in the heat recovery pipeline section, and the circulating water after absorbing heat in the plate heat exchanger 160 enters the water chiller circuit 123 to work. Specifically, when the water chiller in the water chiller circuit 123 is in the heating mode, the heat can be directly applied to assist the heating of the water chiller; when the water chiller in the water chiller circuit 123 is in the cooling mode or is not working, the heat can be directly released to the environment through the open cooling tower in the water chiller circuit 123, so that the heat recovery or release is completed through the foregoing process. The working medium water after releasing the heat flows back to the condenser side of the low-temperature showcase system through the heat supply pipeline section 131 to start a new working cycle.

[0018] The above examples mainly illustrate the heat recovery hydraulic control module and the heat recovery water system of the present application. Although only some embodiments of the present application are described, those skilled in the art should understand that the present application can be implemented in many other forms without departing from the spirit and scope of the present application. Therefore, the examples and embodiments shown are regarded as illustrative rather than limiting, and the present application can encompass various modifications and alternatives without departing from the spirit and scope of the present application as defined in the appended claims.

Claims

1. A heat recovery water system, comprising: a heat rejection source for providing heat to be recovered; a plurality of heat absorption sources for absorbing heat to be recovered; and a heat recovery flow path comprising a heat supply pipe section associated with the heat rejection source, and a plurality of heat recovery pipe sections associated with the plurality of heat absorption sources; wherein the heat recovery flow path is controlled to conduct the heat supply pipe section with one or more of the heat recovery pipe sections; the heat absorption sources comprise first type heat absorption sources and second type heat absorption sources, wherein the first type heat absorption sources have higher temperature requirements than the second type heat absorption sources, and the heat rejection source comprises a condenser heat rejection water circuit of a water-cooled compression condensing unit, characterized in that the heat recovery water system further comprises a hydraulic control module, wherein the hydraulic control module comprises a housing, and wherein the heat recovery flow path is arranged in the housing, the heat supply pipe section forms at least a pair of heat supply pipe interfaces on the housing, and the plurality of heat recovery pipe sections respectively form heat recovery pipe interfaces on the housing. the plurality of heat recovery pipe sections are connected to the heat supply pipe section in series one after another; wherein the heat recovery pipe sections associated with the first type heat absorption sources are located upstream, and the heat recovery pipe sections associated with the second type heat absorption sources are located downstream.

2. The heat recovery water system of claim 1, wherein, a second water pump is arranged on the heat recovery pipe section associated with the first type heat absorption sources, the second water pump is used to suck water in the heat supply pipe section into the heat recovery pipe section associated with the first type heat absorption sources.

3. The heat recovery water system of claim 2, wherein, the plurality of heat recovery pipe sections associated with the first type heat absorption sources are connected to the heat supply pipe section in parallel; and / or the plurality of heat recovery pipe sections associated with the second type heat absorption sources are connected to the heat supply pipe section in parallel.

4. The heat recovery water system of claim 2 or 3, wherein, a multi-way valve is arranged at the intersection of the plurality of heat recovery pipe sections connected in parallel, the multi-way valve is used to adjust the flow ratio of each of the heat recovery pipe sections, and / or to switch the on-off of each of the heat recovery pipe sections.

5. The heat recovery water system of claim 4, wherein, the first type heat absorption sources comprise a domestic water circuit; and / or the second type heat absorption sources comprise a cooling tower circuit and / or a water chiller circuit.

6. The heat recovery water system according to any one of claims 2 to 3, wherein the cooling tower circuit is a closed cooling tower.

7. The heat recovery water system of claim 6, wherein, the water chiller circuit comprises a water-cooled water chiller, and a water source or an open cooling tower.

8. The heat recovery water system of claim 6, wherein, a first water pump for providing power is arranged on the heat supply pipe section.

9. The heat recovery water system according to any one of claims 1 to 3, characterized by, ​

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